青少年和年轻成年人双极性抑郁症的功能异常与混合特征:静止状态fMRI的见解
Shujia Hu1, Hao Sun2, Ciqing Bao3
1Department of Psychiatry, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, 210029, China; Department of Psychiatry, Huzhou Third Municipal Hospital, The Affiliated Hospital of Huzhou University, Huzhou, 313000, China.
Journal of psychiatric research
|September 5, 2025
概括
双极性抑郁症有混合特征, 显示特定区域的大脑活动增加, 这些发现可能有助于确定这种疾病的生物标志物及其相关风险.
科学领域:
- 神经科学
- 精神病学
- 医学成像
背景情况:
- 双极性抑郁症与混合特征 (BD-MF) 是双极性障碍 (BD) 的一个独特的亚型.
- 它的神经生物学基础尚未得到充分理解.
- 情绪不稳定,冲动和自杀风险是BD-MF的特征.
研究的目的:
- 使用静止状态功能磁共振成像 (fMRI) 调查 BD-MF 的神经生物学机制.
- 在BD-MF患者中识别功能性脑部异常.
- 将大脑活动与临床症状联系起来.
主要方法:
- 招募的青少年和年轻人患有双极性抑郁症和健康对照 (HC).
- 根据DSM-5标准将患者分为BD-MF,双极性抑郁症没有混合特征 (BD-nMF) 和HC组.
- 使用低频波动的平均分数幅度 (mfALFF) 分析休息状态的fMRI数据,并与临床评估相关的发现 (HAMD-17,HAMA,YMRS).
主要成果:
- 与BD-MF和HC患者相比,BD-MF患者在右前,左下叶和右中前环中显著增加了mFALFF.
- 右前活动与混合特征和动荡相关.
- 左下叶活动与自杀风险相关,右中额头活动与混合特征相关.
结论:
- 在BD-MF中发现右前,左下叶和右中额头的脑活动增加.
- 这些区域可以作为BD-MF的神经成像生物标志物.
- 激活模式与关键的临床特征相关,包括混合特征,激动和自杀风险.
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