多发性硬化症中恐惧和焦虑的神经行为机制
Lil Meyer-Arndt1,2,3,4,5, Rebekka Rust1,2,3,6, Judith Bellmann-Strobl1,2,3
1Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany.
Communications medicine
|August 9, 2025
概括
多发性硬化症 (MS) 中的焦虑与恐惧过度泛化有关,个人认为非威胁性刺激是危险的. 像海马体和胰岛等区域的脑成像和网络完整性是这种MS焦虑的关键指标.
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.
- 医疗成像医学成像
背景情况:
- 焦虑是多发性硬化症 (MS) 的常见,经常被忽视的并发症.
- 在MS焦虑中处理恐惧的神经行为机制尚不清楚.
- 改变恐惧处理是其他患者群体焦虑的一个已知的特征.
研究的目的:
- 研究恐惧泛化机制在患有多发性硬化症的人群中焦虑的发展中的作用.
- 探索MS焦虑中恐惧处理的神经生物学基础.
主要方法:
- 招募了三组:患有多发性硬化和焦虑症的人 (n=18),没有焦虑症的多发性硬化的人 (n=36),和健康的人 (n=23).
- 在恐惧概括任务中利用功能性MRI (fMRI) 来评估恐惧处理.
- 使用扩散加权MRI进行基于图形的结构连接体分析.
主要成果:
- 患有MS和焦虑症的人表现出恐惧过度泛化,类似于非MS焦虑症人群.
- 一个在健康个体上训练的机器学习模型,使用fMRI数据成功预测了MS群体中的恐惧概括.
- 海马和前胰岛活动和结构完整性对于MS的恐惧泛化至关重要,完整性降低表明焦虑.
结论:
- 与MS相关的焦虑主要以恐惧过度泛化为特征.
- 共享的恐惧处理机制有助于MS患者的焦虑,通过使用机器学习进行交叉解码证明了这一点.
- 特定大脑区域的结构网络完整性是MS中焦虑的直接指标.
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