基因多态性对OCT1和雷尼替丁OCT2-mediated吸收。
文章的细节
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引用
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迈耶MJ,塞茨T, Brockmoller J, Tzvetkov MV
基因多态性对OCT1和雷尼替丁OCT2-mediated吸收。
《公共科学图书馆•综合》。2017年12月13日,12 (12):e0189521。doi: 10.1371 / journal.pone.0189521。eCollection 2017。
- PubMed ID
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29236753 (在PubMed]
- 文摘
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背景:雷尼替丁(雷尼替丁(R))是一个H2-receptor拮抗剂常用acid-related胃肠道疾病的治疗。据报道,雷尼替丁的底物有机阳离子转运蛋白OCT1 OCT2。肝运输车OCT1高度基因变量。十二个主要等位基因赋予OCT1活动的部分或完全丧失。这些多态性的影响高度substrate-specific,因此很难预测。肾运输车OCT2共同多态性,Ala270Ser,据报道,影响OCT2活动。目的:在这项研究中,我们分析了遗传多态性的影响在OCT1和OCT2雷尼替丁的吸收和抑制吸收其他药物的效力。方法和结果:我们使用HEK293雷尼替丁吸收特征和稳定转染CHO细胞过表达野生型OCT1, OCT2或自然发生的等位变异。雷尼替丁是由野生型运输OCT1 62.9公里的妈妈和vmax pmol /分钟/ 1125毫克的蛋白质。等位基因OCT1 * 5 * 6 * 12 * 13完全缺乏吸收雷尼替丁。 Alleles OCT1*2, *3, *4, and *10 had vmax values decreased by more than 50%. In contrast, OCT1*8 showed an increase of vmax by 25%. The effects of OCT1 alleles on ranitidine uptake strongly correlated with the effects on morphine uptake suggesting common interaction mechanisms of both drugs with OCT1. Ranitidine inhibited the OCT1-mediated uptake of metformin and morphine at clinically relevant concentrations. The inhibitory potency for morphine uptake was affected by the OCT1*2 allele. OCT2 showed only a limited uptake of ranitidine that was not significantly affected by the Ala270Ser polymorphism. CONCLUSIONS: We confirmed ranitidine as an OCT1 substrate and demonstrated that common genetic polymorphisms in OCT1 strongly affect ranitidine uptake and modulate ranitidine's potential to cause drug-drug interactions. The effects of the frequent OCT1 polymorphisms on ranitidine pharmacokinetics in humans remain to be analyzed.
DrugBank数据引用了这篇文章
- 药物转运蛋白
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药物 转运体 类 生物 药理作用 行动 雷尼替丁 溶质载体家庭22个成员1 蛋白质 人类 未知的底物抑制剂细节 雷尼替丁 溶质载体家庭22个成员2 蛋白质 人类 未知的底物细节