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Abstract Title:

Dietary Quercetin Increases Colonic Microbial Diversity and Attenuates Colitis Severity in-Infected Mice.

Abstract Source:

Front Microbiol. 2019 ;10:1092. Epub 2019 May 16. PMID: 31156598

Abstract Author(s):

Rui Lin, Meiyu Piao, Yan Song

Article Affiliation:

Rui Lin

Abstract:

Disturbed balance between microbiota, epithelial cells, and resident immune cells within the intestine contributes to inflammatory bowel disease (IBD) pathogenesis. The-induced colitis mouse model has been well documented. This model allows the analysis of host responses to enteric bacteria and facilitates improved understanding of the potential mechanisms of IBD pathogenesis. The current study evaluated the effects of dietary 30 mg/kg quercetin supplementation on-induced experimental colitis in C57BL/6 mice. Following dietary quercetin supplementation, the mice were infected with 5 × 10 CFU, and the pathological effects ofwere measured. The results showed that quercetin alleviated the effects of-induced colitis, suppressed the production of pro-inflammatory cytokines, such as interleukin (IL)-17, tumor necrosis factor alpha, and IL-6 ( < 0.05), and promoted the production of IL-10 in the colon tissues ( < 0.05). Quercetin supplementation also enhanced the populations of,,andand significantly reduced those ofand( < 0.05). These findings indicate that dietary quercetin exerts therapeutic effects on-induced colitis, probably due to quercetin's ability to suppress pro-inflammatory cytokines and/or modify gut microbiota. Thus, these results suggest that quercetin supplementation is effective in controlling-induced inflammation.

Study Type : Animal Study

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Sayer Ji
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