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YURUBE TakashiGraduate School of Medicine / Faculty of Medical SciencesAssociate Professor
Research activity information
■ Award- Apr. 2025 Osteoarthritis and Cartilage, 2024 Top Reviewers, 2024 Top Reviewers
- Jul. 2024 第57回日本整形外科学会骨軟部腫瘍学術集会, Best Presentation Award, 高齢者脊椎転移手術においてフレイルは生命予後予測因子である
- May 2023 The 49th Annual Meeting, International Society for the Study of the Lumbar Spine, ISSLS Young Investigator Travel Grant, Transient Receptor Potential Vanilloid 4 (TRPV4) activation promotes autophagy and increases extracellular matrix synthesis through AMPK pathway in rat intervertebral disc cells
- May 2023 The 49th Annual Meeting, International Society for the Study of the Lumbar Spine, ISSLS Young Investigator Travel Grant, Development of treatment for intervertebral disc degeneration by the selective interference of the mTOR signaling pathway using the CRISPR–Cas9 system
- Apr. 2023 第140回中部日本整形外科災害外科学会, 学会奨励賞, 脊椎転移手術における術後合併症発生リスクの前向き検討
- Mar. 2023 第35回日本軟骨代謝学会, 第28回学会賞, ラット椎間板恒常性維持へのオートファジーの関与：Atg5に対するRNA干渉を用いた細胞・動物実験による検討
- Oct. 2022 神戸大学医学部, 神戸大学医学部優秀学術論文賞, Involvement of autophagy in the maintenance of rat intervertebral disc homeostasis: an in-vitro and in-vivo RNA interference study of Atg5
- Dec. 2021 Journal of Orthopaedic Research, 2020 Top Reviewers, 2020 Top Reviewers
- May 2021 Osteoarthritis and Cartilage, 2020 Top Reviewers, 2020 Top Reviewers
- Apr. 2021 第136回中部日本整形外科災害外科学会, 学会奨励賞, ラット椎間板恒常性維持に対するAtg5依存性オートファジーの関与：ラット細胞・動物実験の検討
- Oct. 2020 神戸大学医学部, 神戸大学医学部優秀学術論文賞, Reduced nucleotomy-induced intervertebral disc disruption through spontaneous spheroid formation by the Low Adhesive Scaffold Collagen (LASCol)
- Sep. 2020 第49回日本脊椎脊髄病学会, 第15回Asia Traveling Fellowship
- Apr. 2020 第49回日本脊椎脊髄病学会, 日本脊椎脊髄病学会優秀論文賞, 脊椎転移に対する手術療法の効果と限界
- Nov. 2019 The 47th Annual Meeting, Cervical Spine Research Society, 3rd Place Basic Research Paper Award, Involvement of autophagy in human cervical spine degenerated and herniated discs
- Sep. 2019 第27回日本腰痛学会, 最優秀演題賞, ラット脊椎椎間板の恒常性維持におけるAtg5依存性オートファジーの関与
- Nov. 2018 第2回リハビリテーション医学会秋季学術集会, YIA優秀賞, 70歳以上の脊椎転移患者の手術成績－PS、ADL、QOLの推移から－Japan society
- May 2018 The 45th Annual Meeting, International Society for the Study of the Lumbar Spine, ISSLS Best Posters 2018, Features and problems of corrective long spinal fusion for adult spinal deformity with multiple vertebral fractures due to severe osteoporosisInternational society
- Apr. 2018 第130回中部日本整形外科災害外科学会, 学会奨励賞, 前向きコホート研究による症候性脊椎転移の発生リスクに関する検討Japan society
- Aug. 2017 第6回Japan Association of Spine Surgeons With Ambition, Best Presenter Award, 症候性脊椎転移の発生リスクに関する前向き研究Japan society
- Jan. 2017 Journal of Orthopaedic Research, JOR 2016 Top Reviewers, JOR 2016 Top Reviewers
- Mar. 2016 第45回脊椎外科を学ぶ会, 最優秀演題賞, 硬膜内髄外腫瘍に起因する水頭症により意識障害を呈した2例
- Nov. 2015 The 43rd Annual Meeting, Cervical Spine Research Society, 2nd Place Clinical Research Paper Award, Predictive risk factors of cervical spine instabilities in rheumatoid arthritis: a prospective minimum 10-year multicenter cohort study
- Oct. 2015 第49回日本本側弯症学会学術集会, 最優秀ポスター賞, 重度症候性側弯手術での椎弓根スクリュー刺入における電磁波センサー付きプローブの有効性
- Jun. 2014 The 41st Annual Meeting, International Society for the Study of the Lumbar Spine, ISSLS Best Posters 2014, Mechanobiology of complex loading in functional spinal units: flexion/extension with combined torsion
- Apr. 2013 第120回中部日本整形外科災害外科学会学術集会, 学会奨励賞, 椎間板変性では脊索由来細胞の消失を契機として細胞外基質の分解が進行する－ラット椎間板変性モデルでの検討－
- Apr. 2012 第41回日本脊椎脊髄病学会学術集会, 学会奨励賞：大正富山アワード, Progression of cervical spine instabilities in rheumatoid arthritis: a prospective cohort study of outpatients over 5 years
- Dec. 2011 The 39th Annual Meeting, Cervical Spine Research Society, 2nd Place Clinical Research Paper Award, Accelerated development of cervical spine instabilities in rheumatoid arthritis -a prospective minimum five-year follow-up study-
- AIMS: Frailty has recently been associated with postoperative complications and clinical outcomes in various fields. This study aimed to assess the relationships between frailty and surgical outcomes of palliative surgery for spinal metastases and assess the usefulness of the modified five-item frailty index (mFI-5) in this population. METHODS: We prospectively evaluated 273 patients who underwent spinal metastasis surgery from June 2015 to December 2021. The mFI-5 was used to assess frailty, with a score of 0 defined as non-frailty, 1 as pre-frailty, and 2 or more as frailty. The following variables were assessed: background characteristics, complications (Clavien-Dindo grade 2 or higher), postoperative clinical outcomes, and life expectancy. The clinical outcomes compared between the three groups were the performance status (PS), Barthel index, and EuroQoL five-dimension questionnaire (EQ-5D) at six months postoperatively. A multivariate stepwise logistic regression analysis was performed of variables with values of p < 0.1 on the univariate analysis. RESULTS: The overall complication rate was 19% (52/273). The complication rate was significantly higher in the frailty group (p = 0.005), and patients with a greater mFI-5 score tended to have a higher incidence of postoperative complications. The Kaplan-Meier curve showed that the non-frailty group had a significantly longer survival time than the pre-frailty and frailty groups (p < 0.001). Multivariate logistic regression analysis suggested that mFI-5 is not predictive of postoperative complications and improvement of the EQ-5D, while is predictive of improvement of the PS (odds ratio (OR) 4.22) and Barthel index (OR 4.49). CONCLUSION: The current study suggested that mFI-5 is not predictive of postoperative complications and improvement of the EQ-5D, while is predictive of improvement of the PS and Barthel index. Furthermore, palliative surgery for spinal metastases improved the PS, Barthel index, and EQ-5D, even in patients with frailty.Oct. 2025, Bone & joint open, 6(10) (10), 1199 - 1207, English, International magazineScientific journal
- The DNA synthesis inhibitor zoliflodacin (ZFD) is expected to be effective against strains resistant to therapeutic agents for Neisseria gonorrhoeae infection. In addition to ZFD, we investigated the susceptibility of N. gonorrhoeae strains to ceftriaxone (CTRX), ciprofloxacin (CPFX), garenoxacin (GRNX), and sitafloxacin (STFX). Minimum inhibitory concentration values for ZFD and four other drugs were determined for 147 strains of N. gonorrhoeae isolated at medical institutions in Hyogo Prefecture, Japan, from 2015 to 2022. Amino acid alterations in gyrA, gyrB, parC, and parE were examined by polymerase chain reaction and sequencing analysis. Sequence type (ST) was determined for epidemiological analysis, and N. gonorrhoeae strains were classified. The non-susceptibility rate was not observed in CTRX. The lowest non-susceptibility rate was observed in ZFD (39.5%) compared to CPFX (80.3%), GRNX (83.7%), and STFX (65.3%) (all p < 0.0001). The most common amino acid alterations in gyrA and parC had non-susceptibility rates exceeding 80% to quinolones except ZFD, suggesting that these alterations may have influenced the resistance trend. STs were different between isolates in 2015 and those in 2020 and later. ZFD showed potent antimicrobial activity against N. gonorrhoeae strains that are highly resistant to quinolones. It may become a new option in the treatment of gonococcal infections.Aug. 2025, Pathogens (Basel, Switzerland), 14(8) (8), English, International magazineScientific journal
- PURPOSE: Retro-odontoid pseudotumor (ROP) is a condition characterized by benign soft tissue proliferation at the odontoid process due to mechanical stress in the atlantoaxial joint, often represented by atlantoaxial subluxation (AAS). However, the pathogenesis of ROP remains unclear, as AAS can also occur without ROP. The purpose of this study is to clarify the pathogenesis of ROP in patients with AAS by analyzing imaging findings in patients without rheumatoid arthritis who underwent surgery for AAS and/or ROP. METHODS: A multicenter cross-sectional study was conducted. Patients without rheumatoid arthritis who underwent surgery for AAS and/or ROP at three university hospitals between 2010 and 2022 were enrolled in this study. Patients were divided into two groups: the ROP group, comprising patients with AAS and ROP, and the non-ROP group, comprising those with AAS without ROP. Patient demographics and preoperative imaging findings, including plain radiography, multidetector computed tomography, and magnetic resonance imaging, were compared between the two groups. RESULTS: The ROP group included 32 patients (age: 75.6 ± 7.7 years; 23 male and 9 female patients), while the non-ROP group comprised 18 patients (age: 70.5 ± 14.6 years; 9 male and 9 female patients). No significant differences were observed between the two groups in terms of age, sex, or history of cervical spine surgery. However, the O-C2 angle in the extension position and C2-C7 sagittal vertical axis were significantly larger in the ROP group than in the non-ROP group. Additionally, degeneration of the facet joints and intervertebral discs in the subaxial cervical spine was significantly more advanced in the ROP group than in the non-ROP group. CONCLUSION: In patients with AAS, the anterior translation of the cervical spine, as well as the progressive degeneration of the subaxial cervical facet joints and intervertebral discs, may increase mechanical stress on the atlantoaxial joint, contributing to the development of ROP.Jul. 2025, European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, English, International magazineScientific journal
- INTRODUCTION: Some cases of postoperative correction loss have been observed in the reduction of vertebral slippage using a percutaneous pedicle screw system for lumbar degenerative spondylolisthesis. We aimed to identify the risk factors for correction loss after minimally invasive transforaminal lumbar interbody fusion (MIS-TLIF) and to determine the effect of postoperative correction loss on postoperative clinical outcomes. METHODS: In this retrospective study, a total of 111 patients (mean age 69.5 years, 37 men and 74 women) who underwent single-level MIS-TLIF with slippage reduction for lumbar degenerative spondylolisthesis and were followed up for >1 year were included in the study. The correction loss group (group L) included those with a correction loss of ≥3 mm between immediately after surgery and 1 year after surgery, and the correction maintenance group (group M) included those with a correction loss <3 mm. Demographic data, preoperative and postoperative radiographic measurements, and clinical outcomes were collected, and the risk factors in group L and clinical outcomes in the two groups were analyzed statistically. RESULTS: Groups L and M comprised 19 and 92 cases, respectively. High pelvic incidence-lumbar lordosis (odds ratio [OR]: 1.16, 95% confidence interval [CI]: 1.07-1.25, p<0.001), high slip vertebra slope (OR: 1.22, 95% CI: 1.07-1.39, p<0.001), and ≥10° segmental angulation (OR: 15.00, 95% CI: 3.04-73.95, p=0.0022) were risk factors for correction loss; however, low bone density was not. The Oswestry Disability Index and Visual Analog Scale scores for low back pain, leg pain, and leg numbness were not significantly different between both groups; however, the bone union rate at 6 months postoperatively was significantly lower in group L (p=0.0020). CONCLUSIONS: Postoperative correction loss was influenced by preoperative sagittal alignment and instability rather than bone density. Patients with correction loss tend to have prolonged bone union and should be closely monitored.Jul. 2025, Spine surgery and related research, 9(4) (4), 443 - 452, English, Domestic magazineScientific journal
- PURPOSE: To identify differences in severe pain levels during prepregnancy to four months postpartum among groups along with risk factors for residual pain early in pregnancy. METHODS: We examined 298 patients who participated in the questionnaire. Pain intensity was evaluated using a numerical rating scale (NRS) monthly postpartum. Four patterns emerged: recovery group (n = 200), with NRS 0-3 at 4 months postpartum; keep-high group (n = 20), with NRS ≥ 6 every month after delivery; worse group (n = 28), where NRS increased ≥ 3 during months 1-4; and mixed group (n = 50). Age, body mass index (BMI), history of back pain, breastfeeding, feeding posture, depression, and postpartum stress factors were compared. RESULTS: Overall, 15% patients had pain with NRS ≥ 4 before pregnancy and 33% at 4 months postpartum. NRS score of the keep-high group was the highest (4.18) before pregnancy, with a distinctive pain pattern. For participants with NRS ≥ 4 before pregnancy, the odds ratio of NRS ≥ 7 in the final month was 5.56 [95% confidence interval: 2.52-12.58, p < 0.001]. All three groups compared with the recovery group demonstrated significant differences in the questionnaires for depression (p < 0.01) and postpartum stress factors (p < 0.05). The combination of lower back and back pain was an early indicator of severe postpartum pain. CONCLUSION: Higher NRS scores before pregnancy and at multiple pain sites are early indicators of severe postpartum pain. All three groups, except the recovery group, showed a tendency for depression. However, the mixed group exhibited features similar to the recovery group.Jul. 2025, European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 34(7) (7), 2555 - 2561, English, International magazineScientific journal
- Background: Postoperative wound dehiscence is a major complication following spinal metastasis surgery, particularly in patients who receive preoperative radiotherapy or molecular-targeted therapy; however, preventive strategies remain limited. Objective: In this study, we aimed to identify the risk factors for postoperative wound dehiscence and evaluate the clinical utility of a novel curved skin incision (CSI) technique, designed to avoid irradiated areas, in comparison with the conventional midline incision (MI) technique. Methods: Logistic regression analysis was conducted on 107 patients who underwent MI between 2013 and 2018. Based on the results, we developed the CSI technique. Propensity score matching was performed to compare postoperative wound dehiscence in 29 matched pairs of patients treated with either CSI or MI from 2019 to 2021. Results: Preoperative radiotherapy and molecular-targeted therapy were found to be significant risk factors for wound dehiscence. CSI, which circumvents irradiated skin, was associated with a substantially lower rate of wound dehiscence than MI. Conclusions: The CSI technique offers a simple, reproducible, and effective surgical approach to reduce postoperative wound complications in high-risk patients. Its clinical benefit, especially for those with prior radiotherapy, suggests that it may serve as a valuable addition to standard spinal metastasis surgery.Jun. 2025, Cancers, 17(12) (12), English, International magazineScientific journal
- BACKGROUND: Pediatric lumbar spondylolysis (LS) is common in junior and senior high school athletes. Lower LS (L4-L5 level) is more common in children, and upper LS (L1-L3 level) is relatively rare; therefore, the pathogenesis of upper LS remains unclear. PURPOSE: To elucidate the mechanisms of upper LS by identifying and comparing characteristics between upper and lower LS cases. STUDY DESIGN/SETTING: Retrospective cross-sectional study. PATIENT SAMPLE: This study included 842 pediatric patients aged ˂18 years diagnosed with single-level acute LS at a single outpatient clinic between 2015 and 2022. OUTCOME MEASURES: The rate of upper LS, age, sex, participation in flexibility sports, presence of spina bifida occulta (SBO), and radiological parameters including lumber lordosis, L1-L4 lordosis, L4-S1 lordosis, and sacral slope. METHODS: We retrospectively analyzed the data of all patients with acute LS diagnosed using plain radiography, multidetector computed tomography, and magnetic resonance imaging. The upper and lower LS groups were subsequently compared using univariate and multivariate analyses to investigate factors associated with upper LS. RESULTS: Of the included 842 patients, 88 (10.5%) had upper LS. Multivariate analysis showed that older age (odds ratio, 1.62; p<.001), flexibility sports participation (odds ratio, 2.50; p=.041), lower prevalence of SBO (odds ratio, 0.49; p=.011), increased L1-L4 lordosis (odds ratio, 1.16; p<.001), and decreased L4-S1 lordosis (odds ratio, 0.84; p<.001) were significantly associated with upper LS development. CONCLUSIONS: Patients with upper LS had clearly different characteristics from those with lower LS in terms of age, participation in flexibility sports, presence of SBO, and segmental lordosis of the lumbar spine. This study will help further research in elucidating the mechanisms of upper LS.Jun. 2025, The spine journal : official journal of the North American Spine Society, 25(6) (6), 1188 - 1195, English, International magazineScientific journal
- BACKGROUND: Transient receptor potential vanilloid 4 (TRPV4) has been identified as a Ca2+-permeable channel and is activated under physiological mechanical stimulation in disc nucleus pulposus (NP) cells. Meanwhile, the Ca2+-dependent AMP-activated protein kinase (AMPK)/mTOR pathway activates autophagy in notochordal cells. We hypothesized that TRPV4 is involved in the maintenance of intradiscal homeostasis via autophagy. Our objective was to elucidate the role of TRPV4 in extracellular matrix (ECM) metabolism and autophagy in the rat intervertebral disc through a loss-of-function study with the RNA interference (RNAi) technique. METHODS: In vitro study: Small interfering RNA (siRNA) was applied to knockdown TRPV4 by the reverse transfection method in rat disc NP cells. Expression of TRPV4, AMPK/mTOR pathway-related markers, and autophagy markers were measured by Western blotting (WB). Next, ECM metabolism was assessed under serum starvation and/or proinflammatory interleukin-1 beta (IL-1β) stimulation. In vivo study: TRPV4 and control siRNAs were injected into rat discs. To confirm in vivo transfection, WB for TRPV4 was conducted in rat disc NP-tissue protein extracts 2, 28, and 56 days after injection. Furthermore, 24-h temporary static compression-induced disruption of TRPV4 siRNA-injected discs was observed by radiography, histomorphology, and immunofluorescence. RESULTS: In vitro study: In disc cells, three different TRPV4 siRNAs consistently suppressed autophagy with TRPV4 protein knockdown (mean 33.2% [95% CI: -50.8, -15.5], 44.1% [-61.7, -26.4], 58.3% [-76.0, -40.7]). ECM metabolism was significantly suppressed by TRPV4 RNAi under proinflammatory IL-1β stimulation. In vivo study: The WB displayed sustained decreases in TRPV4 protein expression 2, 28, and 56 days after injection. Under the loaded condition, TRPV4 siRNA-injected discs presented radiographic height loss ([-31.7, -7.75]), histomorphological damage ([0.300, 4.70]), and immunofluorescent suppression of autophagy ([1.61, 20.5]) and ECM metabolism ([-25.2, -6.41]) compared to control siRNA-injected discs at 56 days. CONCLUSIONS: The TRPV4 could be a therapeutic target for intervertebral disc diseases via modulating autophagy.Mar. 2025, JOR spine, 8(1) (1), e70046, English, International magazineScientific journal
- STUDY DESIGN: Retrospective case-control study. OBJECTIVE: To determine risk factors for recurrence of pediatric lumbar spondylolysis at L5 after return to sport in patients who achieved bone union with conservative treatment. SUMMARY OF BACKGROUND DATA: Pediatric lumbar spondylolysis is a stress fracture commonly observed in adolescent athletes, particularly at the L5 vertebra. Because some patients experience a recurrence of spondylolysis after bone fusion with conservative treatment, identifying risk factors for recurrence may help athletes continue sports activities, maintain performance levels, and preserve mental health. METHODS: Of the 375 pediatric patients (<18 years of age) who received conservative treatment for lumbar spondylolysis at L5 between 2015 and 2021, 296 patients who achieved bone fusion and returned to their original sports activities were analyzed. Recurrence rate, sports, pathological stage of spondylolysis at initial examination, presence of spina bifida occulta (SBO), duration of conservative treatment for initial spondylolysis, and radiological parameters including lumber lordosis, L5-S1 lordosis, and sacral slope were examined. Recurrence and non-recurrence groups were compared using univariate and multivariate analyses to investigate risk factors for recurrence. A receiver operating characteristic (ROC) curve was drawn to determine cut-off values of the parameters to predict spondylolysis recurrence. RESULTS: Recurrence was observed in 52 out of 296 patients (17.6%). Multivariate logistic regression analysis revealed that a large L5-S1 lordosis was a significant independent risk factor for recurrence. ROC analysis demonstrated a cut-off value of 24.5° for L5-S1 lordosis. Age, sex, SBO, and duration of conservative treatment for initial spondylolysis were not significant predictors of recurrence. CONCLUSION: We identified large L5-S1 lordosis as an independent risk factor for recurrence of pediatric lumbar spondylolysis at L5 following conservative treatment. Intensive athletic rehabilitation to prevent recurrence and follow-up measures to monitor and detect recurrence are recommended for patients with large L5-S1 lordosis.Feb. 2025, Spine, English, International magazineScientific journal
- (一社)日本脊椎脊髄病学会, Feb. 2025, Journal of Spine Research, 16(3) (3), 102 - 102, Japanese
- The mammalian target of rapamycin (mTOR), a serine/threonine kinase, promotes cell growth and inhibits autophagy. The following two complexes contain mTOR: mTORC1 with the regulatory associated protein of mTOR (RAPTOR) and mTORC2 with the rapamycin-insensitive companion of mTOR (RICTOR). The phosphatidylinositol 3-kinase (PI3K)/Akt/mTOR signaling pathway is important in the intervertebral disk, which is the largest avascular, hypoxic, low-nutrient organ in the body. To examine gene-silencing therapeutic approaches targeting PI3K/Akt/mTOR signaling in degenerative disk cells, an in vitro comparative study was designed between small interfering RNA (siRNA)-mediated RNA interference (RNAi) and clustered regularly interspaced short palindromic repeat (CRISPR)-CRISPR-associated protein 9 (Cas9) gene editing. Surgically obtained human disk nucleus pulposus cells were transfected with a siRNA or CRISPR-Cas9 plasmid targeting mTOR, RAPTOR, or RICTOR. Both of the approaches specifically suppressed target protein expression; however, the 24-h transfection efficiency differed by 53.8-60.3% for RNAi and 88.1-89.3% for CRISPR-Cas9 (p < 0.0001). Targeting mTOR, RAPTOR, and RICTOR all induced autophagy and inhibited apoptosis, senescence, pyroptosis, and matrix catabolism, with the most prominent effects observed with RAPTOR CRISPR-Cas9. In the time-course analysis, the 168-h suppression ratio of RAPTOR protein expression was 83.2% by CRISPR-Cas9 but only 8.8% by RNAi. While RNAi facilitates transient gene knockdown, CRISPR-Cas9 provides extensive gene knockout. Our findings suggest that RAPTOR/mTORC1 is a potential therapeutic target for degenerative disk disease.Dec. 2024, Cells, 13(23) (23), English, International magazineScientific journal
- AIMS: Frailty has been gathering attention as a factor to predict surgical outcomes. However, the association of frailty with postoperative complications remains controversial in spinal metastases surgery. We therefore designed a prospective study to elucidate risk factors for postoperative complications with a focus on frailty. METHODS: We prospectively analyzed 241 patients with spinal metastasis who underwent palliative surgery from June 2015 to December 2021. Postoperative complications were assessed by the Clavien-Dindo classification; scores of ≥ Grade II were defined as complications. Data were collected regarding demographics (age, sex, BMI, and primary cancer) and preoperative clinical factors (new Katagiri score, Frankel grade, performance status, radiotherapy, chemotherapy, spinal instability neoplastic score, modified Frailty Index-11 (mFI), diabetes, and serum albumin levels). Univariate and multivariate analyses were developed to identify risk factors for postoperative complications (p < 0.05). RESULTS: Overall, 57 postoperative complications occurred in 47 of 241 (19.5%) patients. The most common complications were wound infection/dehiscence, urinary tract infection, and pneumonia. Univariate analysis identified preoperative radiotherapy (p = 0.028), mFI (p < 0.001), blood loss ≥ 500 ml (p = 0.016), and preoperative molecular targeted drugs (p = 0.030) as potential risk factors. From the receiver operating characteristic curve, the clinically optimal cut-off value of mFI was 0.27 (sensitivity, 46.8%; specificity, 79.9%). Multivariate analysis identified mFI ≥ 0.27 (odds ratio (OR) 2.94 (95% CI 1.44 to 5.98); p = 0.003) and preoperative radiotherapy (OR 2.11 (95% CI 1.00 to 4.46); p = 0.049) as significant risk factors. In particular, urinary tract infection (p = 0.012) and pneumonia (p = 0.037) were associated with mFI ≥ 0.27. Furthermore, the severity of postoperative complications was positively correlated with mFI (p < 0.001). CONCLUSION: The mFI is a useful tool to predict the incidence and the severity of postoperative complications in spinal metastases surgery.Dec. 2024, The bone & joint journal, 106-B(12) (12), 1469 - 1476, English, International magazineScientific journal
- OBJECTIVE: To identify factors associated with the absence of cervical spine instability in patients with rheumatoid arthritis (RA). METHODS: Cervical spine instability was defined as the presence of at least one of the following: atlantoaxial subluxation, vertical subluxation of the axis, or subaxial subluxation. In 2001-2002, 634 enrolled outpatients with "classical" or "definite" RA underwent a radiographic cervical spine checkup. In 2012-2013, 233 (36.8%) prospectively underwent routine clinical follow-ups with a >10-year radiographic evaluation. The prevalence and independent predictive factors for no instability were analyzed by multivariable logistic regression. Next, 85 of 292 outpatients (29.1%) without baseline cervical spine instability completed consecutive >5-year and >10-year radiographic examinations. The incidence and predictors for no new development of instability were assessed similarly. RESULTS: Among 233 patients, those without cervical spine instability decreased from 114 (48.9%) to 47 (20.2%) during >10 years. Steinbrocker peripheral joint destruction stages I-II (odds ratio [OR], 3.797; p=0.001), no corticosteroid administration (OR, 2.700; p=0.007), and no previous joint surgery (OR, 2.480; p=0.020) were predictors for no instability. Then, 33 of 85 (38.8%) consecutively followed patients without baseline cervical spine lesions did not develop instability throughout. Steinbrocker stages I-II (OR, 5.355; p=0.005) and no corticosteroid therapy (OR, 3.868; p=0.010) were predictors for no new onset of instability. C-reactive protein (CRP) level≤1.0 mg/dL was marginal in both models (n=233 [OR, 2.013; p=0.057], n=85 [OR, 2.453; p=0.075]). CONCLUSION: Steinbrocker stages I-II, no corticosteroids, no previous joint surgery, and possibly CRP ≤1.0 mg/dL are factors associated with >10-year absence of cervical spine instability in RA.Dec. 2024, Neurospine, 21(4) (4), 1230 - 1240, English, International magazineScientific journal
- We designed a prospective multicenter cohort study to clarify a long-term, > 10-year prevalence and aggravation of cervical spine instabilities in rheumatoid arthritis (RA). In 2001-2002, 634 outpatients were enrolled, and 233 (36.8%) were followed for > 10 years. Cervical spine instability was defined as atlantoaxial subluxation (AAS, > 3-mm atlantodental interval), vertical subluxation (VS, < 13-mm Ranawat value), and subaxial subluxation (SAS, ≥ 2-mm irreducible vertebral translation). The aggravation was determined as ≥ 2 mm decrease of the Ranawat value in VS, ≥ 2-mm increase of slippage in SAS, and these new developments. The prevalence of VS and SAS increased during both the initial and last > 5 years (all, p ≤ 0.049). While VS aggravation was associated with pre-existing AAS (p = 0.007) and VS (p = 0.002), SAS aggravation correlated with pre-existing VS (p = 0.002). Multivariable analysis found hand mutilating changes (odds ratio [OR] = 4.048, p = 0.008), RA duration ≥ 5 years (OR = 3.711, p = 0.013), C-reactive protein (CRP) level ≥ 3.8 mg/dL (OR = 2.187, p = 0.044), and previous joint surgery (OR = 2.147, p = 0.021) as predictors for VS aggravation. Pre-existing VS (OR = 2.252, p = 0.024) and CRP ≥ 1.0 mg/dL (OR = 2.139, p = 0.013) were disclosed as predictors for SAS aggravation. Low disease activity and clinical remission before the development of VS and advanced peripheral joint destruction are essential to prevent progressive cervical spine instability in RA.Nov. 2024, Scientific reports, 14(1) (1), 26821 - 26821, English, International magazineScientific journal
- BACKGROUND: Pediatric lumbar spondylolysis, a stress fracture of the lumbar spine, frequently affects young athletes, and nonoperative treatment is often the first choice of management. Because the union rate in lumbar spondylolysis is lower than that in general fatigue fractures, identifying risk factors for nonunion is essential for optimizing treatment. PURPOSE: To determine the risk factors for nonunion after nonoperative treatment of acute pediatric lumbar spondylolysis through multivariate analysis. STUDY DESIGN: Case-control study; Level of evidence, 3. METHODS: We analyzed 574 pediatric patients (mean age, 14.3 ± 1.9 years) with lumbar spondylolysis who underwent nonoperative treatment between 2015 and 2022. Nonoperative treatment included the elimination of sports activities, bracing, and weekly athletic rehabilitation, with follow-up computed tomography. Patient data, lesion characteristics, sports history, presence of spina bifida occulta at the lamina with a lesion or at the lumbosacral spine excluding the lesion level, and lumbosacral parameters were examined. Differences between the union and nonunion groups were investigated using multivariate analysis to determine the risk factors for nonunion. RESULTS: Of the 574 patients, 81.7% achieved bone union. Multivariate analysis revealed that an L5 lesion and the progression of the main and contralateral lesion stages were significant independent risk factors for nonunion. An L5 lesion had a lower union rate than non-L5 lesions. As the main lesion progressed, the likelihood of nonunion increased significantly, and the progression of the contralateral lesion also showed a similar trend. Spina bifida occulta and lumbosacral parameters were not significant predictors of nonunion in this study. CONCLUSION: We identified the L5 lesion level and the progression of the main and contralateral lesion stages as independent risk factors for nonunion in pediatric lumbar spondylolysis after nonoperative treatment. These findings aid in treatment decision-making. When bone union cannot be expected with nonoperative treatment, symptomatic treatment is required without prolonged external fixation and rest, and without aiming for bone union. Individualized treatment plans are crucial based on identified risk factors.Sep. 2024, The American journal of sports medicine, 52(11) (11), 2866 - 2873, English, International magazineScientific journal
- Sep. 2024, Neurospine, 21(3) (3), 865 - 867, English, International magazineScientific journal
- STUDY DESIGN: Retrospective case series. OBJECTIVE: To report the detailed bone fusion rates and duration of treatment in unilateral and bilateral cases of pediatric lumbar spondylolysis (LS). SUMMARY OF BACKGROUND DATA: Early diagnosis and optimal conservative management for LS are crucial for achieving bony healing without surgery. However, existing research on the conservative treatment of pediatric LS, particularly regarding bone union rates and treatment duration for each stage of bilateral spondylolysis, is limited. METHODS: We retrospectively analyzed 590 pediatric patients (522 boys and 68 girls) under 18 years of age diagnosed with LS and treated conservatively from 2015 to 2021. The diagnosis was based on computed tomography scans and magnetic resonance imaging findings, with stages classified as very early, early, progressive, or terminal. Patient background, sports history, level and stage of spondylolysis, presence of spina bifida occulta, bone union rate, duration of conservative treatment, and recurrence rate were retrospectively analyzed. RESULTS: The overall bone union rate was 81.9%, with a mean conservative treatment duration of 53.7 days. Unilateral LS cases showed decreased bone union rates with stage advancement (very early; 98.2%, early; 96.0%, progressive; 64.3%). Bilateral LS cases with progressive or terminal stage demonstrated low bone union rates (very early/very early; 100%, early/very early; 94.1%, progressive/very early; 66.7%, early/early; 82.9%, progressive/early; 32.3%, progressive/progressive; 23.7%, very early/terminal; 0%, early/terminal; 50.0%, progressive/terminal; 11.1%). The duration of conservative treatment extended as the stage of the main and contralateral lesions progressed, ranging from 39.1 days (very early/none) to 105 days (progressive/terminal). The recurrence rate after bone fusion was 16.6%, with no differences based on lesion stage. CONCLUSIONS: In this series of 590 patients, conservative treatment yielded high bone union rates for pediatric LS. However, union rates decreased with stage advancement, especially in bilateral cases. These findings provide valuable insights for prognosticating natural history and outcome regarding LS treatment, bone union, and return to activity.Aug. 2024, Spine, 49(15) (15), 1085 - 1091, English, International magazineScientific journal
- BACKGROUND: Sacral fatigue fractures are a rare injury but should be considered as a differential diagnosis for low back and buttock pain in young adults. Collective reports are limited, most of which have focused on long-distance runners. PURPOSE: To investigate the characteristics of sacral fatigue fractures in adolescents. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: We analyzed patient background characteristics, physical examination and imaging findings, and treatment courses of those diagnosed with sacral fatigue fractures using magnetic resonance imaging. RESULTS: Among 34 patients with sacral fatigue fractures, 15 and 19 were male and female patients, respectively, with an age range of 11 to 19 years (mean age, 15.0 years). Almost all patients were athletes, and 29 patients performed their sport ≥5 times a week. Long-distance runners were the most commonly affected, comprising 7 patients, and participants in other common sports such as baseball (6 patients), basketball (4 patients), and soccer (3 patients) were also affected. Physical examination revealed tension sign (Lasègue test) on the affected side in 6 patients and tight hamstrings in 24 patients. Imaging findings included 18 patients with right-side involvement, 12 with left-side involvement, and 4 with involvement on both sides. In 11 patients, spina bifida occulta was observed at S1 and 8 patients had a history of lumbar spondylolysis with 4 patients having concurrent sacral fatigue fractures. Physical therapy was performed concurrently with the cessation of exercise, and return to exercise was permitted if the pain had been relieved after 1 month. All patients returned to sports at a median of 48 days (range, 20-226 days) after symptom onset. However, 2 patients experienced recurrence (1 patient on the ipsilateral side and 1 patient on the contralateral side). CONCLUSION: Sacral stress fractures are not limited to long-distance runners in this population and can manifest as lower back pain or buttock pain in athletes participating in a variety of sports. Although the course of treatment was generally good, the possibility of recurrence must always be considered.Jul. 2024, The American journal of sports medicine, 52(8) (8), 2046 - 2054, English, International magazineScientific journal
- Introduction: Evaluating the risk of postoperative complications is essential for making decisions in patients with spinal metastases. Recent studies have shown that frailty is a predictor of surgical outcomes in cancer surgery and spinal surgery. However, the association of frailty with postoperative complications in spinal metastasis surgery remains controversial. Therefore, the aim of this study was to elucidate the risk factors for postoperative complications in spinal metastasis surgery with a focus on frailty. Methods: A total of 241 patients with spinal metastases who underwent palliative surgery from 2015 to 2021 at our institution were enrolled. The Clavien-Dindo classification was used to assess postoperative complications with scores ≥ Grade II defined as complications. Data regarding demographics (age, sex, body mass index, and primary cancer) and preoperative clinical factors (new Katagiri score, Frankel grade, performance status, radiotherapy, chemotherapy, spinal instability neoplastic score, modified Frailty Index-11 (mFI), diabetes mellitus, and serum albumin levels) were collected. Univariable and multivariable analyses were performed to identify independent risk factors for postoperative complications (p < 0.05). Results: In 47 of 241 (19.5%) patients, 57 postoperative complications were observed. The most common complications were wound infection/dehiscence, urinary tract infection, and pneumonia. On univariable analysis, male sex (p = 0.098), preoperative radiotherapy (p = 0.028), mFI (p < 0.001), Frankel classification (p = 0.051) and preoperative molecular targeted drugs (p = 0.030) were considered potential risk factors. The cut-off value of mFI was calculated to be 0.23 (sensitivity, 46.8%; specificity, 79.9%). On multivariate analysis, mFI ≥ 0.23 (odds ratio (OR), 2.82; 95% confidence interval (CI), 1.39-5.70; p = 0.003) and preoperative radiotherapy (OR, 2.11; 95% CI, 1.00-4.44; p = 0.049) were identified as significant risk factors. In particular, urinary tract infection (p = 0.012) and pneumonia (p = 0.037) were associated with mFI ≥ 0.23. Furthermore, the severity of postoperative complications was positively correlated with mFI (p < 0.001). Conclusions: An mFI ≥ 0.23 and history of preoperative radiotherapy were associated with postoperative complications of spinal metastasis surgery.The Japanese Society for Spine Surgery and Related Research, Jun. 2024, Journal of Spine Research, 15(6) (6), 893 - 900, Japanese
- OBJECTIVE: Spine surgeons are often at risk of radiation exposure due to intraoperative fluoroscopy, leading to health concerns such as carcinogenesis. This is due to the increasing use of percutaneous pedicle screw (PPS) in spinal surgeries, resulting from the widespread adoption of minimally invasive spine stabilization. This study aimed to elucidate the effectiveness of smart glasses (SG) in PPS insertion under fluoroscopy. METHODS: SG were used as an alternative screen for fluoroscopic images. Operators A (2-year experience in spine surgery) and B (9-year experience) inserted the PPS into the bilateral L1-5 pedicles of the lumbar model bone under fluoroscopic guidance, repeating this procedure twice with and without SG (groups SG and N-SG, respectively). Each vertebral body's insertion time, radiation dose, and radiation exposure time were measured, and the deviation in screw trajectories was evaluated. RESULTS: The groups SG and N-SG showed no significant difference in insertion time for the overall procedure and each operator. However, group SG had a significantly shorter radiation exposure time than group N-SG for the overall procedure (109.1 ± 43.5 seconds vs. 150.9 ± 38.7 seconds; p = 0.003) and operator A (100.0 ± 29.0 seconds vs. 157.9 ± 42.8 seconds; p = 0.003). The radiation dose was also significantly lower in group SG than in group N-SG for the overall procedure (1.3 ± 0.6 mGy vs. 1.7 ± 0.5 mGy; p = 0.023) and operator A (1.2 ± 0.4 mGy vs. 1.8 ± 0.5 mGy; p = 0.013). The 2 groups showed no significant difference in screw deviation. CONCLUSION: The application of SG in fluoroscopic imaging for PPS insertion holds potential as a useful method for reducing radiation exposure.Jun. 2024, Neurospine, 21(2) (2), 432 - 439, English, International magazineScientific journal
- OBJECTIVE: To evaluate the preoperative and perioperative predictors of persistent leg numbness following lumbar fusion in patients aged ≥ 75 years. METHODS: This single-center retrospective study examined 304 patients aged ≥ 75 years who underwent lumbar fusion for lumbar degenerative disease (102 men, 202 women; mean age, 79.2 [75-90] years). The visual analogue scale (VAS) score for leg numbness was examined preoperatively and at 2 years postoperatively. The persistent leg numbness group included patients with a 2-year postoperative VAS score for leg numbness ≥ 5 points. The demographic data were also reviewed. A multivariate stepwise logistic regression analysis was performed for variables with univariate analysis values of p < 0.2 on univariate analysis. RESULTS: In total, 71 patients (23.4%) experienced persistent postoperative leg numbness. Multivariate logistic regression analysis revealed that a history of lumbar decompression, longer symptom duration, and a preoperative VAS score for leg numbness ≥ 5 points were associated with greater postoperative persistent leg numbness following lumbar fusion. In contrast, other factors, such as sex, body mass index, vertebral fracture, diabetes mellitus, depression, symptom duration, dural injury, operative time, and estimated blood loss, were not. CONCLUSION: A history of preoperative lumbar decompression, longer symptom duration, and greater preoperative VAS scores for leg numbness were preoperative predictors of persistent postoperative leg numbness following lumbar fusion in older patients. Although lumbar fusion is expected to improve leg numbness, surgeons should consider the surgical history, duration, and preoperative numbness intensity and explain the potential postoperative persistent leg numbness in advance.Jun. 2024, Neurospine, 21(2) (2), 596 - 605, English, International magazineScientific journal
- May 2024, Spine surgery and related research, 8(3) (3), 338 - 341, English, Domestic magazineScientific journal
- BACKGROUND: Low back pain is a global health problem that originated mainly from intervertebral disc degeneration (IDD). Autophagy, negatively regulated by the phosphatidylinositol 3-kinase (PI3K)/Akt/mammalian target of rapamycin (mTOR) signaling pathway, prevents metabolic and degenerative diseases by removing and recycling damaged cellular components. Despite growing evidence that autophagy occurs in the intervertebral disc, the regulation of disc cellular autophagy is still poorly understood. METHODS: Annulus fibrosus (rAF) cell cultures derived from healthy female rabbit discs were used to test the effect of autophagy inhibition or activation on disc cell fate and matrix homeostasis. Specifically, different chemical inhibitors including rapamycin, 3-methyladenine, MK-2206, and PP242 were used to modulate activities of different proteins in the PI3K/Akt/mTOR signaling pathway to assess IL-1β-induced cellular senescence, apoptosis, and matrix homeostasis in rAF cells grown under nutrient-poor culture condition. RESULTS: Rapamycin, an inhibitor of mTOR complex 1 (mTORC1), reduced the phosphorylation of mTOR and its effector p70/S6K in rAF cell cultures. Rapamycin also induced autophagic flux as measured by increased expression of key autophagy markers, including LC3 puncta number, LC3-II expression, and cytoplasmic HMGB1 intensity and decreased p62/SQSTM1 expression. As expected, IL-1β stimulation promoted rAF cellular senescence, apoptosis, and matrix homeostatic imbalance with enhanced aggrecanolysis and MMP-3 and MMP-13 expression. Rapamycin treatment effectively mitigated IL-1β-mediated inflammatory stress changes, but these alleviating effects of rapamycin were abrogated by chemical inhibition of Akt and mTOR complex 2 (mTORC2). CONCLUSIONS: These findings suggest that rapamycin blunts adverse effects of inflammation on disc cells by inhibiting mTORC1 to induce autophagy through the PI3K/Akt/mTOR pathway that is dependent on Akt and mTORC2 activities. Hence, our findings identify autophagy, rapamycin, and PI3K/Akt/mTOR signaling as potential therapeutic targets for IDD treatment.Mar. 2024, JOR spine, 7(1) (1), e1303, English, International magazineScientific journal
- Mar. 2024, Neurospine, 21(1) (1), 179 - 181, English, International magazineScientific journal
- OBJECTIVE: To elucidate the patient characteristics and outcomes of emergency surgery for spinal metastases and identify risk factors for emergency surgery. METHODS: We prospectively analyzed 216 patients with spinal metastases who underwent palliative surgery from 2015 to 2020. The Eastern Cooperative Oncology Group performance status, Barthel index, EuroQol-5 dimension (EQ5D), and neurological function were assessed at surgery and at 1, 3, and 6 months postoperatively. Multivariate analysis was performed to identify risk factors for emergency surgery. RESULTS: In total, 146 patients underwent nonemergency surgery and 70 patients underwent emergency surgery within 48 hours of diagnosis of a surgical indication. After propensity score matching, we compared 61 patients each who underwent nonemergency and emergency surgery. Regardless of matching, the median performance status and the mean Barthel index and EQ5D score showed a tendency toward worse outcomes in the emergency than nonemergency group both preoperatively and 1 month postoperatively, although the surgery greatly improved these values in both groups. The median survival time tended to be shorter in the emergency than nonemergency group. The multivariate analysis showed that lesions located at T3-10 (p = 0.002; odds ratio [OR], 2.92; 95% confidence interval [CI], 1.48-5.75) and Frankel grades A-C (p < 0.001; OR, 4.91; 95% CI, 2.45-9.86) were independent risk factors for emergency surgery. CONCLUSION: Among patients with spinal metastases, preoperative and postoperative subjective health values and postoperative survival are poorer in emergency than nonemergency surgery. Close attention to patients with T3-10 metastases is required to avoid poor outcomes after emergency surgery.Mar. 2024, Neurospine, 21(1) (1), 314 - 327, English, International magazineScientific journal
- (一社)日本脊椎脊髄病学会, Feb. 2024, Journal of Spine Research, 15(3) (3), 330 - 330, Japanese
- (一社)日本脊椎脊髄病学会, Feb. 2024, Journal of Spine Research, 15(3) (3), 650 - 650, Japanese
- STUDY DESIGN: Multicenter case-control study. OBJECTIVE: To identify imaging characteristics of the cervical spine in patients with retro-odontoid pseudotumor (ROP) without rheumatoid arthritis (RA) and determine the pathogenesis of ROP. SUMMARY OF BACKGROUND DATA: ROP results from proliferative changes in the soft tissue of the atlantoaxial junction surrounding the region of the transverse ligament, and is commonly seen in RA patients. However, the pathogenesis of ROP caused by mechanical instability of the upper cervical spine in patients without RA is yet to be explained. METHODS: We collected imaging data (preoperative radiographs, magnetic resonance imaging [MRI], and computed tomography [CT]) of patients who underwent surgery between April 2011 and March 2022 at the three university hospitals for ROP (cases) and cervical spondylotic myelopathy (as age, sex, and institution matched controls). The two groups were compared for different parameters on cervical dynamic radiographs, MRI, and CT. RESULTS: The ROP group consisted of 42 patients, and the control group comprised 168 patients. C2-C7 range of motion was significantly smaller in the ROP group (25.8 ± 2.6°) compared to the control group (33.0 ± 1.0°). C2-C7 sagittal vertical axis was significantly larger in the ROP group than the control group (39.3 ± 3.6 mm versus 32.2 ± 1.3 mm). MRI and CT assessment showed progressive degeneration at all intervertebral levels in the ROP group. A significant positive correlation was observed between the thickness of the soft tissue posterior to the dental process and the atlantodental interval in the flexion position (r = 0.501). CONCLUSION: The development of ROP was associated with degeneration of facet joints and intervertebral discs in the middle and lower cervical spine. Our findings suggest that decreased mobility of the middle and lower cervical spine may cause instability in the upper cervical spine, leading to the formation of ROP.Jan. 2024, Spine, 49(19) (19), E315-E321, English, International magazineScientific journal
- BACKGROUND: Cervical spondylotic myelopathy (CSM) is the most common degenerative dysfunction of the spinal cord in the cervical spine in patients older than 55 years. The Japanese Orthopedic Association developed a scoring system to quantify clinical impairment of CSM patients, allocate them according to the degree of impairment, and suggest best timing for surgery. The original version evaluates the upper limb motor function through the ability of feeding with chopsticks, which are not intrinsic in western populations. To compare severity and treatment improvement of any diseases, it is preferable to have modified and translated versions of questionnaires and scores closest to the original ones. The authors present a prospective cohort study to validate the 17-point Brazilian Portuguese translated version of the modified Japanese Orthopedic Association (mJOA-BR17) survey. METHODS: Patients with CSM (n = 36) were allocated to the disease group, while age- and sex-matched healthy volunteers (n = 34) were recruited for the control group. Comparison of statistical analysis of mJOA-BR17 domains for each group was established. After the translation and adaptation of mJOA-BR17, the validation was made through application to the 2 groups. RESULTS: There were statistical differences between groups in total mJOA-BR17 score (CSM, 14.14 ± 2.92; control, 16.68 ± 0.59: P < 0.001), lower limbs motor function (CSM, 3.25 ± 1.02; control, 3.91 ± 0.29: P < 0.001), upper limbs sensory function (CSM, 1.17 ± 0.81; control, 1.86 ± 0.36: P < 0.001), lower limbs sensory function (CSM, 1.62 ± 0.64; control, 2.0 ± 0.0: P < 0.001), and bladder function (CSM, 2.69 ± 0.52; control, 2.97 ± 0.17: P = 0.005). The receiver operating characteristic curve was 0.81, indicating usefulness of the mJOA-BR17 score to identify patients with CSM from healthy controls. CONCLUSIONS: The mJOA-BR17 demonstrated similarity, applicability, and good understanding in comparison to the English-modified version of 17-point JOA score for CSM, becoming a valuable tool to quantify and differentiate CSM patients from healthy individuals.Dec. 2023, International journal of spine surgery, 17(6) (6), 875 - 881, English, International magazineScientific journal
- Background and Objectives: Bone metastasis cancer boards (BMCBs) focusing on the management of bone metastases have been gathering much attention. However, the association of BMCBs with spinal surgery in patients with spinal metastases remains unclear. In this retrospective single-center observational study, we aimed to clarify the effect of a BMCB on spinal metastasis treatment. Materials and Methods: We reviewed consecutive cases of posterior decompression and/or instrumentation surgery for metastatic spinal tumors from 2008 to 2019. The BMCB involved a team of specialists in orthopedics, rehabilitation medicine, radiation oncology, radiology, palliative supportive care, oncology, and hematology. We compared demographics, eastern cooperative oncology group performance status (ECOGPS), Barthel index (BI), number of overall versus emergency surgeries, and primary tumors between patients before (2008-2012) and after (2013-2019) BMCB establishment. Results: A total of 226 patients including 33 patients before BMCB started were enrolled; lung cancer was the most common primary tumor. After BMCB establishment, the mean patient age was 5 years older (p = 0.028), the mean operating time was 34 min shorter (p = 0.025), the mean hospital stay was 34.5 days shorter (p < 0.001), and the mean BI before surgery was 12 points higher (p = 0.049) than before. Moreover, the mean number of surgeries per year increased more than fourfold to 27.6 per year (p < 0.01) and emergency surgery rates decreased from 48.5% to 29.0% (p = 0.041). Patients with an unknown primary tumor before surgery decreased from 24.2% to 9.3% (p = 0.033). Postoperative deterioration rates from 1 to 6 months after surgery of ECOGPS and BI after BMCB started were lower than before (p = 0.045 and p = 0.027, respectively). Conclusion: The BMCB decreased the emergency surgery and unknown primary tumor rate despite an increase in the overall number of spinal surgeries. The BMCB also contributed to shorter operation times, shorter hospital stays, and lower postoperative deterioration rates of ECOGPS and BI.Nov. 2023, Medicina (Kaunas, Lithuania), 59(12) (12), English, International magazineScientific journal
- It is our pleasure to announce the publication of the Special Issue "Regeneration for Spinal Diseases 3.0" in the International Journal of Molecular Sciences (ISSN 1422-0067) [...].Nov. 2023, International journal of molecular sciences, 24(22) (22), English, International magazine
- Sep. 2023, Neurospine, 20(3) (3), 849 - 851, English, International magazineScientific journal
- We investigated the effects of the cytokine inhibitors IL-1 receptor antagonist (IL-1Ra) and soluble tumor necrosis factor receptor-1 (sTNFR1) on the extracellular matrix metabolism of human intervertebral discs (IVDs) and the roles of IL-1β and TNF in the homeostasis of IVD cells. The 1.2% alginate beads and the explants obtained from 35 human lumbar discs were treated with cytokine inhibitors. Extracellular matrix metabolism was evaluated by proteoglycan (PG) and collagen syntheses and IL-1β, TNF, and IL-6 expressions after three days of culture in the presence or absence of IL-1Ra, sTNFR1, and cycloheximide. Simultaneous treatment with IL-1Ra and sTNFR1 stimulated PG and collagen syntheses in the NP and AF cells and explants. The IL-1β concentration was significantly correlated to the relative increase in PG synthesis in AF explants after simultaneous cytokine inhibitor treatment. The relative increase in PG synthesis induced by simultaneous cytokine treatment was significantly higher in an advanced grade of MRI. Expressions of IL-1β and TNF were upregulated by each cytokine inhibitor, and simultaneous treatment suppressed IL-1β and TNF productions. In conclusion, IL-1Ra and sTNFR1 have the potential to increase PG and collagen synthesis in IVDs. IL-1β and TNF have a feedback pathway to maintain optimal expression, resulting in the control of homeostasis in IVD explants.Aug. 2023, International journal of molecular sciences, 24(15) (15), English, International magazineScientific journal
- STUDY DESIGN: A single-center retrospective study. PURPOSE: To research the predictive factors associated with postoperative patient satisfaction 1 year after minimally invasive transforaminal lumbar interbody fusion (MIS-TLIF), a minimally invasive procedure for lumbar degenerative disease. OVERVIEW OF LITERATURE: There have been reports of numerous variables influencing patient satisfaction with lumbar surgery; however, there have been few investigations on MIS are limited. METHODS: This study included 229 patients (107 men and 122 women; mean age, 68.9 years) who received one or two levels of MISTLIF, and the patient's age, gender, disease, paralysis, preoperative physical functions, duration of symptom(s), and surgery-associated factors (waiting for surgery, number of surgical levels, surgical time, and intraoperative blood loss) were studied. Radiographic characteristics and clinical outcomes such as Oswestry Disability Index (ODI) scores and Visual Analog Scale (VAS; 0-100) ODI scores for low back pain, leg pain, and numbness were studied. One year following surgery, patient satisfaction (defined as satisfaction for surgery and for present condition; 0-100) was assessed using VAS and its relationships with investigation factors were examined. RESULTS: The mean VAS scores of satisfaction for surgery and for present condition were 88.6 and 84.2, respectively. The results of multiple regression analysis showed that preoperative adverse factors of satisfaction for surgery were being elderly (β =-0.17, p =0.023), high preoperative low back pain VAS scores (β =-0.15, p =0.020), and postoperative adverse factors were high postoperative ODI scores (β =-0.43, p <0.001). In addition, the preoperative adverse factor of satisfaction for present condition was high preoperative low back pain VAS scores (β =-0.21, p =0.002), and postoperative adverse factors were high postoperative ODI scores (β =-0.45, p <0.001) and high postoperative low back pain VAS scores (β =-0.26, p =0.001). CONCLUSIONS: According to this study, significant preoperative low back pain and high postoperative ODI score after surgery are linked to patient unhappiness.Aug. 2023, Asian spine journal, 17(4) (4), 750 - 760, English, International magazineScientific journal
- (株)先端医学社, Aug. 2023, Loco Cure, 9(3) (3), 243 - 248, Japanese【成人脊柱変形とロコモ】脊椎矢状面アライメント・体幹バランスからみたロコモ患者へのロコトレ介入効果 手術によらない成人脊柱変形治療の可能性
- The number of advanced-age patients with spinal metastases is rising. This study was performed to clarify the characteristics and surgical outcomes of spinal metastases in advanced-age patients. We prospectively analyzed 216 patients with spinal metastases from 2015 to 2020 and divided them into three age groups: <70 years (n = 119), 70-79 years (n = 73), and ≥80 years (n = 24). Although there were no significant intergroup differences in preoperative characteristics and surgery-related factors except for age, patients aged ≥80 years tended to have a worse performance status (PS), Barthel index, and EuroQol-5 dimension (EQ-5D) before and after surgery than the other two groups. Although the median PS, mean Barthel index and mean EQ-5D greatly improved postoperatively in each group, the median PS and mean Barthel index at 6 months and the mean EQ-5D at 1 month postoperatively were significantly poorer in the ≥80-year group than the 70-79-year group. The rates of postoperative complications and re-deterioration of the EQ-5D were significantly higher in the oldest group than in the other two groups. Although surgery for spinal metastases improved the PS, Barthel index, and EQ-5D regardless of age, clinicians should be aware of the poorer outcomes and higher complication rates in advanced-age patients.Jul. 2023, Journal of clinical medicine, 12(14) (14), English, International magazineScientific journal
- BACKGROUND: Degenerative disc disease, a major cause of low back pain and associated neurological symptoms, is a global health problem with the high morbidity, workforce loss, and socioeconomic burden. The present surgical strategy of disc resection and/or spinal fusion results in the functional loss of load, shock absorption, and movement; therefore, the development of new biological therapies is demanded. This achievement requires the understanding of intervertebral disc cell fate during aging and degeneration. METHODS: Literature review was performed to clarify the current concepts and future perspectives of disc cell fate, focused on apoptosis, senescence, and autophagy. RESULTS: The intervertebral disc has a complex structure with the nucleus pulposus (NP), annulus fibrosus (AF), and cartilage endplates. While the AF arises from the mesenchyme, the NP originates from the notochord. Human disc NP notochordal phenotype disappears in adolescence, accompanied with cell death induction and chondrocyte proliferation. Discs morphologically and biochemically degenerate from early childhood as well, thereby suggesting a possible involvement of cell fate including age-related phenotypic changes in the disease process. As the disc is the largest avascular organ in the body, nutrient deprivation is a suspected contributor to degeneration. During aging and degeneration, disc cells undergo senescence, irreversible growth arrest, producing proinflammatory cytokines and matrix-degradative enzymes. Excessive stress ultimately leads to programmed cell death including apoptosis, necroptosis, pyroptosis, and ferroptosis. Autophagy, the intracellular degradation and recycling system, plays a role in maintaining cell homeostasis. While the incidence of apoptosis and senescence increases with age and degeneration severity, autophagy can be activated earlier, in response to limited nutrition and inflammation, but impaired in aged, degenerated discs. The phosphatidylinositol 3-kinase (PI3K)/Akt/mammalian target of rapamycin (mTOR) is a signal integrator to determine disc cell fate. CONCLUSIONS: Cell fate and microenvironmental regulation by modulating PI3K/Akt/mTOR signaling is a potential biological treatment for degenerative disc disease.Jun. 2023, North American Spine Society journal, 14, 100210 - 100210, English, International magazineScientific journal
- INTRODUCTION: Patients with nonidiopathic scoliosis often have a high risk associated with general anesthesia because of cardiac or pulmonary dysfunction secondary to underlying diseases. Base excess has been reported as a predictor in the management of trauma and cancer, although not yet in scoliosis. This study was performed to clarify the surgical outcomes and the association of perioperative complications with base excess in patients with nonidiopathic scoliosis who have a high risk associated with general anesthesia. METHODS: Patients with nonidiopathic scoliosis who were referred to our institution from 2009 to 2020 because of their high risk associated with general anesthesia were retrospectively enrolled. High-risk factors for anesthesia were determined by a senior anesthesiologist and categorized into circulatory or pulmonary dysfunction. Perioperative complications were analyzed using the Clavien-Dindo classification; severe complications were defined as grade ≥III. We investigated high-risk factors for anesthesia, underlying diseases, preoperative and postoperative Cobb angle, surgery-related factors, base excess, and postoperative management. These variables were statistically compared between patients with and without complications. RESULTS: Thirty-six patients (mean age, 17.9 years old; range, 11-40 years old) were enrolled (two patients declined surgery). High-risk factors were circulatory dysfunction in 16 patients and pulmonary dysfunction in 20 patients. The mean Cobb angle improved from 85.1° (36°-128°) preoperatively to 43.6° (9°-83°) postoperatively. Three intraoperative complications and 23 postoperative complications occurred in 20 (55.6%) patients. Severe complications occurred in 10 (27.8%) patients. All patients underwent postoperative intensive care unit management after posterior all-screw construction. A large preoperative Cobb angle (p=0.021) and base excess outliers (>3 or <-3 mEq/L) (p=0.005) were significant risk factors for complications. CONCLUSIONS: Patients with nonidiopathic scoliosis who have a high risk associated with general anesthesia have a higher complication rate. Preoperative large deformity and base excess (>3 or <-3 mEq/L) could be predictors of complications.May 2023, Spine surgery and related research, 7(3) (3), 268 - 275, English, Domestic magazineScientific journal
- Adiponectin, a hormone secreted by adipocytes, has anti-inflammatory effects and is involved in various physiological and pathological processes such as obesity, inflammatory diseases, and cartilage diseases. However, the function of adiponectin in intervertebral disc (IVD) degeneration is not well understood. This study aimed to elucidate the effects of AdipoRon, an agonist of adiponectin receptor, on human IVD nucleus pulposus (NP) cells, using a three-dimensional in vitro culturing system. This study also aimed to elucidate the effects of AdipoRon on rat tail IVD tissues using an in vivo puncture-induced IVD degeneration model. Analysis using quantitative polymerase chain reaction demonstrated the downregulation of gene expression of proinflammatory and catabolic factors by interleukin (IL)-1β (10 ng/mL) in human IVD NP cells treated with AdipoRon (2 μM). Furthermore, western blotting showed AdipoRon-induced suppression of p65 phosphorylation (p < 0.01) under IL-1β stimulation in the adenosine monophosphate-activated protein kinase (AMPK) pathway. Intradiscal administration of AdipoRon was effective in alleviating the radiologic height loss induced by annular puncture of rat tail IVD, histomorphological degeneration, production of extracellular matrix catabolic factors, and expression of proinflammatory cytokines. Therefore, AdipoRon could be a new therapeutic candidate for alleviating the early stage of IVD degeneration.May 2023, International journal of molecular sciences, 24(10) (10), English, International magazineScientific journal
- Background and Objectives: Cervical spondylotic myelopathy (CSM) is a degenerative disease and occurs more frequently with age. In fact, the development of non-herniated CSM under age 30 is uncommon. Therefore, a retrospective case series was designed to clarify clinical and radiological characteristics of young adult patients with CSM under age 30. Materials and Methods: A total of seven patients, all men, with non-herniated, degenerative CSM under age 30 were retrieved from the medical records of 2598 hospitalized CSM patients (0.27%). Patient demographics and backgrounds were assessed. The sagittal alignment, congenital canal stenosis, dynamic canal stenosis, and vertebral slips in the cervical spine were radiographically evaluated. The presence of degenerative discs, intramedullary high-signal intensity lesions, and sagittal spinal cord compression on T2-weighted magnetic resonance images (MRIs) and axial spinal cord deformity on T1-weighted MRIs was identified. Results: All patients (100.0%) had relatively high daily sports activities and/or jobs requiring frequent neck extension. Cervical spine radiographs revealed the sagittal alignment as the "reverse-sigmoid" type in 57.1% of patients and "straight" type in 28.6%. All patients (100.0%) presented congenital cervical stenosis with the canal diameter ≤12 mm and/or Torg-Pavlov ratio <0.80. Furthermore, all patients (100.0%) developed dynamic stenosis with the canal diameter ≤12 mm and/or posterior vertebral slip ≥2 mm at the neurologically responsible segment in full-extension position. In MRI examination, all discs at the neurologically responsible level (100.0%) were degenerative. Intramedullary abnormal intensity lesions were detected in 85.7% of patients, which were all at the neurologically responsible disc level. Conclusions: Patients with non-herniated, degenerative CSM under age 30 are rare but more common in men with mild sagittal "reverse-sigmoid" or "straight" deformity and congenital canal stenosis. Relatively high daily activities, accumulating neck stress, can cause an early development of intervertebral disc degeneration and dynamic canal stenosis, leading to CSM in young adults.Mar. 2023, Medicina (Kaunas, Lithuania), 59(3) (3), English, International magazineScientific journal
- BACKGROUND Myxofibrosarcoma involving the spine is a rare and intractable disease. Although wide surgical resection is the mainstay of treatment, it is often difficult to complete marginal en-bloc resection due to adjacent neurovascular components in the spine. Separation surgery, a partial resection to achieve circumferential separation and high-dose irradiation such as postoperative intensity-modulated radiation therapy, has received much attention as a new therapy for spinal tumors. However, little evidence regarding separation surgery with intensity-modulated radiation therapy for a spinal myxofibrosarcoma exists. CASE REPORT We present a case of a 75-year-old man with progressive myelopathy. Radiological examination revealed severe spinal cord compression due to an unknown widespread multiple tumor in the cervical and thoracic spine. Computed tomography-guided biopsy showed high-grade sarcoma. Positron emission tomography detected no other tumors in the body. Separation surgery was therefore performed with posterior stabilization. Hematoxylin and eosin staining showed storiform cellular infiltrates and pleomorphic cell nuclei. Histopathology identified high-grade myxofibrosarcoma. Postoperative intensity-modulated radiation therapy of 60 Gy in 25 fractions was completed without any adverse effects. The patient had greatly improved neurological function, was capable of walking with a cane, and had no recurrence for at least 1 year after surgery. CONCLUSIONS We reported a case of an unresectable high-grade myxofibrosarcoma of the spine successfully treated with the combination of separation surgery and postoperative intensity-modulated radiation therapy. This combination therapy is a relatively safe and effective treatment option in patients with impending neurological damage by unresectable sarcomas when total en-bloc resection is challenging due to the size, location, or adhesion.Mar. 2023, Am J Case Rep, 24, e939368, English, International magazine[Refereed]Scientific journal
- (公社)日本整形外科学会, Mar. 2023, 日本整形外科学会雑誌, 97(2) (2), S289 - S289, Japanese脊椎転移術後創離開のリスク因子の検討と予防のための新たな試み Curved skin incision
- Background: Symptomatic spinal metastasis (SSM) decreases the activities of daily living (ADL) and quality of life of cancer patients. However, the risk factors for SSM onset remain unclear. This prospective cohort study aimed to statistically analyze the significant risk factors. Methods: From 2016 to 2018, 210 consecutive patients with spinal metastases were prospectively registered. Patients with SSM at the first consultation and those who were unable to be followed-up owing to poor general condition were excluded. The demographic factors (age, sex, primary cancer, performance status, and ADL), clinical factors (radiation therapy, chemotherapy, molecularly targeted drugs, and bone-modifying agents (BMAs)), and Spinal Neoplastic Instability Score (SINS) were evaluated. Multivariate analysis was performed to identify the risk factors for SSM onset. Furthermore, the threshold was calculated from the receiver operating characteristic curve using the Youden index. Results: Thirty-nine patients who presented with SSM at the first consultation and 43 patients who were unable to be followed-up owing to poor general condition were excluded. Finally, 128 asymptomatic patients were included. Thirty-seven patients (28.9%) developed SSM during the follow-up period. The total SINS (OR: 1.739; 95% CI: 1.345-2.250) was identified as the most significant factor. The cut-off value of the SINS was 9.5 (sensitivity: 67.6%; specificity: 83.5%). Twenty-five (62.5%) of the forty patients with a SINS ≥ 10 developed SSM within a mean of 5.5 months (95% CI: 1.17-9.83). Furthermore, all patients with a SINS ≥ 13 developed SSM (n = 5) within a mean of 1.37 months (95% CI: 0.0-3.01). Conclusions: This study identified the significant risk factors for SSM onset and the threshold of the SINS. If long-term survival is expected, patients with a SINS ≥ 10 should be considered for intervention to prevent SSM.Feb. 2023, Cancers (Basel), 15(4) (4), 1251, English, International magazine[Refereed]Scientific journal
- BACKGROUND: Primary spinal osteosarcoma is a rare and intractable disease. Although en bloc resection is favorable for longer survival, it is not always achievable. Separation surgery, a partial resection with circumferential separation to safely deliver high-dose irradiation including intensity-modulated radiation therapy (IMRT), has been recently indicated for patients with spinal cord compression secondary to solid tumor metastases. However, little evidence regarding this combination approach to spinal osteosarcoma exists. CASE PRESENTATION: We report a 55-year-old male patient with a T1 tumor who underwent urgent decompression surgery for epidural spinal cord compression. Pathological findings revealed primary osteosarcoma. Separation surgery, IMRT, and adjuvant chemotherapy were applied to reduce the symptoms of epidural spinal cord compression. The patient was alive without local recurrence at the 5-year follow-up. CONCLUSIONS: Separation surgery with IMRT can be a relatively safe and effective treatment option in patients with osteosarcoma adjacent to spinal cord when en-bloc resection is challenging.2023, Clinical medicine insights. Case reports, 16, 11795476231171891 - 11795476231171891, English, International magazineScientific journal
- A retrospective multicenter study. Body mass index (BMI) is recognized as an important determinant of osteoporosis and spinal postoperative outcomes; however, the specific impact of BMI on surgery for osteoporotic vertebral fractures (OVFs) remains inconclusive. This retrospective multicenter study investigated the impact of BMI on clinical outcomes following fusion surgery for OVFs. 237 OVF patients (mean age, 74.3 years; 48 men and 189 women) with neurological symptoms who underwent spinal fusion were included in this study. Patients were grouped by World Health Organization BMI categories: low BMI (<18.5 kg/m2), normal BMI (≥18.5 and <25 kg/m2), and high BMI (≥25 kg/m2). Patients' backgrounds, surgical method, radiological findings, pain measurements, activities of daily living (ADL), and postoperative complications were compared after a mean follow-up period of 4 years. As results, the proportion of patients able to walk independently was significantly smaller in the low BMI group (75.0%) compared with the normal BMI group (89.9%; P = .01) and the high BMI group (94.3%; P = .04). Improvement in the visual analogue scale for leg pain was significantly less in the low BMI group than the high BMI group (26.7 vs 42.8 mm; P = .046). Radiological evaluation, the Frankel classification, and postoperative complications were not significantly different among all 3 groups. Improvement of pain intensity and ADL in the high BMI group was equivalent or non-significantly better for some outcome measures compared with the normal BMI group. Leg pain and independent walking ability after fusion surgery for patients with OVFs improved less in the low versus the high BMI group. Surgeons may want to carefully evaluate at risk low BMI patients before fusion surgery for OVF because poor clinical results may occur.Ovid Technologies (Wolters Kluwer Health), Dec. 2022, Medicine (Baltimore), 101(52) (52), e32330 - e32330, English, International magazine[Refereed]Scientific journal
- Background and Objectives: The impact of the duration of symptoms (DOS) on postoperative clinical outcomes of patients with degenerative lumbar spinal diseases is important for determining the optimal timing of surgical intervention; however, the timing remains controversial. This prospective case−control study aimed to investigate the influence of the preoperative DOS on surgical outcomes in minimally invasive surgery-transforaminal lumbar interbody fusion (MIS-TLIF). Materials and Methods: Patients who underwent single-level TLIF for lumbar degenerative diseases between 2017 and 2018 were reviewed. Only patients with full clinical data during the 1-year follow-up period were included. The patients were divided into two groups (DOS < 12 months, group S; DOS ≥ 12 months, group L). The clinical outcomes, including the Oswestry disability index (ODI) and visual analog scale (VAS) for lower back pain, leg pain, and numbness, were investigated preoperatively and at 1, 3, and 6 months, as well as 1 year, after surgery. Furthermore, postoperative patient satisfaction 1 year after surgery was also surveyed. Results: A total of 163 patients were assessed: 60 in group S and 103 in group L. No differences in baseline characteristics and clinical outcomes were found. The ODI and VAS significantly improved from the baseline to each follow-up period (all p < 0.01). Group S had significantly lower ODI scores at 3 months (p = 0.019) and 6 months (p = 0.022). In addition, group S had significantly lower VAS scores for leg pain at 3 months (p = 0.027). In a comparison between both groups, only the patients with cauda equina symptoms showed that ODI and leg pain VAS scores at 3 months after surgery were significantly lower in group S (19.9 ± 9.1 vs. 14.1 ± 12.5; p = 0.037, 7.4 ± 13.9 vs. 14.7 ± 23.1; p = 0.032, respectively). However, the clinical outcomes were not significantly different between both groups 1 year after surgery. Patient satisfaction was also not significantly different between both groups. Conclusions: Patients with a shorter DOS tended to have a significantly slower recovery; however, clinical outcomes 1 year after surgery were good, regardless of the DOS.Dec. 2022, Medicina (Kaunas), 59(1) (1), 22, English, International magazine[Refereed]Scientific journal
- The effect of spine surgery for symptomatic spinal metastases (SSM) on patient prognosis remains unclear. This study aimed to reveal the prognosis of patients with SSM after spine surgery. One hundred twenty-two patients with SSM were enrolled in this prospective cohort study. The patients who received chemotherapy after enrollment were excluded. The decision of surgery depended on patient's willingness; the final cohort comprised 31 and 24 patients in the surgery and non-surgery groups, respectively. The patients were evaluated by their performance status (PS), activities of daily living (ADL) and ambulatory status. Survival was evaluated by the Kaplan-Meier method. The PS, ADL and ambulation were significantly improved in the surgery group compared to non-surgery group. The median survival was significantly longer in the surgery group (5.17 months, 95% confidence interval (CI) 3.27 to 7.07) than in the non-surgery group (2.23 months, 95% CI 2.03 to 2.43; p = 0.003). Furthermore, the patients with a better PS, ADL and ambulatory status had a significantly longer survival. Surgery improved the PS, ADL, ambulation and survival of patients with SSM. In the management of SSM, spine surgery is not only palliative but may also prolong survival.Oct. 2022, J Clin Med, 11(21) (21), 6227, English, International magazine[Refereed]Scientific journal
- It is our pleasure to announce the publication of the Special Issue “Regeneration for Spinal Diseases 2 [...]MDPI AG, Aug. 2022, Int J Mol Sci, 23(17) (17), 9710 - 9710, English, International magazine[Refereed][Invited]Scientific journal
- Growth differentiation factors (GDFs) regulate homeostasis by amplifying extracellular matrix anabolism and inhibiting pro-inflammatory cytokine production in the intervertebral disc (IVD). The aim of this study was to elucidate the effects of GDF-6 on human IVD nucleus pulposus (NP) cells using a three-dimensional culturing system in vitro and on rat tail IVD tissues using a puncture model in vivo. In vitro, Western blotting showed decreased GDF-6 expression with age and degeneration severity in surgically collected human IVD tissues (n = 12). Then, in moderately degenerated human IVD NP cells treated with GDF-6 (100 ng/mL), immunofluorescence demonstrated an increased expression of matrix components including aggrecan and type II collagen. Quantitative polymerase chain reaction analysis also presented GDF-6-induced downregulation of pro-inflammatory tumor necrosis factor (TNF)-α (p = 0.014) and interleukin (IL)-6 (p = 0.016) gene expression stimulated by IL-1β (10 ng/mL). Furthermore, in the mitogen-activated protein kinase pathway, Western blotting displayed GDF-6-induced suppression of p38 phosphorylation (p = 0.041) under IL-1β stimulation. In vivo, intradiscal co-administration of GDF-6 and atelocollagen was effective in alleviating rat tail IVD annular puncture-induced radiologic height loss (p = 0.005), histomorphological degeneration (p < 0.001), matrix metabolism (aggrecan, p < 0.001; type II collagen, p = 0.001), and pro-inflammatory cytokine production (TNF-α, p < 0.001; IL-6, p < 0.001). Consequently, GDF-6 could be a therapeutic growth factor for degenerative IVD disease.Mar. 2022, Cells, 11(7) (7), English, International magazineScientific journal
- OBJECTIVE: In the largest avascular low-nutrient intervertebral disc, resident cells would utilize autophagy, a stress-response survival mechanism by self-digestion and recycling wastes. Our goal was to elucidate the involvement of autophagy in disc homeostasis through RNA interference of autophagy-related gene 5 (Atg5). DESIGN: In vitro, small interfering RNAs (siRNAs) targeting autophagy-essential Atg5 were transfected into rat disc cells. Cell viability with levels of autophagy including Atg5 expression, apoptosis, and senescence was assessed under serum starvation and/or pro-inflammatory interleukin-1 beta (IL-1β) stimulation. In vivo, time-course autophagic flux was monitored following Alexa Fluor® 555-labeled Atg5-siRNA injection into rat tail discs. Furthermore, 24-h temporary static compression-induced disruption of Atg5 siRNA-injected discs was observed by radiography, histomorphology, and immunofluorescence. RESULTS: In disc cells, three different Atg5 siRNAs consistently suppressed autophagy with Atg5 protein knockdown (mean 44.4% [95% confidence interval: -51.7, -37.1], 51.5% [-80.5, -22.5], 62.3% [-96.6, -28.2]). Then, Atg5 knockdown reduced cell viability through apoptosis and senescence not in serum-supplemented medium (93.6% [-0.8, 21.4]) but in serum-deprived medium (66.4% [-29.8, -8.6]) further with IL-1β (44.5% [-36.9, -23.5]). In disc tissues, immunofluorescence detected intradiscal signals for the labeled siRNA even at 56-d post-injection. Immunoblotting found 56-d autophagy suppression with prolonged Atg5 knockdown (33.2% [-52.8, -5.3]). With compression, Atg5 siRNA-injected discs presented radiographic height loss ([-43.9, -0.8]), histological damage ([-5.5, -0.2]), and immunofluorescent apoptosis ([2.2, 22.2]) and senescence ([4.1, 19.9]) induction compared to control siRNA-injected discs at 56 d. CONCLUSIONS: This loss-of-function study suggests Atg5-dependent autophagy-mediated anti-apoptosis and anti-senescence. Autophagy could be a molecular therapeutic target for degenerative disc disease.Mar. 2022, Osteoarthritis Cartilage, 30(3) (3), 481 - 493, English, International magazine[Refereed]Scientific journal
- An electrical conductivity-measuring device (ECD) has recently been developed to support pedicle screw placement. However, no evidence exists regarding its efficacy for syndromic/neuromuscular scoliosis with extremely difficult screwing. We retrospectively reviewed 2010-2016 medical records of 21 consecutive syndromic/neuromuscular scoliosis patients undergoing free-hand segmental fixation surgery at our institution and compared the pedicle screw insertion accuracy and safety between 10 with a conventional non-ECD probe (2010-2013) and 11 with an ECD probe (2014-2016). We analyzed preoperative pedicle shape and postoperative screw placement in computed tomography. There were no significant differences between ECD and non-ECD groups in demographic, clinical, and treatment characteristics including scoliosis severity and pedicle diameter. The abandonment rate due to liquorrhea or perforation was lower in ECD (12.3%) than in non-ECD (26.7%) (p < 0.01). Acceptable insertion without perforation or <2-mm lateral/cranial position was more frequent in ECD (67.1%) than in non-ECD (56.9%) (p = 0.02). Critical ≥5-mm medial/caudal malposition was not seen in ECD (0.0%) but in non-ECD (2.4%) (p = 0.02). The perforation distance was shorter in ECD (2.2 ± 1.1 mm) than in non-ECD (2.6 ± 1.7 mm) (p = 0.01). Results involve small sample size, selection, performance, and learning curve biases; nevertheless, ECD could be useful for more accurate and safer pedicle screw placement in severe syndromic/neuromuscular scoliosis.Jan. 2022, Journal of clinical medicine, 11(2) (2), English, International magazineScientific journal
- Objective: To clarify the complications of posterior fusion for atlantoaxial instability (AAI) in children with Down syndrome and to discuss the significance of surgical intervention.Methods: Twenty pediatric patients with Down syndrome underwent posterior fusion for AAI between February 2000 and September 2018 (age, 6.1 ± 1.9 years). C1–2 or C1–3 fusion and occipitocervical fusion were performed in 14 and 6 patients, respectively. The past medical history, operation time, estimated blood loss (EBL), duration of Halo vest immobilization, postoperative follow-up period, and intra- and perioperative complications were examined.Results: The operation time was 257.9 ± 55.6 minutes, and the EBL was 101.6 ± 77.9 mL. Complications related to the operation occurred in 6 patients (30.0%). They included 1 major complication (5.0%): hydrocephalus at 3 months postoperatively, possibly related to an intraoperative dural tear. Other surgery-related complications included 3 cases of superficial infections, 1 case of bone graft donor site deep infection, 1 case of C2 pedicle fracture, 1 case of Halo ring dislocation, 1 case of pseudoarthrosis that required revision surgery, and 1 case of temporary neurological deficit after Halo removal at 2 months postoperatively. Complications unrelated to the operation included 2 cases of respiratory infections and 1 case of implant loosening due to a fall at 9 months postoperatively.Conclusion: The complication rate of upper cervical fusion in patients with Down syndrome remained high; however, major complications decreased substantially. Improved intra- and perioperative management facilitates successful surgical intervention for upper cervical instability in pediatric patients with Down syndrome.The Korean Spinal Neurosurgery Society, Dec. 2021, Neurospine, 18(4) (4), 778 - 785, English, International magazineScientific journal
- The retro-odontoid pseudotumor is often concurrent with atlantoaxial subluxation (AAS). Therefore, the pseudotumor is relatively common in rheumatoid arthritis (RA) but rare in primary osteoarthritis (OA). This is a case report of an elderly male patient suffering from neck pain and compression myelopathy caused by the craniocervical pseudotumor with OA but without atlantoaxial instability. He had long-lasting peripheral and spinal pain treated by nonsteroidal anti-inflammatory drugs. Imaging found upper cervical spondylosis without AAS or dynamic instability but with periodontoid calcifications and ossifications, suggesting calcium pyrophosphate dihydrate (CPPD) crystal deposition. Based on a comprehensive literature search and review, CPPD disease around the atlantodental joint is a possible contributor to secondary OA development and retro-odontoid pannus formation through chronic inflammation, which can be enough severe to induce compression myelopathy in non-RA patients without AAS. The global increase in the aged population advises caution regarding more prevalent upper cervical spine disorders associated with OA and CPPD.Dec. 2021, Neurospine, 18(4) (4), 903 - 913, English, International magazine[Refereed]Scientific journal
- (株)医学書院, Oct. 2021, 臨床整形外科, 56(10) (10), 1231 - 1237, JapaneseMultidisciplinary Treatment for Spinal Metastases
- THE CENTRAL JAPAN ASSOCIATION OF ORTHOPAEDIC SURGERY AND TRAUMATOLOGY, Sep. 2021, The Central Japan Journal of Orthopaedic Surgery & Traumatology, 64(5) (5), 615 - 616, Japanese
- It is our pleasure to announce the publication of the Special Issue "Regeneration for Spinal Diseases" in the International Journal of Molecular Sciences (IJMS, ISSN 1422-0067) [...].Aug. 2021, International journal of molecular sciences, 22(16) (16), English, International magazineScientific journal
- Aug. 2021, 医学のあゆみ, 27(1) (1), 4 - 9, JapaneseMechanisms, current treatment recommendations, and future therapeutic strategies of chronic low back pain[Invited]
- BACKGROUND: Few studies have addressed the impact of palliative surgery for cervical spine metastasis on patients' performance status (PS) and quality of life (QOL). We investigated the surgical outcomes of patients with cervical spine metastasis and the risk factors for a poor outcome with a focus on the PS and QOL. METHODS: We prospectively analyzed patients with cervical spine metastasis who underwent palliative surgery from 2013 to 2018. The Eastern Cooperative Oncology Group PS (ECOGPS) and EuroQol 5-Dimension (EQ5D) score were assessed at study enrollment and 1, 3, and 6 months postoperatively. Neurological function was evaluated with Frankel grading. Univariate and multivariate analyses were performed to identify the risk factors for a poor surgical outcome, defined as no improvement or deterioration after improvement of the ECOGPS or EQ5D score within 3 months. RESULTS: Forty-six patients (mean age, 67.5 ± 11.7 years) were enrolled. Twelve postoperative complications occurred in 11 (23.9%) patients. The median ECOGPS improved from PS3 at study enrolment to PS2 at 1 month and PS1 at 3 and 6 months postoperatively. The mean EQ5D score improved from 0.085 ± 0.487 at study enrolment to 0.658 ± 0.356 at 1 month and 0.753 ± 0.312 at 3 months. A poor outcome was observed in 18 (39.1%) patients. The univariate analysis showed that variables with a P value of < 0.10 were sex (male), the revised Tokuhashi score, the new Katagiri score, the level of the main lesion, and the Frankel grade at baseline. The multivariate analysis identified the level of the main lesion (cervicothoracic junction) as the significant risk factor (odds ratio, 5.00; P = 0.025). CONCLUSIONS: Palliative surgery for cervical spine metastasis improved the PS and QOL, but a cervicothoracic junction lesion could be a risk factor for a poor outcome.Jul. 2021, Journal of orthopaedic surgery and research, 16(1) (1), 423 - 423, English, International magazineScientific journal
- INTRODUCTION: Corrective surgery for spinal deformity associated with osteogenesis imperfecta (OI) is challenging due to the severe and rigid deformity combined with extreme bone fragility. However, surgical outcomes still remain unclear. In addition, the applicability of pedicle screws (PSs) to the tiny and fragile vertebrae in patients with OI is poorly understood. This study evaluated the surgical outcome, and the accuracy and safety of PS placement in patients with OI. METHODS: Twenty-five patients with OI were included in this study. Mean age was 21.0±9.3 (10 to 49) years. Mean follow-up was 5.8±2.0 years. The Sillence classification showed 16 patients had the mildest type I, 1 patient had moderate type IV, and 8 patients had the most severe type III. Fifteen patients underwent anterior release followed by posterior fusion, and 10 patients underwent only posterior fusion. The accuracy of PS placement was evaluated with postoperative computed tomography. RESULTS: Scoliosis was corrected from 95.6 to 65.8 degrees after surgery (correction rate 32.5%) and 68.1 degrees at final follow-up (both, P<0.01). Space available for the lung was improved from 76.3% to 84.9% (P<0.05). No implant dislodgement occurred after surgery. A total of 290 screws were placed, of which 213 screws (73.4%) were placed completely. However, 30 screws (10.3%) penetrated >2 mm. In particular, rates of >2 mm penetration was much higher in type III than type I and IV (27.8% vs. 3.0%; P<0.01). Complications related to spinal surgery included 2 transient neurological disturbances. CONCLUSIONS: PSs were applicable to spinal fusion surgery in patients with OI. However special care should be taken in placing PSs because of the weakness of the pedicle cortex, which was easily penetrated especially in Sillence type III. LEVEL OF EVIDENCE: Level IV.Jul. 2021, Journal of pediatric orthopedics, 41(6) (6), 368 - 373, English, International magazineScientific journal
- (公社)日本整形外科学会, Jun. 2021, 日本整形外科学会雑誌, 95(6) (6), S1240 - S1240, Japaneseがんロコモの現状と課題 脊椎転移に対する集学的治療の効果と限界
- Jun. 2021, Journal of Spine Research (Web), 12(6) (6), 898 - 902, JapaneseCompression myelopathy caused by the screw deviation into the spinal canal as a proximal junctional failure after thoracolumbar spinal fusion; A case report[Refereed]
- Background: The rabbit lumbar spine is a commonly utilized model for studying intervertebral disc degeneration and for the pre-clinical evaluation of regenerative therapies. Histopathology is the foundation for which alterations to disc morphology and cellularity with degeneration, or following repair or treatment are assessed. Despite this, no standardized histology grading scale has yet been established for the spine field for any of the frequently utilized animal models. Aims: The purpose of this study was to establish a new standardized scoring system to assess disc degeneration and regeneration in the rabbit model. Materials and Methods: The scoring system was formulated following a review of the literature and a survey of spine researchers. Validation of the scoring system was carried out using images provided by 4 independent laboratories, which were graded by 12 independent graders of varying experience levels. Reliability testing was performed via the computation of intra-class correlation coefficients (ICC) for each category and the total score. The scoring system was then further refined based on the results of the ICC analysis and discussions amongst the authors. Results: The final general scoring system involves scoring 7 features (nucleus pulposus shape, area, cellularity and matrix condensation, annulus fibrosus/nucleus pulposus border appearance, annulus fibrosus morphology, and endplate sclerosis/thickening) on a 0 (healthy) to 2 (severe degeneration) scale. ICCs demonstrated overall moderate to good agreement across graders. An addendum to the main scoring system is also included for use in studies evaluating regenerative therapeutics, which involves scoring cell cloning and morphology within the nucleus pulposus and inner annulus fibrosus. Discussion: Overall, this new scoring system provides an avenue to improve standardization, allow a more accurate comparison between labs and more robust evaluation of pathophysiology and regenerative treatments across the field. Conclusion: This study developed a histopathology scoring system for degeneration and regeneration in the rabbit model based on reported practice in the literature, a survey of spine researchers, and validation testing.Jun. 2021, JOR spine, 4(2) (2), e1147, English, International magazineScientific journal
- Background: Rats are a widely accepted preclinical model for evaluating intervertebral disc (IVD) degeneration and regeneration. IVD morphology is commonly assessed using histology, which forms the foundation for quantifying the state of IVD degeneration. IVD degeneration severity is evaluated using different grading systems that focus on distinct degenerative features. A standard grading system would facilitate more accurate comparison across laboratories and more robust comparisons of different models and interventions. Aims: This study aimed to develop a histology grading system to quantify IVD degeneration for different rat models. Materials & Methods: This study involved a literature review, a survey of experts in the field, and a validation study using 25 slides that were scored by 15 graders from different international institutes to determine inter- and intra-rater reliability. Results: A new IVD degeneration grading system was established and it consists of eight significant degenerative features, including nucleus pulposus (NP) shape, NP area, NP cell number, NP cell morphology, annulus fibrosus (AF) lamellar organization, AF tears/fissures/disruptions, NP-AF border appearance, as well as endplate disruptions/microfractures and osteophyte/ossification. The validation study indicated this system was easily adopted, and able to discern different severities of degenerative changes from different rat IVD degeneration models with high reproducibility for both experienced and inexperienced graders. In addition, a widely-accepted protocol for histological preparation of rat IVD samples based on the survey findings include paraffin embedding, sagittal orientation, section thickness < 10 μm, and staining using H&E and/or SO/FG to facilitate comparison across laboratories. Conclusion: The proposed histological preparation protocol and grading system provide a platform for more precise comparisons and more robust evaluation of rat IVD degeneration models and interventions across laboratories.Jun. 2021, JOR spine, 4(2) (2), e1150, English, International magazineScientific journal
- The intervertebral disc is the largest avascular low-nutrient organ in the body. Thus, resident cells may utilize autophagy, a stress-response survival mechanism, by self-digesting and recycling damaged components. Our objective was to elucidate the involvement of autophagy in rat experimental disc degeneration. In vitro, the comparison between human and rat disc nucleus pulposus (NP) and annulus fibrosus (AF) cells found increased autophagic flux under serum deprivation rather in humans than in rats and in NP cells than in AF cells of rats (n = 6). In vivo, time-course Western blotting showed more distinct basal autophagy in rat tail disc NP tissues than in AF tissues; however, both decreased under sustained static compression (n = 24). Then, immunohistochemistry displayed abundant autophagy-related protein expression in large vacuolated disc NP notochordal cells of sham rats. Under temporary static compression (n = 18), multi-color immunofluorescence further identified rapidly decreased brachyury-positive notochordal cells with robust expression of autophagic microtubule-associated protein 1 light chain 3 (LC3) and transiently increased brachyury-negative non-notochordal cells with weaker LC3 expression. Notably, terminal deoxynucleotidyl transferase dUTP nick end labeling-positive apoptotic death was predominant in brachyury-negative non-notochordal cells. Based on the observed notochordal cell autophagy impairment and non-notochordal cell apoptosis induction under unphysiological mechanical loading, further investigation is warranted to clarify possible autophagy-induced protection against notochordal cell disappearance, the earliest sign of disc degeneration, through limiting apoptosis.May 2021, International journal of molecular sciences, 22(11) (11), English, International magazineScientific journal
- The intervertebral disc is the largest avascular organ. Autophagy is an important cell survival mechanism by self-digestion and recycling damaged components under stress, primarily nutrient deprivation. Resident cells would utilize autophagy to cope with the harsh disc environment. Our objective was to elucidate the roles of human disc cellular autophagy. In human disc cells, serum deprivation and pro-inflammatory interleukin-1β (IL-1β) stimulation increased autophagy marker microtubule-associated protein 1 light chain 3 (LC3)-II and decreased autophagy substrate p62/sequestosome 1 (p62/SQSTM1), indicating enhanced autophagy. Then, RNA interference (RNAi) of autophagy-related gene 5 (ATG5), essential for autophagy, showed decreases in ATG5 protein (26.8%-27.4%, p < 0.0001), which suppressed early-stage autophagy with decreased LC3-II and increased p62/SQSTM1. Cell viability was maintained by ATG5 RNAi in serum-supplemented media (95.5%, p = 0.28) but reduced in serum-free media (80.4%, p = 0.0013) with IL-1β (69.9%, p = 0.0008). Moreover, ATG5 RNAi accelerated IL-1β-induced changes in apoptosis and senescence. Meanwhile, ATG5 RNAi unaffected IL-1β-induced catabolic matrix metalloproteinase release, down-regulated anabolic gene expression, and mitogen-activated protein kinase pathway activation. Lysosomotropic chloroquine supplementation presented late-stage autophagy inhibition with apoptosis and senescence induction, while catabolic enzyme production was modest. Disc-tissue analysis detected age-related changes in ATG5, LC3-II, and p62/SQSTM1. In summary, autophagy protects against human disc cellular apoptosis and senescence rather than extracellular matrix catabolism.Apr. 2021, International journal of molecular sciences, 22(8) (8), English, International magazineScientific journal
- Management of bone metastasis is becoming increasingly important. Thus, local and systemic treatment options have been developed for control. Although systemic administration of anticancer agents is effective for bone metastasis, it is often stopped because of poor general conditions or side effects. Therefore, it is highly desirable to develop a more effective and safer local treatment for bone metastasis. The purpose of the current study was to investigate the antitumor effects and safety of gelatin hydrogel microspheres incorporating cisplatin (GM-CDDP), which we developed as a sustained release system without harmful substances. First, we assessed GM-CDDP for its in vitro degradability and potential for sustained release. Second, in vivo antitumor and side effects were evaluated using a murine bone metastasis model of MDA-MB-231 human breast cancer cells incorporating GFP. In vitro, initial bursts were observed within 2 h and CDDP was released gradually with gelatin hydrogel degradation, which reached 100% at 48 h. In vivo, local administration of GM-CDDP (2 mg/kg) significantly suppressed tumor growth and bone osteolysis compared with the control, and local and systemic administration of free CDDP (2 mg/kg; p < 0.05). Local administration of GM-CDDP significantly reduced loss of body weight and elevation of blood urea nitrogen compared with the systemic administration of free CDDP (p < .05). The current study suggests that local administration of GM-CDDP achieves higher antitumor effects with a potential for lesser side effects compared with local or systemic administration of free CDDP.Mar. 2021, Journal of orthopaedic research : official publication of the Orthopaedic Research Society, 39(3) (3), 525 - 535, English, International magazine[Refereed]Scientific journal
- AIMS: With recent progress in cancer treatment, the number of advanced-age patients with spinal metastases has been increasing. It is important to clarify the influence of advanced age on outcomes following surgery for spinal metastases, especially with a focus on subjective health state values. METHODS: We prospectively analyzed 101 patients with spinal metastases who underwent palliative surgery from 2013 to 2016. These patients were divided into two groups based on age (< 70 years and ≥ 70 years). The Eastern Cooperative Oncology Group (ECOG) performance status (PS), Barthel index (BI), and EuroQol-5 dimension (EQ-5D) score were assessed at study enrolment and at one, three, and six months after surgery. The survival times and complications were also collected. RESULTS: In total, 65 patients were aged < 70 years (mean 59.6 years; 32 to 69) and 36 patients were aged ≥ 70 years (mean 75.9 years; 70 to 90). In both groups, the PS improved from PS3 to PS1 by spine surgery, the mean BI improved from < 60 to > 80 points, and the mean EQ-5D score improved from 0.0 to > 0.7 points. However, no significant differences were found in the improvement rates and values of the PS, BI, and EQ-5D score at any time points between the two groups. The PS, BI, and EQ-5D score improved throughout the follow-up period in approximately 90% of patients in each group. However, the improved PS, BI, and EQ-5D scores subsequently deteriorated in some patients, and the redeterioration rate of the EQ-5D was significantly higher in patients aged ≥ 70 than < 70 years (p = 0.027). CONCLUSION: Palliative surgery for spinal metastases improved the PS, activities of daily living, and quality of life, regardless of age. However, clinicians should be aware of the higher risk of redeterioration of the quality of life in advanced-age patients. Cite this article: Bone Joint J 2020;102-B(12):1709-1716.Dec. 2020, The bone & joint journal, 102-B(12) (12), 1709 - 1716, English, International magazine[Refereed]Scientific journal
- The loss of nucleus pulposus (NP) notochordal cells is one of the key initial hallmarks of age-related intervertebral disc degeneration. Although the transmembrane mechanoreceptor integrin α5β1 is important in the process of disc degeneration, the relationship between integrin α5β1 and notochordal cell disappearance remains unclear. The purpose of this study was to elucidate the role of integrin α5β1 in the homeostasis of notochordal cells using an ex-vivo dynamic loading culture system that we developed. Rat tail functional spinal units (n = 80 from 40 rats) were cultured under unloading or 1.3-MPa, 1.0-Hz dynamic compressive loading for 48 or 144 h with or without an integrin α5β1 inhibitor. Disc histomorphology, cell viability, apoptosis, senescence, and phenotypic expression were investigated. Consequently, histological degenerative disc changes with decreased cell viability and increased cell apoptosis and senescence were observed with an extended loading duration. Immunofluorescence revealed that the expression of notochordal cell markers, CD24 and brachyury, and chondrocyte markers, collagen type II and SRY-box 9, declined with loading. In particular, reduction in notochordal cell marker expression was more dramatic than that in chondrocyte marker expression. Apoptotic terminal deoxynucleotidyl transferase dUTP nick-end labeling positivity was also higher in brachyury-positive notochordal cells. Furthermore, all these changes were delayed by inhibiting integrin α5β1. Findings of our dynamic loading regimen with a relatively high pressure suggest reproducibility of the cellularity and phenotypic disappearance of NP notochordal cells during adolescence, the susceptibility of notochordal cells to mechanical stimuli partially through the integrin α5β1 pathway, and future potential treatment of integrin regulation for intervertebral disc disease.Oct. 2020, Journal of orthopaedic research : official publication of the Orthopaedic Research Society, 39(9) (9), 1933 - 1944, English, International magazine[Refereed]Scientific journal
- (一社)中部日本整形外科災害外科学会, Oct. 2020, 中部日本整形外科災害外科学会雑誌, 63(秋季学会) (秋季学会), 15 - 15, Japanese転移性骨腫瘍の治療戦略 脊椎転移手術の術後創離開に関する傾向と対策
- BACKGROUND: Vertebroplasty with posterior spinal fusion (VP + PSF) is one of the most widely accepted surgical techniques for treating osteoporotic vertebral collapse (OVC). Nevertheless, the effect of the extent of fusion on surgical outcomes remains to be established. This study aimed to evaluate the surgical outcomes of short- versus long-segment VP + PSF for OVC with neurological impairment in thoracolumbar spine. METHODS: We retrospectively collected data from 133 patients (median age, 77 years; 42 men and 91 women) from 27 university hospitals and their affiliated hospitals. We divided patients into two groups: a short-segment fusion group (S group) with 2- or 3-segment fusion (87 patients) and a long-segment fusion group (L group) with 4- through 6-segment fusion (46 patients). Surgical invasion, clinical outcomes, local kyphosis angle (LKA), and complications were evaluated. RESULTS: No significant differences between the two groups were observed in terms of neurological recovery, pain scale scores, and complications. Surgical time was shorter and blood loss was less in the S group, whereas LKA at the final follow-up and correction loss were superior in the L group. CONCLUSION: Although less invasiveness and validity of pain and neurological relief are secured by short-segment VP + PSF, surgeons should be cautious regarding correction loss.Aug. 2020, BMC musculoskeletal disorders, 21(1) (1), 513 - 513, English, International magazine[Refereed]Scientific journal
- (公社)日本整形外科学会, Jul. 2020, 日本整形外科学会雑誌, 94(6) (6), S1528 - S1528, Japanese脊椎腫瘍に対するseparation surgeryとIMRTの併用による治療成績 7例のケースシリーズ
- (公社)日本リハビリテーション医学会, Jul. 2020, The Japanese Journal of Rehabilitation Medicine, 57(特別号) (特別号), 3 - 2, Japanese頸椎転移患者の手術成績と成績不良因子の検討 PS、QOLの推移から
- Jul. 2020, Bone Joint Nerve, 10(3) (3)The therapeutic strategy for spinal cord compression[Refereed]
- BACKGROUND: The optimal treatment of osteoporosis after reconstruction surgery for osteoporotic vertebral fractures (OVF) remains unclear. In this multicentre retrospective study, we investigated the effects of typically used agents for osteoporosis, namely, bisphosphonates (BP) and teriparatide (TP), on surgical results in patients with osteoporotic vertebral fractures. METHODS: Retrospectively registered data were collected from 27 universities and affiliated hospitals in Japan. We compared the effects of BP vs TP on postoperative mechanical complication rates, implant-related reoperation rates, and clinical outcomes in patients who underwent posterior instrumented fusion for OVF. Data were analysed according to whether the osteoporosis was primary or glucocorticoid-induced. RESULTS: A total of 159 patients who underwent posterior instrumented fusion for OVF were included. The overall mechanical complication rate was significantly lower in the TP group than in the BP group (BP vs TP: 73.1% vs 58.2%, p = 0.045). The screw backout rate was significantly lower and the rates of new vertebral fractures and pseudoarthrosis tended to be lower in the TP group than in the BP group. However, there were no significant differences in lumbar functional scores and visual analogue scale pain scores or in implant-related reoperation rates between the two groups. The incidence of pseudoarthrosis was significantly higher in patients with glucocorticoid-induced osteoporosis (GIOP) than in those with primary osteoporosis; however, the pseudoarthrosis rate was reduced by using TP. The use of TP also tended to reduce the overall mechanical complication rate in both primary osteoporosis and GIOP. CONCLUSIONS: The overall mechanical complication rate was lower in patients who received TP than in those who received a BP postoperatively, regardless of type of osteoporosis. The incidence of pseudoarthrosis was significantly higher in patients with GIOP, but the use of TP reduced the rate of pseudoarthrosis in GIOP patients. The use of TP was effective to reduce postoperative complications for OVF patients treated with posterior fusion.Jul. 2020, BMC musculoskeletal disorders, 21(1) (1), 420 - 420, English, International magazine[Refereed]Scientific journal
- PURPOSE: Osteoporotic vertebral fracture (OVF) with nonunion or neurological deficit may be a candidate for surgical treatment. However, some patients do not show improvement as expected. Therefore, we conducted a nationwide multicenter study to determine the predictors for postoperative poor activity of daily living (ADL) in patients with OVF. METHODS: We retrospectively reviewed the case histories of 309 patients with OVF who underwent surgery. To determine the factors predicting postoperative poor ADL, uni- and multivariate statistical analyses were performed. RESULTS: The frequency of poor ADL at final follow-up period was 9.1%. In univariate analysis, preoperative neurological deficit (OR, 4.1; 95% CI, 1.8-10.3; P < 0.001), perioperative complication (OR, 3.4; P = 0.006), absence of preoperative bone-modifying agent (BMA) administration (OR, 2.7; P = 0.03), and absence of postoperative recombinant human parathyroid hormone (rPTH) administration (OR, 3.9; P = 0.006) were significantly associated. In multivariate analysis, preoperative neurological deficit (OR, 4.6; P < 0.001), perioperative complication (OR, 3.4; P = 0.01), and absence of postoperative rPTH administration (OR, 3.9; P = 0.02) showed statistical significance. CONCLUSIONS: Preoperative neurological deficit, perioperative complication, and absence of postoperative rPTH administration were considered as predictors for postoperative poor ADL in patients with OVF. Neurological deficits and complications are often inevitable factors; therefore, rPTH is an important option for postoperative treatment for OVF. These slides can be retrieved under Electronic Supplementary Material.Jul. 2020, European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 29(7) (7), 1597 - 1605, English, International magazine[Refereed]Scientific journal
- (一社)中部日本整形外科災害外科学会, Apr. 2020, 中部日本整形外科災害外科学会雑誌, 63(春季学会) (春季学会), 81 - 81, Japanese頸椎転移に対する後方手術成績と術後成績不良因子の検討
- STUDY DESIGN: Retrospective case series. OBJECTIVE: To elucidate the postoperative course of sagittal alignment in patients with congenital thoracolumbar to lumbar kyphosis or kyphoscoliosis. Acquisition of acceptable sagittal alignment is essential to treat spinal deformity. Little evidence exists regarding long-term surgical outcomes on sagittal alignment in congenital kyphosis or kyphoscoliosis. METHODS: Sixteen consecutive patients (mean age 10.5 ± 3.5 years) with congenital kyphosis or kyphoscoliosis who underwent vertebra resection and osteotomy with instrumentation by single posterior or combined anterior and posterior approach were included. Preoperative radiographs identified kyphosis in 3 patients and kyphoscoliosis in 13 patients. All patients had clinical and radiologic follow-up for > 10 years (mean 16.3 ± 4.0 years). RESULTS: Segmental kyphosis was significantly improved from 33.9° ± 20.1° to 14.9° ± 17.6° by surgery and was finally maintained at 16.8° ± 22.2° and sagittal vertical axis (SVA) of 13.1 ± 33.7 mm at preoperation and 18.3 ± 22.1 mm at postoperation significantly increased to 26.8 ± 45.7 mm during follow-up. Of the 16 patients, 5 (31%) were identified as those with SVA > 40 mm, and SVA increases > 30 mm during follow-up. In patients with sagittal malalignment, radiographs demonstrated decreased lumbar lordosis at the lower foundation from 28.8° ± 39.0° to 17.0° ± 17.6°, significant increased pelvic tilt from 25.8° ± 5.4° to 37.4° ± 7.4° during follow-up (p < 0.05), and larger residual segmental kyphosis than those in the 11 patients without sagittal malalignment with statistical significance. Of the five cases, progression of local kyphosis (one case) and sagittal decompensation, including decreased lumbar lordosis with disc degeneration (four cases), increased pelvic tilt (three cases), or proximal junctional kyphosis (two cases), were observed. CONCLUSION: Based on this > 10-year follow-up study, residual kyphosis and sagittal decompensation are revealed to be risk factors for postoperative sagittal malalignment in patients with congenital thoracolumbar to lumbar kyphosis or kyphoscoliosis. LEVEL OF EVIDENCE: Level IV, case series.Apr. 2020, Spine deformity, 8(2) (2), 245 - 256, English, International magazine[Refereed]Scientific journal
- (公社)日本整形外科学会, Mar. 2020, 日本整形外科学会雑誌, 94(3) (3), S1096 - S1096, Japanese頸椎転移の手術成績と成績不良因子の検討
- (一社)日本脊椎脊髄病学会, Mar. 2020, Journal of Spine Research, 11(3) (3), 221 - 221, Japanese転移性頸椎腫瘍に対する後方手術成績と術後成績不良因子の検討
- (一社)日本脊椎脊髄病学会, Mar. 2020, Journal of Spine Research, 11(3) (3), 73 - 73, Japanese慢性腰痛症に対する薬物療法の合併症評価 肝腎機能障害を中心に 日本脊椎脊髄病学会主導多施設前向き追跡調査
- Laminoplasty using hydroxyapatite (HA) spacers is widely performed in patients with cervical myelopathy. However, spacer dislocation is a critical complication caused by bone absorption and inadequate bone conductivity, and can result in dural damage and restenosis. We thus designed a prospective cohort study to clarify the feasibility of increased porosity HA spacers for double-door laminoplasty by analyzing computed tomography (CT) images. Forty-seven patients underwent cervical laminoplasty. Two different types of CERATITE HA spacer were used, either high porosity (50%) or low porosity (35%). These HA spacers were placed in an alternating manner into the laminae in each patient. In total, 85 high-porosity (50%) HA spacers and 84 low-porosity (35%) HA spacers were implanted. At postoperative 2 weeks, 3 months, 6 months, and 1 year, CT images were obtained. In both groups, the percentage of bone-bonding boundary area of the HA spacer in contact with laminae and bone volume of the spinous process relative to the 2-week value were calculated by a 3D and 2D CT-image pixel analysis. The bone-bonding ratio was significantly higher in high-porosity (50%) than low-porosity (35%) HA spacers at 3 months and thereafter (1 year, 69.3 ± 27.8% and 49.7 ± 32.9% respectively, P < .01). The bone volume in both groups significantly decreased with time (1 year, 73.2 ± 29.8% and 69.0 ± 30.4% respectively, P < .01), indicating bone absorption. This showed no significant difference between the HA spacers (P = .15) but was higher in high-porosity (50%) than low-porosity (35%) HA spacers throughout the study period. Meanwhile, spacer breakage was found in 4.7% of high-porosity (50%) HA spacers and 1.2% of low-porosity (35%) HA spacers (P = .37). In summary, high-porosity (50%) HA spacers have the advantages of accelerated bone bonding and relatively decelerated bone absorption compared to low-porosity (35%) HA spacers; however, possibly more frequent breakage of HA spacers with a high porosity (50%) requires careful, extended postoperative follow-up.Mar. 2020, JOR spine, 3(1) (1), e1080, English, International magazine[Refereed]Scientific journal
- Degenerative disc disease is a highly prevalent, global health problem that represents the primary cause of back pain and is associated with neurological disorders, including radiculopathy, myelopathy, and paralysis, resulting in worker disability and socioeconomic burdens. The intervertebral disc is the largest avascular organ in the body, and degeneration is suspected to be linked to nutritional deficiencies. Autophagy, the process through which cells self-digest and recycle damaged components, is an important cell survival mechanism under stress conditions, especially nutrient deprivation. Autophagy is negatively controlled by the mammalian target of rapamycin (mTOR) signaling pathway. mTOR is a serine/threonine kinase that detects nutrient availability to trigger the activation of cell growth and protein synthesis pathways. Thus, resident disc cells may utilize autophagy and mTOR signaling to cope with harsh low-nutrient conditions, such as low glucose, low oxygen, and low pH. We performed rabbit and human disc cell and tissue studies to elucidate the involvement and roles played by autophagy and mTOR signaling in the intervertebral disc. In vitro serum and nutrient deprivation studies resulted in decreased disc cell proliferation and metabolic activity and increased apoptosis and senescence, in addition to increased autophagy. The selective RNA interference-mediated and pharmacological inhibition of mTOR complex 1 (mTORC1) was protective against inflammation-induced disc cellular apoptosis, senescence, and extracellular matrix catabolism, through the induction of autophagy and the activation of the Akt-signaling network. Although temsirolimus, a rapamycin derivative with improved water solubility, was the most effective mTORC1 inhibitor tested, dual mTOR inhibitors, capable of blocking multiple mTOR complexes, did not rescue disc cells. In vivo, high levels of mTOR-signaling molecule expression and phosphorylation were observed in human intermediately degenerated discs and decreased with age. A mechanistic understanding of autophagy and mTOR signaling can provide a basis for the development of biological therapies to treat degenerative disc disease.Mar. 2020, JOR spine, 3(1) (1), e1082, English, International magazine[Refereed]Scientific journal
- Intervertebral disc degeneration is the primary cause of back pain and associated with neurological disorders including radiculopathy, myelopathy, and paralysis. The currently available surgical treatments predominantly include the excision of pathological discs, resulting in the function loss, immobilization, and potential additional complications due to the altered biomechanics. Gene therapy approach involves gene transfer into cells, affects RNA and protein synthesis of the encoded genes in the recipient cells, and facilitates biological treatment. Relatively long-exerting therapeutic effects by gene therapy are potentially advantageous to treat slow progressive degenerative disc disease. In gene therapy, the delivery method and selection of target gene(s) are essential. Although gene therapy was first mediated by viral vectors, technological progress has enabled to apply nonviral vectors and polyplex micelles for the disc. While RNA interference successfully provides specific downregulation of multiple genes in the disc, clustered regularly interspaced short palindromic repeats (CRISPR) system has increased attention to alter the process of intervertebral disc degeneration. Then, more recent findings of our studies have suggested autophagy, the intracellular self-digestion, and recycling system under the negative regulation by the mammalian target of rapamycin (mTOR), as a gene therapy target in the disc. Here we briefly review backgrounds and applications of gene therapy for the disc, introducing strategies of autophagy and mTOR signaling modulation through selective RNA interference.Mar. 2020, Neurospine, 17(1) (1), 3 - 14, English, International magazine[Refereed]Scientific journal
- Back pain is a global health problem with a high morbidity and socioeconomic burden. Intervertebral disc herniation and degeneration are its primary cause, further associated with neurological radiculopathy, myelopathy, and paralysis. The current surgical treatment is principally discectomy, resulting in the loss of spinal movement and shock absorption. Therefore, the development of disc regenerative therapies is essential. Here we show reduced disc damage by a new collagen type I-based scaffold through actinidain hydrolysis-Low Adhesive Scaffold Collagen (LASCol)-with a high 3D spheroid-forming capability, water-solubility, and biodegradability and low antigenicity. In human disc nucleus pulposus and annulus fibrosus cells surgically obtained, time-dependent spheroid formation with increased expression of phenotypic markers and matrix components was observed on LASCol but not atelocollagen (AC). In a rat tail nucleotomy model, LASCol-injected and AC-injected discs presented relatively similar radiographic and MRI damage control; however, LASCol, distinct from AC, decelerated histological disc disruption, showing collagen type I-comprising LASCol degradation, aggrecan-positive and collagen type II-positive endogenous cell migration, and M1-polarized and also M2-polarized macrophage infiltration. Reduced nucleotomy-induced disc disruption through spontaneous spheroid formation by LASCol warrants further investigations of whether it may be an effective treatment without stem cells and/or growth factors for intervertebral disc disease.Mar. 2020, Biomaterials, 235, 119781 - 119781, English, International magazine[Refereed]Scientific journal
- Introduction: Osteoporotic vertebral fracture (OVF) is the most common osteoporotic fracture, and some patients require surgical intervention to improve their impaired activities of daily living with neurological deficits. However, many previous reports have focused on OVF around the thoracolumbar junction, and the surgical outcomes of lumbar OVF have not been thoroughly discussed. We aimed to investigate the surgical outcomes for lumbar OVF with a neurological deficit. Methods: Patients who underwent fusion surgery for thoracolumbar OVF with a neurological deficit were enrolled at 28 institutions. Clinical information, comorbidities, perioperative complications, Japanese Orthopaedic Association scores, visual analog scale scores, and radiographic parameters were compared between patients with lower lumbar fracture (L3-5) and those with thoracolumbar junction fracture (T10-L2). Each patient with lower lumbar fracture (L group) was matched with to patients with thoracolumbar junction fracture (T group). Results: A total 403 patients (89 males and 314 females, mean age: 73.8 ± 7.8 years, mean follow-up: 3.9 ± 1.7 years) were included in this study. Lower lumbar OVF was frequently found in patients with lower bone mineral density. After matching, mechanical failure was more frequent in the L group (L group: 64%, T group: 39%; p < 0.001). There was no difference between groups in the clinical and radiographical outcomes, although the rates of complication and revision surgery were still high in both groups. Conclusions: The surgical intervention for OVF is effective in patients with myelopathy or radiculopathy regardless of the surgical level, although further study is required to improve clinical and radiographical outcomes. Level of evidence: Level III.2020, Spine surgery and related research, 4(3) (3), 199 - 207, English, Domestic magazineScientific journal
- INTRODUCTION: The prevalence of patients with osteoporosis continues to increase in aging societies, including Japan. The first choice for managing osteoporotic vertebral compression fracture (OVF) is conservative treatment. Failure in conservative treatment for OVF may lead to non-union or vertebral collapse, resulting in neurological deficit and subsequently requiring surgical intervention. This multicenter nationwide study in Japan was conducted to comprehensively understand the outcomes of surgical treatments for OVF non-union. METHODS: This multicenter, retrospective study included 403 patients (89 males, 314 females, mean age 73.8 ± 7.8 years, mean follow-up 3.9 ± 1.7 years) with neurological deficit due to vertebral collapse or non-union after OVF at T10-L5 who underwent fusion surgery with a minimum 1-year follow-up. Radiological and clinical outcomes at baseline and at the final follow-up (FU) were evaluated. RESULTS: OVF was present at a thoracolumbar junction such as T12 (124 patients) and L1 (117 patients). A majority of OVF occurred after a minor trauma, such as falling down (55.3%) or lifting objects (8.4%). Short segment fusion, including affected vertebra, was conducted (mean 4.0 ± 2.0 vertebrae) with 256.8 minutes of surgery and 676.1 g of blood loss. A posterior approach was employed in 86.6% of the patients, followed by a combined anterior and posterior (8.7%), and an anterior (4.7%) approach. Perioperative complications and implant failures were observed in 18.1% and 41.2%, respectively. VAS scores of low back pain (74.7 to 30.8 mm) and leg pain (56.8 to 20.7 mm) improved significantly at FU. Preoperatively, 52.6% of the patients were unable to walk and the rate of non-ambulatory patients decreased to 7.5% at FU. CONCLUSIONS: This study demonstrated that substantial improvement in activity of daily living (ADL) was achieved by fusion surgery. Although there was a considerable rate of complications, fusion surgery is beneficial for elderly OVF patients with non-union.2020, Spine surgery and related research, 4(3) (3), 292 - 293, English, Domestic magazineScientific journal
- BACKGROUND: A consensus on the optimal surgical procedure for thoracolumbar OVF has yet to be reached due to the previous relatively small number of case series. The study was conducted to investigate surgical outcomes for osteoporotic vertebral fracture (OVF) in the thoracolumbar spine. METHODS: In total, 315 OVF patients (mean age, 74 years; 68 men and 247 women) with neurological symptoms who underwent spinal fusion with a minimum 2-year follow-up were included. The patients were divided into 5 groups by procedure: anterior spinal fusion alone (ASF group, n = 19), anterior/posterior combined fusion (APSF group, n = 27), posterior spinal fusion alone (PSF group, n = 40), PSF with 3-column osteotomy (3CO group, n = 92), and PSF with vertebroplasty (VP + PSF group, n = 137). RESULTS: Mean operation time was longer in the APSF group (p < 0.05), and intraoperative blood loss was lower in the VP + PSF group (p < 0.05). The amount of local kyphosis correction was greater in the APSF and 3CO groups (p < 0.05). Clinical outcomes were approximately equivalent among all groups. CONCLUSION: All 5 procedures resulted in acceptable neurological outcomes and functional improvement in walking ability. Moreover, they were similar with regard to complication rates, prevalence of mechanical failure related to the instrumentation, and subsequent vertebral fracture. Individual surgical techniques can be adapted to suit patient condition or severity of OVF.Nov. 2019, Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association, 24(6) (6), 1020 - 1026, English, Domestic magazine[Refereed]Scientific journal
- BACKGROUND: There have been few reports on the incidence and risk factors of the complications after spinal fixation surgery for osteoporotic vertebral collapse (OVC) with neurological deficits. This study aimed to identify the incidence and risk factors of the complications after OVC surgery. METHODS: In this retrospective multicenter study, a total of 403 patients (314 women and 89 men; mean age 73.8 years) who underwent spinal fixation surgery for OVC with neurological deficits between 2005 and 2014 were enrolled. Data on patient demographics were collected, including age, sex, body mass index, smoking, steroid use, medical comorbidities, and surgical procedures. All postoperative complications that occurred within 6 weeks were recorded. Patients were classified into two groups, namely, complication group and no complication group, and risk factors for postoperative complications were investigated by univariate and multivariate analyses. RESULTS: Postoperative complications occurred in 57 patients (14.1%), and the most common complication was delirium (5.7%). In the univariate analysis, the complication group was found to be older (p = 0.039) and predominantly male (p = 0.049), with higher occurrence rate of liver disease (p = 0.001) and Parkinson's disease (p = 0.039) compared with the no-complication group. In the multivariate analysis, the significant independent risk factors were age (p = 0.021; odds ratio [OR] 1.051, 95% confidence interval [CI] 1.007-1.097), liver disease (p < 0.001; OR 8.993, 95% CI 2.882-28.065), and Parkinson's disease (p = 0.009; OR 3.636, 95% CI 1.378-9.599). CONCLUSIONS: Complications after spinal fixation surgery for OVC with neurological deficits occurred in 14.1%. Age, liver disease, and Parkinson's disease were demonstrated to be independent risk factors for postoperative complications.Nov. 2019, Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association, 24(6) (6), 985 - 990, English, Domestic magazine[Refereed]Scientific journal
- Aging-related loss of adult stem cell function contributes to impaired tissue regeneration. Mice deficient in zinc metalloproteinase STE24 (Zmpste24-/-) exhibit premature age-related musculoskeletal pathologies similar to those observed in children with Hutchinson-Gilford progeria syndrome (HGPS). We have reported that muscle-derived stem/progenitor cells (MDSPCs) isolated from Zmpste24-/- mice are defective in their proliferation and differentiation capabilities in culture and during tissue regeneration. The mechanistic target of rapamycin complex 1 (mTORC1) regulates cell growth, and inhibition of the mTORC1 pathway extends the lifespan of several animal species. We therefore hypothesized that inhibition of mTORC1 signaling would rescue the differentiation defects observed in progeroid MDSPCs. MDSPCs were isolated from Zmpste24 -/- mice, and the effects of mTORC1 on MDSPC differentiation and function were examined. We found that mTORC1 signaling was increased in senescent Zmpste24-/- MDSPCs, along with impaired chondrogenic, osteogenic, and myogenic differentiation capacity versus wild-type MDSPCs. Interestingly, we observed that mTORC1 inhibition with rapamycin improved myogenic and chondrogenic differentiation and reduced levels of apoptosis and senescence in Zmpste24-/- MDSPCs. Our results demonstrate that age-related adult stem/progenitor cell dysfunction contributes to impaired regenerative capacities and that mTORC1 inhibition may represent a potential therapeutic strategy for improving differentiation capacities of senescent stem and muscle progenitor cells.Sep. 2019, Molecular therapy. Methods & clinical development, 14, 64 - 76, English, International magazine[Refereed]Scientific journal
- 医学書院, Aug. 2019, 臨床整形外科, 54(8) (8), 777 - 783, JapaneseThe Analysis of Cost-utility of Multidisciplinary Treatment for Spinal Metastasis[Refereed]
- OBJECTIVE: The mammalian target of rapamycin (mTOR) is a serine/threonine kinase that integrates nutrients to execute cell growth. We hypothesized that mTOR is influential in the intervertebral disc-largest avascular, low-nutrient organ. Our objective was to identify the optimal mTOR inhibitor for treating human degenerative disc disease. DESIGN: mTOR complex 1 (mTORC1) regulates p70/ribosomal S6 kinase (p70/S6K), negatively regulates autophagy, and is controlled by Akt. Akt is controlled by phosphatidylinositol 3-kinase (PI3K) and mTOR complex 2 (mTORC2). mTORC1 inhibitors-rapamycin, temsirolimus, everolimus, and curcumin, mTORC1&mTORC2 inhibitor-INK-128, PI3K&mTOR inhibitor-NVP-BEZ235, and Akt inhibitor-MK-2206-were applied to human disc nucleus pulposus (NP) cells. mTOR signaling, autophagy, apoptosis, senescence, and matrix metabolism were evaluated. RESULTS: mTORC1 inhibitors decreased p70/S6K but increased Akt phosphorylation, promoted autophagy with light chain 3 (LC3)-II increases and p62/sequestosome 1 (p62/SQSTM1) decreases, and suppressed pro-inflammatory interleukin-1 beta (IL-1β)-induced apoptotic terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) positivity (versus rapamycin, 95% confidence interval (CI) -0.431 to -0.194; temsirolimus, 95% CI -0.529 to -0.292; everolimus, 95% CI -0.477 to -0.241; curcumin, 95% CI -0.248 to -0.011) and poly (ADP-ribose) polymerase (PARP) and caspase-9 cleavage, senescent senescence-associated beta-galactosidase (SA-β-gal) positivity (versus rapamycin, 95% CI -0.437 to -0.230; temsirolimus, 95% CI -0.534 to -0.327; everolimus, 95% CI -0.485 to -0.278; curcumin, 95% CI -0.210 to -0.003) and p16/INK4A expression, and catabolic matrix metalloproteinase (MMP) release and activation. Meanwhile, dual mTOR inhibitors decreased p70/S6K and Akt phosphorylation without enhanced autophagy and suppressed apoptosis, senescence, and matrix catabolism. MK-2206 counteracted protective effects of temsirolimus. Additional disc-tissue analysis found relevance of mTOR signaling to degeneration grades. CONCLUSION: mTORC1 inhibitors-notably temsirolimus with an improved water solubility-but not dual mTOR inhibitors protect against inflammation-induced apoptosis, senescence, and matrix catabolism in human disc cells, which depends on Akt and autophagy induction.Jun. 2019, Osteoarthritis and cartilage, 27(6) (6), 965 - 976, English, International magazine[Refereed]Scientific journal
- 日本脊椎脊髄病学会, May 2019, Journal of spine research : official journal of the Japanese Society for Spine Surgery and Related Research, 10(5) (5), 898 - 904, JapaneseThe Effectiveness and Limitation of Spine Surgery for Spinal Metastasis[Refereed]
- PURPOSE: The loss of nutrient supply is a suspected contributor of intervertebral disc degeneration. However, the extent to which low nutrition affects disc annulus fibrosus (AF) cells is unknown as nutrient deprivation has mainly been investigated in disc nucleus pulposus cells. Hence, an experimental study was designed to clarify the effects of limited nutrients on disc AF cell fate, including autophagy, the process by which cells recycle their own damaged components. METHODS: Rabbit disc AF cells were cultured in different media with varying serum concentrations under 5% oxygen. Cellular responses to changes in serum and nutrient concentrations were determined by measuring proliferation and metabolic activity. Autophagic flux in AF cells was longitudinally monitored using imaging cytometry and Western blotting for LC3, HMGB1, and p62/SQSTM1. Apoptosis (TUNEL staining and cleaved caspase-3 immunodetection) and cellular senescence (senescence-associated β-galactosidase assay and p16/INK4A immunodetection) were measured. RESULTS: Markers of apoptosis and senescence increased, while cell proliferation and metabolic activity decreased under the withdrawal of serum and of nutrients other than oxygen, confirming cellular stress. Time-dependent increases in autophagy markers, including LC3 puncta number per cell, LC3-II expression, and cytoplasmic HMGB1, were observed under conditions of reduced nutrition, while an autophagy substrate, p62/SQSTM1, decreased over time. Collectively, these findings suggest increased autophagic flux in disc AF cells under serum and nutrient deprivation. CONCLUSION: Disc AF cells exhibit distinct responses to serum and nutrient deprivation. Cellular responses include cell death and quiescence in addition to reduced proliferation and metabolic activity, as well as activation of autophagy under conditions of nutritional stress. These slides can be retrieved under Electronic Supplementary Material.May 2019, European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 28(5) (5), 993 - 1004, English, International magazine[Refereed]Scientific journal
- Introduction: Approximately 3% of osteoporotic vertebral fractures develop osteoporotic vertebral collapse (OVC) with neurological deficits, and such patients are recommended to be treated surgically. However, a proximal junctional fracture (PJFr) following surgery for OVC can be a serious concern. Therefore, the aim of this study is to identify the incidence and risk factors of PJFr following fusion surgery for OVC. Methods: This study retrospectively analyzed registry data collected from facilities belonging to the Japan Association of Spine Surgeons with Ambition (JASA) in 2016. We retrospectively analyzed 403 patients who suffered neurological deficits due to OVC below T10 and underwent corrective surgery; only those followed up for ≥2 years were included. Potential risk factors related to the PJFr and their cut-off values were calculated using multivariate logistic regression analysis and receiver operating characteristic (ROC) analysis. Results: Sixty-three patients (15.6%) suffered PJFr during the follow-up (mean 45.7 months). In multivariate analysis, the grade of osteoporosis (grade 2, 3: adjusted odds ratio (aOR) 2.92; p=0.001) and lower instrumented vertebra (LIV) level (sacrum: aOR 6.75; p=0.003) were independent factors. ROC analysis demonstrated that lumbar bone mineral density (BMD) was a predictive factor (area under curve: 0.72, p=0.035) with optimal cut-off value of 0.61 g/cm2 (sensitivity, 76.5%; specificity, 58.3%), but that of the hip was not (p=0.228). Conclusions: PJFr was found in 16% cases within 4 years after surgery; independent risk factors were severe osteoporosis and extended fusion to the sacrum. The lumbar BMD with cut-off value 0.61 g/cm2 may potentially predict PJFr. Our findings can help surgeons select perioperative adjuvant therapy, as well as a surgical strategy to prevent PJFr following surgery.Apr. 2019, Spine surgery and related research, 3(2) (2), 171 - 177, English, Domestic magazine[Refereed]Scientific journal
- 金原出版(株), Apr. 2019, 整形・災害外科, 62(5) (5), 567 - 574, Japanese【脊椎脊髄外科の最近の進歩】各種疾患に対する治療法・モダリティ 転移性脊椎腫瘍に対する集学的治療[Refereed]
- BACKGROUND: To date, there have been little published data on surgical outcomes for patients with PD with thoracolumbar OVF. We conducted a retrospective multicenter study of registry data to investigate the outcomes of fusion surgery for patients with Parkinson's disease (PD) with osteoporotic vertebral fracture (OVF) in the thoracolumbar junction. METHODS: Retrospectively registered data were collected from 27 universities and their affiliated hospitals in Japan. In total, 26 patients with PD (mean age, 76 years; 3 men and 23 women) with thoracolumbar OVF who underwent spinal fusion with a minimum of 2 years of follow-up were included (PD group). Surgical invasion, perioperative complications, radiographic sagittal alignment, mechanical failure (MF) related to instrumentation, and clinical outcomes were evaluated. A control group of 296 non-PD patients (non-PD group) matched for age, sex, distribution of surgical procedures, number of fused segments, and follow-up period were used for comparison. RESULTS: The PD group showed higher rates of perioperative complications (p < 0.01) and frequency of delirium than the non-PD group (p < 0.01). There were no significant differences in the degree of kyphosis correction, frequency of MF, visual analog scale of the symptoms, and improvement according to the Japanese Orthopaedic Association scoring system between the two groups. However, the PD group showed a higher proportion of non-ambulators and dependent ambulators with walkers at the final follow-up (p < 0.01). CONCLUSIONS: A similar surgical strategy can be applicable to patients with PD with OVF in the thoracolumbar junction. However, physicians should pay extra attention to intensive perioperative care to prevent various adverse events and implement a rehabilitation regimen to regain walking ability.Mar. 2019, BMC musculoskeletal disorders, 20(1) (1), 103 - 103, English, International magazine[Refereed]Scientific journal
- Introduction: The prevalence of patients with osteoporosis continues to increase in aging societies, including Japan. The first choice for managing osteoporotic vertebral compression fracture (OVF) is conservative treatment. Failure in conservative treatment for OVF may lead to non-union or vertebral collapse, resulting in neurological deficit and subsequently requiring surgical intervention. This multicenter nationwide study in Japan was conducted to comprehensively understand the outcomes of surgical treatments for OVF non-union. Methods: This multicenter, retrospective study included 403 patients (89 males, 314 females, mean age 73.8 ± 7.8 years, mean follow-up 3.9 ± 1.7 years) with neurological deficit due to vertebral collapse or non-union after OVF at T10-L5 who underwent fusion surgery with a minimum 1-year follow-up. Radiological and clinical outcomes at baseline and at the final follow-up (FU) were evaluated. Results: OVF was present at a thoracolumbar junction such as T12 (124 patients) and L1 (117 patients). A majority of OVF occurred after a minor trauma, such as falling down (55.3%) or lifting objects (8.4%). Short segment fusion, including affected vertebra, was conducted (mean 4.0 ± 2.0 vertebrae) with 256.8 minutes of surgery and 676.1 g of blood loss. A posterior approach was employed in 86.6% of the patients, followed by a combined anterior and posterior (8.7%), and an anterior (4.7%) approach. Perioperative complications and implant failures were observed in 18.1% and 41.2%, respectively. VAS scores of low back pain (74.7 to 30.8 mm) and leg pain (56.8 to 20.7 mm) improved significantly at FU. Preoperatively, 52.6% of the patients were unable to walk and the rate of non-ambulatory patients decreased to 7.5% at FU. Conclusions: This study demonstrated that substantial improvement in activity of daily living (ADL) was achieved by fusion surgery. Although there was a considerable rate of complications, fusion surgery is beneficial for elderly OVF patients with non-union.2019, Spine surgery and related research, 3(4) (4), 361 - 367, English, Domestic magazine[Refereed]Scientific journal
- On the basis of rapid population aging, in 2007, the Japanese Orthopaedic Association (JOA) proposed a new disease concept "locomotive syndrome" as a degenerative condition of reduced mobility due to the impairment of the musculoskeletal system. Worsened locomotive components, which consist of bones, joints, and intervertebral discs, and muscles and nerves, can lead to symptoms such as pain, limited range of motion, malalignment, impaired balance, and difficulty in walking, ultimately resulting in the requirement of nursing care. "Locomotive syndrome" has gained increased interest in Japan but still not worldwide. Hence, in this brief review, we summarize an updated definition, assessment, and management of "locomotive syndrome". The JOA recommends "locomotion training" exercise intervention to be effective in maintaining motor function that comprises two simple exercises-squatting and single-leg standing. However, the extent to which exercises affect "locomotive syndrome" is unknown. Here, we further report hypothesis-generating patient cases who presented the improved sagittal spinopelvic alignment in standing radiographs and postural stability in piezoelectric force-plate measurements through our 6-month "locomotion training" outpatient rehabilitation program. It is noteworthy that "locomotion training" facilitated these improvements despite the presence of specific disorders including thoracic kyphosis and symptomatic lumbar spinal canal stenosis. This raises the need for further investigations to clarify effects of "locomotion training" exercises on the spinal alignment, global balance, and quality of life in patients with "locomotive syndrome".2019, Advances in orthopedics, 2019, 6496901 - 6496901, English, International magazine[Refereed]Scientific journal
- (株)南江堂, Nov. 2018, 整形外科, 69(12) (12), 1232 - 1232, Japanese整形トピックス 脊椎椎間板変性へのオートファジーの関与とその脊索由来細胞における恒常性維持機構の可能性[Refereed]
- (株)医学書院, Nov. 2018, 臨床整形外科, 53(11) (11), 951 - 957, Japanese椎間板研究の最前線 椎間板変性と炎症[Refereed]
- (株)医学書院, Nov. 2018, 臨床整形外科, 53(11) (11), 975 - 980, Japanese椎間板研究の最前線 椎間板変性治療 オートファジー[Refereed]
- (株)三輪書店, Nov. 2018, 脊椎脊髄ジャーナル, 31(11) (11), 1007 - 1012, Japanese【ハイテク機器を利用した最新の脊椎脊髄手術】「PediGuard」の使用経験[Refereed]
- (一社)日本脊椎脊髄病学会, Sep. 2018, Journal of Spine Research, 9(9) (9), 1388 - 1393, JapaneseATG5の抑制を介したオートファジーの阻害はストレス環境下でヒト椎間板細胞においてアポトーシスとセネッセンスを誘導し、生存率を低下させる[Refereed]
- (一社)神緑会, Aug. 2018, 神緑会学術誌, 34, 44 - 46, Japanese脊椎椎間板組織の恒常性維持におけるオートファジーの関与と役割の解明[Refereed]
- (株)北隆館, May 2018, 別冊Bio Clinica: 慢性炎症と疾患, 7(2) (2), 20 - 23, Japanese【整形外科疾患と慢性炎症】オートファジーと椎間板変性[Refereed]
- ロコモティブシンドロームに対するロコモ体操の脊椎骨盤矢状面アライメントへの影響ロコモティブシンドローム(ロコモ)に対するロコモ体操のQOLおよび脊椎骨盤パラメータへの影響について検討した。ロコモ外来を受診し、ロコチェックに少なくともひとつは該当し、6ヵ月間経過観察することができた56例を対象とした。リハビリ群35例(男性2名、女性33名)と外来経過観察のみを行った対照群21例(男性4名、女性17名)に分類した。リハビリプログラムは週1回20分間のロコモ体操の確認とストレッチおよび自宅での体操指導を半年間継続した。ロコモに対しロコモ体操を6ヵ月間継続することで、明らかな健康関連QOLの改善を認めることはできなかったが、対照群と比較しSagittal vertical axisは改善する傾向を認めた。ロコモに対するロコモ体操の継続により、脊椎矢状面アライメントを維持・改善する可能性がある。(一社)中部日本整形外科災害外科学会, Jan. 2018, 中部日本整形外科災害外科学会雑誌, 61(1) (1), 175 - 176, Japanese[Refereed]
- Dec. 2017, Osteoarthritis and cartilage, 25(12) (12), 2134 - 2146, English, International magazine[Refereed]Scientific journal
- がん患者の脊椎転移に対する直視下手術と経皮的後方固定術の全身状態、ADL、QOL改善効果骨関連事象を来たしたがんの胸腰椎転移に対して手術加療を行った60例を対象に、経皮的椎弓根スクリュー(PPS)を用いた経皮的手術と直視下手術の適応と全身状態、ADL、QOLへおよぼす影響について比較検討した。PPS手術群は18例(男性11例、女性7例、平均年齢66.9±12.6歳)、直視下手術群は42例(男性29例、女性13例、平均年齢65.2±11.5歳)であった。その結果、神経麻痺が軽微な症例に対してPPS手術を施行することで、直視下手術と比較して低侵襲にADLの改善が得られ、全身状態やQOLも同様の改善傾向にあることが示され、有用な治療法である可能性が示唆された。(一社)中部日本整形外科災害外科学会, Nov. 2017, 中部日本整形外科災害外科学会雑誌, 60(6) (6), 1079 - 1080, Japanese[Refereed]
- STUDY DESIGN: A prospective cohort study of performance status (PS) and activities of daily living (ADL) in patients with spinal metastasis. OBJECTIVE: To identify the effect of spinal surgery on PS and ADL in patients with spinal metastasis. SUMMARY OF BACKGROUND DATA: Spinal metastasis causes severe neurological deficits, resulting in drastic loss of patients' PS and ADL. However, the effect of spine surgery on PS and ADL is not well known. MATERIALS AND METHODS: Seventy patients with spinal metastasis were enrolled in this study. Forty-six patients desired and underwent spine surgery ("surgery" group) and 24 patients did not desire surgery ("nonsurgery" group). Both groups received optimal treatments, including radiation, chemotherapy, and palliative care services. Evaluation was performed at 1, 3, and 6 months after study enrollment using the Eastern Cooperative Oncology Group PS, the Barthel index (BI) for ADL, and Frankel classification for neurological status. RESULTS: There was no significant difference in baseline PS, the BI, or Frankel classification between the groups. The surgery group showed significant improvement in PS, maintaining grade 2 or less throughout the duration of the study, as well as in ADL, exceeding 70 points of the BI, compared with the nonsurgery group (P<0.05). Significantly improved neurological condition was also observed in the surgery group over the following 6 months. More than 95% of patients who underwent surgery improved their PS, the BI, and neurological status. Furthermore, >80% of these patients maintained improvement in PS, the BI, and neurological status for at least 6 months. In contrast, PS, the BI, and neurological status of patients in the "nonsurgery" group deteriorated throughout the study period. CONCLUSIONS: Spine surgery improves PS, ADL, and neurological status in patients with spinal metastasis for a minimum 6 months. This indicates that these patients can acquire an independent daily life.Oct. 2017, Clinical spine surgery, 30(8) (8), E1026-E1032, English, International magazine[Refereed]Scientific journal
- (株)全日本病院出版会, Sep. 2017, 整形外科最小侵襲手術ジャーナル, (84) (84), 79 - 83, Japanese【転移性脊椎腫瘍に対する最小侵襲脊椎安定術(MISt)】転移性脊椎腫瘍に対する出張型骨転移Cancer Boardの取り組み[Refereed]
- Aug. 2017, The spine journal : official journal of the North American Spine Society, 17(8) (8), 1163 - 1170, English, International magazine[Refereed]Scientific journal
- Mice expressing reduced levels of ERCC1-XPF (Ercc1-/Δ mice) demonstrate premature onset of age-related changes due to decreased repair of DNA damage. Muscle-derived stem/progenitor cells (MDSPCs) isolated from Ercc1-/Δ mice have an impaired capacity for cell differentiation. The mammalian target of rapamycin (mTOR) is a critical regulator of cell growth in response to nutrient, hormone, and oxygen levels. Inhibition of the mTOR pathway extends the lifespan of several species. Here, we examined the role of mTOR in regulating the MDSPC dysfunction that occurs with accelerated aging. We show that mTOR signaling pathways are activated in Ercc1-/Δ MDSPCs compared with wild-type (WT) MDSPCs. Additionally, inhibiting mTOR with rapamycin promoted autophagy and improved the myogenic differentiation capacity of the Ercc1-/Δ MDSPCs. The percent of apoptotic and senescent cells in Ercc1-/Δ MDSPC cultures was decreased upon mTOR inhibition. These results establish that mTOR signaling contributes to stem cell dysfunction and cell fate decisions in response to endogenous DNA damage. Therefore, mTOR represents a potential therapeutic target for improving defective, aged stem cells. © 2016 The Authors. Journal of Orthopaedic Research Published by Wiley Periodicals, Inc. on behalf of Orthopaedic Research Society. J Orthop Res 35:1375-1382, 2017.Jul. 2017, Journal of orthopaedic research : official publication of the Orthopaedic Research Society, 35(7) (7), 1375 - 1382, English, International magazine[Refereed]Scientific journal
- Jun. 2017, Journal of orthopaedic surgery (Hong Kong), 25(2) (2), 2309499017713917 - 2309499017713917, English, International magazine[Refereed]Scientific journal
- Jun. 2017, International orthopaedics, 41(6) (6), 1265 - 1271, English, International magazine[Refereed]Scientific journal
- 脊椎椎間板髄核におけるオートファジーの重要性とその誘導による椎間板変性予防の可能性ラット椎間板変性モデルを用いて椎間板変性へのオートファジーの関与について検討した。その結果、変性過程の進行とともにオートファジー活性が低下することが明らかになった。多種の筋骨格系細胞を用いた検討では、筋骨格系細胞の中でも椎間板髄核細胞で、特にオートファジー活性が高く、低栄養条件下で更に活性を増すことが明らかになった。今回の検討より、脊椎椎間板髄核におけるオートファジーの重要性と、オートファジー制御が脊椎椎間板疾患の新たな細胞生物学的予防法・治療法の開発へ繋がる可能性が示唆された。(一社)中部日本整形外科災害外科学会, May 2017, 中部日本整形外科災害外科学会雑誌, 60(3) (3), 547 - 548, Japanese[Refereed]
- Apr. 2017, Spine, 42(8) (8), 556 - 564, English, International magazine[Refereed]Scientific journal
- 金原出版(株), Mar. 2017, 整形・災害外科, 60(3) (3), 279 - 285, Japanese【椎間板変性の病態と治療】椎間板の微小環境 細胞代謝、オートファジーの観点から[Refereed]
- 硬膜内髄外腫瘍に起因する水頭症により意識障害を呈した2例症例1は77歳女で、右人工股関節置換術後の感染に対する股関節病巣掻爬術4週後に意識障害、歩行困難、尿失禁が出現した。頭部CTでは水頭症の所見であった。全脊椎MRIではTh3-4高位にT1等信号・T2高信号を示し、造影効果のある辺縁明瞭な硬膜内占拠性異常信号領域を認めた。硬膜内腫瘍を疑い、緊急でTh2-4椎弓切除および腫瘍摘出術を施行した。病理組織診断は神経鞘腫であった。術後3週で水頭症の改善を認め、歩行可能となった。症例2は75歳女で、L3-4高位の馬尾腫瘍に対する手術予定1ヵ月前より急激に意識障害、食欲不振、歩行困難が出現した。症例1と同様に水頭症とL3-4高位の硬膜内占拠性異常信号領域を認めた。頭蓋内圧亢進が疑われたため、脳室ドレナージを施行後、L3-4還納式椎弓切除および腫瘍摘出術を施行した。病理組織診断は神経鞘腫であった。術後3週で水頭症の改善を認め、長谷川式簡易知的機能検定スケールが術前の14/30点から30/30点へ回復した。(一社)中部日本整形外科災害外科学会, Mar. 2017, 中部日本整形外科災害外科学会雑誌, 60(2) (2), 383 - 384, Japanese[Refereed]
- (一社)日本脊椎脊髄病学会, Feb. 2017, Journal of Spine Research, 8(2) (2), 106 - 111, Japanese椎間板では他の筋骨格系組織よりもオートファジーの関与が大きく、その活性は変性とともに減少する[Refereed]
- (一社)日本脊椎脊髄病学会, Feb. 2017, Journal of Spine Research, 8(2) (2), 139 - 146, Japanese脊椎転移に対する集学的治療の予後改善効果[Refereed]
- The authors present a case of 45-year-old man with neurofibromatosis type 1 (NF-1) and thoracic scoliosis, previously undergoing fusion surgery, who developed myelopathy. This patient further complained of lightning pain when he extended and horizontally abducted the convex-side shoulder. Radiological examination revealed the progression of dystrophic scoliosis with opened spinal canals and the presence of a neurofibroma behind the spinal cord at the apical levels. Delayed development of spinal instability can occur due to dystrophy even postoperatively in patients with NF-1. After tumor resection, he had rapid recovery from myelopathy and no recurrence of radiating pain despite shoulder movement. These findings provide a speculation that high, intense amplitude movement of the shoulder toward the spinal canal causes the impingement on the neurofibroma, resulting in indirect compression of the exposed spinal cord. This is the first report describing thoracic compression myelopathy associated with paraspinal displacement of the scapula.Jan. 2017, Journal of orthopaedic surgery (Hong Kong), 25(1) (1), 2309499016684726 - 2309499016684726, English, International magazine[Refereed]Scientific journal
- Expression of adiponectin receptors in human and rat intervertebral disc cells and changes in receptor expression during disc degeneration using a rat tail temporary static compression model.BACKGROUND: Adipose tissue is a large endocrine organ known to secret adiponectin, which has anti-diabetic, anti-atherogenic, and anti-inflammatory properties. Adiponectin is widely involved in systemic disease, diabetes mellitus, and cardiac infraction. This study aimed to investigate the involvement of adiponectin in intervertebral disc (IVD) degeneration. METHODS: Adipose and IVD tissues were obtained from human patients undergoing surgery (n = 4) and from skeletally mature Sprague-Dawley rats (n = 21). Tissues were stained immunohistochemically for adiponectin and adiponectin receptors AdipoR1 and AdipoR2. Changes in adiponectin receptor expression with IVD degeneration severity were then investigated using a rat tail temporary compression model. Rat IVD tissues were stained immunohistochemically with AdipoR1 or AdipoR2, and immunopositive cell percentages were calculated. Rat nucleus pulposus (NP) and annulus fibrosus (AF) tissues were isolated separately and treated with recombinant adiponectin (Ad 0.1 or 1.0 μg/ml) and/or interleukin-1 beta (IL-1β) (0.2 μg/ml) for 24 h. The four groups were as follows: control group (no treatment), IL-1β group (IL-1β-only treatment), IL-1β+Ad (0.1) group (IL-1β and adiponectin [0.1 μg/ml] treatment), and IL-1β+Ad (1.0) group (IL-1β and adiponectin [1.0 μg/ml]). Real-time reverse transcription-polymerase chain reaction was performed to evaluate messenger-RNA (mRNA) expression of tumor necrosis factor-alpha (TNF-α) and interleukin-6 (IL-6). RESULTS: Adiponectin was widely expressed in human subcutaneous and epidural adipose tissue. In rat IVD tissue, adiponectin was not observed in NP and AF. However, both AdipoR1 and AdipoR2 were widely expressed in both human and rat IVD tissues, with no significant differences in expression levels between receptors. Furthermore, expression levels of AdipoR1 and AdipoR2 were gradually decreased with increased IVD degeneration severity. Interestingly, mRNA expression levels of TNF-α and IL-6 were significantly upregulated by IL-1β stimulation. TNF-α expression in the IL-1β+Ad 1.0 group was significantly lower than that in the IL-1β group in both NP and AF cells (P < 0.05). Finally, IL-6 expression was not affected by adiponectin treatment in IVD cells. CONCLUSIONS: This study investigated for the first time the expression of adiponectin receptors in human and rat IVD cells. The findings indicate that adiponectin produced by the systemic or epidural adipose tissue may be involved in the pathomechanism of IVD degeneration.Nov. 2016, Journal of orthopaedic surgery and research, 11(1) (1), 147 - 147, English, International magazine[Refereed]Scientific journal
- Aug. 2016, Journal of orthopaedic research : official publication of the Orthopaedic Research Society, 34(8) (8), 1466 - 74, English, International magazine[Refereed]Scientific journal
- (株)医学書院, Jul. 2016, 臨床整形外科, 51(7) (7), 601 - 605, Japanese脊椎腫瘍 最近の話題 転移性脊椎腫瘍の診断と治療戦略 骨転移Cancer Boardの活用[Refereed]
- PURPOSE: Post-operative surgical site infection (SSI) is one of the most significant complications after instrumented spinal surgery. However, implant retention feasibility for early-onset multidrug-resistant SSI is still controversial. We aimed to verify our therapeutic strategy, surgical debridement with implant retention and long-term antimicrobial therapy for post-operative early-onset multidrug-resistant SSI. METHODS: We retrospectively analyzed the clinical course of 11 cases [eight men and three women, with a mean age of 70.4 (54-82) years] with early-onset multidrug-resistant SSI out of 409 consecutive cases of spinal instrumentation surgery performed between 2007 and 2013 at our institution. RESULTS: The median duration of follow-up was 868 (178-1,922) days. All SSIs were controlled, without recurrence during follow-up. The microbial pathogens were methicillin-resistant Staphylococcus aureus (seven cases), multidrug-resistant Corynebacterium (two cases), methicillin-resistant Staphylococcus epidermidis (one case), and methicillin-resistant coagulase-negative Staphylococcus aureus (one case). The mean duration from SSI diagnosis to surgery was 2.9 (1-6) days. Ten patients underwent surgical debridement with implant retention. No patients required multiple operations. All patients were given antimicrobial treatments. Mean duration of intravenous antimicrobials (vancomycin, vancomycin+ piperacillin/tazobactam, or gentamicin) was 66.5 (12-352) days and 336 (89-1,673) days for oral antimicrobials (rifampicin + sulfamethoxazole/trimethoprim, sulfamethoxazole/trimethoprim, or minomycin). The mean duration of clinical signs and symptom recovery was 31.0 (7-73) days, and the mean time for normalization of C-reactive protein was 54.5 (7-105) days. CONCLUSIONS: Early-onset multidrug-resistant SSI was successfully treated by surgical debridement with implant retention and long-term antimicrobial therapy.Jun. 2016, International orthopaedics, 40(6) (6), 1171 - 7, English, International magazine[Refereed]Scientific journal
- (一社)中部日本整形外科災害外科学会, Jan. 2016, 中部日本整形外科災害外科学会雑誌, 59(1) (1), 201 - 202, Japanese重度症候性側彎症例への椎弓根スクリュー刺入における電磁波センサー付きプローブの有用性[Refereed]
- (一社)日本脊椎脊髄病学会, Jan. 2016, Journal of Spine Research, 7(1) (1), 25 - 30, Japanese70歳以上脊椎転移に対する手術成績[Refereed]
- (一社)日本脊椎脊髄病学会, Oct. 2015, Journal of Spine Research, 6(10) (10), 1535 - 1538, Japanese重症骨粗鬆症に伴う多発脊椎椎体骨折に対する手術的治療の問題点と対策[Refereed]
- INTRODUCTION: Nutrient deprivation is a likely contributor to intervertebral disc (IVD) degeneration. Silent mating type information regulator 2 homolog 1 (SIRT1) protects cells against limited nutrition by modulation of apoptosis and autophagy. However, little evidence exists regarding the extent to which SIRT1 affects IVD cells. Therefore, we conducted an in vitro study using human IVD nucleus pulposus (NP) cells. METHODS: Thirty-two IVD specimens were obtained from patients who underwent surgical intervention and were categorized based on Pfirrmann IVD degeneration grades. Cells were isolated from the NP and cultured in the presence of recombinant human SIRT1 (rhSIRT1) under different serum conditions, including 10 % (v/v) fetal bovine serum (FBS) as normal nutrition (N) and 1 % (v/v) FBS as low nutrition (LN). 3-Methyladenine (3-MA) was used to inhibit autophagy. Autophagic activity was assessed by measuring the absorbance of monodansylcadaverine and immunostaining and Western blotting for light chain 3 and p62/SQSTM1. Apoptosis and pathway analyses were performed by flow cytometry and Western blotting. RESULTS: Cells cultured under LN conditions decreased in number and exhibited enhanced autophagy compared with the N condition. Medium supplementation with rhSIRT1 inhibited this decrease in cell number and induced an additional increase in autophagic activity (P < 0.05), whereas the combined use of rhSIRT1 and 3-MA resulted in drastic decreases in cell number and autophagy (P < 0.05). The incidence of apoptotic cell death increased under the LN condition, which was decreased by rhSIRT1 (P < 0.05) but increased further by a combination of rhSIRT1 and 3-MA (P < 0.05). Under LN conditions, NP cells showed a decrease in antiapoptotic Bcl-2 and an increase in proapoptotic Bax, cleaved caspase 3, and cleaved caspase 9, indicating apoptosis induction via the mitochondrial pathway. These changes were suppressed by rhSIRT1 but elevated further by rhSIRT1 with 3-MA, suggesting an effect of rhSIRT1-induced autophagy on apoptosis inhibition. Furthermore, the observed autophagy and apoptosis were more remarkable in cells from IVDs of Pfirrmann grade IV than in those from IVDs of Pfirrmann grade II. CONCLUSIONS: SIRT1 protects against nutrient deprivation-induced mitochondrial apoptosis through autophagy induction in human IVD NP cells, suggesting that rhSIRT1 may be a potent treatment agent for human degenerative IVD disease.Sep. 2015, Arthritis research & therapy, 17(1) (1), 253 - 253, English, International magazine[Refereed]Scientific journal
- (公社)日本整形外科学会, Sep. 2015, 日本整形外科学会雑誌, 89(9) (9), 579 - 584, Japanese椎間板変性と臨床 未来への展望 椎間板変性の発生機序と臨床との関連について[Refereed]
- Mechanical loading is a salient factor in the progression of spinal disorders that contribute to back pain. Biological responses to loading modes like flexion/extension (F/E) in relevant spinal tissues remain unstudied. A novel, multi-axial experimental system was developed to subject viable functional spinal units (FSUs) to complex, in-situ loading. The objective was to determine biological effects of F/E in multiple spinal tissues-annulus fibrosus, nucleus pulposus, facet cartilage, and ligamentum flavum. Rabbit lumbar FSUs were mounted in a bioreactor within a robotic testing system. FSUs underwent small (0.17/0.05 Nm) and large (0.5/0.15 Nm) range-of-motion F/E for 1 or 2 h of cycling. Outcomes in each tissue, compared to unloaded FSUs, included (i) relative mRNA expression of catabolic (MMP-1, 3 and ADAMTS-5), pro-inflammatory (COX-2), and anabolic (ACAN) genes and (ii) immunoblotting of aggrecan degradation. Total energy applied to FSUs increased in groups subject to large range-of-motion and 2-h cycling, and moment relaxation was higher with large range-of-motion. F/E significantly modulated MMP1,-3 and COX-2 in facet cartilage and MMP-3 and ACAN in annulus fibrosus. Large range-of-motion loading increased MMP-mediated aggrecan fragmentation in annulus fibrosus. Biological responses to complex loading ex vivo showed variation among spinal tissues that reflect tissue structure and mechanical loading in F/E.Aug. 2015, Journal of orthopaedic research : official publication of the Orthopaedic Research Society, 33(8) (8), 1255 - 64, English, International magazine[Refereed]Scientific journal
- (株)メジカルビュー社, Apr. 2015, 関節外科, 34(4月増刊) (4月増刊), 27 - 39, Japanese【整形外科基礎の最前線2015】椎間板変性の機序と再生の可能性 基礎研究から臨床研究まで[Refereed]
- Apr. 2015, Coluna/ Columna, 14(2) (2), 77 - 81[Refereed]Scientific journal
- Mar. 2015, Cochrane Database of Systematic Reviews, 2015(3) (3)[Refereed]Scientific journal
- BACKGROUND CONTEXT: Intervertebral disc (IVD) degeneration, a major cause of low back pain, is considered to be induced by daily mechanical loading. Mechanical stress is widely known to affect cell survival and extracellular matrix metabolism in many cell types. Although the involvement of integrin α5β1 transmembrane mechanoreceptor in IVD degeneration has been reported, the precise function of integrin α5β1 remains obscure. PURPOSE: To reflect IVD tissue response to mechanical stress using a dynamic loading organ culture system and elucidate the functional impact of integrin α5β1 on the pathomechanism of IVD degeneration. STUDY DESIGN: An ex vivo study using a dynamic loading organ culture system. METHODS: Ninety-six rat IVD explants were examined. Intervertebral discs were subjected to 1.3 MPa, 1.0 Hz dynamic compressive load in the presence or absence of an Arg-Gly-Asp (RGD) peptide with affinity to the fibronectin binding-site of integrin α5β1. Cell viability and histomorphology were assessed. The localization of integrin α5β1 in the IVD was assessed by immunohistochemistry. Gene expression levels of IVD cells were evaluated using real-time reverse transcription-polymerase chain reaction. RESULTS: In the nucleus pulposus (NP), cell density and viability were reduced by dynamic compressive load. Histologic degenerative alterations, mainly seen in the NP, were the morphologic changes of NP cells. In both NP and annulus fibrosus (AF), immunohistochemistry revealed localization of integrin α5β1 and that the messenger-RNA expression of integrin α5β1 was increased by dynamic load. Dynamic load induced a catabolic effect, the stimulation of matrix metalloproteinase-3 and -13 gene expressions by NP and AF cells. The RGD peptide partially blocked the histologic alterations and the catabolic effect. CONCLUSIONS: The dynamic loading organ culture system simulated cellular responses to mechanical loading of the IVD. Our results suggest that IVD cells recognize the mechanical stress through RGD integrins, particularly the α5β1 subtype that is highly expressed in NP and AF cells. Further experiments using this system will provide information about pathomechanisms of IVD degeneration through the mechanotransduction pathways.Mar. 2015, The spine journal : official journal of the North American Spine Society, 15(3) (3), 417 - 26, English, International magazine[Refereed]Scientific journal
- (一社)日本脊椎脊髄病学会, Feb. 2015, Journal of Spine Research, 6(2) (2), 170 - 175, Japanese10年間におけるRA頸椎不安定性の進行 外来通院患者の前向き多施設共同研究[Refereed]
- (株)三輪書店, Jan. 2015, 脊椎脊髄ジャーナル, 28(1) (1), 25 - 31, Japanese[Refereed]
- DNA damage is a cause of age related pathologies, including osteoarthritis (OA). Excision repair cross complementation group 1 (ERCC1) is an endonuclease required for DNA damage repair. In this study we investigated the function of ERCC1 in chondrocytes and its association with the pathophysiology of OA. ERCC1 expression in normal and osteoarthritic cartilage was assessed, as were changes in ERCC1 expression in chondrocytes under catabolic stress. Inhibiting ERCC1 in chondrocytes under interleukin-1β stimulation using small interfering RNA (siRNA) was also evaluated. Finally, cellular senescence and apoptosis were examined in relation to ERCC1 function. ERCC1 expression was decreased in OA cartilage and increased within 4 h of exposure to interleukin (IL)-1β, but decreased after 12 h. The inhibition of ERCC1 by siRNA increased the expression of matrix metallopeptidase 13 and decreased collagen type II. ERCC1 inhibition also increased the number of apoptotic and senescent cells. The inhibition of ERCC1 in chondrocytes increased their expression of OA related proteins, apoptosis, cellular senescence, and hypertrophic-like changes which suggest that ERCC1 is critical for protecting human chondrocytes (HCs) from catabolic stresses and provides insights into the pathophysiology of OA and a potential target for its treatment. (191)Oct. 2014, Journal of orthopaedic research : official publication of the Orthopaedic Research Society, 32(10) (10), 1326 - 32, English, International magazine[Refereed]Scientific journal
- (株)三輪書店, Sep. 2014, 脊椎脊髄ジャーナル, 27(9) (9), 816 - 822, Japanese【脊椎疾患の自然経過と治療選択】リウマチ性頸椎不安定性の自然経過[Refereed]
- 脊椎疾患の自然経過解明への挑戦 リウマチ環軸関節亜脱臼の自然経過リウマチ環軸関節亜脱臼の自然経過について検討した。外来受診した関節リウマチ(RA)患者267例を対象とした。開始時に127例(46.7%)に不安定性を認めたが、最終時には188例(70.4%)へ増加した。開始時に不安定性のなかった140例中、10例(7.1%)が最終時には脊柱管狭窄や頭蓋底陥入など脊髄症発症の可能性のある状態に進行した。軽度環軸関節前方亜脱臼(AAS)(ADI<10mm)37例(17.5%)、軽度環軸関節垂直亜脱臼(VS)(Ranawat値>10mm)24例(37.5%)が、最終時に脊髄症を発症する可能性ある状態に進行した。VSのみの46例が重度SASを合併するようになる比率は23.9%で、30.4%が脊髄症を発症する可能性のある状態に進行した。頸椎不安定性の明らかな悪化因子は、経口ステロイド剤服用、開始時ムチランス変形、調査期間中におけるムチランス化であった。(公社)日本整形外科学会, May 2014, 日本整形外科学会雑誌, 88(5) (5), 368 - 375, Japanese[Refereed]
- The intervertebral disc nucleus pulposus (NP) has two phenotypically distinct cell types-notochordal cells (NCs) and non-notochordal chondrocyte-like cells. In human discs, NCs are lost during adolescence, which is also when discs begin to show degenerative signs. However, little evidence exists regarding the link between NC disappearance and the pathogenesis of disc degeneration. To clarify this, a rat tail disc degeneration model induced by static compression at 1.3 MPa for 0, 1, or 7 days was designed and assessed for up to 56 postoperative days. Radiography, MRI, and histomorphology showed degenerative disc findings in response to the compression period. Immunofluorescence displayed that the number of DAPI-positive NP cells decreased with compression; particularly, the decrease was notable in larger, vacuolated, cytokeratin-8- and galectin-3-co-positive cells, identified as NCs. The proportion of TUNEL-positive cells, which predominantly comprised non-NCs, increased with compression. Quantitative PCR demonstrated isolated mRNA up-regulation of ADAMTS-5 in the 1-day loaded group and MMP-3 in the 7-day loaded group. Aggrecan-1 and collagen type 2α-1 mRNA levels were down-regulated in both groups. This rat tail temporary static compression model, which exhibits decreased NC phenotype, increased apoptotic cell death, and imbalanced catabolic and anabolic gene expression, reproduces different stages of intervertebral disc degeneration.Mar. 2014, Journal of orthopaedic research : official publication of the Orthopaedic Research Society, 32(3) (3), 455 - 63, English, International magazine[Refereed]Scientific journal
- OBJECTIVE: To test whether the interaction between annulus fibrosus cells (AFCs) and endothelial cells (ECs) disrupts matrix homeostasis and stimulates production of innervation mediators. METHODS: Human microvascular ECs were cultured in the conditioned media of AF cell culture derived from degenerated human surgical specimen. Matrix-metalloproteinases (MMPs) and platelet-derived growth factor (PDGF) of ECs of this culture were analyzed by qRT-PCR, Western, and immunofluorescence. Vascular endothelial growth factor (VEGF), Interleukin-8 (IL-8), and nerve growth factor (NGF) in the media of this cell culture were assayed by ELISA. To determine the effects of ECs on AFCs, qRT-PCR was performed to determine mRNA levels of collagen I, II and aggrecan in AFCs cultured in EC conditioned media. RESULTS: Compared to ECs cultured in naïve media, ECs exposed to AFC conditioned media expressed higher mRNA and protein levels of key biomarkers of invasive EC phenotype, MMP-2 (2×), MMP-13 (4×), and PDGF-B (1.5-2×), and NGF (24.9 ± 15.2 pg/mL vs 0 in naïve media). Treatment of AF cells with EC culture conditioned media decreased collagen type II expression two fold. Considerable quantities of pro-angiogenic factors IL-8 (396.7 ± 302.0 pg/mL) and VEGF (756.2 ± 375.9 pg/mL) were also detected in the conditioned media of untreated AF cell culture. DISCUSSION: AFCs from degenerated discs secreted factors which stimulated EC production of factors known to induce matrix degradation, angiogenesis, and innervation. IL-8 and VEGF maybe the secreted factors from AFCs which mediate a pro-angiogenic stimulus often implicated in the development of disc degeneration.Feb. 2014, Osteoarthritis and cartilage, 22(2) (2), 344 - 54, English, International magazine[Refereed]Scientific journal
- INTRODUCTION: The intervertebral disc has a complex structure originating developmentally from both the mesenchyme and notochord. Notochordal cells disappear during adolescence, which is also when human discs begin to show degenerative signs. During degeneration later in life, disc cells decline because of apoptosis. Although many animal models have been developed to simulate human disc degeneration, few studies have explored the long-term changes in cell population and phenotype. Our objective was to elucidate the time-dependent notochordal cell disappearance and apoptotic cell death in a rat tail static compression-induced disc degeneration model. METHODS: Twenty-four 12-week-old male Sprague-Dawley rat tails were instrumented with an Ilizarov-type device and loaded statically at 1.3 MPa for up to 56 days. Loaded and distal-unloaded discs were harvested. Changes in cell number and phenotype were assessed with histomorphology and immunofluorescence. Apoptosis involvement was determined with terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) staining and immunohistochemistry. RESULTS: The number of disc nucleus pulposus and annulus fibrosus cells decreased with the loading period; particularly, the decrease was notable at day 7 in larger, vacuolated, cytokeratin-8- and galectin-3-co-positive cells, indicating notochordal origin. Subsequently, the proportion of cells positive for TUNEL and cleaved caspase-3, markers of apoptosis induction, increased from day 7 through day 56. Although the percentage of cells immunopositive for cleaved caspase-8, a marker of apoptosis initiation through the death-receptor pathway, increased only at day 7, the percentage of cells immunopositive for cleaved caspase-9 and p53-regulated apoptosis-inducing protein 1 (p53AIP1), markers of apoptosis initiation through the p53-mediated mitochondrial pathway, increased from day 7 through day 56. The percentage of cells immunopositive for B-cell lymphoma 2 (Bcl-2) and silent mating type information regulation 2 homolog 1 (SIRT1), antiapoptotic proteins, decreased consistently with compression. CONCLUSIONS: This rat tail model mimics notochordal cell disappearance and apoptotic cell death in human disc aging and degeneration. Sustained static compression induces transient activation of apoptosis through the death-receptor pathway and persistent activation of apoptosis through the p53-mediated mitochondrial pathway in disc cells. The increased proapoptotic and decreased antiapoptotic proteins observed at all time points signify static compression-induced disc cell death and degeneration.Jan. 2014, Arthritis research & therapy, 16(1) (1), R31, English, International magazine[Refereed]Scientific journal
- OBJECTIVE: To clarify the incidence and predictive risk factors of cervical spine instabilities which may induce compression myelopathy in patients with rheumatoid arthritis (RA). METHODS: Three types of cervical spine instability were radiographically categorized into "moderate" and "severe" based on atlantoaxial subluxation (AAS: atlantodental interval >3 mm versus ≥10 mm), vertical subluxation (VS: Ranawat value <13 mm versus ≤10 mm), and subaxial subluxation (SAS: irreducible translation ≥2 mm versus ≥4 mm or at multiple). 228 "definite" or "classical" RA patients (140 without instability and 88 with "moderate" instability) were prospectively followed for >5 years. The endpoint incidence of "severe" instabilities and predictors for "severe" instability were determined. RESULTS: Patients with baseline "moderate" instability, including all sub-groups (AAS(+) [VS(-) SAS(-)], VS(+) [SAS(-) AAS(±)], and SAS(+) [AAS(±) VS(±)]), developed "severe" instabilities more frequently (33.3% with AAS(+), 75.0% with VS(+), and 42.9% with SAS(+)) than those initially without instability (12.9%; p<0.003, p<0.003, and p = 0.061, respectively). The incidence of cervical canal stenosis and/or basilar invagination was also higher in patients with initial instability (17.5% with AAS(+), 37.5% with VS(+), and 14.3% with SAS(+)) than in those without instability (7.1%; p = 0.028, p<0.003, and p = 0.427, respectively). Multivariable logistic regression analysis identified corticosteroid administration, Steinbrocker stage III or IV at baseline, mutilating changes at baseline, and the development of mutilans during the follow-up period correlated with the progression to "severe" instability (p<0.05). CONCLUSIONS: This prospective cohort study demonstrates accelerated development of cervical spine involvement in RA patients with pre-existing instability--especially VS. Advanced peripheral erosiveness and concomitant corticosteroid treatment are indicators for poor prognosis of the cervical spine in RA.2014, PloS one, 9(2) (2), e88970, English, International magazine[Refereed]Scientific journal
- STUDY DESIGN: A laboratory investigation using porcine model. OBJECTIVE: To clarify the effectiveness of the soft coagulation system for stopping bleeding from the epidural vein using different outputs and the safety in terms of tissue damage including spinal cord injury. SUMMARY OF BACKGROUND DATA: Problems associated with coagulation using an electrosurgical device, such as carbonization of tissue or adhesion to the electrode, have been highlighted. So called "soft coagulation" has been developed to solve these problems. Its' utility as well as the safety of the neural structure in spine surgery has never been reported. METHODS: A total of 3 animals and 45 spinal segments were used. Total laminectomy was performed to expose the dural tube and epidural venous plexus. Stable bleeding was induced by a 22 G needle puncture. Soft coagulation monopolar output (SCM), soft coagulation bipolar output (SCB), and conventional bipolar output (CB) were used as the coagulators. Valid hemostasis was defined as macroscopically complete bleeding stoppage by coagulation within 3 minutes. The neurological assessment was evaluated by somatosensory evoked potential. Histologic analysis was performed to determine the area of thermal damage. RESULTS: Valid hemostasis ratio was 75.0% of SCM group, 68.8% of SCB group, and 30.8% of CB group. Somatosensory evoked potential monitoring revealed that spinal cord injury was observed in 4 lesions (25%) of the SCM group. Neither bipolar groups (SCB and CB) showed any changes in waveform pattern. Histologic analysis revealed that severe thermal damages were observed in the epidural space of the SCM group. CONCLUSIONS: The usefulness of soft coagulation is revealed in terms of bleeding stoppage from epidural vessels and reduced soft-tissue damage compared with the conventional electric device. However, assessing the potential risk of severe neural tissue damage including spinal cord injury, a bipolar soft coagulation is strongly recommended for use in spine surgery.Oct. 2013, Journal of spinal disorders & techniques, 26(7) (7), E281-5 - 5, English, International magazine[Refereed]Scientific journal
- PURPOSE: A retro-odontoid pseudotumor is usually a reactive fibrocartilaginous mass associated with atlantoaxial subluxation (AAS). However, a retro-odontoid pseudotumor not associated with AAS, which undergoes spontaneous regression following C1 laminoplasty, has been reported. The purpose of this study was to report surgical outcomes of C1 laminectomy for retro-odontoid pseudotumor without AAS. MATERIALS AND METHODS: The cases of seven patients (mean age 75.6 ± 7.6 years-old) with retro-odontoid pseudotumor without AAS were reviewed. The mean follow up time was 52.3 ± 25.5 months. Each patient underwent a C1 laminectomy with an additional C3-6 expansion laminoplasty in three patients. The Japanese Orthopaedic Association score (JOA score) was used for neurological assessment. Pseudotumor size and additional AAS were analyzed using MRI and radiography. RESULTS: All patients exhibited neurological improvement following surgery, the JOA score improved from 7.2 ± 3.2 to 14.1 ± 2.6. The mean O-C2 and C2-7 angle decreased from -3.2 ± 2.1° to -3.9 ± 1.7°, showing a slight kyphotic change. Postoperative AAS was not observed. All pseudotumors spontaneously resolved, and recurrence and regrowth were not observed. Five patients had MRIs after gadolinium administration; four patients who showed enhancement of the pseudotumor had almost complete reduction within 1 year following surgery. DISCUSSION: Our study, assessing the outcome of C1 laminectomy for retro-odontoid pseudotumor, found neurological improvement in all cases. Since all pseudotumors were reduced and additional AAS was not observed, C1 laminectomy for retro-odontoid pseudotumor, in the absence of AAS, is recommended as a therapeutic strategy.May 2013, European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 22(5) (5), 1119 - 26, English, International magazine[Refereed]Scientific journal
- It is suggested that pro-inflammatory cytokines, which are produced by interaction of the intervertebral nucleus pulposus cells and macrophages, may be linked to the cause of pain of the intervertebral disc herniation. This study carries out the in vitro experiments to examine the mechanism, with the use of the co-culture of an immortalized cell line of nucleus pulposus of the human intervertebral disc and the macrophage cell line. As a result, it is found that the production of pro-inflammatory cytokines is significantly larger at the co-culture group than at the independent culture group. Also, at the co-culture group of macrophages and intervertebral nucleus pulposus cells with over-expression of fas ligand (FasL), the production of pro-inflammatory cytokines is found to be far larger. Furthermore, it is found that these pro-inflammatory cytokines are produced mainly by the intervertebral nucleus pulposus cells with over-expression of FasL, and that the expression of a disintegrin and metalloproteinase (ADAM) 10, which controls the expression of FasL and activates reverse signaling inside cells, also increases. From these findings, it is suggested that FasL and ADAM10 play an important role in the production of pro-inflammatory cytokines coming from interaction of the intervertebral nucleus pulposus cells and macrophages.Apr. 2013, Journal of orthopaedic research : official publication of the Orthopaedic Research Society, 31(4) (4), 608 - 15, English, International magazine[Refereed]Scientific journal
- 【腰椎疾患up-to-date】 腰椎疾患に対する保存的治療 神経症状に対する薬物治療 腰部脊柱管狭窄症に伴う根性痛に対するプレガバリンの効果と投与上の留意点腰部脊柱管狭窄症(LSCS)に伴う根性痛に対するプレガバリンの効果と投与上の留意点について検討した。根性痛を有する根型あるいは混合型のLSCSと診断され、少なくともセレコキシブを2週間、リマプロストアルファデクスを6週間以上投与しても十分な効果が得られず、プレガバリンを投与した41例を対象とした。副作用の発現は、軽度のものも含めて眠気が29.3%、ふらつき感が14.6%と多く、顔面の浮腫感や紅潮、吐き気といったものが続き、49%は内服を中止した。平均投与量は、副作用あり群と副作用なし群で有意差はなかった。特に80歳代の高齢者においては副作用の発現が83.3%と明らかに多い傾向であったが、有意差は検出しなかった。根性痛に対する効果としては、有効が78.1%(著効24.4%を含む>、やや有効が7.3%、無効が14.6%であった。(株)南江堂, Apr. 2013, 別冊整形外科, (63) (63), 100 - 102, Japanese[Refereed]
- BACKGROUND CONTEXT: Destruction of extracellular matrix (ECM) leads to intervertebral disc degeneration (IDD), which underlies many spine-related disorders. Matrix metalloproteinases (MMPs), and disintegrins and metalloproteinases with thrombospondin motifs (ADAMTSs) are believed to be the major proteolytic enzymes responsible for ECM degradation in the intervertebral disc (IVD). PURPOSE: To summarize the current literature on gene expression and regulation of MMPs, ADAMTSs, and tissue inhibitors of metalloproteinases (TIMPs) in IVD aging and IDD. METHODS: A comprehensive literature review of gene expression of MMP, ADAMTS, and TIMP in human IDD and reported studies on regulatory factors controlling their expressions and activities in both human and animal model systems. RESULTS: Upregulation of specific MMPs (MMP-1, -2, -3, -7, -8, -10, and -13) and ADAMTS (ADAMTS-1, -4, and -15) were reported in human degenerated IVDs. However, it is still unclear from conflicting published studies whether the expression of ADAMTS-5, the predominant aggrecanase, is increased with IDD. Tissue inhibitors of metalloproteinase-3 is downregulated, whereas TIMP-1 is upregulated in human degenerated IVDs relative to nondegenerated IVDs. Numerous studies indicate that the expression levels of MMP and ADAMTS are modulated by a combination of many factors, including mechanical, inflammatory, and oxidative stress, some of which are mediated in part through the p38 mitogen-activated protein kinase pathway. Genetic predisposition also plays an important role in determining gene expression of MMP-1, -2, -3, and -9. CONCLUSIONS: Upregulation of MMP and ADAMTS expression and enzymatic activity is implicated in disc ECM destruction, leading to the development of IDD. Future IDD therapeutics depends on identifying specific MMPs and ADAMTSs whose dysregulation result in pathological proteolysis of disc ECM.Mar. 2013, The spine journal : official journal of the North American Spine Society, 13(3) (3), 331 - 41, English, International magazine[Refereed]Scientific journal
- STUDY DESIGN: A prospective minimum 5-year follow-up study of the cervical spine in patients with rheumatoid arthritis (RA) initially without cervical involvement. OBJECTIVE: To clarify the incidence and aggravation of cervical spine instabilities and their predictive risk factors in patients with RA. SUMMARY OF BACKGROUND DATA: Many reports have shown the progression of cervical spine involvement in RA. However, few articles have described comprehensive evaluation of its prognostic factors. METHODS: A total of 140 patients with "definite" or "classical" RA initially without cervical involvement were prospectively followed for more than 5 years. Radiographical cervical findings were classified into 3 instabilities: atlantoaxial subluxation (AAS: atlantodental interval >3 mm), vertical subluxation (VS: Ranawat value <13 mm), and subaxial subluxation (SAS: irreducible translation ≥ 2 mm). "Severe" extents were defined as AAS with atlantodental interval 10 mm or more, VS with Ranawat value 10 mm or less, and SAS with translation 4 mm or more or at multiple levels. Incidence of these developments and predictors for "severe" instabilities were investigated. RESULTS: During 6.0 ± 0.5 years, 43.6% of 140 patients developed cervical instabilities: AAS in 32.1%, VS in 11.4%, and SAS in 16.4% with some combinations. "Severe" instabilities were exhibited in 12.9% of patients: AAS in 3.6%, VS in 6.4%, and SAS in 5.0%. Furthermore, 4.3% presented canal stenosis, with 13 mm or less space available for the spinal cord (SAC) due to "severe" AAS or "severe" VS in 2.9% and 12 mm or less SAC due to "severe" SAS in 2.1%. Multivariable logistic regression analysis identified corticosteroid administration, mutilating changes at baseline, and the development of nonmutilating into mutilating changes during the follow-up period correlated with "severe" instabilities (P < 0.05). CONCLUSION: A minimum 5-year follow-up reveals the occurrence of cervical instabilities in 43.6%, "severe" aggravation in 12.9%, and decreased SAC in 4.3% of patients with RA. Characteristics of severe disease activity-established mutilating changes, progressive development into mutilating changes, and potentially concomitant corticosteroid treatment-are indicators for poor prognosis of the cervical spine in RA.Dec. 2012, Spine, 37(26) (26), 2136 - 44, English, International magazine[Refereed]Scientific journal
- INTRODUCTION: Little is known about when and how progressive spondylolisthesis occurs. In this report segmental motion related to age and disc degeneration at L4/5 disc was investigated. MATERIALS AND METHODS: 637 patients with low back and/or leg pain underwent radiologic and MRI examinations simultaneously. Because 190 patients with conditions which might impede accurate measurement were excluded, 447 patients, comprising 268 men and 179 women, were included; age range, was 10-86 (mean: 53) years. Three radiologic parameters slip in neutral position (mm), sagittal translation (mm), and segmental angulation (degrees) were examined at the L4/5 segment. On T2-weighted MRI, severity of disc degeneration at L4/5 was classified by Pfirrmann's criteria, grade 1-5. RESULTS: Results showed stage of disc degeneration that progressed according to aging with significant differences except for between grades 4 and 5. Amount of anterior slip was small among grades 1 to 3; however, it greatly increased between grades 3 and 4 and between grades 4 and 5, suggesting that grade 3 disc degeneration has a potential risk of future progression of anterior slip. This finding may also suggest that once significant slip occurs, it will progress to the final grade. Furthermore, the grade 3 degeneration group exhibited large amounts of motion in both angulation and translation, suggesting it was the most unstable group. CONCLUSION: Our results with radiography and MRI indicate that grade 3 disc degeneration is a critical stage for the progression of lumbar spondylolisthesis at L4/5 segment.Nov. 2012, European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 21(11) (11), 2134 - 9, English, International magazine[Refereed]Scientific journal
- OBJECTIVE: The expression of proinflammatory factors such as tumor necrosis factor α (TNFα), interleukin-6 (IL-6), IL-8, and prostaglandin E(2) (PGE(2) ) is significantly correlated with the symptoms of herniated disc disease. Among the different types of immune cells, macrophages are frequently noted in the herniated disc tissue. We undertook this study to clarify the interaction of the intervertebral disc (IVD) and macrophages with regard to the production of TNFα, IL-6, IL-8, and PGE(2) . METHODS: We developed 2 animal models to assess the interactions of IVDs with macrophages in terms of TNFα, IL-6, IL-8, and PGE(2) production and pain-related behavior. We also cocultured IVDs and macrophages to assess the role of TNFα in IL-6, IL-8, and PGE(2) production. RESULTS: IVD autografts induced TNFα, IL-6, IL-8, and cyclooxygenase 2 (COX-2) messenger RNA (mRNA) up-regulation; macrophage infiltration was seen shortly after the autograft was implanted. A significant decrease was noted in the mechanical threshold of the ipsilateral paw following the up-regulation of TNFα, IL-6, IL-8, and COX-2 mRNA. Only IVD and macrophage cocultures resulted in IL-8 and PGE(2) up-regulation. TNFα up-regulation was maximized before that of IL-6 and IL-8. TNFα neutralization attenuated production of IL-6 and PGE(2) , but not that of IL-8. Neutralization of TNFα and IL-8 significantly increased the paw withdrawal mechanical threshold in the IVD autograft and spinal nerve ligation model. CONCLUSION: IVD-macrophage interaction plays a major role in sciatica and in the production of TNFα, IL-6, IL-8, and PGE(2) . TNFα is required for IL-6 and PGE(2) production, but not for IL-8 production, during IVD-macrophage interaction. Neutralization of TNFα and IL-8 can be a valuable therapy for herniated disc disease.Aug. 2012, Arthritis and rheumatism, 64(8) (8), 2601 - 10, English, International magazine[Refereed]Scientific journal
- PURPOSE: A procedure using an interspinous process spacer (IPS) was recently developed for the treatment of posture-dependent lumbar spinal-canal stenosis (LSS) patients. We developed a novel IPS which can be inserted with simpler procedures and removed percutaneously. The objectives of this study were: (1) to evaluate the feasibility and safety of this novel technique, and (2) to assess the effectiveness of this spacer in terms of preventing an increase of epidural pressure in lumbar extension using a porcine model. METHODS: Eight young pigs were used. Under general anesthesia and image guidance, the spacers were inserted. Three months after operation, MR images were taken and all spacers were removed. Blood samples were obtained before and 1, 3, 7 days after surgery. After killing the animals, the lumbar spines were observed macroscopically. Another six animals were used. Under general anesthesia and image guidance, a flexible pressure transducer was inserted into the epidural space and epidural pressure was measured in neutral and at maximum extension with and without spacer insertion. RESULTS: Percutaneous insertion and removal of the spacer was successful for all animals through small skin incisions. MR images showed minimal damage to the muscle. No significant up-regulation of Interleukin-6 (IL-6) and CRP was detected. Macroscopic observation of the lumbar spine 3 months after the operation revealed that the area of the interspinous process contacting with the inserted spacer showed some bone erosion/remodeling. Insertion of the spacer did not affect the epidural pressure in neutral but significantly prevented an increase of epidural pressure in lumber extension. CONCLUSIONS: This study demonstrated that the percutaneous insertion and removal of a novel IPS was feasible and safe using a simple technique. Furthermore, this procedure can be recognized as minimally invasive surgery from the viewpoint of skin incision, short insertion track, inflammatory mediators, and muscle damage. Improvements should be attempted in future studies using softer or more elastic materials for the spacer to lessen bone erosion/remodeling at contacting area of the inserted spacer.Jun. 2012, European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 21(6) (6), 1178 - 85, English, International magazine[Refereed]Scientific journal
- (株)三輪書店, Apr. 2012, 脊椎脊髄ジャーナル, 25(4) (4), 439 - 443, Japanese【腰痛のサイエンス】(第8章)腰痛関連因子 腰痛と遺伝子 椎間板再生と遺伝子[Refereed]
- INTRODUCTION: The longitudinal degradation mechanism of extracellular matrix (ECM) in the interbertebral disc remains unclear. Our objective was to elucidate catabolic and anabolic gene expression profiles and their balances in intervertebral disc degeneration using a static compression model. METHODS: Forty-eight 12-week-old male Sprague-Dawley rat tails were instrumented with an Ilizarov-type device with springs and loaded statically at 1.3 MPa for up to 56 days. Experimental loaded and distal-unloaded control discs were harvested and analyzed by real-time reverse transcription-polymerase chain reaction (PCR) messenger RNA quantification for catabolic genes [matrix metalloproteinase (MMP)-1a, MMP-2, MMP-3, MMP-7, MMP-9, MMP-13, a disintegrin and metalloproteinase with thrombospondin motifs (ADAMTS)-4, and ADAMTS-5], anti-catabolic genes [tissue inhibitor of metalloproteinases (TIMP)-1, TIMP-2, and TIMP-3], ECM genes [aggrecan-1, collagen type 1-α1, and collagen type 2-α1], and pro-inflammatory cytokine genes [tumor necrosis factor (TNF)-α, interleukin (IL)-1α, IL-1β, and IL-6]. Immunohistochemistry for MMP-3, ADAMTS-4, ADAMTS-5, TIMP-1, TIMP-2, and TIMP-3 was performed to assess their protein expression level and distribution. The presence of MMP- and aggrecanase-cleaved aggrecan neoepitopes was similarly investigated to evaluate aggrecanolytic activity. RESULTS: Quantitative PCR demonstrated up-regulation of all MMPs and ADAMTS-4 but not ADAMTS-5. TIMP-1 and TIMP-2 were almost unchanged while TIMP-3 was down-regulated. Down-regulation of aggrecan-1 and collagen type 2-α1 and up-regulation of collagen type 1-α1 were observed. Despite TNF-α elevation, ILs developed little to no up-regulation. Immunohistochemistry showed, in the nucleus pulposus, the percentage of immunopositive cells of MMP-cleaved aggrecan neoepitope increased from 7 through 56 days with increased MMP-3 and decreased TIMP-1 and TIMP-2 immunopositivity. The percentage of immunopositive cells of aggrecanase-cleaved aggrecan neoepitope increased at 7 and 28 days only with decreased TIMP-3 immunopositivity. In the annulus fibrosus, MMP-cleaved aggrecan neoepitope presented much the same expression pattern. Aggrecanase-cleaved aggrecan neoepitope increased at 7 and 28 days only with increased ADAMTS-4 and ADAMTS-5 immunopositivity. CONCLUSIONS: This rat tail sustained static compression model mimics ECM metabolic imbalances of MMPs, aggrecanases, and TIMPs in human degenerative discs. A dominant imbalance of MMP-3/TIMP-1 and TIMP-2 relative to ADAMTS-4 and ADAMTS-5/TIMP-3 signifies an advanced stage of intervertebral disc degeneration.Mar. 2012, Arthritis research & therapy, 14(2) (2), R51, English, International magazine[Refereed]Scientific journal
- (株)三輪書店, Jan. 2012, 脊椎脊髄ジャーナル, 25(1) (1), 33 - 38, Japanese【関節リウマチ(RA)頸椎病変の治療戦略】関節リウマチ(RA)頸椎病変の手術適応と術式選択 病変進行の観点から[Refereed]
- (一社)日本脊椎脊髄病学会, Sep. 2011, Journal of Spine Research, 2(9) (9), 1447 - 1453, Japaneseリウマチ性頸椎不安定性の発生とその重症化 不安定性を認めない症例に対する前向き追跡調査[Refereed]
- House-keeping genes (HKGs) are generally used as endogenous controls for molecular normalization in quantitative PCR analysis. However, whether all the so-called HKGs are useful for intervertebral disc research is controversial. Our objective was, using a prevalidated rat tail static compression loading-induced disc degeneration model, to clarify the feasibility of common HKGs for gene-quantification in the nucleus pulposus cells. In real-time RT-PCR for five HKGs [β-actin, β-glucuronidase, β-2 microglobulin, glyceraldehyde 3-phosphate dehydrogenase (GAPDH), and lactate dehydrogenase A (LDHA)], static compression at 1.3 MPa for up to 56 days demonstrated messenger RNA (mRNA) expression levels of consistent β-2 microglobulin and GAPDH, slightly up-regulated β-glucuronidase, and fairly down-regulated β-actin and LDHA. Especially, β-actin had a drastic suppression to 0.15-fold in the loaded relative to unloaded discs at 7 days. In immunofluorescence, β-actin showed a significant down-regulation to almost undetectable levels from 28 days, while GAPDH was constantly detected throughout. β-Actin mRNA and protein-distribution are thought to be affected by the loading treatment, however, GAPDH mRNA and protein-distribution can retain relatively stable expressions. Under prolonged static compression, β-actin and probably LDHA are inappropriate, and GAPDH is a feasible HKG as internal references in the disc cells.Aug. 2011, Journal of orthopaedic research : official publication of the Orthopaedic Research Society, 29(8) (8), 1284 - 90, English, International magazine[Refereed]Scientific journal
- STUDY DESIGN: A 5-year prospective cohort study of cervical spine instabilities in rheumatoid arthritis (RA). OBJECTIVE.: To clarify the natural course of cervical instabilities in RA patients and to determine predictors for the prognosis of RA cervical spine. SUMMARY OF BACKGROUND DATA: Although several previous studies investigating the natural history of RA cervical spine have been reported, few of them have described radiological predictive factors for the aggravation of these instabilities. METHODS: Two hundred sixty-seven outpatients with "definite" or "classical" RA initially assigned were prospectively followed for over 5 years. Radiographic cervical findings were classified into three representative instabilities: atlantoaxial subluxation (AAS), vertical subluxation (VS), and subaxial subluxation (SAS). The aggravations of these instabilities were identified in the cases with a decrease of at least 2 mm in the Ranawat value of VS, an increase of at least 1 mm in translation of SAS, or a new development of respective instabilities. RA stages and mutilating changes were assessed in the hand radiograms. RESULTS: Fifty-two point four percent of 267 patients, without any cervical instability at the beginning of follow-up, decreased to 29.6% at the end (P < 0.01), whereas VS and SAS increased significantly (P < 0.01). The aggravation of VS was observed at statistically higher rates in patients with pre-existing instabilities as follows; 25.7% of AAS (P = 0.01), 49.1% of VS (P < 0.01), and 41.2% of SAS (P = 0.06). The aggravation of SAS was also detected in 47.2% of VS and 64.7% of SAS (P < 0.01). Patients with pre-existing mutilating changes exhibited the aggravations of VS and SAS in significantly higher incidences (P < 0.01). Furthermore, the cases with development into mutilating changes during the follow-up showed significantly higher tendencies for the aggravations of these instabilities (P < 0.01). CONCLUSION: The incidences of VS and SAS significantly increased during the minimum 5-year follow-up. Prognostic factors of these instabilities were revealed to be the initial radiological findings of VS, SAS, and mutilating changes.Apr. 2011, Spine, 36(8) (8), 647 - 53, English, International magazine[Refereed]Scientific journal
- INTRODUCTION: Intervertebral disc tissue homeostasis is modulated by a variety of molecules. Silent mating type information regulator 2 homolog 1 (SIRT1) plays a key role in various physiological processes. The aim of the present study was to verify the expression of SIRT1 and determine SIRT1 function in human intervertebral disc cell homeostasis. METHODS: Human nucleus pulposus (NP) cells were obtained from 24 surgical patients (mean age: 39.4 years) and monolayer-cultured. SIRT1 expression was investigated using RT-PCR analysis and immunohistochemical staining. Quantitative real-time RT-PCR was performed to detect mRNA expression of SIRT1 and other genes: aggrecan, collagen type 2 and Sox9. The effect of SIRT1 on the extracellular matrix metabolism of NP cells was examined using recombinant human SIRT1 protein and a protein delivery reagent. Cell number and proliferation activity were measured following SIRT1 treatment. To reveal the deacetylation potential of transfected recombinant human SIRT1, western blotting for acetylated p53 was utilized. R-phycoerythrin was used for the negative control. RESULTS: SIRT1 expression was confirmed at both mRNA and protein levels in almost all NP cells. Real-time RT-PCR analysis showed SIRT1 mRNA expression significantly increased with donor age (P <0.05, ρ = 0.492). Pfirrmann grade 3 discs showed significantly higher SIRT1 mRNA expression than other grades. SIRT1 treatment significantly reduced aggrecan, Sox9 and collagen type 2 mRNA expression in a dose-dependent manner in all disease classes and disc degeneration grades. Proliferation activity was decreased by SIRT1 treatment in lumbar spinal stenosis and lumbar disc herniation, Pfirrmann grade 3 and grade 4 discs. In contrast, it was significantly upregulated in idiopathic scoliosis, Pfirrmann grade 2 discs. The negative control protein did not affect extracellular matrix metabolism or proliferation activity. CONCLUSIONS: We demonstrate for the first time that SIRT1 is expressed by human NP cells. SIRT1 expression was significantly elevated in an early degeneration stage. SIRT1 affected both extracellular matrix metabolism and proliferation activity; the effect of SIRT1 was altered according to disease class and disc degeneration grade. SIRT1 appears to play a key role in homeostasis during the human intervertebral disc degeneration process.2011, Arthritis research & therapy, 13(6) (6), R200, English, International magazine[Refereed]Scientific journal
- STUDY DESIGN: Case report. OBJECTIVE: To describe a patient with nodular fasciitis in the sciatic nerve, detected by positron emission tomography (PET). SUMMARY OF BACKGROUND DATA: Severe sciatic pain is commonly caused by lumbar disc herniation, lumbar spinal stenosis, or neoplastic lesion. These lesions are usually diagnosed by plain radiograph, myelography, computed tomography, and magnetic resonance imaging.Nodular fasciitis is a benign connective tissue tumor usually presenting as a firm, rapidly-growing lesion, occasionally arising in the forearm. Only 5 cases of intraneural nodular fasciitis have been reported in the published data, and although some have demonstrated mild neuropathy, none have shown nodular fasciitis with intractable sciatica. METHODS: A 37-year old woman experienced severe sciatica after hitting her left buttock hard on the edge of a bathtub. Physical examination demonstrated intense radiating pain from the left buttock to the lateral calf. There was weakness in the sciatic nerve innervated musculature. She was diagnosed with piriformis syndrome in a local hospital. However, the symptoms remained unchanged after surgery, releasing the piriformis. Conventional imaging of the sciatica including plain radiograph, computed tomography, and magnetic resonance imaging of the spine showed a return of abnormal findings. RESULTS: PET detected an abnormal lesion in the sciatic nerve in the posterior compartment of the patient's left thigh, indicating an intraneural tumor in the sciatic nerve. Subtotal resection was achieved and histologic evaluation of the specimen showed the typical features of nodular fasciitis. After surgery, the patient was relieved of all symptoms, with no evidence of recurrence at the recent 2-year follow-up. CONCLUSION: This is the first reported case of intraneural nodular fasciitis presenting with severe radiculopathy. Nodular fasciitis should be considered in the differential diagnosis of severe sciatica. PET may be a useful tool for diagnosing sciatica of unknown origin that cannot be identified using conventional imaging tools.Oct. 2010, Spine, 35(21) (21), E1137-40, English, International magazine[Refereed]Scientific journal
- 椎間板変性機序の解明と新たな治療戦略に関する研究椎間板変性に対する安定した動物モデルの確立が重要と考え、椎間板に圧負荷を加え変性を誘起するモデルを作製し、画像診断学的、組織学的評価を行い、椎間板変性モデルとしての妥当性を検証した。大学動物実験倫理委員会の承認を得て、骨格的に成熟した12週齢の雄性Sprague-Dawleyラット48匹を用い静的圧迫負荷をそれぞれ0、7、28、56日間ずつ加えた。第8/9、9/10尾椎間を圧迫群、第11/12、12/13尾椎間を対照群とした。単純X線像・MRIで持続的な椎間高の狭小化や髄核の輝度変化、組織像で髄核および線維輪の破綻が観察され、多角的な面から臨床所見に矛盾しない経時的な変性の進行が示唆された。また、過去の報告に一致した髄核細胞における細胞外基質の経時的な変動が確認され、椎間板変性モデルとしての妥当性が示唆された。(一社)神緑会, Aug. 2010, 神緑会学術誌, 26, 75 - 76, Japanese[Refereed]
- The rodent static compression loading-induced disc degeneration model still has important gaps among the radiographic, magnetic resonance imaging (MRI), and histological schemes and the acute and chronic expression of catabolic genes such as matrix metalloproteinase (MMP)-3. Our objectives were to assess the validity of a rat tail two-disc static compression model and to elucidate a representative catabolic marker, MMP-3 gene alterations, throughout the degenerative process. Static compression at 1.3 MPa for up to 56 days produced progressive disc height loss in radiographs, lower nucleus intensity on T2-weighted MRIs, and histomorphological degeneration. Real-time RT-PCR mRNA quantification showed significant MMP-3 up-regulation in nucleus pulposus cells from 7 days and a significantly progressive increase as the loading duration lengthened, with high correlations to radiological degenerative scores. Immunohistochemistry demonstrated progressively increased positive staining for MMP-3. These results validate this animal model for disc degeneration research. Progressive mRNA and protein-distributional up-regulations indicate the significant role of MMP-3 and its feasibility as a disc degenerative marker. This model should prove useful for investigating the pathomechanism and for evaluating molecular therapies for degenerative disc disease.Aug. 2010, Journal of orthopaedic research : official publication of the Orthopaedic Research Society, 28(8) (8), 1026 - 32, English, International magazine[Refereed]Scientific journal
- We report a case of sudden onset of late infection after TKA inflamed by anti-TNFalpha therapy, Infliximab, in a 54-year-old woman with RA. Infliximab therapy was started 3 years and 8 months after TKAs as a result of multiple arthritides showing high inflammation of RA. One week after the third administration of Infliximab, the patient suffered sudden knee pain and infectious clinical symptoms, and bacteria (MSSA) were detected by joint effusion culture. She was successfully treated by open debridement with antibiotics-loaded calcium phosphate bone paste and cement and the prostheses were retained. Early diagnosis and operative treatment might be the key to controlling infected TKA without removing the implant. This present case might indicate a serious risk of immunosuppressive effects caused by Infliximab.Jan. 2010, Rheumatology international, 30(3) (3), 405 - 8, English, International magazine[Refereed]Scientific journal
- 日本腰痛学会, Oct. 2009, 日本腰痛学会雑誌, 15(1) (1), 99 - 107, JapanesePossibility of molecular therapy for degenerated disc diseases[Refereed]
- 日本腰痛学会, Oct. 2009, 日本腰痛学会雑誌, 15(1) (1), 199 - 200, Japanese腰痛性疾患に対する分子生物学的アプローチの可能性[Refereed]
- STUDY DESIGN: A case report of the presyrinx state at the craniocervical junction with vanishment of an intramedullary high-signal lesion followed by decompression and fixation. OBJECTIVE: To report the reversible change of an intramedullary high-signal lesion on T2-weighted MRI as a presyrinx state. SUMMARY OF BACKGROUND DATA: The pathology of a T2-weighted high-signal intensity area in the spinal cord has not yet been described in detail. The case presented here showed the vanishment of this lesion after the surgical procedure, which implies that some high-signal intensity lesions might be reversible as a presyrinx state. METHODS: A 75-year-old man presented with severe cervical myelopathy. Neurologic findings and observations on various images indicated compression myelopathy due to both a pseudotumor at the craniocervical junction and spondylosis at C3-C4 disc level due to Klippel-Feil syndrome. The most obvious finding was a vast high-signal intensity lesion at the craniocervical junction, which was speculated to be a syringomyelia before surgery. RESULTS: The MRI at 1 month after surgical treatment (occipito-spinal fusion with the decompression by enlargement of foramen magnum) revealed complete vanishment of the vast high intensity lesion at the craniocervical junction, which remained undetected at the 2 years and 8 months follow-up and corresponded with improvement in the clinical symptoms of myelopathy. CONCLUSION: The vanishment of these signal changes on MRI after surgery was interpreted as a presyrinx state, demonstrating this reversible pathology in the spinal cord.Mar. 2009, Spine, 34(6) (6), E235-9, English, International magazine[Refereed]Scientific journal
- RNA interference (RNAi) technology has recently emerged as an important biological strategy for gene silencing. Previously, the efficacies of RNAi in cultured nucleus pulposus cells in vitro have been reported. However, RNAi in the disc in vivo has never been reported. Therefore, the aims of the present study were to establish a method for RNAi in the disc in vivo and to evaluate the applicability of this technique for endogenous genes in the intervertebral discs using Fas Ligand (FasL) as a representative endogenous gene. To evaluate the efficacy of RNAi in vivo, two reporter luciferase plasmids (Firefly and Renilla) were used. These plasmids and unmodified short interference RNA (siRNA) duplex for targeting Firefly luciferase were co-transfected into coccygeal intervertebral disc of Sprague-Dawley rats in vivo using the ultrasound gene transfer technique. To evaluate the RNAi of the endogenous gene in vivo, siRNAs targeting rat FasL were transfected with the same technique. Non-specific siRNA was used as the negative control. The discs receiving no siRNAs were used as the control. The inhibitory effect of Firefly luciferase against Renilla luciferase was obtained using the results of dual-luciferase assay. Down-regulation of endogenous FasL was calculated by the data from real-time PCR. Our results showed that siRNA for Firefly luciferase can dramatically down-regulate the Firefly luciferase gene expression in vivo compared with Renilla luciferase. The inhibitory effects were maintained for at least 24 weeks and at 24 weeks post transfection, the inhibitory rate was 80% compared with the control group. Furthermore, the siRNA co-transfection group inhibited endogenous FasL expression by 53% compared with the control group. The present study demonstrates long-term down-regulation mediated by unmodified siRNA is possible not only for the exogenous reporter gene, but also for endogenous FasL expression in rat discs in vivo. This application of RNAi might be promising as a local therapy for disc degeneration and associated disorders by down-regulating some of the genes that are harmful for the normal physiology of the disc and may cause disc degeneration.Feb. 2009, European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 18(2) (2), 263 - 70, English, International magazine[Refereed]Scientific journal
- Up-regulation of catabolic gene expression in static compression induced rat-tail disc degeneration model in vivo椎間板圧迫モデルに対し多角的評価を行い、椎間板変性モデルとして妥当性を検証した上で、椎間板変性機序の解明のために長期的な遺伝子変動を経時的に捉えた。12週齢のSprague-Dawleyラットを用いた。第8〜10尾椎体に持続的な圧迫を加え、第8/9尾椎間を圧迫群、第11/12、12/13尾椎間を対照群とした。X線およびMRIでは、持続的な椎間高の狭小化や髄核の輝度変化、組織像では第8/9、9/10尾椎間の圧迫群は第11/12、12/13尾椎間の対照群に比べて髄核および線維輪の破綻を認め、経時的に有意な変性の進行を両群に認めた。matrix metalloproteinase-3(MMP-3)のmRNA発現量は圧迫開始後7日目より上昇し、圧迫群において経時的に有意な発現量の上昇を認めた。以上より椎間板圧迫モデルは椎間板変性モデルとして妥当であり、MMP-3の異化遺伝子群の発現の発現上昇が椎間板変性に重要であることが示唆されたと考えた。(一社)中部日本整形外科災害外科学会, Jan. 2009, 中部日本整形外科災害外科学会雑誌, 52(1) (1), 165 - 166, Japanese[Refereed]
- Disc degeneration is deeply associated with many spinal disorders and thus has a significant clinical impact on society. The currently available surgical treatment often necessitates removing a pathological disc and spinal fusion. However, it is also well known that these surgical treatments have many potential problems including invasion and cost. Therefore, biological approaches for regenerating these pathological discs have received much attention. Gene therapy is one of these biological approaches. Gene therapy involves the transfer of genes to cells so the recipient cells express these genes and thereby synthesize the RNA and protein they encode in a continuous fashion. One of the significant advantages of gene therapy is that we can expect a lasting duration of biological effect which is potentially beneficial for most disc degeneration associated disorders, as they are, by nature, chronic conditions. Originally, gene therapy was mediated by viral vectors, but recent technological progress has enabled us to opt for non-virus-mediated gene therapy for the disc. Furthermore, the development of the RNA interference technique has enabled us to down-regulate a specific gene expression in the disc opening the door for a new generation of intradiscal gene therapy.Dec. 2008, European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 17 Suppl 4(Suppl 4) (Suppl 4), 459 - 66, English, International magazine[Refereed]Scientific journal
- (株)メディカ出版, Apr. 2008, 整形外科看護, 13(4) (4), 372 - 376, Japanese【症状からみる術後合併症 新人ナースのための発見と対応のポイント】牽引・創外固定に伴う合併症 下肢介達牽引中に足関節の背屈ができなくなった[Refereed]
- Clinical Correlation and Magnetic Resonance Diagnosis of Hypermobile Lateral Meniscus finally diagnosed with Arthroscopy1997年以降2005年までに関節鏡視下に半月手術を施行した症例で異常可動性外側半月(HLM)と診断された11例11膝(男6例6膝、女5例5膝、平均26.4歳)(HLM群)と、2005年1年間に関節鏡視にて外側半月とその周囲組織に明らかな異常・損傷のなかった18例18膝(男9例9膝、女9例9膝、平均40.8歳)(対照群)とで、MRI所見を比較検討した。両群ともさらに前十字靱帯(ACL)損傷の有無で分類し、HLM群ではACL損傷合併例(外傷群)3例、単独損傷例(非外傷群)8例、対照群では外傷群7例、非外傷群11例であった。膝窩筋腱溝(PH)幅の比較においては、対照群に比しHLM群、また各群とも非外傷群に比し外傷群で各々PH幅が大きい傾向にあった。Popliteomeniscal fasciculiの不連続性の比較においては、anteroinferior fascicle、posterosuperior fascicleともに不連続所見は対照群に比しHLM群、また各群とも非外傷群に比し外傷群で多かった。HLM、ACL損傷の2要因で分類される多群検定では、anteroinferior fascicleにおいてHLM、ACL損傷の2要因ともに不連続性が明らかに多い傾向が見られた。日本関節鏡学会, Feb. 2008, 関節鏡, 33(1) (1), 73 - 79, Japanese[Refereed]
- 肘部管症候群の病態と手術成績における電気生理学的検討術前に電気生理学的検査として神経伝導速度検査(NCT)を行った肘部管症候群37例について検討した。その結果、病因別に変形性肘関節症(OA)25例、尺骨神経習慣性脱臼7例、ガングリオン3例、上腕骨外顆骨折後偽関節による外反肘2例で、尺骨神経皮下前方移動術を32例に、筋層下移動術を5例に施行した。術前病期分類別では、I期12例、II期0例、III期15例、IV期7例、V期3例で、OA例ではIII例が、習慣性脱臼例ではI期が最も多かった。術後は全例で改善を認めたが、術前病期と共に改善度は低下し、III期以降ではII期以上への改善は5例のみであった。(一社)中部日本整形外科災害外科学会, Jul. 2007, 中部日本整形外科災害外科学会雑誌, 50(4) (4), 711 - 712, Japanese[Refereed]
- 腫瘍との鑑別を要した慢性腰椎硬膜外血腫の1例57歳男。腰背部痛および右臀部から大腿後面にかけての疼痛を主訴とした。慢性腎不全および糖尿病を基礎疾患とし、下肢の知覚は正常であったが、右長母趾伸筋、右長母趾屈筋、腓腹筋が徒手筋力テスト(MMT)4に低下していた。また、血液検査所見で出血傾向は認めなかったが、全身に出血性紫斑病変が出現していた。MRIのT1およびT2強調画像ではL5-S1レベルに高信号で内部に低信号が混在する辺縁明瞭な紡錘型腫瘤がほぼ脊柱管全域を占拠していた。硬膜外腫瘤による右L5-S1神経根障害と診断し、L5椎弓切除・腫瘤摘出術を施行した。腫瘤は病理組織学的にほぼ全層が赤血球で慢性期血腫の診断であった。術直後より右下肢痛は消失し、術後6ヵ月のMRIでは脊柱管内に残存病変、再出血はみられず、術後24ヵ月現在筋力はMMTで4+〜5レベルへ回復している。(株)南江堂, Feb. 2007, 整形外科, 58(2) (2), 165 - 168, Japanese[Refereed]
- Gliding nailing for trochanteric fracturesグライディングネイルを使用して加療した大腿骨転子部骨折44例45股の術後成績を検討した。手術時間は平均39.2分で、術中合併症は認めなかった。釘が容易に刺入できず、慎重にオーバーリーミングすることで刺入が可能となったネイル刺入困難が3例で生じた。ブレードの打ち込み位置は43股が前後像では中央1/3から下部に、側面像では中央1/3の適切な位置に刺入されていたが、初期には不適切な位置へ刺入されたものであった。しかし、このような症例でも良好に経過した。また、ブレードの術後スライディング量は平均5.3mmと適切なスライディングを呈していた。術前に独歩または杖を用いて自立歩行可能であった30例中20例は術後も自立歩行を保てており、比較的術前の活動成績が保てた者が多かった。術後合併症として、カットアウト1例、感染2例、ブレード挿入部の滑膜包炎から皮膚穿孔を生じたもの1例を認めたが、いずれも治癒した。(一社)中部日本整形外科災害外科学会, Nov. 2006, 中部日本整形外科災害外科学会雑誌, 49(6) (6), 1103 - 1104, Japanese[Refereed]
- Diagnosis and Treatment of Hypermobile Lateral Meniscus1997年より現在までに12例の異常可動性外側半月(HLM)を経験した。その臨床像について報告した。対象は男性6例6膝、女性6例6膝で、前十字靱帯(ACL)損傷に合併は3例(ACL損傷群)、9例は単独損傷であった(単独損傷群)。1)ACL損傷群では全例スポーツ外傷により生じていた。単独損傷群でもスポーツ外傷が4例と最多であった。2)正座や横座りからの立ち上がりなど深屈曲時の内外旋動作での疼痛・クリックが全例で認められた。3)7例でMRIのT2強調画像にて後節実質部の後方に関節液と同等の輝度を示す高信号領域が存在していた。明らかなロッキング再発を11例中3例(27.3%)に認めた。4)確定診断には関節鏡視を要し、半月縫合にて一定の成績が得られていても症例に応じた治療法の選択が必要であると考えられた。日本関節鏡学会, Jul. 2006, 関節鏡, 31(2) (2), 35 - 41, Japanese[Refereed]
- THA(人工股関節全置換術)後に肺血栓塞栓症を生じ開心術にて救命し得た1例人工股関節置換術(THA)後,急速に右房内血栓を生じて肺血栓塞栓症(PE)を発症し,緊急開心術により救命し得えた1例を報告した.症例はTHAを受けた69歳女性で,術後6日目の車椅子移乗後に突然胸部痛を訴えた.酸素飽和度(SpO2)は87%まで低下し,血液検査では凝固系の異常が疑われた.酸素を投与したところ,次第に胸部症状は改善し,SpO2も95%まで上昇した.しかし,術後8日目に呼吸状態が悪化し,SpO2は85%に低下した.造影CT,経食道心エコーでは,術後6日目には有意な所見がなかったが,両側肺動脈起始部の巨大血栓と右房内血栓を認めた.下大静脈から右心房内にかけての索状血栓が原因となって生じた肺血栓塞栓症と診断し,開心血栓除去術を行った.術後,血行動態は急速に改善し,術後28日目の肺血流シンチグラフィでは肺血流損傷,血流,換気ミスマッチはみられず,再発を疑わせる所見はなかった.術後約4年が経過したが,胸部症状はない.SpO2の計測がPEの早期発見に有効であった(株)メジカルビュー社, May 2006, 中部日本整形外科災害外科学会雑誌, 25(5) (5), 561 - 565, Japanese[Refereed]
- Pitfalls of treatment for trochanteric fracture using intramedullary nail-risk factors for lag screw cut-out-ラグスクリューを用いた大腿骨転子部骨折治療において,刺入位置や整復に問題はなかったにもかかわらずラグスクリューのカットアウトを生じた症例を3例経験した.3例とも原因は骨折型が「陥入型」であったためと考えられた.「陥入型」とは,従来の安定型・不安定型に関係なく,骨頭が内反して中枢骨片が陥入する,即ちカルカが正面像では外側に,側面像では後方に転位するものである.このタイプの骨折では整復しても骨欠損部が残るために,骨片間の接触による安定性が得られにくく,術後ラグスクリューの過度スライディングが生じる.そして最終的に骨片同士の良好な接触が得られないままスライディングが作用しなくなれば骨頭はラグスクリューのみで把持されることとなり,刺入位置が適切であってものカットアウトのリスクは避けられない(一社)中部日本整形外科災害外科学会, Mar. 2006, 中部日本整形外科災害外科学会雑誌, 49(2) (2), 355 - 356, Japanese[Refereed]
- 橈骨遠位端骨折を契機に発見された原発性副甲状腺機能亢進症の1例62歳女。はしごから転落し受傷した。X線検査で右橈骨遠位端骨折とともに著明な骨萎縮を認めたため骨粗鬆症やその類似疾患などを疑い精査を行った。結果、DXA検査で骨密度の異常低値、血液検査でCaとPTHの高値、尿検査で骨吸収マーカーの異常高値、各種画像検査で左甲状腺下極に腫瘤陰影を認め、副甲状腺の腫大による機能亢進症と診断した。副甲状腺摘出術を施行し、病理診断は腺腫であった。手術後、骨密度は著明に改善し、Ca値・PTH値も正常化した。(社医)愛仁会学術部, Feb. 2006, 愛仁会医学研究誌, 37, 64 - 66, Japanese[Refereed]
- 2椎間の後方進入腰椎椎体間固定術における,自己血貯血の必要性についての検討標記固定術を貯血式自己血輸血+術中回収式自己血輸血で行った11例(A群)と術中・術後回収式自己血輸血で行った7例(B群)の成績を比較した.術中・術後の出血量に有意差は認めなかった.A群では1例で同種血輸血を要し,B群では1例も要しなかった.これらの結果から本固定術において貯血式自己血輸血は不要であると考えられた(一社)日本自己血輸血学会, Aug. 2005, 自己血輸血, 18(1) (1), 16 - 18, Japanese[Refereed]
- 洗浄式自己血回収装置の比較・検討脊椎後方手術23例の術中に洗浄式自己血回収装置2機種(オーソパットとセルセーバーヘモライト2プラス)を交互に使用し,回収血液量,洗浄赤血球液量,血液・生化学的検査値などを比較した.オーソパットを使用したときには洗浄赤血球液量が有意に少なく,ヘマトクリット値,血清カリウム濃度,血清ヘモグロビン濃度が有意に高かった.回収血液量や白血球数には有意差を認めなかった(一社)日本自己血輸血学会, Aug. 2005, 自己血輸血, 18(1) (1), 19 - 23, Japanese[Refereed]
- 関節リウマチでの人工膝関節全置換術における同種血輸血回避の工夫自施設では関節リウマチ(RA)人工膝関節全置換術での同種血輸血回避対策として,術前貯血式自己血輸血,術後回収式自己血輸血,術中の駆血帯使用・トラネキサム酸静注,術後の患肢挙上・弾性包帯使用などを実施している.2004年1年間に26例のRA人工膝関節全置換術を行い,同種血輸血を要したものは1例もなかった(一社)日本自己血輸血学会, Aug. 2005, 自己血輸血, 18(1) (1), 37 - 40, Japanese[Refereed]
- (一社)中部日本整形外科災害外科学会, Jul. 2005, 中部日本整形外科災害外科学会雑誌, 48(4) (4), 794 - 795, JapaneseInfliximab投与中に人工膝関節遅発性感染を来たした1例[Refereed]
- 単椎間後方進入腰椎椎体間固定術における術中回収式自己血輸血腰椎変性すべり症に対してネジ型cageとLumbar Alligator Spinal Systemを用いて1椎間の後方進入腰椎椎体間固定術(PLIF)を行った57例を対象に,平均450gの貯血を行った症例(貯血群)と貯血を行わなかった例(非貯血群)の2群に分けて検討した.その結果,2群間のヘモグロビン値は術後1週間で有意差がなかった.1例において,術前から腎不全を合併して透析への移行が心配されたため同種血輸血を要し,400mlの貯血を行って1椎間PLIFと他の1椎間の開窓術を行い,術中出血量750mlに対して赤血球MAP2単位の同種血輸血を行った.この例の他,新鮮凍結血漿やアルブミン製剤を含め,輸血を行った例はなかった(一社)日本自己血輸血学会, Dec. 2004, 自己血輸血, 17(2) (2), 163 - 165, Japanese[Refereed]
- 2025, 中部日本整形外科災害外科学会雑誌, 68(1) (1)Survey on postpartum pelvic girdle pain: natural course and prognostic aggravating factors
- 2025, 関節外科, 44(4) (4)Indications for surgery for fractures caused by spinal diseases and its results
- 2025, 日本予防理学療法学会学術大会プログラム・抄録集(Web), 11th運動療法が傍脊柱筋の脂肪変性や筋断面積に及ぼす影響
- 2025, 中部日本整形外科災害外科学会雑誌, 68RAPTOR/mTORC1への生体内RNA干渉は椎間板変性抑止効果を示す-ラット尾椎椎間板静的圧迫モデルを用いた検討-
- 2025, 中部日本整形外科災害外科学会雑誌, 68(3) (3)診断に難渋した胸椎くも膜嚢腫を合併した脊髄炎の1例
- 2025, Journal of Spine Research (Web), 16(3) (3)Characteristics of patients per vertebral level of pediatric lumbar spondylolysis
- 2025, Journal of Spine Research (Web), 16(3) (3)Two-year effects of locomotion training-based outpatient rehabilitation on the global sagittal alignment in locomotive syndrome
- 2025, Journal of Spine Research (Web), 16(3) (3)Prospective study of postoperative complications following spinal metastasis surgery in the cancer board registry
- 2025, Journal of Spine Research (Web), 16(3) (3)Transient Receptor Potential Vanilloid 4 activation promotes autophagy and extracellular matrix synthesis in rat intervertebral disc
- 2025, Journal of Spine Research (Web), 16(3) (3)RNA interference of RAPTOR/mTORC1 protects against disc degeneration and improves the microenvironment of degenerated discs in a rat tail
- 2025, Journal of Spine Research (Web), 16(3) (3)Does the surgeon’s experience affect the postoperative outcome of spinal metastasis surgery?
- 2025, Journal of Spine Research (Web), 16(3) (3)A review of clinical features and countermeasures for infection after spine surgery in a satellite hospital: A 10-year retrospective study
- 2025, Journal of Spine Research (Web), 16(3) (3)Locomotion training improves sagittal spinal alignment through reduced fat infiltration and increased volume of paraspinal muscles
- 2025, Journal of Spine Research (Web), 16(3) (3)A review of risk factors for surgical site infection following spine surgery in a single satellite hospital: A 10-year retrospective study
- 2025, Journal of Spine Research (Web), 16(3) (3)The accuracy of freehand insertion of C1 lateral mass screw and C2 pedicle screw for pediatric atlantoaxial instability
- 2025, Journal of Spine Research (Web), 16(3) (3)Safety of pedicle screw insertion into metastatic vertebral bodies during posterior fusion surgery for metastatic spinal tumors
- 2025, Journal of Spine Research (Web), 16(3) (3)Predictors of change in the size of retro-odontoid pseudotumor after C1 laminectomy
- 2025, 日本整形外科学会雑誌(CD-ROM), 99(3) (3)遺伝子治療による椎間板の恒常性維持を目指した変性予防へのアプローチ
- 2025, 日本整形外科学会雑誌(CD-ROM), 99(3) (3)高齢者がん脊椎転移手術において予後予測に対するフレイルの影響
- 2025, 日本整形外科学会雑誌(CD-ROM), 99(3) (3)ロコモ患者へのロコトレ外来通院リハビリテーション介入による全脊柱矢状面アライメント改善効果-2年間の前向き追跡調査-
- 2024, 整形・災害外科, 67(7) (7)Surgery for metastatic spinal tumor
- 2024, 日本整形外科学会雑誌, 98(2) (2)歯突起後方偽腫瘍における頚椎X線像評価-3大学多施設共同研究-
- 2024, 日本リウマチ学会総会・学術集会プログラム・抄録集, 68thリウマチ性頚椎不安定性に対する手術の進化と未来展望-10年以上の多施設前向き追跡調査結果からの検討-
- 2024, 日本整形外科学会雑誌, 98(2) (2)軸椎歯突起後方偽腫瘍の発症メカニズムについて-3大学多施設共同研究-
- 2024, 日本整形外科学会雑誌, 98(2) (2)環軸椎亜脱臼症例における歯突起後方偽腫瘍発生リスク因子の検討-3大学多施設共同研究-
- 2024, 日本整形外科学会雑誌, 98(2) (2)ロコモ患者へのロコトレ通院リハビリテーションによる傍脊柱筋の脂肪変性・筋量改善効果-2年間の前向き追跡調査-
- 2024, 日本整形外科学会雑誌, 98(2) (2)放射線治療施行後に脊椎転移手術が必要となった症例の検討-術後創離開リスク低減のために-
- 2024, 日本整形外科学会雑誌, 98(3) (3)80歳以上脊椎転移患者に対する手術成績-216例の前向き検討-
- 2024, 日本整形外科学会雑誌, 98(3) (3)腎癌脊椎転移に対する手術成績
- 2024, 日本整形外科学会雑誌, 98(3) (3)脊椎転移手術とフレイルの関連-mFI-5を用いた検討-
- 2024, 日本整形外科学会雑誌, 98(3) (3)脊椎転移手術における原発巣悪性度別手術成績比較
- 2024, 日本整形外科学会雑誌, 98(3) (3)脊椎転移に対する手術療法の予後延長効果
- 2024, Journal of Spine Research (Web), 15(6) (6)Risk factors for postoperative complications following spinal metastasis surgery
- 2024, 日本整形外科学会雑誌, 98(3) (3)転移性脊椎腫瘍に対する緊急手術成績と緊急手術に至るリスク因子の前向き検討
- 2024, 日本整形外科学会雑誌, 98(3) (3)ロコモ患者へのロコトレ通院リハビリテーション介入による脊椎骨盤矢状面アライメント改善効果-2年間の前向き追跡調査-
- 2024, Journal of Spine Research (Web), 15(3) (3)Surgical outcome of spine surgery for symptomatic spinal metastasis
- 2024, Journal of Spine Research (Web), 15(3) (3)Selective RNA interference of Raptor/mTORC1 protects against disc degeneration in a rat tail temporary static compression model
- 2024, Journal of Spine Research (Web), 15(3) (3)The prediction of early mortality after spinal metastasis surgery with preoperative blood test
- 2024, Journal of Spine Research (Web), 15(3) (3)Surgical outcomes of, and risk factors for emergency surgery in patients with spinal metastases: A prospective cohort study
- 2024, Journal of Spine Research (Web), 15(3) (3)Predictors for the incidence of cervical spine instabilities in rheumatoid arthritis: an over 10-year prospective multicenter cohort study
- 2024, Journal of Spine Research (Web), 15(3) (3)Risk factors for recurrence after conservative treatment in pediatric lumbar spondylolysis at L5
- 2024, Journal of Spine Research (Web), 15(3) (3)Radiographic degenerative characteristics of the cervical spine in patients with the retro-odontoid pseudotumor
- 2024, Journal of Spine Research (Web), 15(3) (3)Development of gene therapy strategies for preventing degenerative disc disease through homeostasis maintenance
- 2024, Journal of Spine Research (Web), 15(3) (3)Comparison of surgical outcomes in metastatic spine tumors according to the grade of the primary site
- 2024, Journal of Spine Research (Web), 15(3) (3)Multicenter study of the pathogenesis of retro-odontoid pseudotumor in patients with atlantoaxial subluxation
- 2024, Journal of Spine Research (Web), 15(3) (3)Surgical Outcomes and Global Alignment Changes in Adolescent Patients with High Dysplastic Developmental Spondylolisthesis
- 2024, Journal of Spine Research (Web), 15(3) (3)The pathogenesis of retro-odontoid pseudotumor
- 2024, Journal of Spine Research (Web), 15(3) (3)Targeting mTOR signaling with RNA interference and CRISPR-Cas9 systems is a new biological intervention to intervertebral disc degeneration
- 2024, Journal of Spine Research (Web), 15(3) (3)Treatment strategy for degenerative spine disease with chronic low back pain: medication, rehabilitation, and future preventive intervention
- 2024, 中部日本整形外科災害外科学会雑誌, 67脊椎転移に対する手術療法の予後延長効果
- 2024, Journal of Spine Research (Web), 15(3) (3)Effects of locomotion training-based outpatient rehabilitation on the fat infiltration ratio and cross-sectional area of paraspinal muscles
- 2024, Journal of Spine Research (Web), 15(3) (3)Relationships between surgical outcomes and frailty of metastatic spine tumors
- 2024, Journal of Spine Research (Web), 15(3) (3)Effects of locomotion training-based rehabilitation on the spinopelvic alignment in locomotive syndrome: a 2-year prospective cohort study
- 2024, 関節外科, 43(12) (12)When and how should metastatic spinal tumors be treated?
- 2024, 脊椎脊髄ジャーナル, 37(10) (10)Minimally Invasive Spine Stabilization for Spinal Metastasis
- 2024, 中部日本整形外科災害外科学会雑誌, 67小児上位腰椎分離症の特徴
- 2024, 中部日本整形外科災害外科学会雑誌, 67RAPTOR/mTORC1への生体内RNA干渉はラット尾椎椎間板において椎間板変性抑止作用を示す
- 2024, 中部日本整形外科災害外科学会雑誌, 67リウマチ患者頚椎不安定性新規発生のリスク因子-10年以上前向き多施設共同研究-
- 2024, 中部日本整形外科災害外科学会雑誌, 67椎間板のTransient Receptor Potential Vanilloid4阻害によるオートファジー活性と細胞外基質合成の抑制
- 2024, 中部日本整形外科災害外科学会雑誌, 67体幹装具採型における石膏包帯使用時と3Dデジタルスキャナ使用時の適合性の比較
- 2024, 中部日本整形外科災害外科学会雑誌, 67ロコモ患者に対するロコトレ通院リハビリテーションが傍脊柱筋に及ぼす効果について
- 2024, 中部日本整形外科災害外科学会雑誌, 67胸髄くも膜嚢腫による胸髄症との鑑別を要した視神経脊髄炎の1例
- 2024, DDS再生医療研究会・多血小板血漿(PRP)療法研究会プログラム・抄録集(Web), 14th-16th化膿性椎間板炎に対するゼラチンハイラジゲルを用いた新たなる治療法の開発
- 2024, 日本側彎症学会演題抄録集, 58th (CD-ROM)The accuracy of freehand insertion of C1 lateral mass screw and C2 pedicle screw for pediatric atlantoaxial instability
- 2024, Japanese Journal of Rehabilitation Medicine (Web), 61(Autumn) (Autumn)高齢者がん脊椎転移手術におけるフレイルの予後予測に対する影響
- 2024, 日本整形外科学会雑誌(CD-ROM), 98(6) (6)高齢者脊椎転移手術においてフレイルは生命予後予測因子である
- 2024, 中部日本整形外科災害外科学会雑誌, 67経皮的椎弓根スクリュー挿入におけるスマートグラスの有用性
- 2024, 中部日本整形外科災害外科学会雑誌, 67ロコトレ通院リハビリテーションによるロコモ患者の全脊柱矢状面アライメント改善効果-2年間の前向き調査-
- 2024, 日本整形外科学会雑誌(CD-ROM), 98(8) (8)Transient receptor potential vanilloid4(TRPV4)活性化はラット椎間板のオートファジーと細胞外基質合成を促進する
- 2024, 中部日本整形外科災害外科学会雑誌, 67Separation surgeryの効果と限界
- 2024, 日本整形外科学会雑誌(CD-ROM), 98(8) (8)椎間板の恒常性維持を目指した遺伝子治療による変性予防へのアプローチ
- 2024, 中部日本整形外科災害外科学会雑誌, 67前方開大型エクスパンダブルケージを用いた腰椎前弯再建・側弯矯正の試み
- 2024, 日本整形外科学会雑誌(CD-ROM), 98(8) (8)RNA干渉法とCRISPR-Cas9を用いたmTORシグナル経路の選択的阻害による椎間板保護作用の比較検討
- 2024, 中部日本整形外科災害外科学会雑誌, 67精巣癌の多発転移に対して,脊椎骨全摘出術を施行した一例
- 2024, 日本整形外科学会雑誌(CD-ROM), 98(8) (8)ラット椎間板におけるtransient receptor potential vanilloid4(TRPV4)阻害がオートファジーと細胞外基質合成を抑制する
- 2024, 中部日本整形外科災害外科学会雑誌, 67脊椎転移手術とフレイルの関連についてmFI-5を用いた検討
- 2024, 中部日本整形外科災害外科学会雑誌, 67早期発症側弯症を呈するLarsen症候群の患児に対しShilla法による成長温存手術を行い最終固定に至った2例
- 2024, 日本整形外科学会雑誌(CD-ROM), 98(8) (8)ラット椎間板髄核細胞に対するカチオン化ゼラチンナノ粒子を用いたRaptorを標的とした徐放型RNA干渉の有用性
- 2024, 日本整形外科学会雑誌(CD-ROM), 98(8) (8)RAPTOR/mTORC1への生体内RNA干渉はラット椎間板において椎間板変性抑止作用を示す
- 2023, 緩和ケア, 33Orthopedic treatment options for intractable pain
- 2023, 日本再生医療学会総会(Web), 22nd難治性骨軟部疾患に対するゼラチンハイドロゲルを用いた新たなる治療法の開発
- 2023, 脊椎脊髄ジャーナル, 36(1) (1)Autophagy during Intervertebral Disc Degeneration
- 2023, 日本整形外科学会雑誌, 97(3) (3)「ロコモ」患者の脊柱・骨盤・下肢アライメントにおける「ロコトレ」リハビリテーション介入効果-2年以上の前向き追跡調査-
- 2023, Journal of Spine Research (Web), 14(3) (3)Posterior decompression and fusion for symptomatic spinal metastasis enables postoperative chemotherapy.
- 2023, Journal of Spine Research (Web), 14(3) (3)Transient Receptor Potential Vanilloid 4 (TRPV4) knockdown suppresses autophagy in rat intervertebral disc cells
- 2023, Journal of Spine Research (Web), 14(3) (3)Selective interference of Raptor/mTORC1 is protective against intervertebral disc degeneration through autophagy induction in rat tails
- 2023, Journal of Spine Research (Web), 14(3) (3)Risk factors for wound dehiscence after spinal metastasis surgery and a new approach to prevention-Curved Skin Incision-
- 2023, Journal of Spine Research (Web), 14(3) (3)Autofusion at Costovertebral Joints after Posterior Fusion for Adolescent Idiopathic Scoliosis-CT at 10 years after surgery
- 2023, Journal of Spine Research (Web), 14(3) (3)Development of treatment for degenerative disc disease by selective interference of the mTOR signaling pathway using the CRISPR-Cas9 system
- 2023, Journal of Spine Research (Web), 14(3) (3)Efficacy of Smart Glasses for Percutaneous Pedicle Screw Insertion
- 2023, Journal of Spine Research (Web), 14(3) (3)The efficacy of Adiponectin receptor agonist AdipoRon on rat tail puncture models
- 2023, Journal of Spine Research (Web), 14(3) (3)Clinical Outcomes of Posterior Fusion for Atlantoaxial Instability (AAI) in Children with Non-Down Syndrome
- 2023, Journal of Spine Research (Web), 14(3) (3)転移性脊椎腫瘍に対する姑息的手術の成績
- 2023, Journal of Spine Research (Web), 14(3) (3)Effects of locomotion training on the spine-pelvis-lower extremity alignment in locomotive syndrome: a prospective>2-year cohort study
- 2023, Journal of Spine Research (Web), 14(3) (3)Risk factors for nonunion of spondylolysis in the upper lumbar spine
- 2023, Journal of Spine Research (Web), 14(3) (3)Prospective study for risk factors of postoperative complication of surgery for spinal metastases
- 2023, Journal of Spine Research (Web), 14(3) (3)Transient Receptor Potential Vanilloid 4 activation promotes autophagy and extracellular matrix synthesis in rat intervertebral disc cells
- 2023, Journal of Spine Research (Web), 14(3) (3)A retrospective study about the possibility to avoid preoperative radiotherapy for the patients of spinal metastasis surgery
- 2023, 日本整形外科学会雑誌, 97(3) (3)80歳以上の超高齢脊椎転移患者に対する脊椎転移手術の治療成績の検討-70歳未満の脊椎転移患者と比較して-
- 2023, 日本整形外科学会雑誌, 97(3) (3)転移性脊椎腫瘍手術における術後合併症リスク因子の検討
- 2023, Journal of Spine Research (Web), 14(3) (3)Long-term Results of Pedicle Screw Fixation for Patients with Adolescent Idiopathic Scoliosis: CT evaluation at 10 Years after Surgery
- 2023, 日本整形外科学会雑誌, 97(6) (6)脊椎転移手術における悪性度別手術成績比較
- 2023, 日本軟骨代謝学会プログラム・抄録集, 35thCRISPR-Cas9 versus RNA interference for degenerative disc disease treatment by the selective inhibition of mTOR signaling
- 2023, 日本整形外科学会雑誌, 97(8) (8)ラット椎間板におけるTransient Receptor Potential Vanilloid 4(TRPV4)阻害はオートファジーと細胞外基質合成を抑制する
- 2023, 日本整形外科学会雑誌, 97(8) (8)RNA干渉法とCRISPR-Cas9システムを用いたmTORシグナル経路の選択的阻害がもたらすヒト椎間板変性抑止効果の比較
- 2023, 日本整形外科学会雑誌, 97(8) (8)mTORシグナル経路への選択的なRNA干渉はラット尾椎椎間板組織において変性抑止効果を有する
- 2023, 日本整形外科学会雑誌, 97(8) (8)Transient receptor potential vanilloid 4(TRPV4)活性化によるラット椎間板髄核細胞のオートファジーと細胞外基質合成の促進
- 2023, 中部日本整形外科災害外科学会雑誌, 66硬膜欠損を伴う脳表ヘモジデリン沈着症に対して硬膜閉鎖術を行った1例
- 2023, 日本脊椎インストゥルメンテーション学会抄録集, 32nd脊椎転移に対する手術療法の予後延長効果
- 2023, Japanese Journal of Rehabilitation Medicine, 60(Supplement) (Supplement)症候性脊椎転移に対する後方除圧固定術は術後化学療法の継続/導入を可能にする
- 2023, Japanese Journal of Rehabilitation Medicine, 60(Autumn) (Autumn)脊柱アライメントの改善がロコモ度に及ぼす影響
- 2023, 中部日本整形外科災害外科学会雑誌, 66脊椎転移手術における術後合併症発生リスクの前向き検討
- 2022, 中部日本整形外科災害外科学会雑誌, 65(1) (1)Treatment of cervical spondylotic myelopathy caused by Mccune-Albright syndrome associated with fibrous dysplasia, C1-7 laminectomy
- 2022, 日本整形外科学会雑誌, 96(2) (2)椎間板再生の基礎と臨床(未来)
- 2022, 中部日本整形外科災害外科学会雑誌, 65(3) (3)頚胸椎後縦靭帯骨化症術後に生じた滲出液産生腫瘤の1例
- 2022, 中部日本整形外科災害外科学会雑誌, 65馬尾生検により確定診断に至った原発性馬尾神経悪性リンパ腫の一例
- 2022, 日本整形外科学会雑誌, 96(3) (3)「ロコモ」患者における「ロコトレ」体操の脊柱アライメント・立位バランス改善効果
- 2022, 中部日本整形外科災害外科学会雑誌, 65頚胸椎後縦靭帯骨化症後方術後に生じた滲出液産生腫瘤の1例 コロコロの正体
- 2022, 中部日本整形外科災害外科学会雑誌, 65転移性脊椎腫瘍に対する集学的治療の効果と限界
- 2022, Journal of Spine Research (Web), 13(3) (3)Risk factors of recurrent lumbar disk herniation after microendoscopic discectomy
- 2022, Journal of Spine Research (Web), 13(3) (3)The retrospective study about the outcome of spinal metastasis surgery for patients aged 80 years or older
- 2022, Journal of Spine Research (Web), 13(3) (3)Prospective study for risk factors of postoperative complication for spinal metastases
- 2022, Journal of Spine Research (Web), 13(3) (3)Improved sagittal spinal alignment and stabilometric body balance by “locomotion training” exercises in patients with “locomotive syndrome”
- 2022, Journal of Spine Research (Web), 13(3) (3)GCIB improved the pullout strength of PEEK pedicle screw
- 2022, Journal of Spine Research (Web), 13(3) (3)Polyethylene tapes at the proximal end of fusion reduce the revision rate related with proximal junctional kyphosis in long spinal fusions
- 2022, Journal of Spine Research (Web), 13(3) (3)Efficacy of growth differentiation factor-6 for intervertebral disc using a rat tail puncture model
- 2022, Journal of Spine Research (Web), 13(3) (3)Comparison in the accuracy of thoracolumbosacral orthosis by a conventional casting with a plaster bandage versus by a 3D scanning technique
- 2022, Journal of Spine Research (Web), 13(3) (3)Effects of Adiponectin receptor agonist AdipoRon on intervertebral disc cell
- 2022, 日本整形外科学会雑誌, 96(8) (8)椎間板におけるTRPV4のオートファジーと細胞外マトリクス合成への関与
- 2022, 日本整形外科学会雑誌, 96(8) (8)体幹コルセット採型における石膏包帯使用時と3Dデジタルスキャナ使用時の精度の比較
- 2022, 日本整形外科学会雑誌, 96(8) (8)アディポネクチン受容体アゴニストAdipoRonの椎間板変性へ与える影響に関する研究
- 2022, 日本整形外科学会雑誌, 96(12) (12)The analysis of cost-utility of multidisciplinary treatment for spinal metastasis
- 2022, 日本整形外科学会雑誌, 96(8) (8)椎間板恒常性維持を目指した変性予防・組織修復の試み
- 2022, 整形外科バイオマテリアル研究会プログラム・抄録集, 41st椎間板再生用新規コラーゲン材料の性能評価における実験動物からヒトへの応用展開を指向した力学シミュレーション
- 2022, 中部日本整形外科災害外科学会雑誌, 65脊椎転移手術後全身状態早期悪化症例の検討-術前血液検査結果からみた危険因子-
- 2021, 日本整形外科学会雑誌, 95(2) (2)脊椎転移に対する集学的治療の効果と限界
- 2021, 中部日本整形外科災害外科学会雑誌, 64(5) (5)Involvement of Atg5-dependent autophagy in the maintenance of rat intervertebral disc homeostasis: in-vitro and in-vivo study
- 2021, 整形外科, 72(6) (6)Improvement of the sagittal spinal alignment and body balance by a “locomotion training” based rehabilitation program in patients with “locomotive syndrome”
- 2021, 日本整形外科学会雑誌, 95(2) (2)費用対効用から見た脊椎転移に対する手術加療の効果と課題
- 2021, 日本整形外科学会雑誌, 95(3) (3)広範囲矯正固定手術における固定近位端のポリエチレンテープの使用はproximal junctional kyphosisに伴う再手術率を低下させる
- 2021, 日本整形外科学会雑誌, 95(3) (3)「ロコモ」患者へ「ロコトレ」体操が及ぼす脊柱アライメントと立位バランスの改善効果
- 2021, 日本整形外科学会雑誌, 95(3) (3)術前血液検査結果から見た脊椎転移手術後全身状態早期悪化の危険因子の検討
- 2021, Journal of Spine Research (Web), 12(3) (3)Minimally invasive transforaminal lumbar interbody fusion for isthmic spondylolisthesis: Comparison between decompression with and without resection of fibrocartilage tissue
- 2021, Journal of Spine Research (Web), 12(3) (3)Trends and measures against postoperative wound dehiscence after surgery for spinal metastasis
- 2021, Journal of Spine Research (Web), 12(3) (3)The use of polyethylene tapes reduces the revision rate associated with Proximal Junctional Kyphosis in long spinal fusions
- 2021, Journal of Spine Research (Web), 12(3) (3)Investigation of risk factors for postoperative correction loss after minimum invasive surgery-transforaminal lumbar interbody fusion (MIS-TLIF) for lumbar degenerative spondylolisthesis
- 2021, Journal of Spine Research (Web), 12(3) (3)Improvement of the sagittal alignment of the spine and standing body balance through “locomotion training” exercise in patients with “locomotive syndrome”
- 2021, Journal of Spine Research (Web), 12(3) (3)Levels of autophagy in lumbar degenerative and herniated discs depend on the patients’ age and degeneration grade rather than on the type of disease
- 2021, Journal of Spine Research (Web), 12(3) (3)The efficacy of growth differentiation factor-6 on the three-dimensionally cultured human intervertebral disc cells and rat tail puncture model
- 2021, Journal of Spine Research (Web), 12(3) (3)Involvement of Atg5-dependent autophagy in maintaining rat intervertebral disc homeostasis
- 2021, Journal of Spine Research (Web), 12(3) (3)Effect of Adiponectin receptor agonist AdipoRon on human intervertebral disc cell in a three-dimensional cell cultur
- 2021, Journal of Spine Research (Web), 12(3) (3)The issue of CT scanning assessing body heeling for pediatric lumbar spondylolysis in terms of radiation exposure
- 2021, Journal of Spine Research (Web), 12(3) (3)Fatigue fractures of the sacrum in an adolescent
- 2021, 日本脊椎インストゥルメンテーション学会抄録集, 30thGCIB照射がPEEK製椎弓根スクリューの引き抜き強度に与える影響
- 2021, 日本整形外科学会雑誌, 95(8) (8)三次元細胞培養を用いたアディポネクチン受容体アゴニストAdipoRon投与に対するヒト椎間板細胞へ与える影響の検討
- 2021, 中部日本整形外科災害外科学会雑誌, 64広範囲矯正固定手術において固定近位端でのポリエチレンテープの使用はPJKに伴う再手術率を低下させる
- 2021, 中部日本整形外科災害外科学会雑誌, 64当院における脊椎転移術後創離開のリスク因子の検討と予防のための新たな試み-Curved Skin Incision-
- 2021, 中部日本整形外科災害外科学会雑誌, 64Mccune Albright症候群に伴う線維性骨異形成に起因した頚椎症性脊髄症に対して椎弓切除術を実施した一例
- 2021, 中部日本整形外科災害外科学会雑誌, 64転移性脊椎腫瘍に対する手術の効果と限界
- 2021, 日本整形外科学会雑誌, 95(8) (8)細胞低接着性コラーゲン(low adhesive scaffold collagen:LASCol)を用いた脊椎椎間板組織修復の試み
- 2020, 日本整形外科学会雑誌, 94(2) (2)筋ジストロフィーに伴う脊柱変形の手術経験
- 2020, 日本整形外科学会雑誌, 94(2) (2)Long fusionにおける固定近位端の固定法の違いによるproximal junctional kyphosis(PJK)に伴う再手術率の比較検討
- 2020, 関節の外科, 47(2) (2)リウマチ性頚椎不安定性の進行と予後予測因子:10年以上に及ぶ前向き追跡調査結果
- 2020, 日本整形外科学会雑誌, 94(6) (6)ゼラチンハイドロゲルを用いた徐放化シスプラチン局所投与による新たなる骨転移治療
- 2020, 日本整形外科学会雑誌, 94(8) (8)ラット椎間板の恒常性維持におけるAtg5依存性オートファジーの関与
- 2020, 日本整形外科学会雑誌, 94(8) (8)GCIB照射がPEEK製椎弓根スクリューの引き抜き強度に与える影響
- 2020, 日本整形外科学会雑誌, 94(8) (8)三次元培地を用いた成長因子growth differentiation factor-6投与がヒト椎間板細胞に与える影響の検討-
- 2020, 多血小板血漿(PRP)療法研究会プログラム・抄録集, 12thがん骨転移局所制御に対する徐放化抗がん剤の有効性と安全性についての検討
- 2020, 日本側彎症学会演題抄録集, 54thSurgical Site Infection following Primary Definitive Fusion for Pediatric Spinal Deformity: A Multicenter Study of Rates, Risk Factors, and Pathogens
- 2020, 日本側彎症学会演題抄録集, 54thIncidence and risk factors for unplanned return to the operating room following primary definitive fusion surgery for pediatric spinal deformity
- 2020, 日本側彎症学会演題抄録集, 54thIncidence and characteristics of instrument-related complications in definitive fusion for pediatric spine deformity: a retrospective review of 1493 patients
- 2020, 日本側彎症学会演題抄録集, 54thIncidence and risk factor of neurological deficit associated with primary definitive fusion for pediatric spinal deformity
- 2020, Journal of Spine Research (Web), 11(3) (3)The retrospective study about early deterioration of general condition after spinal metastasis surgery: A study focusing on the results of their preoperative blood test
- 2020, Journal of Spine Research (Web), 11(3) (3)The efficacy of Growth differentiation factor-6 on human intervertebral disc nucleus pulposus cells cultured in threedimensional culture system
- 2020, Journal of Spine Research (Web), 11(3) (3)Knacks of surgical treatment for severe RA cervical spine with poor bone quality
- 2020, Journal of Spine Research (Web), 11(3) (3)A novel new therapy for spinal metastases by sustained release system of cisplatin
- 2020, Journal of Spine Research (Web), 11(3) (3)Surgical outcome for cervical spinal metastases and analysis of risk factor of poor outcome
- 2020, Journal of Spine Research (Web), 11(3) (3)Use of polyethylene tapes at the proximal end of fusion constructs reduces the revision surgery rates associated with Proximal Junctional Kyphosis (PJK) in long spinal fusions.
- 2020, Journal of Spine Research (Web), 11(3) (3)Development and predictive risk factors of cervical spine instabilities in rheumatoid arthritis: a series of prospective multicenter over 5-year and 10-year cohort studies
- 2020, Journal of Spine Research (Web), 11(3) (3)Lumbosacral Stabilization of Sacral Fractures Using Sacral-Aral-Iliac Screw: Technique a Medium to Long Term Results
- 2020, Journal of Spine Research (Web), 11(3) (3)Involvement of Atg5-dependent autophagy in homeostasis maintenance of rat intervertebral discs
- 2020, 中部日本整形外科災害外科学会雑誌, 63筋ジストロフィーに伴う脊柱変形の手術経験
- 2020, 中部日本整形外科災害外科学会雑誌, 63脊椎転移手術における全身状態早期悪化例に関する検討
- 2020, 日本整形外科学会雑誌, 94(3) (3)「ロコトレ」体操が及ぼす「ロコモ」患者の脊柱アライメントと体幹バランス改善効果
- 2020, Journal of Spine Research (Web), 11(3) (3)Adverse liver and kidney effects of analgesics for chronic low back pain: a nationwide multicenter prospective cohort study by the Japanese Society for Spine Surgery and Related Research
- (一社)中部日本整形外科災害外科学会, Sep. 2019, 中部日本整形外科災害外科学会雑誌, 62(秋季学会) (秋季学会), 186 - 186, Japanese治療に難渋したアテトーゼ型脳性麻痺性頸髄症の1例
- (公社)日本整形外科学会, Sep. 2019, 日本整形外科学会雑誌, 93(8) (8), S1883 - S1883, Japanese徐放化抗がん剤局所投与による新たなる骨転移制御の試み
- (公社)日本整形外科学会, Sep. 2019, 日本整形外科学会雑誌, 93(8) (8), S1645 - S1645, Japanese腰椎椎間板におけるオートファジー活性は疾患よりも年齢と変性度に依存する
- (公社)日本整形外科学会, Sep. 2019, 日本整形外科学会雑誌, 93(8) (8), S1649 - S1649, Japaneseラット脊椎椎間板の恒常性維持におけるAtg5依存性オートファジーの関与
- (公社)日本整形外科学会, Sep. 2019, 日本整形外科学会雑誌, 93(8) (8), S1798 - S1798, Japanese腰痛研究最前線:基礎から臨床へ オートファジーの制御による椎間板変性治療の可能性
- (公社)日本整形外科学会, Jun. 2019, 日本整形外科学会雑誌, 93(6) (6), S1426 - S1426, Japaneseゼラチンハイドロゲルを用いた徐放化抗がん剤局所投与による骨転移制御
- 日本外科系連合学会, May 2019, 日本外科系連合学会誌, 44(3) (3), 534 - 534, Japanese骨転移癌の治療選択-キャンサーボードの運用について- 脊椎転移に対する集学的治療は予後を延長させる
- (公社)日本リハビリテーション医学会, May 2019, The Japanese Journal of Rehabilitation Medicine, 56(特別号) (特別号), 3 - 3, Japanese「ロコトレ」理学療法プログラムによる「ロコモ」患者の脊柱アライメントと体幹バランス改善効果
- (公社)日本リハビリテーション医学会, May 2019, The Japanese Journal of Rehabilitation Medicine, 56(特別号) (特別号), 3 - 3, Japanese認知機能がロコモ度に及ぼす影響について
- (公社)日本リハビリテーション医学会, May 2019, The Japanese Journal of Rehabilitation Medicine, 56(特別号) (特別号), 3 - 14, Japanese「ロコトレ」理学療法プログラムによる「ロコモ」患者の脊柱アライメントと体幹バランス改善効果
- (一社)中部日本整形外科災害外科学会, Mar. 2019, 中部日本整形外科災害外科学会雑誌, 62(春季学会) (春季学会), 123 - 123, Japanese70歳以上の脊椎転移患者における手術成績
- (公社)日本整形外科学会, Mar. 2019, 日本整形外科学会雑誌, 93(3) (3), S627 - S627, Japanese「ロコトレ」体操による「ロコモ」患者の脊柱アライメントと体幹バランス改善効果
- (公社)日本整形外科学会, Mar. 2019, 日本整形外科学会雑誌, 93(3) (3), S1057 - S1057, Japanese70歳以上の脊椎転移患者における手術効果とその経時的推移
- (公社)日本整形外科学会, Mar. 2019, 日本整形外科学会雑誌, 93(3) (3), S1073 - S1073, Japanese脊椎転移の症候化リスク因子に関する前向き研究
- (一社)日本脊椎脊髄病学会, Mar. 2019, Journal of Spine Research, 10(3) (3), 210 - 210, Japanese症候性側彎症手術における電磁気センサー付き椎弓根プローブの有用性
- (一社)日本脊椎脊髄病学会, Mar. 2019, Journal of Spine Research, 10(3) (3), 268 - 268, Japanese70歳以上の転移性脊椎腫瘍患者における手術成績
- (一社)日本脊椎脊髄病学会, Mar. 2019, Journal of Spine Research, 10(3) (3), 316 - 316, Japanese術後10年以上に経過観察しえた胸腰椎・腰椎部先天性後側彎症・後彎症における16症例の立位矢状面バランスの検討
- (一社)日本脊椎脊髄病学会, Mar. 2019, Journal of Spine Research, 10(3) (3), 318 - 318, Japanese筋ジストロフィーに伴う脊柱変形の手術経験
- (一社)日本脊椎脊髄病学会, Mar. 2019, Journal of Spine Research, 10(3) (3), 348 - 348, Japanese腰椎変性すべり症に対する術後合併椎体間固定術と後方椎体間固定術の手術成績 多施設比較検討
- (一社)日本脊椎脊髄病学会, Mar. 2019, Journal of Spine Research, 10(3) (3), 406 - 406, Japanese動的圧迫負荷による脊索由来細胞の変化とintegrinα5β1の果たす役割
- (一社)日本脊椎脊髄病学会, Mar. 2019, Journal of Spine Research, 10(3) (3), 596 - 596, Japanese成人脊柱変形手術において多椎間TLIFとPonte osteotomyのみで十分な腰椎前彎を獲得できるか?
- (一社)日本脊椎脊髄病学会, Mar. 2019, Journal of Spine Research, 10(3) (3), 609 - 609, Japanese脊椎椎間板におけるオートファジー活性は疾患よりも年齢と変性度に依存する 腰椎椎間板ヘルニア検体と固定術検体との比較
- (一社)日本脊椎脊髄病学会, Mar. 2019, Journal of Spine Research, 10(3) (3), 644 - 644, Japanese脊椎インスツルメント術後創部感染に対する局所閉鎖陰圧療法の有用性と失敗因子の検討
- (一社)日本脊椎脊髄病学会, Mar. 2019, Journal of Spine Research, 10(3) (3), 668 - 668, Japanese脊椎転移手術における早期成績不良例に関する検討
- (一社)日本脊椎脊髄病学会, Mar. 2019, Journal of Spine Research, 10(3) (3), 670 - 670, Japanese骨転移Cancer Boardの効果と課題
- (一社)日本脊椎脊髄病学会, Mar. 2019, Journal of Spine Research, 10(3) (3), 679 - 679, JapanesemTOR阻害薬テムシロリムスはAktとオートファジーの誘導しヒト椎間板髄核細胞に保護作用を来す
- (一社)日本脊椎脊髄病学会, Mar. 2019, Journal of Spine Research, 10(3) (3), 702 - 702, Japanese「ロコトレ」リハビリプログラムによる「ロコモ」患者の脊柱アライメントと体幹バランス改善効果
- (一社)日本脊椎脊髄病学会, Mar. 2019, Journal of Spine Research, 10(3) (3), 269 - 269, Japanese転移性脊椎腫瘍に対する手術加療の費用対効用を低下させる因子の検討
- (一社)日本脊椎脊髄病学会, Mar. 2019, Journal of Spine Research, 10(3) (3), 269 - 269, Japanese転移性脊椎腫瘍に対する手術加療の費用対効用を低下させる因子の検討
- 2019, 多血小板血漿(PRP)療法研究会プログラム・抄録集, 11thゼラチンハイドロゲルを用いた徐放化シスプラチン局所投与によるがん骨転移局所制御
- (株)メディカルレビュー社, Dec. 2018, Anti-aging Science, 10(1) (1), 87 - 87, Japaneseエイジングによる骨脆弱化と脊柱変形に対する対策 ロコモ体操による脊柱アライメント改善効果 手術によらない脊柱変形改善の試み
- 日本バイオマテリアル学会, Nov. 2018, 日本バイオマテリアル学会大会予稿集(Web), 40回, 216 - 216, Japanese椎間板組織再生のための細胞低接着性コラーゲンゲルの開発
- (一社)日本関節病学会, Oct. 2018, 日本関節病学会誌, 37(3) (3), 214 - 214, Japanese関節リウマチの脊椎病変 リウマチ性頸椎不安定性の進行と予後予測因子 10年以上の前向き追跡調査結果
- (公社)日本リハビリテーション医学会, Oct. 2018, The Japanese Journal of Rehabilitation Medicine, 55(秋季特別号) (秋季特別号), S299 - S299, Japaneseロコトレリハビリプログラムによる脊柱アライメントと体幹バランスの改善効果
- (公社)日本リハビリテーション医学会, Oct. 2018, The Japanese Journal of Rehabilitation Medicine, 55(秋季特別号) (秋季特別号), S274 - S274, Japanese70歳以上の脊椎転移患者の手術成績 PS、ADL、QOLの推移から
- (公社)日本リハビリテーション医学会, Oct. 2018, The Japanese Journal of Rehabilitation Medicine, 55(秋季特別号) (秋季特別号), S367 - S367, Japanese脊椎転移の症候化リスク因子の前向き検討
- (一社)中部日本整形外科災害外科学会, Sep. 2018, 中部日本整形外科災害外科学会雑誌, 61(秋季学会) (秋季学会), 208 - 208, Japanese脊椎転移に対する手術は予後を延長させる
- (公社)日本整形外科学会, Aug. 2018, 日本整形外科学会雑誌, 92(8) (8), S1999 - S1999, Japanese新規低接着性scaffold collagen(LASCol)はラット骨欠損モデルにおいて骨癒合を促進する
- (公社)日本整形外科学会, Aug. 2018, 日本整形外科学会雑誌, 92(8) (8), S1733 - S1733, Japanese細胞低接着性コラーゲン(low adhesive scaffold collagen:LASCol)を用いた脊椎椎間板再生の試み
- (公社)日本整形外科学会, Aug. 2018, 日本整形外科学会雑誌, 92(8) (8), S1775 - S1775, Japanese動的圧迫負荷が、integrinα5β1を介して脊索由来細胞に与える影響
- (公社)日本整形外科学会, Aug. 2018, 日本整形外科学会雑誌, 92(8) (8), S1775 - S1775, Japanese脊椎椎間板におけるオートファジー活性は疾患よりも年齢と変性度に依存する
- (公社)日本整形外科学会, Aug. 2018, 日本整形外科学会雑誌, 92(8) (8), S1809 - S1809, Japaneseがん骨転移モデルに対するゼラチンハイドロゲルを用いた徐放化抗がん剤局所投与の有効性
- (公社)日本整形外科学会, Aug. 2018, 日本整形外科学会雑誌, 92(8) (8), S1881 - S1881, JapanesemTOR阻害薬テムシロリムスがヒト椎間板髄核細胞に及ぼす保護作用はAktとオートファジーの誘導に由来する
- (公社)日本整形外科学会, Jun. 2018, 日本整形外科学会雑誌, 92(6) (6), S1512 - S1512, Japanese不安定性を有する転移性脊椎腫瘍に対する治療 脊椎転移に対する手術療法の効果
- (公社)日本リハビリテーション医学会, May 2018, The Japanese Journal of Rehabilitation Medicine, 55(特別号) (特別号), 1 - 6, Japanese新規低接着性コラーゲン(LASCol)はラット大腿骨骨欠損モデルにおいて骨癒合を促進する
- (公社)日本リハビリテーション医学会, May 2018, The Japanese Journal of Rehabilitation Medicine, 55(特別号) (特別号), 1 - 2, Japanese細胞低接着性コラーゲン(Low Adhesive Scaffold Collagen:LASCol)による脊椎椎間板再生
- (公社)日本整形外科学会, Mar. 2018, 日本整形外科学会雑誌, 92(3) (3), S632 - S632, Japaneseロコモティブシンドロームに対するロコモ体操の脊椎・骨盤・下肢矢状断アライメント改善効果
- (一社)日本脊椎脊髄病学会, Mar. 2018, Journal of Spine Research, 9(3) (3), 429 - 429, Japanese脊椎転移に対する集学的治療は予後を延長させる
- (一社)中部日本整形外科災害外科学会, Mar. 2018, 中部日本整形外科災害外科学会雑誌, 61(春季学会) (春季学会), 101 - 101, Japanese前向きコホート研究による症候性脊椎転移の発生リスクに関する検討
- (一社)中部日本整形外科災害外科学会, Mar. 2018, 中部日本整形外科災害外科学会雑誌, 61(春季学会) (春季学会), 153 - 153, JapaneseAugmented Realityと生体模型により摘出しえた腰部伏針の1例
- (公社)日本整形外科学会, Mar. 2018, 日本整形外科学会雑誌, 92(3) (3), S1211 - S1211, Japanese腰椎変性すべり症に対する前後方間接除圧固定術と後方直接除圧固定術の多施設前向き研究による比較検討 臨床成績の観点から
- (公社)日本整形外科学会, Mar. 2018, 日本整形外科学会雑誌, 92(3) (3), S1215 - S1215, Japanese腰椎変性すべり症に対する前後合併椎体間固定術と後方椎体間固定術の多施設比較検討 固定椎間のX線学的評価
- (一社)日本脊椎脊髄病学会, Mar. 2018, Journal of Spine Research, 9(3) (3), 208 - 208, Japanese脊椎疾患治療の費用対効果 脊椎転移に対する手術加療の費用対効用
- (一社)日本脊椎脊髄病学会, Mar. 2018, Journal of Spine Research, 9(3) (3), 233 - 233, Japanese細胞低接着性コラーゲン(Low Adhesive Scaffold Collagen:LASCol)による脊椎椎間板再生の可能性
- (一社)日本脊椎脊髄病学会, Mar. 2018, Journal of Spine Research, 9(3) (3), 248 - 248, Japanese腰椎変性すべり症に対するOblique Lateral Interbody Fusion(OLIF)を用いた低侵襲前後合併椎体間固定術と後方椎体間固定術の多施設比較検討
- (一社)日本脊椎脊髄病学会, Mar. 2018, Journal of Spine Research, 9(3) (3), 289 - 289, Japaneseリウマチ頸椎不安定性発生防止のための予測因子 10年以上の前向き多施設共同研究からの検討
- (一社)日本脊椎脊髄病学会, Mar. 2018, Journal of Spine Research, 9(3) (3), 378 - 378, Japaneseロコモティブシンドロームに関連した脊椎・骨盤・下肢矢状面アライメント障害に対するロコモ体操の改善効果
- (一社)日本脊椎脊髄病学会, Mar. 2018, Journal of Spine Research, 9(3) (3), 478 - 478, Japanese仙骨骨折を合併した骨盤輪骨折に対するSacral-Aal-Iliac Screwを用いた腰仙椎後側法固定術の有用性
- (一社)日本脊椎脊髄病学会, Mar. 2018, Journal of Spine Research, 9(3) (3), 537 - 537, Japanese椎間板動的圧迫負荷が脊索由来髄核細胞に及ぼした影響
- (一社)日本脊椎脊髄病学会, Mar. 2018, Journal of Spine Research, 9(3) (3), 539 - 539, Japaneseオートファジーの抑制はヒト椎間板細胞においてアポトーシス・セネッセンスを誘導するが、細胞外基質代謝への影響は少ない
- (一社)日本脊椎脊髄病学会, Mar. 2018, Journal of Spine Research, 9(3) (3), 540 - 540, JapanesemTORC1阻害薬テムシロリムスのヒト椎間板髄核細胞保護効果はオートファジー及びAktの活性化に由来する
- (一社)日本脊椎脊髄病学会, Mar. 2018, Journal of Spine Research, 9(3) (3), 602 - 602, Japanese骨粗鬆に伴う多発椎体骨折を合併した成人脊柱変形手術の特徴と問題点
- (一社)日本移植学会, Feb. 2018, 移植, 52(6) (6), 587 - 587, JapanesemTORC1阻害薬テムシロリムスはヒト椎間板髄核細胞の細胞死、細胞老化、細胞外基質分解を抑制する
- 2018, 日本側彎症学会演題抄録集, 52nd筋ジストロフィーに伴う側弯症の手術成績
- 2018, 多血小板血漿(PRP)療法研究会プログラム・抄録集, 10thゼラチンハイドロゲルを用いた徐放化抗がん剤局所投与による骨転移局所制御
- 2018, 多血小板血漿(PRP)療法研究会プログラム・抄録集, 10th細胞低接着性コラーゲン(LASCol)を用いた脊椎椎間板再生の可能性
- (一社)中部日本整形外科災害外科学会, Sep. 2017, 中部日本整形外科災害外科学会雑誌, 60(秋季学会) (秋季学会), 143 - 143, Japaneseロコモティブシンドロームに対するロコモ体操の脊椎骨盤矢状面アライメントへの影響
- (公社)日本リハビリテーション医学会, Sep. 2017, The Japanese Journal of Rehabilitation Medicine, 54(秋季特別号) (秋季特別号), S339 - S339, Japaneseロコモ体操が脊柱アライメント、重心動揺に与える影響ロコモ体操が脊柱アライメント、重心動揺に与える影響
- (公社)日本整形外科学会, Aug. 2017, 日本整形外科学会雑誌, 91(8) (8), S1488 - S1488, Japanese運動器におけるオートファジーとアポトーシス オートファジーの抑制はヒト椎間板細胞においてアポトーシス、セネッセンスを誘導し、細胞数を減少させる
- (公社)日本整形外科学会, Aug. 2017, 日本整形外科学会雑誌, 91(8) (8), S1489 - S1489, Japanese運動器におけるオートファジーとアポトーシス 脊椎椎間板変性へのオートファジーの関与とその脊索由来細胞における恒常性維持機構の可能性
- (公社)日本整形外科学会, Aug. 2017, 日本整形外科学会雑誌, 91(8) (8), S1691 - S1691, Japanese椎間板変性と再生医療 mTORC1阻害薬テムシロリムスはヒト椎間板髄核細胞において細胞死、細胞老化、細胞外基質分解を抑制する
- (公社)日本整形外科学会, Jun. 2017, 日本整形外科学会雑誌, 91(6) (6), S1408 - S1408, Japanese症候性脊椎転移の発生リスクに関する前向き研究
- (一社)中部日本整形外科災害外科学会, Apr. 2017, 中部日本整形外科災害外科学会雑誌, 60(春季学会) (春季学会), 226 - 226, Japanese症候性脊椎転移の発生リスクに関する前向き研究
- (一社)中部日本整形外科災害外科学会, Apr. 2017, 中部日本整形外科災害外科学会雑誌, 60(春季学会) (春季学会), 226 - 226, Japaneseがん患者の脊椎転移に対する直視下手術と経皮的後方固定術の全身状態、ADL、QOL改善効果
- (一社)中部日本整形外科災害外科学会, Apr. 2017, 中部日本整形外科災害外科学会雑誌, 60(春季学会) (春季学会), 227 - 227, JapaneseSepatation surgery後にIMRTを施行した脊椎腫瘍の2例
- (公社)日本整形外科学会, Mar. 2017, 日本整形外科学会雑誌, 91(2) (2), S132 - S132, Japanese最重症型骨粗鬆症性多発脊椎椎体骨折に対する後方矯正固定術の臨床成績 2年以上経過症例を対象として
- (公社)日本整形外科学会, Mar. 2017, 日本整形外科学会雑誌, 91(2) (2), S471 - S471, Japanese腰椎変性すべり症に対する前後方間接除圧固定術と後方直接除圧固定術の多施設前向き研究による比較検討
- (公社)日本整形外科学会, Mar. 2017, 日本整形外科学会雑誌, 91(2) (2), S606 - S606, Japaneseがん患者の脊椎転移に対する直視下手術と経皮的後方固定術が及ぼす全身状態、ADL、QOL改善効果の比較
- (一社)日本脊椎脊髄病学会, Mar. 2017, Journal of Spine Research, 8(3) (3), 296 - 296, JapaneseATG5のノックダウンによるオートファジーの抑制はヒト椎間板細胞のアポトーシスとセネッセンスを誘導し、細胞数を減少させる
- (一社)日本脊椎脊髄病学会, Mar. 2017, Journal of Spine Research, 8(3) (3), 296 - 296, Japaneseヒト椎間板髄核細胞におけるmTOR阻害薬の細胞死、細胞老化、細胞外基質分解抑止効果の比較
- (一社)日本脊椎脊髄病学会, Mar. 2017, Journal of Spine Research, 8(3) (3), 322 - 322, Japanese近位端の2椎弓ポリエチレンテープ固定の追加はlong fusionにおけるPJKを予防できるか?
- (一社)日本脊椎脊髄病学会, Mar. 2017, Journal of Spine Research, 8(3) (3), 485 - 485, Japanese症候性脊椎転移の発生リスクに関する前向き研究
- (一社)日本脊椎脊髄病学会, Mar. 2017, Journal of Spine Research, 8(3) (3), 504 - 504, Japanese腰椎すべり症に対するOLIFを用いた前後方間接除圧固定術の手術成績 多施設前向き研究による後方直接除圧固定術との比較検討
- (一社)日本脊椎脊髄病学会, Mar. 2017, Journal of Spine Research, 8(3) (3), 589 - 589, Japanese椎間板髄核におけるオートファジーの重要性とその脊索表現型保持への関与の可能性
- (一社)日本脊椎脊髄病学会, Mar. 2017, Journal of Spine Research, 8(3) (3), 633 - 633, Japanese神経筋原性側彎症に対する脊椎矯正固定術の治療成績と合併症
- (一社)日本脊椎脊髄病学会, Mar. 2017, Journal of Spine Research, 8(3) (3), 663 - 663, Japaneseがん患者の脊椎転移に対して直視下手術と経皮的後方固定術が全身状態、ADL、QOLに及ぼす影響の比較
- (一社)日本脊椎脊髄病学会, Mar. 2017, Journal of Spine Research, 8(3) (3), 779 - 779, Japaneseハイリスク側彎症症例に対する後方側彎症手術の治療成績と周術期合併症
- (公社)日本整形外科学会, Mar. 2017, 日本整形外科学会雑誌, 91(2) (2), S179 - S179, Japanese有症状脊椎転移の発生リスクに関する前向き研究
- 2017, 移植(Web), 52(6) (6)mTORC1阻害薬テムシロリムスはヒト椎間板髄核細胞の細胞死,細胞老化,細胞外基質分解を抑制する
- (一社)中部日本整形外科災害外科学会, Sep. 2016, 中部日本整形外科災害外科学会雑誌, 59(秋季学会) (秋季学会), 81 - 81, JapaneseDDHと側彎症における小児検診 大都市における側彎症検診の現状と課題
- (一社)中部日本整形外科災害外科学会, Sep. 2016, 中部日本整形外科災害外科学会雑誌, 59(秋季学会) (秋季学会), 245 - 245, Japanese脊椎椎間板髄核におけるオートファジーの重要性とその誘導による椎間板変性予防の可能性
- (一社)中部日本整形外科災害外科学会, Sep. 2016, 中部日本整形外科災害外科学会雑誌, 59(秋季学会) (秋季学会), 327 - 327, Japanese硬膜内髄外腫瘍に起因する水頭症により意識障害を呈した2例
- (公社)日本整形外科学会, Aug. 2016, 日本整形外科学会雑誌, 90(8) (8), S1659 - S1659, Japanese椎間板変性の病態解明 椎間板変性モデルについて
- (公社)日本整形外科学会, Aug. 2016, 日本整形外科学会雑誌, 90(8) (8), S1686 - S1686, Japanese脊椎椎間板髄核では他の筋骨格・神経組織よりもオートファジーの関与が大きく、変性が進行するとその活性は減少する
- (公社)日本整形外科学会, Aug. 2016, 日本整形外科学会雑誌, 90(8) (8), S1688 - S1688, JapanesemTORシグナル経路への選択的な干渉はオートファジーとAktの活性化を誘導し、ヒト椎間板細胞における細胞死、細胞老化と細胞外基質分解を抑制する 椎間板遺伝子治療の可能性
- (公社)日本整形外科学会, Jun. 2016, 日本整形外科学会雑誌, 90(6) (6), S1286 - S1286, Japanese脊椎転移に対する保存的治療と外科的治療 脊椎転移に対する手術療法の効果
- (公社)日本整形外科学会, Mar. 2016, 日本整形外科学会雑誌, 90(2) (2), S94 - S94, Japanese脊椎転移に対する集学的治療の予後改善効果
- (公社)日本整形外科学会, Mar. 2016, 日本整形外科学会雑誌, 90(2) (2), S183 - S183, Japanese脊椎転移に対する手術加療の費用対効用
- (公社)日本整形外科学会, Mar. 2016, 日本整形外科学会雑誌, 90(2) (2), S241 - S241, Japaneseリウマチ頸椎不安定性重症化の予測因子 外来通院患者を対象とした10年以上の多施設共同前向き追跡調査からの検討
- (一社)日本脊椎脊髄病学会, Mar. 2016, Journal of Spine Research, 7(3) (3), 196 - 196, Japanese脊椎転移に対する集学的治療の予後改善効果
- (一社)日本脊椎脊髄病学会, Mar. 2016, Journal of Spine Research, 7(3) (3), 384 - 384, JapanesemTORシグナル経路への選択的な干渉はオートファジーとAktの活性化を誘導し、ヒト椎間板細胞における細胞死、老化と細胞外基質分解を抑制する
- (一社)日本脊椎脊髄病学会, Mar. 2016, Journal of Spine Research, 7(3) (3), 451 - 451, JapaneseAdiponectinの椎間板細胞に対する抗炎症効果と椎間板変性に伴うAdiponectin受容体の発現変化
- (一社)日本脊椎脊髄病学会, Mar. 2016, Journal of Spine Research, 7(3) (3), 453 - 453, Japanese椎間板では他の筋骨格系組織よりもオートファジーの関与が大きく、その活性は変性とともに減少する オートファジー制御による椎間板変性予防の可能性
- (一社)日本脊椎脊髄病学会, Mar. 2016, Journal of Spine Research, 7(3) (3), 461 - 461, Japanese骨粗鬆症性椎体骨折偽関節に対する手術戦略の検討
- (一社)日本脊椎脊髄病学会, Mar. 2016, Journal of Spine Research, 7(3) (3), 469 - 469, Japanese重度症候性側彎症手術時の椎弓根スクリュー刺入における電磁気センサー付きプローブの有用性
- (一社)日本脊椎脊髄病学会, Mar. 2016, Journal of Spine Research, 7(3) (3), 478 - 478, Japanese骨粗鬆症性多発脊椎椎体骨折に対する後方矯正固定術の臨床成績 1年以上経過症例を対象として
- (一社)日本脊椎脊髄病学会, Mar. 2016, Journal of Spine Research, 7(3) (3), 605 - 605, Japanese腰椎すべり症に対するOblique Lateral Interbody Fusion(OLIF)を用いた低侵襲前方後方固定術の手術成績 後方椎体間固定術との比較検討
- (一社)日本脊椎脊髄病学会, Mar. 2016, Journal of Spine Research, 7(3) (3), 700 - 700, Japaneseがん患者の脊椎転移に対する経皮的後方固定術の全身状態、ADL、QOL改善効果 直視下手術と比較して
- (一社)日本脊椎脊髄病学会, Mar. 2016, Journal of Spine Research, 7(3) (3), 709 - 709, Japanese脊髄円錐レベル近傍の硬膜内髄外腫瘍の特徴と問題点
- 日本脊椎脊髄病学会, Feb. 2016, Journal of spine research : official journal of the Japanese Society for Spine Surgery and Related Research, 7(2) (2), 114 - 121, EnglishPredictive Risk Factors for Severe Aggravation of Cervical Spine Instabilities in Rheumatoid Arthritis : A Prospective, Multicenter Over 10-year Cohort Study of Outpatients (日本脊椎脊髄病学会 英文原著号) -- (Excellent Papers of the 44th Annual Meeting of The Japanese Society for Spine Surgery and Related Research)
- 2016, Journal of Spine Research, 7(3) (3)mTORシグナル経路への選択的な干渉はオートファジーとAktの活性化を誘導し,ヒト椎間板細胞における細胞死,老化と細胞外基質分解を抑制する
- (一社)日本関節病学会, Oct. 2015, 日本関節病学会誌, 34(3) (3), 482 - 482, Japanese関節リウマチの脊椎病変 病態と手術治療 リウマチ頸椎不安定性の重症化予測因子
- (公社)日本整形外科学会, Sep. 2015, 日本整形外科学会雑誌, 89(8) (8), S1610 - S1610, Japanese椎間板細胞に対するadiponectinの抗炎症効果
- (一社)中部日本整形外科災害外科学会, Sep. 2015, 中部日本整形外科災害外科学会雑誌, 58(秋季学会) (秋季学会), 110 - 110, Japanese骨粗鬆症性椎体破裂骨折に対する手術戦略の検討
- (一社)中部日本整形外科災害外科学会, Sep. 2015, 中部日本整形外科災害外科学会雑誌, 58(秋季学会) (秋季学会), 142 - 142, Japanese重度症候性側彎症例への椎弓根スクリュー刺入における電磁波センサー付きプローブの有用性
- (一社)中部日本整形外科災害外科学会, Sep. 2015, 中部日本整形外科災害外科学会雑誌, 58(秋季学会) (秋季学会), 287 - 287, Japanese高悪性度脊椎転移に対する手術成績
- (公社)日本整形外科学会, Sep. 2015, 日本整形外科学会雑誌, 89(8) (8), S1522 - S1522, Japanese椎間板変性メカニズムと再生への架け橋 椎間板変性と抗老化因子との関係について
- (公社)日本整形外科学会, Sep. 2015, 日本整形外科学会雑誌, 89(8) (8), S1613 - S1613, JapanesemTORシグナル経路への選択的な干渉は椎間板における細胞死、老化と細胞外基質分解を抑制する
- (公社)日本整形外科学会, Sep. 2015, 日本整形外科学会雑誌, 89(8) (8), S1613 - S1613, Japaneseラパマイシン以外のmTOR阻害薬は椎間板細胞におけるアポトーシス、セネッセンス、細胞外基質分解を抑制しない
- (公社)日本整形外科学会, Sep. 2015, 日本整形外科学会雑誌, 89(8) (8), S1614 - S1614, Japaneseラパマイシンの椎間板細胞保護作用はオートファジーの誘導だけでなくAkt活性の上昇に由来している
- (公社)日本整形外科学会, Jun. 2015, 日本整形外科学会雑誌, 89(6) (6), S1355 - S1355, Japanese脊椎転移に対する集学的治療の予後改善効果
- (一社)中部日本整形外科災害外科学会, May 2015, 中部日本整形外科災害外科学会雑誌, 58(3) (3), 609 - 609, Japanese椎体全摘出術後に側彎症手術を要した第3腰椎骨芽細胞腫の1例
- (公社)日本整形外科学会, Mar. 2015, 日本整形外科学会雑誌, 89(2) (2), S363 - S363, Japanese関節リウマチ脊椎病変の疫学および治療戦略の変化 関節リウマチ頸椎病変の疫学と自然経過
- (一社)日本脊椎脊髄病学会, Mar. 2015, Journal of Spine Research, 6(3) (3), 237 - 237, Japanese骨粗鬆症性多発椎体骨折に伴う矢状面インバランスに対する手術戦略と問題点
- (一社)日本脊椎脊髄病学会, Mar. 2015, Journal of Spine Research, 6(3) (3), 244 - 244, JapaneseRA環軸関節前方亜脱臼に対する環軸関節固定術の意義 自然経過例との比較検討
- (一社)日本脊椎脊髄病学会, Mar. 2015, Journal of Spine Research, 6(3) (3), 244 - 244, Japaneseリウマチ頸椎不安定性の重症化予測因子 外来通院患者を対象とした10年以上の多施設共同前向き追跡調査からの検討
- (一社)日本脊椎脊髄病学会, Mar. 2015, Journal of Spine Research, 6(3) (3), 295 - 295, Japanese80歳以上の高齢者患者の脊椎術後合併症の検討
- (一社)日本脊椎脊髄病学会, Mar. 2015, Journal of Spine Research, 6(3) (3), 416 - 416, Japanese外来通院患者のリウマチ頸椎不安定性重症化の推移 10年以上の前向き多施設共同研究からの検討
- (一社)日本脊椎脊髄病学会, Mar. 2015, Journal of Spine Research, 6(3) (3), 589 - 589, Japanese椎間板細胞に対するadiponectinの抗炎症効果に関する検討
- (公社)日本整形外科学会, Mar. 2015, 日本整形外科学会雑誌, 89(3) (3), S974 - S974, Japanese重症症候性側彎症例における電磁波センサー付きプローブを用いた椎弓根スクリュー刺入法の有用性
- (一社)日本脊椎脊髄病学会, Mar. 2015, Journal of Spine Research, 6(3) (3), 486 - 486, JapaneseEuroQOL-5D(EQ-5D)を用いた転移性脊椎腫瘍に対する手術加療の費用対効用
- (一社)日本脊椎脊髄病学会, Mar. 2015, Journal of Spine Research, 6(3) (3), 518 - 518, Japanese高齢者脊椎転移に対する手術成績
- (一社)日本脊椎脊髄病学会, Mar. 2015, Journal of Spine Research, 6(3) (3), 640 - 640, Japanese骨転移専門tumor boardの取り組み
- (公社)日本整形外科学会, Mar. 2015, 日本整形外科学会雑誌, 89(3) (3), S667 - S667, Japanese高齢者脊椎転移に対する手術成績
- 2015, 中部日本整形外科災害外科学会雑誌, 58重度症候性側弯症例への椎弓根スクリュー刺入における電磁波センサー付きプローブの有用性
- 2015, 日本側彎症学会演題抄録集, 49thハイリスク側弯症症例に対する手術成績
- (一社)日本関節病学会, Oct. 2014, 日本関節病学会誌, 33(3) (3), 361 - 361, Japanese関節リウマチに対する頸椎手術の進歩 RA頸椎病変の自然経過と手術適応
- (公社)日本整形外科学会, Aug. 2014, 日本整形外科学会雑誌, 88(8) (8), S1401 - S1401, Japaneseオートファジーと整形外科疾患 栄養の欠乏は椎間板細胞におけるオートファジー、アポトーシス、セネッセンスならびに細胞外基質代謝に関与する
- (公社)日本整形外科学会, Aug. 2014, 日本整形外科学会雑誌, 88(8) (8), S1519 - S1519, Japaneseクロロキンは椎間板細胞においてオートファジーを阻害するとともにアポトーシスとセネッセンスを誘導し細胞外基質分解を促進する
- (公社)日本整形外科学会, Aug. 2014, 日本整形外科学会雑誌, 88(8) (8), S1520 - S1520, Japanese外因性SIRT1はヒト変性椎間板髄核細胞のオートファジーを亢進しアポトーシスを抑制する
- (公社)日本整形外科学会, Aug. 2014, 日本整形外科学会雑誌, 88(8) (8), S1571 - S1571, Japanese椎間板の変性・再生 椎間板変性の機序とそれに準じた再生の可能性
- (公社)日本整形外科学会, Aug. 2014, 日本整形外科学会雑誌, 88(8) (8), S1695 - S1695, Japanese動的圧迫負荷による脊索由来椎間板髄核細胞の変化
- (公社)日本整形外科学会, Aug. 2014, 日本整形外科学会雑誌, 88(8) (8), S1521 - S1521, Japanese椎間板細胞に対するadiponectinの抗炎症効果
- (一社)日本移植学会, May 2014, 移植, 49(1) (1), 174 - 174, Japanese動的圧迫負荷による椎間板変性にintegrin α5β1メカノレセプターが及ぼす影響
- (一社)日本脊椎脊髄病学会, Mar. 2014, Journal of Spine Research, 5(3) (3), 238 - 238, Japanese外因性SIRT1は低栄養条件下においてオートファジーを介しヒト椎間板髄核細胞のアポトーシスを阻害する
- (一社)日本脊椎脊髄病学会, Mar. 2014, Journal of Spine Research, 5(3) (3), 541 - 541, Japanese椎間板動的圧迫負荷による脊索由来髄核細胞の変化
- (公社)日本整形外科学会, Mar. 2014, 日本整形外科学会雑誌, 88(2) (2), S438 - S438, Japaneseリウマチ性頸椎病変に対する治療戦略 RA頸椎病変の自然経過
- (一社)日本脊椎脊髄病学会, Mar. 2014, Journal of Spine Research, 5(3) (3), 208 - 208, Japanese10年間におけるRA頸椎不安定性の進行 外来通院患者の前向き多施設共同研究
- (一社)日本脊椎脊髄病学会, Mar. 2014, Journal of Spine Research, 5(3) (3), 238 - 238, Japanese脊椎変性疾患の変性椎間板にはM1マクロファージが存在する
- 2014, 日本側彎症学会演題抄録集, 48th多椎間固定術による術後早期合併症の評価-固定隣接障害を中心に-
- 2014, 日本側彎症学会演題抄録集, 48th多発脊椎椎体骨折に伴う後弯変形に対するlong fusionの短期手術成績と問題点
- 2014, 日本側彎症学会演題抄録集, 48th椎体全摘術後に側弯症手術を要したL3骨芽細胞腫の一例
- 2014, 移植(Web), 49(1) (1)動的圧迫負荷による椎間板変性にintegrinα5β1メカノレセプターが及ぼす影響
- (公社)日本整形外科学会, Aug. 2013, 日本整形外科学会雑誌, 87(8) (8), S1632 - S1632, Japanese椎間板動的圧迫負荷による脊索由来髄核細胞の変化
- (公社)日本整形外科学会, Aug. 2013, 日本整形外科学会雑誌, 87(8) (8), S1456 - S1456, JapaneseSIRT1は低栄養条件下においてヒト椎間板髄核細胞のオートファジーを介しアポトーシスを抑制するMeeting report
- (一社)日本脊椎脊髄病学会, Mar. 2013, Journal of Spine Research, 4(3) (3), 409 - 409, Japanese非ヘルニア変性椎間板には古典的活性化(M1)マクロファージが存在する
- (公社)日本整形外科学会, Mar. 2013, 日本整形外科学会雑誌, 87(2) (2), S356 - S356, Japanese腰椎椎間板vacuum現象の分類の試みと臨床的意義についてMeeting report
- (一社)日本脊椎脊髄病学会, Mar. 2013, Journal of Spine Research, 4(3) (3), 301 - 301, Japanese椎間板変性では脊索由来細胞の消失が細胞外基質の分解を惹起する ラット椎間板多段階変性モデルにおける検討Meeting report
- (一社)中部日本整形外科災害外科学会, Mar. 2013, 中部日本整形外科災害外科学会雑誌, 56(春季学会) (春季学会), 126 - 126, Japanese椎間板変性では脊索由来細胞の消失を契機として細胞外基質分解が進行する ラット椎間板変性モデルでの検討Meeting report
- (公社)日本整形外科学会, Mar. 2013, 日本整形外科学会雑誌, 87(2) (2), S240 - S240, Japanese動的圧迫負荷による椎間板変性にintegrin α5β1が関与しているMeeting report
- (一社)日本脊椎脊髄病学会, Mar. 2013, Journal of Spine Research, 4(3) (3), 408 - 408, Japanese外因性SIRT1は低栄養条件下においてオートファジーを介しヒト椎間板髄核細胞の細胞増殖能を活性化させるMeeting report
- (一社)日本脊椎脊髄病学会, Mar. 2013, Journal of Spine Research, 4(3) (3), 410 - 410, Japanese共培養モデルを用いた椎間板ヘルニアにおける疼痛発生機序の検討Meeting report
- (一社)日本脊椎脊髄病学会, Mar. 2013, Journal of Spine Research, 4(3) (3), 804 - 804, Japanese腰椎椎間板vacuum現象のCT矢状断再構成像を用いた分類の試みMeeting report
- (公社)日本整形外科学会, Aug. 2012, 日本整形外科学会雑誌, 86(8) (8), S1121 - S1121, Japaneseラット椎間板多段階変性モデルにおいて細胞外基質の分解は脊索由来細胞の消失と相関している
- (公社)日本整形外科学会, Aug. 2012, 日本整形外科学会雑誌, 86(8) (8), S1128 - S1128, Japanese低栄養条件や疑似的低酸素条件下において長寿因子SIRT1が椎間板細胞のオートファジー活性に与える影響についての検討
- (公社)日本整形外科学会, Aug. 2012, 日本整形外科学会雑誌, 86(8) (8), S1397 - S1397, Japanese動的圧迫負荷が椎間板細胞のメカノレセプター発現に及ぼした影響
- (一社)日本脊椎脊髄病学会, Mar. 2012, Journal of Spine Research, 3(3) (3), 268 - 268, Japanese椎間板変性の初期にはADAMTS-5の発現が、進行期から末期にはMMP-3の発現が増大している ラット尾椎椎間板多段階圧迫モデルにおける検討
- (一社)日本脊椎脊髄病学会, Mar. 2012, Journal of Spine Research, 3(3) (3), 283 - 283, Japanese重度RA頸椎病変に対する術式変更の効用 多椎間後方固定術の意義
- (一社)日本脊椎脊髄病学会, Mar. 2012, Journal of Spine Research, 3(3) (3), 504 - 504, Japanese椎間板ヘルニアモデルにおいて抗IL-8抗体と抗TNFalpha抗体の両者の投与により疼痛域値が改善する
- (一社)日本脊椎脊髄病学会, Mar. 2012, Journal of Spine Research, 3(3) (3), 505 - 505, Japanese椎間板ヘルニアにおける炎症性反応には髄核細胞に発現するFas ligandが関与する 椎間板ヘルニアの疼痛発生機序解明に向けて
- (一社)日本脊椎脊髄病学会, Mar. 2012, Journal of Spine Research, 3(3) (3), 507 - 507, Japanese動的圧迫負荷がラット椎間板に及ぼす影響
- (一社)日本リウマチ学会, Mar. 2012, 日本リウマチ学会総会・学術集会・国際リウマチシンポジウムプログラム・抄録集, 56回・21回, 172 - 172, Japaneseリウマチ頸椎病変は今 RA頸椎病変の進行
- (公社)日本整形外科学会, Feb. 2012, 日本整形外科学会雑誌, 86(2) (2), S52 - S52, Japaneseマクロファージと椎間板の相互作用によるTNFalpha、IL-6、IL-8、PGE2産生が椎間板ヘルニアの炎症性痛に関与している
- (公社)日本整形外科学会, Aug. 2011, 日本整形外科学会雑誌, 85(8) (8), S1148 - S1148, Japaneseヒト椎間板髄核細胞においてFas ligandは炎症性サイトカイン産生に関与する 椎間板ヘルニアにおける疼痛発生機序の解明に向けて
- (公社)日本整形外科学会, Aug. 2011, 日本整形外科学会雑誌, 85(8) (8), S1243 - S1243, Japanese圧負荷を解除することで多様な変性段階の再現を可能にした
- (一社)中部日本整形外科災害外科学会, Mar. 2011, 中部日本整形外科災害外科学会雑誌, 54(春季学会) (春季学会), 93 - 93, JapaneseJOACMEQを用いた頸部脊髄症の手術適応基準作成の試み
- (一社)日本脊椎脊髄病学会, Mar. 2011, Journal of Spine Research, 2(3) (3), 487 - 487, Japanese腰部脊柱管狭窄症に対する最小侵襲手術を目的とした腰椎棘突起間スペーサーの開発 ヒト屍体と大型動物を用いた前臨床研究
- (一社)日本脊椎脊髄病学会, Mar. 2011, Journal of Spine Research, 2(3) (3), 520 - 520, Japanese脊髄神経鞘腫の摘出に伴う神経脱落症状の出現頻度
- (一社)日本脊椎脊髄病学会, Mar. 2011, Journal of Spine Research, 2(3) (3), 560 - 560, Japanese新JOA評価法の現況と展望 JOACMEQを用いた頸部脊髄症の手術適応基準作成の試み
- (一社)日本脊椎脊髄病学会, Mar. 2011, Journal of Spine Research, 2(3) (3), 593 - 593, Japanese頸椎疾患手術の適応と問題点 頸髄症に対する単純MRI、Kinematic MRI、Myelographyを用いた狭窄高位の評価 Myelographyは必要か?
- (公社)日本整形外科学会, Feb. 2011, 日本整形外科学会雑誌, 85(2) (2), S74 - S74, Japanese腰部脊柱管狭窄症に対する最小侵襲手術を目的とした腰椎棘突起間スペーサーの開発 ヒト死体と大型動物を用いた前臨床研究
- (公社)日本整形外科学会, Feb. 2011, 日本整形外科学会雑誌, 85(2) (2), S110 - S110, Japanese細胞生物学的な椎間板変性指標の確立を目指して ラット椎間板変性モデルを用いた検討
- (公社)日本整形外科学会, Feb. 2011, 日本整形外科学会雑誌, 85(2) (2), S202 - S202, Japaneseリウマチ頸椎病変 手術は、いつ、誰に必要なのか 近年発展を遂げた分野 RA頸椎病変における手術適応と術式選択 病変進行の観点から
- (公社)日本整形外科学会, Aug. 2010, 日本整形外科学会雑誌, 84(8) (8), S1252 - S1252, Japanese長寿因子Sirt1がヒト椎間板髄核細胞の細胞活性に与える影響の検討
- (公社)日本整形外科学会, Aug. 2010, 日本整形外科学会雑誌, 84(8) (8), S1259 - S1259, Japaneseラット尾椎椎間板静的圧迫モデルを用いた椎間板変性におけるアポトーシス機序の検討
- (一社)中部日本整形外科災害外科学会, May 2010, 中部日本整形外科災害外科学会雑誌, 53(3) (3), 709 - 709, Japanese脊椎硬膜外膿瘍と鑑別を要した広範囲転移性脊椎硬膜外腫瘍の1例
- (公社)日本整形外科学会, Apr. 2010, 日本整形外科学会雑誌, 84(4) (4), S272 - S272, Japanese頸椎症性脊髄症と後縦靱帯骨化症の術後成績の比較 JOACMEQによる評価
- (公社)日本整形外科学会, Apr. 2010, 日本整形外科学会雑誌, 84(4) (4), S367 - S367, Japanese気孔率の異なる2種類のハイドロキシアパタイト製スペーサーに対する骨結合能の評価 前向き研究
- (公社)日本整形外科学会, Apr. 2010, 日本整形外科学会雑誌, 84(4) (4), S396 - S396, Japanese頸椎椎弓形成術術後の臨床症状の経時的変化 JOACMEQによる前向き研究
- (公社)日本整形外科学会, Apr. 2010, 日本整形外科学会雑誌, 84(4) (4), S409 - S409, Japanese日本整形外科学会腰痛評価質問票(JOABPEQ)を用いた腰椎後方手術の経時的臨床評価
- (公社)日本整形外科学会, Apr. 2010, 日本整形外科学会雑誌, 84(4) (4), S410 - S410, Japanese腰部脊柱管狭窄症において症状が発現する立位と軽快する座位の違いはなにか 形態機能的解析
- (公社)日本整形外科学会, Apr. 2010, 日本整形外科学会雑誌, 84(4) (4), S686 - S686, Japanese一般診療医に腰部脊柱管狭窄症の認識度を高めるための前向き研究
- (公社)日本整形外科学会, Apr. 2010, 日本整形外科学会雑誌, 84(4) (4), S716 - S716, Japaneseリウマチ性(RA)頸椎不安定性における増悪予測因子の検討
- (一社)日本脊椎脊髄病学会, Mar. 2010, Journal of Spine Research, 1(3) (3), 377 - 377, JapaneseJOA新評価基準 臨床応用の展開 頸椎椎弓形成術術後の臨床症状の経時的変化 JOACMEQによる前向き研究
- (一社)日本脊椎脊髄病学会, Mar. 2010, Journal of Spine Research, 1(3) (3), 399 - 399, Japanese長寿因子Sirt1のヒト椎間板髄核細胞における発現と細胞活性に与える影響の検討
- (一社)日本脊椎脊髄病学会, Mar. 2010, Journal of Spine Research, 1(3) (3), 435 - 435, Japanese腰部脊柱管狭窄症に対する術式別(固定術VS開窓術)の経時的臨床評価
- (一社)日本脊椎脊髄病学会, Mar. 2010, Journal of Spine Research, 1(3) (3), 497 - 497, Japanese腰部脊柱管狭窄症に対する最小侵襲手術を目的とした腰椎棘突起間スペーサーの開発
- (一社)日本脊椎脊髄病学会, Mar. 2010, Journal of Spine Research, 1(3) (3), 529 - 529, JapaneseRA頸椎不安定性の発生とその重症化 不安定性を認めない症例に対する前向き追跡調査
- (一社)日本脊椎脊髄病学会, Mar. 2010, Journal of Spine Research, 1(3) (3), 557 - 557, Japanese腰部脊柱管狭窄症の症状発現に関する姿勢性因子の関与 症状が増悪する立位と軽快する座位における責任椎間の動きについて
- (一社)日本脊椎脊髄病学会, Mar. 2010, Journal of Spine Research, 1(3) (3), 666 - 666, Japaneseラット尾椎椎間板圧迫モデルを用いた椎間板変性におけるアポトーシス機序の解明
- (一社)日本脊椎脊髄病学会, Mar. 2010, Journal of Spine Research, 1(3) (3), 699 - 699, Japanese高齢者頸髄症に対する頸椎椎弓形成術の術後成績 JOACMEQによる評価
- (公社)日本整形外科学会, Mar. 2010, 日本整形外科学会雑誌, 84(3) (3), S124 - S124, Japanese高齢者頸髄症に対する頸椎椎弓形成術の術後成績 JOA点数とJOACMEQによる評価の差
- (公社)日本整形外科学会, Mar. 2010, 日本整形外科学会雑誌, 84(3) (3), S126 - S126, Japanese棘突起縦割式脊柱管拡大術における項靱帯温存手術の意義 Randomized controlled trial
- 30 Nov. 2009, 日本脊椎脊髄病学会雑誌 = The journal of the Japan Spine Research Society, 20(3) (3), 692 - 695, EnglishEvaluation of Clinical Outcomes of C3-6 Laminoplasty compared with Conventional C3-7 Laminoplasty using the JOACMEQ Scoring System
- 30 Nov. 2009, 日本脊椎脊髄病学会雑誌 = The journal of the Japan Spine Research Society, 20(3) (3), 713 - 717, EnglishA Prospective Clinical Evaluation of the Posterior Lumbar Surgery in Our Hospital using the JOA Back Pain Evaluation Questionnaire (JOABPEQ)
- (一社)中部日本整形外科災害外科学会, Sep. 2009, 中部日本整形外科災害外科学会雑誌, 52(秋季学会) (秋季学会), 38 - 38, Japanese腰部脊柱管狭窄症に対する最小侵襲手術をめざした棘突起間スペーサーの開発 Why not IPD?
- (公社)日本整形外科学会, Aug. 2009, 日本整形外科学会雑誌, 83(8) (8), S1162 - S1162, Japanese慢性疼痛(腰部)の発現機序 椎間板性腰痛の発現機序 免疫学的な観点から
- (公社)日本整形外科学会, Aug. 2009, 日本整形外科学会雑誌, 83(8) (8), S1203 - S1203, Japanese経皮的に挿入・抜去が可能な腰椎棘突起間スペーサーの開発 腰部脊柱管狭窄症に対する最小侵襲手術をめざして
- (公社)日本整形外科学会, Aug. 2009, 日本整形外科学会雑誌, 83(8) (8), S1208 - S1208, Japanese長寿因子Sirt 1のヒト椎間板髄核細胞における発現の検討
- (公社)日本整形外科学会, Aug. 2009, 日本整形外科学会雑誌, 83(8) (8), S1210 - S1210, Japanese基質代謝関連遺伝子の発現変動からみた椎間板変性の機序 ラット椎間板静的圧迫モデルを用いた長期の検討
- (公社)日本整形外科学会, Jun. 2009, 日本整形外科学会雑誌, 83(6) (6), S964 - S964, Japanese激烈な坐骨神経痛を呈しPETにより検出しえた坐骨神経内結節性筋膜炎の1例
- (一社)日本脊椎脊髄病学会, Mar. 2009, 日本脊椎脊髄病学会雑誌, 20(1) (1), 11 - 11, Japanese頸椎椎弓形成術におけるC7項靱帯付着部温存の意義 JOACMEQによる評価
- (一社)日本脊椎脊髄病学会, Mar. 2009, 日本脊椎脊髄病学会雑誌, 20(1) (1), 18 - 18, Japanese当院における腰椎後方手術の経時的臨床評価 日本整形外科学会腰痛評価質問票(JOABPEQ)を用いて
- (一社)日本脊椎脊髄病学会, Mar. 2009, 日本脊椎脊髄病学会雑誌, 20(1) (1), 70 - 70, Japanese頸椎椎弓形成術における後方支持組織の役割 Randomized Controlled Trial(RCT)
- (一社)日本脊椎脊髄病学会, Mar. 2009, 日本脊椎脊髄病学会雑誌, 20(1) (1), 105 - 105, Japanese持続的な圧負荷は椎間板髄核における異化・同化遺伝子群の不均衡を経時的に増大させる ラット尾椎椎間板変性モデルを用いた椎間板変性機序の解明
- (一社)日本脊椎脊髄病学会, Mar. 2009, 日本脊椎脊髄病学会雑誌, 20(1) (1), 308 - 308, Japaneseハイドロキシアパタイト製スペーサーの骨結合率はハイドロシキシアパタイトの気孔率に依存する A randomized controlled clinical trial
- (一社)日本脊椎脊髄病学会, Mar. 2009, 日本脊椎脊髄病学会雑誌, 20(2) (2), 324 - 324, JapaneseRA頸椎不安定性の追跡調査結果 外来通院患者5年間の前向き多施設共同研究
- (公社)日本整形外科学会, Mar. 2009, 日本整形外科学会雑誌, 83(3) (3), S518 - S518, Japaneseハイドロキシアパタイトの骨結合に対する前向き調査 A randomized controlled clinical trial
- (公社)日本整形外科学会, Mar. 2009, 日本整形外科学会雑誌, 83(3) (3), S557 - S557, Japaneseプライマリー医における腰部脊柱管狭窄の認識度とサポートツールの有用性に関するアンケート調査
- (一社)中部日本整形外科災害外科学会, Mar. 2009, 中部日本整形外科災害外科学会雑誌, 52(2) (2), 513 - 513, Japanese診断に難渋した左下肢痛の1例
- (公社)日本整形外科学会, Feb. 2009, 日本整形外科学会雑誌, 83(2) (2), S77 - S77, Japanese頸椎椎弓形成術ではC7項靱帯付着部温存は頸椎機能の保持に有用であるJOACMEQによる評価
- (一社)中部日本整形外科災害外科学会, Sep. 2008, 中部日本整形外科災害外科学会雑誌, 51(秋季学会) (秋季学会), 100 - 100, Japaneseラット椎間板変性モデルを用いた変性過程における遺伝子変動の検討 椎間板変性機序の解明を目指して
- (一社)中部日本整形外科災害外科学会, Sep. 2008, 中部日本整形外科災害外科学会雑誌, 51(秋季学会) (秋季学会), 162 - 162, Japanese強直性脊椎骨増殖症による強直部位での骨折のために遅発性麻痺を生じた3例
- 2008, 整形外科セラミック・インプラント研究会プログラム・抄録集, 28thハイドロキシアパタイト製スペーサーの骨結合に対する画像評価~A randomized controlled clinical trial~
- (公社)日本整形外科学会, Jun. 2007, 日本整形外科学会雑誌, 81(6) (6), S797 - S797, Japanese砂時計腫として仙骨に発生したRhabdoid Meningiomaの1例
- (一社)日本脊椎脊髄病学会, Mar. 2007, 日本脊椎脊髄病学会雑誌, 18(2) (2), 353 - 353, Japanese頸椎MRIは全ての脊髄圧迫病態を描出できるのか 脊髄造影との比較検討
- (一社)日本脊椎脊髄病学会, Mar. 2007, 日本脊椎脊髄病学会雑誌, 18(2) (2), 363 - 363, JapaneseRAに対する後頭脊椎固定術の術後成績 long fusionとshort fusionの比較
- (一社)中部日本整形外科災害外科学会, Mar. 2007, 中部日本整形外科災害外科学会雑誌, 50(春季学会) (春季学会), 101 - 101, JapaneseElectrodiagnostic assessment and clinical outcome of cubital tunnel syndrome
- (一社)中部日本整形外科災害外科学会, Jan. 2007, 中部日本整形外科災害外科学会雑誌, 50(1) (1), 176 - 176, JapaneseMRI T2強調画像髄内高輝度変化が術後完全に消失したKlippel-Feil症候群の1例
- 日本最小侵襲整形外科学会, Sep. 2006, 日本最小侵襲整形外科学会誌, 6(1) (1), 35 - 35, Japanese大腿骨転子部骨折に対する最小侵襲髄内釘手術
- (一社)日本骨折治療学会, Jun. 2006, 骨折, 28(Suppl.) (Suppl.), S141 - S141, Japanese大腿骨頸部内側に対するdual SC screw
- (一社)日本骨折治療学会, Jun. 2006, 骨折, 28(Suppl.) (Suppl.), S146 - S146, Japanese大腿骨転子部骨折に対する髄内釘手術時の工夫 改良式大腿骨軸マーキング法
- 日本関節鏡学会, Jun. 2006, 関節鏡, 31(1) (1), 133 - 133, Japanese異常可動性外側半月(hypermobile lateral meniscus)における臨床所見とMRIの相関性
- 日本関節鏡学会, Jun. 2006, 関節鏡, 31(1) (1), 205 - 205, Japanese関節鏡視下半月切除後に生じた骨壊死例の検討
- (一社)中部日本整形外科災害外科学会, Mar. 2005, 中部日本整形外科災害外科学会雑誌, 48(2) (2), 406 - 406, Japanese腫瘍と鑑別を要した慢性腰椎硬膜外血腫の1例
- (一社)日本自己血輸血学会, Feb. 2005, 自己血輸血, 18(学術総会) (学術総会), S17 - S17, Japanese関節リウマチ患者の自己血輸血の工夫 関節リウマチ(RA)患者での人工膝関節全置換術(TKA)における自己血輸血及びトラネキサム酸を用いた同種血輸血回避の工夫
- (一社)日本自己血輸血学会, Feb. 2005, 自己血輸血, 18(学術総会) (学術総会), S25 - S25, Japanese2椎間の後方進入腰椎椎体間固定術における,自己血貯血の必要性についての検討
- (一社)日本自己血輸血学会, Feb. 2005, 自己血輸血, 18(学術総会) (学術総会), S25 - S25, Japanese洗浄式自己血回収装置の比較,検討
- (一社)中部日本整形外科災害外科学会, Nov. 2003, 中部日本整形外科災害外科学会雑誌, 46(6) (6), 1177 - 1177, JapaneseTHA(人工股関節全置換術)後に肺血栓塞栓症を生じ開心術にて救命し得た1例
- Editor, Korean Spinal Neurosurgery Society, Dec. 2025Emerging Biotechnologies for the Treatment of the Spine, Neurospine
- Joint editor, 24(21), 15874; 24(22), 16024; 24(23), 16713; 24(23), 16827; 25(3), 1548; 25(4), 2406; 25(7), 3655, Multidisciplinary Digital Publishing Institute, Dec. 2024Regeneration for Spinal Diseases 4.0, International Journal of Molecular Sciences
- Joint editor, 24(1), 892; 24(4), 3146; 24(4), 4198; 24(6), 5768; 24(8), 7664; 24(8), 7677; 24(10), 8566; 24(13), 10971; 24(15), 12289; 24(15), 12336; 24(22), 16335, Multidisciplinary Digital Publishing Institute, Nov. 2023Regeneration for Spinal Diseases 3.0, International Journal of Molecular Sciences
- Joint editor, 58(9), 1284; 59(1), 22; 59(1), 112; 59(3), 539, Multidisciplinary Digital Publishing Institute, May 2023New Advances in Intervertebral Disc Degeneration, Medicina (Kaunas)
- Joint editor, 22(20), 11012; 22(21), 11355; 22(23), 12875; 22(24), 13641; 23(1), 371; 23(5), 2530; 23(5), 2721; 23(6), 2973; 23(7), 4014; 23(7), 4059; 23(8), 4267; 23(9), 5038; 23(11), 6218; 23(13), 7306; 23(17), 9710, Multidisciplinary Digital Publishing Institute, Aug. 2022Regeneration for Spinal Diseases 2.0, International Journal of Molecular Sciences
- Joint editor, 22(4-16), 1744; 2579; 3519; 3638; 3965; 4141; 4248; 4453; 4723; 4853; 4917; 5281; 5648; 6015; 6970; 8356, Multidisciplinary Digital Publishing Institute, Aug. 2021Regeneration for Spinal Diseases, International Journal of Molecular Sciences
- 第15回日本成人脊柱変形学会, Oct. 2025ロコモ患者の腰椎骨盤矢状面アライメントにおけるロコトレ通院リハビリテーション介入効果－2年間の前向き追跡調査－Poster presentation
- 第33回日本腰痛学会, Oct. 2025ロコモ患者の全脊柱矢状面アライメントに対するロコトレ通院リハビリテーション介入効果－2年間の前向き追跡調査－Public symposium
- ASAHI PTHセミナー, Sep. 2025骨粗鬆症患者におけるアライメントの再建を目指した腰椎後方椎体間固定術－骨形成促進薬テリパラチドへの期待－[Invited]Public discourse
- The 4th International Symposium of Korean Society for Study of Lumbar Spine, Sep. 2025Effects of sustained locomotion training-based outpatient rehabilitation on the sagittal spine–pelvis–lower extremity alignment in locomotive syndrome: a 2-year prospective cohort study[Invited]Invited oral presentation
- The 16th Annual Conference, Korean Spinal Research Society, Sep. 2025Development of gene-silencing therapeutic approach targeting intracellular PI3K/Akt/mTOR signaling and autophagy for degenerative disc disease[Invited]Invited oral presentation
- 第34回日本リウマチ学会近畿支部学術集会, Sep. 2025リウマチ性頚椎不安定性による身体機能障害への影響－10年以上の多施設前向き追跡調査結果からの検討－[Invited]Nominated symposium
- 第2回骨粗鬆症病診連携の会in灘・東灘, Jul. 2025骨粗鬆症とアライメントを考慮に入れた腰椎後方椎体間固定術－新規骨形成促進薬アバロパラチドへの期待－[Invited]Public discourse
- 第98回日本整形外科学会学術総会, May 2025高齢者がん脊椎転移手術において予後予測に対するフレイルの影響Oral presentation
- 第98回日本整形外科学会学術総会, May 2025ロコモ患者へのロコトレ外来通院リハビリテーション介入による全脊柱矢状面アライメント改善効果―2年間の前向き追跡調査―Oral presentation
- 第98回日本整形外科学会学術総会, May 2025遺伝子治療による椎間板の恒常性維持を目指した変性予防へのアプローチ[Invited]Nominated symposium
- The 51st Annual Meeting, International Society for the Study of the Lumbar Spine, May 2025Effects of sustained locomotion training-based outpatient rehabilitation on the global sagittal spinal alignment in locomotive syndrome: a 2-year prospective cohort studyOral presentation
- The 51st Annual Meeting, International Society for the Study of the Lumbar Spine, May 2025Risk factors for surgical site infection following spine surgery and the impact of preventive measures in a satellite single hospital: A 10-year retrospective studyPoster presentation
- The 51st Annual Meeting, International Society for the Study of the Lumbar Spine, May 2025RNA interference of RAPTOR/mTORC1 more effectively protects against degenerative disc disruption than drug intervention, which nevertheless facilitates a limited microenvironmental improvement of degenerated discs in a rat tail temporary static compression modelPoster presentation
- The 51st Annual Meeting, International Society for the Study of the Lumbar Spine, May 2025Effects of locomotion training-based outpatient rehabilitation on paraspinal muscle fat infiltration and cross-sectional area in locomotive syndrome: a 2-year prospective studyPoster presentation
- The 51st Annual Meeting, International Society for the Study of the Lumbar Spine, May 2025Safety and Efficiency of Release-Controlled RNA Interference Targeting Raptor with Cationized Gelatin Nanospheres in Rat Intervertebral Disc Nucleus Pulposus Cells: a Development of New Drug Delivery SystemOral presentation
- The 51st Annual Meeting, International Society for the Study of the Lumbar Spine, May 2025Modified frailty index enhanced the discrimination ability of the existing prognostic scoring system in elderly patients with spinal metastasesPoster presentation
- The 51st Annual Meeting, International Society for the Study of the Lumbar Spine, May 2025Activation of Transient Receptor Potential Vanilloid 4 by agonist promotes autophagy and extracellular matrix synthesis through AMPK pathway in rat intervertebral discPoster presentation
- The 51st Annual Meeting, International Society for the Study of the Lumbar Spine, May 2025Does the surgeon's experience affect the postoperative outcome of spinal metastasis surgery?Poster presentation
- 第54回日本脊椎脊髄病学会学術集会, Apr. 2025大学連携の一市中病院における脊椎術後感染症例の臨床像と対策：―10年間の後方視的調査―Oral presentation
- 第54回日本脊椎脊髄病学会学術集会, Apr. 2025RAPTOR/mTORC1 への RNA 干渉はラット尾椎椎間板一時静的圧迫モデルにお いて椎間板変性抑止効果を示すOral presentation
- 第54回日本脊椎脊髄病学会学術集会, Apr. 2025大学連携の一市中病院における脊椎術後感染症例の危険因子の検討 ―10年間の後方視的調査―Oral presentation
- 第54回日本脊椎脊髄病学会学術集会, Apr. 2025Efficiency of release-controlled RNA interference targeting Raptor with cationized gelatin nanospheres in rat intervertebral disc nucleus pulposus cellsPoster presentation
- 第54回日本脊椎脊髄病学会学術集会, Apr. 2025転移性脊椎腫瘍に対する後方固定において転移椎体への椎弓根スクリュー挿入の安全性の検討Oral presentation
- 第54回日本脊椎脊髄病学会学術集会, Apr. 2025小児腰椎分離症における罹患高位別の特徴Oral presentation
- 第54回日本脊椎脊髄病学会学術集会, Apr. 2025Transient Receptor Potential Vanilloid 4 (TRPV4)活性化によるラット椎間板のオートファジーと細胞外基質合成の促進Oral presentation
- 第54回日本脊椎脊髄病学会学術集会, Apr. 2025脊椎転移手術における術者経験の多寡と術後成績についての検証Poster presentation
- 第54回日本脊椎脊髄病学会学術集会, Apr. 2025小児環軸椎不安定症に対する環軸椎後方固定術における環椎外側塊スクリューと軸椎椎弓根スクリューの徒手的刺入の精度Poster presentation
- 第54回日本脊椎脊髄病学会学術集会, Apr. 2025歯突起後方偽腫瘍に対するC1後弓切除後の偽腫瘍サイズ変化の予測因子Poster presentation
- 第54回日本脊椎脊髄病学会学術集会, Apr. 2025Frailty as a novel predictor for survival in elderly patients with spinal metastases: A prospective cohort studyOral presentation
- 第54回日本脊椎脊髄病学会学術集会, Apr. 2025ロコモ患者に対するロコトレ通院リハビリテーションは傍脊柱筋群の筋量増加と脂肪化率低下を介して全脊椎矢状面アライメントを改善させるOral presentation
- 第54回日本脊椎脊髄病学会学術集会, Apr. 2025ロコモ患者の全脊柱矢状面アライメントにおけるロコトレ通院リハビリテーション介入効果―2年間の前向き追跡調査―Oral presentation
- Seminar for Safe Cervical Spine Surgery 2025, Feb. 2025上位頚椎後方手術：Instrumentation[Invited]Public discourse
- 第18回播磨臨床整形外科研究会, Feb. 2025骨粗鬆症を考慮に入れた腰椎後方椎体間固定術－新規骨形成促進薬アバロパラチドへの期待－[Invited]Public discourse
- The 71st Annual Meeting, Orthopaedic Research Society, Feb. 2025Comparative study between RNA interference and CRISPR–Cas9 for Raptor gene silencing in intracellular mTOR signaling to treat intervertebral disc degenerationPoster presentation
- The 71st Annual Meeting, Orthopaedic Research Society, Feb. 2025Selective RNA interference of RAPTOR/mTORC1 alleviates the onset of disc degeneration and ameliorates the microenvironment of degenerated discs in a rat tail temporary static compression modelPoster presentation
- The 71st Annual Meeting, Orthopaedic Research Society, Feb. 2025Agonist-induced activation of Transient Receptor Potential Vanilloid 4 promotes autophagy and extracellular matrix synthesis via AMPK pathway in rat intervertebral discPoster presentation
- The 71st Annual Meeting, Orthopaedic Research SocietyTransient Receptor Potential Vanilloid 4 (TRPV4) knockdown decreases extracellular matrix synthesis via autophagy suppression in rat intervertebral discPoster presentation
- 第14回DDS再生医療研究会, Dec. 2024化膿性椎間板炎に対するゼラチンハイドロゲルを用いた新たなる治療法の開発Oral presentation
- 第62回脊椎外科を学ぶ会, Nov. 2024脊椎術後follow中に偶然発見された悪性腫瘍の3例Oral presentation
- The 16th Annual Meeting, CHA Bundang Medical Center Annual Meeting, Nov. 2024Management of surgical site infection in spine surgery: clinical experience and basic science approach[Invited]Invited oral presentation
- The 7th International Spine Research Symposium, Orthopaedic Research Society Philadelphia Spine Research Symposium, Nov. 2024Safety and Efficiency of Controlled Release RNA Interference Targeting Raptor with Cationized Gelatin Nanospheres in Rat Intervertebral Disc Nucleus Pulposus Cells: a Development of New Drug Delivery SystemOral presentation
- The 7th International Spine Research Symposium, Orthopaedic Research Society Philadelphia Spine Research SymposiumComparative study between RNA Interference and CRISPR–Cas9 for RAPTOR gene silencing in intracellular mTOR signaling of human degenerative intervertebral disc cellsPoster presentation
- 日本リハビリテーション医学会秋季学術集会, Nov. 2024高齢者がん脊椎転移手術におけるフレイルの予後予測に対する影響Oral presentation
- 第58回日本側弯症学会学術集会, Nov. 2024小児環軸椎不安定症に対する環軸椎後方固定術における環椎外側塊スクリューと軸椎椎弓根スクリューの徒手的刺入の精度Oral presentation
- 第32回日本腰痛学会, Oct. 2024外来通院リハビリテーションでのロコトレ指導によるロコモ患者の全脊柱矢状面アライメント改善効果：2年間の前向き追跡調査Public symposium
- 第5回BioSpine Japan, Oct. 2024Transient Receptor Potential Vanilloid 4 (TRPV4) knockdown decreases extracellular matrix synthesis via autophagy suppression in the rat intervertebral discOral presentation
- 第39回日本整形外科学会基礎学術集会, Oct. 2024椎間板の恒常性維持を目指した遺伝子治療による変性予防へのアプローチ[Invited]Nominated symposium
- 第39回日本整形外科学会基礎学術集会, Oct. 2024RNA干渉とCRISPR–Cas9を用いたmTORシグナル経路の選択的阻害による椎間板保護作用の比較検討Oral presentation
- 第39回日本整形外科学会基礎学術集会, Oct. 2024ラット椎間板におけるtransient receptor potential vanilloid 4（TRPV4）阻害がオートファジーと細胞外基質合成を抑制するOral presentation
- 第39回日本整形外科学会基礎学術集会, Oct. 2024ラット椎間板髄核細胞に対するカチオン化ゼラチンナノ粒子を用いたRaptorを標的とした徐放型RNA干渉の有用性Poster presentation
- 第39回日本整形外科学会基礎学術集会, Oct. 2024Transient Receptor Potential Vanilloid 4(TRPV4)活性化はラット椎間板のオートファジーと細胞外基質合成を促進するPoster presentation
- 第39回日本整形外科学会基礎学術集会RAPTOR/mTORC1への生体内RNA干渉はラット椎間板において椎間板変性抑止作用を示すOral presentation
- 第143回中部日本整形外科災害外科学会学術集会, Oct. 2024前方開大型エクスパンダブルケージを用いた腰椎前弯再建・側弯矯正の試み[Invited]Public discourse
- 第143回中部日本整形外科災害外科学会, Oct. 2024RAPTOR/mTORC1への生体内RNA干渉はラット尾椎椎間板において椎間板変性抑止効果を示すOral presentation
- 第143回中部日本整形外科災害外科学会, Oct. 2024早期発症側弯症を呈するLarsen症候群の患児に対しShilla法による成長温存手術を行い最終固定に至った2例Oral presentation
- 第143回中部日本整形外科災害外科学会, Oct. 2024椎間板のTransient Receptor Potential Vanilloid 4阻害によるオートファジー活性と細胞外基質 合成の抑制Oral presentation
- 第143回中部日本整形災害外科学会, Oct. 2024脊椎転移手術とフレイルの関連についてmFI-5を用いた検討Oral presentation
- 第143回中部日本整形外科災害外科学会, Oct. 2024リウマチ患者頚椎不安定性新規発生のリスク因子 -10年以上前向き多施設共同研究-Oral presentation
- 第143回中部日本整形外科災害外科学会学術集会, Oct. 2024ロコトレ通院リハビリテーションによるロコモ患者の全脊柱矢状面アライメント改善効果 -2年間の前向き調査-[Invited]Nominated symposium
- 第143回中部日本整形外科災害外科学会学術集会, Oct. 2024体幹装具採型における石膏包帯使用時と 3Dデジタルスキャナ使用時の適合性の比較Oral presentation
- 第143回中部日本整形外科災害外科学会, Oct. 2024経皮的椎弓根スクリュー挿入におけるスマートグラスの有用性[Invited]Nominated symposium
- 第143回中部日本整形外科災害外科学会, Oct. 2024胸髄くも膜嚢腫による胸髄症との鑑別を要した視神経脊髄炎の1例Oral presentation
- 第12回Japan Association of Spine surgeons with Ambition, Aug. 2024ロコトレ通院リハビリテーション介入によるロコモ患者の脊椎骨盤矢状面アライメント改善効果―2年間の前向き追跡調査―Oral presentation
- 第2回 厚生労働省 令和6年度「慢性疼痛診療システム均てん化事業」痛みセンター多職種連携研修会, Jul. 2024慢性疼痛・神経痛を有する脊椎疾患の治療戦略[Invited]Public discourse
- 第57回日本整形外科学会学会骨軟部腫瘍学術集会, Jul. 2024高齢者脊椎転移手術においてフレイルは生命予後予測因子であるOral presentation
- The 50th Annual Meeting, International Society for the Study of the Lumbar Spine, May 2024Surgical outcome for spinal metastasis of renal cell carcinomaPoster presentation
- The 50th Annual Meeting, International Society for the Study of the Lumbar Spine, May 2024Transient Receptor Potential Vanilloid 4 (TRPV4) knockdown decreases matrix synthesis by diminishing autophagy in rat intervertebral discPoster presentation
- The 50th Annual Meeting, International Society for the Study of the Lumbar Spine, May 2024Development of gene-silencing therapies for intervertebral disc cells based on the functional analysis of intracellular mTOR signaling using RNA interference and CRISPR–Cas9Poster presentation
- The 50th Annual Meeting, International Society for the Study of the Lumbar Spine, May 2024Relationships between frailty and surgical outcomes of palliative surgery for spinal metastasesOral presentation
- The 50th Annual Meeting, International Society for the Study of the Lumbar Spine, May 2024Effects of sustained locomotion training-based outpatient rehabilitation on the sagittal spinopelvic alignment in locomotive syndrome: a 2-year prospective cohort studyOral presentation
- The 50th Annual Meeting, International Society for the Study of the Lumbar Spine, May 2024Frailty as a prognostic factor for survival in the elderly patients with spinal metastases: A prospective cohort studyOral presentation
- The 50th Annual Meeting, International Society for the Study of the Lumbar Spine, May 2024Agonist-induced activation of Transient Receptor Potential Vanilloid 4 promotes autophagy and extracellular matrix synthesis through AMPK pathway in rat intervertebral discPoster presentation
- The 50th Annual Meeting, International Society for the Study of the Lumbar Spine, May 2024Selective RNA interference of Raptor/mTORC1 effectively alleviates degenerative disc disruption and partially improve degenerated disc microenvironment in a rat tail temporary static compression modelOral presentation
- 第97回日本整形外科学会学術総会, May 2024腎癌脊椎転移に対する手術成績Poster presentation
- 第97回日本整形外科学会学術総会, May 2024脊椎転移手術とフレイルの関連 －mFI-5を用いた検討－Poster presentation
- 第97回日本整形外科学会学術総会, May 202480歳以上脊椎転移患者に対する手術成績 ｰ216例の前向き検討ｰPoster presentation
- 第97回日本整形外科学会学術総会, May 2024ロコモ患者へのロコトレ通院リハビリテーション介入による脊椎骨盤矢状面アライメント改善効果―2年間の前向き追跡調査―[Invited]Poster presentation
- 第97回日本整形外科学会学術総会, May 2024転移性脊椎腫瘍に対する緊急手術成績と緊急手術に至るリスク因子の前向き検討Oral presentation
- 第97回日本整形外科学会学術総会, May 2024歯突起後方偽腫瘍における頚椎X線像評価 ―3大学多施設共同研究―Poster presentation
- 第97回日本整形外科学会学術総会, May 2024軸椎歯突起後方偽腫瘍の発症メカニズムについて —3大学多施設共同研究—Oral presentation
- 第97回日本整形外科学会学術総会, May 2024ロコモ患者へのロコトレ通院リハビリテーションによる傍脊柱筋の脂肪変性・筋量改善効果ー2年間の前向き追跡調査ーOral presentation
- 第97回日本整形外科学会学術総会, May 2024環軸椎亜脱臼症例における歯突起後方偽腫瘍発生リスク因子の検討:3大学多施設共同研究Oral presentation
- 第97回日本整形外科学会学術総会脊椎転移に対する手術療法の予後延長効果Oral presentation
- 第53回日本脊椎脊髄病学会学術集会, Apr. 2024フレイルは脊椎転移手術の術後成績に影響するか －mFI-5を用いた検討－Oral presentation
- 第68回日本リウマチ学会総会・学術集会, Apr. 2024リウマチ性頚椎不安定性に対する手術の進化と未来展望―10年以上の多施設前向き追跡調査結果からの検討―[Invited]Nominated symposium
- 第53回日本脊椎脊髄病学会学術集会, Apr. 2024椎間板の恒常性維持・変性予防を目指した遺伝子治療法の開発[Invited]Nominated symposium
- 第53回日本脊椎脊髄病学会学術集会, Apr. 2024mTORシグナル経路に対する遺伝子干渉法を用いた椎間板治療の研究 - ラット椎間板変性モデルを用いた研究 -Oral presentation
- 第53回日本脊椎脊髄病学会学術集会, Apr. 2024Transient Receptor Potential Vanilloid 4 (TRPV4) knockdown decreases matrix synthesis via autophagy suppression in rat intervertebral discOral presentation
- 第53回日本脊椎脊髄病学会学術集会, Apr. 2024RNA干渉とCRISPR–Cas9を用いたmTORシグナル経路の選択的阻害に基づく椎間板変性への新規細胞生物学的治療戦略Oral presentation
- 第53回日本脊椎脊髄病学会学術集会, Apr. 2024Surgical outcome for spinal metastasis of renal cell carcinomaOral presentation
- 第53回日本脊椎脊髄病学会学術集会, Apr. 2024慢性腰痛を有する脊椎変性疾患の治療戦略―薬物療法，リハビリテーション，そして将来の予防的介入―[Invited]Public discourse
- 第53回日本脊椎脊髄病学会学術集会, Apr. 2024歯突起後方偽腫瘍手術症例における頚椎X線学的変性所見の特徴：3大学多施設共同研究Oral presentation
- 第53回日本脊椎脊髄病学会学術集会, Apr. 2024軸椎歯突起後方偽腫瘍の発症メカニズムについて：3大学多施設共同研究Oral presentation
- 第53回日本脊椎脊髄病学会学術集会, Apr. 2024成長期形成不全性すべり症に対する手術成績-全脊椎アライメントに注目して-Oral presentation
- 第53回日本脊椎脊髄病学会学術集会, Apr. 2024リウマチ患者における新規頚椎不安定性発生のリスク因子 -10年以上の前向き多施設共同研究からの検討-Oral presentation
- 第53回日本脊椎脊髄病学会学術集会, Apr. 2024環軸椎亜脱臼症例における歯突起後方偽腫瘍の発生要因の検討:3大学多施設共同研究Oral presentation
- 第53回日本脊椎脊髄病学会学術集会, Apr. 2024成長期L5腰椎分離症に対する保存療法後の再発リスク因子の検討Oral presentation
- 第53回日本脊椎脊髄病学会学術集会, Apr. 2024第15 回Asia Traveling Fellowship ―韓国・シンガポール訪問記―[Invited]Poster presentation
- 第53回日本脊椎脊髄病学会学術集会, Apr. 2024ロコモ患者の脊椎骨盤矢状面アライメントにおけるロコトレ通院リハビリテーション介入効果―2年間の前向き追跡調査―Oral presentation
- 第53回日本脊椎脊髄病学会学術集会, Apr. 2024ロコモ患者へのロコトレ通院リハビリテーションによる傍脊柱筋の脂肪化率・断面積改善効果ー2年以上の前向き追跡調査ーOral presentation
- 第53回日本脊椎脊髄病学会学術集会, Apr. 2024脊椎転移に対する緊急手術成績と緊急手術に至るリスク因子の前向き検討Oral presentation
- 第53回日本脊椎脊髄病学会学術集会, Apr. 2024Transient Receptor Potential Vanilloid 4 activation promotes autophagy and extracellular matrix synthesis in the rat intervertebral discOral presentation
- 第53回日本脊椎脊髄病学会学術集会脊椎転移に対する手術療法の予後延長効果Oral presentation
- 第61回脊椎外科を学ぶ会, Mar. 2024精巣がんリンパ節転移に対して脊椎骨全摘出術を行った一例Oral presentation
- Seminar for Safe Cervical Spine Surgery 2024, Feb. 2024上位頚椎後方手術：Instrumentation[Invited]Public discourse
- The 70th Annual Meeting, Orthopaedic Research SocietyComparative study between gene silencing strategies for intervertebral disc degeneration using RNA interference and CRISPR–Cas9 through the selective interference of mTOR signalingPoster presentation
- The 70th Annual Meeting, Orthopaedic Research Society, Feb. 2024Selective RNA interference of RAPTOR/mTORC1 protects against the progression of intervertebral disc degeneration in a rat tail temporary static compression modelOral presentation
- The 70th Annual Meeting, Orthopaedic Research Society, Feb. 2024Transient Receptor Potential Vanilloid 4 (TRPV4) activation by agonist promotes autophagy and extracellular matrix synthesis through AMPK pathway in rat intervertebral discPoster presentation
- The 70th Annual Meeting, Orthopaedic Research SocietyTransient Receptor Potential Vanilloid 4 (TRPV4) knockdown decreases extracellular matrix synthesis via autophagy suppression in rat intervertebral discPoster presentation
- The 70th Annual Meeting, Orthopaedic Research SocietyGelatin hydrogel with sustained cefazolin release as a novel treatment for pyogenic spondylitisPoster presentation
- The 3rd Annual Conference, Korean Society of Basic Neurosurgical Sciences, Dec. 2023Development of gene therapy by modulating intracellular mTOR signaling and autophagy for degenerative disc disease[Invited]Invited oral presentation
- 第5回脊椎腫瘍・骨粗鬆症研究会, Dec. 2023診断に難渋した視神経脊髄炎の1例Oral presentation
- 第7回脊椎腫瘍・骨粗鬆症研究会, Dec. 2023超巨大な腰椎原発軟骨肉腫の1例Oral presentation
- 第31回日本腰痛学会, Dec. 2023ラット椎間板においてメカノレセプターTRPV4が恒常性維持と細胞外基質代謝に果たす役割[Invited]Nominated symposium
- 第31回日本腰痛学会, Dec. 2023ロコモ患者の脊椎矢状面アライメントに対するロコトレを軸とした外来通院リハビリテーション介入効果：2年以上の前向き追跡調査Oral presentation
- 第31回日本腰痛学会, Dec. 2023脊椎転移手術における術後合併症とそのリスク因子の検討Poster presentation
- Cervical Spine Research Society, Dec. 2023Predictive risk factors for the incidence of cervical spine instabilities in rheumatoid arthritis: a multicenter prospective study during over 10 yearsOral presentation
- 第32回日本脊椎インストゥルメンテーション学会, Nov. 2023脊椎転移に対する手術療法の予後延長効果Invited oral presentation
- 第57回日本側弯症学会, Nov. 2023成長期形成不全性すべり症に対する手術成績-全脊椎アライメントに注目して-Oral presentation
- 第50回日本臨床バイオメカニクス学会, Nov. 2023体幹装具採型における石膏包帯使用時と3Dデジタルスキャナ使用時の比較検討Oral presentation
- 第50回日本臨床バイオメカニクス学会, Nov. 2023GCIB照射がPEEK製椎弓根スクリューの引き抜き強度に与える影響Oral presentation
- 第2回首下がり研究会, Oct. 2023下咽頭癌に対する放射線療法後の頚胸椎骨壊死・後弯変形の一例Oral presentation
- 第60回脊椎外科を学ぶ会, Oct. 2023手術を検討した脊髄炎の一例Oral presentation
- 第4回BioSpine Japan, Oct. 2023Selective RNA interference of the mTOR signaling pathway protects against the progression of intervertebral disc degeneration through autophagy induction in a rat tail temporary static compression modelOral presentation
- 第38回日本整形外科学会基礎学術集会, Oct. 2023ｍTORシグナル経路への選択的なRNA干渉はラット尾椎椎間板組織において変性抑止効果を有するOral presentation
- 第38回日本整形外科学会基礎学術集会, Oct. 2023RNA干渉法とCRISPR–Cas9システムを用いたmTORシグナル経路の選択的阻害がもたらすヒト椎間板変性抑止効果の比較Oral presentation
- 第38回日本整形外科学会基礎学術集会, Oct. 2023ラット椎間板におけるTransient Receptor Potential Vanilloid 4 (TRPV4)阻害はオートファジーと細胞外基質合成を抑制するOral presentation
- 第38回日本整形外科学会基礎学術集会, Oct. 2023Transient Receptor Potential Vanilloid 4 (TRPV4)活性化によるラット椎間板髄核細胞のオートファジーと細胞外基質合成の促進Oral presentation
- 第141回中部日本整形外科災害外科学会, Oct. 2023硬膜欠損を伴う脳表ヘモジデリン沈着症に対して硬膜閉鎖術を行った1例Oral presentation
- The 58th Scoliosis Research Society Annual Meeting, Sep. 2023Long-term Results of Pedicle Screw Fixation for Patients with Adolescent Idiopathic Scoliosis（AIS）: CT Evaultaion at 10 Years after SurgeryPoster presentation
- The 58th Scoliosis Research Society Annual Meeting, Sep. 2023Autofusion at Costovertebral Joints after Posterior Fusion with Thoracic Pedicle Screws for Adolescent Idiopathic Scoliosis(AIS) -CT evaluation at 10 years follow-up after surgeryPoster presentation
- 第11回Japan Association of Spine surgeons with Ambition, Aug. 2023脊椎転移手術における悪性度別手術成績比較Oral presentation
- 第56回日本整形外科学会骨軟部腫瘍学術集会, Jul. 2023脊椎転移手術における悪性度別手術成績比較Oral presentation
- 第60回日本リハビリテーション医学会学術集会, Jun. 2023症候性脊椎転移に対する後方除圧固定術は術後化学療法の継続/導入を可能にするPoster presentation
- 第6回脊椎腫瘍・骨粗鬆症研究会, Jun. 2023腫瘍脊椎骨全摘術後にIMRT施行も 再発を繰り返す悪性神経鞘腫の1例Oral presentation
- 第96回日本整形外科学会学術総会, May 202380歳以上の超高齢脊椎転移患者に対する脊椎転移手術の治療成績の検討－70歳未満の脊椎転移患者と比較して－Oral presentation
- 第96回日本整形外科学会学術総会, May 2023「ロコモ」患者の脊柱・骨盤・下肢アライメントにおける「ロコトレ」リハビリテーション介入効果－2年以上の前向き追跡調査－Oral presentation
- 第96回日本整形外科学会学術総会, May 2023脊椎転移術後創離開のリスク因子の検討と予防のための新たな試み ―Curved Skin Incision―Poster presentation
- The 49th Annual Meeting, International Society for the Study of the Lumbar Spine, May 2023Selective interference of Raptor/mTORC1 protects against the progression of intervertebral disc degeneration through autophagy induction in a rat tail temporary static compression modelPoster presentation
- The 49th Annual Meeting, International Society for the Study of the Lumbar Spine, May 2023Surgical treatment for symptomatic spinal metastasis enables continuation/introduction of chemotherapyPoster presentation
- The 49th Annual Meeting, International Society for the Study of the Lumbar Spine, May 2023Age and disc wedging are independent risk factors for recurrent herniation after microendoscopic discectomyPoster presentation
- The 49th Annual Meeting, International Society for the Study of the Lumbar Spine, May 2023Transient Receptor Potential Vanilloid 4 (TRPV4) activation promotes autophagy and increases extracellular matrix synthesis through AMPK pathway in rat intervertebral disc cellsOral presentation
- The 49th Annual Meeting, International Society for the Study of the Lumbar Spine, May 2023Effects of sustained locomotion training rehabilitation on the spine–pelvis–lower extremity alignment in outpatients with locomotive syndrome: a prospective >2-year cohort studyOral presentation
- The 2nd International Meeting, BioSpine AsiaPacific, May 2023Adiponectin receptor agonist AdipoRon prevents the progression of intervertebral disc degeneration in a rat tail puncture modelOral presentation
- The 2nd International Meeting, BioSpine AsiaPacific, May 2023Efficacy of Smart Glasses for Percutaneous Pedicle Screw InsertionOral presentation
- The 2nd International Meeting, BioSpine AsiaPacific, May 2023Comparison in the accuracy of thoraco-lumbo-sacral orthosis designed by a conventional contact casting technique with a plaster bandage versus by a new non-contact 3D digital scanning techniqueOral presentation
- The 2nd International Meeting, BioSpine AsiaPacific, May 2023Effects of a probe with an electrical conductivity-measuring device on pedicle screw insertion in patients with severe syndromic or neuromuscular scoliosisOral presentation
- The 49th Annual Meeting, International Society for the Study of the Lumbar Spine, May 2023Transient Receptor Potential Vanilloid 4 (TRPV4) knockdown decreases extracellular matrix synthesis via autophagy suppression in rat intervertebral discOral presentation
- The 49th Annual Meeting, International Society for the Study of the Lumbar Spine, May 2023Development of treatment for intervertebral disc degeneration by the selective interference of the mTOR signaling pathway using the CRISPR–Cas9 systemOral presentation
- The 49th Annual Meeting, International Society for the Study of the Lumbar Spine, May 2023Risk Factors for Wound Dehiscence after Spinal Metastasis Surgery and a New Preventative Approach - Curved Skin Incision -Poster presentation
- The 49th Annual Meeting, International Society for the Study of the Lumbar SpineA retrospective study about the possibility to avoid preoperative radiotherapy for the patients of spinal metastasis surgery: Another approach to reduce postoperative wound dehiscencePoster presentation
- The 49th Annual Meeting, International Society for the Study of the Lumbar SpineEfficacy of Smart Glasses for Percutaneous Pedicle Screw InsertionPoster presentation
- The 49th Annual Meeting, International Society for the Study of the Lumbar SpinePreventive effects on intervertebral disc degeneration of Adiponectin receptor agonist AdipoRon in a rat tail puncture modelPoster presentation
- The 49th Annual Meeting, International Society for the Study of the Lumbar SpineOutcomes of emergency surgery in patients with spinal metastases: A prospective cohort studyPoster presentation
- 第52回日本脊椎脊髄病学会学術集会, Apr. 2023Transient Receptor Potential Vanilloid 4 (TRPV4) 活性化によるラット椎間板髄核細胞のオートファジーと細胞外基質合成の促進Poster presentation
- 第52回日本脊椎脊髄病学会学術集会, Apr. 2023ラット尾椎穿刺モデルを用いたアディポネクチン受容体アゴニストAdipoRonの椎間板細胞へ与える影響に関する研究Poster presentation
- 第52回日本脊椎脊髄病学会学術集会, Apr. 2023ラット椎間板においてTransient Receptor Potential Vanilloid 4 (TRPV4)がオートファジーと細胞外マトリクス合成へ与える影響Poster presentation
- 第52回日本脊椎脊髄病学会学術集会, Apr. 2023特発性側弯症に対する矯正固定術後のpedicle screwの長期経過 ―術後10年経過CTによる検討―Oral presentation
- 第52回日本脊椎脊髄病学会学術集会, Apr. 2023ラット尾椎椎間板におけるRaptor/mTORC1への選択的なRNA遺伝子干渉はオートファジーを誘導するとともに椎間板変性進行に対して抑制的に作用するOral presentation
- 第52回日本脊椎脊髄病学会学術集会, Apr. 2023CRISPR-Cas9システムを用いたmTORシグナル経路の選択的阻害による椎間板変性への新規治療法の開発Oral presentation
- 第52回日本脊椎脊髄病学会学術集会, Apr. 2023上位腰椎分離症における骨癒合不良因子の検討Oral presentation
- 第52回日本脊椎脊髄病学会学術集会, Apr. 2023脊椎転移手術における術後合併症とそのリスク因子の検討Oral presentation
- 第52回日本脊椎脊髄病学会学術集会, Apr. 2023放射線治療施行後に脊椎転移手術が必要となった症例の検討 ―術後創離開リスク低減のために―Oral presentation
- 第52回日本脊椎脊髄病学会学術集会, Apr. 2023症候性脊椎転移に対する後方除圧固定術は術後化学療法の継続/導入に有効であるOral presentation
- 第52回日本脊椎脊髄病学会学術集会, Apr. 2023脊椎転移術後創離開のリスク因子の検討と予防のための新たな試み ―Curved Skin Incision―Poster presentation
- 第52回日本脊椎脊髄病学会学術集会, Apr. 2023非ダウン症患児の環軸椎不安定症に対する後方固定術の治療成績Poster presentation
- 第52回日本脊椎脊髄病学会学術集会, Apr. 2023特発性側弯症に対する矯正固定術後の肋椎関節癒合 ―術後10年CTによる検討―Poster presentation
- 第52回日本脊椎脊髄病学会学術集会, Apr. 2023経皮的椎弓根スクリュー挿入におけるスマートグラスの有用性についてOral presentation
- 第52回日本脊椎脊髄病学会学術集会, Apr. 2023ロコモ患者の脊柱・骨盤・下肢アライメントに対するロコトレ通院リハビリテーション介入効果 ―2年以上の前向き追跡調査―Oral presentation
- 第52回日本脊椎脊髄病学会学術集会, Apr. 2023転移性脊椎腫瘍に対する姑息的手術の成績[Invited]Public symposium
- 第140回中部日本整形外科災害外科学会・学術集会脊椎転移手術後全身状態 早期悪化症例の検討 ー術前血液検査結果からみた危険因子ーPublic symposium
- Seminar for Safe Cervical Spine Surgery 2023, Mar. 2023中下位頚椎後方手術：Instrumentation[Invited]Public discourse
- 第24回圧迫性脊髄症研究会, Mar. 2023頚胸椎後方除圧術後に生じた浸出液産生浮遊性血腫の一例Oral presentation
- 第22回日本再生医療学会総会, Mar. 2023難治性骨軟部疾患に対するゼラチンハイドロゲルを用いた新たなる治療法の開発Oral presentation
- 第13回日本成人脊柱変形学会, Mar. 2023重症骨粗鬆症患者のlong fusionで近位端でのポリエチレンテープの使用はPJKに伴う再手術を抑制するOral presentation
- 第13回日本成人脊柱変形学会, Mar. 2023ロコトレ通院リハビリテーションによるロコモ患者の脊柱アライメント改善効果：2年以上の前向き追跡調査Oral presentation
- 第13回日本成人脊柱変形学会, Mar. 2023体幹コルセット採型における石膏包帯使用時と3Dデジタルスキャナ使用時の比較検討Oral presentation
- The 13th Cervical Spine Research Society Asia Pacific Section, Mar. 2023Surgical outcomes and predictive risk factors for cervical spine metastasis: a prospective study of 46 casesOral presentation
- 第59回脊椎外科を学ぶ会, Mar. 2023脳脊髄液漏出症に脳表ヘモジデリン沈着症を合併した1例Oral presentation
- 第35回日本軟骨代謝学会, Mar. 2023ラット椎間板恒常性維持へのオートファジーの関与：Atg5に対するRNA干渉を用いた細胞・動物実験による検討[Invited]Invited oral presentation
- 第35回日本軟骨代謝学会, Mar. 2023CRISPR-Cas9システムとRNA干渉法を用いたmTORシグナル経路の選択的阻害による脊椎椎間板変性治療効果の比較Poster presentation
- The 69th Annual Meeting, Orthopaedic Research Society, Feb. 2023Transient Receptor Potential Vanilloid 4 (TRPV4) knockdown decreases extracellular matrix synthesis via autophagy suppression in rat intervertebral discOral presentation
- The 69th Annual Meeting, Orthopaedic Research Society, Feb. 2023Development of treatment for degenerative disc disease by the selective gene silencing of mTOR signaling using the RNA interference and CRISPR–Cas9 systemsPoster presentation
- The 69th Annual Meeting, Orthopaedic Research SocietyThe efficacy of Adiponectin receptor agonist AdipoRon against intervertebral disc degeneration on rat tail puncture modePoster presentation
- 第18回兵庫県転移性骨腫瘍治療研究会, Feb. 2023脊椎転移手術における合併症発生リスク因子に関する研究Oral presentation
- 久光製薬株式会社医薬情報担当者教育研修会, Jan. 2023難治性疼痛・神経痛を有する脊椎疾患の治療戦略～ジクロフェナクナトリウム経皮吸収型持続性疼痛治療剤への期待～[Invited]Public discourse
- 第5回脊椎腫瘍・骨粗鬆症研究会, Dec. 2022診断に難渋した視神経脊髄炎の1例Oral presentation
- “痛み”の治療を考える会, Nov. 2022脊椎疾患の治療で難渋する神経障害性疼痛の診断と治療[Invited]Public discourse
- 第56回脊椎外科を学ぶ会, Nov. 2022頸椎症性脊髄症術後1ヶ月で硬膜外血腫が生じた２例Oral presentation
- 第139回中部日本整形外科災害外科学会・学術集会, Oct. 2022脊椎転移手術後全身状態 早期悪化症例の検討 ー術前血液検査結果からみた危険因子ーOral presentation
- 第30回日本腰痛学会脊椎転移に対する集学的治療は予後を延長させるOral presentation
- 第84回神戸整形外科セミナー, Oct. 2022難治性疼痛を有する脊椎疾患の治療戦略～トラマドール製剤を中心に～[Invited]Public discourse
- The 3rd BioSpine Japan, Oct. 2022Development of treatment for intervertebral disc degeneration by selective interference of the mTOR signaling pathway using the CRISPR–Cas9 systemOral presentation
- 第37回日本整形外科学会基礎学術総会, Oct. 2022体幹コルセット採型における石膏包帯使用時と3Dデジタルスキャナ使用時の精度の比較Oral presentation
- 第37回日本整形外科学会基礎学術総会, Oct. 2022椎間板におけるTRPV4のオートファジーと細胞外マトリクス合成への関与Oral presentation
- 第37回日本整形外科学会基礎学術総会, Oct. 2022アディポネクチン受容体アゴニストAdipoRonの椎間板細胞へ与える影響に関する研究Poster presentation
- 第37回日本整形外科学会基礎学術総会, Oct. 2022椎間板恒常性維持を目指した変性予防・組織修復の試み[Invited]Nominated symposium
- ジクトルテープ75mg効能追加記念web講演会in神戸, Sep. 2022腰痛症や頚肩腕症候群に対する治療戦略～ジクロフェナクナトリウム経皮吸収型持続性疼痛治療剤への期待～[Invited]Public discourse
- 第54回脊椎同好会, Sep. 2022頸椎症性脊髄症術後1ヶ月で硬膜外血腫が生じた１例Oral presentation
- 第29回日本脊椎・脊髄神経手術手技学会, Sep. 2022当院における脊椎転移術後創離開のリスク因子の検討と予防のための新たな試みOral presentation
- The 10th Japan Association of Spine surgeons with Ambition, Aug. 2022脊椎転移手術における術後合併症リスク因子の検討Oral presentation
- 灘区医師会生涯教育Web講演会, Jul. 2022脊椎疾患で生じる中枢性・末梢性神経障害性疼痛の診断と治療[Invited]Public discourse
- 神戸 Pain Relief, Jul. 2022脊椎疾患で生じる難治性疼痛の治療戦略～オピオイド誘発性便秘症対策も含めて～[Invited]Public discourse
- 第4回脊椎腫瘍・骨粗鬆症研究会, Jul. 2022TESを施行できなかった胸椎動脈瘤様骨嚢腫の1例Oral presentation
- The 12nd Annual Meeting, Cervical Spine Research Society Asia Pacific Section, Jun. 2022Outcomes and risk factors for cervical spine metastasis surgery: a prospective study of 46 casesOral presentation
- 加西市医師会学術講演会, Jun. 2022脊椎疾患の診療で経験する神経障害性疼痛の診断と治療[Invited]Public discourse
- 北神整形外科Webセミナー, May 2022脊椎疾患の診療で遭遇する神経障害性疼痛の診断と治療[Invited]Public discourse
- 第95回日本整形外科学会学術総会, May 2022「ロコモ」患者における「ロコトレ」体操の脊柱アライメント・立位バランス改善効果Poster presentation
- 第95回日本整形外科学会学術総会, May 2022椎間板再生の基礎と臨床（未来）[Invited]Nominated symposium
- Seminar for Safe Cervical Spine Surgery 2022, May 2022重度頚椎後弯症例の1例[Invited]Oral presentation
- The 48th Annual Meeting, International Society for the Study of the Lumbar Spine, May 2022The efficacy of growth differentiation factor-6 on the three-dimensionally cultured human intervertebral disc cells and rat tail puncture modelPoster presentation
- The 48th Annual Meeting, International Society for the Study of the Lumbar Spine, May 2022Protective roles of Atg5-dependent autophagy against human and rat disc cellular apoptosis and senescence: an in-vitro and in-vivo loss-of-function studyOral presentation
- The 48th Annual Meeting, International Society for the Study of the Lumbar Spine, May 2022A retrospective study about the outcome of spinal metastasis surgery for the patients aged 80 years or older compared to those aged younger than 70 yearsPoster presentation
- The 48th Annual Meeting, International Society for the Study of the Lumbar Spine, May 2022Transient Receptor Potential Vanilloid 4 (TRPV4) knockdown suppresses autophagy in rat intervertebral disc cellsPoster presentation
- The 48th Annual Meeting, International Society for the Study of the Lumbar Spine, May 2022Improved sagittal spinal alignment and standing body balance by a “locomotion training” rehabilitation program in patients with “locomotive syndrome”Oral presentation
- The 48th Annual Meeting, International Society for the Study of the Lumbar Spine, May 2022Polyethylene tapes at the proximal end of fusion reduce the revision rate related with Proximal Junctional Kyphosis in long spinal fusionsPoster presentation
- The 48th Annual Meeting, International Society for the Study of the Lumbar Spine, May 2022Prospective study for risk factors of postoperative complication of surgery for spinal metastasisPoster presentation
- The 48th Annual Meeting, International Society for the Study of the Lumbar SpineEffect of Adiponectin receptor agonist AdipoRon on human intervertebral disc cell in a three-dimensional cell culture and rat tail puncture modelPoster presentation
- The 48th Annual Meeting, International Society for the Study of the Lumbar SpineSurgical outcome of scoliosis with muscular dystrophyPoster presentation
- 第51回日本脊椎脊髄病学会学術集会, Apr. 2022内視鏡下腰椎椎間板ヘルニア摘出術(MED)における術後再発危険因子の検討Oral presentation
- 第51回日本脊椎脊髄病学会学術集会, Apr. 2022脊椎転移手術における術後合併症リスク因子の検討Oral presentation
- 第51回日本脊椎脊髄病学会学術集会, Apr. 2022「ロコモ」患者への「ロコトレ」体操の脊柱アライメント・立位バランス改善効果Oral presentation
- 第51回日本脊椎脊髄病学会学術集会, Apr. 2022ラット尾部穿刺モデルを用いたGrowth Differentiation Factor-6の椎間板細胞に与える影響に関する研究Oral presentation
- 第51回日本脊椎脊髄病学会学術集会, Apr. 2022体幹コルセット採型における石膏包帯使用時と3Dデジタルスキャナを使用時の比較検討Oral presentation
- 第51回日本脊椎脊髄病学会学術集会, Apr. 202280歳以上の超高齢脊椎転移患者に対する手術成績の検討－70歳未満の脊椎転移患者と比較して－Poster presentation
- 第51回日本脊椎脊髄病学会学術集会, Apr. 2022アディポネクチン受容体アゴニストAdipoRonの椎間板細胞へ与える影響に関する研究Poster presentation
- 第51回日本脊椎脊髄病学会学術集会GCIB照射がPEEK製椎弓根スクリューの引き抜き強度に与える影響Invited oral presentation
- 第457回整形外科集談会京阪神地方会, Feb. 2022頚胸椎後縦靭帯骨化症術後に生じた滲出液産生腫瘤の1例Oral presentation
- 第57回脊椎外科を学ぶ会, Feb. 2022馬尾生検により確定診断に至った原発性馬尾神経悪性リンパ腫の一例Oral presentation
- The68th Annual Meeting, Orthopaedic Research SocietyEffect of Adiponectin receptor agonist AdipoRon on human intervertebral disc cell in a three-dimensional cell culture and rat tail puncture modelPoster presentation
- The 68th Annual Meeting, Orthopaedic Research SocietyThe efficacy of growth differentiation factor-6 on the three-dimensionally cultured human intervertebral disc cells and rat tail puncture modelPoster presentation
- 第2回 BioSpine Japan, Jan. 2022Involvement of Atg5-dependent autophagy in the homeostasis maintenance of rat intervertebral discs: an in-vitro and in-vivo studyOral presentation
- 整形外科連携WEBセミナー, Oct. 2021脊椎変性疾患に関連した神経障害性疼痛の診断と治療[Invited]Public discourse
- 第6回兵庫ロコモと骨粗鬆症を語る会, Oct. 2021「ロコモティブシンドローム（ロコモ）」に対する「ロコモーショントレーニング（ロコトレ）」の脊柱アライメント・立位バランス改善効果[Invited]Public discourse
- 第56回脊椎外科を学ぶ会, Oct. 2021頚胸椎後縦靭帯骨化症後方術後に生じた滲出液産生腫瘤の1例 –コロコロの正体-Oral presentation
- 第36回日本整形外科学会基礎学術総会, Oct. 2021細胞低接着性コラーゲン（Low Adhesive Scaffold Collagen: LASCol）を用いた脊椎椎間板組織修復の試み[Invited]Nominated symposium
- 第36回日本整形外科学会基礎学術総会, Oct. 2021三次元細胞培養を用いたアディポネクチン受容体アゴニストAdipoRon投与に対するヒト椎間板細胞へ与える影響の検討Oral presentation
- 第15回兵庫県骨転移治療研究会, Oct. 2021当院における脊椎転移術後創離開のリスク因子の検討と予防のための新たな試みOral presentation
- 第30回日本脊椎インストゥルメンテーション学会GCIB照射がPEEK製椎弓根スクリューの引き抜き強度に与える影響Invited oral presentation
- 第53回脊椎外科同好会, Sep. 2021診断に難渋した硬膜内髄外腫瘍の1例Oral presentation
- Orthopaedics Web Seminar, Sep. 2021整形外科・脊椎外科に関連した神経障害性疼痛の診断と治療－特に保存治療例と術発症例について－[Invited]Public discourse
- 第2回脊椎腫瘍・骨粗鬆症研究会, Jun. 2021Separation surgery後にIMRTを 行った胸椎原発骨肉腫の1例Oral presentation
- 北神戸整形外科Webセミナー, Jun. 2021脊椎疾患関連の神経障害性疼痛の診断と治療[Invited]Public discourse
- The47th Annual Meeting, International Society for the Study of the Lumbar SpineTrends and measures against postoperative wound dehiscence after surgery for spinal metastasis.Poster presentation
- The47th Annual Meeting, International Society for the Study of the Lumbar SpineA retrospective analysis of patients with early deterioration of general condition after spinal metastasis surgery: Could we predict the early deterioration with the preoperative blood test?Poster presentation
- The47th Annual Meeting, International Society for the Study of the Lumbar SpineImproved sagittal spinal alignment and balance by a “locomotion training” rehabilitation program in patients with “locomotive syndrome.Poster presentation
- The47th Annual Meeting, International Society for the Study of the Lumbar SpineInvolvement of autophagy in human lumbar spine herniated and degenerative disc diseases.Poster presentation
- The47th Annual Meeting, International Society for the Study of the Lumbar SpineMaintenance of rat intervertebral disc homeostasis via Atg5-dependent autophagy in vitro and in vivoPoster presentation
- The47th Annual Meeting, International Society for the Study of the Lumbar SpineEffect of Adiponectin receptor agonist AdipoRon on human intervertebral disc cell in a three-dimensional cell culturePoster presentation
- The47th Annual Meeting, International Society for the Study of the Lumbar SpineEfficacy of growth differentiation factor-6 on three-dimensionally cultured human intervertebral disc cells and a rat tail puncture modelPoster presentation
- The47th Annual Meeting, International Society for the Study of the Lumbar SpinePolyethylene tapes at the proximal end in long spinal fusions reduce the revision rate due to Proximal Junctional KyphosisPoster presentation
- 第94回日本整形外科学会学術総会広範囲矯正固定手術における固定近位端のポリエチレンテープの使用はproximal junctional kyphosisに伴う再手術率を低下させるPoster presentation
- 第94回日本整形外科学会学術総会「ロコモ」患者へ「ロコトレ」体操が及ぼす脊柱アライメントと立位バランスの改善効果Poster presentation
- 第94回日本整形外科学会学術総会術前血液検査結果から見た脊椎転移手術後全身状態早期悪化の危険因子の検討Oral presentation
- 第94回日本整形外科学会学術総会脊椎転移に対する集学的治療の効果と限界[Invited]Nominated symposium
- 第94回日本整形外科学会学術総会費用対効果から見た脊椎転移に対する手術加療の効果と課題[Invited]Nominated symposium
- 第50回日本脊椎脊髄病学会学術集会, Apr. 2021広範囲矯正固定手術における固定近位端のポリエチレンテープの使用はProximal Junctional Kyphosis及びそれに伴う再手術率を低下させるPoster presentation
- 第50回日本脊椎脊髄病学会学術集会, Apr. 2021「ロコモ」患者に対する「ロコトレ」体操の脊柱アラインメント・立位バランス改善効果Oral presentation
- 第50回日本脊椎脊髄病学会学術集会, Apr. 2021腰椎椎間板変性検体とヘルニア検体におけるオートファジー活性は疾患よりも年齢と変性度に依存するOral presentation
- 第50回日本脊椎脊髄病学会学術集会, Apr. 2021三次元培養したヒト椎間板細胞とラット尾部穿刺モデルにおける成長因子Growth differentiation factor 6投与の有効性Oral presentation
- 第50回日本脊椎脊髄病学会学術集会, Apr. 2021三次元細胞培養を用いたアディポネクチン受容体アゴニストAdipoRon投与に対するヒト椎間板細胞へ与える影響の検討Oral presentation
- 第50回日本脊椎脊髄病学会学術集会, Apr. 2021ラット椎間板の恒常性維持に関するAtg5依存症オートファジーの役割Oral presentation
- 第50回日本脊椎脊髄病学会学術集会, Apr. 2021脊椎転移手術の術後創離開に関する対策Oral presentation
- 第50回日本脊椎脊髄病学会学術集会, Apr. 2021分離すべり症に対する椎間孔拡大を主目的とするMIS-TLIFの手術成績 —分離部除圧は必要か？—Oral presentation
- 第50回日本脊椎脊髄病学会学術集会, Apr. 2021低侵襲腰椎椎体間固定術（MIS-TLIF）における術後矯正損失を起こす危険因子の検討Oral presentation
- 第50回日本脊椎脊髄病学会学術集会, Apr. 2021青年期仙骨疲労骨折の治療経験Oral presentation
- 第50回日本脊椎脊髄病学会学術集会, Apr. 2021腰椎分離症に対するCTによる骨癒合評価と被爆量から考える問題点Oral presentation
- 第136回中部日本整形外科災害外科学会学術集会, Apr. 2021, Japanese広範囲矯正固定手術において固定近位端でのポリエチレンテープの使用はPJKに伴う再手術率を低下させるPublic symposium
- 第136回中部日本整形外科災害外科学会学術集会, Apr. 2021, Japaneseラット椎間板恒常性維持に対するAtg5依存性オートファジーの関与：ラット細胞・動物実験の検討Oral presentation
- 痛みの治療フォーラム ～Web Seminar～, Feb. 2021, Japanese脊椎疾患由来の神経障害性疼痛の診断と治療[Invited]Invited oral presentation
- 第20回Takasago Orthopaedic Clinical Conference（高砂整形外科医会）, Feb. 2021, Japanese脊椎疾患から生じる神経障害性疼痛の診断と治療[Invited]Invited oral presentation
- The 67th Annual Meeting, Orthopaedic Research Society, Feb. 2021, EnglishInvolvement of Atg5-dependent autophagy in maintaining rat intervertebral disc homeostasisOral presentation
- The 67th Annual Meeting, Orthopaedic Research Society, Feb. 2021, EnglishEffect of Adiponectin receptor agonist AdipoRon on human intervertebral disc cell in a three-dimensional cell culturePoster presentation
- The 67th Annual Meeting, Orthopaedic Research Society, Feb. 2021, EnglishThe efficacy of growth differentiation factor-6 on the three-dimensionally cultured human intervertebral disc cells and rat tail puncture modelPoster presentation
- 第55回脊椎外科を学ぶ会, Feb. 2021, Japanese軟骨肉腫に対して肋骨椎体合併切除術を施行した1例Oral presentation
- 第22回圧迫性脊髄症研究会, Jan. 2021Separation surgery後に強度変調放射線治療(IMRT)を行った脊椎腫瘍の2例Oral presentation
- 第10回DDS再生医療研究会, Dec. 2020, Japaneseがん骨転移局所制御に対する徐放化抗がん剤の有効性と安全性についての検討Oral presentation
- The 4th Annual Meeting, Korean Biospine Society, Dec. 2020, EnglishRoles of Atg5-dependent autophagy in rat intervertebral disc homeostasis: an implication of gene therapy approachOral presentation
- 第1回脊椎腫瘍・骨粗鬆症研究会, Dec. 2020, Japanese軟骨肉腫に対して肋骨部分椎体合併切除術を施行した1例Oral presentation
- 第28回日本腰痛学会, Oct. 2020, Japanese腰椎分離症において腰痛発症からの罹患期間が病期に及ぼす影響Oral presentation
- 第28回日本腰痛学会, Oct. 2020, Japanese青年期仙骨疲労骨折の治療経験Oral presentation
- 第6回神戸整形外科Clinical skill-up course, Nov. 2020, Japanese講師[Invited]Public discourse
- 第54回日本側彎症学会学術集会, Nov. 2020, Japanese小児脊柱変形初回矯正手術後の手術部位感染：多施設研究における病態と危険因子の解析Oral presentation
- 第54回日本側彎症学会学術集会, Nov. 2020, Japanese小児側弯症患者におけるインストゥルメント関連合併症の発生率とその特徴Oral presentation
- 第54回日本側彎症学会学術集会, Nov. 2020, Japanese小児脊柱変形に対する初回固定術後の予定外手術の頻度およびリスク因子に関する多施設研究Oral presentation
- 第54回日本側彎症学会学術集会, Nov. 2020, Japanese小児脊柱変形手術における神経合併症発生調査とリスク因子Oral presentation
- 第35回日本整形外科学会基礎学術集会, Oct. 2020, JapaneseGCIB照射がPEEK製椎弓根スクリューの引き抜き強度に与える影響Oral presentation
- 第35回日本整形外科学会基礎学術集会, Oct. 2020, Japanese三次元培地を用いた成長因子growth differentiation factor-6投与がヒト椎間板細胞に与える影響の検討Oral presentation
- 第35回日本整形外科学会基礎学術集会, Oct. 2020, Japaneseラット椎間板の恒常性維持におけるAtg5依存性オートファジーの関与Oral presentation
- 第20回日本Men’s Health医学会・シンポジウム1～疼痛・緩和ケアを考える～, Oct. 2020, Japanese脊椎疾患による神経障害性疼痛の診断と治療[Invited]Nominated symposium
- 第135回中部日本整形外科災害外科学会学術集会, Oct. 2020, Japanese脊椎転移手術の術後創離開に関する傾向と対策Public symposium
- 第53回日本整形外科学会骨軟部腫瘍学術集会, Sep. 2020, Japanese脊椎腫瘍に対するseparation surgeryとIMRTの併用による治療成績－7例のケースシリーズ－Poster presentation
- 第53回日本整形外科学会骨軟部腫瘍学術集会, Sep. 2020, Japaneseゼラチンハイドロゲルを用いた徐放化シスプラチン局所投与による新たなる骨転移治療Poster presentation
- Pain Live Symposium, Sep. 2020, Japaneseロコモ対策と脊椎疾患に対する薬物治療[Invited]Invited oral presentation
- 第49回日本リウマチの外科学会, Sep. 2020, Japaneseリウマチ性頚椎不安定性の進行と予後予測因子：10年以上に及ぶ前向き追跡調査結果[Invited]Nominated symposium
- 第49回日本脊椎脊髄病学会学術集会, Sep. 2020, Japanese三次元培地を用いた成長因子Growth differentiation factor 6投与がヒト椎間板細胞に与える影響の検討Poster presentation
- 第49回日本脊椎脊髄病学会学術集会, Sep. 2020, Japanese転移性頚椎腫瘍に対する後方手術成績と術後成績不良因子の検討Poster presentation
- 第49回日本脊椎脊髄病学会学術集会, Sep. 2020, Japanese脊椎転移手術における全身状態早期悪化例の検討－術前血液検査結果に着目して－Poster presentation
- 第49回日本脊椎脊髄病学会学術集会, Sep. 2020, Japaneseラット椎間板の恒常性維持におけるAtg5依存症オートファジーの関与Oral presentation
- 第49回日本脊椎脊髄病学会学術集会, Sep. 2020, Japanese徐放化シスプラチン局所投与による新たなる脊椎転移制御の試み－マウス骨転移モデルでの検討－Oral presentation
- 第49回日本脊椎脊髄病学会学術集会, Sep. 2020, JapaneseLong fusionにおいてポリエチレンテープの使用はProximal Junctional Kyphosis (PJK)に伴う再手術率を低下させるOral presentation
- 第49回日本脊椎脊髄病学会学術集会, Sep. 2020, Japanese仙骨骨折を合併した骨盤輪骨折に対するSacral-Aral-lliac Screwを用いた腰仙椎後側法固定術の中長期成績Oral presentation
- 第49回日本脊椎脊髄病学会学術集会, Sep. 2020, Japanese骨減少を伴ったRA重度頚椎病変に対する手術治療の工夫[Invited]Invited oral presentation
- 第49回日本脊椎脊髄病学会学術集会, Sep. 2020, Japaneseリウマチ性頚椎不安定性の進行と予後予測因子：5年以上・10年以上の前向き追跡調査結果[Invited]Invited oral presentation
- 第49回日本脊椎脊髄病学会学術集会, Sep. 2020, Japanese慢性腰痛症に対する薬物療法の合併症評価（肝腎機能を中心に）：日本脊椎脊髄病学会主導多施設前向き追跡調査Public symposium
- 第93回日本整形外科学会学術総会, Jun. 2020, Japanese頚椎転移の手術成績と成績不良因子の検討Oral presentation
- 第93回日本整形外科学会学術総会, Jun. 2020, JapaneseLong fusionにおける固定近位端の固定法の違いによるProximal Junctional Kyphosis(PJK)に伴う再手術率の比較検討Poster presentation
- 第93回日本整形外科学会学術総会, Jun. 2020, Japanese筋ジストロフィーに伴う脊柱変形の手術経験Poster presentation
- 第93回日本整形外科学会学術総会, Jun. 2020, Japanese「ロコトレ」体操が及ぼす「ロコモ」患者の脊柱アラインメントと体幹バランス改善効果Oral presentation
- 第57回日本リハビリテーション医学会学術集会, Aug. 2020, Japanese頸椎転移患者の手術成績と成績不良因子の検討－PS、QOLの推移から－Oral presentation
- 第73回神戸整形外科セミナー, Jul. 2020, Japanese脊椎疾患の神経障害性疼痛に対する治療戦略～ミロガバリンへの期待を含めて～[Invited]Keynote oral presentation
- 第134回中部日本整形外科災害外科学会学術集会, Apr. 2020, Japanese頸椎転移に対する後方手術成績と術後成績不良因子の検討Oral presentation
- 兵庫Pain Conference, Feb. 2020, Japaneseロコモティブシンドロームへの運動・薬物治療－脊椎疾患を中心に－[Invited]Invited oral presentation
- Pain Live Symposium in Kobe, Feb. 2020, Japanese脊椎疾患で生じる神経障害性疼痛の診断と治療[Invited]Invited oral presentation
- 第5回AKASHI Pharmacy Director Seminar, Feb. 2020, Japanese脊椎疾患に由来する神経障害性疼痛の診断と治療[Invited]Invited oral presentation
- 第12回兵庫県転移性骨腫瘍治療研究会, Feb. 2020, Japanese脊椎転移手術における早期成績不良例に関する検討Oral presentation
- The 66th Annual Meeting, Orthopaedic Research Society, Feb. 2020, EnglishInvolvement of Atg5-dependent autophagy in the maintenance of rat intervertebral disc homeostasis in vitro and in vivoPoster presentation
- The 66th Annual Meeting, Orthopaedic Research Society, Feb. 2020, EnglishThe local administration of gelatin hydrogel microspheres incorporating cisplatin enhanced anti-tumor effects with less side effects in vivo bone metastasis modelPoster presentation
- The 66th Annual Meeting, Orthopaedic Research Society, Feb. 2020, EnglishInvolvement of autophagy in human herniated and degenerative intervertebral disc diseasesPoster presentation
- 神戸市医師会学術講演会, Dec. 2019, Japaneseロコモティブシンドロームへの運動・薬物治療－脊椎疾患を中心に－[Invited]Keynote oral presentation
- 第9回DDS再生医療研究会, Dec. 2019, Japaneseゼラチンハイドロゲルを用いた徐放化シスプラチン局所投与によるがん骨転移局所制御Oral presentation
- 明石医師会内科医会学術講演会, Nov. 2019, Japanese脊椎疾患に関連した神経障害性疼痛の診断と治療[Invited]Invited oral presentation
- 神戸市整形外科カンファレンス, Nov. 2019, Japaneseロコモティブシンドロームの診断・評価・治療－脊椎疾患を中心に－[Invited]Keynote oral presentation
- The 47th Annual Meeting, Cervical Spine Research Society, Nov. 2019, EnglishSurgical outcome of cervical spine metastasis: a prospective study of 45 casesPoster presentation
- The 47th Annual Meeting, Cervical Spine Research Society, Nov. 2019, EnglishInvolvement of autophagy in human cervical spine degenerated and herniated discsOral presentation
- 塩野義製薬社内講演会, Oct. 2019, Japaneseロコモティブシンドロームへの運動・薬物治療介入－脊椎疾患を中心に－[Invited]Invited oral presentation
- The 1st Meeting, BioSpine Japan, Oct. 2019, EnglishA novel new method for bone metastasis using gelatin hydrogel incorporating anti-tumor drug as a sustained release systemOral presentation
- 第34回日本整形外科学会基礎学術集会, Oct. 2019, Japanese徐放化抗がん剤局所投与による新たなる骨転移制御の試みOral presentation
- 第34回日本整形外科学会基礎学術集会, Oct. 2019, Japaneseラット脊椎椎間板の恒常性維持におけるAtg5依存性オートファジーの関与Oral presentation
- 第34回日本整形外科学会基礎学術集会, Oct. 2019, Japanese腰椎椎間板におけるオートファジー活性は疾患よりも年齢と変性度に依存するOral presentation
- 第34回日本整形外科学会基礎学術集会, Oct. 2019, Japaneseオートファジーの制御による椎間板変性治療の可能性[Invited]Nominated symposium
- 兵庫県薬剤師会東播支部・兵庫県病院薬剤師会共催研修会, Sep. 2019, Japaneseロコモティブシンドロームに対する運動・薬物療法－脊椎疾患を中心に－[Invited]Invited oral presentation
- 高齢者医療病診連携の会, Sep. 2019, Japaneseロコモティブシンドロームに対する運動・薬物療法－脊椎疾患を中心に－[Invited]Invited oral presentation
- 第133回中部日本整形外科災害外科学会学術集会, Sep. 2019, Japanese治療に難渋したアテトーゼ型脳性麻痺性頚髄症の1例Oral presentation
- 第27回日本腰痛学会, Sep. 2019, Japaneseラット脊椎椎間板の恒常性維持におけるAtg5依存性オートファジーの関与Oral presentation
- 第26回日本脊椎・脊髄神経手術手技学会学術集会, Sep. 2019, JapaneseSurgical outcome of spine surgery for spinal metastasis[Invited]Nominated symposium
- 第8回Japan Association of Spine Surgeons with Ambition, Aug. 2019, Japanese脊椎転移手術における早期成績不良例に関する検討Oral presentation
- 第52回脊椎外科同好会, Aug. 2019, Japanese重度頚椎後弯に対して一期的前後方手術を施行した1例～knack&pitfalls～Oral presentation
- 明石市医師会外科系医会講演会, Jul. 2019, Japaneseロコモティブシンドロームに対する運動療法と薬物療法[Invited]Invited oral presentation
- 兵庫県薬剤師会摂丹支部・兵庫県病院薬剤師会摂丹支部共催研修会, Jun. 2019, Japanese末梢性神経障害性疼痛における薬剤選択、治療について－整形外科・脊髄外科の立場から－[Invited]Invited oral presentation
- 第44回日本外科系連合学会学術集会, Jun. 2019脊椎転移に対する集学的治療は予後を延長させる[Invited]Nominated symposium
- 第1回Kansai Cervical Spine研究会, Jun. 2019, Japanese頸椎転移の手術成績－前向きコホート研究による45例の検討－Oral presentation
- The 46th Annual Meeting, International Society for the Study of the Lumbar Spine, Jun. 2019, EnglishSelective mTORC1 inhibition by temsirolimus protects human disc nucleus pulposus cells through Akt and autophagy inductionPoster presentation
- The 46th Annual Meeting, International Society for the Study of the Lumbar Spine, Jun. 2019, EnglishInvolvement of ATG5-dependent autophagy in the maintenance of rat intervertebral disc homeostasis in vitro and in vivoPoster presentation
- The 46th Annual Meeting, International Society for the Study of the Lumbar Spine, Jun. 2019, EnglishWhat makes the early outcome of spinal metastasis surgery unsatisfactory? A retrospective studyPoster presentation
- The 46th Annual Meeting, International Society for the Study of the Lumbar Spine, Jun. 2019, EnglishThe factor lowering the cost-utility of surgical treatment for patients with metastatic spinal tumorPoster presentation
- The 46th Annual Meeting, International Society for the Study of the Lumbar Spine, Jun. 2019, EnglishThe role of integrinα5β1 in the alteration of notochordal cell induced by dynamic loadingPoster presentation
- The 46th Annual Meeting, International Society for the Study of the Lumbar Spine, Jun. 2019, EnglishEffect of spinal surgery on prognosis in patients with symptomatic spinal metastasis: a prospective cohort studyOral presentation
- The 46th Annual Meeting, International Society for the Study of the Lumbar Spine, Jun. 2019, EnglishInvolvement of autophagy in human lumbar spine degenerated and herniated disc diseasesPoster presentation
- The 46th Annual Meeting, International Society for the Study of the Lumbar Spine, Jun. 2019, EnglishImprovement of the sagittal alignment and balance of the spine through a “locomotion training” rehabilitation program in patients with locomotive syndromePoster presentation
- The 46th Annual Meeting, International Society for the Study of the Lumbar Spine, Jun. 2019, EnglishAutophagy plays protective roles against human disc cellular apoptosis and senescence, but not affect extracellular matrix degradationOral presentation
- 第56回日本リハビリテーション医学会学術集会, Jun. 2019「ロコトレ」理学療法プログラムによる「ロコモ」患者の脊柱アライメントと体幹バランス改善効果Oral presentation
- 第92回日本整形外科学会学術総会, May 201970歳以上の脊椎転移患者における手術効果とその経時的推移Oral presentation
- 第92回日本整形外科学会学術総会, May 2019脊椎転移の症候化リスク因子に関する前向き研究Oral presentation
- 第92回日本整形外科学会学術総会, May 2019「ロコトレ」体操による「ロコモ」患者の脊柱アライメントと体幹バランス改善効果Oral presentation
- 第132回中部日本整形外科災害外科学会学術集会, Apr. 201970歳以上の脊椎転移患者における手術成績Oral presentation
- 第48回日本脊椎脊髄病学会学術集会, Apr. 2019腰椎変性すべり症に対する前後合併椎体間固定術と後方椎体間固定術の手術成績－多施設比較検討－Poster presentation
- 第48回日本脊椎脊髄病学会学術集会, Apr. 2019動的圧迫負荷による脊索由来細胞の変化とintegrinα5β1の果たす役割Poster presentation
- 第48回日本脊椎脊髄病学会学術集会, Apr. 2019mTOR阻害薬テムシロリムスはAktとオートファジーの誘導しヒト椎間板髄核細胞に保護作用を来すPoster presentation
- 第48回日本脊椎脊髄病学会学術集会, Apr. 2019術後10年以上に経過観察しえた胸腰椎・腰椎部先天性後側弯症・後弯症における16症例の立位矢状面バランスの検討Poster presentation
- 第48回日本脊椎脊髄病学会学術集会, Apr. 2019脊椎転移手術における早期成績不良例に関する検討Poster presentation
- 第48回日本脊椎脊髄病学会学術集会, Apr. 2019骨転移Cancer Boardの効果と課題Poster presentation
- 第48回日本脊椎脊髄病学会学術集会, Apr. 2019筋ジストロフィーに伴う脊柱変形の手術経験Poster presentation
- 第48回日本脊椎脊髄病学会学術集会, Apr. 2019脊椎インスツルメント術後創部感染に対する局所閉鎖陰圧療法の有用性と失敗因子の検討Poster presentation
- 第48回日本脊椎脊髄病学会学術集会, Apr. 2019成人脊柱変形手術において多椎間TLIFとPonte osteotomyのみで十分な腰椎前弯を獲得できるか？Poster presentation
- 第48回日本脊椎脊髄病学会学術集会, Apr. 201970歳以上の転移性脊椎腫瘍患者における手術成績Oral presentation
- 第48回日本脊椎脊髄病学会学術集会, Apr. 2019転移性脊椎腫瘍に対する手術加療の費用対効用を低下させる因子の検討
- 第48回日本脊椎脊髄病学会学術集会, Apr. 2019脊椎椎間板におけるオートファジー活性は疾患よりも年齢と変性度に依存する（腰椎椎間板ヘルニア検体と固定術検体との比較）Poster presentation
- 第48回日本脊椎脊髄病学会学術集会, Apr. 2019症候性側弯症手術における電磁気センサー付き椎弓根プローブの有用性Oral presentation
- 第48回日本脊椎脊髄病学会学術集会, Apr. 2019「ロコトレ」リハビリプログラムによる「ロコモ」患者の脊柱アライメントと体幹バランス改善効果Oral presentation
- 第31回下西集談会, Mar. 2019, Japanese, 下京西部医師会, 京都, Domestic conference認知機能がロコモ度に及ぼす影響についてOral presentation
- 第9回日本成人脊柱変形学会, Mar. 2019, Japanese, 日本成人脊柱変形学会, 東京, Domestic conferenceロコモ体操に準じた理学療法プログラムの脊柱アライメントと体幹バランス改善効果Oral presentation
- The 10th Annual Meeting of Cervical Spine Research Society Asia Pacific Section, Mar. 2019, English, Cervical Spine Research Society Asia Pacific Section, 横浜, International conferenceInvolvement of autophagy in human cervical spine discs from spondylosis or herniationOral presentation
- 第10回兵庫県骨転移治療研究会, Feb. 2019症候性脊椎転移の発生リスクに関する前向き研究Invited oral presentation
- 第51回脊椎外科を学ぶ会, Feb. 2019, Japanese, 大阪, Domestic conference脳性麻痺性頚髄症に対して繰り返し手術を要した1例Oral presentation
- The 65th Annual Meeting of Orthopaedic Research Society, Feb. 2019, English, Orthopaedic Research Society, Austin, International conferenceThe local administration of sustained release of cisplatin by gelatin hydrogel enhanced anti-tumor effect and reduced side effect: the preliminary study using bone metastasis animal modelPoster presentation
- The 65th Annual Meeting of Orthopaedic Research Society, Feb. 2019, English, Orthopaedic Research Society, Austin, International conferenceRegenerative Potential of the Damaged Intervertebral Disc by the Low Adhesive Scaffold Collagen (LASCol)Poster presentation
- The 65th Annual Meeting of Orthopaedic Research Society, Feb. 2019, English, Orthopaedic Research Society, Austin, International conferenceInvolvement of autophagy in human intervertebral disc degeneration and herniationPoster presentation
- The 65th Annual Meeting of Orthopaedic Research Society, Feb. 2019, English, Orthopaedic Research Society, Austin, International conferenceA study of the fate of notochordal cell in the process of the intervertebral disc degeneration using a dynamic loading organ culture systemPoster presentation
- The 65th Annual Meeting of Orthopaedic Research Society, Feb. 2019, English, Orthopaedic Research Society, Austin, Domestic conferenceA Newly Developed Low Adhesive Scaffold Collagen (LASCol) Accelerates Bone Healing in a Rat Femur Osteotomy ModelPoster presentation
- 第3回日本抗加齢協会学術フォーラム, Dec. 2018, Japanese, 日本抗加齢協会, 大阪, Domestic conferenceロコモ体操による脊柱アライメント改善効果－手術によらない脊柱変形改善の試み－[Invited]Nominated symposium
- 第40回日本バイオマテリアル学会大会, Nov. 2018椎間板組織再生のための細胞低接着性コラーゲンゲルの開発Oral presentation
- 第2回日本リハビリテーション医学会秋季学術集会, Nov. 2018, Japanese, 日本リハビリテーション医学会, 仙台, Domestic conference脊椎転移の症候化リスク因子の前向き検討Oral presentation
- 第8回DDS再生医療研究会 / 第10回多血小板血漿(PRP)療法研究会, Nov. 2018, Japanese, 多血小板血漿(PRP)療法研究会, 大阪, Domestic conference細胞低接着性コラーゲン(LASCol)を用いた脊椎椎間板再生の可能性Oral presentation
- 第52回日本側彎症学会学術集会, Nov. 2018, Japanese, 日本側彎症学会, 東京, Domestic conference筋ジストロフィーに伴う側弯症の手術成功Oral presentation
- 第2回日本リハビリテーション医学会秋季学術集会, Nov. 2018, Japanese, 日本リハビリテーション医学会, 仙台, Domestic conferenceロコモ体操の脊椎・骨盤・下肢矢状面アライメント改善効果－有効性とその限界－Oral presentation
- 神戸脊椎を考える会, Nov. 2018, Japanese, Kobe Spine Conference for Young Clinicians, 神戸, Domestic conferenceロコモ体操による脊柱アライメントと体幹バランスの改善効果Keynote oral presentation
- 第46回日本関節病学会, Nov. 2018, Japanese, 日本関節病学会, 岡山, Domestic conferenceリウマチ性頸椎不安定性の進行と予後予測因子：10年以上の前向き追跡調査結果[Invited]Nominated symposium
- 第8回DDS再生医療研究会 / 第10回多血小板血漿(PRP)療法研究会, Nov. 2018, Japanese, 多血小板血漿(PRP)療法研究会, 大阪, Domestic conferenceゼラチンハイドロゲルを用いた徐放化抗がん剤局所投与による骨転移局所制御Oral presentation
- 第2回日本リハビリテーション医学会秋季学術集会, Nov. 2018, Japanese, 日本リハビリテーション医学会, 仙台, Domestic conference70歳以上の脊椎転移患者の手術成績 -PS、ADL、QOLの推移から-Oral presentation
- Depuy Synthes Combined Cadaveric Course in Bangkok, Oct. 2018, Japanese講師[Invited]Public discourse
- 第33回日本整形外科学会基礎学術集会, Oct. 2018, Japanese, 日本整形外科学会, 奈良, Domestic conference動的圧迫負荷が,integrina5B1を介して脊索由来細胞に与える影響Poster presentation
- 第131回中部日本整形外科災害外科学会学術集会, Oct. 2018, Japanese, 中部日本整形外科災害外科学会, 岡山, Domestic conference脊椎転移に対する手術は予後を延長させるOral presentation
- 第33回日本整形外科学会基礎学術集会, Oct. 2018, Japanese, 日本整形外科学会, 奈良, Domestic conference脊椎椎間板におけるオートファジー活性は疾患よりも年齢と変性度に依存するPoster presentation
- 2018 Kobe Rosai Almuni Club, Oct. 2018, Japanese, 神戸労災病院, 神戸, Domestic conference四肢のしびれ・運動麻痺[Invited]Invited oral presentation
- 第33回日本整形外科学会基礎学術集会, Oct. 2018, Japanese, 日本整形外科学会, 奈良, Domestic conference細胞低接着性コラーゲン（low adhesive scaffold collagen: LASCol）を用いた脊椎椎間板再生の試みOral presentation
- 第33回日本整形外科学会基礎学術集会, Oct. 2018, Japanese, 日本整形外科学会, 奈良, Domestic conferenceがん骨転移モデルに対するゼラチンハイドロゲルを用いた徐放化抗がん剤局所投与の有効性Poster presentation
- 第33回日本整形外科学会基礎学術集会, Oct. 2018, Japanese, 日本整形外科学会, 奈良, Domestic conferencemTOR阻害薬テムシロリムスがヒト椎間板髄核細胞に及ぼす保護作用はAktとオートファジーの誘導に由来するOral presentation
- 第73回日本体力医学会大会, Sep. 2018, Japanese, 日本体力医学会大会, 福井, Domestic conferenceロコモ度が脊椎アライメントに及ぼす影響Oral presentation
- 5th Tissue Engineering and Regenerative Medicine International Society World Congress, Sep. 2018, English, Tissue Engineering and Regenerative Medicine International Society, 京都, International conferenceA Novel Production Method of Gelatin Hydrogel Microsphere as a Sustained Release System of Cisplatin Aiming for Clinical ApplicationPoster presentation
- 第51回脊椎外科同好会, Aug. 2018, Japanese, 脊椎外科同好会, 神奈川, Domestic conference脳性麻痺性頸椎症性脊髄症、術後偽関節の1例Oral presentation
- 第3回神戸内科塾, Aug. 2018, Japanese, 第一三共株式会社, 神戸, Domestic conference四肢のしびれ：整形外科の立場から[Invited]Invited oral presentation
- The 7th Japan Association of Spine Surgeons with Ambition, Aug. 2018, Japanese, Japan Association of Spine Surgeons with Ambition, 広島, Domestic conferenceロコモ体操の脊椎・骨盤・下肢矢状面アライメント改善効果－有効性とその限界－Oral presentation
- 第51回脊椎外科同好会, Aug. 2018, Japanese, 脊椎外科同好会, 神奈川, Domestic conference80歳以上の脊椎術後深部感染に対する局所陰圧閉鎖療法の有用性と限界Oral presentation
- NPO法人兵庫脊椎脊髄病医療振興機構 第18回市民公開講座, Jul. 2018, Japanese「ロコトレ」を行って「ロコモ」を予防しよう！－いつまでも自分の足で歩き続けるために－[Invited]Invited oral presentation
- 第51回日本整形外科骨・軟部腫瘍学術集会, Jul. 2018, Japanese, 日本整形外科学会, 静岡, Domestic conference不安定性を有する転移性脊椎腫瘍に対する治療 脊椎転移に対する手術療法の効果Public symposium
- 第51回日本整形外科骨・軟部腫瘍学術集会, Jul. 2018, Japanese, 日本整形外科学会, 静岡, Domestic conference脊椎転移に対する手術療法の効果Oral presentation
- 第55回日本リハビリテーション医学会学術集会, Jun. 2018, Japanese, 日本リハビリテーション医学会, 福岡, Domestic conference新規低接着性コラーゲン(LASCol)はラット大腿骨骨欠損モデルにおいて骨癒合を促進するPoster presentation
- 第55回日本リハビリテーション医学会学術集会, Jun. 2018, Japanese, 日本リハビリテーション医学会, 福岡, Domestic conference細胞低接着性コラーゲン（Low Adhesive Scaffold Collagen: LASCol）による脊椎椎間板再生Poster presentation
- 第91回日本整形外科学会学術総会, May 2018, Japanese, 日本整形外科学会, 神戸, Domestic conference腰椎変性すべり症に対する前後方間接除圧固定術と後方直接除圧固定術の多施設前向き研究による比較検討－臨床成績の観点からーOral presentation
- 第91回日本整形外科学会学術総会, May 2018, Japanese, 日本整形外科学会, 神戸, Domestic conference腰椎変性すべり症に対する前後合併椎体間固定術と後方椎体間固定術の多施設比較検討ー固定椎間のＸ線学的評価ーOral presentation
- 第91回日本整形外科学会学術総会, May 2018, Japanese, 日本整形外科学会, 神戸, Domestic conferenceロコモティブシンドロームに対するロコモ体操の脊椎・骨盤・下肢矢状断アライメント改善効果Oral presentation
- The 45th International Society for the Study of the Lumbar Spine, May 2018, English, International Society for the Study of the Lumbar Spine, Banff, International conferenceThe prospective cohort study for the predicting factor of symptomatic spinal metastasisPoster presentation
- The 45th International Society for the Study of the Lumbar Spine, May 2018, English, International Society for the Study of the Lumbar Spine, Banff, International conferenceThe fate of notochordal cell in intervertebral disc degeneration induced by dynamic compressive load through integrin alpha5/beta1 mechanotransductionPoster presentation
- The 45th International Society for the Study of the Lumbar Spine, May 2018, English, International Society for the Study of the Lumbar Spine, Banff, International conferenceTemsirolimus is a candidate of the optimal mTOR inhibitor to protect human disc cells dependingon Akt and autophagy inductionPoster presentation
- The 45th International Society for the Study of the Lumbar Spine, May 2018, English, International Society for the Study of the Lumbar Spine, Banff, International conferenceRegenerative Potential of the Intervertebral Disc by Using the Low Adhesive Scaffold Collagen (LASCol)Oral presentation
- 45th International Society for the Study of the Lumbar Spine Annual Meeting, May 2018, English, International Society for the Study of the Lumbar Spine, Banff, International conferenceRegenerative potential of the intervertebral disc by using the Low Adhesive Scaffold Collagen (LASCol)Poster presentation
- The 45th International Society for the Study of the Lumbar Spine, May 2018, English, International Society for the Study of the Lumbar Spine, Banff, International conferenceProtective effects of “locomotion training” exercise against the sagittal malalignment of the spine-pelvis-lower extremity axis in patients with the locomotive syndromePoster presentation
- The 45th International Society for the Study of the Lumbar Spine, May 2018, English, International Society for the Study of the Lumbar Spine, Banff, International conferenceFeatures and problems of corrective long spinal fusion for adult spinal deformity with multiple vertebral fractures due to severe osteoporosisPoster presentation
- 34th Annual Meeting Cervical Spine Research Society - Europe, May 2018, English, Cervical Spine Research Society – European Section (CSRS-ES), Lisbon, International conferenceComplications of posterior fusion for atlantoaxial instability in children with Down syndromePoster presentation
- The 45th International Society for the Study of the Lumbar Spine, May 2018, English, International Society for the Study of the Lumbar Spine, Banff, International conferenceAutophagy plays protective roles against human disc cellular apoptosis,senescence, and extracellular matrix degradationOral presentation
- 第47回日本脊椎脊髄病学会学術集会, Apr. 2018, Japanese, 日本脊椎脊髄病学会, 神戸, Domestic conference椎間板動的圧迫負荷が脊索由来髄核細胞に及ぼした影響Oral presentation
- 第130回中部日本整形外科災害外科学会学術集会, Apr. 2018, Japanese, 中部日本整形外科災害外科学会, 松山, Domestic conference前向きコホート研究による症候性脊椎転移の発生リスクに関する検討Oral presentation
- 第47回日本脊椎脊髄病学会学術集会, Apr. 2018, Japanese, 日本脊椎脊髄病学会, 神戸, Domestic conference仙骨骨折を合併した骨盤輪骨折に対するSacral-Aal-lliac Screw を用いた腰仙椎後側法固定術の有用性Oral presentation
- 第47回日本脊椎脊髄病学会学術集会, Apr. 2018, Japanese, 日本脊椎脊髄病学会学術集会, 神戸, Domestic conference脊椎転移に対する集学的治療は予後を延長させるOral presentation
- 第47回日本脊椎脊髄病学会学術集会, Apr. 2018, Japanese, 日本脊椎脊髄病学会, 神戸, Domestic conference脊椎転移に対する手術加療の費用対効用Oral presentation
- 第47回日本脊椎脊髄病学会学術集会, Apr. 2018, Japanese, 日本脊椎脊髄病学会, 神戸, Domestic conference細胞低接着性コラーゲン（Low Adhesive Scaffold Collagen: LASCol）による脊椎椎間板再生の可能性Oral presentation
- 第47回日本脊椎脊髄病学会学術集会, Apr. 2018, Japanese, 日本脊椎脊髄病学会, 神戸, Domestic conference骨粗鬆に伴う多発椎体骨折を合併した成人脊柱変形手術の特徴と問題点Poster presentation
- 第47回日本脊椎脊髄病学会学術集会, Apr. 2018, Japanese, 日本脊椎脊髄病学会, 神戸, Domestic conference腰椎変性すべり症に対するOblique Lateral Inter-bodyFusion(OLIF)を用いた低侵襲前後合併椎体間固定術と後方椎体間固定術の多施設比較検討Oral presentation
- 第47回日本脊椎脊髄病学会学術集会, Apr. 2018, Japanese, 日本脊椎脊髄病学会, 神戸, Domestic conferenceロコモティブシンドロームに関連した脊椎・骨盤・下肢矢状面アライメント障害に対するロコモ体操の改善効果Poster presentation
- 第47回日本脊椎脊髄病学会学術集会, Apr. 2018, Japanese, 日本脊椎脊髄病学会, 神戸, Domestic conferenceリウマチ頚椎不安定性発生防止のための予測因子― 10年以上の前向き多施設共同研究からの検討 ―Oral presentation
- 第47回日本脊椎脊髄病学会学術集会, Apr. 2018, Japanese, 日本脊椎脊髄病学会, 神戸, Domestic conferenceオートファジーの抑制はヒト椎間板細胞においてアポトーシス・セネッセンスを誘導するが、細胞外基質代謝への影響は少ないOral presentation
- 第47回日本脊椎脊髄病学会学術集会, Apr. 2018, Japanese, 日本脊椎脊髄病学会, 神戸, Domestic conferencemTORC1阻害薬テムシロリムスのヒト椎間板髄核細胞保護効果はオートファジー及びAktの活性化に由来するOral presentation
- 第130回中部日本整形外科災害外科学会学術集会, Apr. 2018, Japanese, 中部日本整形外科災害外科学会, 松山, Domestic conferenceAugumented Realityと生体模型により摘出しえた腰部伏針の１例Oral presentation
- 第49回脊椎外科を学ぶ会, Feb. 2018, Japanese, 脊椎外科を学ぶ会, 大阪, Domestic conference巨大頚胸椎MFHに対してseparation surgeryとIMRTが奏功した1例Oral presentation
- The 32nd Annual Research Meeting of the Japanese Orthopaedic Association, Oct. 2017, Japanese, The Japanese Orthopaedic Association, 沖縄, Domestic conferenceｍTORC1阻害薬テムシロリスムはヒト椎間板髄核細胞において細胞死、細胞老化、細胞外基質分解を抑制するPublic symposium
- The 32nd Annual Research Meeting of the Japanese Orthopaedic Association, Oct. 2017, Japanese, The Japanese Orthopaedic Association, 沖縄, Domestic conference脊椎椎間板変性へのオートファジーの関与とその脊索由来細胞における恒常性維持機構の可能性Public symposium
- The 129ｔｈ Meeting of the Central Japan Association of Orthopaedic Surgery and Traumatology, Oct. 2017, Japanese, Meeting of The Central Japan Association of Orthopaedic Surgery, 富山, Domestic conferenceロコモティブシンドロームに対するロコモ体操の脊椎骨盤矢状面アライメントへの影響Oral presentation
- The 32nd Annual Research Meeting of the Japanese Orthopaedic Association, Oct. 2017, Japanese, The Japanese Orthopaedic Association, 沖縄, Domestic conferenceオートファジーの抑制はヒト椎間板細胞においてアポトーシス、セネッセンスを誘導し、細胞数を減少させるPublic symposium
- 第48回脊椎外科を学ぶ会, Sep. 2017, Japanese, 脊椎外科を学ぶ会, 大阪, Domestic conference後頭頚（胸）椎固定術後に隣接椎間障害を繰り返し、最終的に仙椎までの固定を要した1例Oral presentation
- 第36回運動器移植再生医学研究会, Sep. 2017, Japanese, 運動器移植再生医学研究会, 京都, Domestic conferencemTORC1阻害薬テムシロリムスはヒト椎間板髄核細胞において細胞死、細胞老化、細胞外基質分解を抑制するOral presentation
- 第50回脊椎外科同好会, Aug. 2017, Japanese, 脊椎外科同好会, 岡山, Domestic conference隣接椎間障害を繰り返し最終的に後頭・全脊椎固定術を要した症例Oral presentation
- The 6th Japan Association of Spine Surgeons with Ambition, Aug. 2017, Japanese, CHIBA University, 東京, Domestic conference症候性脊椎転移の発生リスクに関する前向き研究Oral presentation
- The 50th Annual Musculoskeletal Tumor Meeting of the Japanese Orthopaedic Association, Jul. 2017, Japanese, The Japanese Orthopaedic Association, 東京, Domestic conference症候性脊椎転移の発生リスクに関する前向き研究Oral presentation
- 第1回これからの関節リウマチ治療を考える会, Jul. 2017, Japanese, これからの関節リウマチ治療を考える会, 神戸, Domestic conferenceリウマチ性頚椎不安定性の進行とその予後予測因子[Invited]Invited oral presentation
- The 90th Annual Meeting of the Japanese Orthopaedic Association, May 2017, Japanese, The Japanese Orthopaedic Association, 仙台, Domestic conference有症状脊椎転移の発生リスクに関する前向き研究Poster presentation
- The 90th Annual Meeting of the Japanese Orthopaedic Association, May 2017, Japanese, The Japanese Orthopaedic Association, 仙台, Domestic conference最重症型骨粗鬆症性多発脊椎椎体骨折に対する後方矯正固定術の臨床成績-2年以上経過症例を対象として-Poster presentation
- The 90th Annual Meeting of the Japanese Orthopaedic Association, May 2017, Japanese, The Japanese Orthopaedic Association, 仙台, Domestic conference腰椎変性すべり症に対する前後方間接除圧固定術と後方直接除圧固定術の多施設前向き研究による比較検討Poster presentation
- The 90th Annual Meeting of the Japanese Orthopaedic Association, May 2017, Japanese, The Japanese Orthopaedic Association, 仙台, Domestic conferenceがん患者の脊椎転移に対する直視下手術と経皮的後方固定術が及ぼす全身状態、ADL、QOL改善効果の比較Poster presentation
- エーザイ社内講演会, Apr. 2017, Japanese腰痛への薬物療法[Invited]Invited oral presentation
- The 46th Annual Meeting of the Japanese Society for Spine Surgery and Related Research, Apr. 2017, Japanese, The Japanese Society for Spine Surgery and Related Research, 札幌, Domestic conference椎間板髄核におけるオートファジーの重要性とその脊索表現型保持への関与の可能性Oral presentation
- The 46th Annual Meeting of the Japanese Society for Spine Surgery and Related Research, Apr. 2017, Japanese, The Japanese Society for Spine Surgery and Related Research, 札幌, Domestic conference神経筋原性側弯症に対する脊椎矯正固定術の治療成績と合併症Poster presentation
- The 46th Annual Meeting of the Japanese Society for Spine Surgery and Related Research, Apr. 2017, Japanese, The Japanese Society for Spine Surgery and Related Research, 札幌, Domestic conference症候性脊椎転移の発生リスクに関する前向き研究Oral presentation
- The 128th Meeting of the Central Japan Association of Orthopaedic Surgery and Traumatology, Apr. 2017, Japanese, The Central Japan Association of Orthopaedic Surgery and Traumatology, 神戸, Domestic conference症候性脊椎転移の発生リスクに関する前向き研究Oral presentation
- The 46th Annual Meeting of the Japanese Society for Spine Surgery and Related Research, Apr. 2017, Japanese, The Japanese Society for Spine Surgery and Related Research, 札幌, Domestic conference腰椎すべり症に対するOLIFを用いた前後方間接除圧固定術の手術成績―多施設前向き研究による後方直接除圧固定術との比較検討Oral presentation
- The 46th Annual Meeting of the Japanese Society for Spine Surgery and Related Research, Apr. 2017, Japanese, The Japanese Society for Spine Surgery and Related Research, 札幌, Domestic conference近位端の2椎弓ポリエチレンテープ固定の追加はlong fusionにおけるPJKを予防できるか?Poster presentation
- 第3回志国脊椎医龍会, Apr. 2017, Japanese, 志国脊椎医龍会, 札幌, Domestic conferenceリウマチ性頚椎不安定性の進行と予後予測因子[Invited]Invited oral presentation
- The 46th Annual Meeting of the Japanese Society for Spine Surgery and Related Research, Apr. 2017, Japanese, The Japanese Society for Spine Surgery and Related Research, 札幌, Domestic conferenceヒト椎間板髄核臍傍におけるmTOR阻害薬の細胞死、細胞老化、細胞外基質分解抑止効果の比較Poster presentation
- The 46th Annual Meeting of the Japanese Society for Spine Surgery and Related Research, Apr. 2017, Japanese, The Japanese Society for Spine Surgery and Related Research, 札幌, Domestic conferenceハイリスク側弯症症例に対する後方側弯症手術の治療成績と周術期合併症Oral presentation
- The 128th Meeting of the Central Japan Association of Orthopaedic Surgery and Traumatology, Apr. 2017, Japanese, The Central Japan Association of Orthopaedic Surgery and Traumatology, 神戸, Domestic conferenceがん患者の脊椎転移に対する直視下手術と経皮的後方固定術の全身状態、ADL、QOL改善効果Oral presentation
- The 46th Annual Meeting of the Japanese Society for Spine Surgery and Related Research, Apr. 2017, Japanese, The Japanese Society for Spine Surgery and Related Research, 札幌, Domestic conferenceがん患者の脊椎転移に対して直視下手術と経皮的後方固定術が全身状態，ADL，QOLに及ぼす影響の比較Poster presentation
- The 128th Meeting of the Central Japan Association of Orthopaedic Surgery and Traumatology, Apr. 2017, Japanese, The Central Japan Association of Orthopaedic Surgery and Traumatology, 神戸, Domestic conferenceSeparation surgery後にIMRTを施行した脊椎腫瘍の2例Oral presentation
- The 46th Annual Meeting of the Japanese Society for Spine Surgery and Related Research, Apr. 2017, Japanese, The Japanese Society for Spine Surgery and Related Research, 札幌, Domestic conferenceATG5のノックダウンによるオートファジーの抑制はヒト椎間板細胞のアポトーシスとセネッセンスを誘導し、細胞数を減少させるPoster presentation
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Kobe University, 01 Apr. 2025 - 31 Mar. 2029Research on a treatment system for degenerative intervertebral discs using silk elastin - Attempts to create artificial intervertebral discs -
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Kobe University, 01 Apr. 2024 - 31 Mar. 2028Development of gene therapy for intervertebral disc degeneration by using cationized gelatin nanospheres
- 日本学術振興会, 科学研究費助成事業, 基盤研究(C), 神戸大学, 01 Apr. 2023 - 31 Mar. 2026アディポネクチンによる椎間板変性・炎症に対する治療法の開発椎間板変性は腰痛の主な原因の一つである。アディポネクチンは脂肪細胞から分泌されるアディポサイトカインの一つであり、抗炎症作用を有すると報告されている。また、アディポネクチンはAdipoR1やAdipoR2といった受容体に結合してその作用を発揮し、それら受容体の発現量が増強するとアディポネクチンの作用も増強することが報告されている。我々は過去にアディポネクチン受容体アゴニストであるアディポロンを用いてアディポネクチンが椎間板の炎症や変性へ及ぼす影響を調査し、アディポロンは細胞外基質異化因子や炎症性サイトカインの発現低下を通して椎間板変性進行の防止や予防に有用な可能性を報告した。アディポネクチンの臨床応用を目指し、今回はまず始めにアディポネクチン受容体アゴニストであるアディポロンの作用機序を明らかにするための実験を行うこととした。脊椎手術を施行された20～70歳代14例のヒト椎間板細胞を培養して6グループ(Control群: C群、アディポロン投与群: A群、IL-1β投与群: I群、アディポロン+IL-1β投与群: A+I群、アディポロン＋IL-1β+AdipoR1 SiRNA投与群: A+I+R1 Si群、アディポロン＋IL-1β+AdipoR2 SiRNA投与群: A+I+R2 Si群)に分け、細胞外基質代謝や炎症性サイトカインへの影響や炎症経路のタンパク発現をRT-PCR,蛍光免疫染色、Western Blotting法を用いて調査することを計画した。RT-PCR法でTNF-α、IL-6、MMP-13、ADAMTS-4についてI群とA+I群間では有意に発現低下を認めたが、A+I群とA+I+R1 Si群やA+I+R2 Si群の間には有意差は認めていない。蛍光免疫染色とWestern Blotting法でも同様の結果となっている。
- 神戸大学, 神戸大学GAPファンドプログラム（うりぼーファンド）, 神戸大学医学部附属病院整形外科, Apr. 2025 - Mar. 2026, Principal investigatorカチオン化ゼラチンナノ粒子を用いた脊椎椎間板遺伝子治療法の開発―空間的遺伝子発現解析を用いた有効性と安全性の検討―
- ひょうご科学技術協会, 学術研究助成, 学術研究助成, 神戸大学医学部附属病院整形外科, Apr. 2024 - Mar. 2025, Principal investigator化膿性脊椎炎の早期制御を目指したゼラチンハイドロゲル徐放化抗菌薬局所治療
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Kobe University, 01 Apr. 2021 - 31 Mar. 2024Development of gene and pharmacological therapies for intervertebral disc degeneration by modulating mTORC1We hypothesized that mTOR signaling would be influential in the intervertebral disc, which is the largest avascular, low-nutrient organ in the body. In-vitro RNA interference (RNAi) targeting RAPTOR, a component of mTOR complex 1 (mTORC1), successfully enhanced autophagy as well as suppressed apoptosis, senescence, and matrix catabolism in rat disc cells. In-vivo intradiscal knockdown of RAPTOR by RNAi further mitigated radiological and histological disc degeneration in rats through the induction of autophagy and inhibition of apoptosis, senescence, and matrix degradation. In addition, in-vitro CRISPR-Cas9 against RAPTOR presented consistent findings with RNAi, which are more robust and sustained. Thus, RNAi-mediated and CRISPR-Cas9-mediated suppression of RAPTOR/mTORC1 could be a new gene therapeutic approach to intervertebral disc degeneration.
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Kobe University, 01 Apr. 2020 - 31 Mar. 2023Development of a new treatment against intervertebral disc degeneration and inflammation using adiponectinAdiponectin, a hormone secreted by adipocytes, has anti-inflammatory effects and is involved in various physiological and pathological processes such as obesity, inflammatory diseases, and cartilage diseases. However, the function of adiponectin in intervertebral disc (IVD) degeneration is not well understood. This study aimed to elucidate the effects of AdipoRon, an agonist of adiponectin receptor, on human IVD cells, and on rat tail IVD degeneration model. AdipoRon treatment downregulated gene expression of proinflammatory and catabolic factors. Furthermore, AdipoRon suppressed p65 phosphorylation in the adenosine monophosphate-activated protein kinase (AMPK) pathway. Intradiscal administration of AdipoRon alleviated the radiologic IVD height loss, histomorphological degeneration, production of extracellular matrix catabolic factors and proinflammatory cytokines. Therefore, AdipoRon could be a new therapeutic candidate for alleviating the early stage of IVD degeneration.
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Kobe University, 01 Apr. 2020 - 31 Mar. 2023the study of new treatment for spinal metastasis with the combination of sustained release anti-cancer drug and non-metal spinal instrumentationExperiments were conducted to prepare sustained-release anticancer drugs and to confirm the effects of sustained-release anticancer drugs using rat bone metastasis models. A sustained-release anticancer drug was locally administered to bone metastasis model rats and evaluated over time. The sustained-release anticancer drug showed a higher antitumor effect than the systemic administration group, while reducing side effects such as weight loss and renal dysfunction. In addition, in research and development of non-metallic spinal implants, strength tests of implants were conducted using the finite element method. Experiments on the radiation artifact of the PEEK screw are in the preliminary stage.
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Kobe University, 01 Apr. 2019 - 31 Mar. 2022Development of new therapeutic drugs for osteoarthritis targeting mTORC1Temsirolimus is a water-soluble form of mechanistic target of rapamycin complex (mTORC) 1 inhibitor. In human chondrocytes, the treatment with temsirolimus inhibited IL1-β-induced reduction in extracellular matrix gene expressions, upregulation in cartilage degrading enzyme expressions, reduced autophagy and increased apoptosis.The intra-articular administration of temsirolimus attenuated trauma-induced progression of knee osteoarthritic (OA) in young and aged mice, and the spontaneous accelerated knee OA progression in Senescence Accelerated Mice Prone 8 mice. The results of this study suggested that temsirolimus may have a protective effect on cartilage and attenuate OA progression.
- 国立研究開発法人日本医療研究開発機構（AMED）, 産学連携医療イノベーション創出プログラム セットアップスキーム（ACT-MS）, 近畿大学・神戸大学・大阪府立大学・神戸医療産業都市推進機構, Aug. 2020 - Mar. 2022, Coinvestigatorヘルニア・変性椎間板組織再生を促す新規コラーゲンゲル充填剤
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Early-Career Scientists, Grant-in-Aid for Early-Career Scientists, Kobe University, 01 Apr. 2018 - 31 Mar. 2020, Principal investigatorThis study aimed to clarify effectiveness of the Low Adhesive Scaffold Collagen (LASCol) for intervertebral disc regeneration. The LASCol is a new collagen type I-based scaffold through actinidain hydrolysis with a high 3D spheroid-forming capability, water-solubility, and biodegradability and low antigenicity. In human disc cells surgically obtained, time-dependent spheroid formation with increased phenotypic markers and matrix components was observed on LASCol. In a rat tail nucleotomy model, LASCol-injected discs presented radiographic and MRI damage control. Then, LASCol decelerated histological disc disruption, showing aggrecan-positive and collagen type II-positive endogenous cell migration and macrophage infiltration. Reduced nucleotomy-induced disc disruption through spontaneous spheroid formation by LASCol warrants further investigations of whether it may be an effective treatment without stem cells and/or growth factors for intervertebral disc disease.Competitive research funding
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Kobe University, 01 Apr. 2015 - 31 Mar. 2019Three types of disc degeneration models, which are indispensable for intervertebral disc research, have been established. Using the model that causes gradual degeneration, especially during the compression period, the notochord-derived cells disappeared early and the non-notochord-derived cells (recommending chondroid cells) relatively increased. In experiments using a dynamic loading culture device, pressure loading revealed that the involvement of a typical mechanoreceptor, integrin, is involved in disc degeneration. We made a spacer that can be inserted from the small skin in the posterior of the spine, made improvements including peripheral equipment, and confirmed by conducting large animal experiments for efficacy.Competitive research funding
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), Grant-in-Aid for Young Scientists (B), Kobe University, 01 Apr. 2016 - 31 Mar. 2018, Principal investigatorThis study aimed to clarify effectiveness of biological therapies for intervertebral disc degeneration by modulating mTOR signaling. In our study, RNA interference technique revealed that suppression of the mTOR complex 1 (mTORC1) had protective effects against disc cellular apoptosis, senescence, and extracellular matrix degradation. Furthermore, administration of mTORC1 inhibitors to find potential clinical applications showed similar beneficial effects on disc cells through Akt induction. Then, specific autophagy inhibition by RNA interference clearly presented anti-apoptotic and anti-senescent effects of autophagy. Based on these findings, biological modulation of mTOR signaling and autophagy is a potential therapeutic strategy for degenerative disc disease.Competitive research funding
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Kobe University, 01 Apr. 2015 - 31 Mar. 2018mTORC1 suppression through RNAi for Raptor showed protective effects against human NP cell apoptosis, senescence, and matrix degradation. This study suggests that selective inhibition for mTORC1 but not mTORC2 is beneficial to human NP cells, which depends on Akt as well as autophagy induction. Thus, Raptor is a potent target for new molecular treatments for human degenerative disc disease. And also, in our results, the first generation mTOR inhibitors suppressed mTOR signaling, induced autophagy and Akt, and showed protective effects against human disc NP cell apoptosis and senescence. In clinical use, adverse immunosuppression of mTOR inhibitors would recommend its local intra-discal injection rather than its systemic administration. To accomplish successful local delivery of agents, water solubility is a key factor. Therefore, intra-discal injection of temsirolimus that has improved water solubility is a potential therapeutic application to human degenerative disc disease.Competitive research funding
- 一般社団法人 神緑会, 研究助成, 研究助成, 神戸大学, Apr. 2017 - Mar. 2018Involvement and roles of autophagy in intervertebral disc homeostasis
- 公益財団法人 整形災害外科学研究助成財団, 研究助成, 大日本住友製薬奨励賞, 神戸大学, Apr. 2015 - Mar. 2018Gene therapy of intervertebral disc degeneration by modulating mTOR signaling
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), Grant-in-Aid for Young Scientists (B), Kobe University, 01 Apr. 2014 - 31 Mar. 2017The aim of this research was to reveal the pathomechanism of intervertebral disc (IVD) degeneration. The effect of mechano-stress on homeostasis of IVD tissue and the involvement of adiponectin with IVD degeneration was investigated. The results of this study was revealed Mechano-stress induced the IVD degeneration via Integrin α5β1, mechanoreceptor. In addition, the expression of adiponectin receptor in the IVD tissues was firstly investigated. The alteration of adiponectin receptor according to the severity of IVD degeneration was also revealed using rat IVD degeneration model. This adiponectin has the potential to inhibit the expression of TNF-α after IL-1β stimulation.
- Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Research Activity Start-up, Grant-in-Aid for Research Activity Start-up, Kobe University, 29 Aug. 2014 - 31 Mar. 2016This study aimed the elucidation of roles of autophagy in intervertebral disc degeneration, providing insight into potential therapeutic targets. In our study, pharmacological induction of autophagy using rapamycin, an mTORC1 inhibitor, had protective effects against disc cellular apoptosis, senescence, and extracellular matrix degradation. In addition, we found that partial inhibition of mTORC1 only, but not of Akt and mTORC2 which exist in the upstream of mTORC1, provides these beneficial effects on disc cells. Furthermore, discs of rapamycin-fed mice demonstrated decreased degradation of aggrecan, a major matrix molecules, by both of MMPs and ADAMTSs. These findings suggest modulation of autophagy and related mTOR signaling as a possible treatment strategy for degenerative disc disease.
- Uehara Memorial Foundation, Overseas Research Fellowship, Overseas Research Fellowship, University of Pittsburgh, Apr. 2013 - Mar. 2014Delayed intervertebral disc degeneration by autophagy regulation
- 一般社団法人 神緑会, 研究助成, 研究助成, 神戸大学, Apr. 2009 - Mar. 2010Pathomechanism of disc degeneration and related new therapeutic strategy