생명과학회지 (Journal of Life Science)

  • 제13권5호
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  • Pages.626-633
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  • 2003
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  • 1225-9918(pISSN)
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  • 2287-3406(eISSN)
한국생명과학회 (Korean Society of Life Science)
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Bromate가 흰쥐의 장기 Glutathione 함량에 미치는 영향

Effects of Bromate on the Glutathione Synthesis in Various Organs of Rats

  • 김나영 (경성대학교 환경문제연구소) ;
  • 강혜옥 (경성대학교 환경문제연구소) ;
  • 이무강 (경성대학교 환경문제연구소) ;
  • 최종원 (경성대학교 환경문제연구소)
  • 발행 : 2003.10.01
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초록

백서에 bromate의 장기간 섭취로 간 및 신장의 glutathion량이 감소되는데, 간과 신장은 유사한 감소양상을 나타냈고, 폐 및 혈액에서는 감소하는 경향은 있었으나 통계적인 유의성은 없었다. Bromate 섭취로$\gamma-glutamyl$-cysteine synthetase와 $\gamma-glutamyl$ transpeptidase 활성이 감소되었다. 따라서 간과 신장의 glutathione 감소로 $\gamma-glutamyl$cysteine synthetase 활성이 감소됨으로서 glutathione 합성저하에 의해 나타난 결과로 생각되고, 폐에서 $\gamma-glutamyl$cysteine synthetase 및 $\gamma-glutamyl$- transpep-tidase 활성에는 별다른 영향이 없었다. 혈액에서는$\gamma-glutamyl$cysteine synthetase와 $\gamma-glutamyl$ transpeptidase 활성 감소로 glutathione의 혈액내로 유입과 타장기로 유출이 모두 저하되어 glutathione량의 변화가 없는 것으로 생각된다. Bromate에 의한 장기내 glutathione량 감소는 유리기 소거기능이 저하되어 bromate에 의해서 생성된 유리기 제거가 미흡할 것으로 생각되므로 bromate 독성의 한 요인이 될 것으로 추측된다.

The effects of bromate administration on glutathione were studied in rats. The contents of glutathione in the liver and kidney were significantly decreased but the alteration was not significant in lung and blood by bromate adminstration. The decrease occurred without concomitant increases in oxidized glutathione (GSSG) or in the GSSG/GSH＋GSSG ratio. The activities of $\gamma-glutamyl$ cysteine synthetase in the liver and kidney were decreased by bromate administration. $\gamma-Glutamyl$ transpeptidase activities was significantly decreased in the kidney and not significantly decreased in the lung of bromate treated-rats. These results suggest that the decreased synthesis of glutathione by bromate may be an important reason for the decreased level of glutathione in the liver and kidney, thus the decreased glutathione transport would be a factor on the changes of glutathione contents in bromate-treated rats.

키워드

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