对缺陷精神分裂症和非缺陷精神分裂症的脑功能内型的多基因效应
Jin Fang1, Yiding Lv1, Yingying Xie2
1Department of Geriatric Psychiatry, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, Jiangsu, 210029, China.
这项研究发现,与其他组相比,缺陷精神分裂症 (DS) 患者的精神分裂症 (PRS-SCZ) 多基因风险得分较低. 这些遗传分数与特定的大脑功能变化相关,为精神分裂症病原体提供了新的见解.
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.
- 遗传学 是一个遗传学.
背景情况:
- 缺陷精神分裂症 (DS) 是精神分裂症 (SCZ) 的一个亚型.
- 对DS中神经成像变化的多基因效应在很大程度上是未知的.
- 了解DS中对大脑功能的遗传贡献对于阐明其病变发生至关重要.
研究的目的:
- 在DS患者中计算精神分裂症的多基因风险得分 (PRS-SCZ).
- 在DS中探索PRS-SCZ和功能性大脑特征之间的关联.
- 调查DS与非缺陷精神分裂症 (NDS) 中神经成像的多基因差异效应.
主要方法:
- 计算了PRS-SCZ使用整体外序列和GWAS数据.
- 从DS,NDS和健康对照 (HC) 获得休息状态fMRI,生化和神经认知数据.
- 分析了低频波动的振幅 (ALFF),区域同质性 (ReHo) 和功能连接性 (FC);进行了相关性分析.
主要成果:
- 与NDS和HC相比,PRS-SCZ在DS中明显较低.
- 与NDS相比,DS在左下和额头回旋中表现出增加的ALFF,在右前中减少的ALFF,并在右中额头回旋中减少的ReHo.
- 在DS中观察到广泛的功能连接变化,特别是在默认模式网络内,与PRS-SCZ相关.
结论:
- 证明了对DS患者大脑功能变化的差异性多基因效应.
- 确定了与DS相关的特定神经成像遗传关联.
- 提供了一个潜在的神经成像遗传视角,以了解精神分裂症的发病.
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