一个小脑和网络的反翻译识别
Aloysius Y T Low1, Nitsan Goldstein1, Jessica R Gaunt2
1Department of Biology, University of Pennsylvania, Philadelphia, PA, USA.
Nature
|November 18, 2021
概括
科学家们在小脑中发现了一个控制食欲的新中心. 激活这些神经元会通过发出腹信号来减少饮食,
科学领域:
- 神经科学
- 代谢调节
- 遗传学
背景情况:
- 肥胖的流行需要探索已知的养途径.
- 了解体重平衡需要新的神经电路识别.
研究的目的:
- 通过反向翻译方法识别和描述促进和的神经元组.
- 研究小脑在调节食物摄入量和体重方面的作用.
主要方法:
- 基于任务的功能磁共振成像 (fMRI) 在人类.
- 在小鼠中进行转录组分析和神经元激活研究.
- 研究小脑对食物线索和肠道营养输液的反应.
主要成果:
- 在前脑深核 (aDCN) 中识别出不同的神经元,通过食激活.
- 选择性aDCN神经元激活减少了食大小而没有改变代谢速度.
- aDCN活动增加了条形多巴胺,并减弱了随后的食物奖励信号.
结论:
- 前深小脑核 (aDCN) 作为一个保存的和中心.
- 这种神经回路为控制过度饮食和肥胖提供了潜在的治疗目标.
- 一种"从床上到床上"的方法对于发现影响行为的神经回路是有效的.
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