Analysis of cartilage biomarkers in the early phases of canine experimental osteoarthritis
| Autor: | David R. Eyre, A. Robin Poole, John R. Matyas, Lynne M. Atley, Mirela Ionescu |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Cartilage
Articular Lumican Pathology medicine.medical_specialty Keratan sulfate Immunology Type II collagen Stifle joint Cartilage metabolism Osteoarthritis Epitopes chemistry.chemical_compound Dogs Rheumatology Synovial Fluid medicine Animals Immunology and Allergy Lectins C-Type Pharmacology (medical) Aggrecans Anterior Cruciate Ligament Collagen Type II Aggrecan Extracellular Matrix Proteins business.industry Cartilage Calcium-Binding Proteins medicine.disease Stifle Disease Models Animal medicine.anatomical_structure Chondroitin Sulfate Proteoglycans chemistry Keratan Sulfate Female Proteoglycans Collagen business Biomarkers |
| Zdroj: | Arthritis & Rheumatism. 50:543-552 |
| ISSN: | 1529-0131 0004-3591 |
| DOI: | 10.1002/art.20027 |
| Popis: | Objective To study 3 body fluids for changes in the levels of 5 biomarkers of cartilage metabolism during the early phases of experimental osteoarthritis (OA). Methods Twenty skeletally mature mixed-breed canines underwent unilateral surgical transection of the anterior cruciate ligament. Samples of joint fluid, serum, and urine were obtained preoperatively and just before necropsy (3 weeks or 12 weeks postoperatively). Biomarkers included 2 markers of cartilage matrix synthesis/turnover (aggrecan 846 epitope and C-propeptide of type II collagen) and 3 markers of cartilage degradation (keratan sulfate proteoglycan epitope, the collagenase-generated cleavage epitope of type II collagen [Col2-3/4Clong mono, or CIIC], and crosslinked peptides from the C-telopeptide domain of type II collagen [Col2CTx]). Significant changes in the levels of these biomarkers were determined by paired analyses. Results Joint pathology was more severe in the 12-week group compared with the 3-week group. In joint fluid, due to limited volume, only Col2-3/4Clong mono and Col2CTx were measured. Significant elevations in the levels of both of these markers were observed in experimental joints in both the 3-week group and the 12-week group. In serum, the level of aggrecan 846 epitope was elevated at both 3 weeks and 12 weeks, the level of Col2-3/4Clong mono was elevated at 12 weeks, and the level of Col2CTx was elevated at both 3 weeks and 12 weeks. In urine, the level of Col2-3/4Clong mono was elevated at 12 weeks after surgery. Conclusion Levels of biomarkers of intact aggrecan proteoglycan (aggrecan 846 epitope) and type II collagen degradation (Col2-3/4Clong mono and Col2CTx) were elevated early after unilateral stifle joint injury, suggesting that these markers are sensitive and specific for early cartilage changes associated with isolated joint injury in this established model of experimental OA. |
| Databáze: | OpenAIRE |
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