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Title: | Association of markers of bone- and cartilage-degradation with radiological changes at baseline and after 2 years follow-up in patients with ankylosing spondylitis | Authors: | Vosse, D. Landewe, R. Garnero, P. VAN DER HEIJDE, Desiree van der Linden, S GEUSENS, Piet |
Issue Date: | 2008 | Publisher: | OXFORD UNIV PRESS | Source: | RHEUMATOLOGY, 47(8). p. 1219-1222 | Abstract: | Objective. There is a lack of knowledge on factors that reliably can predict radiological changes in patients with AS. We have investigated whether urinary C-terminal cross-linking telopeptide of type I (CTX-I) and type II (CTX-II) collagen, as specific biochemical markers of bone and cartilage degradation, respectively, are associated with radiological damage and progression, and with BMD in patients with AS. Methods. Eighty-three patients with AS [mean (s.d.) age: 50.4 (12) yrs, 65 male, mean (s.d.) disease duration after diagnosis: 16.7 (10) yrs] who participate in an ongoing cohort study of patients with AS [Outcome in AS International Study (OASIS) cohort] were assessed for urinary CTX-I and -II. Results of both biochemical markers were compared with baseline scores for radiological damage (modified modified Stoke Ankylosing Spondylitis Spine Score, primarily reflecting syndesmophyte-formation and -growth), and with scores for radiological progression after 2 yrs follow-up. Markers were also associated with disease activity parameters and BMD. Results. Mean duration of complaints was 28.6 yrs. At that time, 54% of patients had signs of radiological damage, and 35% of them showed radiological progression after 2 yrs. Baseline radiological damage (rho = 0.24; P <= 0.05) correlated with CTX-II, but not with CTX-I. CTX-II correlated with serological markers of inflammation (ESR rho = 0.29 and CRP rho = 0.30; P <= 0.01), but not with baseline BASDAI or BMD. There was a negative correlation between CTX-I and BMD of the trochanter (rho =-0.31; P <= 0.01) In multivariate analyses, CTX-II significantly and independently contributed to explaining variation in radiological damage (standardized beta = 0.27; P = 0.03) and progression (standardized beta = 0.27; P = 0.05). Conclusion. In AS, cartilage degradation plays a role in explaining radiological-damage and - progression in the spine. | Notes: | Univ Hosp Maastricht, Div Rheumatol, Dept Internal Med, NL-6202 AZ Maastricht, Netherlands. Univ Maastricht, CAPHRI Res Inst, Maastricht, Netherlands. INSERM, Res Unit 664, F-69008 Lyon, France. Synarc, Mol Markers, Lyon, France. Leiden Univ, Med Ctr, Dept Rheumatol, Leiden, Netherlands. Univ Hasselt, Biomed Res Inst, Hasselt, Belgium. | Keywords: | ankylosing spondylitis; biochemical markers; bone degradation; cartilage degradation; radiological damage; radiological progression | Document URI: | http://hdl.handle.net/1942/8443 | ISSN: | 1462-0324 | e-ISSN: | 1462-0332 | DOI: | 10.1093/rheumatology/ken148 | ISI #: | 000257787200020 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2009 |
Appears in Collections: | Research publications |
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