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• W3040977703 abstract "Diabetic retinopathy is a prevalent microvascular complication characterized by apoptotic vascular cell loss in the retina. Previous studies have shown that high glucose (HG)-induced mitochondrial fragmentation plays a critical role in promoting retinal vascular cell apoptosis. Here, we investigated whether downregulation of mitochondrial fission genes, Fis1 and Drp1, which are overexpressed in HG condition, prevents mitochondrial fragmentation, preserves mitochondrial function, and protects retinal endothelial cells from apoptosis. Rat retinal endothelial cells (RRECs) were grown in normal (5 mM glucose) or HG (30 mM glucose) medium; in parallel, cells grown in HG medium were transfected with either Fis1 siRNA or Drp1 siRNA, or both siRNAs in combination, or scrambled siRNA as control. Live-cell confocal imaging showed decreased mitochondrial fission in cells transfected with Fis1 siRNA or Drp1 siRNA concomitant with reduced TUNEL-positive cells and a decrease in the expression of pro-apoptotic proteins, Bax and cleaved caspase 3, under HG condition. Importantly, the combined siRNA approach against Fis1 and Drp1 prevented HG-induced changes in the oxygen consumption rate (OCR) and extracellular acidification rate (ECAR). The findings from this study indicate that reducing HG-induced overexpression of mitochondrial fission genes preserves mitochondrial morphology and prevents retinal vascular cell apoptosis associated with diabetic retinopathy." @default.
• W3040977703 created "2020-07-16" @default.
• W3040977703 creator A5009364745 @default.
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• W3040977703 date "2020-07-10" @default.
• W3040977703 modified "2023-10-18" @default.
• W3040977703 title "Downregulation of Drp1 and Fis1 Inhibits Mitochondrial Fission and Prevents High Glucose-Induced Apoptosis in Retinal Endothelial Cells" @default.
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• W3040977703 doi "https://doi.org/10.3390/cells9071662" @default.
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• W3040977703 hasPublicationYear "2020" @default.
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