费诺纤维酸通过增强PPARα/PGC-1α信号通路合线粒体功能来缓解NAFLD
Xuemei Wang1, Jieying Wang1, Cao Ying1
1Department of public health, Xi'an Medical College, No. 1 Xinwang Road, Weiyang District, Xi'an, Shaanxi, 710000, China.
BMC pharmacology & toxicology
|January 4, 2024
概括
费诺纤维酸治疗通过增强线粒体功能和减少肝脂积累,改善了小鼠的非酒精性脂肪性肝病 (NAFLD). 过度表达PGC-1α也减轻了肝细胞中的脂质沉积和氧化应激.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 线粒体生物学 线粒体生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 非酒精性脂肪性肝病 (NAFLD) 的特点是肝脏脂质积累和线粒体功能障碍.
- 高脂肪饮食和自由脂肪酸 (FFAs) 是NAFLD病变的关键因素.
- 了解NAFLD中信号通路的作用对于开发有效治疗方法至关重要.
研究的目的:
- 在NAFLD小鼠模型中研究费诺纤维酸对肝脏脂质积累和线粒体功能的影响.
- 阐明PPARα/PGC-1α信号通路在纤维酸的作用中的作用.
- 检查PGC-1α调节对HepG2细胞中的脂质代谢和线粒体生物生成的影响.
主要方法:
- 在体内:C57BL/6J小鼠被食高脂肪饮食以诱导NAFLD,其中一组被给予纤维酸.
- 实验室内:HepG2细胞被FFAs处理,以创建血病的细胞模型,干预涉及PGC-1α过度表达的lentiviral载体.
- 分析包括肝脏/体重,血清生物化学,氧化应激标志物,线粒体功能测试,油红色O染色和西斑.
主要成果:
- 费诺纤维酸治疗显著改善了肝脏指标,减少了氧化应激,并改善了NAFLD小鼠的肝脏病理变化.
- 由FFA诱导的HepG2细胞表现出脂肪积累增加,氧化应激,线粒体碎片化,ATP生产减少.
- FFA治疗导致PPARα,PGC-1α,NRF-1和TFAM的表达减少,而PGC-1α过度表达逆转了这些影响,减少了脂质沉积和增强了线粒体功能.
结论:
- 纤维酸有效地改善NAFLD通过上调PPARα/PGC-1α通路,促进线粒体β氧化,并减少脂质积累和氧化应激.
- PGC-1α在调节脂质代谢和线粒体生物生成方面发挥着关键作用,其过度表达可以防止FFA诱导的肝损伤.
- 准PPARα/PGC-1α通路为管理NAFLD提供了潜在的治疗策略.
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