IL-6/IL-6R与恶性单克隆增殖病及良性多克隆增殖病的关系

目的:研究在恶性单克隆免疫球蛋白增殖病和良性多克隆免疫球蛋白增殖病患者血清中,IL-6/IL-6R对免疫球蛋白异常增生的调节作用。方法:收集恶性浆细胞瘤患者共37例,SLE患者33例,健康体检者33例,采用速率散射比浊法测定血清中免疫球蛋白成分及轻链水平,采用ELISA法检测血清中IL-6/IL-6R的水平,所有数据采用SPSS统计软件进行分析。结果:浆细胞瘤患者37例,免疫球蛋白呈恶性单克隆增殖,其中多发性骨髓瘤27例(IgG型19例、IgA型8例),巨球蛋白血症2例,轻链病8例,其血清中IL-6和IL-6R的水平较正常对照组均显著增高(P<0.05),组间无显著性差异;SLE患者33例,血清中免疫球蛋白呈良性多克隆增殖,其血清中IL-6水平较正常对照组显著增高(P<0.05);恶性单克隆增殖病患者血清中的IL-6和IL-6R水平又显著高于良性多克隆增殖病患者(P<0.05)。结论:IL-6刺激骨髓瘤细胞分泌异常免疫球蛋白及片段,参与了体液免疫调节,而在SLE患者组,Th1,Th2细胞功能偏移,以Th2细胞亢进为主,产生大量IL-6,它介导免疫调节反应,致B淋巴细胞活跃产生大量自身抗体及免疫球蛋白。IL-6/IL-6R水平的检测对于临床病情观察和预后判断有一定参考价值,如能设法阻断其作用途径,将为临床治疗提供前景。

Relationship between IL- 6/IL- 6R with Clonal Malignancy

Objective:To explore the relationship between IL-6/IL-6R in patients of clonal malignancy of plasma cells and SLE.Methods:Immunoglobulin and light chains were determined by nephelometery.IL-6 and IL-6R were determined in serum by ELISA.Results:As compared with control,level of IL-6 and IL-6R in serum was significantly higher(P<0.05).There was no significant difference between multiple myeloma and macroglobulinemia.It was significantly higher(P<0.05)in clonal malignancy of plasma cells than in SLE.Conclusion:IL-6 stimulates myeloma cells to secrete abnormal immunoglobulin.It plays a role in the pathogenesis of myeloma.In SLE,Th1/Th2 imbalance occur.Th2 cells secrete IL-6,which mediates immune adjustment reaction.Disruption of IL-6 pathway may be used to treat such diseases.