overexpression of Sirt1 prevented hydrogen peroxide-induced - TopicsExpress

overexpression of Sirt1 prevented hydrogen peroxide-induced SA-beta-gal activity, morphological changes and deranged expression of PAI-1 and eNOS. These results showed that Sirt1 inhibition increased p53 acetylation and induced premature senescence-like phenotype in parallel with increased PAI-1 and decreased eNOS expression. Our data suggest that Sirt1 may exert protective effects against endothelial dysfunction by preventing stress-induced premature senescence and deranged expression of PAI-1 and eNOS. ncbi.nlm.nih.gov/pubmed/17916362

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