Aging Disrupts Circadian Rhythms in Mouse Liver Mitochondria.

Aging Disrupts Circadian Rhythms in Mouse Liver Mitochondria.
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DOI:
10.3390/molecules28114432
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发表时间:
2023-05-30
期刊:
影响因子:
4.6
通讯作者:
Li, Xiaodong
Li, Xiaodong
中科院分区:
化学2区
文献类型:
--
作者:
Xu, Wei;Li, Xiaodong

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The circadian clock regulates daily changes in behavioral, endocrine, and metabolic activities in mammals. Circadian rhythms in cellular physiology are significantly affected by aging. In particular, we previously found that aging has a profound impact on daily rhythms in mitochondrial functions in mouse liver, leading to increased oxidative stress. This is not due to molecular clock malfunctions in peripheral tissues in old mice, however, as robust clock oscillations are observed therein. Nonetheless, aging induces changes in gene expression levels and rhythms in peripheral and probably central tissues. In this article, we review recent findings on the roles of the circadian clock and the aging process in regulating mitochondrial rhythms and redox homeostasis. Chronic sterile inflammation is implicated in mitochondrial dysfunction and increased oxidative stress during aging. In particular, upregulation of the NADase CD38 by inflammation during aging contributes to mitochondrial dysregulation.
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