与健康对照人群相比,严重阿片类药物使用障碍患者的网络连接和动态的任务相关差异与健康对照人群相比
Danielle L Kurtin1, Katherine Herlinger2, Alexandra Hayes2
1Division of Psychiatry, Faculty of Medicine, Imperial College London, London, UK. danielle.kurtin18@imperial.ac.uk.
Translational psychiatry
|February 3, 2026
概括
患有严重阿片类药物使用障碍 (sOUD) 的个人表现出大脑连接的改变,连接通常较弱,但与认知控制相关的奖励网络相互作用增强. 这些大脑差异与受体的可用性相关,为新的治疗提供了洞察力.
科学领域:
- 神经科学是一个神经科学.
- 成研究 研究成研究
- 神经成像是一种神经成像.
背景情况:
- 严重阿片类药物使用障碍 (sOUD) 呈现出重大未满足的治疗需求.
- 患有SUD的个体表现出改变了大脑奖励回路对货币和药物线索的反应.
- 在sOUD中,奖励处理和认知/注意力失调之间的关系尚不清楚.
研究的目的:
- 研究SOUD患者的奖励网络中的功能连接 (FC) 变化.
- 探索奖励网络变化与参与认知和注意力的网络之间的关系.
- 检查大脑功能差异与μ-阿片类受体 (MOR) 和多巴胺D2受体 (DRD2) 可用性之间的空间相关性.
主要方法:
- 功能性磁共振成像 (fMRI) 用于在甲 (MD) 和健康对照 (HC) 上sOUD的个体.
- 参与者完成了货币激励延迟 (MID) 任务和提示反应任务.
- 分析包括功能连接 (FC),大脑状态动态和部分最小平方 (PLS) 来将FC与受体可用性联系起来.
主要成果:
- 患有MD的参与者通常比HC表现出较弱的内在功能连接 (miFC).
- 作为回应奖励或与药物相关的线索与中性的线索,MD参与者在奖励/反奖励网络和控制/默认模式网络 (DMN) 之间表现出更强的miFC.
- 在MID任务期间,DMN在MD参与者中更为普遍,PLS分析显示了受体可用性和连接性指标之间的空间相关性.
结论:
- 患有sOUD的个体表现出独特的神经相互作用模式,包括降低整体FC,但在奖励和认知控制区域之间增强了连接.
- 在sOUD中改变的大脑连接的空间与MOR和DRD2可用性相对应.
- 这些发现提供了关于sOUD中奖励处理缺陷的神经基础的见解,并可能指导神经调节疗法.
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