卡介菌多糖核酸对尖锐湿疣患者血清IL-4和IL-12水平的影响

目的：研究卡介菌多糖核酸对尖锐湿疣患者血清IL-12和IL-4水平的影响，探讨卡介菌多糖核酸对尖锐湿疣Th1/Th2的免疫调节作用的机制。方法：将60例尖锐湿疣患者随机分为治疗组和对照组。采用双抗体夹心ELISA法分别检测治疗前后患者血清IL-12和IL-4水平，并与健康对照者比较。同时比较治疗组与对照组的临床复发率。结果：尖锐湿疣患者血清IL-12水平降低，IL-4水平增高，二者呈负相关（r＝-0.287，P<0.05），与健康对照者比较均有显著性差异（P<0.05）；治疗组治疗后IL-12水平增高，而IL-4水平降低，与治疗前水平比较均有显著差异（P<0.05），对照组治疗前后IL-12水平和IL-4水平无显著差异（P>0.05）；治疗组复发率低于对照组，有显著差异（χ2＝4.356，P<0.05）。结论：尖锐湿疣患者存在Th1/Th2细胞因子失衡；卡介菌多糖核酸能提高患者血清IL-12水平，降低IL-4水平；其降低尖锐湿疣临床复发率的机制可能是通过调节和改善尖锐湿疣的Th1/Th2细胞因子免疫失衡，从而增强机体的细胞免疫功能。

Effects of BCG-PSN on serum levels of IL-4 and IL-12 in patients with condyloma acuminatum

OBJECTIVE: To determine the effects of polysaccharide nucleic acid fraction of bacillus calmette guerin (BCG-PSN) on serum levels of interleukin-4 (IL-4) and interleukin-12 (IL-12) in patients with condyloma acuminatum (CA) and to investigate the mechamism of immunoregulation of BCG-PSN on CA. METHODS: Sixty CA cases were randomly divided into 2 groups. The serum levels of IL-4 and IL-12 were respectively measured by Double-antibody sandwich ELISA method before and after the treatment. The serum levels of IL-12 and IL-4 of health control were also measured. The recurrent rate of each group was used as an index to assess the effect of BCG-PSN in CA patients. RESULTS: Compared with healthy controls, the serum levels of IL-12 in patients with CA were decreased significantly (P < 0.05), while the serum levels of IL-4 were increased significantly (P < 0.05) before the treatment. The serum levels of IL-12 were negatively correlated with the serum levels of IL-4 (r = -0.287, P < 0.05). After the treatment, the serum levels of IL-12 were increased significantly( P < 0.05), and the serum levels of IL4 were decreased significantly (P < 0.05) in the treatment group. But in the control group, the serum levels of IL-12 and IL-4 were similar before and after the treatment (P > 0.05). The recurrent rate of treatment group was significantly lower than that of the control group (chi2 = 4.356, P < 0.05). CONCLUSIONS: There is an imbalance of Th1/Th2 cytokines production in patients with condyloma acuminatum. BCG-PSN could increase the serum level of IL-12 and decrease the serum level of IL-4 in CA patients. BCG-PSN could decrease the recurrent rate of CA. The effect may be related to the regulation and modulation of BCG-PSN to Thl/Th2 cytokines imbalance,which then enhances the cellular immunity in CA patients.