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논문 기본 정보

자료유형
학술저널
저자정보
Lee, Ki-Mo (Department of Biomedicinal Science & Biotechnology, Pai-Chai University) Kang, Hyung-Sik (School of Biological Sciences and Technology, Chonnam National University) Yun, Chul-Ho (School of Biological Sciences and Technology, Chonnam National University) Kwak, Hahn-Shik (Department of Biomedicinal Science & Biotechnology, Pai-Chai University)
저널정보
한국응용약물학회 Biomolecules & Therapeutics(구 응용약물학회지) Biomolecules & therapeutics 제20권 제5호
발행연도
2012.1
수록면
492 - 498 (7page)

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Phytochemicals have been known to exhibit potent antioxidant activity. This study examined cytoprotective effects of phytochemicals including quercetin, catechin, caffeic acid, and phytic acid against oxidative damage in SK-Hep-1 cells induced by the oxidative and non-oxidative metabolism of ethanol. Exposure of the cells to excess ethanol resulted in a significant increase in cytotoxicity, reactive oxygen species (ROS) production, lipid hydroperoxide (LPO), and antioxidant enzyme activity. Excess ethanol also caused a reduction in mitochondrial membrane potential (MMP) and the quantity of reduced glutathione (GSH). Co-treatment of cells with ethanol and quercetin, catechin, caffeic acid and phytic acid significantly inhibited oxidative ethanol metabolism-induced cytotoxicity by blocking ROS production. When the cells were treated with ethanol after pretreatment of 4-methylpyrazole (4-MP), increased cytotoxicity, ROS production, antioxidant enzyme activity, and loss of MMP were observed. The addition of quercetin, catechin, caffeic acid and phytic acid to these cells showed suppression of non-oxidative ethanol metabolism-induced cytotoxicity, similar to oxidative ethanol metabolism. These results suggest that quercetin, catechin, caffeic acid and phytic acid have protective effects against ethanol metabolism-induced oxidative insult in SK-Hep-1 cells by blocking ROS production and elevating antioxidant potentials.

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