Journals / Mikrobiyoloji Bülteni / 2003 / Cilt: 37 - Sayı: 2-3

The combination of antibodies against cyclic citrullinated peptide (Anti-CCP), with some other parameters used for the seriological diagnosis of rheumatoid arthritis

Siklik sitrülin peptid antikorları (Anti-CCP)'nin romatoid artritin serolojik tanısında kullanılan diğer bazı parametrelerle birlikteliği

Pages
163–170
Publication Date
2022-10-17
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The sensitivity of anti-CCP ELISA was 52.1% and specificity was 100%, when evaluated according to RF positivity as a main serologic marker of RA. in conclusion, anti-CCP antibody testing may be useful in the serologic diagnosis of RA patients, especially in combination with RF, however more detailed follow up clinical studies on the large number of patients with established RAwould be needed for our country.

📌 3 Key Takeaways

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Objective & Hypothesis:Rheumatoid arthritis (RA) is one of the most common rheumatic disease, which is primarily diagnosed by clinical history, physical examination, and laboratory tests, including a large number of biochemical and biologic markers.
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Key Findings & Data:For this purpose, the concentrations of RF and CRP were determined by guantitative immunonephelometry, titreş of ANAs by indirect immunofluorescence, and presence of anti-CCP by a commercial semiquantitative microELISA method, in 88 patients with clinically suspected RA, as well as 42 sex- and age-matched healthy blood donors.
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Conclusion & Impact:The sensitivity of anti-CCP ELISA was 52.1% and specificity was 100%, when evaluated according to RF positivity as a main serologic marker of RA. in conclusion, anti-CCP antibody testing may be useful in the serologic diagnosis of RA patients, especially in combination with RF, however more detailed follow up clinical studies on the large number of patients with established RAwould be needed for our country.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Rheumatoid arthritis (RA) is one of the most common rheumatic disease, which is primarily diagnosed by clinical history, physical examination, and laboratory tests, including a large number of biochemical and biologic markers. Recently, it has been shown that the amino acid citrulline, which is a unit of filaggrin, is a substantial component of the antigenic epitope, and enzyme immunoassays which use synthetic citrullinated peptide are highly effective tests for the detection of autoantibodies against cyclic citrullinated peptide (CCP), which are a new a highly specific marker for RA. The aim of this study was to investigate the presence of anti-CCP antibodies in RA suspected patients and to evaluate the combination of these autoantibodies with some other serologic markers such as IgM-rheumatoid factor (IgM-RF), C-reactive protein (CRP) and antinuclear antibodies (ANAs). For this purpose, the concentrations of RF and CRP were determined by guantitative immunonephelometry, titreş of ANAs by indirect immunofluorescence, and presence of anti-CCP by a commercial semiquantitative microELISA method, in 88 patients with clinically suspected RA, as well as 42 sex- and age-matched healthy blood donors. As a result, the high levels of IgM-RF and CRP were found in 48 (54.5%) and 49 (55.7%) of the patients, respectively, while 47 (53.4%) and 25 (28.4%) patients were found positive for ANAs and anti-CCP, respectively. Of 48 RF positive patients, 25 were also positive for anti-CCP and the distribution rates of the markers in 25 anti-CCP positive patients were as follows; 100% for RF, 84% for CRP and 52% for ANA. The sensitivity of anti-CCP ELISA was 52.1% and specificity was 100%, when evaluated according to RF positivity as a main serologic marker of RA. in conclusion, anti-CCP antibody testing may be useful in the serologic diagnosis of RA patients, especially in combination with RF, however more detailed follow up clinical studies on the large number of patients with established RAwould be needed for our country.

Özet

Sık görülen bir romatolojik hastalık olan Romatoid artrit (RA), hastanın klinik öyküsü, fizik muayene bulguları ve çok sayıda biyokimyasal ve biyolojik belirleyicinin araştırıldığı laboratuvar testleri ile tanımlanmaktadır. Son yıllarda, epidermal filagrinin bir komponenti olan sitrülin amino asidinin sentetik peptidlerinin kullanıldığı enzim immün yöntemleri (ELISA) ile anti-siklik sitrülin peptid (anti-CCP) otoantikorlarının saptanmasının, RA'in serolojik tanısında çok özgül bir belirleyici olduğu bildirilmektedir. Bu çalışmada, klinik olarak RA şüpheli 88 hasta ile cins ve yaş yönünden eşdeğer 42 sağlıklı kan donöründe anti-CCP antikorlarının araştırılması ve romatoid faktör (IgM-RF), C-reaktif protein (CRP) ve antinüklear antikorlar (ANA) gibi RA tanısında kullanılan diğer serolojik parametrelerle birlikteliğinin belirlenmesi amaçlanmıştır. RF ve CRP konsantrasyonları kantitatif immünonefelometre ile, ANA litreleri indirek immünofloresan yöntemiyle ve anti-CCP varlığı ticari bir mikroELISA kitiyle semikantitatif olarak araştırılmıştır. Hastaların 48'inde (%54.5) RF, 49'unda (%55.7) CRP, 47'sinde (%53.4) ANA ve 25'inde (%28.4) anti-CCP pozitifliği saptanmış, RF pozitif 48 hastanın 25'i anti-CCP pozitif bulunmuştur. Anti-CCP pozitif olan 25 hastanın hepsinde (%100) RF'nin, %84'ünde CRP'nin ve %52'sinde ANA'nın pozitif olduğu belirlenmiştir. RA için en önemli serolojik belirleyici kabul edilen RF pozitifliği dikkate alındığında, anti-CCP ELISA yönteminin duyarlılığı %52.1, özgüllüğü ise %100 olarak saptanmıştır. Sonuç olarak, anti-CCP antikorları RA'li hastaların serolojik tanısında özellikle RF ile birlikte kullanıldığında yararlı olabilir, ancak ülkemiz için daha geniş hasta popülasyonlarının klinik takibinin yapıldığı çalışmalara gereksinim vardır.

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Cite This Article

GÜLMEZ, D., US, D., HASÇELİK, G. (2022). The combination of antibodies against cyclic citrullinated peptide (Anti-CCP), with some other parameters used for the seriological diagnosis of rheumatoid arthritis. Mikrobiyoloji Bülteni, Cilt: 37 - Sayı: 2-3, 163–170. https://ajindex.com/articles/580480

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