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Blueberry anthocyanins extract attenuates oxidative stress and angiogenesis on an in vitro high glucose-induced retinopathy model through the miR-33/GLCCI1 axis

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BIOCELL 2024年第8期48卷 1275-1284页

作者： WENBIN LUO YULING ZOU HONGXI WU ZHONGYI YANG ZHIPENG YOU Department of Ophthalmology The Second Affiliated HospitalJiangxi Medical CollegeNanchang UniversityNanchang330000China Department of Ophthalmology in Ocular Fundus Diseases Affiliated Eye Hospital of Nanchang UniversityNanchang330000China Department of Ophthalmic Treatment of Refractive Errors Affiliated Eye Hospital of Nanchang UniversityNanchang330000China

Background:Diabetes retinopathy(DR)is a complication of diabetes that affects patients’*** studies have found blueberry anthocyanins extract(BAE)can inhibit the progression of DR,but its mechanism is not completely ***:To study the role of BAE in diabetes retinopathy,we treated human retinal endothelial cells(HRCECs)with 30 mM high glucose to simulate the microenvironment of diabetes retinopathy and used BAE to intervene the in vitro high glucose-induced retinopathy *** cell viability and apoptosis rates were examined by Cell Counting Kit 8(CCK-8)assay and flow cytometry *** binding sites between miR-33 and glucocorticoid-induced transcript 1(GLCCI1)were assessed by luciferase reporter *** neovascularization and oxidative stress contribute to diabetic *** tubule formation assay was applied to detect the retinal *** oxidative stress in the HRCECs was manifested by the reactive oxygen species(ROS)level,the malondialdehyde(MDA)level,and the superoxide dismutase(SOD)***:Compared with HRCECs cells cultured under normal conditions,high glucose(HG)can induce oxidative stress in HRCRCs,specifically manifested in the increase of ROS and MDA levels,and the decrease of SOD *** relieved the tubule formation in n the *** also relieved the ROS and MDA levels and increased the SOD *** reporter assay revealed that GLCCI1 is a target molecule downstream of *** HRCEC,BAE significantly inhibited the expression of miR-33 induced by ***-33 mimic inhibited the BAE’s effects on oxidative stress and angiogenesis in an in vitro high glucose-induced retinopathy ***:BAE alleviated the oxidative stress and microangiogenesis of HRCEC by regulating the miR-33/GLCCI1 axis.

关键词： Blueberry anthocyanins extract Diabetic retinopathy Oxidative stress Retinal neovascularization miR-33 clcci1

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