Results showed that G. muris can reduce the symptoms of C. rodentium-induced colitis, including weight loss, intestinal permeability, and histopathological damages, by enhancing, at least in part, the production of mucosal antimicrobial peptides (AMPs) such as Mouse β-defensin 3 and Trefoil factor 3 (TFF3; Manko et al., 2017). This evidence concerns the gene TFF3 and colitis.