KMID : 1161420140170111222
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Journal of Medicinal Food 2014 Volume.17 No. 11 p.1222 ~ p.1231
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Ligularia fischeri Extract Protects Against Oxidative-Stress-Induced Neurotoxicity in Mice and PC12 Cells
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Choi Soo-Jung
Kim Jae-Kyeom Suh Soo-Hwan Kim Cho-Rong Kim Hye-Kyung Kim Chang-Ju Park Gwi-Gun Park Cheung-Seog Shin Dong-Hoon
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Abstract
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Alzheimer's disease (AD) is pathologically characterized by the presence of amyloid plaques in brain and the overproduction of amyloid beta (A¥â), leading to learning and memory impairment and intense oxidative stress. In this study, the protective effect of Ligularia fischeri extract was investigated using PC12 cells. L. fischeri extract attenuated hydrogen-peroxide-induced DNA fragmentation in cells. In vivo behavioral tests were performed to examine the effects of the extract on amyloid-¥â peptide1-42-induced impairment of learning and memory in mice. A diet containing the extract increased alternation behaviors in the Y-maze test and step-through latency of passive avoidance task. Moreover, we found that consumption of the extract decreased lipid peroxidation in a biochemical study of brain tissue in mice. High-performance liquid chromatography was used to identify the active compounds in the extract. These results suggest that L. fischeri extract could be protective against A¥â-induced neurotoxicity, possibly due to the antioxidative capacity of its constituent, 3-O-caffeoylquinic acid.
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KEYWORD
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3-O-caffeoylquinic acid, amyloid beta peptide, Ligularia fischeri, oxidative stress
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