Brain Resting-State Network Alterations Associated With Crohn's Disease.

Area of Science:

• Neuroscience
• Gastroenterology
• Medical Imaging

Background:

• Inflammatory bowel disease (IBD) is a chronic condition with known links to brain function.
• Previous research suggests IBD may influence brain structure and activity.

Purpose of the Study:

• To investigate differences in brain structure and functional connectivity (FC) in individuals with Crohn's disease (CD) compared to healthy controls (HC).
• To identify specific brain networks and regions affected by CD.

Main Methods:

• Utilized magnetic resonance imaging (MRI) for a preliminary study.
• Employed voxel-based morphometry (VBM) for structural analysis.
• Conducted region of interest (ROI) and independent component analysis (ICA) to assess FC in resting-state networks.

Main Results:

• No significant differences in brain structure were found between CD patients and HC.
• Increased FC was observed between the frontoparietal (FP) and salience networks (SN) in CD patients.
• Decreased FC was noted within the default mode network (DMN) in CD patients.
• ICA revealed FC alterations involving cerebellar (CER), visual (VIS), and SN components.
• Sex-related differences in FC were identified in both ROI and ICA analyses.

Conclusions:

• The observed changes in functional connectivity suggest a significant influence of Crohn's disease on brain activity.
• Findings support the hypothesis of a gut-brain axis connection in IBD.
• Results provide a basis for future research into the neurological aspects of CD.