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Pulsatile shear effects on endothelial hydraulic conductivity: the role of nitric oxide, camp, and cGMP

机译:对内皮液压导电性的脉动剪切效果:一氧化氮,营地和CGMP的作用

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摘要

Atherosclerosis is localized in regions of low mean and highly oscillatory shear (reversing shear) in adult humans and mature animals, and these regions are characterized by elevated endothelial transport rates (1). However, in young animals, endothelial transport rates are highest in regions of high mean shear (unidirectional shear). The adult pattern reverts to the immature pattern in the presence of nitric oxide (NO) inhibitors (1). In the present study we have examined the effects of unidirectional and reversing shear conditions on endothelial transport by measuring the hydraulic conductivity (Lp) of bovine aortic endothelial cell (BAEC) monolayers in vitro. We have also investigated the role of NO and related signaling molecules (adenosine 3,5-cycliephosphate (cAMP) and guanosine 3,5-cyclicphosphate (cGMP)) in mediating the shear-induced response of Lp.
机译:动脉粥样硬化是成年人和成熟动物的低平均和高振荡剪切(逆转剪切)的区域中的局部,这些区域的特征在于内皮传输速率升高(1)。然而,在幼小动物中,高平均剪切区域的内皮传输速率最高(单向剪切)。在存在一氧化氮(NO)抑制剂(1)的情况下,成体图案恢复到未成熟子。在本研究中,我们研究了通过在体外测量牛主动脉内皮细胞(BAEC)单层的液压导电性(LP)对内皮传输的单向和逆转剪切条件的影响。我们还研究了NO和相关信号分子(腺苷3,5-杂磷酸盐(CAMP)和鸟苷3,5-环磷酸(CGMP)的作用在介导LP的剪切诱导的响应中。

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