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Tomé I, Alves-Pimenta S, Sargo R, Pereira J, Colaço B, Brancal H, Costa L, Ginja M. Mechanical osteoarthritis of the hip in a one medicine concept: a narrative review. BMC Vet Res 2023; 19:222. [PMID: 37875898 PMCID: PMC10599070 DOI: 10.1186/s12917-023-03777-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 10/06/2023] [Indexed: 10/26/2023] Open
Abstract
Human and veterinary medicine have historically presented many medical areas of potential synergy and convergence. Mechanical osteoarthritis (MOA) is characterized by a gradual complex imbalance between cartilage production, loss, and derangement. Any joint instability that results in an abnormal overload of the joint surface can trigger MOA. As MOA has a prevailing mechanical aetiology, treatment effectiveness can only be accomplished if altered joint mechanics and mechanosensitive pathways are normalized and restored. Otherwise, the inflammatory cascade of osteoarthritis will be initiated, and the changes may become irreversible. The management of the disease using non-steroidal anti-inflammatory drugs, analgesics, physical therapy, diet changes, or nutraceuticals is conservative and less effective. MOA is a determinant factor for the development of hip dysplasia in both humans and dogs. Hip dysplasia is a hereditary disease with a high incidence and, therefore, of great clinical importance due to the associated discomfort and significant functional limitations. Furthermore, on account of analogous human and canine hip dysplasia disease and under the One Medicine concept, unifying veterinary and human research could improve the well-being and health of both species, increasing the acknowledgement of shared diseases. Great success has been accomplished in humans regarding preventive conservative management of hip dysplasia and following One Medicine concept, similar measures would benefit dogs. Moreover, animal models have long been used to better understand the different diseases' mechanisms. Current research in animal models was addressed and the role of rabbit models in pathophysiologic studies and of the dog as a spontaneous animal model were highlighted, denoting the inexistence of rabbit functional models to investigate therapeutic approaches in hip MOA.
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Affiliation(s)
- I Tomé
- Department of Veterinary Sciences, University of Trás-Os-Montes E Alto Douro, Vila Real, 5000-801, Portugal.
- CECAV, Centre for Animal Sciences and Veterinary Studies, Associate Laboratory for Animal and Veterinary Science - AL4AnimalS, University of Trás-Os-Montes E Alto Douro, Vila Real, Portugal.
| | - S Alves-Pimenta
- CECAV, Centre for Animal Sciences and Veterinary Studies, Associate Laboratory for Animal and Veterinary Science - AL4AnimalS, University of Trás-Os-Montes E Alto Douro, Vila Real, Portugal
- Department of Animal Science, University of Trás-Os-Montes E Alto Douro, Vila Real, Portugal
| | - R Sargo
- Department of Veterinary Sciences, University of Trás-Os-Montes E Alto Douro, Vila Real, 5000-801, Portugal
- CECAV, Centre for Animal Sciences and Veterinary Studies, Associate Laboratory for Animal and Veterinary Science - AL4AnimalS, University of Trás-Os-Montes E Alto Douro, Vila Real, Portugal
| | - J Pereira
- Department of Veterinary Sciences, University of Trás-Os-Montes E Alto Douro, Vila Real, 5000-801, Portugal
- CECAV, Centre for Animal Sciences and Veterinary Studies, Associate Laboratory for Animal and Veterinary Science - AL4AnimalS, University of Trás-Os-Montes E Alto Douro, Vila Real, Portugal
| | - B Colaço
- CECAV, Centre for Animal Sciences and Veterinary Studies, Associate Laboratory for Animal and Veterinary Science - AL4AnimalS, University of Trás-Os-Montes E Alto Douro, Vila Real, Portugal
- Department of Animal Science, University of Trás-Os-Montes E Alto Douro, Vila Real, Portugal
| | - H Brancal
- Clínica Veterinária da Covilhã, Covilhã, 6200-289, Portugal
| | - L Costa
- Department of Veterinary Sciences, University of Trás-Os-Montes E Alto Douro, Vila Real, 5000-801, Portugal
- CECAV, Centre for Animal Sciences and Veterinary Studies, Associate Laboratory for Animal and Veterinary Science - AL4AnimalS, University of Trás-Os-Montes E Alto Douro, Vila Real, Portugal
| | - M Ginja
- Department of Veterinary Sciences, University of Trás-Os-Montes E Alto Douro, Vila Real, 5000-801, Portugal
- CECAV, Centre for Animal Sciences and Veterinary Studies, Associate Laboratory for Animal and Veterinary Science - AL4AnimalS, University of Trás-Os-Montes E Alto Douro, Vila Real, Portugal
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Wang X, Zhao X, Tang S. Inhibitory effects of EGb761 on the expression of matrix metalloproteinases (MMPs) and cartilage matrix destruction. Cell Stress Chaperones 2015; 20:781-6. [PMID: 26045200 PMCID: PMC4529858 DOI: 10.1007/s12192-015-0600-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Revised: 03/09/2015] [Accepted: 03/11/2015] [Indexed: 10/23/2022] Open
Abstract
Cytokines such as tumor necrosis factor alpha (TNF-α)-induced expression of matrix metalloproteinase (MMP) play a pivotal role in the destruction of articular cartilage in patients who are suffering from osteoarthritis (OA). Collagen type II, the basis for articular cartilage, can be degraded by MMP-1, MMP-3, and 13. EGb761, the standardized extract of Ginkgo biloba produced by Dr. Willar Schwabe Pharmaceuticals, has shown its anti-inflammatory capacity. This study aimed to determine a mechanism whereby EGb761 may inhibit cartilage degradation. Our results indicated that pretreatment with EGb761 abolishes MMP-1, MMP-3, and MMP-13 gene expression and protein expression induced by TNF-α in human chondrocyte monolayer. In addition, the reduction of the tissue inhibitor of metalloproteinase-1(TIMP-1) and metalloproteinase-2 gene expression induced by TNF-α was rescued by pretreatment with EGb761. Importantly, TNF-α-induced degradation of collagen type II was ameliorated by EGb761 in a dose-dependent manner. Mechanistically, our results indicated that EGb761 treatment attenuated TNF-α-induced NF-κB activation. These actions of EGb761 suggest a mechanism by which EGb761 may act to prevent cartilage breakdown in arthritis.
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Affiliation(s)
- Xuewen Wang
- />Department of Joint Surgery, Weifang Medical University, Weifang, China
| | - Xingshen Zhao
- />Imaging Center, Affiliated Hospital of Weifang Medical University, Weifang City, China
| | - Shusen Tang
- />Department of Joint Surgery, Affiliated Hospital of Weifang Medical University, No. 2428, Yuhe Road, Weifang City, 261031 Shandong Province China
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Sherwood JC, Bertrand J, Eldridge SE, Dell'Accio F. Cellular and molecular mechanisms of cartilage damage and repair. Drug Discov Today 2014; 19:1172-7. [PMID: 24880104 DOI: 10.1016/j.drudis.2014.05.014] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Accepted: 05/20/2014] [Indexed: 01/18/2023]
Abstract
Cartilage breakdown is the disabling outcome of rheumatic diseases, whether prevalently inflammatory such as rheumatoid arthritis or prevalently mechanical such as osteoarthritis (OA). Despite the differences between immune-mediated arthritides and OA, common mechanisms drive cartilage breakdown. Inflammation, chondrocyte phenotype and homeostatic mechanisms have recently been the focus of research and will be summarised in this review.
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Affiliation(s)
- Joanna C Sherwood
- Barts and The London, Queen Mary University of London School of Medicine and Dentistry, William Harvey Research Institute, London, UK
| | - Jessica Bertrand
- Barts and The London, Queen Mary University of London School of Medicine and Dentistry, William Harvey Research Institute, London, UK
| | - Suzanne E Eldridge
- Barts and The London, Queen Mary University of London School of Medicine and Dentistry, William Harvey Research Institute, London, UK
| | - Francesco Dell'Accio
- Barts and The London, Queen Mary University of London School of Medicine and Dentistry, William Harvey Research Institute, London, UK.
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Forterre S, Zurbriggen A, Spreng D. In vitro effect of different mediators of apoptosis on canine cranial and caudal cruciate ligament fibroblasts and its reversibility by pancaspase inhibitor zVAD.fmk. Vet Immunol Immunopathol 2011; 139:264-70. [DOI: 10.1016/j.vetimm.2010.09.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2010] [Revised: 09/06/2010] [Accepted: 09/28/2010] [Indexed: 12/26/2022]
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Doom M, de Bruin T, de Rooster H, van Bree H, Cox E. Immunopathological mechanisms in dogs with rupture of the cranial cruciate ligament. Vet Immunol Immunopathol 2008; 125:143-61. [DOI: 10.1016/j.vetimm.2008.05.023] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2007] [Revised: 05/06/2008] [Accepted: 05/19/2008] [Indexed: 01/24/2023]
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Shinoda C, Takaku S. Oral and Maxillofacial Pathology: Interleukin-1 β, interleukin-6, and tissue inhibitor of metalloproteinase-1 in the synovial fluid of the temporomandibular joint with respect to cartilage destruction. Oral Dis 2008; 6:383-90. [PMID: 11355271 DOI: 10.1111/j.1601-0825.2000.tb00131.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVE The distribution and biological roles of interleukin (IL)-1 beta, IL-6, and tissue inhibitor of metalloproteinase-1 (TIMP-1) in the synovial fluid of patients with non-inflammatory chronic temporomandibular joint (TMJ) disorders were evaluated in relation to pain upon joint movements and X-ray and magnetic resonance imaging (MRI) findings. MATERIALS AND METHODS TMJ aspirates were obtained from 48 patients (48 joints) with chronic TMJ disorders and from 18 controls (18 joints). The IL-1 beta and IL-6 levels in the aspirates were determined by using an enzyme-linked immunosorbent assay and the TIMP-1 level was measured by an enzyme immunoassay. Following examinations for pain upon joint movements and X-ray and MRI observations, the IL-1 beta, IL-6, and TIMP-1 levels and frequencies of their detection were compared. RESULTS The IL-1 beta level and frequency of detection showed no correlation with pain upon joint movements or with the X-ray and MRI findings. In the frequency of detection of IL-6, there were significant differences between control (no detection) and all chronic TMJ disorder groups that were classified by imaging diagnosis (P < 0.001). A correlation was also noted between the presence of IL-6 and pain upon joint movements. The IL-6 level was correlated with the TIMP-1 level and with pain upon joint movements. TIMP-1 level was correlated with pain upon joint movements. The TIMP-1 was present in higher level from patients with chronic TMJ disorders who exhibited osseous changes on the X-ray images. CONCLUSION The results indicated that the IL-6 and TIMP-1 levels in the TMJ aspirates of patients with chronic TMJ disorders have been raised. The former was not detected in the TMJ aspirates of the control. These findings suggest that IL-6 and TIMP-1 might play a role in the etiology of chronic TMJ disorders, but further studies are needed to validate this.
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Affiliation(s)
- C Shinoda
- Department of Oral and Maxillofacial Surgery, Saitama Medical School, Morohongo 38, Moroyama Irumagun, Saitama 350-0495, Japan
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de Bruin T, de Rooster H, van Bree H, Duchateau L, Cox E. Cytokine mRNA expression in synovial fluid of affected and contralateral stifle joints and the left shoulder joint in dogs with unilateral disease of the stifle joint. Am J Vet Res 2007; 68:953-61. [PMID: 17764409 DOI: 10.2460/ajvr.68.9.953] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To examine mRNA expression of cytokines in synovial fluid (SF) cells from dogs with cranial cruciate ligament (CrCL) rupture and medial patellar luxation (MPL) and determine mRNA expression for 3 joints (affected stifle, unaffected contralateral stifle, and left shoulder joints) in dogs with unilateral CrCL rupture. SAMPLE POPULATION 29 stifle joints with CrCL rupture (29 dogs), 8 stifle joints with MPL (7 dogs), and 24 normal stifle joints (16 clinically normal dogs). PROCEDURES Immediately before reconstructive surgery, SF was aspirated from the cruciate-deficient stifle joint or stifle joint with MPL. Fourteen of 29 dogs had unilateral CrCL rupture; SF was also aspirated from the unaffected contralateral stifle joint and left shoulder joint. Those 14 dogs were examined 6 and 12 months after reconstructive surgery. Total RNA was extracted from SF cells and reverse transcription-PCR assay was performed to obtain cDNA. Canine-specific cytokine mRNA expression was determined by use of a real-time PCR assay. RESULTS Interleukin (IL)-8 and -10 and interferon-gamma expression differed significantly between dogs with arthropathies and dogs with normal stifle joints. For the 14 dogs with unilateral CrCL rupture, a significant difference was found for IL-8 expression. Before reconstructive surgery, IL-8 expression differed significantly between the affected stifle joint and left shoulder joint or contralateral stifle joint. Six months after surgery, IL-8 expression was significantly increased in the unaffected contralateral stifle joint, compared with the shoulder joint. CONCLUSIONS AND CLINICAL RELEVANCE No conclusions can be made regarding the role of the examined cytokines in initiation of CrCL disease.
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Affiliation(s)
- Tanya de Bruin
- Department of Diagnostic Imaging of Domestic Animals, Faculty of Veterinary Medicine, University of Ghent, Salisburylaan 133, 9820 Merelbeke, Belgium
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Higuchi H, Shirakura K, Kimura M, Terauchi M, Shinozaki T, Watanabe H, Takagishi K. Changes in biochemical parameters after anterior cruciate ligament injury. INTERNATIONAL ORTHOPAEDICS 2005; 30:43-7. [PMID: 16333657 PMCID: PMC2254663 DOI: 10.1007/s00264-005-0023-5] [Citation(s) in RCA: 92] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2005] [Accepted: 08/21/2005] [Indexed: 11/30/2022]
Abstract
We studied the biochemical characteristics of human knees with deficient anterior cruciate ligaments (ACL) and analysed their relationship to the time after ligamentous injury. Thirty-two patients with isolated ACL-injured knees and six healthy volunteers were enrolled. Synovial fluid samples were centrifuged after aspiration during arthroscopic examination, and aliquots of supernatant were frozen and stored at -80 degrees C. The samples were analysed for interleukin (IL)-1beta, tumour necrosis factor (TNF)-alpha, IL-6, matrix metalloproteinase (MMP)-3, and tissue inhibitor of metalloproteinase (TIMP)-1 using commercially available sandwich enzyme-linked immunosorbent assay. In fluid from ACL-injured knees, the average concentrations of IL-6, MMP-3 and TIMP-1 were highly elevated in comparison with normal controls. There was a statistically significant correlation between the concentrations of MMP-3 and IL-6. The IL-6 and TIMP-1 concentrations were interrelated. The concentration of MMP-3 remained high, independent of the duration since the injury, whereas the TIMP-1 and IL-6 levels decreased. The results suggest that the timing of the treatment of an ACL-injured knee might be of importance.
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Affiliation(s)
- H Higuchi
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi-shi, Gunma-ken, 371-8511, Japan.
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Kim JH, Ryu KH, Jung KW, Han CK, Kwak WJ, Cho YB. SKI306X suppresses cartilage destruction and inhibits the production of matrix metalloproteinase in rabbit joint cartilage explant culture. J Pharmacol Sci 2005; 98:298-306. [PMID: 16034188 DOI: 10.1254/jphs.fpj04058x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
SKI306X was previously found to have cartilage protective effects in the experimental osteoarthritis (OA) model. To investigate the chondro-protective benefits of SKI306X for its capacity in altering changes in cartilage metabolism and molecular mechanisms of cartilage protective action, SKI306X is studied in rabbit cartilage explants culture. To investigate the protective effect of SKI306X on cartilage catabolism, we assessed collagen degradation in rabbit cartilage explants treated with interleukin-1alpha up to 3 weeks. To examine the reaction mechanism, matrix metalloproteinase (MMPs) were investigated by fluorimetric and Western blotting analysis. In addition, its effects on the activation process of proenzyme MMP-3 were determined by gelatin zymography. SKI306X significantly inhibited collagen degradation and inhibited the activities of several MMPs. Total MMPs activities in cultured medium were substantially increased in the third week at the time of collagen degradation with the absence of SKI306. However, the introduction of SKI306X decreased MMPs activities in cultured medium. Furthermore, Western blotting analysis proved that these inhibitory effects of this drug were the result of inhibiting MMPs expression. SKI306X also inhibited the activation of proenzyme MMP-3 to the active form of MMP-3. These results indicate that SKI306X inhibits matrix degradation by down regulating MMPs expression and secretion, inhibition of MMPs activity, and inhibiting activation of MMP-3 during the collagen breakdown process.
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Affiliation(s)
- Joo-Hyon Kim
- Life Science Research Center, SK Chemicals, Kyugki-Do, South Korea
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Livshits G. Genetic epidemiology of skeletal system aging in apparently healthy human population. Mech Ageing Dev 2005; 126:269-79. [PMID: 15621207 DOI: 10.1016/j.mad.2004.08.020] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The study of our team was driven by a clinical problem of age-dependent chronic degenerative disease of skeleton that includes osteoporosis (OP) and osteoarthritis (OA)-related phenotypes. The major aims of the study included evaluation of the putative genetic factors determining the rate and pattern of the bone and cartilage loss and identification of the specific genes involved in this process. In addition, we examined genetic effects on circulating molecular factors involved in bone and cartilage metabolism. The skeletal phenotypes were assessed from hand radiographs, in total on about 1200 individuals belonging to ethnically homogeneous nuclear and complex three-generational pedigrees of European origin. The results obtained until now can be divided into three sections: (1) genetic analysis of bone mass/size/geometry characteristics (OP) and traits related to hand OA; (2) pedigree-based investigation of circulating levels of calciotropic hormones, growth factors, cytokines, and biochemical indices of bone and cartilage remodelling; (3) linkage and linkage disequilibrium study of several candidate genes, such as estrogen receptor alpha, collagen type I alpha 1, genes related to extracellular inorganic pyrophosphate transport and OP/OA phenotypes, including biochemical variables. The study provides compelling evidence to suggest strong involvement of the genetic factors in determination of variation of the majority of the examined OP- and OA-related phenotypes.
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Affiliation(s)
- Gregory Livshits
- Department of Anatomy and Anthropology, Human Population Biology Research Unit, Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv, 69978 Tel Aviv, Israel.
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Kim CH, Lee BJ, Yoon J, Seo KM, Park JH, Lee JW, Cho ES, Hong JJ, Lee YS, Park JH. Therapeutic effect of hyaluronic acid on experimental osteoarthrosis of ovine temporomandibular joint. J Vet Med Sci 2001; 63:1083-9. [PMID: 11714023 DOI: 10.1292/jvms.63.1083] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A symptomatic relief by hyaluronic acid (HA, MW: 3.5 x 10(6)), which is synthesized by Streptococcus spp, was investigated in experimental ovine osteoarthrosis. Bilateral osteoarthrosis (OA) of the temporo-mandibular joints (TMJs) was induced by perforating discs and by scrapping subchondral condylar surface. HA was intra-articularly injected into the left joints of 6 sheep on 7, 10, 14, 17 and 21 days after the operation and physiological saline as the control was injected into the contralateral (right) joints on the same day. Three sheep were killed at I month post-operation (MPO) and the remaining three sheep were killed at 3 MPO. Various responses such as proliferation of fibrous tissue, denudation, erosion, osteophyte formation, subcortical cyst formation and ankylosis were observed radiographically and histopathologically. The treatment of HA ameliorated the degenerative changes and lowered the osteoarthrotic score in the left joints at I MPO (9.96 vs 5.81) and 3 MPO (10.86 vs 5.29) compared to the right joints. These results indicate that a repeated intra-articular injection of HA inhibits the progression of OA in ovine TMJs by inducing the development of articular cartilage and by reducing the proliferation of fibrotic tissue.
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Affiliation(s)
- C H Kim
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Seoul National University, Suwon, Korea
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Chevalier X, Conrozier T, Gehrmann M, Claudepierre P, Mathieu P, Unger S, Vignon E. Tissue inhibitor of metalloprotease-1 (TIMP-1) serum level may predict progression of hip osteoarthritis. Osteoarthritis Cartilage 2001; 9:300-7. [PMID: 11399093 DOI: 10.1053/joca.2000.0389] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To determine the predictive value of serum levels of TIMP-1 and hyaluronic acid in a 1 year prospective study in hip osteoarthritis (OA). METHODS Twenty-nine patients with OA of the hip were enrolled in a 1-year prospective study (median follow-up, 13 months). Biochemical analysis was used to assess TIMP-1 and hyaluronic acid at entry and at the end of the study. Radiographic evaluation with an assisted computed program was performed to calculate progression of joint space narrowing. Statistical tests served to determine correlations between observed serum levels and radiograph joint space narrowing. RESULTS Among the 29 patients, 10 showed joint space narrowing greater than 0.6 mm per year. The initial concentration of TIMP-1 as well as delta value of variation in serum levels of TIMP-1 (difference between TIMP-1 concentration at entry and at the end) correlated with the progression of joint space narrowing. A cut-off value of 600 ng/ml of TIMP-1 allowed the patients who progressed slowly from those who progressed more rapidly. Hyaluronic acid serum level was not predictive of evolution. CONCLUSION TIMP-1 serum level may serve to predict the evolution of patients with hip OA.
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Affiliation(s)
- X Chevalier
- Department of Rheumatology, Hôpital Henri-Mondor, Université de Paris XII, Creteil, France.
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Rand N, Reichert F, Floman Y, Rotshenker S. Murine nucleus pulposus-derived cells secrete interleukins-1-beta, -6, and -10 and granulocyte-macrophage colony-stimulating factor in cell culture. Spine (Phila Pa 1976) 1997; 22:2598-601; discussion 2602. [PMID: 9399443 DOI: 10.1097/00007632-199711150-00002] [Citation(s) in RCA: 130] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
STUDY DESIGN Cultures established from murine disc-derived cells were stimulated by lipopolysaccharide. The cells' capacity to secrete proinflammatory cytokines and interleukin-10 with and without lipopolysaccharide stimulation was determined using enzyme-linked immunosorbent assays. OBJECTIVES To determine the capacity of disc-derived cells to secrete proinflammatory cytokines, and the effect of lipopolysaccharide stimulation on such secretion. SUMMARY OF BACKGROUND DATA The pathophysiology of compressive radiculopathy is unclear. Inflammation is a possible explanation. Proinflammatory cytokine secretion was demonstrated in herniated nucleus pulposus. It is unknown whether these cytokines are secreted from disc-derived cells or from infiltrating inflammatory cells in the herniated nucleus pulposus. METHODS Discs were microsurgically harvested from inbred mice and cut to allow the nucleus pulposus to establish cell culture. A study group was exposed to lipopolysaccharide stimulation. Media were harvested from the study and control groups 24 hours later. Secretion of interleukins-1-, -6, and -10, granulocyte-macrophage colony-stimulating factor, and tumor necrosis factor-alpha were determined using enzyme-linked immunosorbent assays. RESULTS Basal secretion of interleukins-6 and -10, but no basal secretion of interleukin-1-, granulocyte-macrophage colony-stimulating factor, or tumor necrosis factor-alpha was detected. Secretion of interleukin-1- rose from zero to 27.69 pg/10(5) cells, and granulocyte-macrophage colony-stimulating factor secretion rose from zero to 9.77 pg/10(5) cells after lipopolysaccharide stimulation. A 75-fold increase in interleukin-6 secretion and a 150-fold increase in interleukin-10 secretion were detected after stimulation with lipopolysaccharide. No tumor necrosis factor-alpha secretion was detectable. All result had high statistical significance (all P < 0.001). CONCLUSIONS Cultured murine disc-derived cells have the capacity to secrete proinflammatory cytokines and interleukin-10 in the absence of inflammatory cells. This finding supports the hypothesis that disc-derived cells are capable of initiating or amplifying an inflammatory process.
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Affiliation(s)
- N Rand
- Vanderbilt University Spine Center, Nashville, Tennessee 37232-2550, USA
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Kikuchi T, Yamada H, Shimmei M. Effect of high molecular weight hyaluronan on cartilage degeneration in a rabbit model of osteoarthritis. Osteoarthritis Cartilage 1996; 4:99-110. [PMID: 8806112 DOI: 10.1016/s1063-4584(05)80319-x] [Citation(s) in RCA: 104] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The effects of high molecular weight hyaluronan (HA) on cartilage degeneration were investigated in a partial menisectomy model of osteoarthritis (OA) in the rabbit knee. This study compared HA80 (0.8 x 10(6) Da, 1%), HA190 (1.9 x 10(6) Da, 0.01-1%) and saline. HA (0.1 ml/kg) or saline were injected intra-articularly twice a week immediately after surgery. Degenerative changes in femoral and tibial cartilages were graded histopathologically 2 and 4 weeks after surgery. Two weeks after surgery, HA190, only when used at a 1% concentration, resulted in a dramatic inhibition of cartilage degeneration in both the femoral condyle and the tibial plateau (P < 0.01). Two weeks after surgery, the protection against cartilage degeneration was significantly (P < 0.05) greater with HA190 than with HA80. Four weeks after surgery, only the femoral cartilage degeneration was significantly and similarly inhibited with HA190 (P < 0.01) and HA80 (P < 0.05). Scanning electron micrographs of femoral cartilage showed that cartilage degeneration was less severe with HA190 than with saline. These results might suggest that, in the rabbit model, intra-articular administration of higher molecular weight HA is more effective than lower molecular weight HA in inhibiting cartilage degeneration in early OA.
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Affiliation(s)
- T Kikuchi
- Department of Orthopaedic Surgery, National Defense Medical College, Saitama, Japan
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Abstract
There may be a great potential in the use of diagnostic "markers" of osteoarthritis in synovial fluid to diagnose the disease in an earlier stage and perhaps assess the severity of the disease and monitor the effect of a treatment. In the present study, potential markers are characterized, discussed, and grouped according to the latest knowledge on the etiology, pathogenesis, and pathology of osteoarthritis. They are grouped according to their origin as either cartilage degradation products, or related to the mechanisms of cartilage degradation, or related to chrondrocytic anabolic activity during disease, or related to genetic disorders. Also potential markers that have not yet been studied clinically or experimentally are discussed. Examples of the progress that has been made in human medicine approaching reliable diagnostic markers that should also be tried in veterinary medicine are described.
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Affiliation(s)
- A M Rørvik
- Norwegian College of Veterinary Medicine, Department of Small Animal Clinical Sciences, Oslo
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