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依赖DRP1的线粒体裂变有助于乳酸诱导的心肌细胞损伤

Dongfang Hu¹, Yunli Cui², Xueke Hou¹

¹College of Animal Science and Technology, Henan Institute of Science and Technology, Xinxiang, China.

Journal of biochemical and molecular toxicology

|January 5, 2025

概括

乳酸 (LA) 通过破坏线粒体,损害肉心脏细胞,导致突然死亡综合征 (SDS). 使用Mdivi-1抑制线粒体裂变可以保护心脏细胞,这为预防 brojlers中SDS提供了潜在的策略.

科学领域:

动物科学动物科学
心血管研究研究心血管研究
细胞生物学细胞生物学

背景情况:

肉的突然死亡综合征 (SDS) 与增强的葡萄糖分解和乳酸 (LA) 生产有关.
在快速生长的肉中,LA诱导的心肌细胞损伤和心力衰竭的确切机制需要进一步阐明.

研究的目的:

研究LA对胚心肌细胞 (CEC) 的影响,并阐明LA诱导损伤的潜在机制.
探索潜在的治疗策略,以预防LA诱导的肉SDS.

主要方法:

胚胎心肌细胞 (CEC) 的初级培养和用乳酸 (LA) 的治疗.
评估CEC的增殖,收缩,亡和线粒体功能 (超结构,膜潜力,动态).
评估Mdivi-1,一个Drp1抑制剂,对LA治疗的CEC的保护作用.

主要成果:

LA抑制了CEC的增殖和收缩,诱导了亡,并破坏了线粒体超结构和膜潜力.
氨酸激活了线粒体和扰乱了线粒体动力学,导致线粒体裂变的增加.
Mdivi-1治疗改善了CEC活力,恢复了线粒体完整性,减少了活性氧物种,并抑制了LA诱导的亡.

结论:

肉SDS中LA诱导的心肌细胞损伤与线粒体损伤和过度的线粒体裂变有关.
使用Mdivi-1抑制线粒体过裂有效地保持了CEC的形态,结构和功能,这对于预防LA诱导的损伤至关重要.
这项研究为制定预防和控制肉SDS的策略提供了机制基础.

关键词:

在Mdivi-1中.心肌细胞会损害心肌细胞.乳酸乳酸是什么意思乳酸是什么意思线粒体的动力学突发死亡综合征是什么

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