在患有抑郁症和自杀企图的青少年中,杏仁体子区域的异常静止状态功能连接
Shao-Chen Cheng1,2, Yong-Ming Wang3, Yu-Tong Li1
1Department of Imaging and Nuclear Medicine, Jiamusi University, Jiamusi 154007, Heilongjiang Province, China.
World journal of psychiatry
|January 29, 2026
概括
患有严重抑郁症 (MDD) 和自杀企图的青少年在杏仁体子区域的静止状态功能连接 (rsFC) 发生变化. 大脑网络中的这些神经变化提供了对抑郁青年自杀行为机制的见解.
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:
- 自杀是全球青少年死亡的主要原因.
- 青少年主要抑郁症 (MDD) 中自杀行为的神经机制尚不清楚.
- 杏仁体中静止状态功能连接 (rsFC) 的改变与抑郁和自杀行为有关.
研究的目的:
- 研究杏仁体子区域和全脑网络之间的rsFC变化.
- 检查MDD和自杀企图 (sMDD) 的青少年患者与没有 (nsMDD) 和健康对照 (HC) 的青少年患者之间的差异.
主要方法:
- 获取了32名sMDD,33名nsMDD和34名HC青少年的静止状态功能磁共振成像 (rsFC) 数据.
- 定义横向和中间杏仁体 (MeA) 作为感兴趣的区域.
- 比较了rsFC模式,并检查了与临床症状严重程度的关联.
主要成果:
- 与 nsMDD 组相比,sMDD 组显示右侧杏仁体 (LA) 和尾环之间rsFC 减少.
- 与HC相比,sMDD和nsMDD两组都在副海马回形 (PHG) 和状回形中表现出异常的rsFC.
- 在sMDD中,右MeA和极之间的rsFC与自尊相有负相关,左LA和右PHG之间的rsFC与人际关系压力相有正相关.
结论:
- 杏仁体子区域和特定大脑区域之间的异常rsFC为患有MDD的青少年自杀企图的神经基础提供了新的见解.
- 这些发现突出了杏仁体连接在这种人群中自杀行为病理生理学的作用.
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