• Title/Summary/Keyword: carbon tetrachroride

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Taraxacum Mongolicum H. Suppress Hepatoprotective Activity by Increasing Liver Antioxidant Enzyme in Carbon Tetrachloride($CCl_4$)-induced Hepatotoxicity in Rats (흰쥐에서 민들레 추출물이 사염화탄소에 의한 산화적 스트레스의 경감기전)

  • Kim, Sung-Hoon;Choi, Jong-Won
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.24 no.3
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    • pp.439-445
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    • 2010
  • Pretreatment with Taraxacum Mongolicum H(TMH) prior to the administration of on $CCl_4$ significantly prevented the increased serum enzymatic activity of aminotransferase(ALT, AST), gamma-glutamyl transpeptidase(GGT) and bilirubin concentration in dose-dependent manner. In addition, pretreatment with TMH also significantly restored the elevation of hepatic malondialdehyde formation and the depletion of reduced glutathione content in the liver $CCl_4$-intoxicated rats. The restoration of microsomal aniline hydroxylase and aminopyrine N-demethylase activities indicated the improvement in functional status of endoplasmic reticulum. $CCl_4$-induced hepatotoxicity was also essentially prevented, as indicated by a liver histopathologic study. TMH showed antioxidant effects in $FeCl_2$-ascorbate-induced lipid peroxidation in rat liver homogenate and in superoxide radical scavenging activity. Our results suggest that the protective effect of TMH against $CCl_4$-induced hepatotoxicity possibly involve mechanisms related to its ability to block p450-mediated $CCl_4$ bioactivation and free radical scavenging effects.