抗CCP抗体、抗MCV抗体和类风湿因子在早期类风湿关节炎中的诊断价值

目的探讨抗CCP抗体、抗MCV抗体和类风湿因子在早期类风湿关节炎中的诊断价值。方法选择于2016年1月至2017年1月期间在我院就诊的早期类风湿关节炎(RA)患者及其他骨关节病患者各40例,并选择40名同期在我院体检的健康人作为研究对象。其中风湿关节炎患者设为RA组,其他骨关节病患者为疾病对照组,健康人为正常对照组。采用免疫透射比浊法、酶联免疫吸附法(ELISA)、免疫散射比浊法分别测定三组的抗环瓜氨酸肽(CCP)抗体、抗突变型瓜氨酸波形蛋白(MCV)抗体及IgM型类风湿因子(IgM-RF)水平,比较抗CCP抗体、抗MCV抗体、IgM-RF单独检测及三个指标联合检测对早期类风湿性关节炎的诊断价值。结果①RA组的抗CCP抗体、抗MCV抗体、IgM-RF水平均明显高于疾病对照组与正常对照组,差异具有统计学意义(P<0.05);疾病对照组与正常对照组间差异无统计学意义(P>0.05)。②RA组的抗CCP抗体、抗MCV抗体、IgM-RF及联合检测的阳性率均明显高于疾病对照组与正常对照组,差异具有统计学意义(P<0.05);疾病对照组与正常对照组间差异无统计学意义(P>0.05)。③联合检测的灵敏度及阴性预测值均明显高于抗CCP抗体、抗MCV抗体、IgM-RF单独检测,差异具有统计学意义;抗CCP抗体与抗MCV抗体的特异性及阳性预测值均明显高于IgM-RF及联合检测,差异具有统计学意义(P<0.05)。结论早期RA患者的血清中存在抗CCP抗体、抗MCV抗体、IgM-RF的高表达,且其灵敏度及特异性均较高,临床上可联合检测抗CCP抗体、抗MCV抗体及IgM-RF,以提高RA的早期诊断率。     

类风湿因子及相关自身抗体对类风湿关节炎的诊断价值

目的探讨类风湿因子（RF）、抗环瓜氨酸肽抗体（抗CCP）及抗角蛋白抗体（AKA）联合检测对类风湿关节炎（RA）的临床诊断价值。方法对80例RA和65例非RA的其他自身免疫病患者检测RF、RF-IgM、抗CCP及AKA 4种指标。结果自身免疫性疾病女性发病较高,以RA组为甚;RA组的RF、RF-IgM、抗CCP及AKA高于其他自身免疫性疾病组;单指标检测RA诊断的敏感性为RF〉RF-IgM〉AKA〉抗CCP,特异性为RF-IgM〉抗CCP〉RF〉AKA。阳性预测值为抗CCP〉RF〉RF-IgM、AKA,阴性预测值为RF〉RF-IgM〉AKA〉抗CCP;以并联或串联方式联合检测均以RF、RF-IgM及抗CCP三联及RF、RF-IgM、抗CCP及AKA四联检测为佳,并联检测的敏感性分别为93%及97%,串联检测的特异性分别为98%及99%。结论 RF、RF-IgM、抗CCP及AKA 4种指标联合检测可提高对RA诊断的敏感性和特异性,对RA的早期诊断有较高价值。     

RF、AKA和抗CCP抗体联检对类风湿关节炎诊断的临床价值

目的:探讨类风湿因子(Rheum atoid factor,RF)、抗角质蛋白抗体(antikeratin antibody,AKA)及抗环瓜氨酸肽(anti-cyc lic c itru llinated peptide,CCP)抗体对类风湿关节炎(rheum atoid arthritis,RA)的临床意义和早期应用价值。方法:对40例类风湿关节炎患者、30例系统性红斑狼疮和30名正常健康体检者进行RF、AKA、抗CCP抗体检测,应用速率散射比浊法测定RF,间接免疫荧光法检测AKA,ELISA法测定抗CCP抗体。结果:40例RA患者血清中,RF灵敏度和特异性分别为70.0%、90.0%,AKA灵敏度和特异性分别为35.0%、96.7%,抗CCP抗体灵敏度和特异性分别为85.0%、93.3%,联检RF、AKA及抗CCP抗体灵敏度和特异性分别为97.07%、99.8%。结论:RF、AKA和抗CCP抗体可作为诊断RA比较特异的血清学指标,三项指标联检可在一定程度上弥补RF对RA的诊断不足,提高RA的阳性诊断率,且有助于疾病的预后判断。     

抗角蛋白抗体及相关自身抗体在RA诊断中的应用评价

目的 评价抗角蛋白抗体（AKA）及其相关自身抗体对诊断类风湿关节炎（RA）的敏感性和特异性以及在临床上的意义。方法 收集血清279例，包括正常人30例，RA56例，SLE114例，其它结缔组织病179例，检测AKA（IFA）、RF、ANA及ssDNA。结果 4种自身抗体对诊断RA疾病的敏感性和特异性为：AKA39．3％和96．0％；RF37．5％和85．5％；ANA55．4％和39．5％；ssDNA37．5％和49．8％；敏感性无显著性差异（P＞0．05），特异性则AKA明显高于其它3种抗体（P＜0．001）。RF阳性率在RA患者AKA阳性组和阴性组有显著性差异（P＜0．001），且RF含量与AKA滴度呈正相关；而ssDNA和ANN则无显著性差异（P＞0．05）。结论 AKA是RA的又一个特异性抗体，联合检测AKA及RF对于RA的诊断与早期诊断具有重要意义。     

抗环瓜氨酸肽抗体检测对类风湿关节炎的临床诊断价值

目的探讨抗环瓜氨酸肽抗体（抗CCP抗体）检测对类风湿关节炎（RA）诊断的意义。方法采用酶联免疫吸附试验（ELISA）检测115份人血清的抗CCP抗体,同时采用免疫透射比浊法定量检测类风湿因子（RF）,包括40例RA患者,45例其它风湿病患者,30名正常人;并分析抗CCP抗体与RF实验结果之间的相关性。结果在40例RA病人中,抗CCP抗体的阳性率为80.0%,在其它风湿病人中的阳性率为7.0%,抗CCP抗体对RA的敏感性和特异性分别为80.0%、96.0%,其敏感性高于RF,但差异无统计学意义（P〉0.05）,特异性明显高于RF（P〈0.05）。联合应用抗CCP抗体与RF进行诊断,二者均阳性时敏感性为65.0%,特异性为97.3%。抗CCP抗体与RF实验结果之间无相关性。结论抗CCP抗体对RA具有较好的敏感性和很高的特异性,可与RF相互补充,联合检测可提高对RA早期诊断的准确性。     

自身抗体和类风湿因子联合检测在类风湿性关节炎中的诊断价值

目的:探讨自身抗体和类风湿因子(Rheumatoid factor,RF)联合检测在类风湿性关节炎(Rheumatoid arthritis,RA)中的诊断价值.方法:选取2019年3月至2020年12月我院收治的RA患者119例,另选同期非RA风湿免疫性疾病患者及健康者各120例,分别纳入RA组、非RA组和对照组.分别采用速率散射比浊法、酶联免疫吸附试验和间接免疫荧光法检测各组RF、抗环瓜氨酸肽(Cyclic citrullinated peptide,CCP)抗体、抗角蛋白抗体(Anti-keratin antibody,AKA)及抗核周因子(Anti-perinuclear factor,APF),并计算阳性率,分析自身抗体与RF联合检测对RA的诊断价值.结果:RA组RF、抗CCP抗体、AKA、APF阳性率均高于非RA组和对照组(P<0.05).单独检测时,RF灵敏度最高,特异度最低(P<0.05);抗CCP抗体、AKA、APF灵敏度、特异度差异均无统计学意义(P>0.05).4项指标联合检测时较单独检测的灵敏度升高,特异度降低.结论:自身抗体和RF对诊断RA均有一定的临床意义,联合检测可提高诊断结果准确性,具有较高的诊断价值.     

第二代抗环瓜氨酸肽抗体的检测在类风湿关节炎诊断中的意义

目的探讨抗环瓜氮酸肽（CCP）抗体的检测在类风湿关节炎（RA）诊断中的价值。方法ELISA法分别检测108例RA、89例非RA（其它风湿病患者）和78例健康体检者的抗CCP抗体；用间接免疫荧光法和速率散射比浊法检测抗角蛋白抗体（AKA）和类风湿因子（RF），分析CCP抗体的水平及与AKA、RF的相关性。结果抗CCP抗体的阳性率在RA中为87．4％（94／108），在非RA中为8．99％（8／89），正常人为0％（0／78）。3种抗体对RA诊断的敏感性和特异性分别为CCP87．4％、91．01％，AKA58．33％，82．24％，RF81．36％、75．35％。CCP抗体与AKA在RA患者血清中的阳性率之间差异非常显著，与RF差异不显著。3种方法的检测结果间存在相关性。结论用ELISA法检测血清中CCP抗体简便、结果可靠，对RA诊断具有高度的敏感性和特异性。     

联合检测HLA-DR4、抗CCP抗体和抗Sa抗体在类风湿关节炎诊断中应用价值

目的 探讨联合检测HLA-DR4、抗CCP抗体和抗Sa抗体在类风湿关节炎诊断中应用价值.方法 在2014年10月至2017年1月期间,选取我院就诊的109例RA患者作为研究对象,选取同期我院收治的94例非RA患者和90例健康体检者作为对照组.比较三组患者血清HLA-DR4、抗CCP抗体和抗Sa抗体的阳性率、三项指标联合检测对RA诊断学指标.结果 RA组患者血清HLA-DR4、抗CCP抗体和抗Sa抗体阳性率显著高于非RA组和对照组(P<0.05).在HLA-DR4、抗CCP抗体和抗Sa抗体三个指标中,抗CCP抗体的灵敏度和特异性最高(P<0.05).在联合检测中,HLA-DR4、抗CCP抗体和抗Sa抗体联合检测的灵敏度和特异性最高(P<0.05).结论 HLA-DR4、抗CCP抗体和抗Sa抗体联合检测可以提高对类风湿关节炎的诊断准确率,可作为临床辅助诊断手段.     

抗CCP抗体、APF在类风湿关节炎诊断中的意义

目的 探讨抗环瓜氨酸肽抗体(抗CCP抗体)、抗核周因子(APF)在类风湿关节炎(RA)诊断中的意义.方法 以2013年6月至2015年8月在我院接受治疗的100例RA患者为观察对象,同时选取100例干燥综合征和100例健康成年人作为对照.观察3组研究对象抗CCP抗体、APF阳性率的差异,比较炎症细胞因子水平的变化,探讨抗CCP抗体、APF联合检测对RA诊断的特异性和灵敏度.结果 3组患者抗CCP抗体、APF阳性率从高到低分别为RA组、干燥综合征组和对照组;3组患者的IL-18、IL-6和hs-CRP水平由高到低分别为RA组、干燥综合征组、对照组;RA患者的抗CCP抗体、APF阳性率与IL-18和hs-CRP水平正相关,而与IL-6水平无明显相关关系;抗CCP抗体、APF联合检测对RA诊断的灵敏度为60.53%,特异性为68.87%,明显高于上述指标单项检测时的灵敏度和特异性.结论 抗环瓜氨酸肽抗体和抗核周因子阳性表达率在类风湿性关节炎患者中较高,并与患者血清炎症细胞因子水平密切相关,且两者联合检测的灵敏度和特异性较高,可作为临床检测的重要指标.     

抗CCP抗体和抗MCV抗体在RA中的表达及意义

为探讨抗环瓜氨酸肽(cyclic citrullinated peptide, CCP)抗体和抗突变型瓜氨酸波形蛋白(mutated citrullinated vimentin, MCV)抗体在RA中的表达及临床意义,选择185例RA初诊患者作为RA组,70例其他风湿性疾病患者作为疾病对照组,80例健康者作为健康对照组,采用ELISA检测入选对象的血清抗CCP抗体、抗MCV抗体和RF水平,并监测其治疗前后的浓度变化情况。结果显示,抗CCP抗体和抗MCV抗体在RA组患者中的表达水平显著高于疾病对照组和健康对照组(P0.05);抗CCP抗体和抗MCV抗体诊断RA的灵敏度分别为83.8%和91.4%,诊断RF阴性RA的灵敏度分别为65.2%和81.0%。抗CCP抗体和抗MCV抗体在关节肿胀数 3、Sharp评分 50、DAS28高评分RA患者中的水平明显升高(P0.05),抗MCV抗体水平在CRP 50 mg/L、有关节腔积液的RA患者中明显升高(P0.05)。在RA缓解组中,抗MCV抗体水平在治疗3个月后明显下降(P0.05),抗CCP抗体在治疗6个月后明显下降(P0.05);在RA未缓解组中,抗CCP抗体和抗MCV抗体水平在治疗前后差异均无统计学意义(P 0.05)。提示抗CCP抗体和抗MCV抗体不仅在RA诊断和治疗中有较高的临床意义,两者联合检测还有利于对RA患者骨破坏情况、炎症反应等临床特征进行判断。     

抗CCP抗体与RF联合检测在类风湿关节炎早期诊断中的意义

目的 探究抗CCP抗体与RF联合检测在类风湿关节炎早期诊断中的意义。方法 选取2017年11月~2018年11月我院收治的30例类风湿关节炎患者设为研究组,另选取同期进行健康体检者30例设为对照组,对两组进行抗CCP抗体与RF联合检测,并且分析抗CCP抗体、RF单独及两者联合检测的敏感性、特异性、阳性预测值和阴性预测值。结果 研究组抗CCP抗体阳性率96.67%、RF阳性率93.33%和两者联合检测阳性率86.67%均高于对照组的6.67%、3.33%及3.33%;研究组抗CCP抗体水平（78.65±14.33）U/ml和RF水平（314.22±20.56）IU/ml均高于对照组的（2.69±2.14）U/ml和（10.01±3.54）IU/ml（P＜0.05）。结论 对类风湿关节炎患者抗CCP抗体与RF的诊断敏感度拥有着一定的相似性,但抗CCP抗体特异度高于RF的特异度,若两者联合检测可极大提高敏感度,对于类风湿关节炎患者早期诊断工作的开展拥有着积极的推动作用。     

微粒子酶免疫化学发光法和ELISA定量检测CCP抗体的临床应用评价

目的:应用化学发光法、酶联免疫吸附试验(ELISA)定量检测类风湿性关节炎(RA)患者抗环瓜氨酸多肽(CCP)抗体的含量,探讨CCP抗体在RA早期诊断和治疗中的作用.方法:选取69例RA、30例强直性脊柱炎(AS)、33例干燥综合征(SS)患者、61例健康体检人群,分别用化学发光、ELISA检测其血清CCP抗体的含量....     

抗环瓜氨酸肽抗体、葡萄糖6-磷酸异构酶及类风湿因子的检测及对类风湿关节炎的诊断价值

目的为寻找敏感性高、特异性强的诊断类风湿关节炎(RA)的实验指标,选择抗环瓜氨酸肽(CCP)抗体、葡萄糖6-磷酸异构酶(GPI)和类风湿因子(RF)并探讨对RA的诊断价值。方法抗CCP抗体和GPI试验采用酶联免疫吸附(ELISA)法,RF用胶乳凝集法,检测了125例RA患者(RA组)、56例其他风湿性疾病患者(对照组)和36例健康体检者(正常组)血清中上述3者的浓度。结果抗CCP抗体、GPI及RF,在RA组分别是:(83.6±45.9)RU/ml、(2.8±2.3)μg/ml和(320.4±208.6)IU/ml;在对照组分别是:(36.2±15.3)RU/ml、(0.19±0.06)μg/ml和(36.3±12.5)IU/ml;在正常组分别是:(19.2±8.6)RU/ml、(0.16±0.08)μg/ml和(19.2±6.5)IU/ml。在RA组中,3者的敏感度分别是64.8%、73.6%和69.6%,特异性分别是92.0%、72.8%和74.4%。结论 RA患者血清抗CCP抗体、GPI和RF显著高于其他疾病患者(P<0.01)。抗CCP抗体和GPI有可能成为诊断RA的新指标、RA的血清标志物,对提高诊断RA的敏感性和特异性,具有良好的临床研究和推广价值。     

Usefulness of anti-cyclic citrullinated peptide antibodies (anti-CCP) for the diagnosis of rheumatoid arthritis

Rheumatoid factor (RF) has been commonly used as a marker of rheumatoid arthritis (RA). RF can be detected in 60-80% of RA patients, but the specificity is low against other rheumatic diseases patients. We evaluated the diagnostic accuracy of anti-cyclic citrullinated peptide antibody (anti-CCP), a new diagnostic test for RA. Anti-CCP demonstrated higher sensitivity (81.0%) and specificity (92.4%). By the receiver operating characteristic (ROC) curve analysis, anti-CCP was superior to other markers (ie. RF, CARF, IgG-RF, and MMP-3). In early RA patients (RA patients who had had disease symptoms for < 2 years), sensitivity was 68.8%. Positivities of anti-CCP in RA patients became higher as the advance of stage defined by the Steinbrocker classification. We concluded that anti-CCP is a very valuable tool for the diagnosis of RA. Moreover, anti-CCP is a useful for finding RA of recent onset.     

Value of anti-cyclic citrullinated peptides antibodies in comparison with rheumatoid factor for rheumatoid arthritis diagnosis

The detection of anti-cyclic citrullinated peptides (CCP) antibodies is a new marker for diagnosis of rheumatoid arthritis. We screened 100 patients suffering from rheumatic pathologies or from other affections where rheumatoid factor is frequently detected. The screening was assessed by a second generation ELISA (Immunoscan RA) in comparison with agglutination assay (Latex and Waaler-Rose) and specific ELISA (IgM, IgG and IgA). The sensitivity of the anti-CCP is good (>70%) with an excellent specificity (98%). In our study the predictive value of the Immunoscan RA reached 71% and more among patients with joints symptoms. Anti-CCP antibody test could serve as a better diagnosis marker than rheumatoid factor.     

New biomarkers for rheumatoid arthritis

Rheumatoid factor (RF) has been commonly used as a biomarker of rheumatoid arthritis (RA). It is important to diagnose RA early and to prevent joint destruction before irreversible damage occurs. For this purpose, several new biomarkers, such as anti-cyclic citrullinated peptide antibody (anti-CCP) and matrix metalloproteinase-3 (MMP-3), have become available for both the diagnosis and prognosis of RA. RF showed a tolerable sensitivity of 68.5% for RA, but low specificity of 77.1% for patients with other rheumatic diseases. Anti-agalactosyl IgG antibodies (CARF) showed a slightly higher sensitivity of 73.9%, but specificity as low as that for RF. In contrast, anti-CCP demonstrated high sensitivity of 76.1% and marked specificity of 92.4% for patients with other rheumatic diseases. Anti-CCP was significantly superior to other biomarkers on receiver-operating characteristic curve (ROC) analysis. Moreover, meta-analysis revealed that the pooled sensitivity and specificity were 67% and 95% for anti-CCP, and 69% and 85% for RF, respectively, and that anti-CCP was more specific than RF for diagnosing RA. On the other hand, MMP-3 has been suggested to be a prognostic biomarker as well as an evaluative biomarker for RA. We next examined if the diagnostic accuracy of early RA is improved by combining these biomarkers. The specificity of RF was not as high as anti-CCP but rose to 92% when combined with MMP-3. Thus, we concluded that anti-CCP is superior to other biomarkers in terms of diagnostic accuracy, and that these combined assays are useful in the early diagnosis of RA.     

Anti-cyclic citrullinated peptide antibodies are highly associated with severe bone lesions in rheumatoid arthritis anti-CCP and bone damage in RA

In the present study we investigated the predictive value of anti-cyclic citrullinated peptide antibodies (anti-CCP) in early rheumatoid arthritis (RA) with respect to the bone damage. Fifty-four patients with early RA (onset <12 months), 35 classified as established RA (onset >12 months), 33 healthy donors and 76 non-RA autoimmune diseases, were enrolled. Anti-CCP and IgG, IgA, IgM rheumatoid factors (RFs) were determined at baseline. Disease activity score (DAS 28) was calculated at the entry. Bone involvement was evaluated by X-rays and sonography. The specificity of anti-CCP was 98.4%; significantly higher than those of the IgM- (86.0%), IgA- (86.0%) and IgG-RFs (66.2%), respectively. Anti-CCP were detected in 23/54 (42.6%) early RA patients and in 16/35 (45.7%) established RA patients. In the early RA group, 6/33 (18.2%) of the patients without bone lesions, 12/16 (75%) with juxta-articular osteoporosis (JO) and 5/5 with joint erosions (JE) resulted positive showing a significant difference between the groups without and with radiological damage. In the established RA group a significant difference being between the group without radiological damage and that with JE was found. Finally, in patients without radiological lesions, examined by ultrasound, anti-CCP antibodies were detected only in subjects with pathologic findings (31.25%). Data here reported confirm that the presence of anti-CCP are specific for diagnosis of RA, of recent onset also and they are potentially useful as prognostic index of bone involvement.