作者
Davina Derous, Sharon E Mitchell, Cara L Green, Luonan Chen, Jing‐Dong J Han, Yingchun Wang, Daniel EL Promislow, David Lusseau, John R Speakman, Alex Douglas
发表日期
2016/4
期刊
Aging (Albany NY)
卷号
8
期号
4
页码范围
642
出版商
Impact Journals, LLC
简介
Food intake and circadian rhythms are regulated by hypothalamic neuropeptides and circulating hormones, which could mediate the anti‐ageing effect of calorie restriction (CR). We tested whether these two signaling pathways mediate CR by quantifying hypothalamic transcripts of male C57BL/6 mice exposed to graded levels of CR (10% to 40%) for 3 months. We found that the graded CR manipulation resulted in upregulation of core circadian rhythm genes, which correlated negatively with circulating levels of leptin, insulin‐like growth factor 1 (IGF‐1), insulin, and tumor necrosis factor alpha (TNF‐α). In addition, key components in the hunger signaling pathway were expressed in a manner reflecting elevated hunger at greater levels of restriction, and which also correlated negatively with circulating levels of insulin, TNF‐α, leptin and IGF‐1. Lastly, phenotypes, such as food anticipatory activity and body …
引用总数
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