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pubmed-article:15231039pubmed:abstractTextThe protective effect of acteoside against membrane lipid oxidation and free radical-mediated impairment of endothelial function was investigated. Results showed that iron-mediated oxidative modification of the cell membrane in cultured bovine pulmonary endothelial cells (PAECs) was significantly attenuated by acteoside as measured by thiobarbituric acid-reactive substances (TBARS). Fenton's reagent (H2O2/Fe2+) was used to generate hydroxyl radicals (*OH) and induce oxidative stress. Acteoside not only effectively minimized the loss of cell viability induced by hydroxyl radicals in cultured endothelial cells but also countered the free radical-induced destruction of the endothelium-dependent relaxation to acetylcholine in rat aorta. Furthermore, acteoside showed a dose-dependent scavenging effect of 1,1-diphenyl-2-picryl-hydrazyl (DPPH) radicals and appeared to be the most efficient in comparison with the four reference compounds (alpha-tocopherol, vitamin C, probucol and resveratrol). These data suggested that acteoside protects the cell from oxidative stress and that scavenging of free radicals could be a key mechanism contributing to the cytoprotective effect of acteoside.lld:pubmed
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pubmed-article:15231039pubmed:authorpubmed-author:ChiouWen...lld:pubmed
pubmed-article:15231039pubmed:authorpubmed-author:LinLie...lld:pubmed
pubmed-article:15231039pubmed:authorpubmed-author:ChenChieh...lld:pubmed
pubmed-article:15231039pubmed:copyrightInfoCopyright 2004 The Authorslld:pubmed
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pubmed-article:15231039pubmed:pagination743-8lld:pubmed
pubmed-article:15231039pubmed:dateRevised2009-11-19lld:pubmed
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pubmed-article:15231039pubmed:articleTitleActeoside protects endothelial cells against free radical-induced oxidative stress.lld:pubmed
pubmed-article:15231039pubmed:affiliationNational Research Institute of Chinese Medicine, NO. 155-1, SEC. 2, Li-Nung Street, Shipai, Taipei, Taiwan. wfchiou@cma23@.nricm.edu.twlld:pubmed
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