在小鼠中,NAPE-PLD的遗传删除以情境依赖的方式改变了应激反应和HPA轴的功能
Taylor J Woodward1, Diana Dimen2, Emily Fender Sizemore2
1Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, 47405, USA; Program in Neuroscience, Indiana University, Bloomington, IN, 47405, USA.
Neuropharmacology
|October 5, 2025
概括
酶N-酸酸乙醇胺酸酶-D (NAPE-PLD) 调节了压力和焦虑. 缺乏NAPE-PLD的小鼠表现出改变的应激反应和类似焦虑的行为,表明它在情绪弹性中的作用.
科学领域:
- 神经科学是一个神经科学.
- 内分泌学 在内分泌学.
- 行为科学 行为科学
背景情况:
- 内分泌系统,包括安纳米德 (AEA),影响压力和下丘脑-垂体-上腺 (HPA) 轴活动.
- N-酸酸乙醇胺酸酶-D (NAPE-PLD) 合成了AEA和相关的N-酸乙醇胺 (NAE).
- NAPE-PLD活动对压力反应的行为影响在很大程度上仍未被探索.
研究的目的:
- 研究NAPE-PLD在调节应激反应和焦虑类行为中的作用.
- 为了确定减少AEA和NAE合成是否影响行为和荷尔蒙应激适应.
- 评估NAPE-PLD缺陷对HPA轴活动的影响.
主要方法:
- 在行为测试中比较野生型 (WT) 和NAPE-PLD淘汰赛 (KO) 鼠标.
- 使用开放场测试评估类似焦虑的行为.
- 对捕食者气味 (TMT) 和HPA轴反应 (c-Fos,皮质) 的应激反应的评估.
主要成果:
- NAPE-PLD KO小鼠表现出类似焦虑的行为和对捕食者气味的改变反应.
- 在KO小鼠中,HPA轴中的神经元激活因上下文而异调.
- 雄性KO小鼠表现出过度的皮质释放,表明性二态HPA轴的失调.
结论:
- NAPE-PLD酶活性对于调节情绪性和压力恢复至关重要.
- 缺乏NAPE-PLD会导致失调的应激反应和焦虑.
- 这些发现突出了NAPE-PLD在HPA轴功能和应激适应中的性二态作用.
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