Journals / Mikrobiyoloji Bülteni / 2021 / Cilt: 55 - Sayı: 3

Investigation of the Clinical Significance of Anti-Dense Fine Speckled 70 (anti-DFS70) Autoantibody and Determination of Accompanying Pathologies

Anti-Dense Fine Speckled 70 (anti-DFS70) Otoantikorunun Klinik Öneminin Araştırılması ve Eşlik Eden Patolojilerin Belirlenmesi

Pages
415–425
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

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

Therefore it is essential to evaluate these pathologies in patients positive for anti-DFS70 antibodies.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Autoantibodies targeting nuclear and cytoplasmic autoantigens are used as markers in the diagnosis and classification of systemic autoimmune rheumatic diseases (SARD).
📊
Key Findings & Data:DFS70 antibodies have been reported in healthy individuals, various autoimmune disorders, infection, cancer and inflammatory conditions.
💡
Conclusion & Impact:Therefore it is essential to evaluate these pathologies in patients positive for anti-DFS70 antibodies.
🔬Design:Research Article
📍Scope:2017 · 5710 samples
⚙️Variables:Domain Parameters

Abstract

Autoantibodies targeting nuclear and cytoplasmic autoantigens are used as markers in the diagnosis and classification of systemic autoimmune rheumatic diseases (SARD). The dense fine speckled (DFS) pattern is characterized by the fine-granular fluorescence of the nuclei in the interphase and the metaphase chromatin. DFS70 antibodies have been reported in healthy individuals, various autoimmune disorders, infection, cancer and inflammatory conditions. But there is still lack of information about its clinical significance. This study aimed to investigate the clinical significance of anti-DFS70 autoantibodies and the determination of accompanying pathologies. A total of 5710 serum samples routinely requested for ANA screening were tested between 2017 and 2019. Antinuclear antibody (ANA) and dsDNA were performed by indirect immunofluorescence method (IIF) (Euroimmun, Germany). Immunoblot (IB) method was used for the extractable nuclear antigen profile (ENA) (Euroimmun, Germany). Demographic and clinical data, were investigated from the medical records. Among 5710 samples tested for ANA, 23.7% were ANA positive by IIF. Mean age of the patients were 47.9 and 79.5% were female. Only 8.1% of the study group had SARD. The frequency of DFS pattern by ANA-IIF was 6.0% (342/5710), (mean age ± SD= 44.4 ± 16.7, 88% female). DFS70 pattern-positive patients were sub-grouped according to their diagnosis. SARD were detected 10.8% (mean age ± SD= 55.12 ± 14.10) in DFS70 pattern positive patient group (RA 6.1%, SS 2.6%, SLE 0.9%, SSc 0.6%, UCTD 0.6%). Autoantibodies accompanying anti-DFS70 antibody were determined as Ro-52, SS-A, nucleosome, histone, AMA-M2, dsDNA, respectively. Non-SARD diseases were determined in 89.2% of the patients with positive DFS70 pattern. Non-SARD diseases were detected as musculoskeletal complaints (47.4%), other rheumatic diseases like fibromyalgia (14.3%), dermatological diseases (9.4%), gastrointestinal system diseases (5.6%), hematological disorders (3.8%), thyroid /parathyroid diseases (3.5%), allergic diseases (2.3%), neurological diseases (2.3%) and neoplasia (breast cancer) (0.6%). The anti-DFS70 autoantibody is widely used to exclude the diagnosis of SARD in the absence of concomitant SARD-related autoantibodies. It has been observed that anti-DFS70 autoantibody may be associated with non-SARD rheumatic diseases and in many diseases (dermatological, gastrointestinal system, hematological, thyroid diseases) related to other systems. Therefore it is essential to evaluate these pathologies in patients positive for anti-DFS70 antibodies.

Özet

Nükleer ve sitoplazmik otoantijenleri hedefleyen otoantikorlar, sistemik otoimmün romatizmal hastalıkların (SORH) tanı ve sınıflandırılmasında belirteç olarak kullanılmaktadır. Dense fine speckled (DFS) paterni interfaz evresinde nükleusda ve metafaz kromatininde yoğun ince benekli tarzda boyanma gösterir. Anti-DFS70 antikorları sağlıklı kişilerde, çeşitli otoimmün bozukluklarda, enfeksiyonda, kanserde ve enflamatuvar durumlarda bildirilmiş olmakla birlikte klinik önemi hakkında bilgiler hala yetersizdir. Bu çalışmada, anti-DFS70 otoantikorlarının klinik öneminin araştırılması ve eşlik eden patolojilerin belirlenmesi amaçlanmıştır. 2017-2019 yılları arasında rutin ANA taraması için gönderilen toplam 5710 serum örneği test edilmiştir. Örnekler antinükleer antikor (ANA) ve dsDNA indirekt immünfloresan yöntemleri (IIF) (Euroimmun, Almanya) ile çalışılmıştır. Ekstrakte edilebilir nükleer antijen (ENA) profili için immünoblot (IB) yöntemi (Euroimmun, Almanya) kullanılmıştır. Demografik ve klinik veriler, tıbbi kayıtlar incelenerek elde edilmiştir. ANA-IIF ile test edilen 5710 örneğin %23.7’si ANA pozitif bulunmuştur. Hastaların ortalama yaşı 47.9 ve %79.5’i kadın olarak tespit edilmiş ve çalışma grubunun sadece %8.1’inde SORH saptanmıştır. IIF-ANA testine göre DFS70 paterni sıklığı %6.0 (342/5710) olarak belirlenmiştir (Ortalama yaş ± Ss= 44.4 ± 16.7,%88 kadın). DFS70 paterni saptanan hastalar tanılarına göre alt gruplara ayrılmıştır. DFS70 paterni pozitif hasta grubunda %10.8 oranında (ortalama yaş ± Ss= 55.12 ± 14.10) SORH saptanmıştır (RA %6.1, SS %2.6, SLE %0.9, SSc %0.6, UCTD %0.6). Anti-DFS70 antikoruna eşlik eden otoantikorlar sırasıyla Ro-52, SS-A, nükleozom, histon, AMA-M2, dsDNA olarak belirlenmiştir. Anti-DFS70 paterni pozitif hastaların %89.2’sinde SORH dışı hastalıklar saptanmıştır. Kas iskelet sistemi şikayetleri (%47.4), fibromiyalji gibi diğer romatizmal hastalıklar (%14.3), dermatolojik hastalıklar (%9.4), gastrointestinal sistem hastalıkları (%5.6), hematolojik bozukluklar (%3.8), tiroid/paratiroid hastalıkları (%3.5), alerjik hastalıklar (%2.3), nörolojik hastalıklar (%2.3) ve neoplazi (meme kanseri) (%0.6) SORH dışı hastalıklar olarak belirlenmiştir. Anti-DFS70 otoantikoru, eşlik eden SORH ile ilişkili otoantikorların yokluğunda SORH teşhisini dışlamak için yaygın olarak kullanılmaktadır. Anti-DFS70 otoantikorunun SORH dışı romatizmal hastalıklarla ve diğer sistemlerle ilgili birçok hastalıkla (dermatolojik, gastrointestinal sistem, hematolojik, tiroid hastalıkları) ilişkili olabileceği gözlenmiştir. Bu nedenle, anti-DFS70 antikorları pozitif hastalarda bu patolojilerin değerlendirilmesi önemlidir.

🔖

Cite This Article

DURAN, A. Ç., BARUT, K., DURAN, A., DAĞLAR, D. E. (2021). Investigation of the Clinical Significance of Anti-Dense Fine Speckled 70 (anti-DFS70) Autoantibody and Determination of Accompanying Pathologies. Mikrobiyoloji Bülteni, Cilt: 55 - Sayı: 3, 415–425. https://ajindex.com/articles/341056

References (14)

  1. Solomon DH, Kavanaugh AJ, Schur PH, American College of Rheumatology Ad Hoc Committee on Immunologic Testing Guidelines. Evidence based guidelines for the use of immunologic tests: antinuclear antibody testing. Arthritis Rheum 2002; 47(4): 434-44
  2. Wei Q, Jiang Y, Xie J, Lv Q, Xie Y, Tu L, et al. Analysis of antinuclear antibody titers and patterns by using HEp-2 and primate liver tissue substrate indirect immunofluorescence assay in patients with systemic autoimmune rheumatic diseases. J Clin Lab Anal 2020; 34(12): e23546
  3. Ochs RL, Mahler M, Basu A, Rios-Colon L, Sanchez TW, Andrade LE, et al. The significance of autoantibodies to DFS70/LEDGFp75 in health and disease: integrating basic science with clinical understanding. Clin Exp Med 2016; 16(3): 273-93
  4. Conrad K, Röber N, Andrade LE, Mahler M. The clinical relevance of anti-DFS70 autoantibodies. Clin Rev Allergy Immunol 2017; 52(2): 202-16
  5. Mahler M, Andrade LE, Casiano CA, Malyavantham K, Fritzler MJ. Anti-DFS70 antibodies: an update on our current understanding and their clinical usefulness. Expert Rev Clin Immunol 2019;15(3):241-50
  6. Kang SY, Lee WI, Kim MH, La Jeon Y. Clinical use of anti-DFS70 autoantibodies. Rheumatol Int 2019;39(8):1423-9
  7. Ganapathy V, Casiano CA. Autoimmunity to the nuclear autoantigen DFS70 (LEDGF): what exactly are the autoantibodies trying to tell us? Arthritis Rheum 2004; 50(3): 684-8
  8. Ganapathy V, Daniels T, Casiano CA. LEDGF/p75: a novel nuclear autoantigen at the crossroads of cell survival and apoptosis. Autoimmun Rev 2003; 2(5): 290-7
  9. Malyavantham K, Suresh L. Analysis of DFS70 pattern and impact on ANA screening using a novel HEp-2 ELITE/DFS70 knockout substrate. Auto Immun Highlights 2017; 8(1): 3
  10. Sharma P, Singh DP, Fatma LT, Chylack LT Jr, Shinohara T. Activation of LEDGF gene by thermal- and oxidative-stresses. Biochem Biophys Res Commun 2000; 276(3): 1320-4
  11. Dai L, Li J, Ortega R, Qian W, Casiano CA, Zhang JY. Preferential autoimmune response in prostate cancer to cyclin B1 in a panel of tumor-associated antigens. J Immunol Res 2014; 2014: 827827
  12. Sener AG, Afsar I. Frequency of dense fine speckled pattern in immunofluorescence screening test. Eur J Rheumatol 2015; 2(3): 103-5
  13. Carter JB, Carter S, Saschenbrecker S, Goeckeritz BE. Recognition and relevance of anti-DFS70 autoantibodies in routine antinuclear autoantibodies testing at a community hospital. Front Med (Lausanne) 2018;5:88
  14. Yumuk Z, Demir M. Clinical value