功能性与结构性皮质缺陷模式生物标志物对于主要抑郁症障碍
Peter Kochunov1, Bhim M Adhikari1, David Keator2,3,4
1Department of Psychiatry and Behavioral Sciences, UTHealth Houston School of Behavioral Health Sciences, University of Texas Health Science Center at Houston, Houston.
JAMA psychiatry
|April 2, 2025
概括
大型抑郁症 (MDD) 功能性大脑异常与区域性低输液有关. 在MDD中区域同质性 (ReHo) 缺陷可能成为这种严重精神疾病的敏感生物标志物.
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.
- 医疗成像医学成像
背景情况:
- 大型抑郁症 (MDD) 主要表现为功能性脑部异常,而不是结构性变化.
- 在MDD中观察到的区域同质性 (ReHo) 缺陷可能与潜在的区域低流相关.
- 识别功能缺陷模式可以导致与病理生理学相关的MDD的基于大脑模式的生物标志物.
研究的目的:
- 确定皮层ReHo模式是否可以作为MDD的可复制生物标志物,可能比皮层厚度减少更敏感.
- 评估MDD中的ReHo缺陷模式是否反映了区域脑血流 (RCBF) 缺陷模式.
- 评估构建的区域脆弱性指数 (RVI) 是否可以作为MDD的简洁,基于大脑模式的生物标志物.
主要方法:
- 分析了四个数据集:英国生物银行 (UKBB),通过元分析增强神经成像遗传学 (ENIGMA),阿米什连接组项目 (ACP) 和阿门特诊所公司 (ACI).
- 包括来自UKBB和ENIGMA的ReHo和结构测量,以及来自ACP的ReHo,结构和RCBF数据.
- 在ACI样本中通过单光子发射计算机断层扫描测量RCBF数据.
主要成果:
- 患有MDD的参与者在特定的大脑区域 (,上叶,额叶) 呈现下皮层ReHo,而皮层厚度没有显著差异.
- ReHo MDD效应大小的区域模式与独立数据集中的RCBF模式有很强的相关性 (Pearson r = 0.52和0.46).
- 功能性RVI (ReHo和RCBF) 与结构性RVI (Cohen d = 0.090.20) 相比,显示出更强大的效果大小 (Cohen d = 0.330.90).
- 基于ReHo的RVI-MDD值升高与整个队列中抑郁症症状严重程度的增加有关.
结论:
- ReHo MDD 缺陷模式准确地反映了皮层的低流,并且在MDD中具有区域特异性.
- 基于ReHo的RVI显示出作为MDD敏感的功能生物标志物的潜力.
- 这些发现支持功能神经成像生物标志物的实用性,用于理解和诊断MDD.
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