WFRF:(Ekwall Anna Karin H)
Sökning: WFRF:(Ekwall Anna Karin H) > Cartilage destructi...
Cartilage destruction in early rheumatoid arthritis patients correlates with CD21−/low double-negative B cells
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- Thorarinsdottir, Katrin (författare)
- University of Gothenburg,Gothenburg University,Göteborgs universitet,Institutionen för medicin, avdelningen för reumatologi och inflammationsforskning,Institute of Medicine, Department of Rheumatology and Inflammation Research,National University Hospital of Iceland
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- McGrath, Sarah (författare)
- University of Gothenburg,Gothenburg University,Göteborgs universitet,Institutionen för medicin, avdelningen för reumatologi och inflammationsforskning,Institute of Medicine, Department of Rheumatology and Inflammation Research
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- Forslind, Kristina (författare)
- Lund University,Lunds universitet,Reumatologi och molekylär skelettbiologi,Sektion III,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Spenshults artrit grupp,Forskargrupper vid Lunds universitet,Rheumatology,Section III,Department of Clinical Sciences, Lund,Faculty of Medicine,Spenshults arthritis group,Lund University Research Groups,Spenshult Research and Development Center
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- 2024
- 2024
- Engelska.
- Ingår i: Arthritis Research and Therapy. - 1478-6354 .- 1478-6362. ; 26:1
- Tidskriftsartikel (refereegranskat)
Abstract
Ämnesord
Stäng
- Background: Involvement of B cells in the pathogenesis of rheumatoid arthritis (RA) is supported by the presence of disease-specific autoantibodies and the efficacy of treatment directed against B cells. B cells that express low levels of or lack the B cell receptor (BCR) co-receptor CD21, CD21−/low B cells, have been linked to autoimmune diseases, including RA. In this study, we characterized the CD21+ and CD21−/low B cell subsets in newly diagnosed, early RA (eRA) patients and investigated whether any of the B cell subsets were associated with autoantibody status, disease activity and/or joint destruction. Methods: Seventy-six eRA patients and 28 age- and sex-matched healthy donors were recruited. Multiple clinical parameters were assessed, including disease activity and radiographic joint destruction. B cell subsets were analysed in peripheral blood (PB) and synovial fluid (SF) using flow cytometry. Results: Compared to healthy donors, the eRA patients displayed an elevated frequency of naïve CD21+ B cells in PB. Amongst memory B cells, eRA patients had lower frequencies of the CD21+CD27+ subsets and CD21−/low CD27+IgD+ subset. The only B cell subset found to associate with clinical factors was the CD21−/low double-negative (DN, CD27−IgD−) cell population, linked with the joint space narrowing score, i.e. cartilage destruction. Moreover, in SF from patients with established RA, the CD21−/low DN B cells were expanded and these cells expressed receptor activator of the nuclear factor κB ligand (RANKL). Conclusions: Cartilage destruction in eRA patients was associated with an expanded proportion of CD21−/low DN B cells in PB. The subset was also expanded in SF from established RA patients and expressed RANKL. Taken together, our results suggest a role for CD21−/low DN in RA pathogenesis.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Reumatologi och inflammation (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Rheumatology and Autoimmunity (hsv//eng)
Nyckelord
- Cartilage destruction
- CD21 DN B cells −/low
- Early rheumatoid arthritis
- CD21 DN B cells
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- art (ämneskategori)
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