Oxidative mechanisms in beta-amyloid cytotoxicity

被引:48
作者
Davis, JB
机构
来源
NEURODEGENERATION | 1996年 / 5卷 / 04期
关键词
beta-amyloid; hydrogen peroxide; neurotoxicity; oxidation;
D O I
10.1006/neur.1996.0060
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Amyloid beta-peptide has been demonstrated to be toxic for primary and clonal neuronal cell lines in vitro. Oxidative mechanisms have been implicated in this pathway at several points, including the aggregation of beta-amyloid necessary for cytotoxic activity, generation of radicals by the peptide itself, and intracellularly in response to toxic beta-amyloid peptides. Supporting an oxidative hypothesis are the observations that cells mount a stress response to beta-amyloid similar to that seen in response to oxidative stress and that they may be rescued from cytotoxicity by antioxidants, inhibitors of oxidative enzyme metabolism, and overexpression of antioxidant enzymes. Although the source(s) of the oxygen radicals has not yet been identified, altered antioxidant enzyme levels and oxidative by-products in Alzheimer's disease brain samples relate the in vitro studies to the human disease. (C) 1996 Academic Press Limited
引用
收藏
页码:441 / 444
页数:4
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