在有或没有娱乐性胺使用的人群中,海马体子场的差异:来自多模式神经成像的见解
Yi-Hsuan Liu1,2, Chia-Chun Hung3,4, Marc N Potenza5,6,7,8,9
1Institute of Neuroscience, National Yang Ming Chiao Tung University, Taipei, Taiwan.
娱乐性胺使用与心理困扰和工作记忆障碍有关. 这项研究发现,在胺类药物使用者中,左海马体积减少和大脑连接性改变,与N-甲基-D-酸盐受体分布相关.
科学领域:
- 神经科学是一个神经科学.
- 精神病学是一个精神病学.
- 成 药物 药物 药物 药物
背景情况:
- 全球娱乐性胺使用的增加需要了解其神经和精神影响.
- 临床前模型表明胺会影响海马和工作记忆,但对特定亚区域的人类数据有限.
- 吸烟是台湾一个常见的胺剂的管理方法,影响行为特征.
研究的目的:
- 描述基他胺使用模式和使用者的精神症状.
- 为了比较基他胺使用者和仅使用烟草的使用者之间的工作记忆和情感行为.
- 研究与神经递质受体相关的海马亚区域体积和功能连接性的差异.
主要方法:
- 一项涉及认知测试和神经成像的横截面病例对照研究.
- 从台湾社区招募了58名胺使用者 (KU) 和73名烟草使用者 (TU).
- 评估了胺使用,精神症状,工作记忆 (N-back),情感行为,海马体积 (FreeSurfer) 和功能连接 (FC).
主要成果:
- 较重的胺使用与增加的心理痛苦,焦虑和敌意相关.
- 胺类药物使用者在较高的认知负载下显示工作记忆精度受损.
- 在胺胺使用者中观察到左海马体积减少,特别是在海马-桃体-过渡区域 (HATA).
- 发现左HATA和各种大脑区域之间的功能连接性增加,与NMDA受体密度有关.
结论:
- 吸烟和服用胺类药物的使用与剂量依赖的精神症状和负载依赖的工作记忆缺陷有关.
- 海马子子区域的选择性体积差异和改变的网络连接,与NMDA受体分布保持一致,与胺使用有关.
- 研究结果强调了娱乐类胺的神经生物学影响,特别是在海马体和相关的大脑网络上.
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