基因检测指导华法林的个体化用药PPT讲稿
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基因导向华法林个体化治疗人体对药物的反应存在巨大的个体差异,体重相近的两个人给予相同剂量的药物,他们各自的血浆药物浓度水平可能相差10倍以上。
药物相互作用、药物与食物相互作用、性别、年龄、疾病状态(即肾脏和肝脏的功能)以及妊娠都可能引发药物反应的个体差异。
遗传因素也可能起到了重要作用,因为每个个体对药物的反应具有高度可再现性。
药物基因组学是研究遗传性及获得性基因变异对药物反应作用的一门学科。
证实影响药物吸收、代谢以及作用(在受体水平时)的遗传机制,使个体化治疗成为可能,使药物疗效最优化,药物的毒性最小化。
本研究将以华法林为例,综述华法林药物基因组学的研究现状,为临床合理用药提供依据。
[Abstract] There is tremendous interindividual variability in the response to pharmacologic agents. Plasma drug levels can vary more than 10-fold when the same drug dose is administered to two individuals having approximately the same weight. Drug-drug interactions,drug-food interactions,sex,age,disease state (ie,renal and hepatic function)and pregnancy can all influence variability in drug responses between patients. Genetic factors are also likely to play a major role,since the individual response to a given pharmacologic agent is highly reproducible. Pharmacogenomics is the study of the role of inherited and acquired genetic variation on drug response. The identification of genetic factors that influence drug absorption,metabolism,and action at the receptor level should allow for individualized therapy. This could optimize drug efficacy and minimize toxicity profiles. This article will take warfarin as an example,to review the research status of warfarin pharmacogenomics,and to provide the basis for clinical rational use of drugs.[Key words] Warfarin;Pharmacogenomics;Gene polymorphism;CYP2C9;VKORC1基于遗传药理学的个体化医学的发展已经受到很多国家的高度重视。