白芷提取物及其活性成分欧前胡素改善痛风性关节炎

Effect of Angelica dahurica extract and imperatorin on gouty arthritis

目的探讨白芷提取物及欧前胡素对尿酸钠(monosodium urate,MSU)晶体诱导的痛风性关节炎的作用。方法采用大鼠左踝关节注射MSU建立痛风性关节炎模型,测量大鼠0-24 h踝关节肿胀程度;观察滑膜组织病理学变化;检测滑膜组织中NOD样受体蛋白3(NLRP3)、白细胞介素-1β(IL-1β)、半胱氨酸天冬氨酸蛋白酶1(caspase-1)、白细胞介素-1R1(IL-1R1)、白细胞介素-6(IL-6)和肿瘤坏死因子-α(TNF-α)的蛋白或mRNA的表达情况。结果白芷提取物和欧前胡素明显减轻MSU诱导大鼠左踝关节肿胀,改善滑膜组织中炎性浸润,明显降低滑膜组织中NLRP3、IL-1β、caspase-1、IL-1R1、IL-6、TNF-α的蛋白及mRNA表达。结论白芷提取物及其活性成分欧前胡素均有较好的改善痛风性关节炎作用,为其临床应用提供基础数据支撑。

Aim To investigate the effects of Angelica dahurica extract and imperatorin on gouty arthritis induced by monosodium urate(MSU)crystal.Methods The model of gouty arthritis was established by injecting MSU crystals into the left ankle of rats.The degree of ankle swelling was measured at 0-24 h in rats.The histopathological changes of synovial tissues were observed.Meanwhile the mRNA and protein expression levels of Nod-like receptor protein 3(NLRP3),interleukin-1β(IL-1β),cysteinyl aspartate specific proteinase-1(caspase-1),interleukin-1 receptor type 1(IL-1 R1),interleukin-6(IL-6),tumor necrosis factor-α(TNF-α)were detected by Western blot and RT-PCR in synovial tissues.Results Angelica dahurica extract and imperatorin significantly reduced MSU induced left ankle swelling in rats,and improved inflammatory infiltration in synovial tissues.The expression of NLRP3,IL-1β,caspase-1,IL-1 R1,IL-6,TNF-αprotein or mRNA in synovial tissues decreased significantly.Conclusion Angelica dahurica extract and its active component imperatorin could ameliorate gouty arthritis,which supplys basic data support for its clinical application.