一个杏仁质蛋白通路促进摄入的运动程序
Danielle S Lafferty1, Jeremiah Isaac1, Joelyz S Wolcott1
1Diabetes, Endocrinology, and Obesity Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
bioRxiv : the preprint server for biology
|June 26, 2025
概括
中枢桃体 (CeA) 的子通路可以通过激活养行为来驱动过度饮食,取代充实感. 这个大脑电路促进了超越基本代谢需求的灵活,目标导向的饮食.
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
- 生理学 生理学 生理学
背景情况:
- 动物往往会因为外在因素 (如口感或环境) 而取代内部的腹信号.
- 允许动物忽略腹提示并继续进食的神经机制尚未完全理解.
研究的目的:
- 为了研究特定前脑-脑干路径的作用,中央桃体 (CeA) 到背侧子 (CeA) 在调节养行为的作用.
- 为了确定这种途径是否影响腹信号或促进消化行为.
主要方法:
- 检查了CeApons通路,针对的是副手臂和副手臂核.
- 在食期间记录了这个途径中的神经活动,并将其与行为相关联.
- 在各种条件下,在动物中使用CeA
通路的光遗传刺激.
主要成果:
- CeApons通路的活性与行为相关,但独立于代谢状态或食物的可口性.
- 刺激CeApons通路诱导过度进食,消费非食用物品,以及类似于摄入的运动行为 (,).
- 刺激的效果各不相同,这表明消费性运动回路的招募,而不是仅仅抑制腹感.
结论:
- CeApons通路在促进养行为中发挥着至关重要的作用,这种行为取代了恒常的腹信号.
- 这条通路通过启动运动控制回路来促进灵活的,以目标为导向的摄入状态.
- 前脑-脑干相互作用是理解如何启动和维持基本生理需求之外的食行为的关键.
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