高脂肪饮食通过促进肝细胞巨细胞的炎症性两极分化促进多次狂饮诱导的肝损伤
Yi-Ran Wang1, Na Xie2, Yan-Jing Zhang1
1Institute of Toxicology, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China.
Toxicology research
|July 3, 2023
概括
高脂肪饮食和乙醇通过促进M1巨细胞两极分化,协同导致肝损伤. 这项研究揭示了肝肥胖症如何通过炎症途径加剧乙醇诱导的肝损伤.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 免疫学 免疫学 免疫学
- 毒理学 毒理学 毒理学
背景情况:
- 高脂肪饮食 (HFD) 和乙醇消费可以导致肝损伤.
- M1极化巨细胞与乙醇诱导的肝损伤有关.
- 在肝脏损伤上,HFD诱导的肝脏肥胖症和乙醇之间的协同机制需要进一步研究.
研究的目的:
- 通过增强肝脏巨细胞M1极化,调查肝脏肥胖症是否促进乙醇诱导的肝损伤.
- 阐明HFD和乙醇对肝炎的联合作用背后的分子机制.
主要方法:
- 在体内研究中,使用小鼠食HFD并接受乙醇狂饮协议.
- 使用暴露于自由脂肪酸 (FFAs) 和乙醇的小鼠肝细胞和巨细胞进行了体外研究.
- 对巨细胞极化标记物 (F4/80,Ccl2,Tnfa,Il1b),炎症信号通路 (IKKα/β,IκBα,p65) 和与亡相关的蛋白质 (Caspase 1,NLRP3) 的分析.
主要成果:
- HFD与多次乙醇狂欢相结合,在小鼠肝脏中协同增加了M1巨细胞标记物和炎症调解剂.
- 自由脂肪酸 (FFAs) 在体外加剧了乙醇诱导的巨细胞的炎症性两极分化.
- 乙醇暴露调节了FFA诱导的肝细胞效应,同时增加了巨细胞的炎症反应.
结论:
- HFD和多次乙醇狂欢协同诱导肝损伤.
- 这种协同效应是通过促进肝脏中促炎性M1巨细胞激活来实现的.
- 了解这些机制对于开发针对饮食和酒精相关肝病的治疗策略至关重要.
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