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J Ethnopharmacol. 2008 Jan 4;115(1):104-9. Epub 2007 Sep 19.

Antiinflammatory effects of Bu-zhong-yi-qi-tang in patients with perennial allergic rhinitis.

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  • 1School of Chinese Medicine, Chang Gung University, Taoyuan, Taiwan.


Bu-zhong-yi-qi-tang, an ancient formula of Chinese medicine usually used in the treatment of allergic diseases, was evaluated in the treatment of patients with perennial allergic rhinitis. In this study, 60 patients allergic to house dust mite allergen confirmed by skin test and MAST test were recruited and randomized. An experimental group of 36 patients was treated with Bu-zhong-yi-qi-tang, whereas a control group of 24 patients was treated with a non-effective formula Ping-wei-san for 3 months. The nasal symptomatic scores and the responses of polymorphonuclear neutrophils (PMN) to IL-4-stimulation were measured after treatment. The nasal symptomatic scores in the experimental group were significantly improved (3.78+/-0.09 before treatment vs. 0.57+/-0.06 after treatment). In contrast, no change was found in symptomatic scores in the control group (3.17+/-0.12 before treatment vs. 2.79+/-0.14 after treatment). Moreover, total serum IgE and the IL-4-stimulated production of PGE(2) and LTC(4) by PMN was significantly suppressed in the experimental group after treatment compared to the control group. The COX-2 mRNA expression in IL-4-stimulated PMN was also significantly suppressed after Bu-zhong-yi-qi-tang treatment. These results suggest that Bu-zhong-yi-qi-tang but not Ping-wei-san was beneficial to the patients with perennial allergic rhinitis via suppressed nasal inflammation by an antiinflammatory effect.

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