来自巴西亚马逊的土著人民的UGT1A1多态和代谢表型
Jamila A Perini1, Alessandra S Dias2, Leonor Gusmão2
1Laboratório de Pesquisa de Ciências Farmacêuticas (LAPESF), Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, Brazil.
Pharmacogenetics and genomics
|April 25, 2025
概括
这项研究揭示了巴西亚马逊土著人口,Paiter-Suruí和Yanomami中独特的UGT1A1基因变异. 这些发现突出显示,与非土著巴西人相比,UGT1A1低代谢体表型的流行率更高.
科学领域:
- 药物基因组学 药物基因组学
- 人类遗传学 人类遗传学
- 人口遗传学 人口遗传学
背景情况:
- UGT1A1基因在药物代谢中起着至关重要的作用.
- 临床上显著的UGT1A1多态可能会影响药物的疗效和毒性.
- 了解不同人群中UGT1A1变异分布对于个性化医学至关重要.
研究的目的:
- 调查临床相关UGT1A1多态的频率.
- 为了确定推断的UGT1A1代谢表型.
- 在巴西亚马逊地区的Paiter-Suruí和Yanomami土著群体中分析这些.
主要方法:
- 对92名亚诺玛米和88名佩特-苏鲁伊人进行UGT1A1变体的基因定型 (TA重复,UGT1A1*6,UGT1A1*80).
- 使用双型的UGT1A1代谢表型的推断.
- 对具有>90%原住民祖先的个体进行分析.
主要成果:
- 缺少TA(5) 和TA(8) 等位基因;在两个群体中都有共同的TA(7) 等位基因 (频率>0.44).
- UGT1A1*80 (rs887829) 显示出与促进体TA重复的完美链接不平衡.
- UGT1A1*6 (rs4148323) 没有或很少出现.
- 中间代谢体表型是最常见的 (50.6-55.4%).
结论:
- 这项研究提供了关于这些亚马逊土著人口中UGT1A1变体和表型的第一份报告.
- TA(7) 等位基因普遍存在,rs887829与促进体重复存在强烈的链接不平衡.
- 高风险的UGT1A1低代谢体表型的发生频率比非土著巴西人高1.6至2倍.
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