Decreased Resting-State Connectivity between Neurocognitive Networks in Treatment Resistant Depression.

Decreased Resting-State Connectivity between Neurocognitive Networks in Treatment Resistant Depression.
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DOI:
10.3389/fpsyt.2015.00028
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发表时间:
2015
影响因子:
4.7
通讯作者:
Denys D
Denys D
中科院分区:
医学3区
文献类型:
--
作者:
de Kwaasteniet BP;Rive MM;Ruhé HG;Schene AH;Veltman DJ;Fellinger L;van Wingen GA;Denys D

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大约三分之一的重度抑郁症(MDD)患者在各种治疗方案后没有达到缓解,并发展为难治性抑郁症(TRD)。到目前为止,对TRD的病理生理学知之甚少。在MDD患者中的研究表明,三个“核心”神经认知网络的功能连接(FC)异常:显着性网络(SN),认知控制网络(CCN)和默认模式网络(DMN)。我们采用横断面设计并进行静息状态FC MRI,以评估17例重度TRD、18例非TRD和18例健康对照(HC)受试者的SN、CCN和前后DMN的连通性。相对于非TRD和HC受试者,TRD患者显示背外侧前额叶皮层和角回之间的FC减少,这表明CCN和DMN之间的FC减少,内侧前额叶皮层和楔前叶/楔叶之间的FC减少,这表明前部和后部DMN之间的FC减少。未观察到SN FC的显著差异。我们的研究结果表明,TRD的特点是在神经认知网络相对于非TRD和HC的干扰。
Approximately one-third of patients with major depressive disorder (MDD) do not achieve remission after various treatment options and develop treatment resistant depression (TRD). So far, little is known about the pathophysiology of TRD. Studies in MDD patients showed aberrant functional connectivity (FC) of three “core” neurocognitive networks: the salience network (SN), cognitive control network (CCN), and default mode network (DMN). We used a cross-sectional design and performed resting-state FC MRI to assess connectivity of the SN, CCN, and both anterior and posterior DMN in 17 severe TRD, 18 non-TRD, and 18 healthy control (HC) subjects. Relative to both non-TRD and HC subjects, TRD patients showed decreased FC between the dorsolateral prefrontal cortex and angular gyrus, which suggests reduced FC between the CCN and DMN, and reduced FC between the medial prefrontal cortex and precuneus/cuneus, which suggests reduced FC between the anterior and posterior DMN. No significant differences in SN FC were observed. Our results suggest that TRD is characterized by a disturbance in neurocognitive networks relative to non-TRD and HC.
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