性饮食通过平衡线粒体动力学和改善线粒体功能障碍来改善MASLD
Yuehua You1, Hongbin Ni1, Qin Ma1,2
1Department of Endocrinology, Sichuan-Chongqing Joint Key Laboratory of Metabolic Vascular Diseases, Chongqing Key Laboratory of Translational Medicine in Major Metabolic Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
通过恢复线粒体功能和减少肝脏脂肪,基因饮食 (KD) 在小鼠中部分改善了与代谢功能失调相关的脂肪性肝病 (MASLD). 这种饮食会影响涉及线粒体动态的关键蛋白质.
科学领域:
- 生物化学
- 细胞生物学
- 代谢疾病
背景情况:
- 与代谢功能障碍相关的脂肪性肝病 (MASLD) 是一个越来越严重的健康问题.
- 性饮食 (KD) 是一种有前途的生活方式干预措施,用于治疗MASLD.
研究的目的:
- 研究KD对MASLD小鼠模型中的代谢参数的影响.
- 阐明底层机制,特别关注线粒体动力学和功能.
主要方法:
- 在高脂肪饮食 (HFD) 诱导的MASLD小鼠中,KD治疗持续了两周.
- 评估肝脏脂肪,ALT,AST,以及肝脏线粒体动力学 (电子显微镜,西白斑).
- 使用HepG2细胞在体外评估线粒体功能 (qPCR,ATP含量) 和脂质沉积.
主要成果:
- 部分改善了MASLD表型,降低了肝脂肪和肝酶.
- 通过降低Fis1和Drp1水平,KD使线粒体动态正常化.
- 改善了线粒体功能障碍,增加了ATP水平和脂肪酸氧化基因.
结论:
- 两周的KD部分缓解了脂质沉积,并改善了MASLD小鼠肝脏的线粒体动力学和功能.
- 体β-酸 (β-OHB) 在缓解线粒体功能障碍和脂质积累方面发挥作用.
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