Cytoprotective effect of reduced glutathione in hydrogen peroxide-induced endothelial cell injury

S. H. Chen, H. L. Wu, M. T. Lin, C. J. Jen, L. Y C Wing, H. Y. Lei, C. J. Tsao, W. C. Chang

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11 引文 斯高帕斯(Scopus)


The kinetic effects of hydrogen peroxide (H2O2) on cultured endothelial cells isolated from bovine carotid artery were studied. The cytoprotective effects of glutathione (GSH) on H2O2-induced cell injury were also investigated. H2O2-induced a dose- and time-dependent cell injury in cultured endothelial cells. H2O2-induced cell injury was blocked by simultaneous treatment by catalase, but not by superoxide dismutase. H2O2 also induced endogenous PGI2 biosynthesis, and the maximum PGI2 production was reached after 1 h treatment. Stimulation of PGI2 production was parallel with arachidonate release from H2O2-treated cells. However the prostaglandin biosynthesis enzyme activity in cells was inhibited by H2O2 treatment. When the cells were treated with GSH, the intracellular GSH reached a plateau after 3 h treatment. Both H2O2-induced cell injury and PGI2 production were significantly inhibited by the 3 h pretreatment with GSH. The cytoprotective effect of GSH was completely inhibited by buthionine sulfoximine which is a specific inhibitor of γ-glutamylcysteine synthetase. The results indicate that the cytoprotective effect of GSH on H2O2-induced cell injury in cultured bovine carotid artery endothelial cells depends on the increase in intracellular GSH content.

頁(從 - 到)299-305
期刊Prostaglandins Leukotrienes and Essential Fatty Acids
出版狀態已發佈 - 1992

ASJC Scopus subject areas

  • 臨床生物化學
  • 內分泌學、糖尿病和代謝


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