松宮 亘 | ![]() |
マツミヤ ワタル | |
大学院医学研究科 医科学専攻 | |
助教 | |
医学 |
[査読有り]
研究論文(大学,研究機関等紀要)
[査読有り]
研究論文(学術雑誌)
[査読有り]
研究論文(学術雑誌)
PURPOSE: To investigate the effects of reproducibility of optical coherence tomography (OCT) measurements and imaging alignment on predictive performance for visual outcome following macular hole (MH) surgery. METHODS: We retrospectively reviewed 50 eyes that underwent MH surgery. Preoperative cross-sectional images through the center of the MH (on-center image) and through an off-center point (off-center image) were obtained from the OCT data. In each image, the following OCT parameters were either measured or calculated: minimum diameter, base diameter, hole height, temporal and nasal arm length, photoreceptor inner segment/outer segment (IS/OS) defect length, the hole form factor, the macular hole index and the tractional hole index. The IS/OS defect area was also measured. RESULTS: The reproducibility of OCT parameter values was moderate to high, and there was a significant difference in the mean measurement values between the on- and off-center images. Predictive values varied between sessions and raters, and only the preoperative photoreceptor IS/OS defect length consistently showed significant correlation with postoperative visual outcome. CONCLUSIONS: Both the reproducibility and imaging alignment might affect the predictive performance of the OCT parameter for postoperative visual outcome following MH surgery. The preoperative photoreceptor IS/OS defect length seems to be the most useful parameter in this regard.
2013年05月, Japanese journal of ophthalmology, 57 (3), 308 - 15, 英語, 国内誌[査読有り]
研究論文(学術雑誌)
[査読有り]
研究論文(学術雑誌)
PURPOSE: Multidrug resistance protein 4 (MRP4) effluxes a wide variety of endogenous compounds, including cyclic adenosine monophosphate (cAMP), and is exclusively expressed in vascular endothelial cells (ECs) of the retina. This study aimed to investigate the role of MRP4 in retinal vascular development. METHODS: The retinal vascular phenotype of Mrp4(-/-) mice was examined by whole-mount immunohistochemistry at P3, P6, and P14. The retinas from P6 pups that received an intraperitoneal injection of either solvent control or forskolin, an inducer of intracellular cAMP formation, at P4 and P5 were analyzed in terms of their vascular formation (vascular length, vascular branching, vascular density, and the number of tip cells), cell proliferation and apoptosis, and vessel stability. RESULTS: The Mrp4(-/-) mice exhibited no overt abnormalities in the development of the retinal vasculature, but retinal vascular development in the Mrp4(-/-) mice was suppressed in response to forskolin administration. There was a significant decrease in the vascular length, vascular branching, and vascular density, and inhibited tip cell formation at the vascular front. The forskolin-treated Mrp4(-/-) mice showed an increased number of Ki67-positive and cleaved caspase 3-positive ECs, a significant decrease in the amount of pericyte coverage, and a reduced number of empty sleeves. In pups exposed to hyperoxia (75% oxygen) from P7 to P12, the Mrp4(-/-) mice showed a significant increase in the unvascularized retinal area. CONCLUSIONS: Mrp4(-/-) mice exhibited suppressed retinal vascular development in response to forskolin treatment. Thus, Mrp4 might have protective roles in retinal vascular development by regulating the intracellular cAMP level.
2012年12月07日, Investigative ophthalmology & visual science, 53 (13), 8029 - 35, 英語, 国際誌[査読有り]
研究論文(学術雑誌)
研究論文(その他学術会議資料等)
[査読有り]
研究論文(学術雑誌)
研究論文(その他学術会議資料等)
[査読有り]
研究論文(学術雑誌)
Polypoidal choroidal vasculopathy (PCV) is currently recognized as a phenotype of age-related macular degeneration (AMD). PCV is believed to be a type of choroidal neovascularization, although some cases of PCV show a distinct vascular abnormality of the choroidal vessels. PCV often shows several unique clinical manifestations which are apparently different from typical neovascular AMD (tAMD). In addition, the natural course and response to treatment are often different between tAMD and PCV. Moreover, recent genetic studies suggested a possible difference in the genetic susceptibility to disease between tAMD and PCV, as well as the existence of heterogeneity among PCV cases. In viewing the accumulation of knowledge about PCV, we have summarized the recent literature regarding PCV in this review article to improve the understanding of this clinical entity including possible susceptibility genes. We will also discuss the optimal treatment strategies for PCV in accordance with the results of recent clinical and genetic studies. (C) 2013 S. Karger AG, Basel
KARGER, 2014年, OPHTHALMOLOGICA, 231 (2), 59 - 74, 英語書評論文,書評,文献紹介等
記事・総説・解説・論説等(学術雑誌)
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