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在重度抑郁症中,海马体和杏仁核的异常固有连接在额极-脑岛和背内侧前额叶皮质中重叠。

Aberrant intrinsic connectivity of hippocampus and amygdala overlap in the fronto-insular and dorsomedial-prefrontal cortex in major depressive disorder.

机构信息

Department of Neuroradiology, Klinikum rechts der Isar, Technische Universität München , Munich , Germany ; Department of Nuclear Medicine, Klinikum rechts der Isar, Technische Universität München , Munich , Germany ; TUM-Neuroimaging Center (TUM-NIC), Klinikum rechts der Isar, Technische Universität München , Munich , Germany ; Sleep Disorders Research Center, Department of Psychiatry, Kermanshah University of Medical Sciences (KUMS) , Kermanshah , Iran.

出版信息

Front Hum Neurosci. 2013 Oct 1;7:639. doi: 10.3389/fnhum.2013.00639. eCollection 2013.


DOI:10.3389/fnhum.2013.00639
PMID:24101900
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3787329/
Abstract

Neuroimaging studies of major depressive disorder (MDD) have consistently observed functional and structural changes of the hippocampus (HP) and amygdale (AY). Thus, these brain regions appear to be critical elements of the pathophysiology of MDD. The HP and AY directly interact and show broad and overlapping intrinsic functional connectivity (iFC) to other brain regions. Therefore, we hypothesized the HP and AY would show a corresponding pattern of aberrant intrinsic connectivity in MDD. Resting-state functional MRI was acquired from 21 patients with MDD and 20 healthy controls. ß-Maps of region-of-interest-based FC for bilateral body of the HP and basolateral AY were used as surrogates for iFC of the HP and AY. Analysis of variance was used to compare ß-maps between MDD and healthy control groups, and included covariates for age and gender as well as gray matter volume of the HP and AY. The HP and AY of MDD patient's showed an overlapping pattern of reduced FC to the dorsomedial-prefrontal cortex and fronto-insular operculum. Both of these regions are known to regulate the interactions among intrinsic networks (i.e., default mode, central executive, and salience networks) that are disrupted in MDD. These results provide the first evidence of overlapping aberrant HP and AY intrinsic connectivity in MDD. Our findings suggest that aberrant HP and AY connectivity may interact with dysfunctional intrinsic network activity in MDD.

摘要

重度抑郁症(MDD)的神经影像学研究一致观察到海马体(HP)和杏仁核(AY)的功能和结构变化。因此,这些脑区似乎是 MDD 病理生理学的关键要素。HP 和 AY 直接相互作用,并与其他脑区显示广泛且重叠的内在功能连接(iFC)。因此,我们假设 MDD 中 HP 和 AY 会表现出相应的异常内在连接模式。从 21 名 MDD 患者和 20 名健康对照者中采集静息状态功能磁共振成像。双侧 HP 体部和 AY 基底外侧基于感兴趣区的 FC 的β图被用作 HP 和 AY 的 iFC 的替代物。方差分析用于比较 MDD 和健康对照组之间的β图,并包括年龄和性别以及 HP 和 AY 的灰质体积的协变量。MDD 患者的 HP 和 AY 与背内侧前额叶皮层和额岛盖之间的 FC 减少呈现重叠模式。这两个区域都已知调节内在网络(即默认模式、中央执行和突显网络)之间的相互作用,而 MDD 中存在这些网络的功能障碍。这些结果提供了 MDD 中重叠异常 HP 和 AY 内在连接的第一个证据。我们的发现表明,异常的 HP 和 AY 连接可能与 MDD 中内在网络活动的功能障碍相互作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7dbc/3787329/a39296817f5f/fnhum-07-00639-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7dbc/3787329/0a296776cbf0/fnhum-07-00639-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7dbc/3787329/2b45ad4560b1/fnhum-07-00639-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7dbc/3787329/a39296817f5f/fnhum-07-00639-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7dbc/3787329/0a296776cbf0/fnhum-07-00639-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7dbc/3787329/2b45ad4560b1/fnhum-07-00639-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7dbc/3787329/a39296817f5f/fnhum-07-00639-g003.jpg

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本文引用的文献

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Neuroimage. 2011-12-27

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