社会时差改变了心脏中运动诱导的线粒体适应的标志物
Michael B Dial1, Elias M Malek1, Austin R Cooper1
1School of Integrated Health Sciences, Department of Kinesiology and Nutrition Sciences, University of Nevada, Las Vegas, Las Vegas, NV, USA.
Npj biological timing and sleep
|August 21, 2025
概括
社交时差会破坏昼夜节律和心脏健康. 虽然运动有助于重新训练,但SJL会损害心脏中运动诱导的线粒体适应.
科学领域:
- 心血管科学
- 时间生物学
- 线粒体生物学
背景情况:
- 社交时差 (SJL) 是睡眠/清醒时间的错误,影响全球70%的人,与心脏代谢疾病有关.
- 之前的研究表明SJL会破坏活动和时钟基因, 但其对心脏的影响尚不清楚.
研究的目的:
- 研究长期SJL对活动节律的影响.
- 确定SJL对运动引起的心脏适应的影响.
主要方法:
- 雄性小鼠接受了6周的对照光:黑暗或SJL方案.
- 将小鼠分配到自愿炼或静坐的组.
- 分析了心脏线粒体融合蛋白 (MFN1,OPA1,MFN2).
主要成果:
- 在周末开始转移活动; 运动加速重新训练.
- 在对照组和SJL组中,运动诱导的心肌缩.
- 尽管线粒体含量没有变化,但SJL降低了MFN1/ OPA1表达,并抑制了运动诱导的MFN2增加.
结论:
- 在SJL的基础上,运动有助于重新训练工作日的时间表.
- 在心脏中干扰运动诱导的线粒体融合/裂变动态.
- 需要进一步的研究来了解SJL的心血管影响,并制定预防策略.
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