SEARCH
検索詳細
坂東 弘教大学院医学研究科 医科学専攻准教授
研究活動情報
■ 受賞- 2024年06月 日本内分泌学会, 研究奨励賞
- 2023年05月 United Japanese researchers Around the world (UJA)論文賞 特別賞
- 2021年03月 The Endocrine Society’s 101st Annual Meeting and Expo (ENDO2021), Outstanding Abstract Award
- 2020年11月 The University of Michigan Postdoctoral Association, Conference Award
- 2020年03月 The Office of Graduate & Postdoctoral Studies, University of Michigan Medical School, Travel Award
- 2019年03月 The Endocrine Society, Early Career Forum Travel Award
- 2019年03月 The Endocrine Society’s 101st Annual Meeting and Expo (ENDO2019), Outstanding Abstract Award
- 2018年01月 神戸大学 糖尿病内分泌内科, Jump-up Award
- 2017年04月 日本内分泌学会, 若手研究奨励賞 (YIA)
- 2015年03月 14th International Pituitary Congress, Travel grant
- 2014年10月 7th International Congress of the GRS and IGF Society, Travel grant
- 2013年01月 日本内分泌学会, 第22回臨床内分泌代謝Update, トラベルグラント
- 2013年01月 日本内分泌学会, 第22回臨床内分泌代謝Update, 優秀ポスター賞
- 2025年05月, Journal of the Endocrine Society研究論文(学術雑誌)
- 2025年04月, Journal of Endocrinological Investigation研究論文(学術雑誌)
- 2025年, Endocrine Journal研究論文(学術雑誌)
- 2025年, Endocrine Journal研究論文(学術雑誌)
- 2024年11月, Hormones研究論文(学術雑誌)
- (一社)日本内分泌学会, 2024年10月, 日本内分泌学会雑誌, 100(2) (2), 590 - 590, 日本語急激な症状の顕在化と共に下垂体卒中を来したCushing病の一例
- (一社)日本内分泌学会, 2024年10月, 日本内分泌学会雑誌, 100(2) (2), 623 - 623, 日本語腫瘍別にMIBG集積性が異なった両側褐色細胞腫の1例
- (一社)日本内分泌学会, 2024年10月, 日本内分泌学会雑誌, 100(2) (2), 623 - 623, 日本語腫瘍別にMIBG集積性が異なった両側褐色細胞腫の1例
- (一社)日本内分泌学会, 2024年10月, 日本内分泌学会雑誌, 100(2) (2), 590 - 590, 日本語急激な症状の顕在化と共に下垂体卒中を来したCushing病の一例
- PURPOSE: To elucidate the long-term efficacy and safety of growth hormone replacement therapy (GHRT) in Japanese patients with adult growth hormone deficiency (AGHD). METHODS: We conducted a retrospective study. A total of 110 patients with AGHD receiving GHRT were enrolled. Clinical and laboratory data were collected annually from the beginning of the study. Statistical analysis was performed using a linear mixed-effects model. RESULTS: Of all patients, 46.4% were males, 70.9% had adult-onset GHD, and follow-up was up to 196 months, with a median of 68 months. The insulin-like growth factor-1 standard deviation score increased after the start of GHRT and remained constant for more than 11 years. Seventeen patients were followed up for more than 11 years. The body mass index increased. Waist circumference decreased in the short term but increased in the long term. The diastolic blood pressure decreased 1-5 years after the start of GHRT, and the systolic blood pressure increased 11 years after GHRT. Moreover, a long-term decrease in low-density lipoprotein cholesterol, an increase in high-density lipoprotein cholesterol, and a decrease in aspartate aminotransferase and alanine aminotransferase levels were observed. The glycosylated hemoglobin level increased after 3 years. The bone mineral density in the lumbar spine and total hip increased significantly 3 years after the start of GHRT. Finally, the number of adverse events was eight. CONCLUSION: We demonstrated the metabolic effectiveness and safety of GHRT in Japanese patients with AGHD over a long follow-up period of 16 years.2024年09月, Pituitary, 英語, 国際誌研究論文(学術雑誌)
- Cushing's syndrome is characterized by chronic glucocorticoid oversecretion and diverse clinical manifestations. Distinguishing between adrenocorticotropic hormone (ACTH)-independent and ACTH-dependent forms is crucial for determining treatment options. Plasma ACTH levels aid in the differential diagnosis, with undetectable or low levels suggesting ACTH-independent hypercortisolemia. ACTH is derived from pro-opiomelanocortin, and its processing involves prohormone convertase 1/3. High-molecular-weight ACTH is generally found in ACTH-producing pituitary tumors and ectopic ACTH syndrome. The mechanism of negative feedback and the process of high-molecular-weight ACTH alternation during ACTH-independent Cushing's syndrome remain unclear. A 40-year-old woman with hypertension and multiple fractures developed symptoms suggestive of Cushing's syndrome. Computed tomography revealed a left adrenocortical tumor along with atrophy of the right adrenal gland. ACTH levels were undetectable at the previous clinic, indicating ACTH-independent Cushing's syndrome. However, subsequent measurements at our hospital revealed non-suppressed ACTH (18.1 pg/mL), prompting further investigation. Gel exclusion chromatography confirmed the presence of high-molecular-weight ACTH. Metyrapone treatment decreased the cortisol levels. In this situation, in which ACTH levels should be elevated, a decrease in high-molecular-weight ACTH levels was observed. Histological findings revealed cortisol-producing adenoma without ACTH expression. This case highlights the importance of assay differences in evaluating ACTH concentrations and introduces a novel finding of circulating high-molecular-weight ACTH. The observed decline in high-molecular-weight ACTH levels suggests a potential time lag in the negative feedback within the hypothalamic-pituitary-adrenal axis exhibited by glucocorticoids. This temporal aspect of the regulation of ACTH-related molecules warrants further exploration to enhance our understanding of the hypothalamic-pituitary-adrenal axis feedback mechanism.2024年08月, Journal of neuroendocrinology, e13438, 英語, 国際誌研究論文(学術雑誌)
- SUMMARY: A 52-year-old female patient with breast cancer presented with a history of fatigue and malaise 1 year prior. She was diagnosed with isolated adrenocorticotropic hormone (ACTH) deficiency (IAD) on endocrinological examination. Her pituitary gland showed normal morphology. Paraneoplastic IAD associated with breast cancer was suspected; however, immunofluorescence staining revealed no ectopic ACTH or proopiomelanocortin expression in the tumor tissue. Subsequently, the patient was diagnosed with idiopathic acquired IAD concurrent with breast cancer, ruling out paraneoplastic syndrome. Although malignancy should be considered a potential cause of IAD, not all patients with concurrent IAD and malignancy necessarily develop paraneoplastic syndrome. LEARNING POINTS: Several adrenal insufficiency symptoms are similar to the nonspecific symptoms associated with malignancies, and therefore, the diagnosis of IAD remains challenging, especially in patients with cancer. When we encounter a case of IAD accompanied by a malignant tumor, it is important to suspect that paraneoplastic IAD, a novel clinical condition as secondary hypophysitis, may be the etiologic agent. Although malignant tumours should be considered a potential cause of IAD, not all patients with concurrent IAD and malignancy necessarily develop paraneoplastic autoimmune hypophysitis.2024年07月, Endocrinology, diabetes & metabolism case reports, 2024(3) (3), 英語, 国際誌研究論文(学術雑誌)
- PURPOSE: Early diagnosis and immediate treatment of Cushing's syndrome (CS) are critical for a better prognosis but remain a challenge. However, few comprehensive reports have focused on this issue or investigated whether patient-reported manifestations are consistent with physician-assessed symptoms of CS. This study aimed to clarify the differences in patient-reported and physician-assessed manifestations of signs and symptoms of CS that prevent early diagnosis. METHODS: This single-center retrospective study included 52 patients with CS (16 with Cushing's disease and 36 with adrenal CS). Upon clinical diagnosis, medical records were used to independently review the patient-reported and physician-assessed manifestations of typical (such as purple striae and proximal myopathy) and nonspecific features (such as hirsutism and hypertension). The correlations and differences between the patient-reported and physician-assessed manifestations were then analyzed. RESULTS: We observed a positive correlation between the total number of manifestations of nonspecific features reported by patients and those assessed by physicians, but not for typical features. Moreover, manifestations reported by the patients were less frequent than those assessed by physicians for typical features, leading to discrepancies between the two groups. In contrast, there were no differences in most nonspecific features between the patient-reported and physician-assessed manifestations. Notably, the concordance between patient-reported and physician-assessed manifestations of typical features was not associated with urinary free cortisol levels. CONCLUSION: Regardless of disease severity, patients often do not complain of the typical features of CS that are crucial for formulating a diagnosis.2024年06月, Endocrine, 英語, 国際誌研究論文(学術雑誌)
- BACKGROUND: A patient with systemic lupus erythematosus (SLE) suffered from acquired thyroid-stimulating hormone (TSH), luteinizing hormone (LH), and follicle-stimulating hormone (FSH) deficiencies. MRI findings revealed a slight atrophy of the pituitary gland. Further, the serum concentration of the covalent alpha subunit (glycoprotein hormones alpha chain [CGA]) in TSH-, LH-, and FSH-positive cells was below the detectable range. Because SLE is an autoimmune disorder, autoimmunity against the pituitary gland was suspected as the cause of pituitary deficiency. METHODS AND RESULTS: Immunofluorescence analysis showed that the patient's immunoglobulin G recognized CGA-positive cells in the pituitary gland; therefore, autoimmunity against CGA-positive cells may have caused TSH, LH, and FSH deficiencies in this patient. Moreover, cell-specific autoimmunity impairs pituitary hormone levels. Further research is required to clarify whether acquired TSH, LH, and FSH deficiencies are common in patients with SLE or other autoimmune diseases. CONCLUSION: Our findings highlight a unique case of acquired TSH, LH, and FSH deficiencies caused by circulating anti-CGA-positive cell antibodies, introducing a novel clinical concept of acquired hypopituitarism.2024年06月, Endocrine, 英語, 国際誌研究論文(学術雑誌)
- Elsevier BV, 2024年06月, Clinical Nutrition Open Science, 55, 223 - 233研究論文(学術雑誌)
- (一社)日本内分泌学会, 2024年05月, 日本内分泌学会雑誌, 100(1) (1), 332 - 332, 日本語Dailyからweekly GH製剤への切り替え後よりインスリン量の週内調節が必要となった1型糖尿病合併汎下垂体機能低下症の1例
- (一社)日本内分泌学会, 2024年05月, 日本内分泌学会雑誌, 100(1) (1), 370 - 370, 日本語メチラポン,カベルゴリン併用からオシロドロスタットへの切り替えを行った94歳Cushing病の一例
- 2024年04月, Journal of Neuroendocrinology, 36(6) (6)研究論文(学術雑誌)
- 2024年04月, Hormones研究論文(学術雑誌)
- (一社)日本糖尿病学会, 2024年04月, 糖尿病, 67(Suppl.1) (Suppl.1), S - 176, 日本語抗PD-1抗体阻害薬投与後に発症した膵臓MRI所見と血清CPRの経時的な変化を発症早期より確認し得た劇症1型様の糖尿病の一例
- (一社)日本糖尿病学会, 2024年04月, 糖尿病, 67(Suppl.1) (Suppl.1), S - 190, 日本語他科入院中患者に対する糖尿病内科医の併診業務の診療実態とその経時的推移
- (一社)日本内分泌学会, 2024年04月, 日本内分泌学会雑誌, 99(5) (5), 1430 - 1430, 日本語
- (一社)日本内分泌学会, 2024年04月, 日本内分泌学会雑誌, 99(5) (5), 1393 - 1393, 日本語COVID-19関連の神経内分泌病態 COVID-19ワクチン接種後に著明な低Na血症と意識障害を呈した一例
- (一社)日本内分泌学会, 2024年04月, 日本内分泌学会雑誌, 99(5) (5), 1423 - 1423, 日本語偽性Cushing症候群を契機に同定に至ったNR3C1新規変異の一例
- (一社)日本内分泌学会, 2024年04月, 日本内分泌学会雑誌, 99(5) (5), 1430 - 1430, 日本語当院におけるAGHDに対するGHRTの長期効果および安全性の検討
- 2024年02月, Endocrinology (United States), 165(4) (4)研究論文(学術雑誌)
- (一社)日本糖尿病学会, 2024年02月, 糖尿病, 67(2) (2), 84 - 84, 日本語ハイブリッドクローズドループ(HCL)療法下でフルマラソンを完走した1型糖尿病の2例
- (一社)日本糖尿病学会, 2024年02月, 糖尿病, 67(2) (2), 85 - 85, 日本語多職種連携のもとで実施した減量・代謝改善手術4例の経験
- (一社)日本糖尿病学会, 2024年02月, 糖尿病, 67(2) (2), 89 - 89, 日本語緩徐な経過を辿った免疫関連副作用(irAE)による1型様の糖尿病の1例
- (一社)日本糖尿病学会, 2024年02月, 糖尿病, 67(2) (2), 102 - 102, 日本語複数の膵島関連自己抗体が陽性だがprobable判定であった緩徐進行1型糖尿病の1例
- 2024年02月, Journal for ImmunoTherapy of Cancer, 12(2) (2)研究論文(学術雑誌)
- PURPOSE: Preoperative medical management is critical to prevent intraoperative cardiovascular complications in patients with pheochromocytomas and paragangliomas (PPGLs). Initial treatment involves α-adrenergic receptor blockers. However, while the routine use of metyrosine alongside these blockers is not strongly recommended due to a lack of evidence supporting its efficacy and associated safety concerns, there are previous studies on combination therapy with phenoxybenzamine and metyrosine. There are few reports on combination therapy with the selective α1-adrenergic receptor blocker doxazosin. Therefore, we investigated this combination treatment, which theoretically can affect perioperative outcomes in patients with PPGLs. To our knowledge, this is the first such study. METHODS: This retrospective single-center observational study involved 51 patients who underwent surgical resection of PPGLs at Kobe University Hospital between 2014 and 2022. All patients received doxazosin at maximum doses. Fourteen patients received concomitant metyrosine, while 37 received doxazosin alone. Their perioperative outcomes were compared. RESULTS: No severe event, such as acute coronary syndrome, was observed in either group. Intraoperatively, the doxazosin + metyrosine group exhibited a lower median minimum systolic blood pressure (56 [54-60] vs. 68 [59-74] mmHg, P = 0.03) and required lower median remifentanil (P = 0.04) and diltiazem (P = 0.02) doses than the doxazosin-alone group. CONCLUSION: The combination of metyrosine and doxazosin as a preoperative treatment for PPGLs affects intraoperative circulatory hemodynamics, such as a reduced occurrence of blood pressure elevation during surgery. Further research is necessary to identify patients who will benefit most from this combination treatment.2024年01月, Endocrine, 英語, 国際誌研究論文(学術雑誌)
- 2024年01月, European Journal of Endocrinology, 190(1) (1)研究論文(学術雑誌)
- Metyrapone is commonly used in the initial management of Cushing's syndrome to reduce hypercortisolemia, but its optimal dosage and timing can vary significantly between patients. Currently, there are limited guidelines on adjustment methods for its administration to individual needs. This study aimed to evaluate responsiveness of each patient to metyrapone and identify the patient characteristics associated with the indices of cortisol responsiveness following a low-dose metyrapone. This single-center retrospective observational study included 15 treatment-naïve patients, 7 of whom had Cushing's disease and 8 had adrenal Cushing's syndrome. Serum cortisol levels were measured hourly from the time of administration of 250 mg of metyrapone up to four hours afterward. Parameters analyzed included the nadir of serum cortisol levels (Fnadir), the difference between basal and nadir serum cortisol levels (ΔF), the time to nadir, and the characteristics of the patients. As a result, cortisol suppression curves showed significant variability among patients, particularly in the time to nadir. While the median time to nadir was 2 hours, 20% of patients required 4 hours or more, and these responses were not associated with patient characteristics. Fnadir was positively correlated with early-morning serum cortisol levels, serum cortisol levels after low-dose dexamethasone suppression test (LDDST), and urinary free cortisol (UFC) levels, whereas ΔF was positively correlated with late-night serum cortisol levels, serum cortisol levels after LDDST, and UFC levels. In conclusion, the duration of response to metyrapone appeared unpredictable in patients with Cushing's syndrome and did not correlate with patient characteristics at baseline. Tracking the effect of metyrapone following a single low-dose administration may explain this variability and provide insights for optimizing individual dosing regimens. Further studies are required to validate these findings and guide more personalized treatment adjustments.2024年, Frontiers in endocrinology, 15, 1511155 - 1511155, 英語, 国際誌研究論文(学術雑誌)
- We present a case of type 1 diabetes mellitus (T1DM) that developed in a 53-year-old man after long-term treatment with nivolumab. The patient underwent total gastrectomy for gastric cancer at 40 years of age, and he was started on nivolumab at age 48 years for treatment of a recurrent lesion that proved resistant to standard chemotherapy. Nivolumab treatment resulted in complete response, but, after the 136th infusion of the drug at age 53 years, the patient was hospitalized for sudden onset of diabetic ketoacidosis. He was diagnosed with immune checkpoint inhibitor-induced T1DM (ICI-DM), which developed 1988 days (284 weeks) after initiation of nivolumab. HLA typing revealed disease susceptibility alleles for both fulminant T1DM and ICI-DM. With the increased survival after the ICI treatment, delayed-onset irAEs after long-term use of ICI have been reported; however, delayed-onset ICI-DM remains to be elucidated. This case provides important insight into ICI-DM that develops after prolonged ICI administration, and it suggests that patients should be monitored for ICI-DM regardless of the duration of ICI therapy.2024年01月, Diabetology international, 15(1) (1), 130 - 134, 英語, 国内誌
- 2023年12月, JCEM Case Reports研究論文(学術雑誌)
- PURPOSE: Predicting the therapeutic effects of first-generation somatostatin receptor ligands (fg-SRLs) is important when assessing or planning effective treatment strategies in patients with acromegaly. The oft-used maximum growth hormone (GH) suppression rate parameter of the octreotide test has a suboptimal predictive value. Therefore, this study explored newer parameters of the octreotide test for predicting the therapeutic effect of long-acting fg-SRLs. METHODS: In this single-center retrospective study, the octreotide test parameters and the therapeutic effects of fg-SRL at 3 months were investigated in 45 consecutive treatment-naïve patients with acromegaly between April 2008 and March 2023. Additionally, the relationship between the octreotide test parameters and the therapeutic effects of fg-SRLs was investigated. Tumor shrinkage was evaluated based on changes in the longitudinal diameter of the macroadenomas. The area GH suppression rate-time under the curve (AUC) and the time to nadir GH level were calculated and compared with the maximum GH suppression rate. RESULTS: The AUC estimated reductions in serum insulin-like growth factor I, and tumor shrinkage. The time to nadir GH level predicted tumor shrinkage more robustly than the maximum GH suppression rate in patients with macroadenoma. CONCLUSION: The AUC and time to nadir GH level may potentially be newer parameters of the octreotide test for estimating the therapeutic effect of fg-SRLs.2023年11月, Pituitary, 英語, 国際誌研究論文(学術雑誌)
- Pheochromocytomas and paragangliomas (PPGLs) are rare tumors that secrete catecholamines and arise from the adrenal medulla or extra-adrenal sympathetic ganglia. These tumors secrete adrenaline and noradrenaline, but paragangliomas usually produce only noradrenaline because of the lack of phenylethanolamine N-methyltransferase (PNMT) expression. Composite paragangliomas, which are complex tumors consisting of multiple types of neuroblastic cells, are extremely rare. We present the case of a 46-year-old woman with an atypical catecholamine profile who was preoperatively diagnosed with pheochromocytoma. However, postoperative pathology revealed that the patient had an extra-adrenal paraganglioma accompanied by a ganglioneuroma, which led to the diagnosis of a composite tumor. Interestingly, PNMT is expressed in both paragangliomas and ganglioneuromas. In addition, we reviewed reported composite paragangliomas and compared their clinical features with those of composite pheochromocytomas. We also discuss various aspects of the etiology of composite paragangliomas and the mechanism by which PNMT is expressed in tumors.2023年11月, Endocrine journal, 英語, 国内誌研究論文(学術雑誌)
- (一社)日本内分泌学会, 2023年10月, 日本内分泌学会雑誌, 99(2) (2), 587 - 587, 日本語
- (一社)日本内分泌学会, 2023年10月, 日本内分泌学会雑誌, 99(2) (2), 608 - 608, 日本語
- (一社)日本内分泌学会, 2023年10月, 日本内分泌学会雑誌, 99(2) (2), 569 - 569, 日本語
- (一社)日本内分泌学会, 2023年10月, 日本内分泌学会雑誌, 99(2) (2), 569 - 569, 日本語
- (一社)日本内分泌学会, 2023年10月, 日本内分泌学会雑誌, 99(2) (2), 590 - 590, 日本語
- (一社)日本内分泌学会, 2023年10月, 日本内分泌学会雑誌, 99(2) (2), 622 - 622, 日本語
- GH activates GH receptors, which activates IGF-1 in the liver through a cascade of processes. The GH/IGF-1 axis plays an important role in the regulation of metabolism. Insufficient GH secretion results in short stature in childhood, while adult GH deficiency (AGHD) is observed in adulthood. The early diagnosis of AGHD is important for early initiation of GH replacement therapy. This review described the regulatory mechanisms of GH signaling based on nutritional status and a novel disease concept pathogenesis that causes AGHD. GH-dependent IGF-1 production in the liver is regulated by a complex interplay between nutritional status, hormones, and growth factors. GH resistance is an adaptive response that enhances survival during starvation and malnutrition. Sirtuin 1 (SIRT1) negatively regulates GH-induced IGF-I production in the liver by directly inhibiting STAT5 activation, which causes GH resistance under starvation and malnutrition. The presence of autoantibodies is strongly associated with the disruption of immune tolerance in pituitary cells. Pituitary-specific transcription factors (PIT-1) are essential for the development, differentiation, and maintenance of GH, PRL, and TSH producing cells. However, the underlying mechanism that causes immune intolerance to PIT-1 remain unclear. The GH-IGF-1 system plays a pivotal role in growth, and the involvement of SIRT1 in this regulatory mechanism presents an intriguing perspective on the interplay between nutrient metabolism and lifespan. The discovery of the anti-PIT-1 pituitary antibody, a novel disease concept associated with AGHD, has provided valuable insights, which serves as a significant milestone towards unraveling the complete pathogenesis of the disease.2023年08月, Endocrine journal, 英語, 国内誌研究論文(学術雑誌)
- 2023年07月, JCEM Case Reports研究論文(学術雑誌)
- OBJECTIVE: Thyroid-stimulating hormone (TSH) harmonization is effective in minimizing differences between the results of immunoassays in healthy subjects. However, the effectiveness of TSH harmonization in clinical practice has not been investigated. The aim of this study was to evaluate the instability of TSH harmonization in clinical practice. METHODS: We compared the reactivities of four harmonized TSH immunoassays using combined difference plots of 431 patients. We selected patients with statistically significant deviations in TSH levels and analyzed their thyroid hormone levels and clinical characteristics. RESULTS: The combined difference plots showed that one harmonized TSH immunoassay exhibited markedly different reactivity even after TSH harmonization compared with the other three immunoassays. Among 109 patients with mild-to-moderate elevation of TSH levels, we selected 15 patients with statistically significant deviations in TSH levels according to the difference plots of three harmonized TSH immunoassays, excluding one immunoassay that showed different reactivity. The thyroid hormone levels of three patients were misclassified as hypothyroidism or normal due to deviating TSH levels. In terms of clinical characteristics, these patients were in poor nutritional status and general condition, possibly due to their severe illness (e.g., advanced metastatic cancer). CONCLUSION: We have confirmed that TSH harmonization in clinical practice is relatively stable. However, some patients showed deviating TSH levels in the harmonized TSH immunoassays, indicating the need for caution, particularly in poorly nourished patients. This finding suggests the presence of factors that contribute to the instability of TSH harmonization in such cases. Further investigation is warranted to validate these results.2023年06月, Clinical endocrinology, 英語, 国際誌研究論文(学術雑誌)
- (一社)日本内分泌学会, 2023年05月, 日本内分泌学会雑誌, 99(1) (1), 295 - 295, 日本語
- (一社)日本内分泌学会, 2023年05月, 日本内分泌学会雑誌, 99(1) (1), 311 - 311, 日本語
- (一社)日本内分泌学会, 2023年05月, 日本内分泌学会雑誌, 99(1) (1), 332 - 332, 日本語
- (一社)日本内分泌学会, 2023年05月, 日本内分泌学会雑誌, 99(Suppl.Update) (Suppl.Update), 51 - 54, 日本語
- (一社)日本内分泌学会, 2023年03月, 日本内分泌学会雑誌, 98(5) (5), 1636 - 1636, 日本語
- There is uncertainty regarding the need for COVID-19 peri-vaccination glucocorticoid coverage in patients with adrenal insufficiency. In this survey conducted in a single tertiary medical institution, 167 consecutive outpatients taking physiological glucocorticoids because of adrenal insufficiency were included. The patients declared if they developed an adrenal crisis after vaccination, and the amount and duration of an increase in their glucocorticoid dosage, if any. None of the patients without preventive glucocorticoid increase suffered an adrenal crisis after COVID-19 vaccination. Only 8.3% (14 cases) and 27.5% (46 cases) of the patients needed to escalate the dose of glucocorticoids when systemic symptoms appeared after the first and second injections, respectively. Glucocorticoids were increased in patients <60 years of age more than in patients ≥60 years of age at the time of both the first (p = 0.026) and second injections (p = 0.005). Sex and the causes of adrenal insufficiency were not associated with the frequency of the patients who needed glucocorticoid dose escalation. In the cases with increased glucocorticoids, the median dosage for escalation was 10 mg (hydrocortisone equivalent). In conclusion, even without prophylactic glucocorticoid administration, adrenal crisis did not occur during the peri-COVID-19 vaccination period. The dose escalation of steroid was more frequent in younger patients following the second vaccination. Careful monitoring of adverse effects and the appropriate management of glucocorticoids when necessary are essential following COVID-19 vaccinations.2023年01月, Endocrine journal, 70(1) (1), 89 - 95, 英語, 国内誌研究論文(学術雑誌)
- Congenital hypopituitarism is a genetically heterogeneous condition that is part of a spectrum disorder that can include holoprosencephaly. Heterozygous mutations in SIX3 cause variable holoprosencephaly in humans and mice. We identified two children with neonatal hypopituitarism and thin pituitary stalk who were doubly heterozygous for rare, likely deleterious variants in the transcription factors SIX3 and POU1F1. We used genetically engineered mice to understand the disease pathophysiology. Pou1f1 loss of function heterozygotes are unaffected; Six3 heterozygotes have pituitary gland dysmorphology and incompletely ossified palate; and the Six3+/-; Pou1f1+/dw double; heterozygote mice have a pronounced phenotype, including pituitary growth through the palate. The interaction of Pou1f1 and Six3 in mice supports the possibility of digenic pituitary disease in children. Disruption of Six3 expression in the oral ectoderm completely ablated anterior pituitary development, and deletion of Six3 in the neural ectoderm blocked development of the pituitary stalk and both anterior and posterior pituitary lobes. Six3 is required in both oral and neural ectodermal tissues for activation of signaling pathways and transcription factors necessary for pituitary cell fate. These studies clarify the mechanism of SIX3 action in pituitary development and provide support for a digenic basis for hypopituitarism.2023年01月, Human molecular genetics, 32(3) (3), 367 - 385, 英語, 国際誌研究論文(学術雑誌)
- BACKGROUND: Bariatric surgery is an effective treatment for severe obesity and its associated medical problems. Preoperative factors that predict postoperative weight loss remain to be fully characterized, however. METHODS: Anthropometric and laboratory data were collected retrospectively for severely obese patients who underwent laparoscopic sleeve gastrectomy (LSG) between April 2016 and July 2019 at our hospital. Preoperative factors that predicted weight loss at 1 year after LSG were investigated. RESULTS: A total of 122 subjects (45 men and 77 women) underwent LSG. The mean ± SD age and body mass index at surgery were 44.4 ± 10.4 years and 40.7 ± 6.7 kg/m2. The percent total weight loss (%TWL) was 27.0 ± 8.6 among all subjects, 26.4 ± 8.0 among men, and 27.4 ± 8.9 among women, with no significant difference between the sexes. The %TWL showed a significant inverse correlation with serum cortisol level in men and with age and the visceral/subcutaneous fat area ratio in women. Multivariable regression analysis revealed the presence of type 2 diabetes and the serum cortisol concentration to be negatively associated with %TWL among all subjects and men, respectively. Receiver operating characteristic curve analysis identified an optimal cutoff of 10 µg/dL for prediction of a %TWL of ≥ 25 in men by serum cortisol level. CONCLUSIONS: Serum cortisol concentration was identified as a predictor for postoperative weight loss in men. Our results may thus help inform the decision to perform LSG or more effective surgical procedures in men with severe obesity.2023年01月, Obesity surgery, 英語, 国際誌研究論文(学術雑誌)
- CONTEXT: The occurrence of multiple endocrinopathies due to immune checkpoint inhibitors (ICIs) is a relatively common adverse event. However, the occurrence of a combination of hypophysitis and type 1 diabetes mellitus (T1DM) is extremely rare, and its clinical features are unclear. OBJECTIVE: We comparatively analyzed the clinical features of this combination and each individual ICI-induced endocrinopathy. METHODS: We reported 3 cases that we encountered and reviewed previously reported cases of patients with combined hypophysitis and T1DM due to ICIs. RESULTS: Anti-programmed cell death-1 (anti-PD-1) antibodies were prescribed to all 3 cases. The duration from ICI initiation to the onset of endocrine disease was 12 to 48 weeks. Several human leukocyte antigen (HLA) haplotypes that have disease susceptibility to hypophysitis were detected in all 3 patients. With the 17 previously reported cases, combined endocrinopathies were more common in men (85%). The onset age was in the 60s for both combined and single endocrinopathies. Anti-PD-1 antibodies were used in most of the cases (90%). The time from ICI initiation to the onset of endocrinopathies was 24 (8-76) weeks for hypophysitis and 32 (8-76) weeks for T1DM in patients with combined endocrinopathies, which was not significantly different from that for each single endocrinopathy. CONCLUSION: We presented 3 cases of patients with combined endocrinopathies of hypophysitis and T1DM that may have been caused by anti-PD-1 antibodies. There was no difference in the time from ICI initiation to the onset of endocrinopathies between combined and single endocrinopathies. Further case accumulation and pathogenic investigations are required.2023年01月, Journal of the Endocrine Society, 7(3) (3), bvad002, 英語, 国際誌研究論文(学術雑誌)
- INTRODUCTION: A recently discovered facet of paraneoplastic adrenocorticotropic hormone (ACTH) deficiency exists in two forms: a paraneoplastic spontaneous isolated ACTH deficiency (IAD) and an immune checkpoint inhibitor (ICI)-related hypophysitis. Autoantibodies against corticotrophs, such as circulating anti-proopiomelanocortin (POMC) antibodies are considered disease markers. However, the number of identified cases was limited, implying that the characteristics of these autoantibodies are not fully understood. METHODS: We investigate circulating autoimmune autoantibodies in detail through a novel case of IAD that developed as a paraneoplastic autoimmune ACTH deficiency. RESULTS: The patient developed IAD after 25 weeks of ICI therapy for metastasis of large-cell neuroendocrine carcinoma at 69 years of age. Ectopic ACTH expression and infiltration of CD3+, CD4+, CD8+, and CD20+ lymphocytes were observed in the tumor tissues and circulating anti-POMC antibodies were detected specifically in the patient's serum. Moreover, detailed analyses of immunofluorescence staining using patient serum revealed that the recognition site of the autoantibody was ACTH25-39, which had not been identified in previous cases of paraneoplastic autoimmune ACTH deficiency. CONCLUSION: This case involved a combination of paraneoplastic spontaneously acquired IAD and ICI-related hypophysitis occupying the middle ground. Moreover, our study reveals new aspects of anti-POMC antibodies in patients with paraneoplastic ACTH deficiency. This report expands our understanding of the immunological landscape and provides new insights for the identification of antibodies associated with paraneoplastic autoimmune ACTH deficiency.2023年, Frontiers in immunology, 14, 1284301 - 1284301, 英語, 国際誌研究論文(学術雑誌)
- Pheochromocytoma is a rare but life-threatening condition due to catecholamine release induced by drug treatments such as β-blockers or glucocorticoids. We present a case of hypertensive crisis due to pheochromocytoma, induced after the initiation of dexamethasone and landiolol during intensive care for severe coronavirus disease 2019 (COVID-19). Based on a detailed medical history review, the patient was previously diagnosed with primary aldosteronism by confirmatory tests, moreover, an abdominal computed tomography scan identified an adrenal tumor 2 years before current admission. We tentatively diagnosed the patient with pheochromocytoma and initiated α-blockers without conducting a catecholamine report, leading to stable hemodynamics. We present a successfully managed case of pheochromocytoma concomitant with COVID-19, which has become a global crisis.2022年11月, Endocrine journal, 英語, 国内誌研究論文(学術雑誌)
- 2022年11月, The American journal of medicine, 英語, 国際誌
- (有)科学評論社, 2022年09月, 糖尿病・内分泌代謝科, 55(3) (3), 333 - 340, 日本語ヒトiPS細胞を用いた下垂体疾患研究
- 2022年08月, Scientific reports, 12(1) (1), 13238 - 13238, 英語, 国際誌
- (一社)日本内分泌学会, 2022年08月, 日本内分泌学会雑誌, 98(Suppl.HPT) (Suppl.HPT), 81 - 83, 日本語
- (一社)日本内分泌学会, 2022年08月, 日本内分泌学会雑誌, 98(Suppl.HPT) (Suppl.HPT), 81 - 83, 日本語
- Cases in which bilateral adrenal 123I-Metaiodobenzylguanidine (123I-MIBG) scintigraphy accumulation is sometimes shown, with mildly elevated catecholamine (CA) or metanephrine (MN) levels (within 3 times the upper reference limit) are diagnostic dilemmas. We experienced 3 cases of adrenal incidentalomas with this dilemma in the differential diagnosis. The clinical diagnosis was subclinical Cushing's syndrome in 2 cases, and primary aldosteronism in 1. Despite suspected CA excess in clinical symptoms and imaging findings, the pathological findings of all these tumors were revealed to be cytochrome P450 family 11 subfamily B member 1 (CYP11B1) positive adrenocortical adenomas. Interestingly, adrenal medullary hyperplasia (AMH) was detected in the adrenal parenchyma of all those backgrounds. To clarify the clinical features of such cases, a cross-sectional study was conducted at the Kobe University Hospital from 2014 to 2020. One-hundred sixty-four patients who had undergone 123I-MIBG scintigraphy were recruited. Among them, 10 patients (6.1%) met the above criteria, including the presented 3 cases. Plasma adrenaline, noradrenaline, urinary metanephrine, and normetanephrine had values of 0.05 ± 0.05 ng/mL, 0.63 ± 0.32 ng/mL, 0.22 ± 0.05 mg/day, and 0.35 ± 0.16 mg/day, respectively. Nine cases were complicated with hypertension, and symptoms related to CA excess were observed. Half of them (5 cases) including presented 3 cases had unilateral adrenal tumors. These suggest that in cases of bilateral adrenal uptake on 123I-MIBG, AMH needs to be considered. Adrenocortical adenomas may be associated with AMH and further larger investigation is needed for this pathology.2022年06月, Scientific reports, 12(1) (1), 9276 - 9276, 英語, 国際誌研究論文(学術雑誌)
- PURPOSE: To clarify the characteristics of Cushing's disease (CD) patients who respond to the desmopressin (DDAVP) test and its underlying mechanisms. METHODS: Forty-seven patients with CD who underwent DDAVP testing were included. Patients were divided into two groups: DDAVP test (+) (adrenocorticotropic hormone [ACTH] levels increased by ≥ 1.5-fold during the DDAVP test) and DDAVP test (-) (ACTH levels increased by < 1.5-fold). AVP receptor expression levels in these tumors were quantified using quantitative RT-PCR and immunohistochemistry. AVP receptor promoter activity was analyzed using a dual-luciferase reporter assay system. RESULTS: Females (96.9%) and USP8 mutants (85.7%) were more prevalent in the DDAVP test (+) than in the DDAVP test (-). Indeed, the ACTH and cortisol responsiveness to DDAVP was greater in USP8 mutation positive tumors than that in USP8 wild type tumors (3.0-fold vs. 1.3-fold, 1.6-fold vs. 1.1-fold, respectively). Responsiveness to DDAVP was correlated with the expression levels of AVPR1B, but not with those of AVPR2. Comparably, Avpr1b promoter activity was enhanced by the overexpression of mutant USP8 compared to the wild type. CONCLUSIONS: We found that the responsiveness of ACTH to DDAVP in CD was greater in tumors with USP8 mutations. The present data suggest that USP8 mutations upregulate the AVPR1B promoter activity. Additionally, we showed that the DDAVP test can predict the presence of USP8 mutations.2022年04月, Pituitary, 25(3) (3), 496 - 507, 英語, 国際誌研究論文(学術雑誌)
- (一社)日本内分泌学会, 2022年04月, 日本内分泌学会雑誌, 98(1) (1), 315 - 315, 日本語末梢血FKBP5遺伝子発現はACTH非依存性に血中コルチゾールと関連する
- (一社)日本内分泌学会, 2022年04月, 日本内分泌学会雑誌, 98(1) (1), 331 - 331, 日本語内科における先端巨大症管理 単一施設成績
- (一社)日本内分泌学会, 2022年04月, 日本内分泌学会雑誌, 98(1) (1), 331 - 331, 日本語先端巨大症患者におけるBMIで層別化した肥満関連疾患の有病率
- (一社)日本内分泌学会, 2022年04月, 日本内分泌学会雑誌, 98(1) (1), 345 - 345, 日本語当院における成人成長ホルモン分泌不全症患者のGH治療による耐糖能変化に寄与する因子の検討
- (一社)日本糖尿病学会, 2022年04月, 糖尿病, 65(Suppl.1) (Suppl.1), S - 197, 日本語1型糖尿病と自己免疫性甲状腺疾患との関連についての検討
- (一社)日本糖尿病学会, 2022年04月, 糖尿病, 65(Suppl.1) (Suppl.1), S - 208, 日本語Free StyleリブレLink使用者の背景および導入前後におけるスキャン回数、HbA1cの変化の検討
- (一社)日本糖尿病学会, 2022年04月, 糖尿病, 65(Suppl.1) (Suppl.1), S - 231, 日本語若年で糖尿病を発症した小児がん経験者の1例
- (一社)日本内分泌学会, 2022年04月, 日本内分泌学会雑誌, 98(1) (1), 272 - 272, 日本語疾患iPS細胞を用いた自己免疫性下垂体疾患のin vitro疾患モデル樹立と進展防止のための創薬への応用
- (一社)日本内分泌学会, 2022年04月, 日本内分泌学会雑誌, 98(1) (1), 315 - 315, 日本語末梢血FKBP5遺伝子発現はACTH非依存性に血中コルチゾールと関連する
- (一社)日本内分泌学会, 2022年04月, 日本内分泌学会雑誌, 98(1) (1), 331 - 331, 日本語内科における先端巨大症管理 単一施設成績
- (一社)日本内分泌学会, 2022年04月, 日本内分泌学会雑誌, 98(1) (1), 331 - 331, 日本語先端巨大症患者におけるBMIで層別化した肥満関連疾患の有病率
- (一社)日本内分泌学会, 2022年04月, 日本内分泌学会雑誌, 98(1) (1), 345 - 345, 日本語当院における成人成長ホルモン分泌不全症患者のGH治療による耐糖能変化に寄与する因子の検討
- (一社)日本糖尿病学会, 2022年04月, 糖尿病, 65(Suppl.1) (Suppl.1), S - 160, 日本語先端巨大症患者におけるBMIと肥満関連疾患の有病率についての検討
- (一社)日本糖尿病学会, 2022年04月, 糖尿病, 65(Suppl.1) (Suppl.1), S - 161, 日本語成人成長ホルモン分泌不全症(AGHD)患者におけるGH補充療法による耐糖能への影響に関する検討
- (一社)日本糖尿病学会, 2022年04月, 糖尿病, 65(Suppl.1) (Suppl.1), S - 169, 日本語1型糖尿病(T1DM)患者におけるIGF-Iと自由行動下のCGM指標に関連する因子の検討
- (一社)日本内分泌学会, 2022年03月, 日本内分泌学会雑誌, 97(5) (5), 1622 - 1622, 日本語
- Kenny-Caffey syndrome type 2 (KCS2) is an extremely rare skeletal disorder involving hypoparathyroidism and short stature. It has an autosomal dominant pattern of inheritance and is caused by variants in the FAM111 trypsin-like peptidase A (FAM111A) gene. This disease is often difficult to diagnose due to a wide range of more common diseases manifesting hypoparathyroidism and short stature. Herein, we present the case of a 56-year-old female patient with idiopathic hypoparathyroidism and a short stature. The patient was treated for these conditions during childhood. Upon re-evaluating the etiology of KCS2, we suspected that the patient had the disorder because of clinical manifestations, such as cortical thickening and medullary stenosis of the bones, and lack of intellectual abnormalities. Genetic testing identified a heterozygous missense variant in the FAM111A gene (p.R569H). Interestingly, the patient also had bilateral sensorineural hearing loss and vestibular dysfunction, which have been rarely described in previous reports of pediatric cases. In KCS2, inner ear dysfunction due to Eustachian tube dysfunction may progress in middle age or later. However, this disease is now being reported in younger patients. Nevertheless, our case may be instructive of how such cases emerge chronically after middle age. Herein, we also provide a literature review of KCS2.2022年, Frontiers in endocrinology, 13, 1073173 - 1073173, 英語, 国際誌
- Combined pituitary hormone deficiency (CPHD) is not a rare disorder, with a frequency of approximately 1 case per 4,000 live births. However, in most cases, a genetic diagnosis is not available. Furthermore, the diagnosis is challenging because no clear correlation exists between the pituitary hormones affected and the gene(s) responsible for the disorder. Next-generation sequencing (NGS) has recently been widely used to identify novel genes that cause (or putatively cause) CPHD. This review outlines causative genes for CPHD that have been newly reported in recent years. Moreover, novel variants of known CPHD-related genes (POU1F1 and GH1 genes) that contribute to CPHD through unique mechanisms are also discussed in this review. From a clinical perspective, variants in some of the recently identified causative genes result in extra-pituitary phenotypes. Clinical research on the related symptoms and basic research on pituitary formation may help in inferring the causative gene(s) of CPHD. Future NGS analysis of a large number of CPHD cases may reveal new genes related to pituitary development. Clarifying the causative genes of CPHD may help to understand the process of pituitary development. We hope that future innovations will lead to the identification of genes responsible for CPHD and pituitary development.2022年, Frontiers in endocrinology, 13, 1008306 - 1008306, 英語, 国際誌[査読有り]研究論文(学術雑誌)
- Pituitary autoimmunity is one of the principal causes of hypopituitarism. Additionally, hypophysitis is one of the immune-related adverse events associated with immunotherapy. Recent case-oriented research has revealed a novel type of autoimmune hypophysitis, anti-PIT-1 hypophysitis, related to isolated adrenocorticotropic hormone (ACTH) deficiency and immune checkpoint inhibitor-related hypophysitis, as a form of paraneoplastic syndrome. Under these conditions, the ectopic expression of pituitary antigens present in tumors evokes a breakdown of immune tolerance, resulting in the production of autoantibodies and autoreactive cytotoxic T cells that specifically harm pituitary cells. Consequently, an innovative clinical entity of paraneoplastic autoimmune hypophysitis has been purported. This novel concept and its underlying mechanisms provide clues for understanding the pathogenesis of autoimmune pituitary diseases and can be applied to other autoimmune diseases. This review discusses the etiology of paraneoplastic autoimmune hypophysitis and its future.2021年11月, Best practice & research. Clinical endocrinology & metabolism, 101601 - 101601, 英語, 国際誌[査読有り][招待有り]研究論文(学術雑誌)
- (一社)日本内分泌学会, 2021年10月, 日本内分泌学会雑誌, 97(2) (2), 505 - 505, 日本語
- (一社)日本内分泌学会, 2021年10月, 日本内分泌学会雑誌, 97(2) (2), 528 - 528, 日本語
- (一社)日本内分泌学会, 2021年10月, 日本内分泌学会雑誌, 97(2) (2), 533 - 533, 日本語
- (一社)日本内分泌学会, 2021年10月, 日本内分泌学会雑誌, 97(2) (2), 539 - 539, 日本語
- (一社)日本内分泌学会, 2021年10月, 日本内分泌学会雑誌, 97(2) (2), 487 - 487, 日本語
- (一社)日本内分泌学会, 2021年10月, 日本内分泌学会雑誌, 97(2) (2), 501 - 501, 日本語
- Pituitary hormone deficiency occurs in ∼1:4,000 live births. Approximately 3% of the cases are due to mutations in the alpha isoform of POU1F1, a pituitary-specific transcriptional activator. We found four separate heterozygous missense variants in unrelated individuals with hypopituitarism that were predicted to affect a minor isoform, POU1F1 beta, which can act as a transcriptional repressor. These variants retain repressor activity, but they shift splicing to favor the expression of the beta isoform, resulting in dominant-negative loss of function. Using a high-throughput splicing reporter assay, we tested 1,070 single-nucleotide variants in POU1F1. We identified 96 splice-disruptive variants, including 14 synonymous variants. In separate cohorts, we found two additional synonymous variants nominated by this screen that co-segregate with hypopituitarism. This study underlines the importance of evaluating the impact of variants on splicing and provides a catalog for interpretation of variants of unknown significance in POU1F1.2021年07月, American journal of human genetics, 英語, 国際誌[査読有り]研究論文(学術雑誌)
- BACKGROUND: Immune checkpoint inhibitors (ICIs) as a cancer immunotherapy have emerged as a treatment for multiple advanced cancer types. Because of enhanced immune responses, immune-related adverse events (irAEs), including endocrinopathies such as hypophysitis, have been associated with the use of ICIs. Most underlying mechanisms of ICI-related hypophysitis remain unclear, especially for programmed cell death-1 (PD-1)/PD-1 ligand 1 (PD-L1) inhibitors. We hypothesized that ICI-related hypophysitis is associated with paraneoplastic syndrome caused by ectopic expression of pituitary-specific antigens. METHODS: Twenty consecutive patients with ICI-related hypophysitis between 2017 and 2019 at Kobe University Hospital were retrospectively analyzed. Circulating anti-pituitary antibodies were detected using immunofluorescence staining and immunoblotting. Ectopic expression of pituitary autoantigens in tumor specimens was also examined. RESULTS: Eighteen patients were treated with PD-1/PD-L1 inhibitors, and two were treated with a combination of cytotoxic T-lymphocyte antigen-4 (CTLA-4) and PD-1 inhibitors. All patients showed adrenocorticotropic hormone (ACTH) deficiency and additionally, three showed thyroid-stimulating hormone (TSH) deficiency, and one showed gonadotropin-releasing hormone (GnRH) deficiency. Among these patients, three exhibited anti-pituitary antibodies, two with anti-corticotroph antibody and one with anti-somatotroph antibody. Interestingly, the anti-corticotroph antibody recognized proopiomelanocortin (POMC) and those two patients exhibited ectopic ACTH expression in the tumor, while the patients without anti-corticotroph antibody did not. CONCLUSIONS: We demonstrated 10% of PD-1/PD-L1 inhibitors-related hypophysitis were associated with the autoimmunity against corticotrophs and maybe caused as a form of paraneoplastic syndrome, in which ectopic expression of ACTH in the tumor was observed. It is also suggested that the pathophysiology is heterogenous in ICI-related hypophysitis.2021年05月, Cancer immunology, immunotherapy : CII, 70(12) (12), 3669 - 3677, 英語, 国際誌研究論文(学術雑誌)
- 2021年05月, Journal of the Endocrine SocietySIX3 Variant Causes Pituitary Stalk Interruption Syndrome and Combined Pituitary Hormone Deficiency研究論文(学術雑誌)
- OBJECTIVE: The transcription factor OTX2 is implicated in ocular, craniofacial, and pituitary development. DESIGN: We aimed to establish the contribution of OTX2 mutations in congenital hypopituitarism patients with/without eye abnormalities, study functional consequences, and establish OTX2 in the human brain, with a view to investigating the mechanism of action. METHODS: We screened patients from the UK (n=103), international centers (n=24), and Brazil (n=282); 145 were within the septo-optic dysplasia spectrum, and 264 had no eye phenotype. Transactivation ability of OTX2 variants was analysed in murine hypothalamic GT1-7 neurons. In situ hybridization was performed on human embryonic brain sections. Genetically engineered mice were generated with a series of C-terminal OTX2 variants. RESULTS: Two chromosomal deletions and six haploinsufficient mutations were identified in individuals with eye abnormalities; an affected relative of one patient harboured the same mutation without an ocular phenotype. OTX2 truncations led to significant transactivation reduction. A missense variant was identified in another patient without eye abnormalities, however studies revealed it was most likely not causative. In the mouse, truncations proximal to aa219 caused anophthalmia, while distal truncations and the missense variant were tolerated. During human embryogenesis, OTX2 was expressed in the posterior pituitary, retina, ear, thalamus, choroid plexus, and partially in the hypothalamus, but not in the anterior pituitary. CONCLUSIONS: OTX2 mutations are rarely associated with hypopituitarism in isolation without eye abnormalities, and may be variably penetrant, even within the same pedigree. Our data suggest that the endocrine phenotypes in patients with OTX2 mutations are of hypothalamic origin.2021年05月, European journal of endocrinology, 英語, 国際誌研究論文(学術雑誌)
- Targeted oncogenesis is the process of driving tumor formation by engineering transgenic mice that express an oncogene under the control of a cell-type specific promoter. Such tumors can be adapted to cell culture, providing immortalized cell lines. To make it feasible to follow the process of tumorigenesis and increase the opportunity for generating cell lines, we developed a mouse strain that expresses SV40 T antigens in response to cre-recombinase. Using CRISPR/Cas9 we inserted a cassette with coding sequences for SV40 T antigens and an internal ribosome entry site with green fluorescent protein cassette (IRES-GFP) into the Rosa26 locus, downstream from a stop sequence flanked by loxP sites: Rosa26LSL-SV40-GFP. These mice were mated with previously established Prop1-cre and Tshb-cre transgenic lines. Both the Rosa26LSL-SV40-GFP/+; Prop1-cre and Rosa26LSL-SV40-GFP/+; Tshb-cre mice developed fully penetrant dwarfism and large tumors by 4 weeks. Tumors from both of these mouse lines were adapted to growth in cell culture. We have established a progenitor-like cell line (PIT-P1) that expresses Sox2 and Pitx1, and a thyrotrope-like cell line (PIT-T1) that expresses Pou1f1 and Cga. These studies demonstrate the utility of the novel, Rosa26LSL-SV40-GFP mouse line for reliable targeted oncogenesis and development of unique cell lines.The Endocrine Society, 2021年04月, Endocrinology, 英語, 国際誌研究論文(学術雑誌)
- CONTEXT: Luscan-Lumish syndrome (LLS) is characterized by postnatal overgrowth, obesity, Chiari I malformation, seizures, and intellectual disability. SET domain-containing protein 2 (SETD2) is a histone methyltransferase, where mutations in the gene are associated with the development of LLS. However, mechanisms underlying LLS remain unclear. CASE DESCRIPTION: A 20-year-old man was referred to our hospital because of tall stature. His body height was 188.2 cm (+3.18 SD) and he showed obesity with a body mass index of 28.4 kg/m2. He exhibited acral overgrowth, jaw malocclusion, and prognathism, but no history of seizures, intellectual disability, or speech delay. Serum growth hormone (GH), insulin-like growth factor 1 (IGF-1), and nadir GH levels after administration of 75 g oral glucose were within normal range. Pituitary magnetic resonance imaging showed no pituitary adenoma, but Chiari I malformation. Whole exome sequencing analysis of the proband revealed a de novo heterozygous germline mutation in SETD2 (c.236T>A, p.L79H). Skin fibroblasts derived from the patient grew faster than those from his father and the control subject. In addition, these cells showed enhanced tyrosine phosphorylation and transcriptional activity of signal transducer and activator of transcription 5b (STAT5b) and increased IGF-1 expression induced by GH. CONCLUSION: This is a mild case of LLS with a novel mutation in SETD2 without neurological symptoms. LLS should be differentiated in a patient with gigantism without pituitary tumors. Although further investigation is necessary, this is the first study to suggest the involvement of aberrant GH signaling in the development of LLS.2021年03月, The Journal of clinical endocrinology and metabolism, 106(3) (3), 718 - 723, 英語, 国際誌研究論文(学術雑誌)
- Anti-pituitary-specific transcription factor 1 (PIT-1) hypophysitis (anti-PIT-1 antibody syndrome) is a thymoma-associated autoimmune disease characterized by acquired growth hormone (GH), prolactin (PRL), and thyrotropin (TSH) deficiencies due to autoimmunity against PIT-1. Ectopic expression of PIT-1 in the thymoma plays a causal role in development of the disease. Here, we report 2 cases of anti-PIT-1 hypophysitis exhibiting as a form of paraneoplastic syndrome with conditions other than thymoma. A 79-year-old woman (case 1) and an 86-year-old man (case 2) were referred with a suspicion of anti-PIT-1 hypophysitis because of acquired GH, PRL, and TSH deficiencies. Case 1 was complicated by diffuse large B-cell lymphoma (DLBCL) of the bladder and case 2 was diagnosed with malignancy with multiple metastases of unknown origin. Because circulating anti-PIT-1 antibody was detected, both patients were diagnosed with anti-PIT-1 hypophysitis. Circulating PIT-1-reactive T cells were detected in case 1 via enzyme-linked immunospot (ELISPOT) assay. Interestingly, the PIT-1 protein was ectopically expressed in the DLBCL cells of case 1, whereas DLBCL tissues derived from patients without anti-PIT-1 hypophysitis were negative for PIT-1. In case 2, the materials were not available because of best supportive care was under way. These data show that anti-PIT-1 hypophysitis is associated not only with thymoma but also with other malignancies. Additionally, the ectopic expression of PIT-1 in the DLBCL tissues and presence of PIT-1-reactive T cells suggested that the underlying mechanisms were similar to those observed in thymoma. Thus, anti-PIT-1 hypophysitis is defined as a form of paraneoplastic syndrome.2021年03月, Journal of the Endocrine Society, 5(3) (3), bvaa194, 英語, 国際誌
- 2021年, 月刊糖尿病・内分泌代謝科, 53(2) (2)抗PIT-1下垂体炎
- Objective: Heterogeneous clinical characteristics are observed in acquired isolated adrenocorticotropic hormone (ACTH) deficiency (IAD); however, its classification remains to be established because of its largely unknown pathophysiology. In IAD, anti-pituitary antibodies have been detected in some patients, although their significance remains unclear. Therefore, this study aimed to classify patients with IAD and to clarify the significance of anti-pituitary antibodies. Design and Methods: We analyzed 46 consecutive patients with IAD. Serum anti-pituitary antibodies were analyzed via immunofluorescence staining using a mouse pituitary tissue. Principal component and cluster analyses were performed to classify IAD patients based on clinical characteristics and autoantibodies. Results: Immunofluorescence analysis using the sera revealed that 58% of patients showed anti-corticotroph antibodies and 6% of patients showed anti-follicular stellate cell (FSC) antibodies. Principal component analysis demonstrated that three parameters could explain 70% of the patients. Hierarchical cluster analysis showed three clusters: Groups A and B comprised patients who were positive for anti-corticotroph antibodies, and plasma ACTH levels were extremely low. Groups A and B comprised middle-aged or elderly men and middle-aged women, respectively. Group C comprised patients who were positive for the anti-FSC antibody and elderly men; plasma ACTH levels were relatively high. Conclusions: Patients with IAD were classified into three groups based on clinical characteristics and autoantibodies. The presence of anti-corticotroph antibody suggested severe injury to corticotrophs. This new classification clearly demonstrated the heterogeneity in the pathogenesis of IAD.Frontiers Media SA, 2021年, Frontiers in endocrinology, 12, 578802 - 578802, 英語, 国際誌研究論文(学術雑誌)
- BACKGROUND: Plasma renin activity (PRA) is generally increased in patients with pheochromocytoma (PCC) due to low circulating plasma volume and activation of β-1 adrenergic receptor signaling. However, there has been no study on the aldosterone renin ratio (ARR) in patients with PCC. To elucidate the issue, this study aimed to determine the PRA, plasma aldosterone concentration (PAC), and ARR in patients with PCC and compare them with those in patients with subclinical Cushing's syndrome (SCS) and non-functioning adrenal adenoma (NFA). METHODS: In this retrospective single-center, cross-sectional study, 67 consecutive patients with adrenal tumors (PCC (n = 18), SCS (n = 18), and NFA (n = 31)) diagnosed at Kobe University Hospital between 2008 and 2014 were enrolled. RESULTS: PRA was significantly higher in patients with PCC than in those with SCS and NFA (2.1 (1.3 ~ 2.8) vs. 0.7 (0.5 ~ 1.8) and 0.9 (0.6 ~ 1.4) ng/mL/h; p = 0.018 and p = 0.025). Although PACs were comparable among the three groups, ARR was significantly lower in patients with PCC than in those with SCS and NFA (70.5 (45.5 ~ 79.5) vs. 156.0 (92.9 ~ 194.5) and 114.9 (90.1 ~ 153.4); p = 0.001 and p < 0.001). Receiver operating characteristic curve analysis demonstrated that, in differentiating PCC from NFA, PRA > 1.55 ng/mL/h showed a sensitivity of 70.0% and specificity of 80.6%. Interestingly, ARR < 95.4 showed a sensitivity of 83.3% and specificity of 86.7%, which were higher than those in PRA. CONCLUSIONS: ARR decreased in patients with PCC, which was a more sensitive marker than PRA. Further study is necessary to understand the usefulness of this convenient marker in the detection of PCC. TRIAL REGISTRATION: This study was not registered because of the retrospective analysis.2020年09月, BMC endocrine disorders, 20(1) (1), 140 - 140, 英語, 国際誌研究論文(学術雑誌)
- The transcription factor ISL1 is expressed in pituitary gland stem cells and the thyrotrope and gonadotrope lineages. Pituitary-specific Isl1 deletion causes hypopituitarism with increased stem cell apoptosis, reduced differentiation of thyrotropes and gonadotropes, and reduced body size. Conditional Isl1 deletion causes development of multiple Rathke's cleft-like cysts, with 100% penetrance. Foxa1 and Foxj1 are abnormally expressed in the pituitary gland and associated with a ciliogenic gene-expression program in the cysts. We confirmed expression of FOXA1, FOXJ1, and stem cell markers in human Rathke's cleft cyst tissue, but not craniopharyngiomas, which suggests these transcription factors are useful, pathological markers for diagnosis of Rathke's cleft cysts. These studies support a model whereby expression of ISL1 in pituitary progenitors drives differentiation into thyrotropes and gonadotropes and without it, activation of FOXA1 and FOXJ1 permits development of an oral epithelial cell fate with mucinous cysts. This pituitary-specific Isl1 mouse knockout sheds light on the etiology of Rathke's cleft cysts and the role of ISL1 in normal pituitary development.2020年08月, The Journal of clinical investigation, 130(8) (8), 4501 - 4515, 英語, 国際誌研究論文(学術雑誌)
- Combined pituitary hormone deficiency (CPHD) is a genetically heterogeneous disorder caused by mutations in over 30 genes. The loss-of-function mutations in many of these genes, including orthodenticle homeobox 2 (OTX2), can present with a broad range of clinical symptoms, which provides a challenge for predicting phenotype from genotype. Another challenge in human genetics is functional evaluation of rare genetic variants that are predicted to be deleterious. Zebrafish are an excellent vertebrate model for evaluating gene function and disease pathogenesis, especially because large numbers of progeny can be obtained, overcoming the challenge of individual variation. To clarify the utility of zebrafish for the analysis of CPHD-related genes, we analyzed the effect of OTX2 loss of function in zebrafish. The otx2b gene is expressed in the developing hypothalamus, and otx2bhu3625/hu3625 fish exhibit multiple defects in the development of head structures and are not viable past 10 days post fertilization (dpf). Otx2bhu3625/hu3625 fish have a small hypothalamus and low expression of pituitary growth hormone and prolactin (prl). The gills of otx2bhu3625/hu3625 fish have weak sodium influx, consistent with the role of prolactin in osmoregulation. The otx2bhu3625/hu3625 eyes are microphthalmic with colobomas, which may underlie the inability of the mutant fish to find food. The small pituitary and eyes are associated with reduced cell proliferation and increased apoptosis evident at 3 and 5 dpf, respectively. These observations establish the zebrafish as a useful tool for the analysis of CPHD genes with variable and complex phenotypes.2020年06月, Human molecular genetics, 29(10) (10), 1648 - 1657, 英語, 国際誌研究論文(学術雑誌)
- CONTEXT: Germline mutations in fumarate hydratase (FH) gene are known to cause hereditary leiomyomatosis and renal cell carcinoma (HLRCC) and are occasionally accompanied with cutaneous and uterine leiomyoma or cortisol-producing adrenocortical hyperplasia. However, the association between FH mutations and cardiac or adrenocortical tumors has remained unknown. Here, we identified a novel deletion in FH, exhibiting cardiac myxoma and subclinical Cushing syndrome due to adrenocortical tumor. CASE DESCRIPTION: A 44-year-old man was referred to our hospital for cardiac and adrenal tumor evaluation. He had a history of multiple painful, dermal papules and nodules diagnosed as cutaneous leiomyoma. The surgically resected cardiac tumor was diagnosed as myxoma. The adrenal tumor was clinically diagnosed as subclinical Cushing syndrome. Laparoscopically resected adrenal tumor was pathologically diagnosed as adrenocortical adenoma harboring unique histological findings similar to primary pigmented nodular adrenocortical disease (PPNAD). DNA analysis revealed a germline deletion in FH c0.737delT (p. Phe225Leufs*31) and loss of heterozygosity (LOH) in cardiac myxoma. As a functional analysis of FH in cardiac myxoma, low FH protein expression with elevated 2-succinocysteine (2SC), a marker of FH dysfunction, was immunohistochemically detected. However, in adrenocortical tumor, LOH of FH was not detected, and FH or 2SC expression was not altered. CONCLUSIONS: This is the first case of HLRCC complicated by cardiac myxoma. LOH of FH deletion and its dysfunction were identified in cardiac myxoma. The association between FH deletion and adrenocortical lesion, however, needs to be further clarified.2020年06月, The Journal of clinical endocrinology and metabolism, 105(6) (6), 英語, 国際誌研究論文(学術雑誌)
- 2020年05月, Journal of the Endocrine SocietySAT-291 SIX3 Is Essential for Hypothalamic and Pituitary Development研究論文(学術雑誌)
- Some endocrine disorders, including hypophysitis and isolated adrenocorticotropic hormone (ACTH) deficiency, are caused by an autoimmune response to endocrine organs. Although the pathogenesis of some autoimmune endocrine diseases has been elucidated, it remains obscure for most. Anti-PIT-1 hypophysitis (anti-PIT-1 antibody syndrome) is a newly described pituitary autoimmune disease characterized by acquired and specific growth hormone (GH), prolactin (PRL), and thyroid-stimulating hormone (TSH) deficiencies. This disorder is associated with a thymoma or neoplasm that ectopically expresses pituitary-specific transcription factor 1 (PIT-1) protein. Circulating anti-PIT-1 antibody is a disease marker, and PIT-1-reactive cytotoxic T cells (CTLs) play a pivotal role in disease development. In addition, isolated ACTH deficiency appears to be caused by autoimmunity to corticotrophs; however, the pathogenesis remains unclear. A recently described case of isolated ACTH deficiency with large cell neuroendocrine carcinoma (LCNEC) showed ectopically expressed proopiomelanocortin (POMC), and circulating anti-POMC antibody and POMC-reactive CTLs were also detected. As CTL infiltrations around corticotrophs were also observed, isolated ACTH deficiency may be associated at least in part with a paraneoplastic syndrome. Although several underlying mechanisms for pituitary autoimmunity have been proposed, these observations highlight the importance of paraneoplastic syndrome as a cause of pituitary autoimmune disease. In this review, we focus on the pathophysiology and connection of anti-PIT-1 hypophysitis and isolated ACTH deficiency and discuss the state-of-art knowledge for understanding pituitary autoimmunity.2020年04月, Endocrine reviews, 41(2) (2), 英語, 国際誌研究論文(学術雑誌)
- Pituitary develops from oral ectoderm in contact with adjacent ventral hypothalamus. Impairment in this process results in congenital pituitary hypoplasia (CPH); however, there have been no human disease models for CPH thus far, prohibiting the elucidation of the underlying mechanisms. In this study, we established a disease model of CPH using patient-derived induced pluripotent stem cells (iPSCs) and 3D organoid technique, in which oral ectoderm and hypothalamus develop simultaneously. Interestingly, patient iPSCs with a heterozygous mutation in the orthodenticle homeobox 2 (OTX2) gene showed increased apoptosis in the pituitary progenitor cells, and the differentiation into pituitary hormone-producing cells was severely impaired. As an underlying mechanism, OTX2 in hypothalamus, not in oral ectoderm, was essential for progenitor cell maintenance by regulating LHX3 expression in oral ectoderm via FGF10 expression in the hypothalamus. Convincingly, the phenotype was reversed by the correction of the mutation, and the haploinsufficiency of OTX2 in control iPSCs revealed a similar phenotype, demonstrating that this mutation was responsible. Thus, we established an iPSC-based congenital pituitary disease model, which recapitulated interaction between hypothalamus and oral ectoderm and demonstrated the essential role of hypothalamic OTX2.2020年02月, The Journal of clinical investigation, 130(2) (2), 641 - 654, 英語, 国際誌研究論文(学術雑誌)
- Context: Anti-pituitary-specific transcriptional factor-1 (anti-PIT-1) antibody syndrome is characterized by acquired and specific deficiencies in growth hormone, prolactin, and thyroid-stimulating hormone. Although PIT-1-reactive cytotoxic T lymphocytes (CTLs) have been speculated to recognize anterior pituitary cells and to cause the injury in the pathogenesis of the syndrome, it remains unclear whether endogenous PIT-1 protein is processed through the proteolytic pathway and presented as an antigen on anterior pituitary cells. Objective: To examine how PIT-1 protein is processed and whether its epitope is presented by major histocompatibility complex (MHC)/HLA class I on anterior pituitary cells. Materials and Methods: Immunofluorescence staining and proximity ligation assay (PLA) were performed using anti-PIT-1 antibody and patients' sera on PIT-1-expressing cell line GH3 cells and human induced pluripotent stem cell (iPSC)-derived pituitary tissues. Results: PIT-1 was colocalized with MHC class I molecules, calnexin, and GM130 in the cytosol. PLA results showed that PIT-1 epitope was presented by MHC/HLA class I molecules on the cell surface of GH3 cells and iPSC-derived pituitary cells. The number of PIT-1/HLA complexes on the cell surface of pituitary cells in the patient was comparable with that in the control subject. Conclusions: Our data indicate that PIT-1 protein is processed in the antigen presentation pathway and that its epitopes are presented by in MHC/HLA class I on anterior pituitary cells, supporting the hypothesis that PIT-1-reactive CTLs caused the cell-specific damage. It is also suggested that number of epitope presentation was not associated with the pathogenesis of anti-PIT-1 antibody syndrome.2019年11月, Journal of the Endocrine Society, 3(11) (11), 1969 - 1978, 英語, 国際誌研究論文(学術雑誌)
- Although acromegaly has been reported in patients with Neurofibromatosis type 1 (NF1), these cases have not been associated with growth hormone (GH)-producing somatotroph adenoma, but with optic pathway glioma. A 68 year-old Japanese woman, who had been clinically diagnosed with NF1, was referred to our hospital due to a thyroid tumor and hypercalcemia. Acromegaly was suspected due to her facial features, and subsequent examinations revealed the presence of GH excess with a pituitary tumor, leading to the diagnosis of acromegaly. Histological and immunohistochemical analysis demonstrated an eosinophilic pituitary adenoma with diffuse positivity for GH, indicating typical somatotroph adenoma. In addition, her thyroid tumor was diagnosed histologically as follicular thyroid carcinoma (FTC) with primary hyperparathyroidism (PHPT). To investigate the pathogenesis of this untypical multiple endocrine tumor case of NF1, genetic analysis was performed using peripheral leukocytes and tissue of resected tumors. A heterozygous novel germline nonsense mutation (p.Arg1534*) in exon 35 of the NF1 gene was detected from peripheral leukocytes, which results in a truncated protein lacking the critical domain for GTPase activity, strongly suggesting its causal role in NF1. The loss of heterozygosity (LOH) in exon 35 of the NF1 gene was not detected in the somatotroph adenoma, parathyroid adenoma, and FTC. Although any mutations of the following genes; MEN1, CDKN1B, and PAX8-PPARγ were not detected, a heterozygous GNAS R201C mutation was detected in the somatotroph adenoma. To our knowledge, this is the first rare MEN1-like case of genetically diagnosed NF1 complicated with acromegaly caused by a somatotroph adenoma.2019年10月, Endocrine journal, 66(10) (10), 853 - 857, 英語, 国内誌研究論文(学術雑誌)
- PURPOSE: IgG4-related disease involves various organs including the pituitary and pancreas. The prevalence of IgG4-related hypophysitis is relatively rare compared with IgG4-related pancreatitis (autoimmune pancreatitis). Although several cases demonstrating both autoimmune pancreatitis and hypophysitis have been reported, the prevalence of IgG4-related hypophysitis in patients with autoimmune pancreatitis remains unknown. This study aimed at screening for IgG4-related hypophysitis to accurately determine its prevalence in patients with autoimmune pancreatitis. METHODS: In this cohort study, we screened IgG4-related hypophysitis via pituitary magnetic resonance imaging (MRI) and endocrinological examination in 27 patients who were undergoing follow-up for autoimmune pancreatitis at Kobe University Hospital between 2014 and 2018. RESULTS: Among 27 patients with autoimmune pancreatitis, 5 patients exhibited morphological abnormalities in the pituitary (18.5%). Among them, one patient (3.7%) met the criteria for hypophysitis with an enlarged pituitary and stalk concomitant with hypopituitarism. After glucocorticoid treatment, the enlarged pituitary shrank and became empty sella during the clinical course. Four patients (14.8%) revealed empty sella without obvious pituitary dysfunction. Four of 5 patients with morphological pituitary abnormalities showed multiple organ involvement in addition to pancreatic and pituitary involvement. Accordingly, multiple organ involvement was more prevalent in patients with morphological pituitary abnormalities (80%) compared to those without (48%). CONCLUSIONS: Although a large-scale study is necessary to validate these results, these data suggest that the prevalence of hypophysitis in patients with autoimmune pancreatitis may be underestimated. Based on our findings, we recommend screening for hypophysitis, especially in patients with multiple organ involvement.2019年02月, Pituitary, 22(1) (1), 54 - 61, 英語, 国際誌研究論文(学術雑誌)
- PURPOSE: In isolated adrenocorticoropic hormone (ACTH) deficiency (IAD), autoimmunity against corticotrophs has been suggested; however, the pathogenesis remains largely unknown. Large cell neuroendocrine carcinoma (LCNEC) of the lung is a pulmonary tumor of high-grade malignant neuroendocrine tumor and it reportedly caused paraneoplastic syndrome by autoimmunity in several cases. METHODS: A 42-year-old woman with isolated adrenocorticotropic (ACTH) hormone deficiency (IAD) was diagnosed with large cell neuroendocrine carcinoma (LCNEC) 3 years after being diagnosed with IAD. We hypothesized that the LCNEC played a causal role in the development of IAD as a paraneoplastic syndrome and analyzed the autoimmunity. We also analyzed another case of ectopic ACTH syndrome to prove this hypothesis. RESULTS: The LCNEC tissue revealed an ectopic ACTH expression and lymphocyte infiltration. Interestingly, autoantibody against the proopiomelanocortin (POMC) protein was detected in the peripheral blood. Although, patient's serum did not show any effects on cell viability, proliferation, nor pomc expression in a corticotroph cell line, AtT20 cells, patient's lymphocytes in the peripheral blood specifically reacted toward POMC protein, indicating a presence of cytotoxic T lymphocytes (CTLs). In addition, the analysis of another case of ectopic ACTH syndrome showed lymphocyte infiltration not only in the metastatic liver tumors but also in the pituitary. Moreover, most CD8-positive cells resided adjacent to corticotrophs. CONCLUSIONS: These data indicate that the ectopic ACTH expression in the tumor evoked the autoimmunity to corticotrophs and caused IAD as a form of paraneoplastic syndrome.2018年10月, Pituitary, 21(5) (5), 480 - 489, 英語, 国際誌研究論文(学術雑誌)
- (株)日本臨床社, 2018年09月, 日本臨床, 別冊(内分泌症候群I) (内分泌症候群I), 234 - 238, 日本語
- BACKGROUND: Most of circulating IGF-I is derived from the liver and circulating IGF-I levels are decreased in several pathological conditions, such as liver cirrhosis, uncontrolled diabetes, renal failure, and malnutrition. However, it has not fully been elucidated which factors modify IGF-I level in a physiological condition. OBJECTIVE: To identify the factors which are associated with circulating IGF-I levels. DESIGN: Cross-sectional study. METHODS: This study included 428 subjects who undertook health check-up. Subjects diagnosed with non-alcoholic fatty liver disease (NAFLD) by ultrasonography were analyzed separately. Univariate and multivariate regression analyses were conducted to identify the factors associated with circulating IGF-I levels. RESULTS: Regression analyses revealed that serum albumin levels, total-bilirubin levels, calcium levels, and HOMA-IR were positively correlated with IGF-I levels. Serum transaminase levels and habitual drinking (ethanol intake >20 g/day) were negatively correlated with serum IGF-I levels. Although serum IGF-I standard deviation scores (SDS) in subjects with and without NAFLD were comparable, after adjusting confounding factors clarified by multivariate regression analysis, IGF-I SDS negatively correlated with the presence of NAFLD. CONCLUSION: In this study, we demonstrated that serum bilirubin and calcium levels are correlated with serum IGF-I levels. Although further study is necessary, these data suggest a presence of interaction between GH-IGF-I axis and bilirubin and calcium metabolism.2018年06月, Growth hormone & IGF research : official journal of the Growth Hormone Research Society and the International IGF Research Society, 40, 55 - 60, 英語, 国際誌研究論文(学術雑誌)
- (株)最新医学社, 2018年05月, 最新医学, 73(5) (5), 627 - 632, 日本語
- (有)科学評論社, 2018年03月, 内分泌・糖尿病・代謝内科, 46(3) (3), 200 - 205, 日本語
- Cancer immunotherapy has emerged as treatment of multiple advanced cancer types. Immune checkpoint inhibitors, namely anticytotoxic T-lymphocyte antigen-4 (CTLA-4), antiprogrammed cell death-1 (PD-1), and antiprogrammed cell death-1 ligand 1 (PD-L1) antibodies, have been used for treatment of various cancers. Classified as immune-related adverse events, several endocrinopathies, including hypophysitis, are associated with these agents. Although anti-CTLA-4-induced hypophysitis has been frequently observed, hypophysitis upon use of anti-PD-1 and anti-PD-L1 antibodies is rare. Case 1 is a 65-year-old man presented with a stage IV non-small cell lung cancer (NSCLC) treated with atezolizumab (an anti-PD-L1 antibody) following several inefficacious chemotherapies. After 56 weeks of the treatment, he complained of general malaise and appetite loss, and was diagnosed with adrenal insufficiency. Endocrinological examination revealed isolated adrenocorticotropic hormone (ACTH) deficiency; pituitary magnetic resonance imaging (MRI) showed anterior pituitary atrophy. Hydrocortisone replacement therapy rapidly improved his symptoms and enabled him to continue atezolizumab therapy. Case 2 is a 70-year-old man with a stage IV NSCLC treated with atezolizumab. After 52 weeks of treatment, he was diagnosed with isolated ACTH deficiency. Pituitary MRI revealed no obvious abnormalities in the anterior pituitary. Hydrocortisone replacement therapy was also efficacious. We report two cases of atezolizumab-induced hypophysitis. Both showed isolated ACTH deficiency, suggesting similar clinical characteristics of hypophysitis associated with the use of anti-PD-1 antibodies. These results suggest a caution for the late-onset central adrenal insufficiency associated with hypophysitis in patients treated with anti-PD-L1 antibodies.2018年01月, Journal of the Endocrine Society, 2(1) (1), 91 - 95, 英語, 国際誌
- PURPOSE: Acromegaly is a disease associated with an increased risk for several kinds of neoplasms including colon and thyroid cancer. Although the association between acromegaly and pancreatic neoplasms has not been elucidated, it has recently been reported that GNAS gene mutations were found in 58% of intraductal papillary mucinous neoplasms (IPMNs), which are representative pancreatic cystic lesions, suggesting a link between IPMNs and acromegaly. To assess the prevalence of pancreatic cystic lesions in patients with acromegaly, we performed a retrospective cross-sectional single institute study. METHODS: Thirty consecutive acromegalic patients (20 females and 10 males; mean age, 60.9 ± 11.9 years) who underwent abdominal contrast-enhanced computed tomography or magnetic resonance imaging between 2007 and 2015 at Kobe University Hospital were recruited. We also analyzed the relationship between presence of pancreatic cystic lesions and somatic GNAS mutations in pituitary tumors. RESULTS: Seventeen of 30 (56.7%) patients studied had pancreatic cystic lesions. Nine of 17 patients (52.9%) were diagnosed with IPMNs based on imaging findings. These results suggest that the prevalence of IPMNs may be higher in acromegalic patients in acromegalic patients than historically observed in control patients (up to 13.5%). In patients with pancreatic cystic lesions, the mean patient age was higher and the duration of disease was longer than in those without pancreatic cystic lesions (67.0 ± 2.3 vs. 53.0 ± 2.7 years, p < 0.001, 15.5 ± 2.4 vs. 7.3 ± 2.8 years, p = 0.04). There were no differences in serum growth hormone levels or insulin-like growth factor standard deviation scores between these two groups (21.3 ± 6.4 vs. 23.0 ± 7.4 ng/ml, p = 0.86, 6.6 ± 0.5 vs. 8.0 ± 0.6, p = 0.70). Neither the presence of somatic GNAS mutation in a pituitary tumor nor low signal intensity of the tumor in T2 weighted magnetic resonance imaging was associated with the presence of pancreatic cystic lesions. CONCLUSIONS: These data demonstrate that old or long-suffering patients with acromegaly have a higher prevalence of pancreatic cystic lesions. Moreover, the prevalence of pancreatic cystic lesions may be increased in acromegalic patients.2017年10月, Pituitary, 20(5) (5), 509 - 514, 英語, 国際誌研究論文(学術雑誌)
- Anti-PIT-1 antibody syndrome has recently been reported and characterized by acquired growth hormone (GH), prolactin (PRL), and thyroid-stimulating hormone (TSH) deficiencies associated with autoimmunity to a pituitary specific transcription factor PIT-1, which plays an essential role in GH-, PRL-, and TSH-producing cells. Although circulating anti-PIT-1 antibody and PIT-1-reactive cytotoxic T cells (CTLs) were detected in the patients, the pathophysiology and precise mechanisms for the autoimmunity remain unclarified. During the follow up, thymoma was diagnosed in all 3 cases with anti-PIT-1 antibody syndrome. Immunohistochemical analysis revealed that PIT-1 was strongly expressed in neoplastic cortical thymic epithelial cells. Importantly, after thymectomy, the titer of anti-PIT-1 antibody decreased and reactivity of CTLs toward PIT-1 diminished. These data strongly suggest that the aberrant expression of PIT-1 in the thymoma plays a causal role in the development of this syndrome. Thus, we define that this syndrome is a novel thymoma-associated autoimmune disease.2017年02月, Scientific reports, 7, 43060 - 43060, 英語, 国際誌研究論文(学術雑誌)
- (株)ライフ・サイエンス, 2017年02月, Progress in Medicine, 37(2) (2), 292 - 293, 日本語
- Pituitary-specific transcription factor 1 (PIT-1; POU domain, class 1, transcription factor 1 (POU1F1)) is an essential transcription factor for the differentiation of somatotrophs, lactotrophs, and thyrotrophs, and for the expression of growth hormone (GH), prolactin (PRL), and thyroid-stimulating hormone (TSH). Mutations in PIT-1 cause congenital defects in GH and PRL secretion and severe TSH insufficiency. Anti-PIT-1 antibody syndrome, firstly reported in 2011, is characterized by acquired GH, PRL, and TSH deficiencies without PIT-1 mutation and is associated with the presence of the circulating antibody against PIT-1 protein as a marker. Various autoantibodies are detected with multiple endocrine organopathies in this syndrome; therefore, it meets the criteria of autoimmune polyglandular syndrome. Mechanistically, cytotoxic T lymphocytes specifically reacting with PIT-1 protein play an important role in the development of this syndrome.2017年, Frontiers of hormone research, 48, 76 - 83, 英語, 国際誌研究論文(学術雑誌)
- Measuring salivary cortisol is both convenient and non-invasive for patients; however, its usefulness as a marker for monitoring medical therapy has not yet been established. The aim of this study was to assess the utility of multiple salivary cortisol measurements in patients with Cushing's syndrome (CS) during medical therapy. Six patients with CS (three with cortisol-secreting adrenocortical adenoma and three with ACTH-secreting pituitary adenoma) were recruited. Samples for morning serum cortisol, urinary free cortisol (UFC), and multiple salivary cortisol levels were collected before and during metyrapone treatment. The area under the curve (AUC) and mean value (MV) of daily salivary cortisol levels were calculated. In five out of six patients, UFC were normalized; however, multiple salivary cortisol measurements revealed an impaired diurnal cortisol rhythm in these patients. To verify the usefulness of multiple salivary cortisol measurements, we performed a prospective case study of a patient in whom the excess secretion of cortisol was not controlled (UFC 211 μg/day) with 2,250 mg/day in four divided doses of metyrapone. Multiple measurements of salivary cortisol revealed that cortisol levels elevated before the next administration. Accordingly, we shortened the interval by increasing the number of administration from four to five times per day, with a slight increment of daily dose of 2,500 mg. These optimizations resulted in a drastic improvement of diurnal pattern as well as UFC level (101 μg/day). Changes in both the MV and AUC of salivary cortisol levels were more correlated with those in UFC levels (Correlation coefficient 0.75, p = 0.007, and 0.70, p = 0.017) than those in the morning serum cortisol levels (0.42, p = 0.200), indicating that multiple salivary cortisol measurements reflect more precisely the excess secretion of cortisol. Our preliminary data suggest that multiple salivary cortisol measurements can be a useful tool to visualize the diurnal cortisol rhythm and to determine the dose and timing of metyrapone during the treatment in patients with CS.2017年, Frontiers in endocrinology, 8, 375 - 375, 英語, 国際誌研究論文(学術雑誌)
- Genetic and clinical characteristics of Japanese patients with sporadic somatotropinoma.Most of acromegaly is caused by a sporadic somatotropinoma and a couple of novel gene mutations responsible for somatotropinoma have recently been reported. To determine the cause of sporadic somatotropinoma in Japanese patients, we analyzed 61 consecutive Japanese patients with somatotropinoma without apparent family history. Comprehensive genetic analysis revealed that 31 patients harbored guanine nucleotide-binding protein, alpha stimulating (GNAS) mutations (50.8%) and three patients harbored aryl hydrocarbon receptor interacting protein (AIP) mutations (4.9%). No patients had G protein-coupled receptor 101 (GPR101) mutations. The patients in this cohort study were categorized into three groups of AIP, GNAS, and others and compared the clinical characteristics. The AIP group exhibited significantly younger age at diagnosis, larger tumor, and higher nadir GH during oral glucose tolerance test. In all patients with AIP mutation, macro- and invasive tumor was detected and repetitive surgery or postoperative medical therapy was needed. One case showed a refractory response to postoperative somatostatin analogue (SSA) but after the addition of cabergoline as combined therapy, serum IGF-I levels were controlled. The other case showed a modest response to SSA and the switching to cabergoline monotherapy was also effective. These data suggest that although resistance to SSA has been reported in patients with AIP mutations, the response to dopamine agonist (DA) may be retained. In conclusion, the cause of sporadic somatotropinoma in Japanese patients was comparable with the previous reports in Caucasians, patients with AIP mutations showed unique clinical characteristics, and DA may be a therapeutic option for patients with AIP mutations.2016年11月, Endocrine journal, 63(11) (11), 953 - 963, 英語, 国内誌研究論文(学術雑誌)
- Hepatic fibrosis in nonalcoholic steatohepatitis (NASH) and cirrhosis determines patient prognosis; however, effective treatment for fibrosis has not been established. Oxidative stress and inflammation activate hepatic stellate cells (HSCs) and promote fibrosis. In contrast, cellular senescence inhibits HSCs' activity and limits fibrosis. The aim of this study was to explore the effect of IGF-I on NASH and cirrhotic models and to clarify the underlying mechanisms. We demonstrate that IGF-I significantly ameliorated steatosis, inflammation, and fibrosis in a NASH model, methionine-choline-deficient diet-fed db/db mice and ameliorated fibrosis in cirrhotic model, dimethylnitrosamine-treated mice. As the underlying mechanisms, IGF-I improved oxidative stress and mitochondrial function in the liver. In addition, IGF-I receptor was strongly expressed in HSCs and IGF-I induced cellular senescence in HSCs in vitro and in vivo. Furthermore, in mice lacking the key senescence regulator p53, IGF-I did not induce cellular senescence in HSCs or show any effects on fibrosis. Taken together, these results indicate that IGF-I induces senescence of HSCs, inactivates these cells and limits fibrosis in a p53-dependent manner and that IGF-I may be applied to treat NASH and cirrhosis.2016年10月, Scientific reports, 6, 34605 - 34605, 英語, 国際誌研究論文(学術雑誌)
- OBJECTIVE: Although serum insulin like growth factor type 1 (IGF-I) levels are negatively correlated with hemoglobin A1c (HbA1c) in patients with type 1 diabetes, this correlation is controversial in patients with type 2 diabetes mellitus (T2DM) because of the influence of multiple factors including insulin secretion and obesity. The aim of this study was to evaluate the influence of T2DM on serum growth hormone (GH) and IGF-I levels in Japanese patients, who exhibited relatively low BMI compared with white patients in the previous studies. DESIGN: We retrospectively analysed 315 consecutive Japanese hospitalized patients with T2DM. We analysed factors correlated with changes in serum IGF-I levels and those related to diabetes. RESULTS: The median HbA1c was 8.7% (7.4-10.2) and the median body mass index (BMI) was 26.2kg/m(2) (23.1-29.7), which was relatively low compared with the previous studies. Overall, no correlations was found between serum GH or IGF-I levels and fasting plasma glucose (FPG) or HbA1c; however, when stratified by FPG and HbA1c levels, serum IGF-I levels were significantly lower in patients with FPG≥200mg/dL than in those with FPG<200mg/dL (p=0.039). In addition, serum IGF-I levels were significantly lower in patients with HbA1c≥12% than in those with HbA1c<12% (p=0.046). Multiple linear regression analysis revealed a positive correlation between fasting C-peptide levels and serum IGF-I levels (p=0.040), whereas no correlations was found for BMI, duration of T2DM, FPG levels, or HbA1c. Moreover, patients with improved HbA1c levels during the follow up period showed a significant increase in serum IGF-I levels. CONCLUSIONS: Serum IGF-I levels were significantly decreased in Japanese patients with uncontrolled T2DM, and impaired insulin secretion may be a mechanism underlying this effect. When diagnosing acromegaly in patients with uncontrolled diabetes, these factors should be taken into account.2016年08月, Growth hormone & IGF research : official journal of the Growth Hormone Research Society and the International IGF Research Society, 29, 4 - 10, 英語, 国際誌研究論文(学術雑誌)
- 医歯薬出版(株), 2016年06月, 医学のあゆみ, 257(12) (12), 1256 - 1258, 日本語
- Objective Various organs are known to be affected by the comorbidities of acromegaly. However, the involvement of renal structural comorbidities, such as cysts, has so far remained largely unknown. In this single-center study, we aimed to determine the prevalence and factors associated with simple renal cysts in Japanese patients with acromegaly. Methods A total of 71 consecutive patients with acromegaly were analyzed, who all underwent abdominal ultrasonography at diagnosis between 1986 and 2012 at Kobe University Hospital. Results Of these 71 patients, 23 (32.4%) exhibited simple renal cysts. Acromegalic patients with renal cysts tended to be significantly older, had a higher prevalence of smoking- and higher nadir growth hormone (GH) levels during the oral glucose tolerance test (OGTT) than did those without renal cysts. A multivariate logistic regression analysis showed age, smoking, and nadir GH to be independent factors associated with renal cysts. Interestingly, the number of renal cysts positively correlated with both the basal GH levels and nadir GH levels during OGTT (r=0.66, p<0.05 and r=0.70, p<0.05, respectively). In addition, the mean diameter of renal cysts positively correlated with the systolic blood pressure (r=0.84, p<0.005). Conclusion This is the first report to show the prevalence of simple renal cysts in patients with acromegaly. Elevated nadir GH levels during OGTT were found to be associated with an increased risk of simple renal cysts. Therefore, an excessive secretion of GH may be related to the development of renal cysts.2016年, Internal medicine (Tokyo, Japan), 55(13) (13), 1685 - 90, 英語, 国内誌研究論文(学術雑誌)
- PURPOSE: To develop a Japanese version of the acromegaly quality of life (QoL) questionnaire (AcroQoL) and investigate the factors associated with impaired QoL in patients with acromegaly. METHODS: We developed a Japanese version of the AcroQoL by a forward-backward method and evaluated QoL in 38 patients with acromegaly who had been followed up at an outpatient clinic at Kobe University Hospital. Its reliability was examined with Cronbach's alpha and item-total correlations. Second examination was performed for concurrent validity by assessment of correlations with the Short Form-36 (SF-36) and longitudinal analysis of the AcroQoL in 25 patients. RESULTS: Cronbach's alpha and item-total correlations showed a range of 0.76-0.93 and 0.20-0.84, respectively, and significant correlations were found between the AcroQoL and the SF-36. Younger age and a history of radiotherapy were associated with worse total score by the multivariate linear regression analysis (p = 0.020 and p = 0.042, respectively). Intriguingly, in the biochemically-controlled group after the exclusion of patients who received radiotherapy, patients who underwent surgery alone exhibited a higher psychological (75.0 vs. 65.7 %, p = 0.036) and appearance (64.3 vs. 53.6 %, p = 0.036) score than those who are treating with pharmaceutical therapy. CONCLUSIONS: The reliability of the Japanese version of the AcroQoL was satisfactory. Younger age and a history of radiotherapy were associated with lower QoL in patients with acromegaly. In biochemically-controlled acromegaly, patients who underwent surgery alone exhibited better QoL than those under pharmaceutical therapy.2015年12月, Pituitary, 18(6) (6), 876 - 83, 英語, 国際誌研究論文(学術雑誌)
- INTRODUCTION: Immunoglobulin (Ig) G4-related hypophysitis is an emerging clinical entity, which is characterized by an elevated serum IgG4 concentration and infiltration of IgG4-positive plasma cells in the pituitary. Although some criteria for its diagnosis have been proposed, they have not been fully established. In particular, differential diagnosis from secondary chronic inflammation including granulomatosis with polyangiitis (GPA) is difficult in some cases. We describe central diabetes insipidus with pituitary swelling exhibiting infiltration of IgG4-positive cells. PATIENT: A 43-year-old woman in the remission stage of GPA presented with sudden-onset polyuria and polydipsia. Pituitary magnetic resonance imaging revealed swelling of the anterior and posterior pituitary and stalk, with heterogeneous gadolinium enhancement and disappearance of the high signal intensity of the posterior pituitary. Evaluation of biochemical markers for GPA suggested that the disease activity was well-controlled. Endocrinological examination revealed the presence of central diabetes insipidus and growth hormone deficiency. Pituitary biopsy specimen showed IgG4-positive cells, with a 43% IgG4(+)/IgG(+) ratio, which met the criteria for IgG4-related hypophysitis. However, substantial infiltration of polymorphonuclear neutrophils with giant cells was also noted, resulting in a final diagnosis of pituitary involvement of GPA. CONCLUSION: These results suggest that pituitary involvement of GPA should be taken into account for the differential diagnosis of IgG4-related hypophysitis.2015年10月, Pituitary, 18(5) (5), 722 - 30, 英語, 国際誌研究論文(学術雑誌)
- PURPOSE: Colorectal neoplasms are well known to be a complication in cases of acromegaly; however, data on the prevalence of colorectal neoplasms in Asian patients with acromegaly are limited. Further, the factors associated with colorectal neoplasms in cases of acromegaly are controversial. Therefore, we aimed to clarify the prevalence of and factors associated with colorectal neoplasms in Japanese patients with acromegaly in a single center. METHODS: We analyzed consecutive 57 patients who had undergone full-length colonoscopy at the time of diagnosis at Kobe University Hospital between 1986 and 2012. RESULTS: Of the 57 patients, 22 (38.6%), 18 (31.6%) and 3 (5.3%) patients were diagnosed with hyperplastic polyps, adenomas, and adenocarcinomas, respectively and the prevalence was significantly higher than in a historical control group, Chinese patients with irritable bowel syndrome (The odds ratio was 4.0, 8.7, and 17.5, respectively). The prevalence of adenocarcinomas was also significantly higher in these patients than in the general Japanese population (odds ratio 14.5). Patients with acromegaly who had colorectal neoplasms had longer disease duration than those without colorectal neoplasms. Of note, the area under the growth hormone (GH) concentration-time curve (GH AUC) during the oral glucose tolerance test was significantly higher in patients with adenocarcinomas than in those with no colonic lesion or those with hyperplastic polyps. CONCLUSION: Japanese patients with acromegaly exhibited an increased risk of colorectal neoplasms, especially colorectal adenocarcinomas. An increased GH AUC was associated with an increased risk for colon adenocarcinomas in patients with acromegaly.2015年06月, Pituitary, 18(3) (3), 343 - 51, 英語, 国際誌研究論文(学術雑誌)
- [A Novel Clinical Entity "Anti-PIT-1 Antibody Syndrome"--Autoimmunity against a Transcription Factor].Autoimmunity against the pituitary has been observed in patients with hypophysitis. Although various autoantibodies against pituitary proteins have been reported, it is known that most of them are markers for the disease. Recently, a unique autoantibody against pituitary transcription factor PIT-1 (POU1F1) was detected in patients with an acquired combined pituitary hormone deficiency characterized by a specific defect in growth hormone (GH), prolactin (PRL), and thyroid-stimulating hormone (TSH). The antibody has been suggested to be involved in the pathogenesis because PIT-1 is an essential transcription factor that plays a role in the differentiation and maintenance of GH-, PRL-, and TSH-producing cells and mutations in the PIT-1 gene, resulting in a specific defect in these hormones. This syndrome was found to be a novel clinical entity; therefore, it was named 'anti-PIT-1 antibody syndrome'. Circulating anti-PIT-1 antibody and various autoantibodies were detected with multiple endocrine organopathy, meeting the definition of autoimmune polyglandular syndrome. Mechanistically, cytotoxic T lymphocytes that specifically react with PIT-1 protein play an important role in the development of this syndrome. In this review, we discuss the clinical aspects and pathophysiology of anti-PIT-1 antibody syndrome.2015年04月, Rinsho byori. The Japanese journal of clinical pathology, 63(4) (4), 491 - 7, 日本語, 国内誌研究論文(学術雑誌)
- Anti-PIT-1 antibody syndrome; a novel clinical entity leading to hypopituitarism.Various hypothalamic-pituitary diseases cause hypopituitarism. Inflammation related to autoimmunity also causes hypopituitarism. Hypophysitis is a representative disease caused by autoimmunity. Generally, anterior pituitary hormones are non-specifically impaired in this condition, but specific hormone defects have been reported in some cases. Anti-PIT-1 (pituitary-specific transcription factor 1) antibody syndrome is a novel clinical entity that presents an acquired combined pituitary hormone deficiency characterized by a specific defect in growth hormone, prolactin, and thyroid-stimulating hormone. Circulating anti-PIT-1 antibody along with various autoantibodies are detected with multiple endocrine organopathy, meeting the definition of autoimmune polyglandular syndrome. Mechanistically, cytotoxic T lymphocytes that specifically react with PIT-1 protein play an important role in the development of this syndrome.2015年03月, Pediatric endocrinology reviews : PER, 12(3) (3), 290 - 6, 英語, 国際誌研究論文(学術雑誌)
- The prevalence of acromegaly is estimated to be 8-24/100,000, but several recent studies suggest it is underestimated. In particular, acromegaly is considered more prevalent in patients with type 2 diabetes mellitus (T2DM) than in the normal population. This study aimed to evaluate the prevalence of acromegaly in hospitalized patients with T2DM. A total of 327 hospitalized patients with T2DM were recruited as subjects. If serum insulin-like growth factor 1 (IGF-1) levels were found to be elevated, random GH level was measured or oral glucose tolerance test (OGTT) was performed. Five patients with elevated serum IGF-1 levels and random GH level or inadequate suppression of GH in the OGTT underwent pituitary magnetic resonance imaging. Of those patients, pituitary adenoma was detected in 2 patients. These 2 patients were diagnosed with acromegaly, as they also exhibited mild acromegalic features. Intriguingly, both these patients exhibited severe macroangiopathy and an absence of microangiopathy. The prevalence of acromegaly in the hospitalized patients with T2DM in this study was therefore 0.6%, suggesting a higher prevalence than that predicted. Although a large-scale prospective study is required to clarify the precise prevalence of acromegaly in hospitalized patients with T2DM, the present study shows that it is useful to screen hospitalized patients with T2DM for acromegaly by measuring their serum IGF-1 level.2015年, Endocrine journal, 62(1) (1), 53 - 9, 英語, 国内誌研究論文(学術雑誌)
- OBJECTIVE: Patients with acromegaly exhibit reduced life expectancy and increased prevalence of age-related diseases, such as diabetes, hypertension, and cardiovascular disease. However, the underlying mechanism has not been fully elucidated. Telomere shortening is reportedly associated with reduced life expectancy and increased prevalence of these age-related diseases. METHODS: We measured telomere length in patients with acromegaly using quantitative PCR method. The effect of GH and IGF-I on telomere length and cellular senescence was examined in human skin fibroblasts. RESULTS: Patients with acromegaly exhibited shorter telomere length than age-, sex-, smoking-, and diabetes-matched control patients with non-functioning pituitary adenoma (0.62 ± 0.23 vs. 0.75 ± 0.35, respectively, P = 0.047). In addition, telomere length in acromegaly was negatively correlated with the disease duration (R2 = 0.210, P = 0.003). In vitro analysis revealed that not GH but IGF-I induced telomere shortening in human skin fibroblasts. Furthermore, IGF-I-treated cells showed increased senescence-associated β-galactosidase activity and expression of p53 and p21 protein. IGF-I-treated cells reached the Hayflick limit earlier than GH- or vehicle-treated cells, indicating that IGF-I induces cellular senescence. CONCLUSION: Shortened telomeres in acromegaly and cellular senescence induced by IGF-I can explain, in part, the underlying mechanisms by which acromegaly exhibits an increased morbidity and mortality in association with the excess secretion of IGF-I.2015年, PloS one, 10(10) (10), e0140189, 英語, 国際誌研究論文(学術雑誌)
- OBJECTIVE: Nonalcoholic fatty liver disease (NAFLD) and nonalcoholic steatohepatitis (NASH) are frequently observed in patients with adult growth hormone deficiency (AGHD) and short-term GH replacement therapy (GHRT) has reportedly been efficacious in NAFLD and NASH. The aim of this study was to investigate whether long-term GHRT is an effective treatment for the hepatic comorbidities in AGHD. DESIGN: This is a retrospective observational study. We recruited 54 consecutive hypopituitary patients with AGHD. Among them, 31 patients who had received GHRT for more than 24 months were compared with 19 age- and sex-matched patients without GHRT. We also analyzed the long term effect of GHRT on 14 patients diagnosed with NASH by liver biopsy. In addition, we subdivided the GHRT group into GH-responder and GH-non-responder groups and analyzed the factors associated with the efficacy of the treatment. RESULTS: For a period of 24 months, the significant reduction of serum liver enzyme levels and a fibrotic marker was observed in patients receiving GHRT compared with the control group. Furthermore, GHRT also improved liver enzyme levels in AGHD patients with NASH. The GH-non-responder group showed a higher proportion of patients who gained weight during the study period. CONCLUSIONS: These results indicate that GHRT is efficacious for improving serum liver enzyme levels for at least 24 months in patients with AGHD. To optimize this effect, it is important to avoid body weight gain during the treatment.2014年10月, Growth hormone & IGF research : official journal of the Growth Hormone Research Society and the International IGF Research Society, 24(5) (5), 174 - 9, 英語, 国際誌研究論文(学術雑誌)
- CONTEXT: Anti-pituitary-specific transcriptional factor 1 (PIT-1) antibody syndrome is characterized by acquired growth hormone (GH), prolactin (PRL), and thyroid-stimulating hormone (TSH) deficiencies associated with circulating anti-PIT-1 antibodies. Although autoimmunity to PIT-1 has been suggested as a pathogenesis, the precise mechanism of the syndrome remains unclarified. OBJECTIVE: To elucidate the involvement of antibody- or cell-mediated immunity in anti-PIT-1 antibody syndrome. MATERIALS AND METHODS: To investigate a direct effect of anti-PIT-1 antibody on pituitary cells, cell proliferation, and cytotoxicity detection assays were performed using patient serum. Enzyme-linked immunospot (ELISpot) assay was performed to evaluate the involvement of PIT-1-reactive cytotoxic T lymphocytes (CTLs). An immunohistochemical analysis using anti-CD4 or anti-CD8 antibody was performed to examine tissue infiltration by CTLs. RESULTS: Patient serum did not exhibit any inhibitory effect on cell proliferation and secretion of GH and PRL in GH3 cells. In addition, complement-dependent cytotoxicity was not detected in patient serum on GH3 cells or primary pituitary cells. The ELISpot assay revealed the presence of CTLs that specifically reacted to the recombinant PIT-1 protein in the patient's peripheral lymphocytes. CD8(+) cell infiltrations, which is the characteristic of CTLs, were observed in the pituitary gland, adrenal gland, stomach, thyroid gland, liver, and pancreas of the patient with anti-PIT-1 antibody syndrome. CONCLUSIONS: These results suggest that the anti-PIT-1 antibody is not a cause but a marker of anti-PIT-1 antibody syndrome, in which CTLs play a pivotal role in the pathogenesis.2014年09月, The Journal of clinical endocrinology and metabolism, 99(9) (9), E1744-9, 英語, 国際誌研究論文(学術雑誌)
- 2014年06月, ENDOCRINE REVIEWS, 35(3) (3), 英語ErbB Mediate ACTH Suppression By Canertinib in Human Pituitary Corticotroph Adenoma Cells[査読有り]
- 2014年06月, ENDOCRINE REVIEWS, 35(3) (3), 英語ErbB Mediate ACTH Suppression By Canertinib in Human Pituitary Corticotroph Adenoma Cells[査読有り]
- 2014年06月, ENDOCRINE REVIEWS, 35(3) (3), 英語IGF-I Ameliorates Hepatic Fibrosis in Mouse Models of Nonalcoholic Steatohepatitis and Cirrhosis By Inhibiting the Hepatic Stellate Cell Activity[査読有り]
- 2014年06月, ENDOCRINE REVIEWS, 35(3) (3)Acromegaly Is Associated with a Shortened Telomere Length[査読有り]
- 2014年06月, ENDOCRINE REVIEWS, 35(3) (3)The Increased Area Under the Growth Hormone Concentration-Time Curve during Oral Glucose Tolerance Test Is Associated with Colorectal Adenocarcinoma in Acromegaly[査読有り]
- 2014年06月, ENDOCRINE REVIEWS, 35(3) (3)The Characteristics of IgG4-Related Hypophysitis; A Comparison with Autoimmune Hypophysitis[査読有り]
- 2014年06月, ENDOCRINE REVIEWS, 35(3) (3)A Case of Androgen- and Fibroblast Growth Factor 23-Producing Ovarian Tumor[査読有り]
- OBJECTIVE: The prevalence and clinical characteristics of IgG4-related hypophysitis remain unclear due to the limited number of case reports. Therefore, in this study, we screened consecutive outpatients with hypopituitarism and/or diabetes insipidus (DI) to estimate its prevalence. METHODS: A total of 170 consecutive outpatients with hypopituitarism and/or central DI were screened at Kobe University Hospital for detecting IgG4-related hypophysitis by pituitary magnetic resonance imaging, measuring serum IgG4 concentrations, assessing the involvement of other organs, and carrying out an immunohistochemical analysis to detect IgG4-positive cell infiltration. RESULTS: Among the screened cases, 116 cases were excluded due to diagnosis of other causes such as tumors and congenital abnormalities. Additionally, 22 cases with isolated ACTH deficiency were analyzed and were found not to meet the criteria of IgG4-related hypophysitis. The remaining 32 cases were screened and seven were diagnosed with IgG4-related hypophysitis, of which three cases were diagnosed by analyzing pituitary specimens. IgG4-related hypophysitis was detected in 30% (seven of 23 patients) of hypophysitis cases and 4% of all hypopituitarism/DI cases. The mean age at the onset of IgG4-related hypophysitis was 61.8±8.8 years, and the serum IgG4 concentration was 191.1±78.3 mg/dl (normal values 5-105 mg/dl and values in IgG4-related disease (RD) ≥135 mg/dl). Pituitary gland and/or stalk swelling was observed in six patients, and an empty sella was observed in one patient. Multiple co-existing organ involvement was observed in four of the seven patients prior to the onset of IgG4-related hypophysitis. CONCLUSION: These data suggest that the prevalence of IgG4-related hypophysitis has been underestimated. We should also consider the possibility of the development of hypopituitarism/DI caused by IgG4-related hypophysitis during the clinical course of other IgG4-RDs.2014年02月, European journal of endocrinology, 170(2) (2), 161 - 72, 英語, 国際誌研究論文(学術雑誌)
- A missense single-nucleotide polymorphism in the sialic acid acetylesterase (SIAE) gene is associated with anti-PIT-1 antibody syndrome.A novel clinical entity related to autoimmune polygladular syndrome (APS) termed "anti-PIT-1 antibody syndrome" is characterized by a presence of circulating autoantibody against the pituitary-specific transcriptional factor-1 (PIT-1) with acquired specific defect in GH, PRL, and TSH. Although autoimmunity to PIT-1 has been suggested, the underlying mechanisms remain to be elucidated. Sialic acid acetylesterase (SIAE) plays a crucial role in regulating the threshold of autoantibody production of B-cells and the defective variants of SIAE are associated with an increased risk of various autoimmune diseases such as type 1 diabetes (T1DM). To explore the link between anti-PIT-1 antibody syndrome and SIAE, we analyzed SIAE gene in 3 patients with anti-PIT-1 antibody syndrome and 200 healthy control subjects, and compared the prevalence of single nucleotide polymorphisms. Intriguingly, we found A467V SIAE variants (c.1400C>T, rs7941523) in a heterozygous state in all the patients with anti-PIT-1 antibody syndrome, while we detected in 6 % of control subjects, in which the prevalence was significantly increased in the patients (P<0.0005). Considering the physiological function of SIAE and the clinical features of anti-PIT-1 antibody syndrome, present data imply a novel aspect of the pathogenesis in this disease.2014年, Endocrine journal, 61(6) (6), 641 - 4, 英語, 国内誌研究論文(学術雑誌)
- D-dimer as a significant marker of deep vein thrombosis in patients with subclinical or overt Cushing's syndrome.Venous thromboembolism (VTE) is frequently associated with hypercortisolemia. This retrospective single-center study aimed to clarify the significance of plasma D-dimer levels for VTE screening in patients with subclinical or overt Cushing's syndrome (soCS). A total of 72 consecutive treatment-naïve patients with soCS diagnosed at Kobe University Hospital between 2002 and 2014 were enrolled. Patients with both lower extremity ultrasound and D-dimer measurement data (n = 19) were recruited in study 1 and divided into 2 groups, a deep vein thrombosis (DVT) (-) group (n = 12) and DVT (+) group (n = 7) for a comparison of the associated factors. The age and D-dimer levels were higher in the DVT (+) group than in the DVT (-) group (p = 0.04 and 0.02, respectively). A receiver operating characteristic analysis found that D-dimer level ≥2.6 μg/mL correlated with the presence of DVT (sensitivity, 100%; specificity, 91.7%). Next, patients with D-dimer measurement data (n = 36) were recruited in study 2 and divided into 2 groups according to D-dimer level: D-dimer (-), <1 μg/mL group (n = 23) and D-dimer (+), ≥1 μg/mL group (n = 13); the groups were compared with respect to various VTE-related risk factors. A logistic regression analysis revealed that elevated cortisol level after low-dose dexamethasone suppression was a significant risk factor for D-dimer elevation (OR = 1.21, p = 0.02). In conclusion, these data demonstrate that a D-dimer level ≥2.6 μg/mL is an indicator of DVT in treatment naïve patients with soCS and suggests that relatively high autonomous cortisol secretion may be associated with thrombus formation.2014年, Endocrine journal, 61(10) (10), 1003 - 10, 英語, 国内誌研究論文(学術雑誌)
- Adaptation under fasting conditions is critical for survival in animals. Sirtuin 1 (SIRT1), a protein deacetylase, plays an essential role in adaptive metabolic and endocrine responses under fasting conditions by modifying the acetylation status of various proteins. Fasting induces growth hormone (GH) resistance in the liver, leading to decreased serum insulin-like growth factor-I (IGF-I) levels as an endocrine adaptation for malnutrition; however, the underlying mechanisms of this action remain to be fully elucidated. Here we report that in vivo knockdown of SIRT1 in the liver restored the fasting-induced decrease in serum IGF-I levels and enhanced the GH-dependent increase in IGF-I levels, indicating that SIRT1 negatively regulates GH-dependent IGF-I production in the liver. In vitro analysis using hepatocytes demonstrated that SIRT1 suppresses GH-dependent IGF-I expression, accompanied by decreased tyrosine phosphorylation on signal transducer and activator of transcription (STAT) 5. GST pull-down assays revealed that SIRT1 interacts directly with STAT5. When the lysine residues adjacent to the SH2 domain of STAT5 were mutated, STAT5 acetylation decreased concomitant with a decrease in its transcriptional activity. Knockdown of SIRT1 enhanced the acetylation and GH-induced tyrosine phosphorylation of STAT5, as well as the GH-induced interaction of the GH receptor with STAT5. These data indicate that SIRT1 negatively regulates GH-induced STAT5 phosphorylation and IGF-I production via deacetylation of STAT5 in the liver. In addition, our findings explain the underlying mechanisms of GH resistance under fasting conditions, which is a known element of endocrine adaptation during fasting.2013年09月, Proceedings of the National Academy of Sciences of the United States of America, 110(37) (37), 14948 - 53, 英語, 国際誌研究論文(学術雑誌)
- 2013年, Journal of the Japan Diabetes Society, 56(3) (3)研究論文(学術雑誌)
- (一財)甲南病院, 2011年04月, 甲南病院医学雑誌, 28, 10 - 13, 日本語粟粒結核を発症しARDSを呈したが救命し得た透析患者の一例
- Severe hypophosphatemic osteomalacia with Fanconi syndrome, renal tubular acidosis, vitamin D deficiency and primary biliary cirrhosis.A 49-year-old woman was admitted to our hospital for back pain with marked thoracic and extremity deformities leading to bed-rest for three years. She was diagnosed with hypophosphatemic osteomalacia based on her symptoms, X-ray and bone scintigram, high serum alkaline phosphatase level, and low serum levels of both phosphorus and 1,25 dihydroxyvitamin D(3) with inhibition of phosphorus reabsorption. Fanconi syndrome with renal tubular acidosis, vitamin D deficiency and primary biliary cirrhosis were related to the pathogenesis of osteomalacia in this case. Several causal diseases may be concomitantly responsible for acceleration of the severity of osteomalacia in this patient.2009年, Internal medicine (Tokyo, Japan), 48(5) (5), 353 - 8, 英語, 国内誌研究論文(学術雑誌)
- (一社)日本糖尿病学会, 2024年02月, 糖尿病, 67(2) (2), 84 - 84, 日本語ハイブリッドクローズドループ(HCL)療法下でフルマラソンを完走した1型糖尿病の2例
- (一社)日本糖尿病学会, 2024年02月, 糖尿病, 67(2) (2), 85 - 85, 日本語多職種連携のもとで実施した減量・代謝改善手術4例の経験
- (一社)日本糖尿病学会, 2024年02月, 糖尿病, 67(2) (2), 89 - 89, 日本語緩徐な経過を辿った免疫関連副作用(irAE)による1型様の糖尿病の1例
- (一社)日本糖尿病学会, 2024年02月, 糖尿病, 67(2) (2), 102 - 102, 日本語複数の膵島関連自己抗体が陽性だがprobable判定であった緩徐進行1型糖尿病の1例
- 2024年, ACTH Related Peptides (CD-ROM), 35コルチゾール暴露環境がコルチコトロフ腫瘍における免疫細胞浸潤に与える影響
- 2024年, 間脳・下垂体・副腎系研究会プログラム・抄録集(Web), 35thコルチゾール暴露環境がコルチコトロフ腫瘍における免疫細胞浸潤に与える影響
- 2024年, 日本内分泌学会雑誌, 100(1) (1)Down症候群に合併したACTH単独欠損症の一例
- 2024年, 日本内分泌学会雑誌, 100(1) (1)ACTH産生下垂体腫瘍におけるWW-like領域を含めたUSP8体細胞変異の解析
- 2024年, 日本内分泌学会雑誌, 100(1) (1)GH,PRL完全欠損に至る過程を観察し得た抗PIT-1下垂体炎
- 日本先進糖尿病治療研究会, 2023年11月, 日本先進糖尿病治療研究会雑誌, 17(2) (2), 92 - 92, 日本語SAP療法における基礎インスリン設定量とHLC導入後の基礎インスリン注入量の比較検討
- (一社)日本内分泌学会, 2023年10月, 日本内分泌学会雑誌, 99(2) (2), 561 - 561, 日本語Bilateral Suppressionを呈したアルドステロン産生腺腫の一例
- (一社)日本内分泌学会, 2023年10月, 日本内分泌学会雑誌, 99(2) (2), 561 - 561, 日本語家族性PBMAHを呈したARMC5_p.R173*ヘテロ接合型の1例
- (一社)日本内分泌学会, 2023年10月, 日本内分泌学会雑誌, 99(2) (2), 569 - 569, 日本語ラトケ嚢胞における染色マーカーの有用性と臨床像の関連
- (一社)日本内分泌学会, 2023年10月, 日本内分泌学会雑誌, 99(2) (2), 569 - 569, 日本語偽性Cushing症候群から発見に至ったNR3C1新規変異の一例
- (一社)日本内分泌学会, 2023年10月, 日本内分泌学会雑誌, 99(2) (2), 581 - 581, 日本語メチラポン漸増時にPCP増悪を認めたクッシング病疑いの一例
- (一社)日本内分泌学会, 2023年10月, 日本内分泌学会雑誌, 99(2) (2), 587 - 587, 日本語74歳で診断に至ったSCS合併Sheehan症候群の一例
- (一社)日本内分泌学会, 2023年10月, 日本内分泌学会雑誌, 99(2) (2), 590 - 590, 日本語当院におけるAGHDに対するGHRTの長期効果および安全性の検討
- (一社)日本内分泌学会, 2023年10月, 日本内分泌学会雑誌, 99(2) (2), 608 - 608, 日本語染色体、薬剤、環境の複合的な寄与が考えられた骨粗鬆症の一例
- (一社)日本内分泌学会, 2023年10月, 日本内分泌学会雑誌, 99(2) (2), 622 - 622, 日本語クッシング症候群におけるメチラポン単回投与への反応性の検討
- (一社)日本内分泌学会, 2023年05月, 日本内分泌学会雑誌, 99(1) (1), 295 - 295, 日本語免疫チェックポイント阻害薬が惹起した腫瘍随伴性ACTH単独欠損症
- (一社)日本内分泌学会, 2023年05月, 日本内分泌学会雑誌, 99(1) (1), 296 - 296, 日本語ゲル濾過分析でACTHの性状を確認し得た異所性ACTH産生腫瘍の一例
- (一社)日本内分泌学会, 2023年05月, 日本内分泌学会雑誌, 99(1) (1), 301 - 301, 日本語血中に大分子ACTH分泌を認めたコルチゾール産生副腎腺腫の一例
- (一社)日本内分泌学会, 2023年05月, 日本内分泌学会雑誌, 99(1) (1), 311 - 311, 日本語抗PIT-1下垂体炎新規2例を加えた9症例の臨床的特徴
- (一社)日本内分泌学会, 2023年05月, 日本内分泌学会雑誌, 99(1) (1), 332 - 332, 日本語ラトケ嚢胞の病理学的診断におけるKRT8の有用性
- (一社)日本内分泌学会, 2023年05月, 日本内分泌学会雑誌, 99(1) (1), 336 - 336, 日本語PPGLの周術期におけるメチロシン併用に関する検討
- (一社)日本内分泌学会, 2023年05月, 日本内分泌学会雑誌, 99(Suppl.Update) (Suppl.Update), 29 - 31, 日本語
- (一社)日本内分泌学会, 2023年05月, 日本内分泌学会雑誌, 99(Suppl.Update) (Suppl.Update), 51 - 54, 日本語
- (一社)日本糖尿病学会, 2023年04月, 糖尿病, 66(4) (4), 292 - 292, 日本語GAD抗体,IA-2抗体重複陽性であった緩徐進行1型糖尿病の1例
- (一社)日本糖尿病学会, 2023年04月, 糖尿病, 66(4) (4), 307 - 307, 日本語残存インスリン時間の調整が低血糖減少に有効であったHCL加療中1型糖尿病の1例
- (一社)日本内分泌学会, 2023年03月, 日本内分泌学会雑誌, 98(5) (5), 1624 - 1624, 日本語
- (一社)日本内分泌学会, 2023年02月, 日本内分泌学会雑誌, 98(4) (4), 1035 - 1035, 日本語
- (一社)日本内分泌学会, 2023年02月, 日本内分泌学会雑誌, 98(4) (4), 1035 - 1035, 日本語
- 2023年, 日本神経内分泌学会学術集会プログラム・抄録集, 49th偽性Cushing症候群を契機に同定に至ったNR3C1新規変異の一例
- The Endocrine Society, 2022年11月01日, Journal of the Endocrine Society, 6(Supplement{\_}1) (Supplement{\_}1), A499 - A500
- (一社)日本内分泌学会, 2022年10月, 日本内分泌学会雑誌, 98(2) (2), 552 - 552, 日本語骨粗鬆症を契機に診断に至ったLoeys-Dietz症候群の一例
- (一社)日本内分泌学会, 2022年10月, 日本内分泌学会雑誌, 98(2) (2), 567 - 567, 日本語局在診断に難渋するACTH依存性Cushing症候群の1例
- (一社)日本内分泌学会, 2022年10月, 日本内分泌学会雑誌, 98(2) (2), 575 - 575, 日本語セレン欠乏症により,肝障害と甲状腺機能異常を来した一例
- (一社)日本内分泌学会, 2022年10月, 日本内分泌学会雑誌, 98(2) (2), 598 - 598, 日本語嚢胞形成を伴う褐色細胞腫4例の嚢胞内カテコラミン分画の検討
- (一社)日本内分泌学会, 2022年10月, 日本内分泌学会雑誌, 98(2) (2), 605 - 605, 日本語Cushing症候群患者が認識する特異的症候と医師の診断との乖離
- (一社)日本内分泌学会, 2022年10月, 日本内分泌学会雑誌, 98(2) (2), 552 - 552, 日本語骨粗鬆症を契機に診断に至ったLoeys-Dietz症候群の一例
- (一社)日本内分泌学会, 2022年10月, 日本内分泌学会雑誌, 98(2) (2), 567 - 567, 日本語局在診断に難渋するACTH依存性Cushing症候群の1例
- (一社)日本内分泌学会, 2022年10月, 日本内分泌学会雑誌, 98(2) (2), 575 - 575, 日本語セレン欠乏症により,肝障害と甲状腺機能異常を来した一例
- (一社)日本内分泌学会, 2022年10月, 日本内分泌学会雑誌, 98(2) (2), 598 - 598, 日本語嚢胞形成を伴う褐色細胞腫4例の嚢胞内カテコラミン分画の検討
- (一社)日本内分泌学会, 2022年10月, 日本内分泌学会雑誌, 98(2) (2), 605 - 605, 日本語Cushing症候群患者が認識する特異的症候と医師の診断との乖離
- (一社)日本内分泌学会, 2022年08月, 日本内分泌学会雑誌, 98(Suppl.HPT) (Suppl.HPT), 34 - 37, 日本語
- (一社)日本糖尿病学会, 2022年05月, 糖尿病, 65(5) (5), 256 - 256, 日本語肺炎治療中に急激に発症し短期間で改善したSLE併発B型インスリン抵抗症の1例
- (一社)日本糖尿病学会, 2022年05月, 糖尿病, 65(5) (5), 250 - 250, 日本語ニボルマブの初回投与から1988日後に劇症1型糖尿病様の糖尿病を発症した1例
- (一社)日本糖尿病学会, 2022年05月, 糖尿病, 65(5) (5), 252 - 252, 日本語インスリン抗体の性質変化に伴いインスリン注射回数の変更を要した1型糖尿病の1例
- (一社)日本糖尿病学会, 2022年04月, 糖尿病, 65(Suppl.1) (Suppl.1), S - 148, 日本語術前の血清コルチゾール濃度は高度肥満男性における腹腔鏡下スリーブ状胃切除術後の減量効果を予測する因子である
- (一社)日本糖尿病学会, 2022年04月, 糖尿病, 65(Suppl.1) (Suppl.1), S - 169, 日本語免疫チェックポイント阻害薬投与後に発症した1型糖尿病様の糖尿病の特徴と膵臓MRI所見との関連についての検討
- (一社)日本糖尿病学会, 2022年04月, 糖尿病, 65(Suppl.1) (Suppl.1), S - 177, 日本語SGLT2阻害薬投与後のHb増加に伴うGA/HbA1c比への影響に関する検討
- (一社)日本糖尿病学会, 2022年04月, 糖尿病, 65(Suppl.1) (Suppl.1), S - 199, 日本語肥満症における11の健康障害と長期的な体重変化との関連の検討
- (一社)日本糖尿病学会, 2022年04月, 糖尿病, 65(Suppl.1) (Suppl.1), S - 308, 日本語肥満症患者における食行動質問表の各因子スコアと減量効果予測の検討
- (一社)日本糖尿病学会, 2022年04月, 糖尿病, 65(Suppl.1) (Suppl.1), S - 308, 日本語肥満症患者に対する術前減量サポートの効果と周術期合併症に関する検討
- (一社)日本内分泌学会, 2022年04月, 日本内分泌学会雑誌, 98(1) (1), 370 - 370, 日本語ダンピング症候群による低血糖のため診断に難渋したインスリノーマの一例
- (一社)日本糖尿病学会, 2022年04月, 糖尿病, 65(Suppl.1) (Suppl.1), S - 160, 日本語先端巨大症患者におけるBMIと肥満関連疾患の有病率についての検討
- (一社)日本糖尿病学会, 2022年04月, 糖尿病, 65(Suppl.1) (Suppl.1), S - 161, 日本語成人成長ホルモン分泌不全症(AGHD)患者におけるGH補充療法による耐糖能への影響に関する検討
- (一社)日本糖尿病学会, 2022年04月, 糖尿病, 65(Suppl.1) (Suppl.1), S - 169, 日本語1型糖尿病(T1DM)患者におけるIGF-Iと自由行動下のCGM指標に関連する因子の検討
- (一社)日本糖尿病学会, 2022年04月, 糖尿病, 65(Suppl.1) (Suppl.1), S - 177, 日本語1型糖尿病患者におけるSGLT2阻害薬使用の影響に関する検討
- (一社)日本糖尿病学会, 2022年04月, 糖尿病, 65(Suppl.1) (Suppl.1), S - 308, 日本語肥満症患者に対する術前減量サポートの効果と周術期合併症に関する検討
- (一社)日本肥満学会, 2022年03月, 肥満研究, 27(Suppl.) (Suppl.), 176 - 176, 日本語肥満のゲノムサイエンス 減量外来受診後にパイロシークエンス法によって診断し得たPrader-Willi症候群の一例
- (一社)日本肥満学会, 2022年03月, 肥満研究, 27(Suppl.) (Suppl.), 176 - 176, 日本語肥満のゲノムサイエンス 減量外来受診後にパイロシークエンス法によって診断し得たPrader-Willi症候群の一例
- 2022年, 日本臨床内分泌病理学会学術総会プログラム・抄録集, 26thGonadotroph tumorとsomatotroph tumorのcollisionと考えられた一例
- 2022年, 糖尿病(Web), 65(Suppl) (Suppl)先端巨大症患者におけるBMIと肥満関連疾患の有病率についての検討
- 2022年, 糖尿病(Web), 65(Suppl) (Suppl)1型糖尿病(T1DM)患者におけるIGF-Iと自由行動下のCGM指標に関連する因子の検討
- 2022年, 糖尿病(Web), 65(Suppl) (Suppl)肥満症患者における食行動質問表の各因子スコアと減量効果予測の検討
- 2022年, 糖尿病(Web), 65(Suppl) (Suppl)Free StyleリブレLink使用者の背景および導入前後におけるスキャン回数,HbA1cの変化の検討
- 2022年, 糖尿病(Web), 65(Suppl) (Suppl)肥満症における11の健康障害と長期的な体重変化との関連の検討
- 2022年, 糖尿病(Web), 65(Suppl) (Suppl)SGLT2阻害薬投与後のHb増加に伴うGA/HbA1c比への影響に関する検討
- 2022年, 糖尿病(Web), 65(5) (5)インスリン抗体の性質変化に伴いインスリン注射回数の変更を要した1型糖尿病の1例
- 2022年, 糖尿病(Web), 65(Suppl) (Suppl)成人成長ホルモン分泌不全症(AGHD)患者におけるGH補充療法による耐糖能への影響に関する検討
- 2022年, 糖尿病(Web), 65(5) (5)肺炎治療中に急激に発症し短期間で改善したSLE併発B型インスリン抵抗症の1例
- 2022年, 糖尿病(Web), 65(Suppl) (Suppl)免疫チェックポイント阻害薬投与後に発症した1型糖尿病様の糖尿病の特徴と膵臓MRI所見との関連についての検討
- 2022年, 糖尿病(Web), 65(Suppl) (Suppl)肥満症患者に対する術前減量サポートの効果と周術期合併症に関する検討
- 2022年, 糖尿病(Web), 65(Suppl) (Suppl)1型糖尿病患者におけるSGLT2阻害薬使用の影響に関する検討
- 2022年, 糖尿病(Web), 65(Suppl) (Suppl)若年で糖尿病を発症した小児がん経験者の1例
- 2022年, 日本内分泌学会雑誌, 98(1) (1)Cushing症候群診断時における自覚症状と他覚所見の乖離について
- 2022年, 日本内分泌学会雑誌, 98(1) (1)疾患iPS細胞を用いた自己免疫性下垂体疾患のin vitro疾患モデルの樹立
- 2022年, 日本内分泌学会雑誌, 98(1) (1)甲状腺刺激ホルモン(TSH)の測定系のハーモナイゼーションから探る測定系に不安定性を与える因子の検討
- 2022年, 日本内分泌学会雑誌, 98(1) (1)グルココルチコイド補充中患者におけるCOVID-19ワクチン接種後のステロイドカバーに関する実態調査
- 2022年, 間脳・下垂体・副腎系研究会プログラム・抄録集(Web), 33rdCushing症候群診断時における自覚症状と他覚所見の乖離について
- 2022年, 日本間脳下垂体腫瘍学会プログラム・抄録集, 32nd輸血によりゴナドトロピン単独欠損症をきたした再生不良性貧血の一例
- 2022年, 日本間脳下垂体腫瘍学会プログラム・抄録集, 32ndグルココルチコイド補充療法患者におけるCOVID-19ワクチン接種後のステロイドカバーに関する実態調査
- 2022年, 日本間脳下垂体腫瘍学会プログラム・抄録集, 32nd重症筋無力症を合併した抗PIT-1下垂体炎の新規症例
- 2022年, 日本間脳下垂体腫瘍学会プログラム・抄録集, 32nd神戸大学医学部附属病院におけるクッシング病の診療実態
- 2022年, 日本間脳下垂体腫瘍学会プログラム・抄録集, 32ndUSP8変異はAVPR1b受容体高発現を介してクッシング病のDDAVP試験反応性と関連する
- (一社)日本内分泌学会, 2021年12月, 日本内分泌学会雑誌, 97(4) (4), 907 - 907, 日本語
- (一社)日本内分泌学会, 2021年12月, 日本内分泌学会雑誌, 97(4) (4), 907 - 907, 日本語
- (一社)日本内分泌学会, 2021年10月, 日本内分泌学会雑誌, 97(2) (2), 487 - 487, 日本語胸腺腫術後に重症筋無力症を発症した抗PIT-1下垂体炎の1例
- (一社)日本内分泌学会, 2021年10月, 日本内分泌学会雑誌, 97(2) (2), 501 - 501, 日本語USP8変異はV1b受容体発現、DDAVP試験反応性亢進と関連する
- (一社)日本内分泌学会, 2021年10月, 日本内分泌学会雑誌, 97(2) (2), 505 - 505, 日本語発症36年後に抗ラブフィリン3A抗体陽性を示した尿崩症の1例
- (一社)日本内分泌学会, 2021年10月, 日本内分泌学会雑誌, 97(2) (2), 528 - 528, 日本語COVID-19治療中の高血圧クリーゼから診断した褐色細胞腫の一例
- (一社)日本内分泌学会, 2021年10月, 日本内分泌学会雑誌, 97(2) (2), 533 - 533, 日本語ICIとTKI使用後に原発性副腎不全を生じた腎癌の2例
- (一社)日本内分泌学会, 2021年10月, 日本内分泌学会雑誌, 97(2) (2), 539 - 539, 日本語paragangliomaとganglioneuromaの混合腫瘍の1例
- (株)医学書院, 2021年08月, Medicina, 58(9) (9), 1355 - 1359, 日本語
- (一社)日本内分泌学会, 2021年04月, 日本内分泌学会雑誌, 97(1) (1), 122 - 122, 日本語
- (一社)日本内分泌学会, 2021年04月, 日本内分泌学会雑誌, 97(1) (1), 167 - 167, 日本語
- 2021年, 日本臨床内分泌病理学会学術総会プログラム・抄録集, 25th両側副腎での123I-MIBG陽性例における臨床的,病理学的検討
- 2021年, 日本神経内分泌学会学術集会プログラム・抄録集, 47th疾患iPS細胞を用いた自己免疫性下垂体疾患のin vitro疾患モデルの樹立
- 日本臨床分子医学会, 2020年04月, 日本臨床分子医学会学術総会プログラム・抄録集, 57回, 78 - 78, 日本語疾患iPS細胞/抗原特異的T細胞を用いた抗PIT-1下垂体炎疾患モデルの樹立[査読有り]
- 日本臨床分子医学会, 2020年04月, 日本臨床分子医学会学術総会プログラム・抄録集, 57回(1) (1), 78 - 78, 日本語
- 2019年04月, Journal of the Endocrine Society
- 2019年04月, Journal of the Endocrine Society
- 2019年04月, Journal of the Endocrine Society
- 2019年04月, Journal of the Endocrine Society
- (一社)日本内分泌学会, 2019年04月, 日本内分泌学会雑誌, 95(1) (1), 390 - 390, 日本語疾患iPS細胞を用いた抗PIT-1抗体症候群疾患モデルの樹立
- (一社)日本内分泌学会, 2019年04月, 日本内分泌学会雑誌, 95(1) (1), 430 - 430, 日本語ACTH単独欠損症において抗コルチコトロフ抗体の存在は重症度と関連する
- (一社)日本内分泌学会, 2019年04月, 日本内分泌学会雑誌, 95(1) (1), 390 - 390, 日本語
- (一社)日本内分泌学会, 2019年04月, 日本内分泌学会雑誌, 95(1) (1), 430 - 430, 日本語
- (一社)日本内分泌学会, 2018年09月, 日本内分泌学会雑誌, 94(2) (2), 713 - 713, 日本語
- (一社)日本内分泌学会, 2018年09月, 日本内分泌学会雑誌, 94(2) (2), 712 - 712, 日本語
- (一社)日本内分泌学会, 2018年09月, 日本内分泌学会雑誌, 94(2) (2), 607 - 607, 日本語
- (一社)日本内分泌学会, 2018年09月, 日本内分泌学会雑誌, 94(2) (2), 607 - 607, 日本語
- (一社)日本内分泌学会, 2018年09月, 日本内分泌学会雑誌, 94(2) (2), 681 - 681, 日本語
- (一社)日本内分泌学会, 2018年09月, 日本内分泌学会雑誌, 94(2) (2), 714 - 714, 日本語
- (一社)日本肥満学会, 2018年09月, 肥満研究, 24(Suppl.) (Suppl.), 194 - 194, 日本語
- (一社)日本糖尿病学会, 2018年06月, 糖尿病, 61(6) (6), 401 - 401, 日本語2型糖尿病患者の血中IGF-I値に影響を与える因子の検討
- (一社)日本内分泌学会, 2018年06月, 日本内分泌学会雑誌, 94(Suppl.Update) (Suppl.Update), 32 - 34, 日本語
- (一社)日本内分泌学会, 2018年04月, 日本内分泌学会雑誌, 94(1) (1), 277 - 277, 日本語
- (一社)日本内分泌学会, 2018年04月, 日本内分泌学会雑誌, 94(1) (1), 186 - 186, 日本語
- (一社)日本内分泌学会, 2018年04月, 日本内分泌学会雑誌, 94(1) (1), 313 - 313, 日本語
- (一社)日本内分泌学会, 2018年04月, 日本内分泌学会雑誌, 94(1) (1), 341 - 341, 日本語
- (一社)日本内分泌学会, 2018年04月, 日本内分泌学会雑誌, 94(1) (1), 342 - 342, 日本語
- (一社)日本内分泌学会, 2018年04月, 日本内分泌学会雑誌, 94(1) (1), 386 - 386, 日本語
- 間脳・下垂体・副腎系研究会, 2018年03月, ACTH RELATED PEPTIDES, 29, 42 - 43, 日本語下垂体-副腎の分子生物学 Long noncoding RNA、CRNDEはACTH産生下垂体腺腫の増殖、浸潤性に関連する
- 2018年, 日本内分泌学会雑誌, 94(1) (1)Luscan-Lumish症候群による巨人症の機序の解析
- (一社)日本内分泌学会, 2017年10月, 日本内分泌学会雑誌, 93(2) (2), 535 - 535, 日本語
- (一社)日本内分泌学会, 2017年10月, 日本内分泌学会雑誌, 93(2) (2), 568 - 568, 日本語
- (一社)日本内分泌学会, 2017年10月, 日本内分泌学会雑誌, 93(2) (2), 546 - 546, 日本語
- (一社)日本内分泌学会, 2017年10月, 日本内分泌学会雑誌, 93(2) (2), 550 - 550, 日本語
- (一社)日本内分泌学会, 2017年10月, 日本内分泌学会雑誌, 93(2) (2), 550 - 550, 日本語
- (一社)日本内分泌学会, 2017年10月, 日本内分泌学会雑誌, 93(2) (2), 552 - 552, 日本語
- (一社)日本内分泌学会, 2017年10月, 日本内分泌学会雑誌, 93(2) (2), 596 - 596, 日本語
- (一社)日本内分泌学会, 2017年10月, 日本内分泌学会雑誌, 93(2) (2), 599 - 599, 日本語
- (一社)日本内分泌学会, 2017年04月, 日本内分泌学会雑誌, 93(1) (1), 263 - 263, 日本語
- (一社)日本内分泌学会, 2017年04月, 日本内分泌学会雑誌, 93(1) (1), 176 - 176, 日本語
- (一社)日本内分泌学会, 2017年04月, 日本内分泌学会雑誌, 93(1) (1), 225 - 225, 日本語
- (一社)日本内分泌学会, 2017年04月, 日本内分泌学会雑誌, 93(1) (1), 227 - 227, 日本語
- (一社)日本内分泌学会, 2017年04月, 日本内分泌学会雑誌, 93(1) (1), 249 - 249, 日本語
- (一社)日本内分泌学会, 2017年04月, 日本内分泌学会雑誌, 93(1) (1), 249 - 249, 日本語
- (一社)日本内分泌学会, 2017年04月, 日本内分泌学会雑誌, 93(1) (1), 264 - 264, 日本語
- (一社)日本内分泌学会, 2017年04月, 日本内分泌学会雑誌, 93(1) (1), 267 - 267, 日本語
- (一社)日本内分泌学会, 2017年04月, 日本内分泌学会雑誌, 93(1) (1), 370 - 370, 日本語
- (NPO)日本呼吸器外科学会, 2017年04月, 日本呼吸器外科学会雑誌, 31(3) (3), O14 - 6, 日本語胸腺腫に関連した新規疾患概念、抗PIT-1抗体症候群
- 2017年, 日本内分泌学会雑誌, 93(2) (2)遺伝性平滑筋腫症・腎細胞癌症候群に合併した副腎腫瘍の意義
- (一社)日本内分泌学会, 2017年01月, 日本内分泌学会雑誌, 92(3) (3), 732 - 732, 日本語
- (一社)日本内分泌学会, 2016年10月, 日本内分泌学会雑誌, 92(2) (2), 453 - 453, 日本語特発性後天性全身性無汗症に中枢性尿崩症を合併した一例
- (一社)日本内分泌学会, 2016年10月, 日本内分泌学会雑誌, 92(2) (2), 460 - 460, 日本語
- (一社)日本内分泌学会, 2016年10月, 日本内分泌学会雑誌, 92(2) (2), 495 - 495, 日本語
- (一社)日本内分泌学会, 2016年10月, 日本内分泌学会雑誌, 92(2) (2), 501 - 501, 日本語
- (一社)日本内分泌学会, 2016年10月, 日本内分泌学会雑誌, 92(2) (2), 516 - 516, 日本語
- (一社)日本内分泌学会, 2016年10月, 日本内分泌学会雑誌, 92(2) (2), 528 - 528, 日本語
- (一社)日本内分泌学会, 2016年04月, 日本内分泌学会雑誌, 92(1) (1), 140 - 140, 日本語
- (一社)日本内分泌学会, 2016年04月, 日本内分泌学会雑誌, 92(1) (1), 202 - 202, 日本語
- (一社)日本内分泌学会, 2016年04月, 日本内分泌学会雑誌, 92(1) (1), 219 - 219, 日本語
- (一社)日本内分泌学会, 2016年04月, 日本内分泌学会雑誌, 92(1) (1), 231 - 231, 日本語
- (一社)日本内分泌学会, 2016年04月, 日本内分泌学会雑誌, 92(1) (1), 260 - 260, 日本語
- (一社)日本内分泌学会, 2016年04月, 日本内分泌学会雑誌, 92(1) (1), 300 - 300, 日本語
- (一社)日本内分泌学会, 2016年04月, 日本内分泌学会雑誌, 92(1) (1), 301 - 301, 日本語
- (一社)日本内分泌学会, 2016年04月, 日本内分泌学会雑誌, 92(1) (1), 309 - 309, 日本語
- (一社)日本内分泌学会, 2016年04月, 日本内分泌学会雑誌, 92(1) (1), 319 - 319, 日本語
- (一社)日本糖尿病学会, 2016年04月, 糖尿病, 59(Suppl.1) (Suppl.1), S - 154, 日本語糖尿病合併先端巨大症における糖尿病性血管合併症の頻度
- (一社)日本内分泌学会, 2015年10月, 日本内分泌学会雑誌, 91(3) (3), 797 - 797, 日本語
- (一社)日本内分泌学会, 2015年10月, 日本内分泌学会雑誌, 91(3) (3), 799 - 799, 日本語
- (一社)日本内分泌学会, 2015年10月, 日本内分泌学会雑誌, 91(3) (3), 800 - 800, 日本語
- (一社)日本内分泌学会, 2015年10月, 日本内分泌学会雑誌, 91(3) (3), 810 - 810, 日本語
- (一社)日本内分泌学会, 2015年10月, 日本内分泌学会雑誌, 91(3) (3), 856 - 856, 日本語
- (一社)日本内分泌学会, 2015年10月, 日本内分泌学会雑誌, 91(3) (3), 861 - 861, 日本語
- (一社)日本内分泌学会, 2015年09月, 日本内分泌学会雑誌, 91(2) (2), 502 - 502, 日本語
- (一社)日本内分泌学会, 2015年04月, 日本内分泌学会雑誌, 91(1) (1), 266 - 266, 日本語
- (一社)日本内分泌学会, 2015年04月, 日本内分泌学会雑誌, 91(1) (1), 270 - 270, 日本語
- (一社)日本内分泌学会, 2015年04月, 日本内分泌学会雑誌, 91(1) (1), 365 - 365, 日本語
- (一社)日本内分泌学会, 2015年04月, 日本内分泌学会雑誌, 91(1) (1), 382 - 382, 日本語
- (一社)日本内分泌学会, 2015年04月, 日本内分泌学会雑誌, 91(1) (1), 397 - 397, 日本語
- (一社)日本内分泌学会, 2014年10月, 日本内分泌学会雑誌, 90(3) (3), 912 - 912, 日本語
- (一社)日本内分泌学会, 2014年10月, 日本内分泌学会雑誌, 90(3) (3), 917 - 917, 日本語
- (一社)日本内分泌学会, 2014年10月, 日本内分泌学会雑誌, 90(3) (3), 922 - 922, 日本語
- (一社)日本内分泌学会, 2014年10月, 日本内分泌学会雑誌, 90(3) (3), 931 - 931, 日本語
- (一社)日本内分泌学会, 2014年10月, 日本内分泌学会雑誌, 90(3) (3), 968 - 968, 日本語
- 2014年06月, ENDOCRINE REVIEWS, 35(3) (3), 英語The Effect of Type 2 Diabetes on Serum GH and IGF-I Levels in Relatively Lean Japanese Patients研究発表ペーパー・要旨(国際会議)
- (一社)日本内分泌学会, 2014年04月, 日本内分泌学会雑誌, 90(1) (1), 211 - 211, 日本語
- (一社)日本内分泌学会, 2014年04月, 日本内分泌学会雑誌, 90(1) (1), 257 - 257, 日本語
- (一社)日本内分泌学会, 2014年04月, 日本内分泌学会雑誌, 90(1) (1), 264 - 264, 日本語
- (一社)日本内分泌学会, 2014年04月, 日本内分泌学会雑誌, 90(1) (1), 277 - 277, 日本語
- (一社)日本内分泌学会, 2014年04月, 日本内分泌学会雑誌, 90(1) (1), 289 - 289, 日本語
- (一社)日本内分泌学会, 2014年04月, 日本内分泌学会雑誌, 90(1) (1), 293 - 293, 日本語
- (一社)日本病態栄養学会, 2013年12月, 日本病態栄養学会誌, 17(Suppl.) (Suppl.), S - 106, 日本語
- (一社)日本内分泌学会, 2013年12月, 日本内分泌学会雑誌, 89(3) (3), 933 - 933, 日本語
- (一社)日本内分泌学会, 2013年12月, 日本内分泌学会雑誌, 89(3) (3), 937 - 937, 日本語
- (一社)日本内分泌学会, 2013年12月, 日本内分泌学会雑誌, 89(3) (3), 974 - 974, 日本語
- (一社)日本内分泌学会, 2013年12月, 日本内分泌学会雑誌, 89(3) (3), 975 - 975, 日本語
- (一社)日本内分泌学会, 2013年12月, 日本内分泌学会雑誌, 89(3) (3), 988 - 988, 日本語
- (一社)日本内分泌学会, 2013年12月, 日本内分泌学会雑誌, 89(3) (3), 999 - 999, 日本語
- (一社)日本病態栄養学会, 2013年12月, 日本病態栄養学会誌, 17(Suppl.) (Suppl.), S - 106, 日本語栄養介入・ステロイド補充にて全身状態が著明に改善した相対的副腎不全の一例
- (一社)日本内分泌学会, 2013年09月, 日本内分泌学会雑誌, 89(2) (2), 578 - 578, 日本語
- (一社)日本内分泌学会, 2013年06月, 日本内分泌学会雑誌, 89(Suppl.Update) (Suppl.Update), 5 - 7, 日本語
- (一社)日本内分泌学会, 2013年06月, 日本内分泌学会雑誌, 89(Suppl.Update) (Suppl.Update), 30 - 32, 日本語
- (一社)日本内分泌学会, 2013年04月, 日本内分泌学会雑誌, 89(1) (1), 240 - 240, 日本語
- (一社)日本内分泌学会, 2013年04月, 日本内分泌学会雑誌, 89(1) (1), 254 - 254, 日本語
- (一社)日本内分泌学会, 2013年04月, 日本内分泌学会雑誌, 89(1) (1), 320 - 320, 日本語
- (一社)日本内分泌学会, 2013年04月, 日本内分泌学会雑誌, 89(1) (1), 324 - 324, 日本語
- (一社)日本糖尿病学会, 2013年02月, 糖尿病, 56(2) (2), 124 - 124, 日本語巨大癰を併発した未治療2型糖尿病の1例
- (一社)日本内分泌学会, 2012年12月, 日本内分泌学会雑誌, 88(3) (3), 1013 - 1013, 日本語
- (一社)日本内分泌学会, 2012年12月, 日本内分泌学会雑誌, 88(3) (3), 1014 - 1014, 日本語
- (一社)日本内分泌学会, 2012年12月, 日本内分泌学会雑誌, 88(3) (3), 1047 - 1047, 日本語
- (一社)日本内分泌学会, 2012年12月, 日本内分泌学会雑誌, 88(3) (3), 1050 - 1050, 日本語
- 医学の世界社, 2012年10月, ホルモンと臨床, 60(10) (10), 787 - 793, 日本語抗PIT-1抗体症候群の病態と自己免疫性下垂体疾患における位置付け (特集 下垂体疾患最前線) -- (下垂体疾患の新しい病態)
- (一社)日本内分泌学会, 2012年09月, 日本内分泌学会雑誌, 88(2) (2), 604 - 604, 日本語
- (一社)日本糖尿病学会, 2012年08月, 糖尿病, 55(8) (8), 660 - 660, 日本語膵全摘・幽門側胃切後の膵性糖尿病に対し、CSIIを導入した1例
- (一社)日本糖尿病学会, 2012年08月, 糖尿病, 55(8) (8), 661 - 661, 日本語感覚性失語にて横静脈洞血栓症を発症したコントロール不良の2型糖尿病の1例
- (一社)日本糖尿病学会, 2012年04月, 糖尿病, 55(Suppl.1) (Suppl.1), S - 170, 日本語1型糖尿病患者におけるカーボカウント法を継続できた群とできなかった群の患者および栄養士の要因背景
- (一社)日本内分泌学会, 2011年12月, 日本内分泌学会雑誌, 87(3) (3), 954 - 954, 日本語
- (一財)甲南病院, 2011年04月, 甲南病院医学雑誌, 28, 5 - 7, 日本語糖尿病の新しい血糖降下薬の臨床 インクレチン製剤の臨床の基礎記事・総説・解説・論説等(国際会議プロシーディングズ)
- (一社)日本糖尿病学会, 2011年04月, 糖尿病, 54(Suppl.1) (Suppl.1), S - 112, 日本語誤嚥性肺炎発症時のHbA1c・血糖・栄養状態における予後の検討
- (一社)日本糖尿病学会, 2011年04月, 糖尿病, 54(Suppl.1) (Suppl.1), S - 153, 日本語糖尿病ではAtherogenic phenotypeは高齢でも残存する
- (一社)日本糖尿病学会, 2011年03月, 糖尿病, 54(3) (3), 215 - 215, 日本語腸腰筋膿瘍を認めた肝硬変合併2型糖尿病の一例
- (一社)日本内分泌学会, 2009年04月, 日本内分泌学会雑誌, 85(1) (1), 363 - 363, 日本語
- 日本学術振興会, 科学研究費助成事業 国際共同研究加速基金(国際共同研究強化(B)), 国際共同研究加速基金(国際共同研究強化(B)), 神戸大学, 2021年10月 - 2026年03月, 研究代表者先駆的解析法に基づく先天性下垂体機能低下症の病因解明と新規疾患概念の創出本研究は先天性下垂体機能低下症の原因・病態について、申請者の持ちうるマテリアルを米国ミシガン大学のSally Camper研究室の持つ先進的な手法を用いて解析を行うものである。 [母体内環境因子曝露による下垂体機能低下症] (研究予定ではCdon遺伝子欠損マウスの予定であったが、入手困難であり、Otx2遺伝子欠損マウスに変更した)本研究課題の共同研究者である、大阪母子医療センター部長 松尾勲先生よりOtx2ヘテロの凍結胚(ICR background)を分与頂き、マウスの維持を開始した。既報通り、ICR backgroundでは表現型も正常であった。下垂体はLH, FSHを分泌することで性周期の維持にも働くことが知られているが、生殖も問題なく行っていることから、下垂体の各種ホルモン分泌異常が無いことも推察される結果であった。これまでの報告では、同マウスにおいての下垂体ホルモンの分泌状態については推察がなされていなかったが、妊孕性を評価することで同マウスが通常状態では明らかな異常がないことを推察し得る結果を得ることが出来た。現在当初の目標である母体内での環境因子曝露を開始しているところであり、次年度早々には下垂体を含めた頭部の形成異常について評価し得るものと思われる。 [日本人サンプルを用いた、新規先天性下垂体機能低下症の原因遺伝子の同定] 現在申請者の所属する神戸大学医学部の他、複数の共同研究者から先天性下垂体機能低下症の患者サンプルを収集中である。本年夏ころまでには収集し終え、解析に移る予定である、
- 日本学術振興会, 科学研究費助成事業 若手研究, 若手研究, 神戸大学, 2021年04月 - 2024年03月, 研究代表者母体内環境因子による下垂体形成異常の解明先天性下垂体機能低下症(CPHD)は30超の原因遺伝子が報告されているのにも関わらず、症例の大半は原因遺伝子などが不明である。また、原因遺伝子が明らかになった家族例であっても下垂体を含めた頭部を中心とした症候が多彩であることが特徴であるため、診断に難渋することが多い。原因の一つとして知られている全前脳胞症のモデルを発展させることを目標にした。特に本研究課題ではCPHD発症の機序の可能性として、遺伝子変異に伴って発症閾値が低下している状態に加え、母体内環境因子への曝露に伴うエピジェネティック異常などの原因によって発症する可能性につき検討した。本検討では通常状態では正常の表現型を呈するOtx2遺伝子のヘテロ接合性欠損マウスを用い、母体内にアルコールを腹腔内投与を行うことで検討を行った。共同研究者から得られたOtx2欠損マウスの飼育を開始し、今後の更なる解析の準備を整えることが出来た。 また、申請者がこれまでに行ってきた下垂体形成モデルから得られた分子について、下垂体ラトケ嚢胞の病理診断マーカーとして用いうる可能性について明らかにすることを目標に、共同研究者から得たヒトサンプルを用いた免疫染色を進め、各種マーカーが使用できることを明らかにした。 また、研究者がこれまで行ってきた新たな疾患概念、”傍腫瘍自己免疫性下垂体炎”に関して研究を進め、国際誌に総説を投稿するとともに、新たな症例について検討を平行して行った。 (なお、国際共同研究強化Bの採択に伴い、本研究課題については中止となった)
- 日本学術振興会, 科学研究費助成事業 若手研究(B), 若手研究(B), 神戸大学, 2017年04月 - 2019年03月, 研究代表者本研究は下垂体を中心とした自己免疫性内分泌疾患の発症メカニズムの解明と臨床応用を目指し、新規症例の解析から診断・治療への臨床応用の基盤確立が目的である。腫瘍に合併し下垂体機能低下症を起こした症例を解析し、腫瘍随伴症候群っとしての新たな下垂体機能低下症の提唱を行った。また、下垂体に特異的に存在する転写因子"PIT-1"に対する自己抗体を有する症候群(抗PIT-1抗体症候群)についてPIT-1陽性細胞の解析を行い、PIT-1抗原がMHC classIと共に細胞表面に提示されていることを示した。また、IgG4関連疾患の代表である自己免疫性膵炎における下垂体炎の頻度について臨床研究を行った。