Myricitrin exerts protective effect on retina in diabetic retinopathy via modulating oxidative stress expression of VEGF and apoptosis in experimental rats: a docking confirmation study

다국어 초록 (Multilingual Abstract)

Background The present study investigates the protective effect of myricitrin (MCT) on the retinal tissues in diabetic retinopathy of diabetic rats.
Objective The diabetic rat model was created by treating the rats with streptozotocin along with high-energy diet. The blood glucose was evaluated by glucose estimation kit, and rats measuring glucose ≥ 12.00 mmol/L were considered diabetic and were selected for the study. The diabetes-induced rats were divided randomly as diabetic control rats (vehicle treated) (DB), diabetic rats MCT (100 mg/kg) (DB + MCT 100 mg/kg) and diabetic rats MCT 200 mg/kg (DB + MCT 200 mg/kg). Rats received MCT for 12 weeks via oral route daily. The rats after 12 weeks were sacrificed, and the eyes were removed. The retina tissue was evaluated for thickness, oxidative stress markers, levels of VEGF and Bax and Bcl-2. In silico docking analysis was done by Autodock Vina tools for target confirmation of MCT.
Results MCT decreased the serum glucose levels and also improved the body weight in diabetic rats. MCT improved thickness and apoptosis of cells. It was also found that MCT decreased oxidative stress, and improved levels of VEGF in retinal tissues of diabetic rats. MCT also exerted anti-apoptotic activity as shown by over-expression of Bcl-2 and suppression of Bax in retinal tissues of rats. Docking study confirmed potential binding affinity of MCT with VEGF.
Conclusions MCT could be a potential therapeutic molecule in treating diabetic retinopathy which could modulate glucose levels, oxidative stress and levels of VEGF in diabetic rats.

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