Purpose: To study the therapeutic effects of imperatorin (IPT) on allergic asthma induced by ovalbumin in rats.
Methods: Asthma was established in rats by injection of ovalbumin (OVA), and IPT (20, 40 and 80 mg/kg) IPT (20, 40 and 80 mg/kg)
decreased inflammatory cells including eosinophils (p < 0.01), neutrophils (p < 0.05), lymphocytes (p < 0.01) and macrophages (p < 0.01). In addition, the four inflammatory cytokines {interleukin (IL) -4, IL-6, IL-13 and tumor necrosis factor (TNF)-α} were significantly decreased by treatment with IPT (20, 40 and 80 mg/kg) dose-dependently (p < 0.01).Furthermore, MUC5AC in lung tissues was significantly down-regulated by treatment with IPT (20, 40 and 80 mg/kg, p < 0.01)