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Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu01:29

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Genetic variations significantly influence drug response through pharmacokinetics, receptor interactions, and biologic milieu modifications. Pharmacokinetic alterations impact drug metabolism and clearance, affecting efficacy and toxicity. Variants in drug-metabolizing enzymes, such as CYP2C9 and CYP2C19, alter drug activation and elimination. For example, CYP2C9 loss-of-function variants require lower warfarin doses to prevent excessive bleeding, while CYP2C19 variants reduce clopidogrel...
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The pharmacogenetics of drug transporters is increasingly recognized as a critical factor influencing interindividual variability in drug absorption, distribution, and elimination. These membrane-bound proteins regulate drugs' movement across cellular barriers by actively pumping them out (efflux) or facilitating their uptake (influx). Among the major transporter families, ATP-binding cassette (ABC) and solute carrier (SLC) transporters play particularly prominent roles. Genetic polymorphisms...
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Advances in genomics have profoundly influenced drug discovery by increasing both the speed and accuracy of pharmaceutical development. Pharmacogenomics, which examines how genetic variation influences drug response, facilitates the identification of novel therapeutic targets and enables patient stratification for personalized treatment. These strategies contribute to improved drug efficacy, minimized adverse effects, and more efficient clinical trial design.Mapping genetic differences...
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Understanding serum lipids is crucial for maintaining cardiovascular health and preventing heart disease and stroke.
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在患有高密度脂蛋白胆固醇升高的人体内皮质脂酶遗传变异的鉴定.

Andrew S deLemos1, Megan L Wolfe, Christopher J Long

  • 1Department of Medicine, University of Pennsylvania, Philadelphia, USA.

Circulation
|September 11, 2002
PubMed
概括
此摘要是机器生成的。

在具有高高密度脂蛋白胆固醇 (HDL-C) 个体中发现了内皮脂酶 (EL) 基因的遗传变异. 这些EL基因变异可能会影响HDL-C水平和心血管疾病风险.

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科学领域:

  • 遗传学 是一个遗传学.
  • 心血管疾病研究研究
  • 脂质代谢 脂质代谢是什么

背景情况:

  • 高密度脂蛋白胆固醇 (HDL-C) 的升高与心血管疾病风险的降低有关.
  • 内皮脂酶 (EL) 在调节HDL-C水平方面发挥作用,如小鼠模型所示.
  • 遗传因素对HDL-C水平的变化有很大影响.

研究的目的:

  • 研究内皮脂酶 (EL) 基因的遗传变异与高密度脂蛋白胆固醇 (HDL-C) 水平升高之间的关联.
  • 识别EL基因及其促进区内的新型遗传变异.

主要方法:

  • 在20个患有高HDL-C的个体中,对EL基因促进子区域的所有外显子和1.2千基基的测序.
  • 使用限制酶分析识别和确认潜在的功能变异.
  • 在黑人对照组,白人对照组和具有高HDL-C的白人个体中确定变异的基因定型.

主要成果:

  • 在EL基因中发现了17种变异,证实了6种潜在的功能变异.
  • 四种变异导致了氨基酸变化 (Gly26Ser,Thr111Ile,Thr298Ser,Asn396Ser) 和两个促进物 (-303A/C,-410C/G).
  • Thr111Ile变异在不同群体中很常见,而其他变异在种族群体和HDL-C水平之间显示出不同的频率,其中一些在白人对照中缺席.

结论:

  • 在高HDL-C的个体中发现了内皮脂酶 (EL) 基因中的六种新型,潜在的功能变异.
  • 在黑人和白人种群之间,以及在对照组和高HDL-C组之间,观察到EL基因变异的等位基因频率的显著差异.
  • 这些发现表明,EL的遗传变异在确定高HDL-C水平和潜在的心血管风险方面起着作用.