Effect of Tripterygium wilfordii on Th1, Th2 cytokines production in asthma patients

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Abstract

OBJECTIVE: To observe the effect of Tripterygium wilfordii on Th1, Th2 cytokines in asthma patients for further study on the therapeutic mechanism. METHODS: Twelve patients of middle or severe asthma were treated by Tripterygium polyglucoside 40 mg or 60 mg daily for 4 weeks. Blood of patients was colleted before and after treatment for serum and peripherol blood mononuclear cells (PBMC) preparation. The prepared PBMCs were stimulted in vitro with Concanavalin A (ConA) for 6 hrs and followed by culturing with Triptolide for 24 hrs and then the supernatant was collected. The concentration of interleukin-2(IL-2), -4(IL-4), -5(IL-5) and interferon-gamma(IFN-gamma) in serum and in the supernatant were detected by enzyme-linked immunosorbent assay (ELISA). RESULTS: Serum levels of IL-2, IL-4 and IL-5 of patients decreased significantly after treatment of Tripterygium polyglucoside (P < 0.01), but IFN-gamma level was under the detection sensitivity both before and after treatment. Triptolide could inhibit PBMC to secrete IL-2, IL-4 and IL-5 in vitro (P < 0.01), but IFN-gamma was also under the detection sensitivity. CONCLUSION: The marked inhibition of Th2 cytokine expression by Tripterygium was the important mechanism of it in treating asthma. But the fact that Tripterygium also showed inhibition on Th1 cytokine indicated that the inhibition of Tripterygium on Th2 and Th1 cytokines was non-specific.

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Lin, K. X., Wang, C. Z., & Qian, G. S. (2001). Effect of Tripterygium wilfordii on Th1, Th2 cytokines production in asthma patients. Zhongguo Zhong Xi Yi Jie He Za Zhi Zhongguo Zhongxiyi Jiehe Zazhi = Chinese Journal of Integrated Traditional and Western Medicine / Zhongguo Zhong Xi Yi Jie He Xue Hui, Zhongguo Zhong Yi Yan Jiu Yuan Zhu Ban, 21(1), 22–24. https://doi.org/10.1007/bf02935109

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