JaLCDOI 10.18926/AMO/40502
フルテキストURL 64_5_277.pdf
著者 Kumase, Fumiaki| Morizane, Yuki| Mohri, Satoshi| Takasu, Ippei| Ohtsuka, Aiji| Ohtsuki, Hiroshi|
抄録 Endothelial glycocalyx (GCX) has been reported as a protective factor for vascular endothelial cells (VEC) in diabetes and hypertension. However, the involvement of GCX impairment in ocular vasculopathy remains unclear. We evaluated the changes in the GCX thicknesses of the retinal and choroidal capillaries in rats with diabetes and hypertension by cationic colloidal iron staining using a transmission electron microscope. In the control group, the mean (standard error of the mean) thicknesses of retinal and choroidal GCX were 60.2 (1.5) nm and 84.3 (3.1) nm, respectively. The diabetic rats showed a significant decrease of GCX thickness in the retina, but not in the choroid, compared to controls (28.3 (0.3) nm, p<0.01 and 77.8 (1.4) nm, respectively). In the hypertensive rats, both retinal and choroidal GCX were significantly decreased compared to the control values (10.9 (0.4) nm and 13.2 (1.0) nm, respectively, both p<0.01). Moreover, we could visualize the adhesion of leukocytes and platelets on the luminal surface of VEC, at the site where the GCX was markedly degraded. These findings suggest that the GCX prevents adhesion of leukocytes and platelets to the VEC surface, and this impairment may lead to ocular vasculopathy in diabetes and hypertension.
キーワード glycocalyx retina choroid diabetes hypertension
Amo Type Original Article
発行日 2010-10
出版物タイトル Acta Medica Okayama
出版者 Okayama University Medical School
開始ページ 277
終了ページ 283
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 CopyrightⒸ 2010 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 20975760
Web of Sience KeyUT 000283563300002