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Dysconnectivity of the amygdala and dorsal anterior cingulate cortex in drug-naive post-traumatic stress disorder.

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机构： [1]Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, No. 37 Guo Xue Xiang, Chengdu 610041, China [2]Department of Biophysics, Medical College of Wisconsin, 8701 West Watertown Plank Road, Milwaukee, WI 53226, United States [3]Department of Imaging Physics, Univ of Texas M D Anderson Cancer Center, Houston, TX 77054, United States [4]Mental Health Institute, the Second Xiangya Hospital of Central South University, Changsha, China [5]Department of Biomedical Engineering, New Jersey Institute of Technology, Newark 07101, NJ, United States [6]The Clinical Hospital of Chengdu Brain Science Institute, MOE Key Lab for Neuroinformation, University of Electronic Science and Technology of China, Chengdu, China [7]Psychoradiology Research Unit of Chinese Academy of Medical Sciences, Chengdu, China [8]Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital of Sichuan University, Chengdu, China

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关键词： Post-traumatic stress disorder (PTSD) Resting-state functional magnetic resonance image (rs-fMRI)

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Convergent studies have highlighted the amygdala-based and dorsal anterior cingulate cortex (dACC)-based circuit or network dysfunction in post-traumatic stress disorder (PTSD). However, previous studies are often complicated by various traumatic types, psychiatric comorbidities, chronic illness duration, and medication effect on brain function. Besides, little is known whether the functional integration with amygdala-dACC interaction disrupted or not in PTSD. Here, we investigated effective connectivity (EC) between the amygdala-dACC and rest of the cortex by applying psycho-physiological interaction (PPI) approach to resting-state functional magnetic resonance imaging data of 63 drug-naive PTSD patients and 74 matched trauma-exposed non-PTSD controls. Pearson correlation analysis was performed between EC values extracted from regions with between-group difference and clinical profiles in PTSD patients. We observed distinct amygdala-dACC interaction pattern between PTSD group and the control group, which is composed primarily by positive EC in the former and negative in the latter. In addition, compared with non-PTSD controls, PTSD patients showed increased EC between amygdala-dACC and the prefrontal cortex, left inferior parietal lobule, and bilateral ventral occipital cortex, and decreased EC between amygdala-dACC and the left fusiform gyrus. The EC increase between amygdala-dACC and the right middle frontal gyrus was negatively correlated with the clinician-administered PTSD scale scores in PTSD patients. Aberrent communication between amgydala-dACC and brain regions involved in central executive network and visual systems might be associated with the pathophysiology of PTSD. Further, these findings suggested that dysconnectivity of the amygdala and dACC could be adapted as a relatively early course diagnostic biomarker of PTSD.Copyright © 2021 The Authors. Published by Elsevier B.V. All rights reserved.

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出版当年[2021]版：

大类 | 3 区医学

小类 | 2 区药学 3 区临床神经病学 3 区神经科学 3 区精神病学

最新[2023]版：

大类 | 2 区医学

小类 | 2 区临床神经病学 2 区神经科学 2 区药学 2 区精神病学

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第一作者机构： [1]Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, No. 37 Guo Xue Xiang, Chengdu 610041, China

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通讯机构： [1]Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, No. 37 Guo Xue Xiang, Chengdu 610041, China [7]Psychoradiology Research Unit of Chinese Academy of Medical Sciences, Chengdu, China [8]Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital of Sichuan University, Chengdu, China

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Dysconnectivity of the amygdala and dorsal anterior cingulate cortex in drug-naive post-traumatic stress disorder.

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