Aging Cell:运动不怕晚!即使晚年才开始锻炼,也可以减缓衰老

2022-01-25 医诺维 医诺维

衰老,是一个复杂、多阶段、渐进的过程,发生在生命的整个过程。一个常见的衰老标志是,细胞慢慢失去产生新的健康细胞来修复损伤的能力。

生命的意义在于运动,运动能让身体的细胞活动起来,可以让人拥有好气色并且更加健康,运动和健康是正相关的关系。越来越多的证据显示,运动具有多种健康益处,有助于预防心脑血管疾病、糖尿病、肥胖,甚至能改善多种癌症治疗效果。

衰老,是一个复杂、多阶段、渐进的过程,发生在生命的整个过程。一个常见的衰老标志是,细胞慢慢失去产生新的健康细胞来修复损伤的能力。随着年龄的增长,人体自我修复能力开始下降,当修复能力低到极限,人就会死亡

近日,美国阿肯色大学的研究人员在 Aging Cell 期刊上发表了一篇题为:Late-life exercise mitigates skeletal muscle epigenetic aging 的研究论文。

该研究表明,即使直到晚年才开始锻炼,也可以减缓衰老的影响,运动可以减轻与年龄相关的甲基化转变,减轻骨骼肌的表观遗传衰老,逆转小鼠肌肉8%的表观遗传年龄。

近年来,科学家通过追踪DNA甲基化,找到了测量生物年龄的方法。DNA甲基化随着年龄的增长而自然发生的,但在不同的人群中发生的时间不同。事实证明,这些所谓的“表观遗传时钟”比实际年龄更能预测寿命和健康。

在该研究中,研究人员使用接近自然寿命结束的老年实验室小鼠,从22-24个月大开始接受训练,然后评估了运动如何影响骨骼肌的表观遗传衰老。

老年小鼠每天以最快的速度跑6-8公里,为期2个月的锻炼后,研究人员通过高分辨率靶向分析和对超过500个组织特异性小鼠基因座的高覆盖度分析了骨骼肌的表观遗传衰老。研究发现,运动锻炼的老年小鼠表观遗传年龄比同龄不运动的小鼠年轻了8周。

DNA甲基化分析

 

研究人员表示,如果将寿命以月为单位衡量,那么额外的8周寿命,相当于年轻了10%。

总之,该研究强调了运动的重要性,即使直到晚年才开始锻炼,也可以减缓衰老的影响。这些数据为运动作为减缓骨骼肌衰老的疗法提供了分子基础。

 

原始出处:

Kevin A. Murach, Andrea L. Dimet-Wiley, Yuan Wen, et al. Late-life exercise mitigates skeletal muscle epigenetic aging. Aging Cell, 2021.

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    2022-02-02 医者仁者

    #锻炼#永远不嫌晚!#衰老#

    0

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    2022-04-03 维他命

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