PMID- 34925089 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20211221 IS - 1664-0640 (Print) IS - 1664-0640 (Electronic) IS - 1664-0640 (Linking) VI - 12 DP - 2021 TI - Shared and Distinct Fractional Amplitude of Low-Frequency Fluctuation Patterns in Major Depressive Disorders With and Without Gastrointestinal Symptoms. PG - 744898 LID - 10.3389/fpsyt.2021.744898 [doi] LID - 744898 AB - Objective: Gastrointestinal (GI) symptoms are fairly common somatic symptoms in depressed patients. The purpose of this study was to explore the influence of concomitant GI symptoms on the fractional amplitude of low-frequency fluctuation (fALFF) patterns in patients with major depressive disorder (MDD) and investigate the connection between aberrant fALFF and clinical characteristics. Methods: This study included 35 MDD patients with GI symptoms (GI-MDD patients), 17 MDD patients without GI symptoms (nGI-MDD patients), and 28 healthy controls (HCs). The fALFF method was used to analyze the resting-state functional magnetic resonance imaging data. Correlation analysis and pattern classification were employed to investigate the relationship of the fALFF patterns with the clinical characteristics of patients. Results: GI-MDD patients exhibited higher scores in the HRSD-17 and suffered more severe insomnia, anxiety/somatization, and weight loss than nGI-MDD patients. GI-MDD patients showed higher fALFF in the right superior frontal gyrus (SFG)/middle frontal gyrus (MFG) and lower fALFF in the left superior medial prefrontal cortex (MPFC) compared with nGI-MDD patients. A combination of the fALFF values of these two clusters could be applied to discriminate GI-MDD patients from nGI-MDD patients, with accuracy, sensitivity, and specificity of 86.54, 94.29, and 70.59%, respectively. Conclusion: GI-MDD patients showed more severe depressive symptoms. Increased fALFF in the right SFG/MFG and decreased fALFF in the left superior MPFC might be distinctive neurobiological features of MDD patients with GI symptoms. CI - Copyright (c) 2021 Fu, Li, Yan, Chen, Liu, Zhao and Guo. FAU - Fu, Xiaoya AU - Fu X AD - National Clinical Research Center for Mental Disorders, Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, China. FAU - Li, Huabing AU - Li H AD - Department of Radiology, The Second Xiangya Hospital of Central South University, Changsha, China. FAU - Yan, Meiqi AU - Yan M AD - National Clinical Research Center for Mental Disorders, Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, China. FAU - Chen, Jindong AU - Chen J AD - National Clinical Research Center for Mental Disorders, Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, China. FAU - Liu, Feng AU - Liu F AD - Department of Radiology, Tianjin Medical University General Hospital, Tianjin, China. FAU - Zhao, Jingping AU - Zhao J AD - National Clinical Research Center for Mental Disorders, Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, China. FAU - Guo, Wenbin AU - Guo W AD - National Clinical Research Center for Mental Disorders, Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, China. AD - Department of Psychiatry, The Third People's Hospital of Foshan, Foshan, China. LA - eng PT - Journal Article DEP - 20211202 PL - Switzerland TA - Front Psychiatry JT - Frontiers in psychiatry JID - 101545006 PMC - PMC8674438 OTO - NOTNLM OT - fractional amplitude low-frequency fluctuation OT - functional magnet resonance imaging (fMRI) OT - gastrointestinal symptoms OT - major depressive disorder OT - somatic symptoms COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2021/12/21 06:00 MHDA- 2021/12/21 06:01 PMCR- 2021/12/02 CRDT- 2021/12/20 06:05 PHST- 2021/07/21 00:00 [received] PHST- 2021/10/29 00:00 [accepted] PHST- 2021/12/20 06:05 [entrez] PHST- 2021/12/21 06:00 [pubmed] PHST- 2021/12/21 06:01 [medline] PHST- 2021/12/02 00:00 [pmc-release] AID - 10.3389/fpsyt.2021.744898 [doi] PST - epublish SO - Front Psychiatry. 2021 Dec 2;12:744898. doi: 10.3389/fpsyt.2021.744898. eCollection 2021.