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• W2014521862 abstract "There is evidence accumulating that brain microvasculature is involved critically in oxidative stress-mediated brain damage. Cultured cerebral microvascular endothelial cells were used to demonstrate the cytotoxic and genotoxic effects elicited by hypoxia/reoxygenation and DMNQ treatment in vitro. In addition, the effect of glucose deprivation during oxidative insult was assessed. The parameters determined were: 1) chromosomal aberrations; 2) induction of micronuclei; and 3) apoptosis. Our results indicate that both the exposure of the cerebral endothelial cells to 24 hr of hypoxia followed by 4 hr of reoxygenation, and treatment with the redox cycling quinone DMNQ, increased markedly the occurrence of chromosomal aberrations and micronuclei. It was found that expression of p53 was induced by oxidative stress, particularly when glucose had been omitted from the culture medium. Aglycemic culture conditions in general exacerbated the cytotoxic effects of oxidative insults, as evidenced by the increase in apoptotic cells and the decrease in the mitotic index. Interestingly, neither an elevation of cell lysis nor an increase in necrosis has been observed during our experiments. In summary, our data indicate that oxidative stress exerts considerable genotoxic and cytotoxic effects on cerebral endothelial cells, which might contribute to the progression of tissue damage in the central nervous system." @default.
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• W2014521862 date "2003-05-01" @default.
• W2014521862 modified "2023-09-30" @default.
• W2014521862 title "Oxidative stress in cultured cerebral endothelial cells induces chromosomal aberrations, micronuclei, and apoptosis" @default.
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• W2014521862 doi "https://doi.org/10.1002/jnr.10582" @default.
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