大型抑郁症中大脑白质的受试者间功能变异性变化及其与基因表达特征的关联
Qun Gai1,2,3, Tongpeng Chu1,2,3, Qinghe Li4
1Department of Radiology, Yantai Yuhuangding Hospital, Qingdao University, Yantai, Shandong, China.
Human brain mapping
|March 30, 2024
概括
这项研究揭示了大抑郁症 (MDD) 中白质功能连接性变异性的显著变化. 这些变化有助于区分MDD患者并预测症状严重程度,为疾病提供了新的见解.
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.
- 神经成像是一种神经成像.
背景情况:
- 重度抑郁症 (MDD) 是一种异质的疾病,其机制尚不清楚.
- 之前的研究指出,灰色物质的功能连接性变异性发生了变化,但白质的变化仍未被探索.
研究的目的:
- 为了研究MDD中的白物质主体间功能连接性变异性 (WM-IVFC).
- 探索WM-IVFC与MDD认知功能,临床症状和基因表达特征的关联.
主要方法:
- 休息状态功能性MRI数据来自MDD患者和健康对照 (HC) 的发现和验证队列.
- 组间WM-IVFC的比较,认知功能的评估,MDD患者的分类和临床症状的预测.
- 使用艾伦人类大脑图谱和基因功能分析进行转录组神经成像关联分析.
主要成果:
- 与HC患者相比,在MDD患者中发现了广泛的WM-IVFC改变.
- 与感觉运动和更高阶认知功能相关的WM-IVFC变化.
- 歧视性WM-IVFC有效地对MDD患者进行了分类 (AUC为0.889-0.901),并预测了抑郁症严重程度 (r=0.575) 和自杀风险 (r=0.384).
- 与变性相关的基因在突触和神经元通路中被丰富,主要在刺激和抑制神经元中.
结论:
- 这项研究确定了MDD中大脑白质功能连接性变异性的显著变化.
- WM-IVFC的改变与认知缺陷和临床症状有关,包括抑郁症严重程度和自杀风险.
- 这些发现表明潜在的遗传基础,并为了解MDD的临床异质性提供意义.
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