Title : Laminar shear stress prevents simvastatin-induced adhesion molecule expression in cytokine activated endothelial cells.

Pub. Date : 2010 Dec 15

PMID : 20863785






6 Functional Relationships(s)
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1 In this study, the effect of simvastatin on vascular cell adhesion molecule-1 (VCAM-1) and intercellular adhesion molecule-1 (ICAM-1) expression was evaluated in human abdominal aortic endothelial cells (HAAEC) conditioned with various levels of laminar wall shear stress with or without tumor necrosis factor alpha (TNFalpha). Simvastatin vascular cell adhesion molecule 1 Homo sapiens
2 In this study, the effect of simvastatin on vascular cell adhesion molecule-1 (VCAM-1) and intercellular adhesion molecule-1 (ICAM-1) expression was evaluated in human abdominal aortic endothelial cells (HAAEC) conditioned with various levels of laminar wall shear stress with or without tumor necrosis factor alpha (TNFalpha). Simvastatin vascular cell adhesion molecule 1 Homo sapiens
3 In static culture, simvastatin potentiated the TNFalpha-induced increase in VCAM-1 and ICAM-1 mRNA but not total protein at 24 h. Mevalonate, a precursor to cholesterol biosynthesis, eliminated the effect of simvastatin. Simvastatin vascular cell adhesion molecule 1 Homo sapiens
4 A shear stress of 12.5 dyn/cm2 eliminated the increase in VCAM-1 by simvastatin, while 25 dyn/cm2 was needed for ICAM-1. Simvastatin vascular cell adhesion molecule 1 Homo sapiens
5 We conclude that simvastatin enhances VCAM-1 and ICAM-1 gene expression in TNFalpha-activated endothelial cells through inhibition of HMG-CoA reductase. Simvastatin vascular cell adhesion molecule 1 Homo sapiens
6 High levels of laminar shear stress prevented the upregulation of VCAM-1 and ICAM-1 by simvastatin suggesting that an induction of cell adhesion molecules by statins may not occur in endothelial cells exposed to shear stress from blood flow. Simvastatin vascular cell adhesion molecule 1 Homo sapiens