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Effect of MDR1 polymorphic expression on oral disposition of cyclosporine A
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- Author:
- No author available
- Journal Title:
- ACTA PHARMACEUTICA SINICA
- Issue:
- 12
- DOI:
- 10.3321/j.issn:0513-4870.2004.12.003
- Key Word:
- 环孢素A;P-糖蛋白;多药耐药基因;非线性混合效应模型
Abstract： 目的非线性混合效应模型(NONMEM)考察中国健康人多药耐药基因(MDR1)中26外显子的C3435T多态性与环孢素A(CsA)药代动力学特性间的关系.方法HPLC法测定20名健康男性单次口服CsA微乳溶液制剂500 mg后24 h内不同时间点的药物浓度.MDR1的基因多态性测定采用DNA限制性片段长度多态性法,并用基因测序法验证.数据处理与模型拟合采用NONMEM法.结果中国健康人中含MDR1 C3435T CC或CT型的相对生物利用度较TT型高40%.结论MDR1中C3435T多态性是个体间CsA相对生物利用度差异的影响因素.
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