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Abstract #0743

Multiomics analysis of the gut-microbiota-brain axis shows neural signatures of Crohn’s disease and its underlying mechanisms

Ruonan Zhang1, YANGDI WANG2, Xiaodi Shen2, Li Huang2, Mengzhu Wang3, Chen Zhao3, Ren Mao2, Shi-ting Feng2, and Xuehua Li2
1Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China, 2The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China, 3MR Research Collaboration, Siemens Healthineers Ltd., Beijing, China

Synopsis

Keywords: Digestive, Infectious disease

Motivation: Neural alterations affect intestinal conditions. However, these neural alterations and their potential formation mechanisms remain unclear.

Goal(s): We integrated brain radiomics, the fecal microbiome, and blood metabolomics to investigate neural characteristics in patients with Crohn’s disease (CD) by establishing putative links between the gut microbiota, blood metabolites, and brain alterations.

Approach: Multiomics data were compared between CD patients and healthy controls.

Results: We developed a novel multiparameter brain MRI-based radiomics model to characterize the neural features of CD patients. Causal mediation analysis revealed significant pathways supporting the pivotal role of the gut-brain axis in neural alterations in CD patients.

Impact: We developed a novel multiparameter MRI-based radiomics model to comprehensively characterize neural alterations in patients with Crohn’s disease. We presented biologically plausible evidence of the formation mechanism underlying these alterations from a gut-microbiota-brain axis perspective.

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