首页> 外文期刊>The Tohoku Journal of Experimental Medicine >Hypoxic effects on cholesterol metabolism of cultured rat aortic and brain microvascular endothelial cells, and aortic vascular smooth muscle cells.
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Hypoxic effects on cholesterol metabolism of cultured rat aortic and brain microvascular endothelial cells, and aortic vascular smooth muscle cells.

机译:对培养大鼠主动脉和脑微血管内皮细胞的胆固醇代谢和主动脉血管平滑肌细胞的缺氧作用。

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摘要

We investigated hypoxic effects on cholesterol metabolism in cultured brain microvascular endothelial cells (BEC), aortic endothelial cells (AEC) and aortic vascular smooth muscle cells (VSMC) from rat. In control conditions, acid lipase activities in BEC and AEC were higher than that in VSMC. Acyl-Coenzyme A: cholesterol acyltransferase (ACAT) activities in control cells of BEC and AEC were lower than that of VSMC. Hypoxic treatment caused decreased acid lipase activity. ACAT activity decreased in VSMC. High pressure lipid chromatography (HPLC) study showed that hypoxia caused decreased contents of cholesterol and cholesteryl esters especially in AEC. We suggested that there is different cholesterol metabolism in the hypoxic treatment among endothelial cells and smooth muscle cells.
机译:我们研究了培养的脑微血管内皮细胞(BEC),主动脉内皮细胞(AEC)和大鼠主动脉血管平滑肌细胞(VSMC)中的胆固醇代谢对大鼠的缺氧作用。 在对照条件下,BEC和AEC中的酸性脂肪酶活性高于VSMC。 酰基 - 辅酶A:胆固醇酰基转移酶(ACAT)对照细胞和AEC中的活性低于VSMC。 缺氧处理引起酸性脂肪酶活性降低。 VSMC中的ACAT活性减少。 高压脂质色谱(HPLC)研究表明,缺氧引起胆固醇和胆固醇酯的含量下降,特别是在AEC中。 我们建议在内皮细胞和平滑肌细胞中存在不同的胆固醇代谢。

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