食物和水的摄入受到通过使用交叉遗传学揭示的独特的中央杏仁体电路的调节
Federica Fermani1, Simon Chang2, Ylenia Mastrodicasa1
1Department of Molecules - Signaling - Development, Max-Planck Institute for Biological Intelligence, Martinsried, Germany.
Nature communications
|March 29, 2025
概括
特定的中枢桃体 (CeM) 中部神经元组控制食物和水的摄入. 这些独特的CeM电路评估食欲刺激以驱动饮食行为.
科学领域:
- 神经科学是一个神经科学.
- 行为神经科学 行为神经科学
背景情况:
- 中枢桃体 (CeA) 对于防御性和食欲性行为至关重要.
- 它包括囊 (CeC),侧面 (CeL) 和中间 (CeM) 亚区域的基因上不同的GABAergic神经元亚群.
- 这些CeA神经元子群在食欲行为中的确切作用尚未完全理解.
研究的目的:
- 研究基因定义的CeA神经元子群在调节食物和水消耗方面的特定作用.
- 阐明参与食欲行为的CeM神经元亚型之间的功能差异.
主要方法:
- 在小鼠中利用交叉遗传学来精确地对神经元群体进行基因向.
- 在体内使用成像来监测食欲行为期间的神经活动.
- 研究了CeM神经元子群体的解剖连接性.
主要成果:
- 确定驱动食物或水消耗的神经元仅位于CeM内.
- 发现了不同的CeM亚群,负责仅饮用水,而不是饮用水和饮用食物.
- 发现促进食的CeMHtr2a神经元会响应食欲的线索,而不管身体属性如何.
- 确定参与饮酒的CeMSst神经元对刺激的物理性质敏感.
- 从CeL观察到抑制输入到CeM亚型和投射到对手臂核.
结论:
- 独特的CeM微电路专门用于评估液体和固体食欲刺激.
- 这些电路在驱动适当的饮食和饮食行为反应方面发挥着至关重要的作用.
- 这些发现突显了CeM对食欲行为调节的功能异质性.
更多相关视频
07:24Combining Quantitative Food-intake Assays and Forcibly Activating Neurons to Study Appetite in Drosophila
Published on: April 24, 2018
7.8K
05:15Author Spotlight: Accessible M&M-Based Mouse Model for Investigating Binge Eating Disorder - Insights into Eating Behaviors, Anxiety, and Neural Mechanisms
Published on: January 10, 2025
1.6K
相关概念视频
01:37Neural Regulation
34.8K
Digestion begins with a cephalic phase that prepares the digestive system to receive food. When our brain processes visual or olfactory information about food, it triggers impulses in the cranial nerves innervating the salivary glands and stomach to prepare for food.
34.8K
01:15Functional Brain Systems: Limbic System
8.8K
The limbic system, often called the "emotional brain," is a complex set of structures located deep within the brain. The intricate network of the limbic system supports a wide range of psychological functions, from emotional regulation to memory formation and sensory processing. This functional brain region encompasses specific parts of the diencephalon and the cerebrum, integrating the higher mental functions of the cerebral cortex with the primitive emotional responses of the deep brain...
8.8K
01:30Regulation of Food Intake
2.8K
Short-term regulation of food intake primarily involves neural signals from the gastrointestinal (GI) tract, blood nutrient levels, and GI tract hormones. Communication between the gut and brain via vagal nerve fibers plays a significant role in evaluating the contents of the gut. Clinical studies have shown that protein ingestion produces a more prolonged response in these nerve fibers compared to an equivalent amount of glucose. Additionally, the activation of stretch receptors caused by GI...
2.8K
01:16Role of Amygdala in Memory
1.9K
The amygdala is a small, almond-shaped structure responsible for processing and storing memories, particularly those linked to emotions like fear and stress. It plays an essential role in the brain's response to emotionally significant events and often enhances memory formation by triggering stress hormone release. The amygdala is vital for encoding and retrieving memories associated with fear or stress, a process that is adaptive by helping organisms avoid dangerous situations.
One of the...
One of the...
1.9K