Fig. 2From: Nasal irrigation with licorice extract (Glycyrrhiza glabra) in treating nasal polyps by reducing fibroblast differentiation and extracellular matrix production in TGF-β1-stimulated nasal polyp-derived fibroblasts by inhibiting the MAPK/ERK-1/2 pathway – an in vitro and in clinic studyResearch process. Patients with nasal polyps received biopsies before and two weeks after using nasal irrigation with licorice extract, and the fibroblasts in the polyps were isolated for culture (n = 3). The pathological differences of nasal polyps before and after treatment were evaluated by immunohistochemistry staining, and the molecular mechanism of the licorice extract on fibroblasts was investigated by in vitro experimentsBack to article page