瑞诺丁受体稳定剂S-107在7天后的后肢卸载后,挽救了慢型老鼠单肢肌肉功能
Daria A Sidorenko1, Roman O Bokov1, Gleb V Galkin1
1Myology Laboratory, Institute of Biomedical Problems RAS, Khoroshevskoe Shosse 76A, 123007, Moscow, Russian Federation.
Pflugers Archiv : European journal of physiology
|August 5, 2025
概括
在肌肉不使用期间用S-107稳定氨酸受体 (RyRs),可以防止线粒体的积累,并改善肌肉功能. 这表明RyR功能对于在不活动期间保持肌肉力量至关重要.
科学领域:
- 肌肉生理学 肌肉生理学
- 细胞生物学 细胞生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 肌肉不使用导致肌肉纤维积聚,损害功能.
- 泄漏的氨酸受体 (RyRs) 在肌肉不活动期间涉及过度的积累.
研究的目的:
- 为了调查S-107,一个RyR稳定剂,可以防止积累,并改善后肢悬浮 (HS) 期间的肌肉功能在老鼠.
主要方法:
- 雄性Wistar老鼠接受了7天的后肢悬浮.
- 在HS期间,S-107每天通过食物被服用.
- 评估肌肉功能,线粒体呼吸,生物发生和水平.
主要成果:
- HS导致的积累,增加了线粒体呼吸,并减少了soleus肌肉中的线粒体生物发生.
- S-107治疗可以防止线粒体积和呼吸系统过度活化.
- S-107减弱了线粒体生物生成标记的下降,改善了疲劳抵抗力,部分保留了肌肉力量.
结论:
- 肌肉不使用期间的RyR不稳定导致线粒体和肌肉质的积累,降低肌肉力量和耐疲劳能力.
- 使用S-107稳定RyRs提供了一种潜在的治疗策略,可以在不使用期间减轻肌肉功能障碍.
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