运动可以增强心肌细胞的线粒体平衡,以缓解左心室功能障碍的压力过载诱导的重塑
Zhichao Ma1,2,3, Yanling Cen4,5,6, Weiwei Xun5,6
1School of Physical Education, Wuhan Business University, Wuhan, 430056, China. 20150458@wbu.edu.cn.
Scientific reports
|April 5, 2025
概括
运动训练通过增强线粒体功能和减少病理性心脏缩来改善心脏健康. 这项研究强调了NDUFB10在调解这些有益作用中的作用,为心脏病提供了新的治疗点.
科学领域:
- 心血管生物学 心血管生物学
- 线粒体医学 线粒体医学
- 运动生理学 运动生理学
背景情况:
- 病理性心脏缩的特点是心肌细胞大小增加,心脏功能受损和线粒体动态变化.
- 线粒体功能障碍,包括过度的分裂和自,有助于心脏缩和心肌细胞亡的进展.
- 了解运动诱导心脏保护的分子机制对于开发新型治疗策略至关重要.
研究的目的:
- 通过检查运动对线粒体调节的影响来研究运动在缓解病态心脏缩中的作用.
- 阐明特定的分子途径,特别是涉及NDUFB10基因,这些途径介于运动诱导的心脏保护.
- 评估NDUFB10调制对心脏缩模型中的线粒体功能,自和亡的影响.
主要方法:
- 建立心脏缩 (假和自发高血压大鼠) 的老鼠模型,并评估运动干预 (游泳).
- 在体外研究中,使用使用 H9C2 细胞治疗 angiotensin II (Ang II) 诱导高,操纵 NDUFB10 表达 (shRNA 和过度表达).
- 使用各种生化和分子技术评估心脏功能,心肌细胞大小,线粒体形态 (裂变/融合),自,亡,线粒体膜潜力,ROS水平和NDUFB10表达 (mRNA和蛋白质).
主要成果:
- 与模型组 (SC) 相比,运动训练显著减少了心肌细胞直径,改善了心脏功能,并在运动组 (SE) 中减轻了线粒体分裂和自.
- NDUFB10在缩性心脏 (SC) 中降低调节,但在运动 (SE) 中升高调节,与氧化酸化相关.
- 在体外,NDUFB10的淘汰加剧了Ang II诱导的线粒体功能障碍和亡,而NDUFB10的过度表达逆转了这些病理变化.
结论:
- 在大鼠模型中,游泳运动有效地改善了病态心脏缩和相关的线粒体异常.
- 该研究确定NDUFB10是线粒体功能和心肌细胞存活的关键调节者,调解运动的有益影响.
- 准NDUFB10可能是治疗左心室缩和相关心血管疾病的有希望的治疗策略.
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