Abnormal functional connectivity based on nodes of the default mode network in first-episode drug-naive early-onset schizophrenia.

Yue Peng, Sen Zhang, Youqi Zhou, Yichen Song, Ge Yang, Keke Hao, Yongfeng Yang, Wenqiang Li, Luxian Lv, Yan Zhang

Psychiatry research 2021 Jan

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Schizophrenia is considered a connectivity disorder. Further, the functional connectivity (FC) of the default-mode network (DMN) has gained the interest of researchers. However, few studies have been conducted on the abnormal connectivity of DMN in early-onset schizophrenia (EOS). In this study, the key brain regions of the DMN were used as seed regions to analyze the FC of the whole brain in EOS. When the seed was located in the medial prefrontal cortex (mPFC), patients with EOS exhibited decreased FC between mPFC and other brain regions compared with healthy controls (voxel P value < 0.001, cluster P value < 0.05, Gaussian random field corrected). When the seed was located in the posterior cingulate cortex (PCC), the FC between PCC and other brain regions was enhanced and weakened (voxel P value < 0.001, cluster P value < 0.05, Gaussian random field corrected), and PCC connectivity with the right parahippocampal gyrus was associated with Positive and Negative Syndrome Scale scores for the general score (r = -0.315, P = 0.02). The results showed that the FC within the DMN and that between DMN and visual networks were abnormal, suggesting that the DMN might be involved in the pathogenesis of EOS. Copyright © 2020 The Authors. Published by Elsevier B.V. All rights reserved.

Citation

Yue Peng, Sen Zhang, Youqi Zhou, Yichen Song, Ge Yang, Keke Hao, Yongfeng Yang, Wenqiang Li, Luxian Lv, Yan Zhang. Abnormal functional connectivity based on nodes of the default mode network in first-episode drug-naive early-onset schizophrenia. Psychiatry research. 2021 Jan;295:113578