在主要抑郁症和泛性焦虑症中,甲状腺皮质电路的异常功能梯度在重大抑郁症和泛性焦虑症中异常
Qiangli Dong1, Xiaotong Li2, Qin Zhang2
1Department of Psychiatry, Lanzhou University Second Hospital, Lanzhou 730000, Gansu, PR China.
Journal of affective disorders
|February 18, 2025
概括
重度抑郁症 (MDD) 和泛性焦虑症 (GAD) 显示大脑功能梯度发生变化,特别是在丘脑皮层连接中. 这些变化与症状相关,可以帮助区分MDD和GAD.
科学领域:
- 神经科学是一个神经科学.
- 神经成像是一种神经成像.
- 精神病学是一个精神病学.
背景情况:
- 功能梯度分析揭示了大脑的宏观组织.
- 大型抑郁症 (MDD) 和泛性焦虑症 (GAD) 中的脑皮层梯度差异尚未得到充分理解.
- 研究这些差异可以确定MDD和GAD的疾病特异的神经机制.
研究的目的:
- 为了研究MDD,GAD和健康对照 (HCs) 之间的thalamo-cortical功能梯度的差异.
- 探索功能梯度变化,临床症状和MDD和GAD中的基因表达之间的关系.
- 评估甲状腺皮层梯度的诊断潜力,以区分MDD和GAD.
主要方法:
- 休息状态功能性MRI数据来自88名HC患者,53名MDD患者和28名GAD患者.
- 功能梯度分析,以检查甲状腺皮层电路组织.
- 偏心率指数的计算,以量化体声素分离.
主要成果:
- MDD和GAD表现出异常的功能梯度,与 thalamus 与背部注意力 (DorsAttn) 和体力运动 (SomMot) 网络的连接有关.
- 与HC相比,MDD和GAD两组都显示出全球偏心率下降;MDD显示出显著的减少.
- 异常梯度组织与临床症状和基因表达相关;使用这些特征,MDD和GAD可以以>72%的准确度区分.
结论:
- 在MDD和GAD中观察到Thalamo-DorsAttn和Thalamo-SomMot连接梯度的显著变化.
- 这些发现表明,在MDD和GAD的病因学中,改变梯度组织的潜在作用.
- 乳头皮层功能梯度可以作为诊断MDD和GAD的有价值的生物标志物.
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