耐力运动预调缓解因多克索鲁比诱导的心脏毒性诱导的铁亡,通过线粒体超氧化物依赖的AMPKα2激活
Liang Wang1, Yang Qiao1, Jingzhi Yu2
1Jiangxi Academy of Clinical Medical Sciences, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, China.
Redox biology
|February 15, 2024
概括
耐力运动预调可以通过激活AMPKα2,增强线粒体功能,促进自,从而防止多克索鲁比诱导的心脏毒性. 这为心脏康复患者提供了潜在的策略.
科学领域:
- 心血管研究研究心血管研究
- 细胞死亡机制 细胞死亡机制
- 线粒体生物学 线粒体生物学
背景情况:
- doxorubicin 诱导的心脏毒性 (DIC) 对患者的结果和心脏康复产生负面影响.
- DIC的机制包括铁和自,但尚未完全理解.
- 耐力训练 (E-Exe) 预调节显示在缓解DIC方面具有前景,可能通过AMPK途径.
研究的目的:
- 调查E-Exe预先调节对DIC的保护机制.
- 阐明线粒体,铁,自和AMPK通路在E-Exe保护作用中的作用.
主要方法:
- 已建立的DIC和E-Exe预调的小鼠和初级心肌细胞模型.
- 使用了铁灭抑制剂/诱导剂,自调节剂和AMPK抑制剂 (化合物C).
- 评估了Fe2+积累,氧化应激,能量代谢和线粒体功能.
主要成果:
- E-Exe预条件模仿铁灭抑制剂和自诱导剂,减少Fe2+和氧化应激,并改善线粒体功能.
- 抑制铁或自,或降低调节/抑制AMPKα2,取消了E-Exe的保护作用.
- E-Exe上调和酸化AMPKα2,增强线粒体复合体I活性和自适应性自.
结论:
- E-Exe预先调节激活AMPKα2,从而增强线粒体复合体I活性和自适应性自,从而赋予心肌对DIC的耐受性.
- 线粒体在DIC诱导的铁亡中起着至关重要的作用,而E-Exe预制提供了一种保护策略.
- 对于正在接受心脏康复的患者来说,E-Exe预约是一种潜在的治疗方法,以预防DIC.
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