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- W2783999640 abstract "Recently, we reported that angiotensin II (Ang II)-induced hypertension is mediated by group IV cytosolic phospholipase A2α (cPLA2α) via production of prohypertensive eicosanoids. Since Ang II increases blood pressure (BP) via its action in the subfornical organ (SFO), it led us to investigate the expression and possible contribution of cPLA2α to oxidative stress and development of hypertension in this brain area.Adenovirus (Ad)-green fluorescence protein (GFP) cPLA2α short hairpin (sh) RNA (Ad-cPLA2α shRNA) and its control Ad-scrambled shRNA (Ad-Scr shRNA) or Ad-enhanced cyan fluorescence protein cPLA2α DNA (Ad-cPLA2α DNA) and its control Ad-GFP DNA were transduced into SFO of cPLA2α+/+ and cPLA2α-/- male mice, respectively. Ang II (700 ng/kg/min) was infused for 14 days in these mice, and BP was measured by tail-cuff and radio telemetry. cPLA2 activity, reactive oxygen species production, and endoplasmic reticulum stress were measured in the SFO.Transduction of SFO with Ad-cPLA2α shRNA, but not Ad-Scr shRNA in cPLA2α+/+ mice, minimized expression of cPLA2α, Ang II-induced cPLA2α activity and oxidative stress in the SFO, BP, and cardiac and renal fibrosis. In contrast, Ad-cPLA2α DNA, but not its control Ad-GFP DNA in cPLA2α-/- mice, restored the expression of cPLA2α, and Ang II-induced increase in cPLA2 activity and oxidative stress in the SFO, BP, cardiac, and renal fibrosis.These data suggest that cPLA2α in the SFO is crucial in mediating Ang II-induced hypertension and associated pathogenesis. Therefore, development of selective cPLA2α inhibitors could be useful in treating hypertension and its pathogenesis." @default.
- W2783999640 created "2018-01-26" @default.
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- W2783999640 date "2018-01-12" @default.
- W2783999640 modified "2023-10-12" @default.
- W2783999640 title "Brain Cytosolic Phospholipase A2α Mediates Angiotensin II-Induced Hypertension and Reactive Oxygen Species Production in Male Mice" @default.
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- W2783999640 doi "https://doi.org/10.1093/ajh/hpy009" @default.
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