PMID- 15338487 OWN - NLM STAT- MEDLINE DCOM- 20041221 LR - 20161124 IS - 0315-162X (Print) IS - 0315-162X (Linking) VI - 31 IP - 9 DP - 2004 Sep TI - Connective tissue metabolism in patients with unclassified polyarthritis and early rheumatoid arthritis. Relationship to disease activity, bone mineral density, and radiographic outcome. PG - 1698-708 AB - OBJECTIVE: To assess the applicability of serum concentrations of markers of synovial inflammation, cartilage, and bone metabolism in relation to conventional markers of disease activity, bone mineral density (BMD) of the hand, and radiographic outcome. METHODS: Biochemical markers of collagen tissue metabolism were measured in 72 patients with symmetrically swollen and tender second and third metacarpophalangeal or proximal interphalangeal joints for at least 4 weeks and less than 2 years. At 2 years, 51 patients fulfilled the American College Rheumatology criteria for rheumatoid arthritis (RA) and 21 patients had unclassified polyarthritis. Patients with RA were divided into groups according to the mean disease activity and to magnetic resonance imaging and radiographically detected bone erosions in the hands. RESULTS: Patients with RA had significantly higher serum concentrations of matrix metalloproteinase-3 (MMP-3) at baseline and higher mean concentrations of serum MMP-3 and pyridinoline (Pyd) during the first 6 and 12 months than patients with unclassified polyarthritis. RA patients with persistent disease activity and erosive disease had significantly higher concentrations of serum MMP-3 and Pyd than patients with no disease activity or nonerosive disease. Significant mutual correlations between serum MMP-3 and Pyd and C-reactive protein and erythrocyte sedimentation rate were observed. The mean values of MMP-3 and Pyd correlated significantly to the alpha coefficient of the digital x-ray radiogrammetry (DXR-BMD). CONCLUSION: Serum MMP-3 and Pyd varied according to disease activity, periarticular osteoporosis measured by DXR, and radiographic outcome, and thus appear to supplement the conventional markers of disease activity for monitoring patients with RA. FAU - Jensen, Trine AU - Jensen T AD - Department of Rheumatology, H:S Hvidovre Hospital, University of Copenhagen, Hvidovre, Denmark. twj@dadlnet.dk FAU - Klarlund, Mette AU - Klarlund M FAU - Hansen, Michael AU - Hansen M FAU - Jensen, Karl Erik AU - Jensen KE FAU - Skjodt, Henrik AU - Skjodt H FAU - Hyldstrup, Lars AU - Hyldstrup L CN - Danisit TIRA Group LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Canada TA - J Rheumatol JT - The Journal of rheumatology JID - 7501984 RN - 0 (Biomarkers) RN - 0 (Collagen Type I) RN - 0 (Collagen Type II) RN - 0 (Peptide Fragments) RN - 0 (Procollagen) RN - 0 (procollagen Type I N-terminal peptide) RN - EC 3.4.24.- (Collagenases) RN - EC 3.4.24.- (MMP13 protein, human) RN - EC 3.4.24.- (Matrix Metalloproteinase 13) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) RN - EC 3.4.24.7 (Matrix Metalloproteinase 1) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Arthritis, Rheumatoid/*diagnostic imaging/immunology/*metabolism MH - Biomarkers MH - *Bone Density MH - Bone and Bones/immunology/metabolism MH - Cartilage/immunology/metabolism MH - Collagen Type I/metabolism MH - Collagen Type II/metabolism MH - Collagenases/blood MH - Connective Tissue/immunology/*metabolism MH - Female MH - Humans MH - Male MH - Matrix Metalloproteinase 1/blood MH - Matrix Metalloproteinase 13 MH - Matrix Metalloproteinase 3/blood MH - Middle Aged MH - Peptide Fragments/blood MH - Procollagen/blood MH - Radiography MH - Severity of Illness Index MH - Synovial Membrane/immunology/metabolism EDAT- 2004/09/01 05:00 MHDA- 2004/12/22 09:00 CRDT- 2004/09/01 05:00 PHST- 2004/09/01 05:00 [pubmed] PHST- 2004/12/22 09:00 [medline] PHST- 2004/09/01 05:00 [entrez] AID - 0315162X-31-1698 [pii] PST - ppublish SO - J Rheumatol. 2004 Sep;31(9):1698-708.