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논문 기본 정보

자료유형
학술저널
저자정보
송효인 (대구한의대학교 한의과대학 생리학교실) 김광중 (대구한의대학교 한의과대학 생리학교실)
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대한동의생리학회 동의생리병리학회지 동의생리병리학회지 제21권 제1호
발행연도
2007.1
수록면
190 - 198 (9page)

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Alzheimer's disease, a representative neurodegenerative disorder, is characterized by the presence of senile plaques and neurofibrillary tangles accompanied by neuronal damages. b-Amyloid peptide is considered to be responsible for the formation of senile plagues that accumulate in the brains of patients with Alzheimer's disease. There has been compelling evidence supporting that b-amyloid-induced cytotoxicity is mediated through generation of reactive oxygen species. In this study, we have investigated the possible protective effect of Rehmannia glutihosaagainst b-amyloid-induced oxidative ceil death in cultured human neuroblastoma SH-SY5Y cells. SH-SY5Y cells treated with b-amyloid underwent apoptotic death as determined by morphological features and positive in situterminal end-labeling (TUNEL staining). Rehmannia glutinosawater extract, wine, and vinegar pretreatments attenuated b-amyloid-induced cytotoxicity and apoptosis. Rehmannia glutinosa vinegar exhibited maximum protective effect by increasing the expression of anti-apoptotic protein, Bcl-2. in addition to oxidative stress, b-amyloid-treatment caused nitrosative stress via marked increase in the levels of nitric oxide, which was effectively blocked by Rehmannia glutinosa. To further explore the possible molecular mechanisms underlying the protective effect of Rehmannia glutinosa, we assessed the mRNA expression of cellular antioxidant enzymes. Treatment of Rehmannia glutinosa vinegar led to up-regulation of heme oxygemase-1 and catalase. These results suggest that Rehmannia glutinosa could modulate oxidative neuronal cell death caused by b-amyloid and may have preventive or therapeutic potential in the management of Alzheimer's disease. Particularly, Rehmannia glutinosa vinegar can augment cellular antioxidant capacity, there by exhibiting higher neuroprotective potential.

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