非人类灵长类动物的下丘脑神经元激活驱动着自然主义的目标导向的饮食行为
Leslie Jaesun Ha1, Hyeon-Gu Yeo2, Yu Gyeong Kim2
1Department of Biomedical Sciences, Neuroscience Research Institute, Wide River Institute of Immunology, Seoul National University College of Medicine, Seoul, Republic of Korea.
Neuron
|April 25, 2024
概括
在中激活侧面下丘脑区域GABAergic (LHA) 神经元增加了食物动机和目标导向的饮食行为. 这项研究提供了关于灵长类动物进食和潜在的肥胖治疗方法的见解.
科学领域:
- 神经科学是一个神经科学.
- 行为科学 行为科学
- 代谢研究研究 代谢研究
背景情况:
- 不适应的食行为推动了现代肥胖.
- 侧下垂体区域 (LHA) 参与进食,但缺少灵长类动物证据.
- 在LHA中的GABAergic神经元调节养行为.
研究的目的:
- 为了研究LHAGABAergic (LHAGABA) 神经元在灵长类动物的自然饮食行为中的作用.
- 探索LHAGABA神经元激活对食物动机和目标导向行动的影响.
- 了解 LHAGABA介导的养背后的神经电路.
主要方法:
- 化学遗传学在三只身上被用来选择性地激活LHAGABA神经元.
- 定子发射断层扫描 (PET) 和磁共振光谱 (MRS) 验证了化学遗传学操纵.
- 休息状态功能磁共振成像 (rs-fMRI) 评估了功能连接 (FC) 的变化.
主要成果:
- LHAGABA神经元的激活显著增加了目标导向的行为和食物动机,特别是在美味的食物.
- 使用PET和MRS证实了化学遗传激活.
- rs-fMRI显示LHA和额头区域之间增加了FC,并在额头皮层内减少了FC.
结论:
- LHAGABA神经元在调节灵长类动物的饮食行为中起着至关重要的作用.
- 准LHAGABA神经元可能代表人类肥胖的新疗法策略.
- 这项研究提供了第一个基于灵长类动物的证据,证明LHA在自然养中的作用.
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