在前不使用药物的大型抑郁症患者的休息状态大脑活动的差异,包括有或没有自杀念头的患者
Ping Cao1, Ke Dai1, Xianwei Liu1
1Department of Radiology, Nanjing Brain Hospital, Affiliated Hospital of Nanjing Medical University, Nanjing, China.
The European journal of neuroscience
|March 22, 2024
概括
在有自杀念头 (SI) 的重度抑郁症 (MDD) 患者中,使用MRI识别了大脑活动差异. 这些发现可能有助于预测自杀风险,并指导MDD的早期干预.
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.
- 放射学 放射学是一门学科.
背景情况:
- 大型抑郁症 (MDD) 中的自杀念头 (SI) 与大脑活动的改变有关,但具体的神经相关性仍然不清楚.
- 了解这些神经支对于识别有风险的个体和开发有针对性的治疗方法至关重要.
研究的目的:
- 调查SI和没有SI的MDD患者和健康对照者 (HCs) 之间大脑活动和结构的神经差异.
- 为了确定潜在的神经成像标志物来预测MDD中自杀风险.
主要方法:
- 招募了82名第一期药物先验MDD患者 (41名SI,41名没有SI) 和41名HC.
- 收集了休息状态功能性MRI (fMRI) 和结构性MRI数据.
- 分析低频波动的分数振幅 (fALFF) 和灰色物质体积 (GMV),以确定群体之间的差异.
主要成果:
- 与HC相比,患有SI的MDD患者在右直肠,左中侧上额,中额和前额中增加了fALFF.
- 患有SI的患者表现出右侧副海马回,胰岛和中间尾回的GMV下降,以及左上额头回的GMV增加.
- 与没有SI的MDD患者相比,IS患者在左前骨中增加了fALFF,而这两组患者之间没有发现显著的GMV差异.
结论:
- 脑活动 (fALFF) 和结构 (GMV) 的独特模式区分了IS的MDD患者与没有SI和健康对照患者.
- 这些神经成像发现表明了MDD中自杀风险评估的潜在生物标志物.
- 确定的大脑区域可以作为早期治疗干预的目标,用于那些有自杀念头的人.
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