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人类寿命的演变以及控制衰老速率的遗传复杂性。

Evolution of human longevity and the genetic complexity governing aging rate.

作者信息

Cutler R G

出版信息

Proc Natl Acad Sci U S A. 1975 Nov;72(11):4664-8. doi: 10.1073/pnas.72.11.4664.

Abstract

Genetic complexity of processes governing the aging rate of man was estimated by determining the maximum rate lifespan has evolved along the hominid ancestral-descendant sequence. Maximum lifespan potential was found to have increased approximately 2-fold over the past 3 million years, reaching a maximum rate of increase of 14 years per 100,000 years about 100,000 years ago. It is estimated that about 0.6% of the total functional genes have received substitutions leading to one or more adaptive amino acid changes during this 100,000-year time-period. This suggests that aging is not the result of an expression of a large number of independently acting processes. Instead, primary aging processes appear to exist where only a few genetic changes are necessary to decrease uniformly the aging rate of many different physiological functions.

摘要

通过确定人类沿着原始人祖先-后代序列进化的最大寿命速率,估算了控制人类衰老速率过程的遗传复杂性。发现最大寿命潜力在过去300万年中增加了约2倍,在约10万年前达到了每10万年增加14年的最大速率。据估计,在这10万年的时间段内,约0.6%的总功能基因发生了替代,导致一个或多个适应性氨基酸变化。这表明衰老不是大量独立作用过程表达的结果。相反,似乎存在主要的衰老过程,在这些过程中,只需要少数基因变化就能均匀地降低许多不同生理功能的衰老速率。

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