Effect of Wenjing Huayu Zhitong Therapy in Treating Primary Dysmenorrhea and Its Regulatory Mechanisms on T Cell Subsets / 中国实验方剂学杂志

ABSTRACT

Objective:To observe the clinical efficacy of Wenjing Huayu Zhitong therapy in treating primary dysmenorrhea (PD) with cold coagulation and blood stasis, and to explore its immune mechanisms on PD. Method:The 108 PD patients with cold coagulation and blood stasis syndrome were collected and randomly divided into traditional Chinese medicine (TCM) group, ibuprofen group and placebo group according to the random number table method, with 36 cases in each group. All patients received corresponding medicines three days before menstruation. The patients in TCM group were treated with TCM and ibuprofen sustained release capsule simulator. The patients in ibuprofen group were treated with ibuprofen sustained-release capsule and TCM simulator. The patients in placebo group were treated with TCM simulator and ibuprofen sustained-release capsule simulator. Treatment lasted for 6 consecutive days for three menstrual cycles, and follow-up was conducted for three menstrual cycles after drug withdrawal. The visual analogue score (VAS), total time of abdominal pain and TCM symptom scores in each menstrual cycle were recorded. The levels of CD3+, CD4+, CD8+ and the ratio of CD4+/CD8+ in peripheral blood before and after treatment were detected by flow cytometry. Result:After treatment for three menstrual cycles, both the TCM group and ibuprofen group were better than placebo group in reducing VAS score and reducing total abdominal pain time (P<0.01). The long-term follow-up effect after drug withdrawal in TCM group was significantly better than that in ibuprofen group (P<0.01). The total effective rate was 91.43% (32/35) in TCM group, 66.67% (10/33) in ibuprofen groups, and 30.30% (10/33) in placebo group . The efficacy of the TCM group was better than that of the ibuprofen group (χ2=-2.971, P<0.01), and the efficacy of the ibuprofen group was better than that of the placebo group (χ2=-2.371, P<0.05). After treatment, the levels of CD3+, CD4+ and CD4+/CD8+ in TCM group were significantly increased and the levels of CD8+ were decreased significantly as compared with those before treatment (P<0.01). After treatment, the levels of CD4+ and CD4+/CD8+ in TCM group were higher (P<0.05，P<0.01)，while the levels of CD8+ were significantly lower than those in ibuprofen group and placebo group (P<0.01). Conclusion:Wenjing Huayu Zhitong therapy can reduce the VAS score and accumulative time of abdominal pain, and improve the dysmenorrhea symptoms in patients with PD. Reversal of the T cell subsets disorder may be one of its mechanisms in treating PD with cold coagulation and blood stasis.