Journals / Turkish Journal of Immunology / 2020 / Cilt: 8 - Sayı: 2

Comparison of Different Laboratory Methods in the Detection of Anti-dsDNA Antibodies and Their Diagnostic Utility

Anti-dsDNA Antikorlarının Varlığının ve Tanısal Değerinin Belirlenmesinde Farklı Laboratuvar Tanı Metotlarının Karşılaştırılması

Pages
37–43
Publication Date
2022-11-02
DOI
—
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AI Summary & Key Takeaways

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

We recommend to use CLIFT and ANA-IFA for first-line screening; and ANA-IB and ELISA for confirmation and identification of dsDNA.

📌 3 Key Takeaways

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Objective & Hypothesis:Introduction: We aimed to analyze the positivity of Crithidia luciliae immunofluorescence tests (CLIFT), to compare CLIFT with ANA-IFA (antinuclear antibody–immunofluorescence assay), ANA-IB (immunoblot), and ELISA (enzyme-linked immunoassays), and to determine the relevant method to test anti-dsDNA in systemic lupus erythematosus (SLE).
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Key Findings & Data:Materials and Methods: We conducted a retrospective, cross-sectional study between January 1st, 2015 and January 1st, 2016.
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Conclusion & Impact:We recommend to use CLIFT and ANA-IFA for first-line screening; and ANA-IB and ELISA for confirmation and identification of dsDNA.
🔬Design:Research Article
📍Scope:2015 Verileri
⚙️Variables:Domain Parameters

Abstract

Introduction: We aimed to analyze the positivity of Crithidia luciliae immunofluorescence tests (CLIFT), to compare CLIFT with ANA-IFA (antinuclear antibody–immunofluorescence assay), ANA-IB (immunoblot), and ELISA (enzyme-linked immunoassays), and to determine the relevant method to test anti-dsDNA in systemic lupus erythematosus (SLE). Materials and Methods: We conducted a retrospective, cross-sectional study between January 1st, 2015 and January 1st, 2016. We focused on the positive CLIFT results firstly, then, we compared the ANA-IFA, ELISA, and ANA-IB results to diagnose SLE. Demographic features were obtained from the hospital records. Results: To analyse CLIFT, 3242 seras were tested, and 72 (2.2%) were positive. Among CLIFT positivity [n=64; 57 female, 7 male (mean, range; 41.96, 11–82)]; 73% (n=47) had SLE. Out of 61 patients were analyzed by ANAIFA, 36 had peripheral (n=1) and homogenous (n=35) patterns; 83% (n=30) had SLE. Out of 46 patients were analyzed by ANA-IB, 30 had dsDNA; 73% (n=22) had SLE. Out of 25 patients who were analyzed by ELISA, 18 had dsDNA; 83% (n=15) had SLE. In the two-sided correlations, CLIFT positivity (≥grade 2) was found to be statistically significantly associated with having SLE (p=0.005, r [64]=0.92); CLIFT positivity was also statistically significantly associated with ANA-IFA (p=0.003, r=0.85). In order to exclude SLE diagnosis, CLIFT positivity was statistically significantly correlated with ANA-IB (p=0.002, r=0.90). Conclusion: CLIFT can not be used instead of ELISA and ANA-IB, but it can reduce their usage. We recommend to use CLIFT and ANA-IFA for first-line screening; and ANA-IB and ELISA for confirmation and identification of dsDNA.

Özet

Giriş: CLIFT (Crithidia luciliae immünofloresan test) pozitifliğinin sıklığını belirlemeyi, CLIFT’i ANA-IFA (anti-nükleer antikor-immünfloresan analizi), ANA-IB (immünblot) ve ELISA (enzim-bağlantılı immün analiz) ile kıyaslamayı ve SLE’de (sistemik lupus eritematozus) anti-dsDNA’yi saptamak için uygun yöntemi belirlemeyi amaçladık. Gereç ve Yöntemler: 1 Ocak 2015 ile 1 Ocak 2016 arasında geriye dönük kesitsel bir çalışma gerçekleştirilmiştir. Öncelikle, CLIFT pozitif sonuçlara odaklandık, sonrasında CLIFT pozitif hastaların ANA-IFA, ELISA ve ANA-IB sonuçları incelendi ve laboratuvar yöntemleri SLE tanısı ile karşılaştırıldı. Hastaların demografik özellikleri hastane kayıtlarından elde edilmiştir. Bulgular: CLIFT analizi için, toplam 3242 serum çalışıldı ve bunların 72’si (%2,2) pozitifti. CLIFT pozitiflikleri (n=64; 57 kadın / 7 erkek) arasında ortalama yaş 41,96 (aralık, 11–82) ve %73’ü (n=47) SLE tanılıydı. ANA-IFA 61 olguda çalışıldı; periferik (n=1) ve homojen (n=35) örüntü 36’sında mevcuttu ve bu olguların %83’ü (n=30) SLE tanılıydı. Kırkaltı hastada ANA-IB çalışıldı; ve 30’unda dsDNA saptandı. Bunların %73’ü (n=22) SLE tanılı idi. Hastaların 25’inde ELISA metodu kullanıldı ve bunların 18’inde pozitiflik saptandı. %83’ü (n=15) SLE tanılıydı. İki yönlü korelasyonlarda, CLIFT pozitifliği (≥2. derece), SLE tanısı ile güçlü korelasyon gösterdi (p=0.005, r [64]=0,92); SLE tanısını doğrulamada; CLIFT testi ANA-IFA ile ileri derecede ilişkili bulundu (p=0.003, r=0,85). Ayrıca SLE tanısını dışlamada; CLIFT ile ANA-IB güçlü korelasyon gösterdi (p=0.002, r=0,90). Sonuç: CLIFT, ELISA ve immünoblot tetkiklerinin yerini alamaz, fakat onların kullanımını azaltabilir. Sonuçta, CLIFT ve ANA-IFA’nın ilk basamak görüntülemede; ANA-IB ve ELISA’nın ise doğrulama ve tanımlamada kullanımını önermekteyiz.

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Cite This Article

SİN, A. Z., DALGIÇ, C. T., GÖKMEN, E. N. M. (2022). Comparison of Different Laboratory Methods in the Detection of Anti-dsDNA Antibodies and Their Diagnostic Utility. Turkish Journal of Immunology, Cilt: 8 - Sayı: 2, 37–43. https://ajindex.com/articles/607174

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