基底侧杏仁核中的网络状态预测了自愿饮酒的情况
bioRxiv : the preprint server for biology
|March 11, 2024
概括
酒精使用障碍 (AUD) 的风险可以通过酒精如何影响大脑活动来预测. 在底侧杏仁体中,在帕瓦胺内部神经元上的特定GABA受体的表达较低,与较高的酒精摄入量相关.
科学领域:
- 神经科学是一个神经科学.
- 成研究 研究成研究
- 分子精神病学分子精神病学
背景情况:
- 酒精使用障碍 (AUD) 影响的是少量饮酒者,但过渡到饮酒障碍的原因尚不清楚.
- 基底侧桃体 (BLA) 的活性变化与AUD有关,但其在滥用酒精中的确切作用尚未完全理解.
- GABAergic parvalbumin (PV) 内神经元和BLA中含GABA A受体的三角形子单元由酒精调节,并影响酒精摄入量和焦虑.
研究的目的:
- 为了研究酒精如何通过含有GABA A受体的三角形子单元对PV内部神经元的影响BLA网络状态.
- 为了确定BLA振荡状态,PV内部神经元受体表达和自愿饮酒之间的关系.
主要方法:
- 使用急性酒精暴露来测量BLA中的振荡状态.
- 自愿的乙醇消费被评估使用间歇性访问,饮酒在黑暗中的多重计划访问和慢性间歇性乙醇范式.
- 在酒精摄入量,在PV内部神经元上含有delta子单元的GABA A受体表达和在BLA中的马功率之间进行了相关性分析.
主要成果:
- 观察到平均酒精摄入量和含有三角形子单元的GABA A受体在PV 内神经元上的表达之间存在负相关性.
- 在初始酒精暴露后,BLA中的马功率与酒精摄入量也有负相关.
- 酒精调节BLA网络状态的程度可以预测未来的自愿饮酒量.
结论:
- 在BLA PV 内神经元上含有Delta子单元的GABA A受体表达与调节自愿酒精摄入有关.
- 由酒精调节的BLA网络状态可以作为酒精滥用风险的个体的生物标志物.
- 在BLA网络对酒精敏感性的个体差异影响自愿饮酒模式.
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