环磷酰胺与异环磷酰胺致肝毒性机制的比较

被引:21
作者
施畅
廖明阳
机构
[1] 军事医学科学院毒物药物研究所!北京
关键词
环磷酰胺; 异环磷酰胺; 巯基; P450; 肝脏;
D O I
10.16421/j.cnki.1002-3127.2000.02.013
中图分类号
R99 [毒物学(毒理学)];
学科分类号
100405 ;
摘要
目的 为阐明环磷酰胺 (CP)和异环磷酰胺 (IFO)肝脏毒作用机制。方法 给大鼠腹腔注射CP或IFO 40mg·kg-1·d-1连续 5d ,观察停药后 1、4、7、10d血清生化指标、肝组织中丙二醛含量、巯基状态和细胞色素P45 0含量的变化。结果 两组动物血浆生化指标和肝组织丙二醛含量没有显著变化 ,而肝组织总巯基、非蛋白巯基、蛋白结合巯基和细胞色素P45 0含量下降 ,蛋白巯基的消耗与总巯基含量下降相关。但两药引起上述变化的程度不同。肝微粒体总P45 0含量的变化趋势与巯基相似 ,CP组细胞色素P45 0含量给药结束后 1、4、7、10d分别下降了 19 2 %、2 6 8%、6 1 1%、15 2 % ,IFO组细胞色素P45 0仅在 1、7d分别下降 2 0 7%和 40 2 %。结论 CP引起肝脏巯基和细胞色素P45 0含量下降程度明显强于 1FO ,表明这两种药物的差异可能与其毒性不同有关。
引用
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页码:99 / 102
页数:4
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