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The Impact of Lactobacillus plantarum on the Gut Microbiota of Mice with DSS-Induced Colitis

Fei Zhang,Yue Li,Xiliang Wang,Shengping Wang,D. Bi

Published 2019 in BioMed Research International

ABSTRACT

The pathogenesis of inflammatory bowel disease (IBD) is due in part to a loss of equilibrium among the gut microbiota, epithelial cells, and resident immune cells. The gut microbiota contains a large proportion of probiotic commensal Lactobacillus species; some natural microbiota and probiotics confer protection against IBD. In this study, mice with colitis triggered by dextran sodium sulphate (DSS) were given Lactobacillus plantarum orally. We assessed the damage caused by DSS and the therapeutic activity of L. plantarum. The colitis triggered by DSS was less severe in the mice that received the L. plantarum treatment, which also diversified the microbe species in the colon, enhanced the ratio of Firmicutes to Bacteroidetes, and diminished the relative abundance of Lactobacillus. The taxonomic units of greatest diversity in the DSS and L. plantarum groups were identified using a linear discriminant and effect size (LEfSe) analysis. Aliihoeflea was established to be the genus of bacteria that was affected in the L. plantarum group most extensively. In conclusion, gut health was promoted by L. plantarum, as it diversified the microbes in the colon and restricted the activity of pathogenic bacteria in the intestine. Moreover, according to the LEfSe analysis, the DSS group was impacted more significantly by gut microorganisms than the L. plantarum group, suggesting that L. plantarum improved the stability of the intestinal tract.

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