Nat Commun: 研究发现,运动可以使细胞更健康,延长生命

2017-09-23 佚名 Medicalxpress

自古以来无论是跑步,散步,骑自行车,游泳还是划船都是众所周知的,进行某种形式的有氧运动对健康和福祉至关重要。

自古以来无论是跑步,散步,骑自行车,游泳还是划船都是众所周知的,进行某种形式的有氧运动对健康和福祉至关重要。

弗吉尼亚大学医学院的甄妍说:“运动能力主要由肌肉的大小和功能决定,是普通人群死亡率的最佳预测指标。”

但为什么呢?甄妍可能有一些答案。他和UVA的同事在细胞内在分子层面分析,为什么这种锻炼对身体至关重要。他们发现一个重要的好处是细胞发电厂 - 线粒体 - 产生燃料,使身体能够正常工作。

线粒体

甄妍和他的同事已经完成了对小鼠的研究,首次表明,一次中度至强度的运动可以作为肌肉线粒体的“压力测试”。他们发现这种由有氧运动引起的“压力测试”引发了一种称为线虫病的过程,肌肉处于损伤或功能失调的线粒体中,使肌肉更健康。

“有氧运动消除骨骼肌损伤的线粒体,”甄妍说:“如果你反复做,会不断删除损坏的肌肉,你的肌肉线条线质量会更好。”

对于这项研究,甄妍和他的同事评估了一个小鼠模型的骨骼肌,在那里他们添加了一个称为“pMitoTimer”的线粒体报告基因。当线粒体健康时发出绿色荧光。

甄妍的实验室还删除了小鼠骨骼肌中的Ulk1基因,发现没有该基因,损伤或功能失调的线粒体的去除被显着抑制,这表明了Ulk1基因在运动和间质细胞中的新作用。

研究合作者甄妍实验室博士后研究员约书亚德雷克(Joshua Drake)解释说:“无法做到线虫病的小鼠没有获得运动的好处。即使从运动的角度来看,他们仍然能够像正常的老鼠一样跑步,但他们没有受到培训的代谢益处。”

研究结果已经在自然通讯科学杂志在线发表。

原始出处:
Rhianna C. Laker , Joshua C. Drake, Rebecca J. Wilson,et al. Ampk phosphorylation of Ulk1 is required for targeting of mitochondria to lysosomes in exercise-induced mitophagy, Nature Communications (2017). DOI: 10.1038/s41467-017-00520-9

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    2018-05-10 liuli5079
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    2017-11-30 liye789132251
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    2017-09-23 131****1460

    学习了受益匪浅

    0

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    2017-09-23 lovetcm

    分子机制研究不代表实践.在临床上面还要给运动进行定量.过度的运动并不一定是好事

    0

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    2017-09-23 lovetcm

    类似研究很多

    0

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