Title
Biochemical markers of bone turnover and their association with bone marrow lesions
Author
TNO Kwaliteit van Leven
Hunter, D.J.
LaValley, M.
Li, J.
Bauer, D.C.
Nevitt, M.
de Groot, J.
Poole, R.
Eyre, D.
Guermazi, A.
Gale, D.
Totterman, S.
Felson, D.T.
Publication year
2008
Abstract
Introduction: Our objective was to determine whether markers of bone resorption and formation could serve as markers for the presence of bone marrow lesions (BMLs). Methods: We conducted an analysis of data from the Boston Osteoarthritis of the Knee Study (BOKS). Knee magnetic resonance images were scored for BMLs using a semiquantitative grading scheme. In addition, a subset of persons with BMLs underwent quantitative volume measurement of their BML, using a proprietary software method. Within the BOKS population, 80 people with BMLs and 80 without BMLs were selected for the purposes of this case-control study. Bone biomarkers assayed included type I collagen N-telopeptide (NTx) corrected for urinary creatinine, bone-specific alkaline phosphatase, and osteocalcin. The same methods were used and applied to a nested case-control sample from the Framingham study, in which BMD assessments allowed evaluation of this as a covariate. Logistic regression models were fit using BML as the outcome and biomarkers, age, sex, and body mass index as predictors. An receiver operating characteristic curve was generated for each model and the area under the curve assessed. Results: A total of 151 subjects from BOKS with knee OA were assessed. The mean (standard deviation) age was 67 (9) years and 60% were male. Sixty-nine per cent had maximum BML score above 0, and 48% had maximum BML score above 1. The only model that reached statistical significance used maximum score of BML above 0 as the outcome. Ln-NTx (Ln is the natural log) exhibited a significant association with BMLs, with the odds of a BML being present increasing by 1.4-fold (95% confidence interval = 1.0-fold to 2.0-fold) per 1 standard deviation increase in the LnNTx, and with a small partial R2 of 3.05. We also evaluated 144 participants in the Framingham Osteoarthritis Study, whose mean age was 68 years and body mass index was 29 kg/m2, and of whom 40% were male. Of these participants 55% had a maximum BML score above 0. The relationship between NTx and maximum score of BML above 0 revealed a significant association, with an odds ratio fo 1.7 (95% confidence interval = 1.1 to 2.7) after adjusting for age, sex, and body mass index. Conclusions: Serum NTx was weakly associated with the presence of BMLs in both study samples. This relationship was not strong and we would not advocate the use of NTx as a marker of the presence of BMLs. © 2008 Hunter et al.; licensee BioMed Central Ltd. Chemicals / CAS: alkaline phosphatase, 9001-78-9; creatinine, 19230-81-0, 60-27-5; osteocalcin, 136461-80-8; Alkaline Phosphatase, EC 3.1.3.1; Biological Markers; collagen type I trimeric cross-linked peptide; Collagen Type I; Osteocalcin, 104982-03-8; Peptides
Subject
Aged
Aged, 80 and over
Alkaline Phosphatase
Biological Markers
Bone and Bones
Bone Density
Bone Marrow Diseases
Bone Resorption
Case-Control Studies
Collagen Type I
Cross-Sectional Studies
Female
Humans
Logistic Models
Male
Middle Aged
Osteoarthritis, Knee
Osteocalcin
Osteogenesis
Peptides
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DOI
https://doi.org/10.1186/ar2494
TNO identifier
240966
ISSN
1478-6354
Source
Arthritis Research and Therapy, 10 (10)
Document type
article