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Song X, Liu Y, Chen S, Zhang L, Zhang H, Shen X, Du H, Sun R. Knee osteoarthritis: A review of animal models and intervention of traditional Chinese medicine. Animal Model Exp Med 2024; 7:114-126. [PMID: 38409942 PMCID: PMC11079151 DOI: 10.1002/ame2.12389] [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: 11/01/2023] [Accepted: 01/10/2024] [Indexed: 02/28/2024] Open
Abstract
BACKGROUND Knee osteoarthritis (KOA) characterized by degeneration of knee cartilage and subsequent bone hyperplasia is a prevalent joint condition primarily affecting aging adults. The pathophysiology of KOA remains poorly understood, as it involves complex mechanisms that result in the same outcome. Consequently, researchers are interested in studying KOA and require appropriate animal models for basic research. Chinese herbal compounds, which consist of multiple herbs with diverse pharmacological properties, possess characteristics such as multicomponent, multipathway, and multitarget effects. The potential benefits in the treatment of KOA continue to attract attention. PURPOSE This study aims to provide a comprehensive overview of the advantages, limitations, and specific considerations in selecting different species and methods for KOA animal models. This will help researchers make informed decisions when choosing an animal model. METHODS Online academic databases (e.g., PubMed, Google Scholar, Web of Science, and CNKI) were searched using the search terms "knee osteoarthritis," "animal models," "traditional Chinese medicine," and their combinations, primarily including KOA studies published from 2010 to 2023. RESULTS Based on literature retrieval, this review provides a comprehensive overview of the methods of establishing KOA animal models; introduces the current status of advantages and disadvantages of various animal models, including mice, rats, rabbits, dogs, and sheep/goats; and presents the current status of methods used to establish KOA animal models. CONCLUSION This study provides a review of the animal models used in recent KOA research, discusses the common modeling methods, and emphasizes the role of traditional Chinese medicine compounds in the treatment of KOA.
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Affiliation(s)
- Xuyu Song
- Orthopaedic trauma surgeryThe Second Hospital of Shandong UniversityJinanShandongChina
| | - Ying Liu
- Academy of Traditional Chinese MedicineTianjin University of Traditional Chinese MedicineTianjinChina
| | - Siyi Chen
- Academy of Traditional Chinese MedicineTianjin University of Traditional Chinese MedicineTianjinChina
| | - Lei Zhang
- Department of Traditional Chinese MedicineThe Second Hospital of Shandong UniversityJinanShandongChina
| | - Huijie Zhang
- College of pharmacyShandong University of Traditional Chinese MedicineJinanShandongChina
| | - Xianhui Shen
- The Second Clinical College of Shandong UniversityShandong UniversityJinanShandongChina
| | - Hang Du
- The Second Clinical College of Shandong UniversityShandong UniversityJinanShandongChina
| | - Rong Sun
- Advanced Medical Research InstituteShandong UniversityJinanShandongChina
- The Second Hospital of Shandong UniversityJinanShandongChina
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2
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Punzón E, Salgüero R, Totusaus X, Mesa-Sánchez C, Badiella L, García-Castillo M, Pradera A. Equine umbilical cord mesenchymal stem cells demonstrate safety and efficacy in the treatment of canine osteoarthritis: a randomized placebo-controlled trial. J Am Vet Med Assoc 2022; 260:1947-1955. [PMID: 36198051 DOI: 10.2460/javma.22.06.0237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To demonstrate the efficacy and safety of mesenchymal stem cells (MSCs) for xenogeneic use with intra-articular administration in dogs with osteoarthritis. ANIMALS 80 client-owned dogs with naturally occurring osteoarthritis in elbow or hip. PROCEDURES A multicentric, double-blinded, parallel, randomized and placebo-controlled clinical trial was performed. After intra-articular injection of equine umbilical cord MSCs, dogs were reexamined at weeks 4, 8, and 12 using a force platform (gait analysis), orthopedic assessment, and validated owner questionnaire. Eighteen months after treatment, a long-term follow-up was done. RESULTS Best results were obtained 8 weeks after treatment, where 63% of the patients showed an improvement in the gait analysis. Also 8 weeks after treatment, 77% of the dogs improved in the orthopedic examination; 65% of the owners considered that the treatment improved their pet's quality of life 8 weeks after treatment. The long-term follow-up revealed that 59% of the owners observed a duration of effect longer than 6 months after a single intra-articular injection of equine umbilical cord MSCs. No systemic or permanent adverse events were detected at any time point. CLINICAL RELEVANCE Results of this study demonstrated the safety and efficacy of intra-articular administration of xenogeneic MSCs for the treatment of canine osteoarthritis.
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Affiliation(s)
| | - Raquel Salgüero
- 2Departament de Diagnóstico por Imágenes, Hospital Veterinario Veterios, Madrid, Spain.,4VetOracle Teleradiology, Diss, UK
| | | | | | - Llorenç Badiella
- 6Servei d'Estadística Aplicada, Universitat Autònoma de Barcelona, Cerdanyola, Spain.,7Departament de Matemàtiques, Universitat Autònoma de Barcelona, Cerdanyola, Spain
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3
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Alves JC, Santos A, Jorge P, Lavrador C, Carreira LM. Effect of a single intra-articular administration of stanozolol in a naturally occurring canine osteoarthritis model: a randomised trial. Sci Rep 2022; 12:5887. [PMID: 35393497 PMCID: PMC8989994 DOI: 10.1038/s41598-022-09934-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 03/23/2022] [Indexed: 11/21/2022] Open
Abstract
Osteoarthritis (OA) is a disease with a high negative impact on patient’s quality of life and a high financial burden. It is a source of chronic pain and affects all mammals, including humans and dogs. As the dog is a common model for translation research of human OA, and exploring spontaneous dog OA can improve the health and well-being of both humans and dogs. To describe the effect of the intra-articular administration of stanozolol in a naturally occurring canine OA model, forty canine (N = 40) hip joints were randomly assigned to receive stanozolol or saline (control). On treatment day and at 8, 15, 30, 90, and 180 days post-treatment, several evaluations were conducted: weight distribution, joint range of motion, thigh girth, digital thermography, and radiographic signs. Also, synovial fluid C-reactive protein and interleukin-1 levels were evaluated. Results from four Clinical Metrology Instruments was also gathered. Results were compared with Repeated Measures ANOVA, with a Huynh–Feldt correction, paired-samples t-test, or Wilcoxon signed-rank test, with p < 0.05. OA was graded as mild (90%), moderate (5%), and severe (5%), including both sexes. They had a mean age of 6.5 ± 2.4 years and a bodyweight of 26.7 ± 5.2 kg. No differences were found between groups at treatment day in all considered evaluations. Weight distribution showed significant improvements with stanozolol from 15 days (p < 0.05) up to 180 days (p < 0.01). Lower values during thermographic evaluation in both views taken and improved joint extension at 90 (p = 0.02) and 180 days (p < 0.01) were observed. Pain and function scores improved up to 180 days. In the control group, radiographic signs progressed, in contrast with stanozolol. The use of stanozolol was safe and produced significant improvements in weight-bearing, pain score, and clinical evaluations in a naturally occurring canine OA model.
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Affiliation(s)
- J C Alves
- Divisão de Medicina Veterinária, Guarda Nacional Republicana (GNR), Rua Presidente Arriaga, 9, 1200-771, Lisbon, Portugal. .,MED - Mediterranean Institute for Agriculture, Environment and Development, Instituto de Investigação e Formação Avançada, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554, Évora, Portugal.
| | - A Santos
- Divisão de Medicina Veterinária, Guarda Nacional Republicana (GNR), Rua Presidente Arriaga, 9, 1200-771, Lisbon, Portugal
| | - P Jorge
- Divisão de Medicina Veterinária, Guarda Nacional Republicana (GNR), Rua Presidente Arriaga, 9, 1200-771, Lisbon, Portugal
| | - C Lavrador
- MED - Mediterranean Institute for Agriculture, Environment and Development, Instituto de Investigação e Formação Avançada, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554, Évora, Portugal
| | - L Miguel Carreira
- Faculty of Veterinary Medicine, University of Lisbon (FMV/ULisboa), Lisbon, Portugal.,Interdisciplinary Centre for Research in Animal Health (CIISA), University of Lisbon (FMV/ULisboa), Lisbon, Portugal.,Anjos of Assis Veterinary Medicine Centre (CMVAA), Barreiro, Portugal
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4
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Veloso C, Videira RA, Andrade PB, Cardoso C, Vitorino C. In vivo methodologies to assist preclinical development of topical fixed-dose combinations for pain management. Int J Pharm 2022; 616:121530. [PMID: 35121043 DOI: 10.1016/j.ijpharm.2022.121530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 01/18/2022] [Accepted: 01/27/2022] [Indexed: 11/24/2022]
Abstract
The combination in a fixed dose of two or more active pharmaceutical ingredients in the same pharmaceutical dosage form is an approach that has been used successfully in the treatment of several pathologies, including pain. In the preclinical development of a topical fixed-dose combination product with analgesic and anti-inflammatory activities for pain management, the main objective is to establish the nature of the interaction between the different active pharmaceutical ingredients while obtaining data on the medicinal product safety and efficacy. Despite the improvement of in vitro assays, animal models remain a fundamental strategy to characterise the interaction, efficacy and safety of active pharmaceutical ingredients at the physiological level, which cannot be reached by in vitro assays. Thus, the main goal of this review is to systematise the available animal models to evaluate the efficacy and safety of a new fixed-dose combination product for topical administration indicated for pain management. Particular emphasis is given to animal models that are accepted for regulatory purposes.
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Affiliation(s)
- Cláudia Veloso
- Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal; Coimbra Chemistry Center, Department of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal
| | - Romeu A Videira
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, R. Jorge Viterbo Ferreira, n° 228, 4050-313 Porto, Portugal.
| | - Paula B Andrade
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, R. Jorge Viterbo Ferreira, n° 228, 4050-313 Porto, Portugal
| | - Catarina Cardoso
- Laboratórios Basi, Parque Industrial Manuel Lourenço Ferreira, lote 15, 3450-232 Mortágua, Portugal
| | - Carla Vitorino
- Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal; Coimbra Chemistry Center, Department of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal.
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5
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Beths T, Munn R, Bauquier SH, Mitchell P, Whittem T. A pilot study of 4CYTE™ Epiitalis® Forte, a novel nutraceutical, in the management of naturally occurring osteoarthritis in dogs. Aust Vet J 2020; 98:591-595. [PMID: 32978786 DOI: 10.1111/avj.13024] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Revised: 09/06/2020] [Accepted: 09/11/2020] [Indexed: 01/13/2023]
Abstract
The primary goal of this pilot study was to assess, the efficacy of a new nutraceutical, 4CYTE™ Epiitalis® Forte, containing, as a standalone, a proprietary plant oil extract, Epiitalis, in dogs presenting with signs of osteoarthritis (OA). Fifty dogs aged 9.2 (±3.2) years with signs of naturally occurring OA were included in this report. They were free of other comorbidities and were not on any medications except for those utilised for managing their OA. In these dogs, the current treatments were continued to avoid any sudden changes in their disease management. The effects of the 4CYTE Epiitalis Forte were assessed both at the beginning and at the end of a 1 month-long treatment period. The evaluation consisted of an objective lameness assessment (TPI%[total pressure index]) using a gait analysis (GAITRite® Portable Walkway System) and a subjective quality-of-life questionnaire, the Helsinki Chronic Pain Index (HCPI). Additional exploratory objective measurements included the Symmetry Index (SI) and the fore/hind limb ratio (T/P TPI%). Of dogs, 74% (34/46) registered a numerical improvement in TPI% in their worse limb. In addition, of the 93.5% of the dogs that demonstrated improvement in their HCPI scores by at least 5% on the quality-of-life questionnaire, 79% demonstrated improvements in gait based on TPI%. Finally, there were improvements measured in both exploratory objective endpoints SI and T/P TPI%. These encouraging results will be used to develop a protocol for a follow-up placebo-controlled randomised study to confirm the efficacy of this new nutraceutical for dogs suffering from OA.
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Affiliation(s)
- T Beths
- Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Werribee, Victoria, 3030, Australia
| | - R Munn
- Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Werribee, Victoria, 3030, Australia
| | - S H Bauquier
- Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Werribee, Victoria, 3030, Australia
| | - P Mitchell
- Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Werribee, Victoria, 3030, Australia
| | - T Whittem
- Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Werribee, Victoria, 3030, Australia
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6
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Meeson RL, Todhunter RJ, Blunn G, Nuki G, Pitsillides AA. Spontaneous dog osteoarthritis - a One Medicine vision. Nat Rev Rheumatol 2020; 15:273-287. [PMID: 30953036 PMCID: PMC7097182 DOI: 10.1038/s41584-019-0202-1] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Osteoarthritis (OA) is a global disease that, despite extensive research, has limited treatment options. Pet dogs share both an environment and lifestyle attributes with their owners, and a growing awareness is developing in the public and among researchers that One Medicine, the mutual co-study of animals and humans, could be beneficial for both humans and dogs. To that end, this Review highlights research opportunities afforded by studying dogs with spontaneous OA, with a view to sharing this active area of veterinary research with new audiences. Similarities and differences between dog and human OA are examined, and the proposition is made that suitably aligned studies of spontaneous OA in dogs and humans, in particular hip and knee OA, could highlight new avenues of discovery. Developing cross-species collaborations will provide a wealth of research material and knowledge that is relevant to human OA and that cannot currently be obtained from rodent models or experimentally induced dog models of OA. Ultimately, this Review aims to raise awareness of spontaneous dog OA and to stimulate discussion regarding its exploration under the One Medicine initiative to improve the health and well-being of both species. Osteoarthritis occurs spontaneously in pet dogs, which often share environmental and lifestyle risk-factors with their owners. This Review aims to stimulate cooperation between medical and veterinary research under the One Medicine initiative to improve the welfare of dogs and humans. Dogs have many analogous spontaneous diseases that result in end-stage osteoarthritis (OA). Inbreeding and the predisposition of certain dog breeds for OA enable easier identification of candidate genetic associations than in outbred humans. Dog OA subtypes offer a potential stratification rationale for aetiological differences and alignment to analogous human OA phenotypes. The relatively compressed time course of spontaneous dog OA offers longitudinal research opportunities. Collaboration with veterinary researchers can provide tissue samples from early-stage OA and opportunities to evaluate new therapeutics in a spontaneous disease model. Awareness of the limitations and benefits of using clinical veterinary patients in research is important.
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Affiliation(s)
- Richard L Meeson
- Skeletal Biology Group, Comparative Biomedical Sciences, Royal Veterinary College, University of London, London, UK.,Department of Clinical Services and Sciences, Royal Veterinary College, University of London, London, UK.,Institute of Orthopaedics and Musculoskeletal Science, University College London, London, UK
| | - Rory J Todhunter
- Department of Clinical Sciences, Cornell University, Ithaca, NY, USA.,Cornell Veterinary Biobank, Cornell University, Ithaca, NY, USA
| | - Gordon Blunn
- Institute of Orthopaedics and Musculoskeletal Science, University College London, London, UK.,School of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth, UK
| | - George Nuki
- Institute for Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
| | - Andrew A Pitsillides
- Skeletal Biology Group, Comparative Biomedical Sciences, Royal Veterinary College, University of London, London, UK.
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7
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Laugier M, Tremblay J, Petit Y, Grignon-Lemieux A, Levasseur A, Lussier B. Three-dimensional kinematic evaluation of Tightrope CCL in a canine in vitro cranial cruciate deficient stifle model. CANADIAN JOURNAL OF VETERINARY RESEARCH = REVUE CANADIENNE DE RECHERCHE VETERINAIRE 2019; 83:317-321. [PMID: 31571733 PMCID: PMC6753885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 12/12/2018] [Indexed: 06/10/2023]
Abstract
The impact of surgical correction of cranial cruciate ligament-deficient stifles (CCDS) on the 3-dimensional (3D) kinematics of the canine stifle has been sparsely evaluated. Tightrope (TR) cranial cruciate ligament (CCL) has been proposed to restore baseline 3D kinematics in CCDS by using isometric points. We hypothesized that TR would restore baseline 3D kinematics of the stifle in our model. Ten pelvic limbs were used with a previously validated apparatus. Three experimental conditions were evaluated: i) intact stifle, ii) cranial cruciate ligament transection (CCLt), and iii) CCLt stabilized with TR; kinematic data was recorded. Tightrope CCL in CCDS did not limit sagittal flexion. Tightrope CCL neutralized internal rotation without restoring baseline curves, but it did not restore abduction, nor did it neutralize or restore cranial translation, but it did restore latero-medial and proximo-distal translations. In our model, TR without pre-conditioning of the FiberTape strands did not restore baseline stifle 3D kinematics and residual cranial translation could result in frequent meniscal tears.
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Affiliation(s)
- Mathieu Laugier
- Faculté de médecine vétérinaire, Département de sciences cliniques, (Laugier); Départment de sciences cliniques, GREPAQ, Faculté de médecine vétérinaire, OA research unit CRCHUM (Lussier), Université de Montréal, 3200 rue Sicotte, Saint-Hyacinthe, Quebec J2S 2M2; Research Center (Tremblay), École de technologie supérieure, Department of mechanical engineering, Research Center (Petit, Levasseur), Sacré-Coeur Hospital, Montréal; École de technologie supérieure, Montréal (Grignon-Lemieux)
| | - Jaëlle Tremblay
- Faculté de médecine vétérinaire, Département de sciences cliniques, (Laugier); Départment de sciences cliniques, GREPAQ, Faculté de médecine vétérinaire, OA research unit CRCHUM (Lussier), Université de Montréal, 3200 rue Sicotte, Saint-Hyacinthe, Quebec J2S 2M2; Research Center (Tremblay), École de technologie supérieure, Department of mechanical engineering, Research Center (Petit, Levasseur), Sacré-Coeur Hospital, Montréal; École de technologie supérieure, Montréal (Grignon-Lemieux)
| | - Yvan Petit
- Faculté de médecine vétérinaire, Département de sciences cliniques, (Laugier); Départment de sciences cliniques, GREPAQ, Faculté de médecine vétérinaire, OA research unit CRCHUM (Lussier), Université de Montréal, 3200 rue Sicotte, Saint-Hyacinthe, Quebec J2S 2M2; Research Center (Tremblay), École de technologie supérieure, Department of mechanical engineering, Research Center (Petit, Levasseur), Sacré-Coeur Hospital, Montréal; École de technologie supérieure, Montréal (Grignon-Lemieux)
| | - Alexandre Grignon-Lemieux
- Faculté de médecine vétérinaire, Département de sciences cliniques, (Laugier); Départment de sciences cliniques, GREPAQ, Faculté de médecine vétérinaire, OA research unit CRCHUM (Lussier), Université de Montréal, 3200 rue Sicotte, Saint-Hyacinthe, Quebec J2S 2M2; Research Center (Tremblay), École de technologie supérieure, Department of mechanical engineering, Research Center (Petit, Levasseur), Sacré-Coeur Hospital, Montréal; École de technologie supérieure, Montréal (Grignon-Lemieux)
| | - Annie Levasseur
- Faculté de médecine vétérinaire, Département de sciences cliniques, (Laugier); Départment de sciences cliniques, GREPAQ, Faculté de médecine vétérinaire, OA research unit CRCHUM (Lussier), Université de Montréal, 3200 rue Sicotte, Saint-Hyacinthe, Quebec J2S 2M2; Research Center (Tremblay), École de technologie supérieure, Department of mechanical engineering, Research Center (Petit, Levasseur), Sacré-Coeur Hospital, Montréal; École de technologie supérieure, Montréal (Grignon-Lemieux)
| | - Bertrand Lussier
- Faculté de médecine vétérinaire, Département de sciences cliniques, (Laugier); Départment de sciences cliniques, GREPAQ, Faculté de médecine vétérinaire, OA research unit CRCHUM (Lussier), Université de Montréal, 3200 rue Sicotte, Saint-Hyacinthe, Quebec J2S 2M2; Research Center (Tremblay), École de technologie supérieure, Department of mechanical engineering, Research Center (Petit, Levasseur), Sacré-Coeur Hospital, Montréal; École de technologie supérieure, Montréal (Grignon-Lemieux)
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Cope P, Ourradi K, Li Y, Sharif M. Models of osteoarthritis: the good, the bad and the promising. Osteoarthritis Cartilage 2019; 27:230-239. [PMID: 30391394 PMCID: PMC6350005 DOI: 10.1016/j.joca.2018.09.016] [Citation(s) in RCA: 137] [Impact Index Per Article: 27.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Revised: 08/30/2018] [Accepted: 09/13/2018] [Indexed: 02/02/2023]
Abstract
Osteoarthritis (OA) is a chronic degenerative disease of diarthrodial joints most commonly affecting people over the age of forty. The causes of OA are still unknown and there is much debate in the literature as to the exact sequence of events that trigger the onset of the heterogeneous disease we recognise as OA. There is currently no consensus model for OA that naturally reflects human disease. Existing ex-vivo models do not incorporate the important inter-tissue communication between joint components required for disease progression and differences in size, anatomy, histology and biomechanics between different animal models makes translation to the human model very difficult. This narrative review highlights the advantages and disadvantages of the current models used to study OA. It discusses the challenges of producing a more reliable OA-model and proposes a direction for the development of a consensus model that reflects the natural environment of human OA. We suggest that a human osteochondral plug-based model may overcome many of the fundamental limitations associated with animal and in-vitro models based on isolated cells. Such a model will also provide a platform for the development and testing of targeted treatment and validation of novel OA markers directly on human tissues.
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Affiliation(s)
| | | | | | - M. Sharif
- Address correspondence and reprint requests to: M. Sharif, Musculoskeletal Research Unit, Translational Health Sciences, Bristol Medical School, University of Bristol, Learning and Research Building level 2, Southmead Hospital, Bristol, BS10 5NB, UK. Tel: 44-117-414-7926.
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Abstract
Osteochondral (OC) lesions are a major cause of chronic musculoskeletal pain and functional disability, which reduces the quality of life of the patients and entails high costs to the society. Currently, there are no effective treatments, so in vitro and in vivo disease models are critically important to obtain knowledge about the causes and to develop effective treatments for OC injuries. In vitro models are essential to clarify the causes of the disease and the subsequent design of the first barrier to test potential therapeutics. On the other hand, in vivo models are anatomically more similar to humans allowing to reproduce the pattern and progression of the lesion in a controlled scene and offering the opportunity to study the symptoms and responses to new treatments. Moreover, in vivo models are the most suitable preclinical model, being a fundamental and a mandatory step to ensure the successful transfer to clinical trials. Both in vitro and in vitro models have a number of advantages and limitation, and the choice of the most appropriate model for each study depends on many factors, such as the purpose of the study, handling or the ease to obtain, and cost, among others. In this chapter, we present the main in vitro and in vivo OC disease models that have been used over the years in the study of origin, progress, and treatment approaches of OC defects.
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10
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Donahue SW. Krogh's principle for musculoskeletal physiology and pathology. JOURNAL OF MUSCULOSKELETAL & NEURONAL INTERACTIONS 2018; 18:284-291. [PMID: 30179205 PMCID: PMC6146200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
August Krogh was a comparative physiologist who used frogs, guinea pigs, cats, dogs, and horses in his research that led to his Nobel Prize on muscle physiology. His idea to choose the most relevant organism to study problems in physiology has become known as Krogh's principle. Indeed, many important discoveries in physiology have been made using naturally occurring animal models. However, the majority of research today utilizes laboratory mouse and rat models to study problems in physiology. This paper discusses how Krogh's principle can be invoked in musculoskeletal research as a complementary approach to using standard laboratory rodent models for solving problems in musculoskeletal physiology. This approach may increase our ability to treat musculoskeletal diseases clinically. For example, it has been noted that progress in osteogenesis imperfecta research has been limited by the absence of a naturally occurring animal model. Several examples of naturally occurring animal models are discussed including osteoarthritis and osteosarcoma in dogs, resistance to disuse induced bone and skeletal muscle loss in mammalian hibernators, and bone phenotypic plasticity in fish lacking osteocytes. Many musculoskeletal diseases (e.g., osteoarthritis) occur naturally in companion animals, which may provide clues on etiology and progression of musculoskeletal diseases and accelerate the development of pharmaceutical therapies for humans.
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Affiliation(s)
- Seth W. Donahue
- Department of Biomedical Engineering, University of Massachusetts, USA,Corresponding author: Seth W. Donahue, Department of Biomedical Engineering, University of Massachusetts Amherst, Amherst, MA 01003, USA E-mail:
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11
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Evaluation of the Curative Effect of Umbilical Cord Mesenchymal Stem Cell Therapy for Knee Arthritis in Dogs Using Imaging Technology. Stem Cells Int 2018; 2018:1983025. [PMID: 29861739 PMCID: PMC5976915 DOI: 10.1155/2018/1983025] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 03/22/2018] [Accepted: 03/29/2018] [Indexed: 12/24/2022] Open
Abstract
Objective The aim of this study was to assess the efficacy of canine umbilical cord mesenchymal stem cells (UC-MSCs) on the treatment of knee osteoarthritis in dogs. Methods Eight dogs were evenly assigned to two groups. The canine model of knee osteoarthritis was established by surgical manipulation of knee articular cartilage on these eight dogs. UC-MSCs were isolated from umbilical cord Wharton's jelly by 0.1% type collagenase I and identified by immunofluorescence staining and adipogenic and osteogenic differentiation in vitro. A suspension of allogeneic UC-MSCs (1 × 106) and an equal amount of physiological saline was injected into the cavitas articularis in the treated and untreated control groups, respectively, on days 1 and 3 posttreatment. The structure of the canine knee joint was observed by magnetic resonance imaging (MRI), B-mode ultrasonography, and X-ray imaging at the 3rd, 7th, 14th, and 28th days after treatment. Concurrently, the levels of IL-6, IL-7, and TNF-α in the blood of the examined dogs were measured. Moreover, the recovery of cartilage and patella surface in the treated group and untreated group was compared using a scanning electron microscope (SEM) after a 35-day treatment. Results Results revealed that the isolated cells were UC-MSCs, because they were positive for CD44 and negative for CD34 surface markers, and the cells were differentiated into adipocytes and osteoblasts. Imaging technology showed that as treatment time increased, the high signal in the MRI T2-weighted images decreased, the echo-free space in B ultrasonography images disappeared basically, and the continuous linear hypoechoic region at the trochlear sulcus thickened. On X-ray images, the serrate defect at the ventral cortex of the patella improved, and the low-density gap of the ventral patella and trochlear crest gradually increased in the treated group. On the contrary, the high signal in the MRI T2-weighted images and the echo-free space in B ultrasonography images still increased after a 14-day treatment in the untreated control group, and the linear hypoechoic region was discontinuous. On the X-ray images, there was no improvement in the serrate defect of the ventral cortex of the patella. Results for inflammatory factors showed that the blood levels of IL-6, IL-7, and TNF-α of the untreated control group were significantly higher than those of the treated group (P < 0.05) 7-14 days posttreatment. The result of SEM showed that the cartilage neogenesis in the treated group had visible neonatal tissue and more irregular arrangement of new tissue fibers than that of the untreated control group. Furthermore, more vacuoles but without collagen fibers were observed in the cartilage of the untreated control group, and the thickness of the neogenetic cartilage in the treated group (65.13 ± 5.29, 65.30 ± 5.83) and the untreated control group (34.27 ± 5.42) showed a significant difference (P < 0.01). Conclusion Significantly higher improvement in cartilage neogenesis and recovery was observed in the treated group compared to the untreated control group. The joint fluid and the inflammatory response in the treated group decreased. Moreover, improved recovery in the neogenetic cartilage, damaged skin fascia, and muscle tissue around the joints was more significant in the treated group than in the untreated control group. In conclusion, canine UC-MSCs promote the repair of cartilage and patella injury in osteoarthritis, improve the healing of the surrounding tissues, and reduce the inflammatory response.
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Abstract
Failure of analgesic drugs in clinical development is common. Along with the current "reproducibility crisis" in pain research, this has led some to question the use of animal models. Experimental models tend to comprise genetically homogeneous groups of young, male rodents in restricted and unvarying environments, and pain-producing assays that may not closely mimic the natural condition of interest. In addition, typical experimental outcome measures using thresholds or latencies for withdrawal may not adequately reflect clinical pain phenomena pertinent to human patients. It has been suggested that naturally occurring disease in veterinary patients may provide more valid models for the study of painful disease. Many painful conditions in animals resemble those in people. Like humans, veterinary patients are genetically diverse, often live to old age, and enjoy a complex environment, often the same as their owners. There is increasing interest in the development and validation of outcome measures for detecting pain in veterinary patients; these include objective (eg, locomotor activity monitoring, kinetic evaluation, quantitative sensory testing, and bioimaging) and subjective (eg, pain scales and quality of life scales) measures. Veterinary subject diversity, pathophysiological similarities to humans, and diverse outcome measures could yield better generalizability of findings and improved translation potential, potentially benefiting both humans and animals. The Comparative Oncology Trial Consortium in dogs has pawed the way for translational research, surmounting the challenges inherent in veterinary clinical trials. This review describes numerous conditions similarly applicable to pain research, with potential mutual benefits for human and veterinary clinicians, and their respective patients.
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Lussier B, Gagnon A, Moreau M, Pelletier JP, Troncy É. Peak vertical force in a stabilized canine cranial cruciate deficient stifle model: A one-year follow-up. CANADIAN JOURNAL OF VETERINARY RESEARCH = REVUE CANADIENNE DE RECHERCHE VETERINAIRE 2018; 82:159-161. [PMID: 29755197 PMCID: PMC5914080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 09/22/2017] [Indexed: 06/08/2023]
Abstract
This study aimed to describe the peak vertical force (PVF) over a 1-year period in a stabilized canine cranial cruciate deficient stifle model. Our hypothesis was that PVF would be restored to Baseline (intact) at the end of the follow-up. Fifteen (> 20 kg) mixed-breed dogs were included in this study. Cranial cruciate ligament was transected on Day (D) 0 followed by lateral suture stabilization at D28. Peak vertical force was acquired at D-1, D14, D26, D91, D210 and D357. When compared to Baseline, the PVF was significantly decreased at D14, D26, and D91. Values at D210 and D357 were not statistically different to Baseline. This study suggests a return to normal baseline peak vertical force in a canine cranial cruciate deficient stifle model when lateral suture stabilization has been performed 28 days after surgical transection.
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Affiliation(s)
- Bertrand Lussier
- Quebec Animal Pharmacology Research Group (Groupe de recherche en pharmacologie animale du Québec; GREPAQ), Université de Montréal, Saint-Hyacinthe, Quebec J2S 2M2 (Lussier, Gagnon, Moreau, Troncy); Osteoarthritis Research Unit, Centre hospitalier de l'Université de Montréal, Hôpital Notre-Dame, Montreal, Quebec H2L 4M1 (Lussier, Moreau, Pelletier, Troncy)
| | - Alexandre Gagnon
- Quebec Animal Pharmacology Research Group (Groupe de recherche en pharmacologie animale du Québec; GREPAQ), Université de Montréal, Saint-Hyacinthe, Quebec J2S 2M2 (Lussier, Gagnon, Moreau, Troncy); Osteoarthritis Research Unit, Centre hospitalier de l'Université de Montréal, Hôpital Notre-Dame, Montreal, Quebec H2L 4M1 (Lussier, Moreau, Pelletier, Troncy)
| | - Maxim Moreau
- Quebec Animal Pharmacology Research Group (Groupe de recherche en pharmacologie animale du Québec; GREPAQ), Université de Montréal, Saint-Hyacinthe, Quebec J2S 2M2 (Lussier, Gagnon, Moreau, Troncy); Osteoarthritis Research Unit, Centre hospitalier de l'Université de Montréal, Hôpital Notre-Dame, Montreal, Quebec H2L 4M1 (Lussier, Moreau, Pelletier, Troncy)
| | - Jean-Pierre Pelletier
- Quebec Animal Pharmacology Research Group (Groupe de recherche en pharmacologie animale du Québec; GREPAQ), Université de Montréal, Saint-Hyacinthe, Quebec J2S 2M2 (Lussier, Gagnon, Moreau, Troncy); Osteoarthritis Research Unit, Centre hospitalier de l'Université de Montréal, Hôpital Notre-Dame, Montreal, Quebec H2L 4M1 (Lussier, Moreau, Pelletier, Troncy)
| | - Éric Troncy
- Quebec Animal Pharmacology Research Group (Groupe de recherche en pharmacologie animale du Québec; GREPAQ), Université de Montréal, Saint-Hyacinthe, Quebec J2S 2M2 (Lussier, Gagnon, Moreau, Troncy); Osteoarthritis Research Unit, Centre hospitalier de l'Université de Montréal, Hôpital Notre-Dame, Montreal, Quebec H2L 4M1 (Lussier, Moreau, Pelletier, Troncy)
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Klinck MP, Gruen ME, del Castillo JR, Guillot M, Thomson AE, Heit M, Lascelles BDX, Troncy E. Development and preliminary validity and reliability of the montreal instrument for cat arthritis testing, for use by caretaker/owner, MI-CAT(C), via a randomised clinical trial. Appl Anim Behav Sci 2018. [DOI: 10.1016/j.applanim.2017.11.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Li X, Fu X, Gao Y, Li H, Wang W, Shen Y. Expression of tissue inhibitor of metalloproteinases-1 and B-cell lymphoma-2 in the synovial membrane in patients with knee osteoarthritis. Exp Ther Med 2018; 15:885-889. [PMID: 29399094 PMCID: PMC5772747 DOI: 10.3892/etm.2017.5462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 09/25/2017] [Indexed: 11/22/2022] Open
Abstract
The purpose of this study was to determine the expression and impact of tissue inhibitor of metalloproteinases-1 (TIMP-1) and B-cell lymphoma-2 (Bcl-2) in knee osteoarthritis (KOA). We collected synovial fluids from the knee joint of 70 KOA patients and 30 controls. The expression levels of TIMP-1 and Bcl-2 were significantly higher in KOA patients than those in the control group (P<0.01). We also found positive correlation between the severity of KOA and the expression level of TIMP-1 (r=0.8027, P<0.05) and and Bcl-2 (r=0.5336, P<0.05). However, we found no correlation between the expression levels of TIMP-1 and Bcl-2 in the synovial membranes of KOA patients (P>0.05). Both TIMP-1 and Bcl-2 are expressed at high levels in the synovial membrane with KOA, and are closely related to the occurrence and development of KOA. Thus, detection of TIMP-1 and Bcl-2 in KOA patients can be helpful in diagnosing the state of KOA.
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Affiliation(s)
- Xiaomiao Li
- Department of Orthopedics, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
| | - Xiaodong Fu
- Department of Orthopedics, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
| | - Yingjian Gao
- Department of Orthopedics, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
| | - Hao Li
- Department of Orthopedics, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
| | - Weili Wang
- Department of Orthopedics, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
| | - Yi Shen
- Department of Orthopedics, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
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Comblain F, Barthélémy N, Lefèbvre M, Schwartz C, Lesponne I, Serisier S, Feugier A, Balligand M, Henrotin Y. A randomized, double-blind, prospective, placebo-controlled study of the efficacy of a diet supplemented with curcuminoids extract, hydrolyzed collagen and green tea extract in owner's dogs with osteoarthritis. BMC Vet Res 2017; 13:395. [PMID: 29262825 PMCID: PMC5738810 DOI: 10.1186/s12917-017-1317-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 12/11/2017] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND We have previously demonstrated that a mixture of Curcuminoids extract, hydrolyzed COllagen and green Tea extract (CCOT) inhibited inflammatory and catabolic mediator's synthesis by bovine and human chondrocytes. A randomly allocated, double-blind, prospective, placebo-controlled study was performed to evaluate the efficacy of a diet containing this CCOT mixture on dogs with naturally occurring osteoarthritis (OA). Therefore, 42 owner's dogs with OA were randomly assigned to receive for 3 months an experimental diet (control) or the same diet supplemented with CCOT. RESULTS Ground reaction forces did not show statistical differences between groups. After 3 months of feeding, there was a significant reduction of pain at manipulation in the CCOT group, but not in the control group. The evolution for pain at manipulation depended on the diet. The three other parameters evaluated by veterinary subjective assessment (lameness, pain at palpation and joint mobility) did not show statistical differences. Concerning owner subjective assessment, pain severity score worsened in the control group but remained stable in CCOT group. The evolution for pain severity depended on the diet. No statistical difference was found for pain interference, except for the ability to rise to standing from lying down, which was significantly improved in the CCOT compared to the control group. Serum OA biomarkers did not show statistical differences. CONCLUSIONS Objective variables measured, such as ground reaction forces and OA biomarkers, did not show statistical differences. However, indicators of pain appeared reduced in dogs receiving CCOT mixture for 3 months. The difference of evolution between groups suggests that a greater number of dogs may be necessary to reach a stronger effect on other parameters.
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Affiliation(s)
- Fanny Comblain
- Bone and Cartilage Research Unit, Arthropôle Liège, University of Liège, Liège, Belgium
| | - Nicolas Barthélémy
- Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Liège, Liège, Belgium
| | - Michael Lefèbvre
- Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Liège, Liège, Belgium
| | - Cédric Schwartz
- Laboratory of Human Motion Analysis, University of Liège, Liège, Belgium
| | | | | | | | - Marc Balligand
- Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Liège, Liège, Belgium
| | - Yves Henrotin
- Bone and Cartilage Research Unit, Arthropôle Liège, University of Liège, Liège, Belgium. .,Physical Therapy & Rehabilitation Department, Princess Paola Hospital, Vivalia, Marche-en-Famenne, Belgium.
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Dhollander A, Malone A, Price J, Getgood A. Determination of knee cartilage volume and surface area in beagle dogs: a pilot study. J Exp Orthop 2017; 4:35. [PMID: 29105014 PMCID: PMC5673056 DOI: 10.1186/s40634-017-0109-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 09/28/2017] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND The objective of this study was to determine the cartilage volume and surface area of male and female Beagle dog knees using 3D (3 dimensional) reconstructed MRI images. METHODS Six Beagle Dogs (Canis familiaris) (3 males and 3 females) of 10-18 months old and weighing between 7.2 and 17.1 kg underwent a MRI evaluation of both knees. The data acquired allowed a 3D reconstruction of the knee and measurement of the cartilage volume and surface area. RESULTS Mean knee cartilage volume (averaged over the right and left knees) of animals between 7.2 and 17.1 kg ranged from 319.7 to 647.3 mm3; while the mean knee cartilage surface area ranged from 427.14 to 757.2 mm2. There was evidence of both knee volume and surface area increasing linearly with animal bodyweight. CONCLUSIONS The cartilage volume and surface area of the Beagle dog appears to correlate significantly with body weight. This study provides a reference base for future studies investigating cartilage related pathology such as osteoarthritis.
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Affiliation(s)
- Aad Dhollander
- The Fowler Kennedy Sport Medicine Clinic, 3M Centre, The University of Western Ontario, London, ON N6A 3K7 Canada
- AZ Klina, Department of Orthopedic Surgery and Traumatology, Augustijnslei 100, 2930 Brasschaat, Belgium
| | - Amanda Malone
- Eupraxia Pharmaceuticals, Victoria, BC V8R 5J2 Canada
| | - James Price
- Eupraxia Pharmaceuticals, Victoria, BC V8R 5J2 Canada
| | - Alan Getgood
- The Fowler Kennedy Sport Medicine Clinic, 3M Centre, The University of Western Ontario, London, ON N6A 3K7 Canada
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Gagnon A, Brown D, Moreau M, Lussier B, Otis C, Troncy E. Therapeutic response analysis in dogs with naturally occurring osteoarthritis. Vet Anaesth Analg 2017; 44:1373-1381. [PMID: 29167071 DOI: 10.1016/j.vaa.2017.07.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 06/26/2017] [Accepted: 07/25/2017] [Indexed: 12/28/2022]
Abstract
OBJECTIVE Reporting the rate of positive (+) and negative (-) responders based on an objective outcome measure of pain-related functional disability/lameness in dogs with naturally occurring osteoarthritis (OA), and the relationship between initial lameness severity and the odds of being a (+) responder. STUDY DESIGN Retrospective analysis of published peer-reviewed clinical trials in dogs with naturally occurring OA. ANIMALS Dogs (n = 213) with hip and/or stifle afflicted-joints. METHODS A responder analysis was undertaken using a previously determined cut-off value of ±2.0% of body weight using the peak of vertical force (PVF). Among the selected trials, PVF was acquired under similar conditions. Therapeutic approaches were therapeutic diets, natural health products and nonsteroidal anti-inflammatory drugs. RESULTS Among dogs receiving a therapeutic approach as described above (n = 121), 62.8% [95% confidence interval, 53.9-70.9] were defined as (+) responders, whereas 11.6% [7.0-18.5] were (-) responders, accounting for a net (+) response rate by 51.2% [42.0-60.4]. In dogs receiving a negative control (n = 92), the net (+) response rate was 1.1% [0.0-5.9]. The number needed to treat was 4, and the effect size 0.7 [0.4-1.0]. The odds ratio of being a (+) responder under the therapeutic approaches was 2.85 [1.57-5.17] (p < 0.001). For every less severe lameness manifested with an increment in PVF by 1% body weight, the chance of being a (+) responder following treatment decreased by 9% (odds ratio 0.91 [0.86-0.97], p = 0.006). CONCLUSION AND CLINICAL RELEVANCE The rate of (+) responder optimizes decision making for the management of pain-related clinical signs of OA. Evidence-based medicine was further supported by clinical metrics based on an objective outcome measure of pain-related functional disability/lameness. This study also revealed that dogs with a mild lameness are less prone to be improved, emphasizing the need to carefully manage OA dogs in spite of a more subtle affliction.
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Affiliation(s)
- Alexandre Gagnon
- GREPAQ (Quebec Animal Pharmacology Research Group), Department of Veterinary Biomedical Sciences, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, Quebec, QC, Canada
| | - Dominique Brown
- GREPAQ (Quebec Animal Pharmacology Research Group), Department of Veterinary Biomedical Sciences, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, Quebec, QC, Canada
| | - Maxim Moreau
- GREPAQ (Quebec Animal Pharmacology Research Group), Department of Veterinary Biomedical Sciences, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, Quebec, QC, Canada; Osteoarthritis Research Unit, Université de Montréal Hospital Research Centre, Quebec, QC, Canada
| | - Bertrand Lussier
- GREPAQ (Quebec Animal Pharmacology Research Group), Department of Veterinary Biomedical Sciences, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, Quebec, QC, Canada; Osteoarthritis Research Unit, Université de Montréal Hospital Research Centre, Quebec, QC, Canada
| | - Colombe Otis
- GREPAQ (Quebec Animal Pharmacology Research Group), Department of Veterinary Biomedical Sciences, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, Quebec, QC, Canada; Osteoarthritis Research Unit, Université de Montréal Hospital Research Centre, Quebec, QC, Canada
| | - Eric Troncy
- GREPAQ (Quebec Animal Pharmacology Research Group), Department of Veterinary Biomedical Sciences, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, Quebec, QC, Canada; Osteoarthritis Research Unit, Université de Montréal Hospital Research Centre, Quebec, QC, Canada.
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Little D, Johnson S, Hash J, Olson SA, Estes BT, Moutos FT, Lascelles BDX, Guilak F. Functional outcome measures in a surgical model of hip osteoarthritis in dogs. J Exp Orthop 2016; 3:17. [PMID: 27525982 PMCID: PMC4987758 DOI: 10.1186/s40634-016-0053-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 07/22/2016] [Indexed: 01/01/2023] Open
Abstract
Background The hip is one of the most common sites of osteoarthritis in the body, second only to the knee in prevalence. However, current animal models of hip osteoarthritis have not been assessed using many of the functional outcome measures used in orthopaedics, a characteristic that could increase their utility in the evaluation of therapeutic interventions. The canine hip shares similarities with the human hip, and functional outcome measures are well documented in veterinary medicine, providing a baseline for pre-clinical evaluation of therapeutic strategies for the treatment of hip osteoarthritis. The purpose of this study was to evaluate a surgical model of hip osteoarthritis in a large laboratory animal model and to evaluate functional and end-point outcome measures. Methods Seven dogs were subjected to partial surgical debridement of cartilage from one femoral head. Pre- and postoperative pain and functional scores, gait analysis, radiographs, accelerometry, goniometry and limb circumference were evaluated through a 20-week recovery period, followed by histological evaluation of cartilage and synovium. Results Animals developed histological and radiographic evidence of osteoarthritis, which was correlated with measurable functional impairment. For example, Mankin scores in operated limbs were positively correlated to radiographic scores but negatively correlated to range of motion, limb circumference and 20-week peak vertical force. Conclusions This study demonstrates that multiple relevant functional outcome measures can be used successfully in a large laboratory animal model of hip osteoarthritis. These measures could be used to evaluate relative efficacy of therapeutic interventions relevant to human clinical care. Electronic supplementary material The online version of this article (doi:10.1186/s40634-016-0053-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Dianne Little
- Department of Orthopaedic Surgery, Duke University Medical Center, 375 MSRB 1, BOX 3093 DUMC, Durham, NC, 27710, USA. .,Department of Basic Medical Sciences, Purdue University College of Veterinary Medicine, 625 Harrison St West Lafayette, IN, USA.
| | - Stephen Johnson
- Department of Orthopaedic Surgery, Duke University Medical Center, 375 MSRB 1, BOX 3093 DUMC, Durham, NC, 27710, USA
| | - Jonathan Hash
- Comparative Pain Research Laboratory and Comparative Medicine Institute, Department of Clinical Sciences, North Carolina State University College of Veterinary Medicine, Raleigh, NC, USA
| | - Steven A Olson
- Department of Orthopaedic Surgery, Duke University Medical Center, 375 MSRB 1, BOX 3093 DUMC, Durham, NC, 27710, USA
| | - Bradley T Estes
- Department of Orthopaedic Surgery, Duke University Medical Center, 375 MSRB 1, BOX 3093 DUMC, Durham, NC, 27710, USA.,Cytex Therapeutics Inc, Durham, NC, 27705, USA
| | - Franklin T Moutos
- Department of Orthopaedic Surgery, Duke University Medical Center, 375 MSRB 1, BOX 3093 DUMC, Durham, NC, 27710, USA.,Cytex Therapeutics Inc, Durham, NC, 27705, USA
| | - B Duncan X Lascelles
- Comparative Pain Research Laboratory and Comparative Medicine Institute, Department of Clinical Sciences, North Carolina State University College of Veterinary Medicine, Raleigh, NC, USA
| | - Farshid Guilak
- Cytex Therapeutics Inc, Durham, NC, 27705, USA.,Department of Orthopaedic Surgery, Washington University and Shriners Hospitals for Children - St. Louis, St. Louis, MO, 63110, USA
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Otis C, Gervais J, Guillot M, Gervais JA, Gauvin D, Péthel C, Authier S, Dansereau MA, Sarret P, Martel-Pelletier J, Pelletier JP, Beaudry F, Troncy E. Concurrent validity of different functional and neuroproteomic pain assessment methods in the rat osteoarthritis monosodium iodoacetate (MIA) model. Arthritis Res Ther 2016; 18:150. [PMID: 27338815 PMCID: PMC4918125 DOI: 10.1186/s13075-016-1047-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Accepted: 06/09/2016] [Indexed: 11/17/2022] Open
Abstract
Background Lack of validity in osteoarthritis pain models and assessment methods is suspected. Our goal was to 1) assess the repeatability and reproducibility of measurement and the influence of environment, and acclimatization, to different pain assessment outcomes in normal rats, and 2) test the concurrent validity of the most reliable methods in relation to the expression of different spinal neuropeptides in a chemical model of osteoarthritic pain. Methods Repeatability and inter-rater reliability of reflexive nociceptive mechanical thresholds, spontaneous static weight-bearing, treadmill, rotarod, and operant place escape/avoidance paradigm (PEAP) were assessed by the intraclass correlation coefficient (ICC). The most reliable acclimatization protocol was determined by comparing coefficients of variation. In a pilot comparative study, the sensitivity and responsiveness to treatment of the most reliable methods were tested in the monosodium iodoacetate (MIA) model over 21 days. Two MIA (2 mg) groups (including one lidocaine treatment group) and one sham group (0.9 % saline) received an intra-articular (50 μL) injection. Results No effect of environment (observer, inverted circadian cycle, or exercise) was observed; all tested methods except mechanical sensitivity (ICC <0.3), offered good repeatability (ICC ≥0.7). The most reliable acclimatization protocol included five assessments over two weeks. MIA-related osteoarthritic change in pain was demonstrated with static weight-bearing, punctate tactile allodynia evaluation, treadmill exercise and operant PEAP, the latter being the most responsive to analgesic intra-articular lidocaine. Substance P and calcitonin gene-related peptide were higher in MIA groups compared to naive (adjusted P (adj-P) = 0.016) or sham-treated (adj-P = 0.029) rats. Repeated post-MIA lidocaine injection resulted in 34 times lower downregulation for spinal substance P compared to MIA alone (adj-P = 0.029), with a concomitant increase of 17 % in time spent on the PEAP dark side (indicative of increased comfort). Conclusion This study of normal rats and rats with pain established the most reliable and sensitive pain assessment methods and an optimized acclimatization protocol. Operant PEAP testing was more responsive to lidocaine analgesia than other tests used, while neuropeptide spinal concentration is an objective quantification method attractive to support and validate different centralized pain functional assessment methods.
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Affiliation(s)
- Colombe Otis
- Groupe de Recherche en Pharmacologie Animale du Québec (GREPAQ), Department of Biomedical Sciences, Faculty of veterinary medicine, Université de Montréal, 1500 des Vétérinaires Street, P.O. Box 5000, St-Hyacinthe, Quebec, J2S 7C6, Canada.,Osteoarthritis Research Unit, Research Center Hospital of Montreal University (CRCHUM), Montreal, Quebec, Canada
| | - Julie Gervais
- Groupe de Recherche en Pharmacologie Animale du Québec (GREPAQ), Department of Biomedical Sciences, Faculty of veterinary medicine, Université de Montréal, 1500 des Vétérinaires Street, P.O. Box 5000, St-Hyacinthe, Quebec, J2S 7C6, Canada
| | - Martin Guillot
- Groupe de Recherche en Pharmacologie Animale du Québec (GREPAQ), Department of Biomedical Sciences, Faculty of veterinary medicine, Université de Montréal, 1500 des Vétérinaires Street, P.O. Box 5000, St-Hyacinthe, Quebec, J2S 7C6, Canada.,Osteoarthritis Research Unit, Research Center Hospital of Montreal University (CRCHUM), Montreal, Quebec, Canada
| | - Julie-Anne Gervais
- Groupe de Recherche en Pharmacologie Animale du Québec (GREPAQ), Department of Biomedical Sciences, Faculty of veterinary medicine, Université de Montréal, 1500 des Vétérinaires Street, P.O. Box 5000, St-Hyacinthe, Quebec, J2S 7C6, Canada
| | - Dominique Gauvin
- Groupe de Recherche en Pharmacologie Animale du Québec (GREPAQ), Department of Biomedical Sciences, Faculty of veterinary medicine, Université de Montréal, 1500 des Vétérinaires Street, P.O. Box 5000, St-Hyacinthe, Quebec, J2S 7C6, Canada.,Osteoarthritis Research Unit, Research Center Hospital of Montreal University (CRCHUM), Montreal, Quebec, Canada
| | - Catherine Péthel
- Groupe de Recherche en Pharmacologie Animale du Québec (GREPAQ), Department of Biomedical Sciences, Faculty of veterinary medicine, Université de Montréal, 1500 des Vétérinaires Street, P.O. Box 5000, St-Hyacinthe, Quebec, J2S 7C6, Canada.,Department of Physiology and Biophysics, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | | | - Marc-André Dansereau
- Department of Physiology and Biophysics, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Philippe Sarret
- Department of Physiology and Biophysics, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Johanne Martel-Pelletier
- Osteoarthritis Research Unit, Research Center Hospital of Montreal University (CRCHUM), Montreal, Quebec, Canada
| | - Jean-Pierre Pelletier
- Osteoarthritis Research Unit, Research Center Hospital of Montreal University (CRCHUM), Montreal, Quebec, Canada
| | - Francis Beaudry
- Groupe de Recherche en Pharmacologie Animale du Québec (GREPAQ), Department of Biomedical Sciences, Faculty of veterinary medicine, Université de Montréal, 1500 des Vétérinaires Street, P.O. Box 5000, St-Hyacinthe, Quebec, J2S 7C6, Canada.,Osteoarthritis Research Unit, Research Center Hospital of Montreal University (CRCHUM), Montreal, Quebec, Canada
| | - Eric Troncy
- Groupe de Recherche en Pharmacologie Animale du Québec (GREPAQ), Department of Biomedical Sciences, Faculty of veterinary medicine, Université de Montréal, 1500 des Vétérinaires Street, P.O. Box 5000, St-Hyacinthe, Quebec, J2S 7C6, Canada. .,Osteoarthritis Research Unit, Research Center Hospital of Montreal University (CRCHUM), Montreal, Quebec, Canada.
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Kuyinu EL, Narayanan G, Nair LS, Laurencin CT. Animal models of osteoarthritis: classification, update, and measurement of outcomes. J Orthop Surg Res 2016; 11:19. [PMID: 26837951 PMCID: PMC4738796 DOI: 10.1186/s13018-016-0346-5] [Citation(s) in RCA: 322] [Impact Index Per Article: 40.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Accepted: 01/11/2016] [Indexed: 12/13/2022] Open
Abstract
Osteoarthritis (OA) is one of the most commonly occurring forms of arthritis in the world today. It is a debilitating chronic illness causing pain and immense discomfort to the affected individual. Significant research is currently ongoing to understand its pathophysiology and develop successful treatment regimens based on this knowledge. Animal models have played a key role in achieving this goal. Animal models currently used to study osteoarthritis can be classified based on the etiology under investigation, primary osteoarthritis, and post-traumatic osteoarthritis, to better clarify the relationship between these models and the pathogenesis of the disease. Non-invasive animal models have shown significant promise in understanding early osteoarthritic changes. Imaging modalities play a pivotal role in understanding the pathogenesis of OA and the correlation with pain. These imaging studies would also allow in vivo surveillance of the disease as a function of time in the animal model. This review summarizes the current understanding of the disease pathogenesis, invasive and non-invasive animal models, imaging modalities, and pain assessment techniques in the animals.
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Affiliation(s)
- Emmanuel L Kuyinu
- Institute for Regenerative Engineering, University of Connecticut Health, Farmington, CT, USA. .,Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences, University of Connecticut Health, Farmington, CT, USA. .,Department of Orthopaedic Surgery, University of Connecticut Health, Farmington, CT, USA.
| | - Ganesh Narayanan
- Institute for Regenerative Engineering, University of Connecticut Health, Farmington, CT, USA. .,Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences, University of Connecticut Health, Farmington, CT, USA. .,Department of Orthopaedic Surgery, University of Connecticut Health, Farmington, CT, USA.
| | - Lakshmi S Nair
- Institute for Regenerative Engineering, University of Connecticut Health, Farmington, CT, USA. .,Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences, University of Connecticut Health, Farmington, CT, USA. .,Department of Orthopaedic Surgery, University of Connecticut Health, Farmington, CT, USA. .,Department of Biomedical Engineering, University of Connecticut, Storrs, CT, USA. .,Department of Materials Science and Engineering, University of Connecticut, Storrs, CT, USA. .,Institute of Materials Science, University of Connecticut, Storrs, CT, USA.
| | - Cato T Laurencin
- Institute for Regenerative Engineering, University of Connecticut Health, Farmington, CT, USA. .,Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences, University of Connecticut Health, Farmington, CT, USA. .,Department of Orthopaedic Surgery, University of Connecticut Health, Farmington, CT, USA. .,Department of Biomedical Engineering, University of Connecticut, Storrs, CT, USA. .,Department of Materials Science and Engineering, University of Connecticut, Storrs, CT, USA. .,Institute of Materials Science, University of Connecticut, Storrs, CT, USA. .,Department of Craniofacial Sciences, School of Dental Medicine, University of Connecticut Health, Farmington, CT, USA. .,Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, CT, USA.
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22
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Ouyang X, Wang J, Hong SD, Xin F, Wang L, Yang XW, Wang JR, Wang LM, Wei BO, Wang Q, Cui WD. Establishment of a rat model for osteoarthritis resulting from anterior cruciate ligament rupture and its significance. Exp Ther Med 2015; 10:2035-2038. [PMID: 26668592 PMCID: PMC4665123 DOI: 10.3892/etm.2015.2775] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 09/11/2015] [Indexed: 01/10/2023] Open
Abstract
The purpose of this study was to examine the establishment of a model concerned with osteoarthritis resulting from the anterior cruciate ligament rupture of rats and investigate the associated mechanism, as well as provide a theoretical basis for clinical treatment of the disease. Forty Sprague-Dawley male rats were randomly divided into two groups of 20 rats each and the anterior cruciate ligament transaction model and knee joint brake model were successfully established. Two rats in the anterior cruciate ligament transection group (10%) and 3 rats in the knee joint brake group (15.0%) died. The survival rate of the two groups was not statistically significant (χ2<0.001, P=1.000). Swelling of the knee joint and synovium of rats in the two experimental groups was aggravated. The Mankin score was significantly higher in the anterior cruciate ligament transection group than that in the experimental group and the difference was statistically significant (P<0.05). By contrast, no significant difference was observed for osteoarthritis severity for the two experimental groups (P>0.05). Analysis of the subgroups showed that the proportion of the anterior cruciate ligament in the experimental group was significantly higher than that of the knee joint brake group, and the difference was statistically significant (P<0.05). By contrast, the difference was not statistically significant in the comparison of the medium and early proportion (P>0.05). The content of protein polysaccharide and II collagen fiber in the experimental group of the anterior cruciate ligament transection was lower than that of the knee joint brake group, and this difference was statistically significant (P<0.05). Thus the mechanism of osteoarthritis may be associated with the decrease in the content of protein and II collagen fibers.
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Affiliation(s)
- Xiao Ouyang
- Department of Orthopedics, Xuzhou Third People's Hospital, Jiangsu University, Xuzhou, Jiangsu 221005, P.R. China
| | - Jian Wang
- Hospital Administration Offices, Xuzhou Third People's Hospital, Jiangsu University, Xuzhou, Jiangsu 221005, P.R. China
| | - Shi Dong Hong
- Department of Orthopedics, Xuzhou Third People's Hospital, Jiangsu University, Xuzhou, Jiangsu 221005, P.R. China
| | - Feng Xin
- Department of Orthopedics, Xuzhou Third People's Hospital, Jiangsu University, Xuzhou, Jiangsu 221005, P.R. China
| | - Lin Wang
- Department of Orthopedics, Xuzhou Third People's Hospital, Jiangsu University, Xuzhou, Jiangsu 221005, P.R. China
| | - Xiao Wei Yang
- Department of Orthopedics, Xuzhou Third People's Hospital, Jiangsu University, Xuzhou, Jiangsu 221005, P.R. China
| | - Jing Rong Wang
- Department of Orthopedics, Xuzhou Third People's Hospital, Jiangsu University, Xuzhou, Jiangsu 221005, P.R. China
| | - Li Ming Wang
- Department of Orthopedics, Xuzhou Third People's Hospital, Jiangsu University, Xuzhou, Jiangsu 221005, P.R. China ; Department of Orthopedics, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu 210006, P.R. China
| | - B O Wei
- Department of Orthopedics, Xuzhou Third People's Hospital, Jiangsu University, Xuzhou, Jiangsu 221005, P.R. China ; Department of Orthopedics, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu 210006, P.R. China
| | - Qing Wang
- Department of Orthopedics, Xuzhou Third People's Hospital, Jiangsu University, Xuzhou, Jiangsu 221005, P.R. China ; Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Wei Ding Cui
- Department of Orthopedics, Xuzhou Third People's Hospital, Jiangsu University, Xuzhou, Jiangsu 221005, P.R. China ; Department of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
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Moreau M, Lussier B, Ballaz L, Troncy E. Kinetic measurements of gait for osteoarthritis research in dogs and cats. THE CANADIAN VETERINARY JOURNAL = LA REVUE VETERINAIRE CANADIENNE 2014; 55:1057-1065. [PMID: 25392548 PMCID: PMC4204836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Over the past 2 decades the measurement of ground reaction forces (GRF) has been extensively used in dogs and cats to gain insights on normal locomotion, discrepancies under pathologic conditions, and biomechanical changes following surgical procedures. Ground reaction forces have become a well-established outcome measure of pain-related functional impairment in animals affected by experimental and naturally occurring osteoarthritis. This paper comprehensively reviews the nature of GRF and presents arguments regarding its measurement in osteoarthritis research.
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Affiliation(s)
- Maxim Moreau
- Address all correspondence to M. Maxim Moreau; e-mail:
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Rialland P, Otis C, Moreau M, Pelletier JP, Martel-Pelletier J, Beaudry F, del Castillo JR, Bertaim T, Gauvin D, Troncy E. Association between sensitisation and pain-related behaviours in an experimental canine model of osteoarthritis. Pain 2014; 155:2071-9. [DOI: 10.1016/j.pain.2014.07.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 06/03/2014] [Accepted: 07/21/2014] [Indexed: 12/20/2022]
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Moreau M, Lussier B, Pelletier JP, Martel-Pelletier J, Bédard C, Gauvin D, Troncy E. A medicinal herb-based natural health product improves the condition of a canine natural osteoarthritis model: a randomized placebo-controlled trial. Res Vet Sci 2014; 97:574-81. [PMID: 25311158 DOI: 10.1016/j.rvsc.2014.09.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 09/12/2014] [Accepted: 09/15/2014] [Indexed: 11/28/2022]
Abstract
An oral herb-based natural health product (NHP) was evaluated in the canine natural osteoarthritis model. At baseline, the peak vertical force (PVF, primary endpoint) and case-specific outcome measure of disability (CSOM) were recorded in privately-owned dogs. Dogs (16/group) were randomized to receive NHP formulations or a negative control. The PVF was measured at week (W) 4 and W8. Daily locomotor activity was recorded using accelerometer. The CSOMs were assessed bi-weekly by the owner. The NHP-treated dogs (n = 13) had higher PVF at W4 (p = 0.020) and W8 (p <0.001) when compared to baseline. The changes at W8 were higher than control dogs (n = 14, p <0.027) and consistent with Cohen's d effect size of 0.7 (95% confidence interval: 0.0-1.5). The NHP-treated dogs had higher locomotor activity at W8 (p = 0.025) when compared to baseline. No significant change was observed for the CSOM. The NHP improved the clinical signs of osteoarthritis in this model.
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Affiliation(s)
- Maxim Moreau
- Research Group in Animal Pharmacology of Quebec (GREPAQ), Department of Veterinary Biomedical Sciences - Faculty of Veterinary Medicine, Université de Montréal, P.O. Box 5000, Saint-Hyacinthe, Quebec J2S 7C6, Canada; Osteoarthritis Research Unit, University of Montreal Hospital Research Centre (CRCHUM), Tour Viger, 900 St-Denis Street, Montreal, Quebec H2X 0A9, Canada
| | - Bertrand Lussier
- Research Group in Animal Pharmacology of Quebec (GREPAQ), Department of Veterinary Biomedical Sciences - Faculty of Veterinary Medicine, Université de Montréal, P.O. Box 5000, Saint-Hyacinthe, Quebec J2S 7C6, Canada; Osteoarthritis Research Unit, University of Montreal Hospital Research Centre (CRCHUM), Tour Viger, 900 St-Denis Street, Montreal, Quebec H2X 0A9, Canada
| | - Jean-Pierre Pelletier
- Osteoarthritis Research Unit, University of Montreal Hospital Research Centre (CRCHUM), Tour Viger, 900 St-Denis Street, Montreal, Quebec H2X 0A9, Canada
| | - Johanne Martel-Pelletier
- Osteoarthritis Research Unit, University of Montreal Hospital Research Centre (CRCHUM), Tour Viger, 900 St-Denis Street, Montreal, Quebec H2X 0A9, Canada
| | - Christian Bédard
- Department of Pathology and Microbiology - Faculty of Veterinary Medicine, Université de Montréal, P.O. Box 5000, Saint-Hyacinthe, Quebec J2S 7C6, Canada
| | - Dominique Gauvin
- Research Group in Animal Pharmacology of Quebec (GREPAQ), Department of Veterinary Biomedical Sciences - Faculty of Veterinary Medicine, Université de Montréal, P.O. Box 5000, Saint-Hyacinthe, Quebec J2S 7C6, Canada; Osteoarthritis Research Unit, University of Montreal Hospital Research Centre (CRCHUM), Tour Viger, 900 St-Denis Street, Montreal, Quebec H2X 0A9, Canada
| | - Eric Troncy
- Research Group in Animal Pharmacology of Quebec (GREPAQ), Department of Veterinary Biomedical Sciences - Faculty of Veterinary Medicine, Université de Montréal, P.O. Box 5000, Saint-Hyacinthe, Quebec J2S 7C6, Canada; Osteoarthritis Research Unit, University of Montreal Hospital Research Centre (CRCHUM), Tour Viger, 900 St-Denis Street, Montreal, Quebec H2X 0A9, Canada.
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Moreau M, Lussier B, Pelletier JP, Troncy E. Does a placebo effect really occur in dogs afflicted by hip osteoarthritis as measured by force platform gait analysis? BMC Vet Res 2013; 9:260. [PMID: 24359688 PMCID: PMC3878098 DOI: 10.1186/1746-6148-9-260] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Accepted: 12/13/2013] [Indexed: 01/24/2023] Open
Abstract
A recent study investigated the therapeutic response of dogs afflicted by hip osteoarthritis when evaluating therapeutic modalities compared to a negative (placebo) control group. Authors suggested a placebo effect based on peak vertical force measurement. In addition, small effect size for each of the tested therapeutics as well as the extremely large sample size needed (>450) to discern therapeutic efficacy using force platform gait analysis were reported. We wish to express our concerns regarding the eligibility criteria used to select the studied cohort, the small effect size, and the placebo effect reported in force platform gait analysis.
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Affiliation(s)
| | | | | | - Eric Troncy
- Osteoarthritis Research Unit, Université de Montréal Hospital Centre, Tour Viger, 900 rue St-Denis, Montreal, Quebec H2X 0A9, Canada.
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