Abstract
Retinopathy can be observed in most ocular diseases and the late complications of diabetes mellitus. The specific pigment epithelial cells and optic cells' damage and degeneration are the main features of retinopathy. Manytraditional medicines have shown substantial clinical efficacy in treating retinopathy. How to obtain a retina quickly and completely is a key step in traditional medicine research for the treatment of retinopathy. In this study, we aim to provide a standardized and exercisable procedure for sampling of N-methyl-N-nitrosourea (MNU)-induced rat's retina damage and multi-index evaluation of pathological changes. Rats were injected intraperitoneally with 60 mg/kg MNU once to induce retina damage, and retina samples were obtained after 7 days. Additionally, we performed hematoxylin-eosin staining to assess retinal pathologicalchanges.Determination of the apoptosis rate and apoptosis protein by TUNEL and Western blot. These standardized protocols for retinal sampling and evaluation of pathological changes are helpful in promoting the exploration of the mechanism of retinopathy and the discovery of novel and effective traditional herbs.
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