木瓜苷对佐剂性关节炎大鼠血清抗体水平的下调作用

目的探讨木瓜苷(glucosides of cheanomeles speciosa,GCS)对AA大鼠血清抗体水平的影响。方法SD大鼠随机分为6组:正常对照组、模型组(AA组)、GCS3个剂量组和雷公藤多苷组(GTW)。大鼠足跖皮内注射弗氏完全佐剂(FCA)诱发大鼠AA模型,聚乙二醇(PEG)6000法检测血清循环免疫复合物(circulating immune complexes,CIC);酶联免疫吸附(ELISA)法检测血清中抗Ⅱ型胶原抗体(anti-CⅡan-tibody)水平、抗结核杆菌抗体(anti-TB antibody)水平。结果大鼠免疫后d17开始分别灌胃GCS(30、60、120mg·kg-1)和GTW(40mg·kg-1)对照药,连续给药8d。GCS(60、120mg·kg-1)体内给药可明显降低AA大鼠血清中升高的CIC水平、抗CⅡ抗体水平和抗结核菌素抗体水平。结论GCS具有明显的下调AA大鼠血清抗体水平的作用,可能是其发挥治疗AA作用的重要机制之一。

Down-regulation effect of glucosides of cheanomeles speciosa on the levels of serum antibodies in rats with adjuvant arthritis

Aim To study the effects of glucosides of cheanomeles speciosa(GCS)on the levels of serum antibodies in rats with adjuvant arthritis.Methods SD rats were divided randomly into six groups, including normal, model, GCS(30,60,120 mg·kg-1)and glucosides of tripterygium wifordii(GTW) groups. Complete Freund′s adjuvant was used to induce AA in rats. The level of circulating immune complexes in serum was determined by PEG 6 000 assay, while the levels of anti-CⅡ antibody, and anti-TB antibody in serum were measured by enzyme-linked immunosorbent assay(ELISA).Results GCS(30,60,120 mg·kg-1)and GTW(40 mg·kg-1)were given by intragastric administration for 8 days from the 17 th day after immunization. GCS(60,120 mg·kg-1)reduced the levels of circulating immune complexes, anti-CⅡantibody, and anti-TB antibody in serum in rats with adjuvant arthritis.Conclusions GCS down regulates the levels of serum antibodies in rats with adjuvant arthritis, which may be related to its efficacy in the treatment of rats with AA.