ArticleFrontiers in immunology2023
Autoantibodies against complement factor B in rheumatoid arthritis.
Article in Frontiers in immunology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 9 citations in OpenAlex.
- The rheumatoid arthritis citrullinome is enriched in antigenic complement proteins.Arthritis research & therapy · 2026Article
- Update in the diagnosis of complement-mediated thrombotic microangiopathy/atypical hemolytic uremic syndrome.Hematology. American Society of Hematology. Education Program · 2025Review
- Autoantibodies Against Factor B and Factor H Without Pathogenic Effects in a Patient with Immune Complex-Mediated Membranoproliferative Glomerulonephritis.Biomedicines · 2025Article
- The Causal Relationships and Therapeutic Targets of Plasma Proteins in Ankylosing Spondylitis.Biomedicines · 2025Article
- Pain mechanism and management strategy of rheumatoid arthritis.Frontiers in pain research (Lausanne, Switzerland) · 2025Review
- Anti-factor B antibodies in atypical hemolytic uremic syndrome.Pediatric nephrology (Berlin, Germany) · 2024Article
Corrections and comments
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Authors and funding
7 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Rheumatoid arthritis (RA) is a chronic inflammatory autoimmune disorder affecting the joints. Many patients carry anti-citrullinated protein autoantibodies (ACPA). Overactivation of the complement system seems to be part of the pathogenesis of RA, and autoantibodies against the pathway initiators C1q and MBL, and the regulator of the complement alternative pathway, factor H (FH), were previously reported. Our aim was to analyze the presence and role of autoantibodies against complement proteins in a Hungarian RA cohort. To this end, serum samples of 97 ACPA-positive RA patients and 117 healthy controls were analyzed for autoantibodies against FH, factor B (FB), C3b, C3-convertase (C3bBbP), C1q, MBL and factor I. In this cohort, we did not detect any patient with FH autoantibodies but detected C1q autoantibodies in four patients, MBL autoantibodies in two patients and FB autoantibodies in five patients. Since the latter autoantibodies were previously reported in patients with kidney diseases but not in RA, we set out to further characterize such FB autoantibodies. The isotypes of the analyzed autoantibodies were IgG2, IgG3, IgGκ, IgGλ and their binding site was localized in the Bb part of FB. We detected
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