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A novel target for treatment of inflammatory joint diseases
Umeå universitet. Lipum AB, Umeå, Sweden.
Umeå universitet.
Umeå universitet.
Umeå universitet.ORCID-id: 0000-0001-8259-3863
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2019 (Engelska)Ingår i: Annals of the Rheumatic Diseases, ISSN 0003-4967, E-ISSN 1468-2060, Vol. 78, s. 1525-1526Artikel i tidskrift, Meeting abstract (Övrigt vetenskapligt) Published
Abstract [en]

Background: The bile salt-stimulated lipase (BSSL) is a hitherto unrecognized player in inflammation. Animals devoid of BSSL (knockout mice) are protected from developing collagen induced arthritis (CIA) and collagen antibody induced arthritis (CAIA), and antibodies directed towards BSSL has been proven to prevent or mitigate arthritis in mouse and rat arthritis models1. In humans, BSSL is present in blood2 and accumulate at sites of inflammation. Patients with acute pancreatitis have significantly increased plasma BSSL levels compared to healthy controls. Whether BSSL in blood originates from pancreas, inflammatory cells, or both remains to be elucidated.

Objectives: To determine BSSL concentration in blood samples from patients with inflammatory joint disorders and to evaluate possible relationships between circulating BSSL levels and disease-activity variables.

Methods: BSSL concentrations in plasma or serum were determined in patients with rheumatoid arthritis (RA), psoriasis arthritis (PsA), and juvenile idiopathic arthritis (JIA) by a sandwich enzyme-linked immunosorbent assay (ELISA). Correlations between BSSL concentrations and disease activity score, erythrocyte sedimentation rate (ESR), blood levels of C-reactive protein (CRP), S100A8/9, leukocyte- and neutrophil counts, proinflammatory cytokines and chemokines were analyzed using Spearman rank-order correlation.

Results: Significant correlations between BSSL concentration in plasma and disease activity score (DAS28, rS=0.31, p=0.007), ESR (rS=0.58, p<0.000), CRP (rS=0.42, p=0.012), leukocytes (rS=0.66, p<0.000), and neutrophils (rS=0.71, p<0.000) were found in RA. The BSSL plasma concentration decreased with duration of treatment with the TNFα inhibitor infliximab, in parallel with decreasing DAS28 score.

BSSL concentration was significantly higher in sera from PsA patients with both oligo- and polyarthritis compared with healthy controls. Moreover, BSSL concentration in serum correlated significantly with S100A8/A9 and CRP concentrations (rS=0.54, p<0.001 and rS=0.49, p<0.001, respectively). No correlation between levels of BSSL and cytokines or chemokines were found in RA or PsA plasma or serum, respectively.

In JIA, levels of BSSL in serum correlated significantly with JIA disease activity score (JADAS27) (rS=0.26, p=0.007), ESR (rS=0.47, p<0.000), and leukocytes (rS=0.32, p<0.000).

Conclusion: BSSL concentration in serum and plasma correlated with disease activity in patients with inflammatory joint disorders, i.e. RA, PsA and JIA. These data in humans support the relevance of our previous studies in rodents and therefore also our hypothesis 1 that BSSL is a novel target for treatment of inflammatory diseases.

Ort, förlag, år, upplaga, sidor
BMJ Publishing Group Ltd, 2019. Vol. 78, s. 1525-1526
Nationell ämneskategori
Reumatologi och inflammation
Identifikatorer
URN: urn:nbn:se:umu:diva-161720DOI: 10.1136/annrheumdis-2019-eular.2165ISI: 000472207104460OAI: oai:DiVA.org:umu-161720DiVA, id: diva2:1339218
Konferens
Annual European Congress of Rheumatology (EULAR), Madrid, Spain, June 12-15, 2019
Tillgänglig från: 2019-07-26 Skapad: 2019-07-26 Senast uppdaterad: 2019-07-26Bibliografiskt granskad

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Lindquist, SusanneAlenius, Gerd-MarieRantapää-Dahlqvist, SolbrittWang, YuhangHernell, Olle

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Lindquist, SusanneAlenius, Gerd-MarieRantapää-Dahlqvist, SolbrittWang, YuhangHernell, Olle
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Umeå universitet
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Annals of the Rheumatic Diseases
Reumatologi och inflammation

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