骨桥蛋白在系统性红斑狼疮中的临床意义

目的 研究血清骨桥蛋白(OPN)与系统性红斑狼疮(SLE)临床表现、实验指标、疾病活动的相关性,探讨血清OPN在SLE中的意义及SLE的发病机制.方法 用酶联免疫吸附(ELISA)法检测68例SLE患者和20名正常对照组血清中OPN的水平,并监测SLE患者的临床表现及实验室指标,分析其与OPN的相关性.结果 68例SLE患者中79%血清OPN阳性,20名正常对照组0PN均阴性,SLE组患者血清OPN阳性率及OPN水平显著高于正常对照组(P＜0.01).血清OPN阳性组的SLE患者与OPN阴性组的SLE患者相比,在年龄、性别及病程上差异均无统计学意义(P＞O.05 .血清OPN阳性组SLE患者发热、脱发、白细胞降低、肝脏损害、补体C4降低、免疫球蛋白IgA增高、蛋白尿及抗dsDNA抗体阳性的发生率明显高于OPN阴性组(P＜0.05). SLE患者血清OPN阳性率明显高于抗dsDNA抗体、抗sm抗体的阳性率,差异具有统计学意义(P＜0.01). SLE患者血清OPN水平与SLE疾病活动指数(SLEDAI)积分呈明显的正相关(r=0.292;P＜0.05);SLE活动期患者血清OPN阳性率及水平明显高于SLE缓解期患者,两组比较差异具有统计学意义(P＜O.05).结论 SLE患者血清中OPN水平升高,与SLE疾病活动性密切相关,可作为SLE的病情活动指标.

Clinical significance of osteopontin in systemic lupus erythematosus

Objective To explore the clinical significance of osteopontin (OPN) in systemic lupus erythematosus (SLE) and its pathogenic role in SLE by studying the correlation between OPN and clinical manifestations,laboratory parameters and disease activity.Methods The enzyme-linked immunosorbent assay(ELISA)was used to measure the level of OPN in serum of 68 SLE patients and 20 healthy controls.the clin-ical data and laboratory parameters were recorded.Results The positive rate of OPN was 79.41%in 68 SLEpatients and could not be detected in healthy controls.Compared with healthy controls.the positive rate and level of OPN in SLE patients was significantly higher(P＜0.01).There was no significant difference in age.gender and disease duration between OPN positive and negative lupus patients(P＞0.05).The Drevalence of fever,hair loss,WBC decrease,liver damage,serum C4 decrease,proteinuria and anti-dsDNA antibody in OPN positive SLE were significantly higher than those of OPN negative SLE(P＜0.05).The positive rate of serum OPN in SLE patients was significantly higher than that of anti-dsDNA antibody and anti-Sm antibody (P＜0.01).The level of plasma OPN was associated with systemic lupus erythematosus disease activity index (SLEDAI)(r=0.292,P＜0.05).The positive rate and level of OPN in active SLE patients was significantly higher than that of inactive SLE patients(P＜O.05).Conclusion The level of plasma OPN has a close rela-tionship with the activity of SLE.It may serve as an active disease marker of SLE.