葡萄糖-6-磷酸异构酶抗原及相关自身抗体在类风湿关节炎诊断中的价值  

Application of glucose-6-phosphate isomerase and auto-antibodies in diagnosis of rheumatoid arthritis

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作  者:孙艳艳[1] 董红宇[2] 张亮[1] 吴雪梅[1] 张迎久[1] 李晔[1] 贺岩[1] 

机构地区:[1]北京市石景山医院检验科,100043 [2]北京市石景山医院风湿免疫科,100043

出  处:《中华全科医师杂志》2011年第9期664-666,共3页Chinese Journal of General Practitioners

摘  要:用ELISA检测90例类风湿关节炎(RA)患者(RA患者组)、73例其他风湿性疾病患者(非RA疾病对照组)、50例健康者(健康对照组)血清中葡萄糖-6-磷酸异构酶(GPI)抗原、抗环瓜氨酸肽(CCP)抗体,同时用速率散射比浊法定量检测类风湿因子IgM(RFIgM),用间接免疫荧光法检测抗角蛋白抗体(AKA)。结果显示,RA患者血清GPI水平[1.73(参考值0.43—4.40)mg/L]明显高于非RA疾病对照组[0.14(0.10~0.18)mg/L]和健康对照组[0.12(0.09~0.15)mg/L],差异有统计学意义(H=18.13,P〈0.01)。GPI抗原、CCP抗体、RF—IgM和AKA对RA的敏感度分别为80%(72/90)、57%(51/90)、68%(61/90)和29%(26/90);特异性分别为97%(119/123)、95%(117/123)、77%(95/123)和95%(117/123);GPI抗原分别和CCP抗体、RF—IgM联合检测的敏感度分别为92%(83/90)、96%(86/90),特异度分别为93%(115/123)、76%(93/123)。GPI与抗CCP和RF—IgM显著相关(r分别为0.674、0.533,P〈0.01),GPI与AKA无相关性(r=0.12,P〉0.05)。提示,GPI对RA诊断有较高的灵敏性和特异性,可以作为RA早期诊断的辅助指标。Blood samples were collected from 90 patients with confirmed rheumatoid arthritis (RA), 73 patients with other rheumatic diseases and 50 normal controls. Serum glucose-6-phosphate isomerase (GPI) and anti-cyclic citrullinated peptide (CCP) were detected with ELISA method, rheumatoid faetor IgM (RF IgM )was measured with turbidimetrie immunoassay and antikeratin antibody (AKA) was determined with indirect immunofluorescence assay. The serum GPI levels of RA group [ 1.73 (0. 43 - 4.40) mg/L1 were significantly higher than those of rheumatic disease [0. 14 (0. 10 -0. 18 )mg/L] and normal controls [0. 12(0. 09 -0. 15)mg/L] , ( H = 18. 13 ,P 〈 0. 01 ). The sensitivities of GPI, anti-CCP, RF-IgM, AKA, GPI + CCP, GPI + RF-IgM were 80% (72/90), 57% (51/90), 68% (61/90), 29% (26/ 90) ,92% (83/90)and 96% (86/90), respectively; the specificities were 97% (119/123), 95% (117/ 123 ) ,77% (95/123) ,95 % ( 117/123 ), 93% ( 115/123 ) and 76% ( 93/123 ), respectively. GPI level was significantly correlated with CCP and RF-IgM ( r = 0. 674 and 0. 533, P 〈 0.01 ) , but not correlated with AKA (r = 0. 12, P 〉 0. 05 ). The results suggest that serum glueose-6-phosphate isomerase level is a valuable indicator for early diagnosis of rheumatoid arthritis.

关 键 词:关节炎 类风湿 酶类 诊断 

分 类 号:R593.22[医药卫生—内科学]

 

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