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通过使用电子健康记录来描述成年期脂肪变化的遗传结构
Samvida S Venkatesh1,2, Habib Ganjgahi3,4, Duncan S Palmer3,5
1Wellcome Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford, UK. samvida@well.ox.ac.uk.
Nature communications
|July 10, 2024
概括
这项研究使用大型数据集分析了影响身体质量指数 (BMI) 成年后变化的遗传因素. 它确定了BMI变化的新遗传关联,揭示了对体重增加和稳定的BMI有不同的遗传影响.
科学领域:
- 遗传学 遗传学 是一个
- 肥胖问题研究研究
- 生物信息学是一种生物信息学.
背景情况:
- 肥胖是一种遗传性疾病,其特点是过多的脂肪,通常用身体质量指数 (BMI) 来衡量.
- 虽然许多遗传位置与BMI有关,但整个成年期肥胖轨迹的遗传基础仍然不太了解.
- 了解这些轨迹对于开发有针对性的干预措施至关重要.
研究的目的:
- 为了研究肥胖 (身体脂肪) 在成年后改变的遗传结构.
- 确定与身体质量指数 (BMI) 的纵向变化相关的新型遗传位置.
- 为了比较基因遗传性和基线BMI和BMI变化之间的相关性.
主要方法:
- 从英国生物银行,百万退伍军人计划和爱沙尼亚生物银行中从超过74万个人的脂肪变化表型中获得.
- 随着时间的推移,利用多个BMI测量来增强遗传关联研究的力量.
- 进行了迄今为止最大的全基因组研究,重点关注成人BMI变化.
主要成果:
- 确定了六个与成人BMI变化相关的新型独立遗传位置,包括APOE基因的变异 (rs429358).
- 发现BMI变化基于SNP的遗传率为1.98%,明显低于基线BMI.
- 在BMI变化和基线BMI之间观察到温和的遗传相关性 (45.2%).
结论:
- 对肥胖轨迹的纵向遗传研究可以揭示与静态BMI不同的新生物学见解.
- 随着时间的推移,影响体重变化的遗传因素与影响基线肥胖水平的遗传因素不同.
- 对这些遗传轨迹的进一步研究可能会揭示肥胖管理的新治疗点.
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