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- W3152158555 abstract "Cystic fibrosis transmembrane conductance regulator (CFTR) acts as a cAMP-dependent chloride channel, has been studied in various types of cells. CFTR is abundantly expressed in vascular smooth muscle cells and closely linked to vascular tone regulation. However, the functional significance of CFTR in basilar vascular smooth muscle cells (BASMCs) remains elusive. Accumulating evidence has shown the direct role of CFTR in cell apop- tosis that contributes to several main pathological events in CF, such as inflammation, lung injury and pancreatic insufficiency. We therefore investigated the role of CFTR in BASMC apoptotic process induced by hydrogen per- oxide (H2O2). We found that H2O2-induced cell apoptosis was parallel to a significant decrease in endogenous CFTR protein expression. Silencing CFTR with adenovirus- mediated CFTR specific siRNA further enhanced H2O2- induced BASMC injury, mitochondrial cytochrome c release into cytoplasm, cleaved caspase-3 and -9 protein expression and oxidized glutathione levels; while decreased cell viability, the Bcl-2/Bax ratio, mitochondrial membrane potential, total glutathione levels, activities of superoxide dismutase and catalase. The pharmacological activation of CFTR with forskolin produced the opposite effects. These results strongly suggest that CFTR may modulate oxidative stress-related BASMC apoptosis through the cAMP- and mitochondria-dependent pathway and regulating endogenous antioxidant defense system." @default.
- W3152158555 created "2021-04-13" @default.
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- W3152158555 date "2014-01-01" @default.
- W3152158555 modified "2023-09-23" @default.
- W3152158555 title "Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) prevents apoptosis induced by hydrogen peroxide in basilar artery smooth muscle cells" @default.
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