肌肉健康和疾病中的循环节律
1Randall Centre for Cell and Molecular Biophysics, King's College London, London SE1 1UL, United Kingdom.
International review of cell and molecular biology
|May 20, 2025
概括
肌肉钟调节新陈代谢和生理学,影响葡萄糖和胰岛素水平. 破坏这种内部时钟可能会导致代谢障碍和肌肉问题.
科学领域:
- 时间生物学 时间生物学
- 骨肌肉生理学 骨肌肉生理学
- 代谢调节 代谢调节 代谢调节
背景情况:
- 循环节律是由大多数生命形式中存在的内部生物钟调节的.
- 上神核 (SCN) 是哺乳动物的中央时钟,历史上被认为控制了外围时钟.
- 新兴研究强调了外围时钟,如骨肌肉时钟在当地新陈代谢中的关键作用.
研究的目的:
- 研究骨肌钟在调节肌肉新陈代谢和生理学的作用.
- 了解肌肉时钟中断对代谢健康和肌肉功能的影响.
- 探索针对肌肉病理的肌肉钟的潜在治疗策略.
主要方法:
- 用动物模型进行的研究用于检查与骨肌肉代谢相关的基因表达.
- 评估了肌肉时钟干扰对葡萄糖耐受性,胰岛素耐药性和肌肉特征的影响.
- 审查了将肌肉昼夜节律扰乱与代谢和肌肉疾病联系在一起的人类数据.
主要成果:
- 肌肉外周时钟对于调节参与葡萄糖,脂质和氨基酸代谢的基因至关重要.
- 肌肉时钟的干扰会导致葡萄糖不耐受,胰岛素抵抗以及肌肉大小和力量的变化.
- 肌肉昼夜节律的扰乱在人类代谢障碍中如2型糖尿病和肌肉疾病中被观察到.
结论:
- 肌肉时钟在控制肌肉生理和新陈代谢方面发挥着至关重要的作用.
- 正如轮班工作中所见的循环节错位,可以扰乱肌肉代谢.
- 了解肌肉时钟机制可能会导致慢性治疗,以预防或治疗肌肉病理并保持肌肉健康.
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