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자료유형
학술저널
저자정보
저널정보
한국독성학회 Toxicological Research Journal of Toxicology and Public Health Vol.15 No.2
발행연도
1999.6
수록면
183 - 190 (8page)

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The effects of diethylnitrosamine (DEN A) on the activities of various enzymes involved in aldehyde metabolism were examined in cultured rat liver clone 9 cell. The enzymes included alcohol dehydrogenase(ADH), aldehyde dehydrogenase (ALDH) , glutathione-S-transferase (GST) and catalase. The enzyme activity changes induced by various concentrations of DENA and repetitive treatment of fixed concentrations of DENA were analyzed in terms of specific activity and activity staining on the gel. About 2.5 times higher ADH activity was found when the cell was treated with DENA from 1 to 7 times. However, about 40% of ADH activity was increased at 40 mM DENA and then decreased thereafter as the doses of DENA were increased. On the other hand, the specific activity of ALDH was increased rapidly reaching to 2.5 times higher activity in concentration dependent and repetitive treatment of DENA. In case of GST level, only slight increases occurred with concentration dependent and repetitive treatment of DENA. Maximum ten folds increase of lipid peroxide level occurred in the DENA treated cell, whereas the increase of lipid peroxidation was not correlated with that of catalase activity. Specific activities of ADH, ALDH and GST in clone 9 cell were also compared with those of various human cancer cell lines.

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ABSTRACT

Ⅰ. 서론

Ⅱ. 재료 및 방법

Ⅲ. 결과 및 고찰

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