中药单体丹皮酚治疗胶原诱导性关节炎的机制初探

目的 观察中药丹皮酚对胶原诱导性关节炎(CIA)的治疗作用,并初步探讨其作用机制.方法 以胶原诱导法构建关节炎小鼠模型,将成功造模的小鼠随机分为磷酸盐缓冲液(PBS)阴性对照组、甲氨蝶呤(MTX)阳性对照组和丹皮酚组,分别给予相应处理,观察丹皮酚对CIA的临床评分、血清细胞因子、Th17及自身抗体滴度的影响.结果 丹皮酚能明显降低关节炎分值(2.36±044,P<0.01),抑制Th1型炎性细胞因子白细胞介素(IL)-12(463±56,P<0.05)、肿瘤坏死因子(TNF)-α(248±66,P<0.01)、干扰素(IFN)-γ(325±40,P<0.05)、IL-6(282±43,P<0.01)等的产生,促进Th2型细胞因子IL-4(1411±683,P<0.01)和IL-10(325±35,P<0.05)分泌,下调脾脏细胞中Th17丰度(1.73%,P<0.05),降低血清抗Ⅱ型胶原自身抗体含量(A值=0.064,P<0.01).结论 丹皮酚对CIA具有良好的治疗效果,为研发治疗人类类风湿关节炎药物提供一条新思路.

Investigation of therapeutic effects of paeonol on collagen induced arthritis and its mechanisms

Objective To observe the effects of paeonol on collagen induced arthritis (CIA) and investigate its mechanisms. Methods The tentative arthritis mice model was created by injecting type Ⅱ collagen. The severity degree of RA was scored according to the rating criteria after treatment with paeonol. ELISA method was employed to detect the levels of IL-12, TNF-2, IFN-γ and anti-type Ⅱ collagen autoantibody. The efficacy of paeonol was compared with that of MTX (the positive control) and PBS was used as the negative control. Results We found that paeonol could alleviate severe RA, inhibit the expression of inflammatory cytokines such as IL-12, TNF-2, IFN-γ and reduce the level of anti-type Ⅱ collagen autoantibody in serum, which was similar with MTX. Conclusion The results show that paeonol has a reliable therapeutic effect for RA. This study has provided a good clue for the future research and development of medications for the treatment of RA.