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在D1和D2表达核中,PACAP会诱导D1和D2表达核中中等棘手神经元的兴奋度增加

S Ortega-Tinoco¹, M Padilla-Orozco², F Hernández-Vázquez¹

¹Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), Ciudad de México 04510, Mexico.

Brain research bulletin

|March 27, 2025

概括

下垂体腺酸环酶激活聚类 (PACAP) 鼻喷剂在小鼠中减少过度饮食. 这种调节了核中的活动,这是一个对食物动机和奖励至关重要的大脑区域.

科学领域:

神经科学是一个神经科学.
神经生物学神经生物学神经生物学
行为科学行为科学

背景情况:

暴饮暴食是与肥胖有关的重要饮食障碍.
核 (NAc),特别是它的外子区域 (NAcSh),对于处理美味食物的有益方面至关重要.
pituitary adenylate cyclase-activating polypeptide (PACAP) 降低了可口的食物摄入量,当给NAc,表明其治疗性潜在的暴饮暴食.

研究的目的:

研究PACAP如何影响NAcSh中神经元活动的机制.
确定PACAP对表达D1和D2受体的中等棘状神经元 (MSN) 的作用.
为了评估鼻内PACAP在暴饮暴食的小鼠模型中的疗效.

主要方法:

在D1-Cre和A2A-Cre小鼠的NAcSh脑切片中进行全细胞记录和成像.
电生理学记录以评估MSN活动.
在吃得过多的小鼠模型中,通过鼻喷雾给PACAP.

主要成果:

在NAcSh中,PACAP管理显著提高了表达D1和D2的MSN的发射率.
在被测试的小鼠模型中,鼻内PACAP的使用有效地减少了暴饮暴食行为.
这些发现阐明了PACAP对参与奖励处理的关键神经元群体的作用.

结论:

在NAcSh中,PACAP调节MSN的活动,这表明它对食物摄入的影响有直接的神经通路.
鼻腔PACAP为缓解暴饮暴食行为提供了一个有希望的,非侵入性的治疗策略.
对PACAP神经生物学机制的进一步研究可能会导致饮食障碍的新治疗方法.

关键词:

吃得过多,吃得过多,就是吃得过多.中等的刺状神经元.原子核是一个的外.这就是PacaPap的意义.

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