首页> 外文会议>ASME summer bioengineering conference;SBC2010 >DIFFERENTIAL RESPONSES OF ENDOTHELIAL CELLS TO POSITIVE AND NEGATIVE WALL SHEAR STRESS GRADIENTS
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DIFFERENTIAL RESPONSES OF ENDOTHELIAL CELLS TO POSITIVE AND NEGATIVE WALL SHEAR STRESS GRADIENTS

机译:内皮细胞对正和负壁剪切应力梯度的不同反应

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Cerebral aneurysms tend to develop at bifurcation apices or the outer side of curved vessels where the blood vessel wall experiences complex hemodynamics. In vivo studies have recently revealed that the initiation of cerebral aneurysms is confined to a well-defined hemodynamic microenvironment. Specifically aneurysms form where the vessel wall experiences high fluid shear stress (wall shear stress, WSS) and flow is accelerating, so that the wall is exposed to a positive spatial gradient in the fluid shear stress (wall shear stress gradient, WSSG)[1,2]. Closer examination of such in vivo studies reveals that exposure of the vessel wall to equally high WSS in the presence of decelerating flow, that is, negative WSSG, does not result in aneurysm-like remodeling.
机译:脑动脉瘤倾向于在分叉点或弯曲血管的外侧发展,血管壁会经历复杂的血液动力学。最近的体内研究表明,脑动脉瘤的发作仅限于明确的血液动力学微环境。尤其是在动脉瘤形成的地方,血管壁承受较高的流体剪切应力(壁剪切应力,WSS),并且流动加速,因此壁在流体剪切应力(壁剪切应力梯度,WSSG)中处于正的空间梯度[1]。 ,2]。对这类体内研究的仔细检查表明,在血流减速的情况下,即WSSG阴性,血管壁暴露于同样高的WSS不会导致动脉瘤样重塑。

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  • 会议地点 Naples, FL(US);Naples, FL(US)
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    Toshiba Stroke Research Center State University of New York at Buffalo Buffalo NY;

    Neuroscience Program State University of New York at Buffalo Buffalo NY;

    Department of Pathology and Anatomical Sciences State University of New York at Buffalo Buffalo NY;

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