周心器官 - 脑下垂体电路 细胞内网膜 压力驱动在肥胖期间的肝硬化
1Department of Pharmacology and Physiology, George Washington University School of Medicine and Health Sciences, Washington, DC, USA.
Obesity (Silver Spring, Md.)
|October 4, 2023
概括
在特定的大脑神经元中的内质网膜 (ER) 压力有助于肥胖中非酒精性脂肪肝疾病 (NAFLD). 在下器官中准这种ER应激通路到下丘脑侧腔室核电路可以减少肝脏脂肪的积累.
科学领域:
- 神经科学是一个神经科学.
- 代谢性疾病研究研究
- 肝脏疾病的发病因子 肝脏疾病的发病因子
背景情况:
- 非酒精性脂肪性肝病 (NAFLD) 涉及过多的肝脂肪,并增加心脏代谢风险.
- 大脑内质网膜 (ER) 的压力越来越多地与NAFLD的发展有关.
- 在肥胖期间在NAFLD中特定神经回路的作用需要进一步研究.
研究的目的:
- 调查ER压力在周周器官-海马体神经回路中对肥胖期间NAFLD病变的贡献.
- 为了确定是否准ER压力在subfornical器官下垂体腹核 (SFOPVN) 途径影响NAFLD的发展.
主要方法:
- 使用高脂肪饮食 (HFD) 的小鼠模型,研究饮食诱导的肥胖.
- 采用组织学分析,病毒追踪和交叉病毒向.
- 综合体内生理学方法来评估ER压力和NAFLD标志物.
主要成果:
- 高脂肪饮食在下器官 (SFO) 中引发了显著的ER压力 (未折叠的蛋白质反应),特别是在SFOPVN神经元中.
- 在SFOPVN神经元中抑制ER压力减少了肝脏扩大 (肝壮壮症) 和肝脏肥胖症.
- 这种干预措施减轻了体重增加,但没有改变食物摄入量或能量消耗.
结论:
- 在SFOPVN神经回路内的ER压力是导致饮食诱导的肥胖症肝硬化的一个关键因素.
- 在这种特定的神经通路中调节ER压力为NAFLD提供了潜在的治疗点.
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