功能磁共振成像在自杀企图中的交替个体及其与基因表达的关联
Yurong Jiang1, Yujing Zhou2, Yingying Xie1
1Department of Radiology, Tianjin Key Laboratory of Functional Imaging & Tianjin Institute of Radiology, Tianjin Medical University General Hospital, Tianjin 300052, China.
NeuroImage. Clinical
|July 26, 2024
概括
有过自杀未遂 (SA) 史的个人表现出大脑活动模式的改变. 这项研究将这些功能磁共振成像 (fMRI) 变化与特定的基因表达特征联系起来,这表明了神经生物学基础.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
- 精神病学是一个精神病学.
背景情况:
- 曾经有过自杀未遂 (SA) 的个人被诊断为抑郁症 (DD) 或双相情感障碍 (BD) 的人表现出大脑活动的改变.
- 以前的功能磁共振成像 (fMRI) 研究突出了这些变化,但自发大脑活动模式和遗传相关性需要进一步探索.
研究的目的:
- 为了研究自发性脑活动变化,在有过自杀未遂 (SA) 病史的患者.
- 分析这些fMRI变化的基因相关性与基因表达特征.
主要方法:
- 一个基于voxel的对19项研究 (26个数据集) 的元分析,涉及742名SA患者和978名对照.
- 通过部分最小平方回归,使用艾伦人类大脑图谱检查fMRI变化并分析基因表达的关联.
主要成果:
- 在SA患者中,双边下回,海马,状回和右侧胰岛的活性增加,双边偏中心叶片和下额头回的活性降低.
- 确定了5077个具有与SA相关的fMRI变化相关的表达模式的基因,这些基因对谷氨酸突触和线粒体结构功能进行了丰富.
- 这些基因在脑组织,神经元细胞和早期发育过程中被特别表达.
结论:
- 研究结果表明,在SA患者中,fMRI异常的神经生物学依据是DD或BD.
- 这些结果可能会为未来的预防自杀的遗传和治疗研究提供信息.
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