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一个用于从急性疼痛过渡到慢性疼痛的累积微电路

Yu-Mei Yu¹, Sun-Hui Xia², Zheng Xu²

¹Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou 221004, Jiangsu, China; Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou 221004, Jiangsu, China; NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou 221004, Jiangsu, China; Department of Anesthesiology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, Jiangsu, China.

Current biology : CB

|March 20, 2025

概括

持续的神经损伤会通过大脑变化引起慢性疼痛. 这项研究确定了一个核心 accumbens 微电路对于疼痛慢性化至关重要,建议早期干预目标.

科学领域:

神经科学是一个神经科学.
疼痛研究疼痛研究
系统神经科学系统神经科学

背景情况:

持续的感知输入可以导致中枢神经系统的不适应性变化,急性损伤转变为慢性疼痛.
驱动这种疼痛慢性化的特定大脑区域和机制在很大程度上是未知的.
理解这些机制对于开发有效的慢性疼痛疗法至关重要.

研究的目的:

确定关键的大脑区域和神经机制,从急性疼痛转变为慢性疼痛 (疼痛慢性化).
为了阐明核 (NAc) 在疼痛慢性化中的作用.
研究涉及调解神经病痛发展的特定微电路.

主要方法:

利用神经病痛小鼠模型研究神经元活动变化.
在急性阶段和慢性阶段内核内核内核 (NAcC) 中核内核外 (NAcS) 中测量的神经活动.
研究了NAcS神经元激活对于慢性疼痛发展的必要性和充分性以及多巴胺D2受体表达神经元的作用.

主要成果:

神经元活动在急性阶段 (<7天) 在NAcS增加,在神经病痛慢性阶段 (14-21天) 在NAcC增加.
在急性阶段NAcS神经元的激活对于慢性神经病痛的发展是必要的,也是充分的.
已识别的微电路涉及从NAcS投射到NAcC的多巴胺D2受体表达神经元.

结论:

一个特定的累积微电路,涉及NAcS到NAcC通过多巴胺D2受体表达神经元的投射,对于疼痛慢性化至关重要.
针对这种累积微电路的早期干预可能为预防或治疗慢性疼痛提供一种新的治疗策略.
这项研究为慢性疼痛发展的神经基础提供了关键的见解.

关键词:

在NAcC中,NAcC是NAcC.这就是NAcS.慢性约束性损伤是一种慢性约束性损伤.微电路微电路是一个微电路.神经病变性疼痛是一种神经性疼痛.它的核心是accumbens的核心.疼痛的慢性化疼痛的慢性化

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