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Uncoupling of collagen II metabolism in newly diagnosed, untreated rheumatoid arthritis is linked to inflammation and antibodies against cyclic citrullinated peptides

Anne Friesgaard Christensen, Kim Hørslev-Petersen, Stephan Christgau, Hanne Merete Lindegaard, Tine Lottenburger, Kirsten Junker, Merete Lund Hetland, Kristian Stengaard-Pedersen, Søren Jacobsen, Torkell Ellingsen, Lis Smedegaard Andersen, Ib Hansen, Henrik Skjødt, Jens Kristian Pedersen, Ulrik Birk Lauridsen, Anders Jørgen Svendsen, Ulrik Tarp, Jan Pødenphanth, Niels H H Heegaard, Aage VestergaardAnne Grethe Jurik, Mikkel Østergaard, Peter Junker

15 Citations (Scopus)

Abstract

Objective. To investigate the relationship between markers of collagen 11 synthesis and degradation with disease activity measures, autoantibodies, and radiographic outcomes in a 4-year protocol on patients with early rheumatoid arthritis (RA) who are naive to disease-modifying antirheumatic drugs. Methods. One hundred sixty patients with newly diagnosed, untreated RA entered the Cyclosporine, Methotrexate, Steroid in RA (CIMESTRA) trial. Disease activity and radiograph status were measured at baseline and 4 years. The N-terminal propeptide of collagen IIA (PIIANP) and the crosslinked C-telopeptide of collagen II (CTX-II) were quantified at baseline by ELISA. PIIANP was also assayed at 2 and 4 years. Anticyclic citrullinated peptide (anti-CCP) was recorded at baseline. An uncoupling index for cartilage collagen metabolism was calculated from PHANP and CTX-II measurements. Results. PIIANP was low at diagnosis and 4 years on (p
Original languageEnglish
JournalJournal of Rheumatology
Volume37
Issue number6
Pages (from-to)1113-20
Number of pages8
ISSN0315-162X
DOIs
Publication statusPublished - 2010

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