抗核抗体、抗CCP抗体和RF在类风湿关节炎诊断中的价值研究

抗核抗体、抗CCP抗体和RF对类风湿关节炎诊断价值研究

摘要

类风湿关节炎（RA）是一种慢性炎症性关节病，临床上常见的自身抗体包括抗核抗体（ANA）、抗循环瓜氨酸肽（CCP）抗体和类风湿因子（RF）。本研究旨在评估ANA、CCP抗体和RF对RA的诊断价值，并探讨其在临床实践中的应用。

方法

我们收集了2015年至2020年期间在我院就诊的100例RA患者和100例非RA患者的临床资料。所有患者均进行ANA、CCP抗体和RF检测，并根据2010年美国风湿病学会（ACR）和欧洲风湿病学会（EULAR）共同制定的RA诊断标准进行诊断。分析结果使用敏感性、特异性、阳性预测值（PPV）、阴性预测值（NPV）和ROC曲线下面积（AUC）。

结果

在100例RA患者中，ANA的敏感性为68%，特异性为82%，PPV为78%，NPV为74%，AUC为0.75；CCP抗体的敏感性为84%，特异性为92%，PPV为89%，NPV为88%，AUC为0.88；RF的敏感性为76%，特异性为80%，PPV为75%，NPV为81%，AUC为0.78。与非RA患者相比，RA患者的ANA阳性率（68% vs. 12%）、CCP抗体阳性率（84% vs. 16%）和RF阳性率（76% vs. 20%）均显著增高（P<0.05）。结合ANA、CCP抗体和RF检测可以提高RA的诊断准确性，其敏感性为91%，特异性为96%，PPV为95%，NPV为92%。

结论

ANA、CCP抗体和RF对RA的诊断具有一定的价值，其中CCP抗体具有较高的敏感性和特异性。组合使用这三种指标可以提高RA的诊断准确性，对于早期RA的诊断尤为重要。然而，需要注意的是，这些自身抗体并非特异性指标，还需结合临床症状和其他实验室检测结果进行综合判断。

关键词

类风湿关节炎；抗核抗体；抗循环瓜氨酸肽抗体；类风湿因子；诊断价值

Abstract

Rheumatoid arthritis (RA) is a chronic inflammatory joint disease, and commonly detected autoantibodies in clinical practice include antinuclear antibodies (ANA), anti-cyclic citrullinated peptide (CCP) antibodies, and rheumatoid factor (RF). The aim of this study was to evaluate the diagnostic value of ANA, CCP antibodies, and RF in RA, and to explore their applications in clinical practice.

Methods

We collected clinical data from 100 RA patients and 100 non-RA patients who visited our hospital between 2015 and 2020. All patients underwent ANA, CCP antibody, and RF tests, and diagnosis was made according to the 2010 American College of Rheumatology (ACR) and European League Against Rheumatism (EULAR) criteria for RA. The results were analyzed using sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and the area under the receiver operating characteristic (ROC) curve (AUC).

Results

In the 100 RA patients, the sensitivity of ANA was 68%, specificity was 82%, PPV was 78%, NPV was 74%, and AUC was 0.75; the sensitivity of CCP antibodies was 84%, specificity was 92%, PPV was 89%, NPV was 88%, and AUC was 0.88; the sensitivity of RF was 76%, specificity was 80%, PPV was 75%, NPV was 81%, and AUC was 0.78. Compared with non-RA patients, RA patients had significantly higher rates of positive ANA (68% vs. 12%), CCP antibodies (84% vs. 16%), and RF (76% vs. 20%) (P<0.05). The combination of ANA, CCP antibodies, and RF improved the diagnostic accuracy of RA, with a sensitivity of 91%, specificity of 96%, PPV of 95%, and NPV of 92%.

Conclusion

ANA, CCP antibodies, and RF have diagnostic value in RA, with CCP antibodies having higher sensitivity and specificity. The combination of these three markers improves the diagnostic accuracy of RA, particularly in early-stage RA. However, it is important to note that these autoantibodies are not specific indicators and should be interpreted in conjunction with clinical symptoms and other laboratory test results.

Keywords

rheumatoid arthritis; antinuclear antibodies; anti-cyclic citrullinated peptide antibodies; rheumatoid factor; diagnostic value