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Pathological changes in the cellular structures of retina and choroidea in the early stages of alloxan-induced diabetes

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World Journal of Diabetes 2018年第12期9卷 239-251页

作者： Irina Danilova Svetlana Medvedeva Svetlana Shmakova margarita chereshneva Alexey Sarapultsev Petr Sarapultsev Department of Biology and Fundamental Medicine Institute of Natural Sciences and Mathematics Ural Federal University Named After the First Pres.of Russia B.N.Yeltsin Laboratory of Morphology and Biochemistry Institute of Immunology and Physiology Ural Division of Russian Academy of Sciences Laboratory of Immunophysiology and Immunopharmacology Institute of Immunology and Physiology Ural Division of Russian Academy of Sciences Institute of Chemical Engineering Ural Federal University Named After the First Pres. of Russia B.N. Yeltsin Laboratory of Immu-nophatophysiology Institute of Immunology and Physiology Ural Division of Russian Academy of Sciences

AIM To investigate the temporal sequence of pathological changes in the cellular structures of retina and choroidea in the early stages of diabetes in laboratory *** Experimental type 1 diabetes was modeled by three intraperitoneal injections of an alloxan solution into 30 male nonlinear rats at 16 wk of age. The 30 th and 60 th days from the final alloxan injection were chosen as the endpoints. Light and electron microscopy and morphometric and immunohistochemical studies were performed on histological slices of eyeballs from experimental *** Diabetic disturbances progressed to 60 d of the experiment. Thus, in the retina, a partial destruction of photoreceptors accompanied by interstitial edema was observed. The morphometric analysis revealed a reduction in the thickness of the retina. A reduction in the number of blood vessels of the choroid with disturbances of the endothelial cells and the vascular walls and a persistent reduction in the number of melanocytes were observed. The number of proliferating Ki-67 positive cells decreased, and the number of macrophages increased with diabetes *** The starting point in the development of destructive changes involves early reduction in the number of melanocytes of the choroidea and alterations in the retinal pigment epithelium.

关键词： Alloxan Diabetes Diabetic retinopathy Early stage Morphology Histological changes

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