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首页> 外文期刊>The journals of gerontology.Series A. Biological sciences and medical sciences >Increased metabolic flexibility and complexity in a long-lived growth hormone insensitive mouse model
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Increased metabolic flexibility and complexity in a long-lived growth hormone insensitive mouse model

机译:在长寿命生长激素不敏感的小鼠模型中增加了代谢的灵活性和复杂性

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The goal of this study was to test whether the "loss of the complexity" hypothesis can be applied to compare the metabolic patterns of mouse models with known differences in metabolic and endocrine function as well as life span. Here, we compare the complexity of locomotor activity and metabolic patterns (energy expenditure, VO2, and respiratory quotient) of the long-lived growth hormone receptor gene deleted mice (GHR -/-) and their wild-type littermates. Using approximate entropy as a measure of complexity, we observed greater metabolic complexity, as indicated by greater irregularity in the physiological fluctuations of the GHR-/- mice. Further analysis of the data also revealed lower energy costs of locomotor activity and a stronger relationship between locomotor activity and respiratory quotient in the GHR-/- mice relative to controls. These findings suggest underlying differences in metabolic modulation in the GHR -/- mice revealed especially through measures of complexity of their time-dependent fluctuations.
机译:这项研究的目的是检验“复杂性丧失”假说是否可以用于比较具有已知代谢和内分泌功能以及寿命差异的小鼠模型的代谢模式。在这里,我们比较了长寿命生长激素受体基因缺失小鼠(GHR-/-)及其野生型同窝仔的运动活动和代谢模式(能量消耗,VO2和呼吸商)的复杂性。使用近似的熵作为复杂性的度量,我们观察到更大的代谢复杂性,如GHR-/-小鼠的生理波动更大的不规则性所表明的。数据的进一步分析还显示,相对于对照,GHR-/-小鼠的运动活动的能量消耗较低,并且运动活动与呼吸商之间的关系更强。这些发现表明,GHR-/-小鼠的代谢调节存在根本差异,尤其是通过测量其时间依赖性波动的复杂性来揭示。

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