“…Therefore, we used immunohistochemical staining and flow cytometry to observe the changes in Th17 cells in each group to explore whether QU interferes with Th17 cells. The results showed that, compared with that in the control group, the number of Th17 cells in the periodontitis group increased but decreased significantly after intragastric administration of QU, which is consistent with previous reports that QU inhibits Th17 cell differentiation and reduces inflammation to improve disease progression [ [34] , [35] , [36] ]. In mice with allergic rhinitis, QU was found to improve rhinitis symptoms by reducing the percentage of Th17 cells and inhibiting the expression of inflammation-related factors [ 37 ].…”