杏仁核的反应性,抗抑郁药的停止,和复发
Tore Erdmann1, Isabel M Berwian2,3, Klaas Enno Stephan3,4
1Applied Computational Psychiatry Lab, Mental Health Neuroscience Department, Division of Psychiatry and Max Planck Centre for Computational Psychiatry and Ageing Research, Queen Square Institute of Neurology, University College London, London, United Kingdom.
JAMA psychiatry
|September 11, 2024
概括
停止服用抗抑郁药物会增加复发的风险. 停止服用药物后桃体反应性增加与抑郁症复发有关,作为临床决策的潜在标志物.
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.
- 神经成像是一种神经成像.
背景情况:
- 停用抗抑郁药物显著增加了抑郁复发的风险.
- 这种复发风险的神经生物学基础在很大程度上是未知的.
- 杏仁体对负面刺激的反应性是抑郁症情感处理的关键指标,由抗抑郁药物治疗调节.
研究的目的:
- 为了确定桃体对负面面部情绪的反应性是否在抗抑郁药物停用后发生变化.
- 调查杏仁体活性变化与随后抑郁复发风险之间的关联.
主要方法:
- 长度观察性研究 (Antidepressiva Absetzstudie [AIDA]) 涉及缓解大抑郁症 (MDD) 的患者.
- 两个基于任务的功能磁共振成像 (fMRI) 扫描测量杏仁核的反应性.
- 在第二次fMRI扫描之前或之后随机停止服用抗抑郁药物,并对复发进行6个月的监测.
主要成果:
- 最初的杏仁体反应性在缓解的MDD患者和健康对照人群之间没有差异.
- 停药后杏仁体反应率的增加与抑郁症复发有显著的关联 (P=.04).
- 杏仁体反应率的变化预测了复发的时间更短,并预测了复发 (平衡准确率为67%).
结论:
- 停用抗抑郁药物后桃体反应性增加与抑郁复发风险更高有关.
- 杏仁体反应的这种变化可能作为功能神经成像标记物.
- 这些发现可以为管理戒断抗抑郁药物的临床策略提供信息.
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