RESUMO
<p><b>OBJECTIVE</b>To study the mechanism of action and the therapeutic efficacy of treating patients with perennial allergic rhinitis by Qumin Tongbi Nasal Spraying Agent (QTNSA).</p><p><b>METHODS</b>One hundred and three patients with perennial allergic rhinitis were randomly assigned to two groups. Of them, 57 patients in the treatment group were treated with QTNSA and 46 patients in the control group were treated with Veconase. Seven days were taken as one therapeutic course, two courses in total. The therapeutic efficacy and the serum levels of interleukin-4 (IL-4), IL-8, immunoglobulin E (IgE) and nasal airway resistance (NAR), symptoms and signs integrals before and after treatment were observed in the two groups.</p><p><b>RESULTS</b>There was no statistical significance between the treatment group and the control group in the markedly effective rate (61.40% vs. 63. 04%) and the total effective rate (87.72% vs. 89.13%). After treatment symptoms and signs integrals of the two groups were significantly improved when compared with before treatment (P < 0.01). There was no significant difference between the two groups after treatment (P > 0.05). The serum levels of IL-4, IL-8, IgE, and NAR were significantly higher in the two groups than those of the normal group. They significantly decreased after treatment in the two groups, showing statistical difference (P < 0.01). There was no statistical difference between the treatment group and the control group (P > 0.05).</p><p><b>CONCLUSIONS</b>QTNSA could effectively treat perennial allergic rhinitis. It could obviously lower serum levels of IL-4, IL-8, IgE, and NAR in patients with perennial allergic rhinitis.</p>