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  1. Book: Autoantibodies in organ specific autoimmune diseases

    Conrad, Karsten / Schößler, Werner / Hiepe, Falk / Fritzler, Marvin J.

    a diagnostic reference

    (Autoantigens, autoantibodies, autoimmunity ; Volume 8)

    2017  

    Author's details Karsten Conrad, Werner Schößler, Falk Hiepe, Marvin J. Fritzler
    Series title Autoantigens, autoantibodies, autoimmunity ; Volume 8
    Collection
    Keywords Autoaggressionskrankheit ; Serodiagnostik ; Autoantikörper
    Subject Serologische Diagnostik ; Serologische Untersuchung ; Serumdiagnostik ; Immundiagnostik ; Immunodiagnostik ; Autoantikörperkrankheit ; Autoimmunkrankheit ; Autoimmunopathie ; Autoimmunerkrankung
    Language English
    Size XVI, 348 Seiten, Illustrationen
    Edition second edition
    Publisher Pabst Science Publishers
    Publishing place Lengerich ; Berlin ; Bremen ; Miami ; Riga ; Viernheim ; Wien ; Zagreb
    Publishing country Germany
    Document type Book
    HBZ-ID HT019513374
    ISBN 978-3-95853-348-6 ; 9783958533493 ; 3-95853-348-5 ; 3958533493
    Database Catalogue ZB MED Medicine, Health

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  2. Article ; Online: Update on autoantibodies and related biomarkers in autoimmune inflammatory myopathies.

    Choi, May Y / Satoh, Minoru / Fritzler, Marvin J

    Current opinion in rheumatology

    2023  Volume 35, Issue 6, Page(s) 383–394

    MeSH term(s) Humans ; Autoantibodies ; Myositis/diagnosis ; Autoimmune Diseases ; Biomarkers
    Chemical Substances Autoantibodies ; Biomarkers
    Language English
    Publishing date 2023-07-27
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1045317-9
    ISSN 1531-6963 ; 1040-8711
    ISSN (online) 1531-6963
    ISSN 1040-8711
    DOI 10.1097/BOR.0000000000000957
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Comment on: Concordance between myositis autoantibodies and anti-nuclear antibody patterns in a real-world, Australian cohort.

    Mahler, Michael / Satoh, Minoru / Fritzler, Marvin J

    Rheumatology (Oxford, England)

    2022  Volume 61, Issue 9, Page(s) e290–e291

    MeSH term(s) Antibodies, Antinuclear ; Australia ; Autoantibodies ; Cohort Studies ; Humans ; Myositis
    Chemical Substances Antibodies, Antinuclear ; Autoantibodies
    Language English
    Publishing date 2022-03-18
    Publishing country England
    Document type Letter ; Comment
    ZDB-ID 1464822-2
    ISSN 1462-0332 ; 1462-0324
    ISSN (online) 1462-0332
    ISSN 1462-0324
    DOI 10.1093/rheumatology/keac155
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Autoantibodies in SLE: prediction and the

    Choi, M Y / Fritzler, M J

    Lupus

    2019  Volume 28, Issue 11, Page(s) 1285–1293

    Abstract: Autoantibodies (AA) and antinuclear antibodies (ANA) serve as key diagnostic and classification criteria for systemic lupus erythematosus (SLE). More than 200 different AA have been reported in SLE, although only a handful (<20) are considered " ... ...

    Abstract Autoantibodies (AA) and antinuclear antibodies (ANA) serve as key diagnostic and classification criteria for systemic lupus erythematosus (SLE). More than 200 different AA have been reported in SLE, although only a handful (<20) are considered "mainstream" because they are widely and routinely used in diagnostic, research and clinical medicine. Although the vast majority of AA have been relegated to the diminished status of "orphan" AA, some serve as predictors of SLE because they first appear in very early or subclinical SLE. Some AA are pathogenic, whereas others are thought to protect against or ameliorate disease progression and, hence, taken together can be used as predictive biomarkers of prognosis. Although studies have shown that specific AA are detected in the preclinical phase of SLE and are biomarkers of increased risk of developing the disease, AA are currently not widely used to predict very early SLE in individuals who have low pretest probability of disease. With the advent of multianalyte arrays with analytic algorithms, emerging evidence indicates that when certain combinations of biomarkers, such as the interferon signature and stem cell factor accompany AA and ANA, the predictive power for SLE is markedly increased.
    MeSH term(s) Antibodies, Antinuclear/immunology ; Autoantibodies/immunology ; Biomarkers/metabolism ; Disease Progression ; Humans ; Lupus Erythematosus, Systemic/diagnosis ; Lupus Erythematosus, Systemic/immunology ; Lupus Erythematosus, Systemic/physiopathology ; Prognosis
    Chemical Substances Antibodies, Antinuclear ; Autoantibodies ; Biomarkers
    Language English
    Publishing date 2019-08-09
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 1154407-7
    ISSN 1477-0962 ; 0961-2033
    ISSN (online) 1477-0962
    ISSN 0961-2033
    DOI 10.1177/0961203319868531
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Anti-KIF20B autoantibodies in systemic autoimmune rheumatic diseases: Their high prevalence in systemic lupus erythematosus.

    Koizumi, Haruka / Muro, Yoshinao / Yamashita, Yuta / Takeichi, Takuya / Fritzler, Marvin J / Akiyama, Masashi

    The Journal of dermatology

    2023  Volume 50, Issue 8, Page(s) 990–998

    Abstract: The kinesin superfamily protein 20B (KIF20B), also known as M-phase phosphoprotein-1, is a plus-end ...

    Abstract The kinesin superfamily protein 20B (KIF20B), also known as M-phase phosphoprotein-1, is a plus-end-directed motor enzyme for cytokinesis. Anti-KIF20B antibodies have been reported in idiopathic ataxia, but no previous studies have examined anti-KIF20B antibodies in systemic autoimmune rheumatic diseases (SARDs). We aimed to establish methods for detecting anti-KIF20B antibodies and to investigate the clinical significance of these antibodies in SARDs. Serum samples from 597 patients with various SARDs and 46 healthy controls (HCs) were included. Fifty-nine samples that had been examined by immunoprecipitation using the recombinant KIF20B protein produced by in vitro transcription/translation were used for establishing the ELISA cutoff with the same recombinant protein for measuring the anti-KIF20B antibodies. The ELISA performed well, showing close agreement with the immunoprecipitation results (Cohen's κ >0.8). The ELISA results for 643 samples showed the prevalence of anti-KIF20B to be higher in the systemic lupus erythematosus (SLE) patients than in the HCs (18/89 vs. 3/46, P = 0.045). Since no SARD other than SLE had higher frequencies of anti-KIF20B antibodies than those of the HCs, we investigated the clinical characteristics of anti-KIF20B antibody-positive cases in SLE. The score on the SLE Disease Activity Index-2000 (SLEDAI-2K) was significantly higher for the anti-KIF20B-positive SLE patients than for the anti-KIF20B-negative SLE patients (P = 0.013). In a multivariate regression analysis of the anti-single-stranded deoxyribonucleic acid, anti-double-stranded deoxyribonucleic acid, and anti-KIF20B antibodies, the presence of anti-KIF20B antibody was significantly associated with high SLEDAI-2K scores (P = 0.003). Anti-KIF20B antibodies were found in ~20% of patients with SLE and were associated with high SLEDAI-2K scores. Much larger cohort and longitudinal studies are needed to confirm the association between anti-KIF20B antibodies and SLE.
    MeSH term(s) Humans ; Autoantibodies ; Prevalence ; Lupus Erythematosus, Systemic ; DNA ; Rheumatic Diseases ; Kinesins
    Chemical Substances Autoantibodies ; DNA (9007-49-2) ; KIF20B protein, human (EC 3.6.1.-) ; Kinesins (EC 3.6.4.4)
    Language English
    Publishing date 2023-04-26
    Publishing country England
    Document type Journal Article
    ZDB-ID 800103-0
    ISSN 1346-8138 ; 0385-2407
    ISSN (online) 1346-8138
    ISSN 0385-2407
    DOI 10.1111/1346-8138.16813
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: A Quality Assessment of Aquaporin-4 & Myelin Oligodendrocyte Glycoprotein Antibody Testing.

    Krett, Jonathan D / Fritzler, Marvin J / Alikhani, Katayoun / Burton, Jodie M

    The Canadian journal of neurological sciences. Le journal canadien des sciences neurologiques

    2022  Volume 50, Issue 6, Page(s) 861–869

    Abstract: Background: Accurate anti-aquaporin-4 (AQP4) and anti-myelin oligodendrocyte glycoprotein (MOG) autoantibody assays are needed to effectively diagnose neuromyelitis optica spectrum disorder and MOG antibody-associated disease. A proportion of patients ... ...

    Abstract Background: Accurate anti-aquaporin-4 (AQP4) and anti-myelin oligodendrocyte glycoprotein (MOG) autoantibody assays are needed to effectively diagnose neuromyelitis optica spectrum disorder and MOG antibody-associated disease. A proportion of patients at our centre have been tested for anti-AQP4 and anti-MOG autoantibodies locally, followed by an outsourced test as part of real-world practice. Outsourced testing is costly and of unproven utility. We conducted a quality improvement project to determine the value of outsourced testing for anti-AQP4 and anti-MOG autoantibodies.
    Methods: All patients seen by Calgary neurological services who underwent cell-based testing for anti-AQP4 and/or anti-MOG autoantibodies at both MitogenDx (Calgary, AB) and Mayo Clinic Laboratories (Rochester, MN, USA) between 2016 and 2020 were identified from a provincial database. The interlaboratory concordance was calculated by pairing within-subject results collected no more than 365 days apart. Retrospective chart review was done for subjects with discordant results to determine features associated with discordance and use of outsourced testing.
    Results: Fifty-seven anti-AQP4 and 46 anti-MOG test pairs from January 2016 to July 2020 were analyzed. Concordant tests pairs comprised 54/57 (94.7%, 95%CI 88.9-100.0%) anti-AQP4 and 41/46 (89.1%, 95%CI 80.1-98.1%) anti-MOG results. Discordant anti-AQP4 pairs included two local weak positives (negative when outsourced) and one local negative (positive when outsourced). Discordant anti-MOG pairs were all due to local weak positives (negative when outsourced).
    Conclusion: Interlaboratory discordant results for cell-based testing of anti-AQP4 autoantibodies were rare. Local anti-MOG weak positive results were associated with discordance, highlighting the need for cautious interpretation based on the clinical context. Our findings may reduce redundant outsourced testing.
    Language English
    Publishing date 2022-11-18
    Publishing country England
    Document type Journal Article
    ZDB-ID 197622-9
    ISSN 0317-1671
    ISSN 0317-1671
    DOI 10.1017/cjn.2022.324
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Outcomes associated with antiphospholipid antibodies in COVID-19: A prospective cohort study.

    Mendel, Arielle / Fritzler, Marvin J / St-Pierre, Yvan / Rauch, Joyce / Bernatsky, Sasha / Vinet, Évelyne

    Research and practice in thrombosis and haemostasis

    2023  Volume 7, Issue 1, Page(s) 100041

    Abstract: ... when available) for aPL (anticardiolipin immunoglobulin [Ig]M/IgG, anti-β2-glycoprotein I IgM/IgG ...

    Abstract Background: The significance of antiphospholipid antibodies (aPL) in COVID-19 remains uncertain.
    Objectives: We determined whether aPL are associated with COVID-19 and/or thrombosis or adverse outcomes during hospitalization for COVID-19.
    Methods: Symptomatic adults tested for SARS-CoV-2 for clinical reasons (March-July 2020) with either ≥1 positive polymerase chain reaction (COVID-19+) or all negative (non-COVID-19) results were recruited to a biobank collecting plasma, clinical data, and outcomes. We tested baseline plasma samples (days 0-7) of all subjects (and day-30 samples in the COVID-19+ subjects, when available) for aPL (anticardiolipin immunoglobulin [Ig]M/IgG, anti-β2-glycoprotein I IgM/IgG, antiphosphatidylserine/prothrombin IgM/IgG, and lupus anticoagulant). We compared the baseline prevalence of aPL between the COVID-19+ and non-COVID-19 subjects. Among hospitalized COVID-19+ subjects, multivariable logistic regression was used to evaluate the association of aPL (and their subtypes) with arterial or venous thromboembolic events, acute kidney injury, intensive care unit admission, mechanical ventilation, and death after adjusting for potential confounders.
    Results: At baseline, 123 of 289 (43%) COVID+ subjects had ≥1 aPL versus 116 of 261 (32%) non-COVID-19 subjects (difference, 10%; 95% CI, 3%-18%). Among 89 COVID+ subjects with repeated samples, aPL persisted on day 30 in 15 of 34 (44%) subjects with baseline aPL positivity, and half of those without aPL at baseline developed one or more new aPL. In hospitalized COVID-19 subjects (
    Conclusion: In patients with COVID-19, aPL may help identify an increased risk of thrombosis and other adverse outcomes.
    Language English
    Publishing date 2023-01-07
    Publishing country United States
    Document type Journal Article
    ISSN 2475-0379
    ISSN (online) 2475-0379
    DOI 10.1016/j.rpth.2023.100041
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: High intelligence may exacerbate paediatric inflammatory response to SARS-CoV-2 infection.

    McDonagh Hull, Pauline / Lashewicz, Bonnie M / Fritzler, Marvin J

    Medical hypotheses

    2021  Volume 155, Page(s) 110677

    Abstract: The body's innate and acquiredimmunesystems are critical in responses to a wide spectrum of assaults, including SARS-CoV-2 infection. We identify studies of autoimmunity to support our hypothesis that a high intelligence quotient (IQ) may put children at ...

    Abstract The body's innate and acquiredimmunesystems are critical in responses to a wide spectrum of assaults, including SARS-CoV-2 infection. We identify studies of autoimmunity to support our hypothesis that a high intelligence quotient (IQ) may put children at increased risk for severe COVID-19 sequelae; especially those whose viral load is high and/or who develop multisystem inflammatory syndrome in children (MIS-C). MIS-C is associated with a higher risk of COVID-19 morbidity and death, even in otherwise healthy children. As information and evidence about SARS-CoV-2 infection continue to expand, our hypothesis suggests adding a potentially intriguing piece to the pandemic puzzle for further investigation. Drawing on a select review of published research and case reports, we discuss immune dysregulation in paediatric patients with a high IQ, including post-infection cytokine expression in the myocardium. Further, we provide a review of 27 paediatric (≤19 years; median age 16) cases of severe COVID-19 outcomes, drawn from media sources published between March and September 2020, in which we identify possible evidence of a 'hyper brain, hyper body' response to infection. We aver these cases are noteworthy given that paediatric death with COVID-19 disease is remarkably rare, and the estimated prevalence of a high IQ (or giftedness) is only 2% in the general population. These observations warrant prospective and retrospective studies of autoinflammatory markers and mechanisms to elucidate any special psychoneuroimmunological vulnerability in children with a high IQ, as such studies may raise implications for how and when prophylactic medical care is provided to children.
    MeSH term(s) Adolescent ; COVID-19 ; Child ; Humans ; Intelligence ; Prospective Studies ; Retrospective Studies ; SARS-CoV-2 ; Systemic Inflammatory Response Syndrome
    Language English
    Publishing date 2021-09-09
    Publishing country United States
    Document type Journal Article
    ZDB-ID 193145-3
    ISSN 1532-2777 ; 0306-9877
    ISSN (online) 1532-2777
    ISSN 0306-9877
    DOI 10.1016/j.mehy.2021.110677
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Diagnostic Utility of Anticarbamylated Protein Antibodies as Measured Using Carbamylated Fetal Calf Serum.

    Mahler, Michael / Fritzler, Marvin J

    The Journal of rheumatology

    2018  Volume 45, Issue 3, Page(s) 438–439

    MeSH term(s) Arthritis, Rheumatoid ; Autoantibodies ; Connective Tissue Diseases ; Humans
    Chemical Substances Autoantibodies
    Language English
    Publishing date 2018-03-02
    Publishing country Canada
    Document type Letter ; Comment
    ZDB-ID 194928-7
    ISSN 1499-2752 ; 0315-162X
    ISSN (online) 1499-2752
    ISSN 0315-162X
    DOI 10.3899/jrheum.170677
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Detection of myositis-specific antibodies: additional notes.

    Mahler, Michael / Fritzler, Marvin J

    Annals of the rheumatic diseases

    2018  Volume 78, Issue 5, Page(s) e45

    MeSH term(s) Adolescent ; Adult ; Dermatomyositis ; Humans ; Myositis ; Rheumatic Diseases ; Rheumatology
    Language English
    Publishing date 2018-02-14
    Publishing country England
    Document type Letter ; Comment
    ZDB-ID 7090-7
    ISSN 1468-2060 ; 0003-4967
    ISSN (online) 1468-2060
    ISSN 0003-4967
    DOI 10.1136/annrheumdis-2018-213153
    Database MEDical Literature Analysis and Retrieval System OnLINE

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