摘要目的 通过颈部彩色多普勒超声检测类风湿关节炎(RA)患者合并动脉粥样硬化情况,检测血清巨噬细胞移动抑制因子(MIF)及白细胞介素(IL)-17、IL-23水平,分析它们之间的相关性及在RA致动脉粥样硬化中的作用.方法 收集69例RA患者,根据颈部血管彩色多普勒超声结果,分为合并动脉粥样硬化组36例及无动脉粥样硬化组33例,并设64名健康者为健康对照组.采用酶联免疫吸附试 验(ELISA)法检测3组血清MIF、IL-17及IL-23水平.采用t检验、方差分析进行统计分析,相关性分析采用Pearson相关分析和Logistic回归分析.结果 合并动脉粥样硬化组MIF水平明显高于无动脉粥样硬化组及健康对照组(3组分别为15.2±1.7,13.8±2.2,8.0±2.9,P<0.05),且与颈动脉内膜中层厚度(IMT)值(r=0.271,P=0.036)、斑块大小(r=0.291,P=0.024)、IL-17(r=0.328,P=0.007)及IL-23(r=0.316,P=0.010)水平呈正相关;合并动脉粥样硬化组IL-17和IL-23水平高于健康对照组(2.8±2.0和2.0±0.8,449±174和341±113),但与无动脉粥样硬化组比较差异无统计学意义.Logistic回归分析显示RA患者MIF水平与动脉粥样硬化的发生呈正相关.结论 RA合并动脉粥样硬化患者血清MIF水平显著升高,且与IL-17、IL-23表达密切相关,血清MIF水平升高可作为RA患者发生动脉粥样硬化的预测指标.

abstractsobjective To detect the serum macrophage migration inhibitory factor(MIF)and interlbukin (IL)-17,IL-23 levels in rheumatoid arthritis patients with atherosclerosis and to analyze the association between them and their role in the pathogenesis of atherosclerosis in rheumatoid arthritis patients.Methods Total of 69 patients with RA were divided into atherosclerosis group(AS group)and those without atherosclerosis group(NAS group)according to neck vascular ultrasonography.Sixty-four healthy controls(the control group)were also enrolled into this study.MIF and IL-17,IL-23 levels were determined bv ELISA assay.The t test of two independent-samples and One-way ANOVA were used to compare the levels of MIF.IL-17 and IL-23 in different groups of patients and healthy individuals.The correlation between diffrent paramenters was assesed by Pearson's coefficient of correlation and Logistic regression.Results The serum MIF level in the AS group was significantly higher than that in the NAS group and healthy controls(15.2±1.7,13.8±2.2,8.0±2.9,P<0.05),and there were significant correlations between the serum MIF concentration,carotid intima-media thickness(IMT)(r=0.271,P=0.036).the size of atherosclerotic plaques(r=0.291,P=0.024),the serum level of IL-17(r=0.328,P=0.007)and IL-23(r=0.316,p=0.010).The serum IL-17 and IL-23 level in the AS group was higher than healthy controls(2.8±2.0 vs 2.0±0.8,449±174 vs 341±113),while there were no significant differences between AS group and NAS group.The serum MIF level in RA patients was positively correlated with atherosclerosis according to Logistic regression analysis.Conclusion The serum MIF level in RA patients with AS is significantly higher than that in NAS group and healthy controls,and it may be related with the serum level of IL-17 and IL-23.The elevated serum MIF level may be a predictor for atherosclerosis in patients with rheumatoid arthritis.