Rosmarinic acid alleviated intestinal barrier damage caused by by regulating the gut microbiota and inhibiting the NF-κB signalling pathway in mice.

() is a common zoonotic foodborne pathogen that poses a major threat to public health and economic development. Rosmarinic acid (RA) can inhibit intestinal inflammation; however, the protective effect of RA against the intestinal barrier damage induced by in mice and the underlying mechanism have not been elucidated. In this study, mice were orally administered with RA (20 mg kg) by gavage for one week and then were intraperitoneally challenged with .