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高脂肪饮食通过增加氧化应激和炎症预测与年龄相关的肉症
Fabiano Cimmino1, Lidia Petrella1, Gina Cavaliere2
1Department of Biology, University of Naples Federico II, Naples, Italy.
高脂肪饮食加速与衰老相关的代谢衰退和炎症,特别是影响线粒体,导致肉. 肥胖大鼠的身体活动减少进一步损害了线粒体功能,恶化了与年龄相关的疾病.
科学领域:
- 老年学是一门学科.
- 代谢障碍 代谢障碍 代谢障碍
- 线粒体生物学 线粒体生物学
背景情况:
- 衰老和肥胖共享代谢变化,如炎症,胰岛素抵抗和线粒体功能障碍.
- 线粒体容量随着年龄的增长而下降,但会发生两相变化,呼吸和ROS产生的初始增加.
- 肥胖加剧了与年龄相关的身体组成变化,如肉症,其特点是肌肉质量和力量的减少.
研究的目的:
- 研究饮食诱导肥胖的代谢和炎症变化的时间过程.
- 评估高脂肪饮食 (HFD) 对身体组成,氧化应激和线粒体功能的影响.
- 了解HFD如何影响与年龄相关的变化,包括肉症.
主要方法:
- 雄性Wistar大鼠被食标准饮食或高脂肪饮食 (HFD) 长达24周.
- 在多个时间点分析了身体组成,炎症标记,氧化应激和线粒体功能.
- 这项研究利用了饮食诱导的肥胖的实验动物模型.
主要成果:
- HFD显著预期并恶化了与年龄相关的代谢和炎症变化.
- 线粒体在试图调节与衰老相关的生理变化方面发挥了关键作用.
- 在HFD组中,由于炎症和氧化应激增加,抗氧化剂防御被压倒了.
结论:
- HFD加速和加剧了典型的衰老的代谢和炎症变化,包括sarcopenia.
- 在HFD大鼠的骨肌中,线粒体功能受损可能部分是由于身体活动减少.
- 线粒体功能障碍是肥胖加剧衰老现象的一个关键因素.
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