Pleiotropic effects of growth hormone signaling in aging.

Pleiotropic effects of growth hormone signaling in aging.
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DOI:
10.1016/j.tem.2011.07.004
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发表时间:
2011-11
影响因子:
10.9
通讯作者:
Bartke, Andrzej
Bartke, Andrzej
中科院分区:
医学1区
文献类型:
--
作者:
Bartke, Andrzej

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生长激素(GH)影响身体生长、性成熟、身体成分和代谢,以及衰老和长寿。缺乏生长激素或生长激素受体的小鼠比正常的兄弟姐妹活得更长,并表现出与胰岛素信号改善和应激抵抗力增强相关的延缓衰老的症状。消除生长激素作用的有益效果是违反直觉的,但符合拮抗多效性的概念。对促进早期生命健康和繁殖成功的特征的进化选择可能解释了繁殖后的不利影响。在突变小鼠身上发现的生长激素信号和寿命之间的相互关系也适用于正常小鼠、其他哺乳动物物种,或许还有人类。本文综述了促生长信号与哺乳动物衰老之间多方面关系的研究现状。
Growth hormone (GH) affects somatic growth, sexual maturation, body composition and metabolism, as well as aging and longevity. Mice lacking GH or GH receptor outlive their normal siblings and exhibit symptoms of delayed aging associated with improved insulin signaling and increased stress resistance. Beneficial effects of eliminating the actions of GH are counterintuitive but conform to the concept of antagonistic pleiotropy. Evolutionary selection for traits promoting early life fitness and reproductive success may account for detrimental effects post-reproductively. Reciprocal relationships between GH signaling and longevity discovered in mutant mice apply also to normal mice, other mammalian species, and perhaps humans. This review summarizes the present understanding of the multifaceted relationship between somatotropic signaling and mammalian aging.
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