A synbiotic combination of Bifidobacterium longum Bif10 and Bifidobacterium breve Bif11, isomaltooligosaccharides and finger millet arabinoxylan prevents dextran sodium sulphate induced ulcerative colitis in mice

Decreased bifidobacterial abundance, disrupted gut barrier function, dysregulated immune response and ul-ceration have been reported in the gut microbiota of IBD patients. Non-digestible carbohydrates with bifidogenic effect enrich the gut microbiota with Bifidobacterium spp. and could help in overcoming inflammatory gut con-ditions. In this study, the protective effect of Bifidobacterium longum Bif10 and Bifidobacterium breve Bif11; iso-maltooligosaccharides (IMOS); Finger millet arabinoxylan (FM-AX) and their Synbiotic mix were evaluated against dextran sodium sulphate (DSS) induced UC in male Balb/c mice for 25 days. All the interventions ameliorated symptoms of colitis such as disease activity index (DAI), histological damage to the colon, gut -bacterial dysbiosis and inflammation. However, the synbiotic mix was more potent in amelioration of some of the parameters such as decreased TNF-alpha and lipocalin levels; increased anti-inflammatory markers (IL-10 and IL -22), and improved short chain fatty acids (SCFAs) levels in the cecum content. Furthermore, mouse colitis histological scoring (MCHI) also suggested the preventive role of synbiotic mix. All the dietary interventions aid in improving the DAI and immune parameters; restoration or regeneration of the altered selected gut bacteria, enhances the SCFA production, strengthens gut barrier, prevents gut inflammation and decreases the colonic MCHI score in DSS fed mice.

Automated summary

This study evaluated the protective effect of Bifidobacterium longum Bif10 and Bifidobacterium breve Bif11, isomaltooligosaccharides (IMOS), finger millet arabinoxylan (FM-AX) and their synbiotic mix against DSS-induced UC in mice. All interventions improved colitis symptoms, gut bacteria dysbiosis, and inflammation. However, the synbiotic mix was more effective in improving certain parameters.