Nasal polyp tissue (n = 9) was stimulated with SEB for 1 hour before incubation with FF and MP at different concentrations for further 24 hours (post-challenge incubation).

We observed a significantly better maximal inhibition for all cytokines with FF compared to MF. Furthermore, a significant inhibition was reached for all cytokines with FF, whereas MF failed to significantly suppress IFN-γ, IL-2 and TNF-α. For IL-5 and IL-17, a significant inhibition was reached with FF at one order of magnitude lower molar concentrations compared to MF.N = no significant reduction reached at any concentration tested.