Brain structural alterations in MDD patients with gastrointestinal symptoms: Evidence from the REST-meta-MDD project.
Abstract
While gastrointestinal (GI) symptoms are very common in patients with major depressive disorder (MDD), few studies have investigated the neural basis behind these symptoms. In this study, we sought to elucidate the neural basis of GI symptoms in MDD patients by analyzing the changes in regional gray matter volume (GMV) and gray matter density (GMD) in brain structure. Subjects were recruited from 13 clinical centers and categorized into three groups, each of which is based on the presence or absence of GI symptoms: the GI symptoms group (MDD patients with at least one GI symptom), the non-GI symptoms group (MDD patients without any GI symptoms), and the healthy control group (HCs). Structural magnetic resonance images (MRI) were collected of 335 patients in the GI symptoms group, 149 patients in the non-GI symptoms group, and 446 patients in the healthy control group. The 17-item Hamilton Depression Rating Scale (HAMD-17) was administered to all patients. Correlation analysis and logistic regression analysis were used to determine if there was a correlation between the altered brain regions and the clinical symptoms. There were significantly higher HAMD-17 scores in the GI symptoms group than that of the non-GI symptoms group (...Continue Reading
References
Abnormal resting brain activity in patients with functional dyspepsia is related to symptom severity
Alterations of the default mode network in functional dyspepsia patients: a resting-state fmri study
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