한국식품영양과학회지 (Journal of the Korean Society of Food Science and Nutrition)

  • 제22권6호
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  • Pages.702-708
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  • 1993
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  • 1226-3311(pISSN)
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  • 2288-5978(eISSN)
한국식품영양과학회 (The Korean Society of Food Science and Nutrition)
권호 표지

유기게르마늄(GE-132)이 Bromobenzene의 대사계에 미치는 영향

Effect of GE-132 on the Hepatic Bromobenzene Metabolizing Enzyme System in Rats

  • 발행 : 1993.12.01
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초록

Bromobenzene투여시 GE-132의 해독기전을 추구할 목적으로 epoxide생성계와 해독계 효소 및 glutathione 관련 효소계의 활성에 GE-132가 어떤 영향을 주는가를 검토하여 다음과 같은 실험 결과를 얻었다. GE-132(100mg/kg)의 전처리로 cytochrome P-450, amino=pyrine demethylase 및 aniline hydroxylase와 해독계 효소인 epoxide hydrolase활성에는 영향을 미치지 않았으나, glutathions S-transferase활성은 증가 하였다. Bromobenzene(460mg/kg)을 주사하였을때 glutathione S-transferase의 활성이 현저히 감소되던 것이 GE-132의 투여로 대조군 수준으로 증가되었다. 조직내 glutathione의 함량변동도 bromobenzene 투여로 감소되던 것이 GE-132의 전처리로 bromobenzene단독 투여군보다 증가되었으며 ${\gamma}-glutamylcystein$ synthtase의 활성은 각 실험군에서 별다른 영향이 없는데 비해 glutathione reductase의 활성은 bromobenzene투여로 억제 되던 것이 GE-132의 전처리로 대조군 수준으로 활성을 유지하고 있었다.

The study was attempted to elucidate the mechanism of GE-132(100mg/kg, p.o. for 6 weeks) on the metabolism of bromobenzene (460mg/kg, i.p. bid, for 2 days), which has potent carcinogenicity, mutagenicity and hepatotoxicity. It showed that activities of cytochrome p-450, aminopyrine demethylase and aniline hydroxylase, which have epoxide generating property, were not changed by GE-132 treatment. On the other hand, epoxide hydrolase was not changed but that glutathione S-transferase was significantly increased by GE-132 treatment. And also ${\gamma}-glutamylcysteine$ synthetase was not changed following the GE-132 treatment, but the activity of glutathione reductase was significantly increased. The level of hepatic glutathione which was decreased by bromobenzene recovered markedly by GE-132 pretreatment. It is concluded that the mechanism for the observed effect of GE-132 on bromobenzene metabolism is due to the induction of glutathione S-transferase.

키워드

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