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Ahner CE, Stoker AM, Bozynski CC, Cook CR, Leary EV, Kuroki K, Cruz CN, Cook JL. Protein biomarkers in serum and urine for determining presence or absence of hip dysplasia in a canine model. J Orthop Res 2019; 37:916-920. [PMID: 30720210 DOI: 10.1002/jor.24242] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 01/25/2019] [Indexed: 02/04/2023]
Abstract
This study compares serum and urine concentrations of relevant protein biomarkers among adult dogs with or without radiographic canine hip dysplasia (CHD). Adult (≥2 years of age), client-owned dogs (n = 74) radiographically categorized as having at least "good" hips (n = 49) or having "mild," "moderate," or "severe" hip dysplasia (n = 25) by the Orthopedic Foundation for Animals (OFA). Urine and serum samples were obtained from each dog at a single time-point and processed and analyzed for relevant protein biomarkers. Urinary concentrations of CTX-II (p < 0.001) and TIMP-1 (p = 0.002) were significantly lower in dogs with CHD compared to dogs with no CHD. ROC curve analyses were successful in establishing a panel of four biomarkers (urinary CTX-I and II, serum MMP-9, and serum PIICP) with high discriminatory capability for the presence or absence of hip dysplasia in adult dogs (AUC = 0.89). Urine and serum biomarkers can distinguish adult dogs with radiographic CHD from those with no CHD with a sensitivity of 0.95 and specificity of 0.77 using ROC analysis with AUC 0.89. Clinical Significance: This finding suggests that this simple, minimally invasive diagnostic technique has potential for discriminating dysplastic dogs from dogs with normal hips, with possible translational application to humans based on similar etiopathogenesis. © 2019 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 9999:1-5, 2019.
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Affiliation(s)
- Carin E Ahner
- Thompson Laboratory for Regenerative Orthopaedics, University of Missouri, Columbia, Missouri.,Division of Laboratory Animal Resources, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Aaron M Stoker
- Thompson Laboratory for Regenerative Orthopaedics, University of Missouri, Columbia, Missouri
| | - Chantelle C Bozynski
- Thompson Laboratory for Regenerative Orthopaedics, University of Missouri, Columbia, Missouri
| | - Cristi R Cook
- Thompson Laboratory for Regenerative Orthopaedics, University of Missouri, Columbia, Missouri
| | - Emily V Leary
- Thompson Laboratory for Regenerative Orthopaedics, University of Missouri, Columbia, Missouri.,Department of Orthopaedic Surgery, University of Missouri, 1100 Virginia Ave., Columbia, Missouri, 65212
| | - Keiichi Kuroki
- Thompson Laboratory for Regenerative Orthopaedics, University of Missouri, Columbia, Missouri
| | - Carissa N Cruz
- College of Veterinary Medicine and Surgery, University of Missouri, Columbia, Missouri.,Villa Park Animal Clinic, Los Angeles, California
| | - James L Cook
- Thompson Laboratory for Regenerative Orthopaedics, University of Missouri, Columbia, Missouri.,Department of Orthopaedic Surgery, University of Missouri, 1100 Virginia Ave., Columbia, Missouri, 65212
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Sharma S, Lee A, Choi K, Kim K, Youn I, Trippel SB, Panitch A. Biomimetic aggrecan reduces cartilage extracellular matrix from degradation and lowers catabolic activity in ex vivo and in vivo models. Macromol Biosci 2013; 13:1228-37. [PMID: 23836445 DOI: 10.1002/mabi.201300112] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Revised: 04/17/2013] [Indexed: 11/07/2022]
Abstract
Aggrecan, a major macromolecule in cartilage, protects the extracellular matrix (ECM) from degradation during the progression of osteoarthritis (OA). However, aggrecan itself is also susceptible to proteolytic cleavage. Here, the use of a biomimetic proteoglycan (mAGC) is presented, which functionally mimics aggrecan but lacks the known cleavage sites, protecting the molecule from proteolytic degradation. The objective of this study is to test the efficacy of this molecule in ex vivo (human OA synovial fluid) and in vivo (Sprague-Dawley rats) osteoarthritic models. These results indicate that mAGC's may protect articular cartilage against the loss of key ECM components, and lower catabolic protein and gene expression in both models. This suppression of matrix degradation has the potential to provide a healthy environment for tissue repair.
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Affiliation(s)
- Shaili Sharma
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, 47907
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