期刊
EUROPEAN JOURNAL OF PHARMACOLOGY
卷 650, 期 2-3, 页码 544-549出版社
ELSEVIER
DOI: 10.1016/j.ejphar.2010.10.028
关键词
Amyloid-beta peptide; Neuroblastoma SH-SY5Y cell; Superoxide anion generation; Hydroxyl radical generation; Apoptosis; Alzheimer's disease
资金
- Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT) [21240050]
- Grants-in-Aid for Scientific Research [21240050] Funding Source: KAKEN
Amyloid-beta peptide (A beta) has been implicated in the pathogenesis of Alzheimer's disease (AD). It can cause cell death in Alzheimer's disease by evoking a cascade of oxidative damage to neurons. Antioxidant compounds may help to elucidate and develop a treatment for Alzheimer's disease. In the present study, we investigated the protective effect of TEMPOL (4-hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxy), a cyclic nitroxide which is particularly effective at reducing oxidative injury, on A beta(1-42)-induced SH-SY5Y cell toxicity. Exposure of cells to 20 mu M A beta(1-42) for 48 h caused viability loss and apoptotic increase, and pre-treatment with TEMPOL for 24 h significantly reduced the viability loss and apoptotic rate. In addition, TEMPOL inhibited A beta(1-42)-induced superoxide anion generation and hydroxyl radical generation to a striking degree. Based on these results, it is concluded that TEMPOL effectively protects SH-SY5Y cells against S-amyloid-induced damage by suppressing the generation of reactive oxygen species especially, superoxide anion. (C) 2010 Elsevier B.V. All rights reserved.
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