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Genetics: 4亿人的家谱显示遗传对长寿的影响有限

2018-11-10 海北 MedSci原创

虽然人们普遍认为,由于遗传原因,有些家庭中成员的寿命很长,但生命周期“遗传性”的估计值一直很低(约15-30%)。

人类寿命是一种表型,它将健康和环境的许多方面整合为一个最终数量:出生和死亡之间经过的时间。虽然人们普遍认为,由于遗传原因,有些家庭中成员的寿命很长,但生命周期遗传性的估计值一直很低(约15-30%)。

最近,研究人员使用来自Ancestry的公共谱系数据,包括数亿历史人物,来估计人类长寿的遗传性。尽管基于遗传亲属之间的相关性的名义遗传力估计与先前的文献一致,但大多数相关性也通过非遗传(姻亲)亲属之间的相关性被捕获,暗示了围绕寿命影响因子的高度配对(遗传和/或环境)。

研究人员使用结构方程模型来解释相互配对,并得出结论:19世纪和20世纪初期出生队列的人类长寿的真正遗传度远低于10%,并且由于相互配对的影响,它通常被高估了。


原始出处:

J. Graham Ruby et al. Estimates of the Heritability of Human Longevity Are Substantially Inflated due to Assortative Mating. Genetics, 2018; 210 (3): 1109 DOI: 10.1534/genetics.118.301613


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    2019-07-12 cy0324
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    2019-07-22 huperzia
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    2019-05-06 canlab

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