Fermented dairy products modulate Citrobacter rodentium-induced colonic hyperplasia.


Collins, JW; Chervaux, C; Raymond, B; Derrien, M; Brazeilles, R; Kosta, A; Chambaud, I; Crepin, VF; Frankel, G; (2014) Fermented dairy products modulate Citrobacter rodentium-induced colonic hyperplasia. The Journal of infectious diseases, 210 (7). pp. 1029-41. ISSN 0022-1899 DOI: https://doi.org/10.1093/infdis/jiu205

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Abstract

We evaluated the protective effects of fermented dairy products (FDPs) in an infection model, using the mouse pathogen Citrobacter rodentium (CR). Treatment of mice with FDP formulas A, B, and C or a control product did not affect CR colonization, organ specificity, or attaching and effacing lesion formation. Fermented dairy product A (FDP-A), but neither the supernatant from FDP-A nor β-irradiated (IR) FDP-A, caused a significant reduction in colonic crypt hyperplasia and CR-associated pathology. Profiling the gut microbiota revealed that IR-FDP-A promoted higher levels of phylotypes belonging to Alcaligenaceae and a decrease in Lachnospiraceae (Ruminococcus) during CR infection. Conversely, FDP-A prevented a decrease in Ruminococcus and increased Turicibacteraceae (Turicibacter). Importantly, loss of Ruminococcus and Turicibacter has been associated with susceptibility to dextran sodium sulfate-induced colitis. Our results demonstrate that viable bacteria in FDP-A reduced CR-induced colonic crypt hyperplasia and prevented the loss of key bacterial genera that may contribute to disease pathology.

Item Type: Article
Faculty and Department: Faculty of Infectious and Tropical Diseases > Dept of Pathogen Molecular Biology
PubMed ID: 24706936
URI: http://researchonline.lshtm.ac.uk/id/eprint/4646451

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