ArticleThe Journal of rheumatology2026
Neutrophil Extracellular Trap Formation-Derived Peptidylarginine Deiminases in the Citrullination of Oral Bacteria to Promote Inflammation in Rheumatoid Arthritis.
Article in The Journal of rheumatology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
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Who cites it
1 citing paper in PubMed.
- Autoantibodies and T Cells Target Citrullinated and Homocitrullinated Antigens in Rheumatoid Arthritis.Immunological reviews · 2026Review
Corrections and comments
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Authors and funding
11 authors.
Funding
Abstract
objectivePeriodontal disease (PD) is an established risk factor for rheumatoid arthritis (RA). The objective of this study is to identify how oral bacterial infections occurring in damaged periodontal tissue in PD can lead to joint inflammation and destruction in RA.
methodsFour separate commensal oral bacteria species were cultured with human neutrophils to induce neutrophil extracellular trap formation (NETosis). The resultant NETs contained neutrophil-derived peptidylarginine deiminase 4 (PAD4), which, within the NET milieu, became activated and mediated citrullination of both bacterial and neutrophil self-proteins. Citrullination was evaluated by adding rabbit anticitrulline antibody followed by Alexa Fluor 647-conjugated antirabbit IgG secondary antibody.
resultsOur data demonstrate that citrullinated oral bacteria induce Toll-like receptor 9 (TLR9)-spleen tyrosine kinase (Syk)-mediated human B cell activation, differentiation, proliferation, and antibody secretion, including the development of plasmablasts secreting anticitrullinated protein antibodies (ACPAs). Some ACPAs bind citrullinated oral bacteria to form immune complexes (ICs) that can activate monocyte-derived macrophages in vitro to differentiate into CD11b
conclusionOur data support the hypothesis that in RA patients with PD, citrullinated oral bacteria breach damaged periodontal tissue to enter the circulation and induce both innate and adaptive proinflammatory responses that promote synovial tissue destruction.
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