The differential alleviation of DSS-induced colitis in mice by black tea extracts of different origins via enhancing the gut barrier and gut microbiota modulation

modulating the gene expressions of the glutamatergic synapse and IL-17 pathway, respectively. Further qPCR and immunohistochemistry assays verified the aforementioned pathway modulation. Together, our study provides a roadmap for understanding the effects of different black tea types on colitis and for providing potential directions for the nutritional modulation of colitis.