通过CD4细胞计数测定津巴布韦hiv感染者CYP2B6和CYP1A2遗传变异对奈韦拉平血药浓度和药效学的影响

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Mhandire D, Lacerda M, Castel S, Mhandire K, Zhou D, Swart M, Shamu T, Smith P, Musingwini T, Wiesner L, Stray-Pedersen B, Dandara C

通过CD4细胞计数测定津巴布韦hiv感染者CYP2B6和CYP1A2遗传变异对奈韦拉平血药浓度和药效学的影响

组学。2015年9月,19(9):553 - 62。doi: 10.1089 / omi.2015.0104。

PubMed ID
26348712 (PubMed视图
摘要

撒哈拉以南非洲地区艾滋病毒/艾滋病的极高患病率和当前抗逆转录病毒药物的局限性需要新的工具来优化治疗,例如针对人与人之间差异的药物基因组学。非洲人群比世界上其他人群表现出更大的遗传多样性,因此很难从一个人群推断出另一个人群的发现。奈韦拉平,一种抗逆转录病毒药物,显示出巨大的血浆浓度变异性,这对治疗病毒学反应产生不利影响。因此,本研究旨在确定奈韦拉平药代动力学和药动力学的变异来源,重点关注CYP2B6和CYP1A2的遗传变异。采用横断面研究设计,118名接受含奈韦拉平的高效抗逆转录病毒治疗(HAART)的津巴布韦hiv感染成年患者被鉴定出三个关键的功能性单核苷酸多态性(SNPs), CYP2B6 C . 516g >T (rs3745274), CYP2B6 C . 983t >C (rs28399499)和CYP1A2 g.-163C> a (rs762551)。我们研究了这些位点的基因型是否与奈韦拉平血药浓度(一种治疗生物标志物)和CD4细胞计数(一种疾病进展的生物标志物)相关。根据文献报道,CYP2B6和CYP1A2在奈韦拉平同类药物依非韦伦代谢中的突出作用,我们选择CYP2B6和CYP1A2作为候选基因。LC-MS/MS法测定奈韦拉平血药浓度。CYP2B6 c.516T/T基因型的奈韦拉平平均浓度分别与516G/G基因型(p < 0.001)和516G/T基因型(p < 0.01)差异有统计学意义。CYP2B6 C .983 t > C基因型间奈韦拉平平均浓度也有显著差异(p = 0.04)。 Importantly, the CYP1A2 g.-163C>A SNP was significantly associated with the pharmacodynamics endpoint, the CD4 cell count (p = 0.012). Variant allele frequencies for the three SNPs observed in this Zimbabwean group were similar to other African population groups but different to observations among Caucasian and Asian populations. We conclude that CYP2B6 c.516G>T and CYP2B6 c.983T>C could be important sources of nevirapine pharmacokinetic variability that could be considered for dosage optimization, while CYP1A2 g.-163C>A seems to be associated with HIV disease progression. These inter- and intra-population pharmacokinetic and pharmacodynamics differences suggest that a single prescribed dosage may not be appropriate for the treatment of disease. Further research into a personalized nevirapine regimen is required.

引用本文的药物库数据

药物酶
药物 种类 生物 药理作用 行动
奈韦拉平 细胞色素P450 1A2 蛋白质 人类
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