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Effect of Vitamin E Against the Cytotoxicity of Reactive Oxygen Species on Vascular Endothelial Cells

Kwon O-Yu    (Department of Anatomy, College of Medicine, Chungnam National University   ); Park Seung-Taeck    (School of Medicine, Wonkwang University  );
  • 초록

    Reactive oxygen species (ROS) is one of the main pathological factors in endothelial disorder. For example, an atherosclerosis is induced by the dysfunction of vascular endothelial cells. The dysfunction of vascular endothelial cells cascades to secrete intercellular adhesion molecule (ICAM)-l substance by ROS. Therefore, The ROS is regraded as an important factor of the injury of vascular endothelial cells and inducement of atherosclerosis. Oxygen radical scavengers playa key role to prevention of many diseases mediated by oxidative stress of ROS. In this study, the toxic effect of ROS on vascular endothelial cells and the effect of antioxidant, vitamin E on bovine pulmonary vascular endothelial cell line (BPVEC) treated with hydrogen peroxide were examined by the colorimetric assay. ROS decreased remarkably cell viability according to the dose- and time-dependent manners. In protective effect of vitamin E on BPVEC treated with hydrogen peroxide, vitamin E increased remarkably cell viability compared with control after BPVEC were treated with $15{\mu}M$ hydrogen peroxide for 6 hours. From these results, it is suggested that ROS has cytotoxicity on cultured BPVEC and oxygen radical scavenger such as vitamin E is very effective in prevention of oxidative stress-induced cytotoxicity.


  • 주제어

    Reactive oxygen species (ROS) .   Bovine pulmonary vascular endothelial cell line (BPVEC) .   Antioxidant .   Cytotoxicity.  

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