急性和慢性炼如何调节肌肉缩基因以缓解肉症:叙述性综述
Maysa Vieira de Sousa1, Diana Bento da Silva Soares2, Hassane Zouhal3
1Laboratory of Medical Investigation, LIM-18, Division of Endocrinology Division, Faculdade de Medicina FMUSP, Universidade de São Paulo, São Paulo, SP, Brazil. maysavsousa@gmail.com.
Sports medicine (Auckland, N.Z.)
|February 14, 2026
概括
肌肉缩,肌肉质量和力量的损失,通常是由不活动引起的. 运动可以通过激活肌肉生长途径和减少蛋白质降解,改善健康和移动性来对抗这种情况.
科学领域:
- 肌肉生理学和分子生物学
- 老年学和慢性疾病研究研究.
- 运动科学和康复
背景情况:
- 肌肉缩,以减少肌肉质量和力量为特征,源于肌肉纤维大小和蛋白质含量减少.
- 身体不活动,衰老,饥饿,固定和癌症和糖尿病等慢性疾病加剧了这种情况,导致生活质量下降.
- 身体不活动是主要的驱动因素,增加炎症因素和葡萄皮质类药物,破坏信号通路 (GH/IGF-1,,肌素),并促进缩基因表达 (ATROGIN-1,MuRF-1).
研究的目的:
- 审查肌肉缩背后的分子机制,重点关注ATROGIN-1和MuRF-1基因.
- 为了检查运动,无论是急性还是慢性,如何影响这些缩相关基因的表达.
- 为了探索其他参与肌肉重塑以应对运动的调节者.
主要方法:
- 这篇叙事综述综合了实验和临床研究的发现.
- 它分析了涉及基因表达,蛋白质降解 (ubiquitin-proteasome系统) 和信号通路 (mTOR,Akt/FoxO) 的分子机制.
- 这篇评论讨论了ATROGIN-1和MuRF-1在应对各种运动干预措施时的不同基因表达模式.
主要成果:
- 身体不活动会触发信号级联,导致ATROGIN-1和MuRF-1的激活,通过ubiquitin-proteasome系统促进肌肉蛋白质的降解.
- 运动干预措施通过激活肌肉蛋白质合成 (例如,通过mTOR) 和抑制与肌肉缩相关基因的表达来抵消肌肉缩的潜力.
- 突出显示了参与运动诱导肌肉重塑的特定分子通路和调节剂.
结论:
- 肌肉缩是一个由分子信号驱动的复杂过程,受到身体活动水平的重大影响.
- 运动成为减轻肌肉损耗的关键干预措施,通过调节蛋白质合成和降解途径来减轻肌肉损耗.
- 了解这些机制为针对性治疗策略提供了基础,以对抗不同人群的肌肉损失.
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