Article (Scientific journals)
The chemical biomarkers C2C, Coll2-1, and Coll2-1NO(2) provide complementary information on type II collagen catabolism in healthy and osteoarthritic mice
Ameye, L. G.; Deberg, Michelle; Oliveira, M. et al.
2007In Arthritis and Rheumatism, 56 (10), p. 3336-3346
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Abstract :
[en] Objective. Compared with wild-type (WT) mice, biglycan/fibromodulin double-deficient mice develop severe knee osteoarthritis. We undertook this study to compare type 11 collagen catabolism in the 2 genotypes and to compare the usefulness of 3 biomarkers of collagen degradation (C2C [also known as Col23/4C(long mono)] as well as the peptide Coll2-1 and its nitrated form, Coll2-1NO(2)) for evaluating collagen catabolism in vivo. Methods. In 15 WT mice and 15 biglycan/ fibromodulin double-deficient mice, we determined serum levels of C2C at ages 66 and 141 days, and we determined serum levels of Coll2-1 and Coll2-1NO(2) at ages 49, 81, 95, and 141 days. Expression of the biomarkers in knee sections was examined using immunohistochemistry. Results. The mean concentrations of C2C and Coll2-1 were higher in biglycan/fibromodulin double-deficient mice at all time points. For C2C and Coll2-1, the ratio of the serum concentration in biglycan/ fibromodulin double-deficient mice to that in WT mice (the double-deficient:WT ratio) was constant over time and was similar to 1.63 and similar to 1.15, respectively. In contrast, the double-deficient:WT ratio for Coll2-1NO(2) varied and, depending on age, was >1 or <1. No significant correlation was found between the expression of the different biomarkers, except for a weak, negative correlation between Coll2-1NO(2) and C2C. In both genotypes, antibodies to each biomarker labeled some fibroblasts in the tendons and menisci as well as chondrocytes above the tidemark in articular cartilage. Growth plates were unstained. For each biomarker, extracellular staining was limited to fibrocartilage areas in the tendons and menisci in all mice and was limited to some focal lesions of the cartilage in biglyean/fibromodulin double-deficient mice. Conclusion. The different double-deficient:WT ratios observed with C2C, Coll2-1, and Coll2-1NO(2) in the absence of any correlation between the expression of the 3 biomarkers indicate that these biomarkers give complementary, rather than redundant, information about in vivo type 11 collagen catabolism.
Disciplines :
Rheumatology
Author, co-author :
Ameye, L. G.
Deberg, Michelle ;  Université de Liège - ULiège > Unité de recherche sur l'os et le cartillage (U.R.O.C.)
Oliveira, M.
Labasse, Alain ;  Centre Hospitalier Universitaire de Liège - CHU > Médecine de l'appareil locomoteur
Aeschlimann, J. M.
Henrotin, Yves  ;  Université de Liège - ULiège > Unité de recherche sur l'os et le cartillage (U.R.O.C.)
Language :
English
Title :
The chemical biomarkers C2C, Coll2-1, and Coll2-1NO(2) provide complementary information on type II collagen catabolism in healthy and osteoarthritic mice
Publication date :
October 2007
Journal title :
Arthritis and Rheumatism
ISSN :
0004-3591
eISSN :
1529-0131
Publisher :
Wiley Liss, Inc., Hoboken, United States - New Jersey
Volume :
56
Issue :
10
Pages :
3336-3346
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 09 November 2010

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