摘要
目的探讨青海地区回族类风湿关节炎(RA)患者抗环瓜氨酸多肽(CCP)抗体水平与血清肽酰基精氨酸脱亚氨酶(PADI)基因多态性的关系,及两者在RA发病机制中的意义。方法选择我院风湿科2009年6月—2011年11月住院及门诊回族RA患者63例为病例组,选择同期我院回族健康体检者54例为对照组。采用酶联免疫吸附试验(ELISA法)检测两组受试者抗CCP抗体水平,魏氏法检测红细胞沉降率(ESR),免疫散射比浊法检测C反应蛋白(CRP)和类风湿因子(RF)水平。根据GenBank号NT_004610序列查找PADI4基因多态性位点,即PADI4-94、PADI4-104、PADI4-92,其基因多态性分型采用聚合酶链反应(PCR)产物扩增后收集DNA片段进行测序。采用RA疾病活动评分(DAS28评分)评价病例组患者疾病活动性,HAQ生活质量问卷(HAQ评分)评价其生活质量。结果 (1)两组ESR、CRP水平、抗CCP抗体水平及RF水平比较,差异均有统计学意义(P<0.05)。(2)病例组患者DAS28评分平均为(4.89±0.17)分,HAQ评分平均为(8.07±1.03)分。(3)PADI4-94位点的基因型为A/A、G/G、A/G,PADI4-104位点为A/A、G/G、A/G,PADI4-92位点为C/C、G/G、G/C。3个位点不同基因型RA患者抗CCP水平比较,差异均无统计学意义(P>0.05)。(4)Pearson相关分析显示,RA患者抗CCP抗体水平与DAS28评分(r=0.25,P=0.018)、HAQ评分(r=0.22,P=0.04)及ESR(r=0.81,P=0.001)均呈正相关,与CRP、RF无相关性。结论青海地区回族RA患者血清抗CCP抗体水平高于回族健康人群,并与DAS28评分、HAQ评分及ESR呈正相关,提示抗CCP抗体可作为评价回族RA患者疾病活动度的指标,PADI4基因多态性可能与抗CCP抗体形成无相关性。
Objective To investigate the anti-cyclic citrullinated peptide(CCP)antibody levels in patients with rheumatoid arthritis and explore its relationship with serum peptide arginine eiminase polymorphism.Methods The serum anti-CCP antibody level in 63 RA patients and 54 healthy controls was determined with enzyme linked immunosorbent assay(ELISA).Erythrocyte sedimentation rate(ESR)was measured with Westergren method.C-reactive protein(CRP)and rheumatoid factor(RF)were determined with immune scatter turbidimetry.RA PADI4-94,PADI4-104 and PADI4-92 gene polymorphism sites were identified in GenBank(NT_004610).The polymorphism types were amplified with polymerase chain reaction and the DNA fragments were sequenced.Results There were significant differences between the two groups compared with ESR,CRP,anti-CCP and RF levels(P0.05).The average disease activity score(DAS28)was(4.89±0.17),and the quality of life score(HAQ)was(8.07±1.03).The genotypes in RA PADI4-94 were A/A,G/G,and A/G,in PADI4-104 were A/A,G/G,and A/G,and in PADI4-92 were C/C,G/G,and G/C.The CCP level had no significant differences among these types(P0.05).Pearson′s correlation analysis showed that the anti-CCP antibody level was positively correlated with DAS28(r=0.25,P=0.018),HAQ(r=0.22,P=0.04),and ESR(r=0.81,P=0.001);However,no correlation was observed between the anti-CCP antibody and CRP and RF.Conclusion The anti-CCP antibody level is high among RA patients than the healthy individuals among Hui population and is positively correlated with DAS28 scores,HAQ scores,and ESR.It may be a useful indicator for assessing the disease activity in population.The development of PADI4 polymorphism may be not associated with the anti-CCP antibody.
出处
《中国全科医学》
CAS
CSCD
北大核心
2012年第32期3734-3736,共3页
Chinese General Practice
基金
2010年青海省科技厅自然基金课题(2010-Z-725)
关键词
关节炎
类风湿
肽酰基精氨酸脱亚氨酶
多态性
单核苷酸
抗环瓜氨酸抗体
Arthritis
rheumatoid
Peptidylarginine eiminase
Polymorphism
single nucleotide
Anti-cyclic citrullinated peptides antibodies