目的 探讨IL-1β在痛风发病中的作用.方法 采用实时荧光定量聚合酶链反应(RT-qPCR)和酶链免疫吸附实验(ELISA)方法,检测120例痛风性关节炎急性期患者(急性期组)、70例慢性期患者(慢性期组)、80例间歇期患者(间歇期组)和96名健康体检者(正常对照组)的外周血单个核细胞(PBMCs) IL-1β mRNA水平和血浆IL-1β浓度;变量间差异采用方差分析或t检验(校正t检验),变量间相关关系采用Spearman相关分析.结果 各组患者的PBMCs IL-1β mRNA和血浆IL-1β浓度均显著高于正常对照组(均P<0.01);急性期组PBMCs IL-1β mRNA和血浆IL-1β浓度显著高于慢性期和间歇期组(均P<0.01),慢性期组显著高于间歇期组(均P<0.01).患者血浆IL-1β浓度与外周血白细胞计数、中性粒细胞和单核细胞绝对计数、血尿酸、球蛋白、ESR及PBMCs IL-1βmRNA水平均呈显著正相关(均P<0.01),而与载脂蛋白A1呈负相关(P<0.05).结论 血浆IL-1β显著升高在痛风急慢性关节炎炎症机制中发挥着重要作用.
Objective To explore the role of interleukin (IL)-1β in the pathogenesis of gout.Methods Real-time quantitative polymerase chain reaction (RT-qPCR) and enzyme-linked immunosorbent assay(ELISA) were used to measure the expression of IL-1β mRNA in peripheral blood mononuclear cells (PBMCs) and IL-1β in plasma samples from 120 acute gouty (AG) arthritis,70 chronic gouty (CG) arthritis,80 intercritical gouty (IG) arthritis patients and 96 healthy control subjects respectively.Results The expression of PBMCs IL-1β mRNA and plasma concentration of IL-1β were both much higher in gout patients than those in controls (P 〈 0.01,respectively).And the plasma levels of IL-1β mRNA and IL-1β significantly increased in the AG group compared with CG and IG groups (P 〈 0.01,respectively) and much higher in the CG group than those in the IG group.Positive correlations existed between plasma concentration of IL-1β and the levels of white blood cell,neutrophil,monocyte,erythrocyte sedimentation rate,blood uric acid,globulin and PBMCs IL-1β mRNA (P 〈 0.01,respectively) while negative correlation between plasma IL-1β and plasma level of apolipoprotein in gout patients (P 〈 0.05).Conclusion Elevated plasma level of IL-1β may be involved in the pathogenesis of acute and chronic gouty arthritis.