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001-es BibID:	BIBFORM130040
035-os BibID:	(WoS)001496459600001 (Scopus)105006790506
Első szerző:	Aradi Zsófia (belgyógyász szakorvos)
Cím:	Additive Value of Rheumatoid Factor Isotypes in Sjögren's Syndrome Patients with Joint Complaints of Different Etiologies : Can Rheumatoid Factor IgA Serve as an Early, Poor Prognostic Biomarker Candidate? / Zsófia Aradi, Bernadett Bói, Gábor Nagy, Péter Antal-Szalmás, Kincső Mezei, Ildikó Fanny Horváth, Antónia Szántó
Dátum:	2025
ISSN:	1661-6596 1422-0067
Megjegyzések:	The aim of the paper was to characterize rheumatoid factor IgA, IgG, and IgM isotypes in patients with Sjögren's syndrome (SS) subsets, based on the absence or presence of joint complaints of different etiologies. In total, 164 SS patients were grouped based on whether they had polyarthritis as an extraglandular manifestation (n = 73, SS+pa), rheumatoid arthritis as an associated autoimmune disorder (n = 46, SS+RA), or Sjögren's syndrome without inflammatory joint pain (n = 45, SS). The highest IgA rheumatoid factor isotype levels were detected in SS patients, whereas the lowest levels were found in the SS+RA group, without a significant difference. Neither IgG nor IgM RF differed significantly between the patient subclasses. In addition to other disease-specific markers, seropositive patients who were seropositive for any RF isotype were significantly more frequently anti-Ro/SS-A and anti-La/SS-B positive and had higher ESSDAI levels. In SS and SS+pa patients, a strong negative correlation was observed between IgA RF and age, whereas a strong positive correlation was found between IgA RF and ESSDAI, RF, IgA, IgG, anti-Ro/SS-A, and anti-La/SS-B levels. High total IgG levels together with high IgA RF levels occurred most frequently in SS patients (p = 0.05), whereas the combination of normal IgG and high IgM RF was significantly more frequent in the SS+RA group. The co-occurrence of high total IgG and normal IgM RF did not differ significantly between the patient subsets; however, this was the combination with the highest sensitivity (94.5%) for SS+pa patients. Based on our findings, rheumatoid factor isotypes have an additive value in the differentiation of non-erosive polyarthritis and erosive rheumatoid arthritis during the disease course of patients with Sjögren's syndrome. All rheumatoid factor isotypes predict a more severe disease course, but IgA RF may serve as a candidate for being an early, poor prognostic factor for SS patients.
Tárgyszavak:	Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Sjögren's syndrome polyarthritis rheumatoid arthritis rheumatoid factor isotypes rheumatoid factor biomarker
Megjelenés:	International Journal Of Molecular Sciences. - 26 : 10 (2025), p. 1-13. -
További szerzők:	Bói Bernadett Nagy Gábor (1974-) (laboratóriumi szakorvos, laboratóriumi hematológus és immunológus) Antal-Szalmás Péter (1968-) (laboratóriumi szakorvos) Mezei Kincső (1995-) (orvos) Horváth Ildikó Fanny (1980-) (belgyógyász, allergológus, klinikai immunológus) Szántó Antónia (1977-) (belgyógyász, allergológus és klinikai immunológus)
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001-es BibID:	BIBFORM124893
035-os BibID:	(scopus)85199625554 (wos)001276665500001
Első szerző:	Aradi Zsófia (belgyógyász szakorvos)
Cím:	Polyarthritis in Sjögren's Syndrome : Difficulties in Distinguishing Extraglandular Manifestation and Associated Rheumatoid Arthritis / Aradi Zsófia, Nagy Gábor, Horváth Ildikó Fanny, Antal-Szalmás Péter, Szántó Antónia
Dátum:	2024
ISSN:	2075-4418
Megjegyzések:	Aim of the study was to investigate the demographic data and disease course characteristics of patients with Sjögren's syndrome (SS) and inflammatory joint pain of various origins and to search for factors that might help with the distinction of polyarthritis as an extraglandular manifestation and rheumatoid arthritis as an associated systemic autoimmune disorder. A total of 355 patients were retrospectively analyzed, 128 of whom served as controls (SS-C), while 159 had polyarthritis as an extraglandular symptom of Sjögren's syndrome (SS-pa) and 68 were diagnosed as having associated rheumatoid arthritis (SS-RA). The patients without any inflammatory joint manifestations were significantly older than the SS-pa patients, while, for the SS-RA group, the difference was not significant. The onset of joint pain appeared significantly earlier in the SS-RA patients. Regarding either extraglandular manifestations or associated autoimmune disorders, there were significant differences between the controls and both SS-pa and SS-RA groups, while no significant difference was found between the SS-pa and SS-RA groups. Thus, laboratory and imaging methods should be used to differentiate between the two conditions, but laboratory biomarkers are even more important for early diagnosis. A ROC curve analysis showed an acceptable diagnostic accuracy in differentiating between SS-pa and SS-RA patients using a binary logistic regression model, where highly positive rheumatoid factor (RF) and anti-cyclic citrullinated peptide (CCP) values, kidney involvement, and anti-Ro/SS-A positivity were shown to significantly raise the odds of having RA, whereas anti-La/SS-B positivity seemed to have a protective role, since it significantly decreased the odds of having it. Further biomarkers are needed to better classify SS patient cohorts with inflammatory joint pain of different origins and, consequently, different management requirements.
Tárgyszavak:	Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Sjögren's syndrome associated rheumatoid arthritis polyarthritis extraglandular manifestation
Megjelenés:	Diagnostics. - 14 : 14 (2024), p. 1-12.-
További szerzők:	Nagy Gábor (1974-) (laboratóriumi szakorvos, laboratóriumi hematológus és immunológus) Horváth Ildikó Fanny (1980-) (belgyógyász, allergológus, klinikai immunológus) Antal-Szalmás Péter (1968-) (laboratóriumi szakorvos) Szántó Antónia (1977-) (belgyógyász, allergológus és klinikai immunológus)
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001-es BibID:	BIBFORM117653
035-os BibID:	(Scopus)85182501705 (WoS)001165669900001
Első szerző:	Nagy Gábor (laboratóriumi szakorvos, laboratóriumi hematológus és immunológus)
Cím:	A novel way to evaluate autoantibody interference in samples with mixed antinuclear antibody patterns in the HEp-2 cell based indirect immunofluorescence assay and comparison of conventional microscopic and computer-aided pattern recognition / Gábor Nagy, Róza Földesi, István Csípő, Tünde Tarr, Gabriella Szűcs, Antónia Szántó, Tamás Bubán, Zoltán Szekanecz, Mária Papp, János Kappelmayer, Péter Antal-Szalmás
Dátum:	2024
ISSN:	0009-8981
Megjegyzések:	Background: A major challenge of the HEp-2 cell-based indirect immunofluorescence (IIF) assays is the correct identification of the individual anti-nuclear antibodies (ANAs) if more than one is present in a sample. We created artificial mixes by pooling two different samples with a single autoantibody in different titers. Comparison of the expected and observed patterns and titers clarifies the interference between the two tested ANAs. Methods: Serum samples with a single homogeneous or speckled ANA pattern were serially diluted and mixed in 16 combinations, providing end-point titers of 1:5,120 to 1:80 for both patterns. These mixes were tested by a HEp-2 IIF assay and were evaluated by conventional evaluation, the EUROPattern (EPa) system and on-screen analysis. Results: Homogeneous pattern can alter the identification of the speckled pattern much more than vice versa, but both has an interfering effect on the other. The effect of the interfering on the tested pattern was higher if the titer of the former one was higher. The pattern recognition efficacy of conventional and the on-screen evaluation was similar and superior compared to the EPa analysis. Conclusions: The application of artificial mixed samples can help the evaluation of the efficacy of manual and computer-aided ANA HEp-2 pattern recognition.
Tárgyszavak:	Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk antinukleáris antitest ANA kevert antinukleáris antitest mintázatok autoantitest indirekt immunfluoreszcencia számítógéppel segített mintázatfelismerés képelemzés mintázatfelismerő algoritmus automatizált mikroszkóp fluoreszcens mikroszkóp INDIREKT IMMUNFLUORESZCENS TESZT HEp-2
Megjelenés:	Clinica Chimica Acta. - 553 (2024), p. 1-9. -
További szerzők:	Földesi Róza (1967-) (klinikai laboratóriumi kutató, PhD hallgató) Csípő István (1953-) (vegyész) Tarr Tünde (1976-) (belgyógyász, allergológus és klinikai immunológus) Szűcs Gabriella (1963-) (belgyógyász, allergológus és klinikai immunológus, reumatológus) Szántó Antónia (1977-) (belgyógyász, allergológus és klinikai immunológus) Bubán Tamás (1967-) (belgyógyász, gasztroenterológus) Szekanecz Zoltán (1964-) (reumatológus, belgyógyász, immunológus) Papp Mária (1975-) (belgyógyász, gasztroenterológus) Kappelmayer János (1960-) (laboratóriumi szakorvos) Antal-Szalmás Péter (1968-) (laboratóriumi szakorvos)
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001-es BibID:	BIBFORM088059
035-os BibID:	(WOS)000596438400019 (Scopus)85092717075
Első szerző:	Nagy Gábor (laboratóriumi szakorvos, laboratóriumi hematológus és immunológus)
Cím:	Anti-neutrophil cytoplasmic antibody testing by indirect immunofluorescence : computer-aided versus conventional microscopic evaluation of routine diagnostic samples from patients with vasculitis or other inflammatory diseases / Gábor Nagy, István Csípő, Tünde Tarr, Gabriella Szűcs, Antónia Szántó, Tamás Bubán, Nóra Sipeki, Zoltán Szekanecz, Mária Papp, János Kappelmayer, Péter Antal-Szalmás
Dátum:	2020
ISSN:	0009-8981
Megjegyzések:	Background: Detection of anti-neutrophil cytoplasmic antibodies (ANCA) by indirect immunofluorescence assays (IFA) is of diagnostic importance in vasculitides and some other inflammatory diseases. Automation of IFA may be beneficial in high-throughput clinical laboratories. An analytical appraisal of the EUROPattern (EPa) automated microscope and image analysis system has not been reported in a routine clinical laboratory setting testing samples from both vasculitis and non-vasculitis patients. Methods: Results of EPa and on-screen ANCA pattern recognition of 568 consecutive routine serum samples were compared to those of conventional visual evaluation. Results: Agreement of discrimination between negative and non-negative samples was 86.1% comparing EPa and conventional reading, and it increased to 96.7% after on-screen user validation. Importantly, from the 334 samples classified as negative by EPa 328 (98.2%) were also negative by conventional evaluation. Pattern recognition showed 'moderate' agreement between classical microscopic and EPa analysis (kappa = 0.446) and 'very good' agreement after user validation (kappa = 0.900). Misclassification by EPa was dominantly due to the presence of anti-nuclear/cytoplasmic antibodies (incorrect pattern, 80/568) and the lower fluorescence cut-off of the automated microscope (false positives, 73/568). Conclusions: Automated ANCA testing by EPa is a reliable alternative of classical microscopic evaluation, though classification of sera needs correction by trained personnel during on-screen validation.
Tárgyszavak:	Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Clinica Chimica Acta. - 511 (2020), p. 117-124. -
További szerzők:	Csípő István (1953-) (vegyész) Tarr Tünde (1976-) (belgyógyász, allergológus és klinikai immunológus) Szűcs Gabriella (1963-) (belgyógyász, allergológus és klinikai immunológus, reumatológus) Szántó Antónia (1977-) (belgyógyász, allergológus és klinikai immunológus) Bubán Tamás (1967-) (belgyógyász, gasztroenterológus) Sipeki Nóra (1987-) (általános orvos) Szekanecz Zoltán (1964-) (reumatológus, belgyógyász, immunológus) Papp Mária (1975-) (belgyógyász, gasztroenterológus) Kappelmayer János (1960-) (laboratóriumi szakorvos) Antal-Szalmás Péter (1968-) (laboratóriumi szakorvos)
Pályázati támogatás:	GINOP-2.3.2-15-2016-00048 GINOP EFOP-3.6.1-16-2016-00022 EFOP EFOP-3.6.2-16-2017-00006 EFOP
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