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Enomoto M, de Castro N, Hash J, Thomson A, Nakanishi-Hester A, Perry E, Aker S, Haupt E, Opperman L, Roe S, Cole T, Thompson NA, Innes JF, Lascelles BDX. Prevalence of radiographic appendicular osteoarthritis and associated clinical signs in young dogs. Sci Rep 2024; 14:2827. [PMID: 38310147 PMCID: PMC10838335 DOI: 10.1038/s41598-024-52324-9] [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: 11/08/2023] [Accepted: 01/17/2024] [Indexed: 02/05/2024] Open
Abstract
This study aimed to determine the prevalence of osteoarthritis (OA) and associated clinical signs in young dogs. Owners of dogs aged 8 months-4 years from a single practice, were contacted in random order, to participate in a general health screen. Clinical and orthopedic examinations were performed. Each joint was scored for pain reactions (0-4). Orthogonal radiographs of all joints were made under sedation. Each joint was scored for radiographic OA (rOA) severity on an 11-point scale. Clinical OA (cOA) was defined as an overlap of rOA and joint pain in ≥ 1 joint. Owners completed OA questionnaires. The owners of 123 dogs agreed to participate. Overall, 39.8% (49/123) of dogs had rOA in ≥ 1 joint, and 16.3% (20/123) or 23.6% (29/123) dogs had cOA, depending on the cut-off value of joint pain; moderate (2), or mild (1), respectively. Owners of dogs with cOA observed signs of impairment in approximately 30% of cases. Only 2 dogs with cOA were receiving OA pain management. The most commonly affected joints in descending order of frequency were elbow, hip, tarsus, and stifle. Radiographically visible OA is common in young dogs, and 40-60% of dogs with rOA had cOA. However, OA-pain appears underdiagnosed and undertreated in young dogs.
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Affiliation(s)
- Masataka Enomoto
- Translational Research in Pain Program, Department of Clinical Sciences, College of Veterinary Medicine, Comparative Pain Research and Education Centre, North Carolina State University, Raleigh, NC, USA
| | - Nicholas de Castro
- Translational Research in Pain Program, Department of Clinical Sciences, College of Veterinary Medicine, Comparative Pain Research and Education Centre, North Carolina State University, Raleigh, NC, USA
| | - Jonathan Hash
- Translational Research in Pain Program, Department of Clinical Sciences, College of Veterinary Medicine, Comparative Pain Research and Education Centre, North Carolina State University, Raleigh, NC, USA
| | - Andrea Thomson
- Translational Research in Pain Program, Department of Clinical Sciences, College of Veterinary Medicine, Comparative Pain Research and Education Centre, North Carolina State University, Raleigh, NC, USA
| | - Aoi Nakanishi-Hester
- Translational Research in Pain Program, Department of Clinical Sciences, College of Veterinary Medicine, Comparative Pain Research and Education Centre, North Carolina State University, Raleigh, NC, USA
| | - Erin Perry
- Translational Research in Pain Program, Department of Clinical Sciences, College of Veterinary Medicine, Comparative Pain Research and Education Centre, North Carolina State University, Raleigh, NC, USA
| | - Savannah Aker
- Translational Research in Pain Program, Department of Clinical Sciences, College of Veterinary Medicine, Comparative Pain Research and Education Centre, North Carolina State University, Raleigh, NC, USA
| | - Emily Haupt
- Translational Research in Pain Program, Department of Clinical Sciences, College of Veterinary Medicine, Comparative Pain Research and Education Centre, North Carolina State University, Raleigh, NC, USA
| | - Logan Opperman
- Department of Statistics, North Carolina State University, Raleigh, NC, USA
| | - Simon Roe
- Translational Research in Pain Program, Department of Clinical Sciences, College of Veterinary Medicine, Comparative Pain Research and Education Centre, North Carolina State University, Raleigh, NC, USA
| | - Tracey Cole
- Translational Research in Pain Program, Department of Clinical Sciences, College of Veterinary Medicine, Comparative Pain Research and Education Centre, North Carolina State University, Raleigh, NC, USA
| | | | - J F Innes
- Movement Independent Veterinary Referrals, Cheshire, England, UK
| | - B Duncan X Lascelles
- Translational Research in Pain Program, Department of Clinical Sciences, College of Veterinary Medicine, Comparative Pain Research and Education Centre, North Carolina State University, Raleigh, NC, USA.
- Department of Anesthesiology, Center for Translational Pain Research, Duke University, Durham, NC, USA.
- Thurston Arthritis Center, UNC, Chapel Hill, NC, USA.
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Shilo-Benjamini Y, Lavy E, Yair N, Milgram J, Zilbersheid D, Hod A, Barasch D, Abu Ahmad W, Cern A, Barenholz Y. Therapeutic efficacy and pharmacokinetics of liposomal-cannabidiol injection: a pilot clinical study in dogs with naturally-occurring osteoarthritis. Front Vet Sci 2023; 10:1224452. [PMID: 37680386 PMCID: PMC10481162 DOI: 10.3389/fvets.2023.1224452] [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: 05/17/2023] [Accepted: 08/07/2023] [Indexed: 09/09/2023] Open
Abstract
Introduction Osteoarthritis is a common disease in dogs resulting in chronic pain and decreased wellbeing. Common analgesics such as non-steroidal anti-inflammatories may fail to control pain and can produce major adverse effects. Study objectives were to evaluate pharmacokinetics, therapeutic efficacy, and safety of subcutaneous liposomal-cannabidiol (CBD) as an additional analgesic therapy in dogs suffering from naturally-occurring osteoarthritis. Methods Six such dogs were recruited following ethics approval and owner consent. Dogs were administered a single subcutaneous injection of 5 mg/kg liposomal-CBD. Plasma concentrations of CBD, blood work, activity monitoring collar data, wellbeing questionnaire (owners) and pain scoring (veterinarian) were performed at baseline and monitored up to six weeks following intervention. Data overtime were compared with baseline using linear-regression mixed-effects. P-value was set at 0.05. Results CBD plasma concentrations were observed for 6 weeks; median (range) peak plasma concentration (Cmax) was 45.2 (17.8-72.5) ng/mL, time to Cmax was 4 (2-14) days and half-life was 12.4 (7.7-42.6) days. Median (range) collar activity score was significantly increased on weeks 5-6; from 29 (17-34) to 34 (21-38). Scores of wellbeing and pain evaluations were significantly improved at 2-3 weeks; from 69 (52-78) to 53.5 (41-68), and from 7.5 (6-8) to 5.5 (5-7), respectively. The main adverse effect was minor local swelling for several days in 5/6 dogs. Conclusion Liposomal-CBD administered subcutaneously produced detectable CBD plasma concentrations for 6 weeks with minimal side effects and demonstrated reduced pain and increased wellbeing as part of multimodal pain management in dogs suffering from osteoarthritis. Further placebo-controlled studies are of interest.
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Affiliation(s)
- Yael Shilo-Benjamini
- Department of Biochemistry, Hadassah Medical School, Laboratory of Membrane and Liposome Research, The Hebrew University of Jerusalem, Jerusalem, Israel
- Koret School of Veterinary Medicine, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Eran Lavy
- Koret School of Veterinary Medicine, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Nadav Yair
- Koret School of Veterinary Medicine, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Joshua Milgram
- Koret School of Veterinary Medicine, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Daniel Zilbersheid
- Department of Biochemistry, Hadassah Medical School, Laboratory of Membrane and Liposome Research, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Atara Hod
- Department of Biochemistry, Hadassah Medical School, Laboratory of Membrane and Liposome Research, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Dinorah Barasch
- The Mass Spectrometry Unit, School of Pharmacy, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Wiessam Abu Ahmad
- Hadassah Medical Center, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Ahuva Cern
- Department of Biochemistry, Hadassah Medical School, Laboratory of Membrane and Liposome Research, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Yechezkel Barenholz
- Department of Biochemistry, Hadassah Medical School, Laboratory of Membrane and Liposome Research, The Hebrew University of Jerusalem, Jerusalem, Israel
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Vitt MA, Rendahl A, Pracht SE, Knotek BM, Lascelles BDX, Gordon-Evans W, Conzemius MG. Nine-axis inertial measurement unit output discriminates activities of varying intensity in the dog. Am J Vet Res 2023; 84:ajvr.22.10.0178. [PMID: 36652333 DOI: 10.2460/ajvr.22.10.0178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 12/30/2022] [Indexed: 01/19/2023]
Abstract
OBJECTIVE To explore relationships between 9-axis inertial measurement unit (IMU) output and activities of varying intensity in dogs of various sizes. ANIMALS 20 healthy, agility course-trained dogs of various ages and sizes. PROCEDURES Height, weight, body condition score, age, length from IMU to the ischium, and height of IMU to the floor were recorded. Dogs performed a series of activities (rest, walk, trot, and agility course) while wearing the IMU device. IMU and video output were reviewed by independent investigators. Correlations and multiple regression models were used to explore relationships between independent variables and IMU output. RESULTS Calibration demonstrated excellent correlation and concordance between IMUs (intraclass correlation > 0.9) and that the IMUs reliably measured a known acceleration (gravity at rest). Resultant vector magnitude {sqrt[(x^2) + (y^2) + (z^2)]} normalized to body size was calculated from the data. IMU output clearly discriminates between activities of varying intensity in the dog. CLINICAL RELEVANCE The inability to accurately measure chronic pain is a barrier to the development of new, or critical evaluation of, therapeutics. Activity monitors (AM) may be the ideal diagnostic target since they are small and provide objective data that can be collected while the pet remains in its natural environment. These results demonstrate the concurrent and predictive validity of the IMU tested. Our long-range goal is to validate an open-source algorithm for the IMU so activity in a pet's natural environment can be used as an outcome measure in future studies.
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Affiliation(s)
- Molly A Vitt
- Department of Veterinary Clinical Sciences, College Veterinary Medicine, University of Minnesota, Saint Paul, MN
| | - Aaron Rendahl
- Department of Veterinary Clinical Sciences, College Veterinary Medicine, University of Minnesota, Saint Paul, MN
| | - Sara E Pracht
- Department of Veterinary Clinical Sciences, College Veterinary Medicine, University of Minnesota, Saint Paul, MN
| | | | - B Duncan X Lascelles
- Translational Research in Pain, Comparative Pain Research and Education Centre, Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC
| | - Wanda Gordon-Evans
- Department of Veterinary Clinical Sciences, College Veterinary Medicine, University of Minnesota, Saint Paul, MN
| | - Michael G Conzemius
- Department of Veterinary Clinical Sciences, College Veterinary Medicine, University of Minnesota, Saint Paul, MN
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Layton R, Layton D, Beggs D, Fisher A, Mansell P, Stanger KJ. The impact of stress and anesthesia on animal models of infectious disease. Front Vet Sci 2023; 10:1086003. [PMID: 36816193 PMCID: PMC9933909 DOI: 10.3389/fvets.2023.1086003] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 01/09/2023] [Indexed: 02/05/2023] Open
Abstract
Stress and general anesthesia have an impact on the functional response of the organism due to the detrimental effects on cardiovascular, immunological, and metabolic function, which could limit the organism's response to an infectious event. Animal studies have formed an essential step in understanding and mitigating infectious diseases, as the complexities of physiology and immunity cannot yet be replicated in vivo. Using animals in research continues to come under increasing societal scrutiny, and it is therefore crucial that the welfare of animals used in disease research is optimized to meet both societal expectations and improve scientific outcomes. Everyday management and procedures in animal studies are known to cause stress, which can not only cause poorer welfare outcomes, but also introduces variables in disease studies. Whilst general anesthesia is necessary at times to reduce stress and enhance animal welfare in disease research, evidence of physiological and immunological disruption caused by general anesthesia is increasing. To better understand and quantify the effects of stress and anesthesia on disease study and welfare outcomes, utilizing the most appropriate animal monitoring strategies is imperative. This article aims to analyze recent scientific evidence about the impact of stress and anesthesia as uncontrolled variables, as well as reviewing monitoring strategies and technologies in animal models during infectious diseases.
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Affiliation(s)
- Rachel Layton
- Australian Centre for Disease Preparedness, CSIRO, Geelong, VIC, Australia,*Correspondence: Rachel Layton ✉
| | - Daniel Layton
- Australian Centre for Disease Preparedness, CSIRO, Geelong, VIC, Australia
| | - David Beggs
- Faculty of Veterinary and Agricultural Sciences, Melbourne Veterinary School, University of Melbourne, Melbourne, VIC, Australia
| | - Andrew Fisher
- Faculty of Veterinary and Agricultural Sciences, Melbourne Veterinary School, University of Melbourne, Melbourne, VIC, Australia
| | - Peter Mansell
- Faculty of Veterinary and Agricultural Sciences, Melbourne Veterinary School, University of Melbourne, Melbourne, VIC, Australia
| | - Kelly J. Stanger
- Australian Centre for Disease Preparedness, CSIRO, Geelong, VIC, Australia
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