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Dietary tangeretin alleviated dextran sulfate sodium-induced colitis.

PMID: 

J Agric Food Chem. 2021 Jun 28. Epub 2021 Jun 28. PMID: 34182753

Abstract Title: 

Dietary Tangeretin Alleviated Dextran Sulfate Sodium-Induced Colitis in Mice via Inhibiting Inflammatory Response, Restoring Intestinal Barrier Function, and Modulating Gut Microbiota.

Abstract: 

In this study, the preventive effect of tangeretin (TAN), a natural flavonoid derivative from citrus fruits, on the dextran sulfate sodium (DSS)-induced colitis in mice was evaluated. Our results showed that dietary TAN (0.04% and 0.08% w/w in the diet) significantly reduced the severity of colitis caused by DSS treatment in mice, evidenced by the increased colon length, the reduced disease activity index, and the attenuated colonic tissue damages. Moreover, dietary TAN inhibited the inflammatory response via down-regulating the overexpression of colonic inflammatory cytokines. Immunohistochemical analysis revealed that the intestinal barrier function was restored by TAN through enhancing claudin-1 and ZO-1 expressions. Additionally, dietary TAN modulated gut microbiota in colitic mice via enhancing gut microbiota diversity, ascending the level of beneficial bacteria, e.g.,and, and descending the level of harmful bacteria, e.g.,and. Besides, dietary TAN promoted short-chain fatty acids production in DSS-treated mice. Altogether, these findings provided scientific evidence for the rational utilization of TAN as a preventive agent against colonic inflammation and related diseases.

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