Torpor induction in mammals: recent discoveries fueling new ideas.

Torpor induction in mammals: recent discoveries fueling new ideas.
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DOI:
10.1016/j.tem.2009.09.005
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发表时间:
2009-12
影响因子:
10.9
通讯作者:
Andrews, Matthew T.
Andrews, Matthew T.
中科院分区:
医学1区
文献类型:
--
作者:
Melvin, Richard G.;Andrews, Matthew T.

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当面对恶劣的气候或食物不足时,一些哺乳动物会进入一种被称为“麻木”的假死状态。冬眠研究的一个主要目标是确定整合环境因素、基因表达和代谢的机制,以产生持续数小时至数周的冬眠期。最近跨越后生动物的发现表明,sirtuins、哺乳动物生物钟、成纤维细胞生长因子21 (FGF21)和脂质参与了睡眠诱导。例如,sirtuins将细胞能量状态与哺乳动物生物钟、氧化应激和代谢燃料选择联系起来。在这篇综述中,我们讨论了这些最近的发现如何形成一个新的假设,将物理环境的变化与调节麻木诱导的基因表达的变化联系起来。
When faced with a harsh climate or inadequate food, some mammals enter a state of suspended animation known as torpor. A major goal of torpor research is to determine mechanisms that integrate environmental cues, gene expression and metabolism to produce periods of torpor lasting from hours to weeks. Recent discoveries spanning the metazoa suggest that sirtuins, the mammalian circadian clock, fibroblast growth factor 21 (FGF21) and lipids are involved in torpor induction. For example, sirtuins link cellular energy status to the mammalian circadian clock, oxidative stress, and metabolic fuel selection. In this review, we discuss how these recent discoveries form a new hypothesis linking changes in the physical environment with changes in the expression of genes that regulate torpor induction.
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