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首页> 外文期刊>Bioorganic and medicinal chemistry >Mechanism of biochemical action of substituted 4-methylbenzopyran-2-ones. Part II: Mechanism-based inhibition of rat liver microsome-mediated aflatoxin B1-DNA binding by the candidate antimutagen 7,8-diacetoxy-4-methylcoumarin.
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Mechanism of biochemical action of substituted 4-methylbenzopyran-2-ones. Part II: Mechanism-based inhibition of rat liver microsome-mediated aflatoxin B1-DNA binding by the candidate antimutagen 7,8-diacetoxy-4-methylcoumarin.

机译:取代的4-甲基苯并吡喃-2-酮的生化作用机理。第二部分:候选抗突变剂7,8-二乙酰氧基-4-甲基香豆素对大鼠肝微粒体介导的黄曲霉毒素B1-DNA结合的机制抑制作用。

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摘要

7,8-Diacetoxy-4-methylcoumarin (DAMC), with no prerequisite for oxidative biotransformation has been reported to produce suicide inactivation of microsomal cytochrome P-450-catalysed formation of aflatoxin B1-8,9-oxide that binds to DNA. Parenteral administration of DAMC to rats caused significant inhibition of AFB1 binding to hepatic DNA in vivo as well as AFB1-induced micronuclei formation in bone marrow cells. These results highlight the antimutagenic potential of DAMC.
机译:没有氧化生物转化的先决条件的7,8-二乙酰氧基-4-甲基香豆素(DAMC)已被报道能使微粒体细胞色素P-450催化与DNA结合的黄曲霉毒素B1-8,9-氧化物形成自杀而失活。对大鼠肠胃外施用DAMC会在体内显着抑制AFB1与肝DNA的结合以及骨髓细胞中AFB1诱导的微核形成。这些结果突出了DAMC的抗诱变潜力。

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