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Giraudeau M, Vincze O, Dupont SM, Sepp T, Baines C, Lemaitre JF, Lemberger K, Gentès S, Boddy A, Dujon AM, Bramwell G, Harris V, Ujvari B, Alix-Panabières C, Lair S, Sayag D, Conde DA, Colchero F, Harrison TM, Pavard S, Padilla-Morales B, Chevallier D, Hamede R, Roche B, Malkocs T, Aktipis AC, Maley C, DeGregori J, Le Loc'h G, Thomas F. Approaches and methods to study wildlife cancer. J Anim Ecol 2024; 93:1410-1428. [PMID: 39189422 DOI: 10.1111/1365-2656.14144] [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: 12/05/2023] [Accepted: 04/23/2024] [Indexed: 08/28/2024]
Abstract
The last few years have seen a surge of interest from field ecologists and evolutionary biologists to study neoplasia and cancer in wildlife. This contributes to the One Health Approach, which investigates health issues at the intersection of people, wild and domestic animals, together with their changing environments. Nonetheless, the emerging field of wildlife cancer is currently constrained by methodological limitations in detecting cancer using non-invasive sampling. In addition, the suspected differential susceptibility and resistance of species to cancer often make the choice of a unique model species difficult for field biologists. Here, we provide an overview of the importance of pursuing the study of cancer in non-model organisms and we review the currently available methods to detect, measure and quantify cancer in the wild, as well as the methodological limitations to be overcome to develop novel approaches inspired by diagnostic techniques used in human medicine. The methodology we propose here will help understand and hopefully fight this major disease by generating general knowledge about cancer, variation in its rates, tumour-suppressor mechanisms across species as well as its link to life history and physiological characters. Moreover, this is expected to provide key information about cancer in wildlife, which is a top priority due to the accelerated anthropogenic change in the past decades that might favour cancer progression in wild populations.
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Affiliation(s)
- Mathieu Giraudeau
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS-La Rochelle Université, La Rochelle, France
| | - Orsolya Vincze
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS-La Rochelle Université, La Rochelle, France
- ImmunoConcEpT, CNRS UMR 5164, University of Bordeaux, Bordeaux, France
- Hungarian Department of Biology and Ecology, Evolutionary Ecology Group, Babeş-Bolyai University, Cluj-Napoca, Romania
- HUN-REN-DE Conservation Biology Research Group, Debrecen, Hungary
| | - Sophie M Dupont
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS-La Rochelle Université, La Rochelle, France
- Laboratoire de Biologie des ORganismes et Ecosystèmes Aquatiques (BOREA), FRE 2030, Muséum National d'Histoire Naturelle, CNRS, IRD, Sorbonne Université, Université de Caen Normandie, Université des Antilles, Paris, France
| | - Tuul Sepp
- Institute of Ecology and Earth Sciences, University of Tartu, Tartu, Estonia
| | - Ciara Baines
- Department of Biological Sciences, University of Leeds, Leeds, United Kingdom
| | - Jean-Francois Lemaitre
- Laboratoire de Biométrie et Biologie Évolutive, CNRS, UMR5558, Université Lyon 1, Villeurbanne, France
| | | | - Sophie Gentès
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS-La Rochelle Université, La Rochelle, France
| | - Amy Boddy
- Department of Anthropology, University of California Santa Barbara, Santa Barbara, California, USA
| | - Antoine M Dujon
- School of Life and Environmental Sciences, Deakin University, Waurn Ponds, Victoria, Australia
- CREEC/CANECEV, MIVEGEC, Unité Mixte de Recherches, IRD 224-CNRS5290-Université de Montpellier, Montpellier, France
| | - Georgina Bramwell
- School of Life and Environmental Sciences, Deakin University, Waurn Ponds, Victoria, Australia
| | - Valerie Harris
- Arizona Cancer Evolution Center, Biodesign Institute, Arizona State University, Tempe, Arizona, USA
| | - Beata Ujvari
- School of Life and Environmental Sciences, Deakin University, Waurn Ponds, Victoria, Australia
- Centre de Recherches Ecologiques et Evolutives sur le Cancer, Montpellier, France
| | - Catherine Alix-Panabières
- Laboratory of Rare Human Circulating Cells (LCCRH), University Medical Centre of Montpellier, Montpellier, France
| | - Stephane Lair
- Faculté de médecine vétérinaire, Canadian Wildlife Health Cooperative/Centre québécois sur la santé des animaux sauvages, Université de Montréal, Saint-Hyacinthe, Quebec, Canada
| | - David Sayag
- ONCOnseil-Unité d'expertise en oncologie vétérinaire, Toulouse, France
| | - Dalia A Conde
- Department of Biology, University of Southern Denmark, Odense M, Denmark
- Interdisciplinary Centre on Population Dynamics, University of Southern Denmark, Odense M, Denmark
| | - Fernando Colchero
- Interdisciplinary Centre on Population Dynamics, University of Southern Denmark, Odense M, Denmark
- Department of Primate Behavior and Evolution, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
- Department of Mathematics and Computer Sciences, University of Southern Denmark, Odense M, Denmark
| | - Tara M Harrison
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, USA
| | - Samuel Pavard
- Unité Eco-Anthropologie (EA), Muséum National d'Histoire Naturelle, CNRS 7206, Université Paris Cité, Paris, France
| | - Benjamin Padilla-Morales
- Department of Biology and Biochemistry, Milner Centre for Evolution, University of Bath, Bath, UK
| | - Damien Chevallier
- Laboratoire de Biologie des ORganismes et Ecosystèmes Aquatiques (BOREA), FRE 2030, Muséum National d'Histoire Naturelle, CNRS, IRD, Sorbonne Université, Université de Caen Normandie, Université des Antilles, Paris, France
| | - Rodrigo Hamede
- Centre de Recherches Ecologiques et Evolutives sur le Cancer, Montpellier, France
- School of Natural Sciences, University of Tasmania, Hobart, Tasmania, Australia
| | - Benjamin Roche
- CREEC/CANECEV, MIVEGEC, Unité Mixte de Recherches, IRD 224-CNRS5290-Université de Montpellier, Montpellier, France
- Centre de Recherche en Écologie et Évolution de la Santé (CREES), Montpellier, France
- Departamento de Etología, Fauna Silvestre y Animales de Laboratorio, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México (UNAM), Ciudad de México, Mexico
| | - Tamas Malkocs
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS-La Rochelle Université, La Rochelle, France
- Univ Brest, CNRS, IRD, Ifremer, LEMAR, IUEM, Plouzane, France
| | - Athena C Aktipis
- Arizona Cancer Evolution Center, Biodesign Institute, Arizona State University, Tempe, Arizona, USA
- Department of Psychology, Arizona State University, Tempe, Arizona, USA
| | - Carlo Maley
- Arizona Cancer Evolution Center, Biodesign Institute, Arizona State University, Tempe, Arizona, USA
| | - James DeGregori
- Department of Biochemistry and Molecular Genetics, University of Colorado School of Medicine, Aurora, Colorado, USA
| | | | - Frédéric Thomas
- CREEC/CANECEV, MIVEGEC, Unité Mixte de Recherches, IRD 224-CNRS5290-Université de Montpellier, Montpellier, France
- Centre de Recherche en Écologie et Évolution de la Santé (CREES), Montpellier, France
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2
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Lee CH, Wang SL. Oral mirtazapine decreases the gastrointestinal adverse effects in cats on doxorubicin chemotherapy. Vet J 2024; 304:106087. [PMID: 38395251 DOI: 10.1016/j.tvjl.2024.106087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 01/22/2024] [Accepted: 02/20/2024] [Indexed: 02/25/2024]
Abstract
Anorexia, depression, and vomiting are the common adverse effects of chemotherapy in humans and animals. Mirtazapine is primarily used as an appetite stimulant and antiemetic in dogs and cats. Therefore, we evaluated the efficacy of mirtazapine in reducing the gastrointestinal adverse effects in cats receiving doxorubicin chemotherapy. This single-masked, placebo-controlled crossover study enrolled 11 cats with malignant mammary gland tumors. The cats were randomly assigned to receive either mirtazapine (1.88 mg/cat) or placebo every 48 h for 2 weeks from the first initiation of doxorubicin chemotherapy. Each cat was then crossed over to the alternate group on the subsequent chemotherapy with a 1-week wash-out period. The owners were asked to record appetite score, activity score, episodes of vomiting and diarrhea for 2 weeks after each doxorubicin administration. Cats treated with mirtazapine showed significantly increased bodyweight compared with those on placebo (P = 0.010). The appetite and activity scores during mirtazapine treatment was significantly higher than those during placebo treatment (P = 0.005 and 0.018, respectively). Furthermore, the prevalence of episodes of vomiting during mirtazapine treatment was significantly lower than that during placebo treatment (P = 0.026). Our results demonstrate that mirtazapine can significantly increase bodyweight, appetite, and activity and reduce vomiting in cats after doxorubicin chemotherapy.
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Affiliation(s)
- C H Lee
- Graduate Institute of Veterinary Clinical Sciences, School of Veterinary Medicine, National Taiwan University, Taipei 10617, Taiwan
| | - S L Wang
- Graduate Institute of Veterinary Clinical Sciences, School of Veterinary Medicine, National Taiwan University, Taipei 10617, Taiwan; National Taiwan University Veterinary Hospital, National Taiwan University, Taipei 10617, Taiwan.
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3
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Leung YB, Cave N, Wester TJ. Loss of body weight and lean mass in long-stay, hospitalized canine patients. J Anim Physiol Anim Nutr (Berl) 2023; 107:1444-1455. [PMID: 37246960 DOI: 10.1111/jpn.13833] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 02/28/2023] [Accepted: 05/03/2023] [Indexed: 05/30/2023]
Abstract
A high prevalence of malnutrition occurs in human hospitals and has been associated with detrimental consequences. By comparison, much less is known in hospitalized veterinary patients. The aims of this study were to evaluate the prevalence of malnutrition and body composition changes in long-stay hospitalised patients using an isotopic dilution technique. An additional objective was to compare the changes in composition with commonly used methods measuring body fat and lean mass. The dogs consumed on average 77.5% of their estimated resting energy requirements during their stay. The majority (78.3%) of dogs lost body weight, of which a greater proportion was lean mass (61.8%) than fat mass (FM) (38.2%). There was a moderate correlation between body condition score and percentage FM measured at admission (Kendall's τ = 0.51; p = 0.002), and at discharge (Kendall's τ = 0.55; p = 0.001). However, there was no correlation between muscle condition score and fat-free mass at either admission or discharge (p > 0.1). Duration of stay was positively associated with loss of body weight (p < 0.001), but was not associated with changes in either lean or FM expressed as a percentage of body weight or in absolute terms (p > 0.1), which was presumed to be explained by small sample size and variation. Food intake was not found to a significant factor for lean or FM loss (p > 0.1). These findings indicate that weight loss is common in hospitalized canine patients, which is not explained by simple under-eating. Other factors such as inflammation and inactivity should be evaluated in future studies to determine their role in influencing muscle and FM changes in hospitalized canine patients.
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Affiliation(s)
- Y Becca Leung
- School of Veterinary Science, Massey University, Palmerston North, New Zealand
| | - Nick Cave
- School of Veterinary Science, Massey University, Palmerston North, New Zealand
| | - Timothy J Wester
- School of Agriculture and Environment, Massey University, Palmerston North, New Zealand
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Bennett P, Williamson P, Taylor R. Review of Canine Lymphoma Treated with Chemotherapy-Outcomes and Prognostic Factors. Vet Sci 2023; 10:vetsci10050342. [PMID: 37235425 DOI: 10.3390/vetsci10050342] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 05/09/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
While canine lymphoma is a relatively common and important disease seen by veterinarians, there are limited comprehensive reviews of the literature regarding the remission and survival times following chemotherapy, and the associated prognostic factors. This comprehensive thematic review covers the available veterinary literature covering treatment outcomes and identified prognostic factors. A lack of standardised approaches to evaluate and report the outcomes was identified, including factors that would alter the duration of responses by weeks, or occasionally months. After publication of the suggested reporting criteria, this has improved but is still not uniformly applied. The prognostic factors included for evaluation varied from as few as three to seventeen, with over 50 studies using only univariate analysis. Individual papers reported much longer outcomes than others, but assessing the outcomes overall, there has been minimal change over the last 40 years. This supports the belief that novel approaches for lymphoma therapy will be required to substantively improve outcomes.
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Affiliation(s)
- Peter Bennett
- The Sydney School of Veterinary Science, Faculty of Science, The University of Sydney, Camperdown, NSW 2006, Australia
- The University of Sydney Nano Institute, The University of Sydney, Camperdown, NSW 2006, Australia
| | - Peter Williamson
- The Sydney School of Veterinary Science, Faculty of Science, The University of Sydney, Camperdown, NSW 2006, Australia
| | - Rosanne Taylor
- The Sydney School of Veterinary Science, Faculty of Science, The University of Sydney, Camperdown, NSW 2006, Australia
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Acceptance of a Novel, Highly Palatable, Calorically Dense, and Nutritionally Complete Diet in Dogs with Benign and Malignant Tumors. Vet Sci 2023; 10:vetsci10020148. [PMID: 36851452 PMCID: PMC9961485 DOI: 10.3390/vetsci10020148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 02/07/2023] [Accepted: 02/07/2023] [Indexed: 02/15/2023] Open
Abstract
Diminished appetite and poor eating behavior accompanied by weight loss or cachexia are often reported in dogs living with cancer. This study was conducted to determine the acceptance and eating enthusiasm in dogs with cancer for a new therapeutic, nutritionally balanced, and calorically dense food designed for dogs with cancer. Adult dogs with diagnosis of cancer were recruited from general and oncology practices and were fed the study food for 28 days. Evaluations included physical examination, body weight, food intake, caloric intake, hematology and serum biochemistry, and owner assessments, namely food evaluation, quality of life, and stool scores. The dogs transitioned smoothly and tolerated the food very well. The results showed high food acceptance within the first day, with continued eating enthusiasm over the 28 days. Significant increases in food and caloric intake were observed, with the study food having a positive impact on body weight in dogs that were losing weight and helping to maintain a high quality of life. Blood laboratory parameters remained within reference ranges. Thus, the therapeutic study food was well accepted and efficacious in supporting continued eating and required caloric intake, promoting a healthy weight gain and maintaining a high quality of life in dogs with cancer.
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Williams K, Parker S, MacDonald-Dickinson V. Risk factors for appendicular osteosarcoma occurrence in large and giant breed dogs in western Canada. THE CANADIAN VETERINARY JOURNAL = LA REVUE VETERINAIRE CANADIENNE 2023; 64:167-173. [PMID: 36733647 PMCID: PMC9847425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Objective Risk factors for the development of canine appendicular osteosarcoma (OSA) have been investigated in numerous studies, but with contradictory results. The aim of this study was to analyze weight, age, breed, sex, neuter status, body condition score, and previous lameness in a population of large and giant breed dogs in western Canada with and without appendicular OSA. Animals and procedure Medical records of 227 large or giant breed dogs diagnosed with appendicular OSA were compared to records from a control population of 454 large and giant breed dogs from the years 2000 to 2020. Results Gonadectomized dogs, body condition score (BCS), and a history of lameness condition(s) (other than OSA) were associated with increased odds for presentation with OSA. Breeds shown to have increased odds for appendicular OSA occurrence included Rottweilers and Great Danes relative to Labrador retrievers. Conclusion and clinical relevance Obesity and lameness appear to be independently associated with appendicular osteosarcoma. This study demonstrated that spayed females had the greatest risk compared to other sex and neuter status combinations; further investigation of these factors would be beneficial.
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Marchi PH, Vendramini THA, Perini MP, Zafalon RVA, Amaral AR, Ochamotto VA, Da Silveira JC, Dagli MLZ, Brunetto MA. Obesity, inflammation, and cancer in dogs: Review and perspectives. Front Vet Sci 2022; 9:1004122. [PMID: 36262532 PMCID: PMC9573962 DOI: 10.3389/fvets.2022.1004122] [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: 07/26/2022] [Accepted: 08/31/2022] [Indexed: 11/13/2022] Open
Abstract
Obesity is the most common nutritional disease in dogs, and its prevalence has increased in recent decades. Several countries have demonstrated a prevalence of obesity in dogs similar to that observed in humans. Chronic low-grade inflammation is a prominent basis used to explain how obesity results in numerous negative health consequences. This is well known and understood, and recent studies have pointed to the association between obesity and predisposition to specific types of cancers and their complications. Such elucidations are important because, like obesity, the prevalence of cancer in dogs has increased in recent decades, establishing cancer as a significant cause of death for these animals. In the same way, intensive advances in technology in the field of human and veterinary medicine (which even proposes the use of animal models) have optimized existing therapeutic methods, led to the development of innovative treatments, and shortened the time to diagnosis of cancer. Despite the great challenges, this review aims to highlight the evidence obtained to date on the association between obesity, inflammation, and cancer in dogs, and the possible pathophysiological mechanisms that link obesity and carcinogenesis. The potential to control cancer in animals using existing knowledge is also presented.
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Affiliation(s)
- Pedro H. Marchi
- Pet Nutrology Research Center, Department of Animal Nutrition and Production of the School of Veterinary Medicine and Animal Science, University of São Paulo, Pirassununga, Brazil
| | - Thiago H. A. Vendramini
- Pet Nutrology Research Center, Department of Animal Nutrition and Production of the School of Veterinary Medicine and Animal Science, University of São Paulo, Pirassununga, Brazil
| | - Mariana P. Perini
- Pet Nutrology Research Center, Department of Animal Nutrition and Production of the School of Veterinary Medicine and Animal Science, University of São Paulo, Pirassununga, Brazil
| | - Rafael V. A. Zafalon
- Pet Nutrology Research Center, Department of Animal Nutrition and Production of the School of Veterinary Medicine and Animal Science, University of São Paulo, Pirassununga, Brazil
| | - Andressa R. Amaral
- Veterinary Nutrology Service, Veterinary Teaching Hospital of the School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | - Vanessa A. Ochamotto
- Pet Nutrology Research Center, Department of Animal Nutrition and Production of the School of Veterinary Medicine and Animal Science, University of São Paulo, Pirassununga, Brazil
| | - Juliano C. Da Silveira
- Laboratory of Molecular, Morphophysiology and Development (LMMD), Department of Veterinary Medicine, Faculty of Animal Science and Food Engineering, University of São Paulo, Pirassununga, Brazil
| | - Maria L. Z. Dagli
- Laboratory of Experimental and Comparative Oncology, Department of Pathology, School of Veterinary Medicine and Animal Science of the University of São Paulo, São Paulo, Brazil
| | - Marcio A. Brunetto
- Pet Nutrology Research Center, Department of Animal Nutrition and Production of the School of Veterinary Medicine and Animal Science, University of São Paulo, Pirassununga, Brazil,Veterinary Nutrology Service, Veterinary Teaching Hospital of the School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil,*Correspondence: Marcio A. Brunetto
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8
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García San José P, Arenas Bermejo C, Alonso-Miguel D, González Sanz S, Clares Moral I, Portero Fuentes M, Pérez-Alenza MD. Survival of dogs with pituitary-dependent hyperadrenocorticism treated twice daily with low doses of trilostane. Vet Rec 2022; 191:e1630. [PMID: 35460587 DOI: 10.1002/vetr.1630] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 01/06/2022] [Accepted: 03/15/2022] [Indexed: 11/10/2022]
Abstract
BACKGROUND Twice daily low trilostane doses have proven to be effective to manage canine Cushing's syndrome. However, survival and prognostic factors in dogs treated with this protocol have not been evaluated. The aim of the study was to evaluate survival and prognostic factors, including systolic blood pressure (SBP) at diagnosis, in dogs with pituitary-dependent hypercortisolism (PDH) treated with low trilostane doses. METHODS Medical records of 91 dogs newly diagnosed with PDH initially treated with 0.2-1.1 mg/kg of trilostane twice daily were retrospectively included. Survival times were calculated using the Kaplan-Meier estimator. Univariable and multivariable analysis were performed using the Cox proportional hazard regression analysis. RESULTS Overall, median survival was 998 days (range 26-1832 days, 95% confidence interval = 755-1241 days). In the multivariable analysis, age (hazard ratio [HR] = 1.337, p < 0.001), presence of calcinosis cutis (HR = 5.271, p < 0.001), body condition score (BCS) ≤3/9 (HR = 8.100, p < 0.001) and higher platelet count (HR = 1.002, p = 0.022) were negatively correlated with survival. SBP was not associated with survival. CONCLUSIONS Low-dose trilostane treatment twice daily provides slightly longer survival than previously reported for dogs with PDH treated once or twice daily at higher doses. Older age, presence of calcinosis cutis, low BCS and higher platelet count, but not systemic hypertension, are predictive of poorer prognosis in dogs with PDH.
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Affiliation(s)
- Paula García San José
- Department of Small Animal Medicine and Surgery, Veterinary School, Complutense University of Madrid, Madrid, Spain
| | | | - Daniel Alonso-Miguel
- Department of Small Animal Medicine and Surgery, Veterinary School, Complutense University of Madrid, Madrid, Spain
| | | | | | - Miriam Portero Fuentes
- Department of Small Animal Medicine and Surgery, Veterinary School, Complutense University of Madrid, Madrid, Spain
| | - María Dolores Pérez-Alenza
- Department of Small Animal Medicine and Surgery, Veterinary School, Complutense University of Madrid, Madrid, Spain
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Koo J, Choi K, Lee P, Polley A, Pudupakam RS, Tsang J, Fernandez E, Han EJ, Park S, Swartzfager D, Qi NSX, Jung M, Ocnean M, Kim HU, Lim S. Predicting Dynamic Clinical Outcomes of the Chemotherapy for Canine Lymphoma Patients Using a Machine Learning Model. Vet Sci 2021; 8:vetsci8120301. [PMID: 34941828 PMCID: PMC8704313 DOI: 10.3390/vetsci8120301] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 11/25/2021] [Accepted: 11/26/2021] [Indexed: 11/16/2022] Open
Abstract
First-line treatments of cancer do not always work, and even when they do, they cure the disease at unequal rates mostly owing to biological and clinical heterogeneity across patients. Accurate prediction of clinical outcome and survival following the treatment can support and expedite the process of comparing alternative treatments. We describe the methodology to dynamically determine remission probabilities for individual patients, as well as their prospects of progression-free survival (PFS). The proposed methodology utilizes the ex vivo drug sensitivity of cancer cells, their immunophenotyping results, and patient information, such as age and breed, in training machine learning (ML) models, as well as the Cox hazards model to predict the probability of clinical remission (CR) or relapse across time for a given patient. We applied the methodology using the three types of data obtained from 242 canine lymphoma patients treated by (L)-CHOP chemotherapy. The results demonstrate substantial enhancement in the predictive accuracy of the ML models by utilizing features from all the three types of data. They also highlight superior performance and utility in predicting survival compared to the conventional stratification method. We believe that the proposed methodology can contribute to improving and personalizing the care of cancer patients.
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Affiliation(s)
- Jamin Koo
- ImpriMed, Inc., 4030 Fabian Way, Palo Alto, CA 94303, USA or (J.K.); (P.L.); (A.P.); (R.S.P.); (J.T.); (E.F.); (E.J.H.); (S.P.); (D.S.); (N.S.X.Q.); (M.J.); (M.O.)
- ImpriMedKorea, Inc., Seoul Startup Hub, Seoul 04147, Korea;
- Department of Chemical Engineering, Hongik University, Seoul 04066, Korea
| | - Kyucheol Choi
- ImpriMedKorea, Inc., Seoul Startup Hub, Seoul 04147, Korea;
| | - Peter Lee
- ImpriMed, Inc., 4030 Fabian Way, Palo Alto, CA 94303, USA or (J.K.); (P.L.); (A.P.); (R.S.P.); (J.T.); (E.F.); (E.J.H.); (S.P.); (D.S.); (N.S.X.Q.); (M.J.); (M.O.)
| | - Amanda Polley
- ImpriMed, Inc., 4030 Fabian Way, Palo Alto, CA 94303, USA or (J.K.); (P.L.); (A.P.); (R.S.P.); (J.T.); (E.F.); (E.J.H.); (S.P.); (D.S.); (N.S.X.Q.); (M.J.); (M.O.)
| | - Raghavendra Sumanth Pudupakam
- ImpriMed, Inc., 4030 Fabian Way, Palo Alto, CA 94303, USA or (J.K.); (P.L.); (A.P.); (R.S.P.); (J.T.); (E.F.); (E.J.H.); (S.P.); (D.S.); (N.S.X.Q.); (M.J.); (M.O.)
| | - Josephine Tsang
- ImpriMed, Inc., 4030 Fabian Way, Palo Alto, CA 94303, USA or (J.K.); (P.L.); (A.P.); (R.S.P.); (J.T.); (E.F.); (E.J.H.); (S.P.); (D.S.); (N.S.X.Q.); (M.J.); (M.O.)
| | - Elmer Fernandez
- ImpriMed, Inc., 4030 Fabian Way, Palo Alto, CA 94303, USA or (J.K.); (P.L.); (A.P.); (R.S.P.); (J.T.); (E.F.); (E.J.H.); (S.P.); (D.S.); (N.S.X.Q.); (M.J.); (M.O.)
| | - Enyang James Han
- ImpriMed, Inc., 4030 Fabian Way, Palo Alto, CA 94303, USA or (J.K.); (P.L.); (A.P.); (R.S.P.); (J.T.); (E.F.); (E.J.H.); (S.P.); (D.S.); (N.S.X.Q.); (M.J.); (M.O.)
| | - Stanley Park
- ImpriMed, Inc., 4030 Fabian Way, Palo Alto, CA 94303, USA or (J.K.); (P.L.); (A.P.); (R.S.P.); (J.T.); (E.F.); (E.J.H.); (S.P.); (D.S.); (N.S.X.Q.); (M.J.); (M.O.)
| | - Deanna Swartzfager
- ImpriMed, Inc., 4030 Fabian Way, Palo Alto, CA 94303, USA or (J.K.); (P.L.); (A.P.); (R.S.P.); (J.T.); (E.F.); (E.J.H.); (S.P.); (D.S.); (N.S.X.Q.); (M.J.); (M.O.)
| | - Nicholas Seah Xi Qi
- ImpriMed, Inc., 4030 Fabian Way, Palo Alto, CA 94303, USA or (J.K.); (P.L.); (A.P.); (R.S.P.); (J.T.); (E.F.); (E.J.H.); (S.P.); (D.S.); (N.S.X.Q.); (M.J.); (M.O.)
| | - Melody Jung
- ImpriMed, Inc., 4030 Fabian Way, Palo Alto, CA 94303, USA or (J.K.); (P.L.); (A.P.); (R.S.P.); (J.T.); (E.F.); (E.J.H.); (S.P.); (D.S.); (N.S.X.Q.); (M.J.); (M.O.)
| | - Mary Ocnean
- ImpriMed, Inc., 4030 Fabian Way, Palo Alto, CA 94303, USA or (J.K.); (P.L.); (A.P.); (R.S.P.); (J.T.); (E.F.); (E.J.H.); (S.P.); (D.S.); (N.S.X.Q.); (M.J.); (M.O.)
| | - Hyun Uk Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea;
| | - Sungwon Lim
- ImpriMed, Inc., 4030 Fabian Way, Palo Alto, CA 94303, USA or (J.K.); (P.L.); (A.P.); (R.S.P.); (J.T.); (E.F.); (E.J.H.); (S.P.); (D.S.); (N.S.X.Q.); (M.J.); (M.O.)
- ImpriMedKorea, Inc., Seoul Startup Hub, Seoul 04147, Korea;
- Correspondence:
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10
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Park M, Kim KH, Jaiswal V, Choi J, Chun JL, Seo KM, Lee MJ, Lee HJ. Effect of black ginseng and silkworm supplementation on obesity, the transcriptome, and the gut microbiome of diet-induced overweight dogs. Sci Rep 2021; 11:16334. [PMID: 34381138 PMCID: PMC8358025 DOI: 10.1038/s41598-021-95789-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 07/23/2021] [Indexed: 01/04/2023] Open
Abstract
Like humans, weight control in overweight dogs is associated with a longer life expectancy and a healthier life. Dietary supplements are one of the best strategies for controlling obesity and obesity-associated diseases. This study was conducted to assess the potential of black ginseng (BG) and silkworm (SW) as supplements for weight control in diet-induced overweight beagle dogs. To investigate the changes that occur in dogs administered the supplements, different obesity-related parameters, such as body condition score (BCS), blood fatty acid profile, transcriptome, and microbiome, were assessed in high energy diet (HD) and HD with BG + SW supplementation (HDT) groups of test animals. After 12 weeks of BG + SW supplementation, total cholesterol and triglyceride levels were reduced in the HDT group. In the transcriptome analysis, nine genes (NUGGC, EFR3B, RTP4, ACAN, HOXC4, IL17RB, SOX13, SLC18A2, and SOX4) that are known to be associated with obesity were found to be differentially expressed between the ND (normal diet) and HD groups as well as the HD and HDT groups. Significant changes in some taxa were observed between the HD and ND groups. These data suggest that the BG + SW supplement could be developed as dietary interventions against diet-induced obesity, and obesity-related differential genes could be important candidates in the mechanism of the anti-obesity effects of the BG + SW supplement.
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Affiliation(s)
- Miey Park
- Department of Food and Nutrition, College of BioNano Technology, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si, 13120, Gyeonggi-do, Korea
| | - Ki Hyun Kim
- Animal Welfare Research Team, National Institute of Animal Science, National Institute of Animal Science, Rural Development Administration, Wanju, 55365, Korea
| | - Varun Jaiswal
- Department of Food and Nutrition, College of BioNano Technology, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si, 13120, Gyeonggi-do, Korea
| | - Jihee Choi
- Department of Food and Nutrition, College of BioNano Technology, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si, 13120, Gyeonggi-do, Korea
| | - Ju Lan Chun
- Animal Welfare Research Team, National Institute of Animal Science, National Institute of Animal Science, Rural Development Administration, Wanju, 55365, Korea
| | - Kang Min Seo
- Animal Welfare Research Team, National Institute of Animal Science, National Institute of Animal Science, Rural Development Administration, Wanju, 55365, Korea
| | - Mi-Jin Lee
- Clinical Nutritional Medicine, Veterinary Medical Teaching Hospital, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Hae-Jeung Lee
- Department of Food and Nutrition, College of BioNano Technology, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si, 13120, Gyeonggi-do, Korea.
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11
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French SK, Pearl DL, Lem M, Kilborn S, Donnelly B, Slater M. Understanding the associations between owner and pet demographics on pet body condition among those experiencing homelessness and housing vulnerability in Canada. Prev Vet Med 2021; 195:105454. [PMID: 34391080 DOI: 10.1016/j.prevetmed.2021.105454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 07/19/2021] [Accepted: 08/05/2021] [Indexed: 11/19/2022]
Abstract
Approximately 35 000 people experience homelessness in some form each night in Canada, with similar rates (approximately 1/200 individuals) among developed countries. Ten to twenty percent of those individuals are pet owners. Animal companionship provides a variety of mental and physical benefits to people who are living homeless or vulnerably housed, but many in the non-vulnerable sector, including veterinary professionals and animal welfare advocates, express concern for the health and welfare of these animals. We describe the demographics of a population of animals owned by individuals experiencing homelessness and housing vulnerability, and investigate animal and owner factors influencing body condition score and over-conditioning using data collected from Community Veterinary Outreach (CVO). Community Veterinary Outreach is a registered charity focused on improving the health and welfare of people and their pets who are experiencing homelessness and housing vulnerability. The organization provides free services to clients in ten Canadian communities. Data associated with 636 owners and 946 animals were collected during clinics held between April 2018 and March 2020, representing a total of 1124 visits. The population of dogs and cats seen by CVO was demographically similar to populations seen in general companion animal veterinary practice and were in similar health. For both species, the mean body condition score was 5.4/9, where an ideal score is five for cats and four to five for dogs, and 38 % of animals were considered over-conditioned (overweight/obese). Risk factor analysis demonstrated significant associations between being over-conditioned and pet age and the reason for the veterinary visit for cats, and pet age, the number of abnormal findings on physical exam, and a previous CVO visit for dogs. Pet age, sex-neuter status, disease of the oral cavity, and a previous CVO visit were significantly associated with body condition score in cats. Body condition score in dogs was associated with owner age, and with interactions between pet age and breed size group, and between sex-neuter status and owner-reported housing security. These findings suggest that animals owned by those experiencing homeless and housing vulnerability are generally in good health and similar factors influence body condition score and over-conditioning as animals seen in general companion animal veterinary practice. Further efforts to provide support to pet owners within these communities by veterinarians will help support the good health of this population.
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Affiliation(s)
- Shannon K French
- Department of Population Medicine, Ontario Veterinary College, University of Guelph, 50 Stone Rd E, Guelph, ON, N1G 2W1, Canada.
| | - David L Pearl
- Department of Population Medicine, Ontario Veterinary College, University of Guelph, 50 Stone Rd E, Guelph, ON, N1G 2W1, Canada.
| | - Michelle Lem
- Community Veterinary Outreach, PO Box 75, Carp, ON, K2T1E3, Canada.
| | - Susan Kilborn
- Community Veterinary Outreach, PO Box 75, Carp, ON, K2T1E3, Canada.
| | - Blánaid Donnelly
- Community Veterinary Outreach, PO Box 75, Carp, ON, K2T1E3, Canada.
| | - Margaret Slater
- The American Society for the Prevention of Cruelty to Animals, 424 East 92nd Street, New York, NY, 10028, United States.
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12
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Sutherland KA, Cargo-Froom C, Verbrugghe A, Shoveller AK. Equations used to develop commercial dog food feeding guidelines and Canadian owner feeding practices in 2018. THE CANADIAN VETERINARY JOURNAL = LA REVUE VETERINAIRE CANADIENNE 2021; 62:357-366. [PMID: 33867547 PMCID: PMC7953934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Feeding guidelines on commercial dog food packages provide a suggested starting point for food provision for dogs. The equations used to develop commercial dog food feeding guidelines and the owner feeding practices surveyed were examined in this study. The equations used to develop feeding guidelines and the energy density calculation method (Traditional Atwater or Modified Atwater equation) were investigated for 200 dry dog foods sold in Canada. Not all energy densities of products were calculated using the modified Atwater equation, a requirement if claiming compliance with the Association of American Feed Control Officials (AAFCO). Commercial feeding guidelines provide conservative estimates of pet dog energy needs. A survey of dog owners' feeding practices was conducted, with 739 responses analyzed. Respondents generally took appropriate action to manage the weight of their dogs through both exercise and dietary management. Further investigation should explore how owners may be successfully managing their dogs' weight without veterinary supervision.
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Affiliation(s)
- Katja A Sutherland
- Department of Animal Biosciences, Ontario Agricultural College (Sutherland, Cargo-Froom, Shoveller); Department of Clinical Studies, Ontario Veterinary College (Verbrugghe), University of Guelph, Guelph, Ontario N1G 2W1
| | - Cara Cargo-Froom
- Department of Animal Biosciences, Ontario Agricultural College (Sutherland, Cargo-Froom, Shoveller); Department of Clinical Studies, Ontario Veterinary College (Verbrugghe), University of Guelph, Guelph, Ontario N1G 2W1
| | - Adronie Verbrugghe
- Department of Animal Biosciences, Ontario Agricultural College (Sutherland, Cargo-Froom, Shoveller); Department of Clinical Studies, Ontario Veterinary College (Verbrugghe), University of Guelph, Guelph, Ontario N1G 2W1
| | - Anna Kate Shoveller
- Department of Animal Biosciences, Ontario Agricultural College (Sutherland, Cargo-Froom, Shoveller); Department of Clinical Studies, Ontario Veterinary College (Verbrugghe), University of Guelph, Guelph, Ontario N1G 2W1
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13
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Teixeira FA, Queiroz MR, Oba PM, Olivindo RFG, Ernandes MC, Duarte CN, Rentas MF, Brunetto MA. Brazilian owners perception of the body condition score of dogs and cats. BMC Vet Res 2020; 16:463. [PMID: 33246455 PMCID: PMC7694915 DOI: 10.1186/s12917-020-02679-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 11/13/2020] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND The knowledge of how owners view the body condition of their animals is an important factor for the success of the prevention/treatment of obesity and the engagement/adherence to nutritional interventions, which are fundamental to improve the animal prognosis. For this reason, the objective of this study was to evaluate the perception of the owners regarding the body condition score of their animals, compare the perception between cat vs. dog owners, and owners from the countryside vs. metropolitan region of São Paulo State in Brazil. RESULTS 601 dogs and 110 cats were included in this study. There was no significant difference in body condition score assigned by owners by species. Owners of dogs and cats classified by the veterinarian as ideal, overweight, and obese who disagree with body condition score assigned by veterinarian mainly underestimate the body condition score of their animals, while lean dogs' owners overestimate it. Countryside dog owners had a higher rate of disagreement with the veterinarian and more often underestimate the body condition score than owners from the metropolitan region. The owners of lean cats have the same judgments with veterinarians. CONCLUSIONS Owners of dogs and cats have difficulty assessing the body condition score, especially owners from countryside.
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Affiliation(s)
- Fabio Alves Teixeira
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Duque de Caxias Norte, 255, Pirassununga, SP, São Paulo, Brazil
| | - Mariana Ramos Queiroz
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Duque de Caxias Norte, 255, Pirassununga, SP, São Paulo, Brazil
| | - Patrícia Massae Oba
- Department of Animal Sciences , University of Illinois at Urbana-Champaign , Illinois, Urbana, USA
| | - Rodrigo Fernando Gomes Olivindo
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Duque de Caxias Norte, 255, Pirassununga, SP, São Paulo, Brazil
| | - Mariane Ceschin Ernandes
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Duque de Caxias Norte, 255, Pirassununga, SP, São Paulo, Brazil
| | - Caio Nogueira Duarte
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Duque de Caxias Norte, 255, Pirassununga, SP, São Paulo, Brazil
| | - Mariana Fragoso Rentas
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Duque de Caxias Norte, 255, Pirassununga, SP, São Paulo, Brazil
| | - Marcio Antonio Brunetto
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Duque de Caxias Norte, 255, Pirassununga, SP, São Paulo, Brazil.
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14
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Lee WS, Lee JJ, Liao AT, Kao CL, Wang SL. Association between weight change during initial chemotherapy and clinical outcome in dogs with multicentric lymphoma. Vet Comp Oncol 2020; 19:53-60. [PMID: 32654343 DOI: 10.1111/vco.12637] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 06/14/2020] [Accepted: 07/08/2020] [Indexed: 11/27/2022]
Abstract
The majority of the known prognostic factors in dogs with lymphoma have been evaluated before treatment commences or at the time of diagnosis. Prognostic factors evaluated during the initial phase of treatment are less described but may provide important clinical information. In this retrospective study, 82 canine lymphoma patients were categorized according to the weight change between diagnosis and after 5 weeks of chemotherapy. Dogs that gained greater than 5% or lost greater than 5% of initial body weight were categorized as increased- or decreased-weight groups, respectively. Those in which weight changed less than 5% were categorized as the maintained-weight group. The median progression-free survival (PFS) in the increased-weight group, maintained-weight group and decreased-weight group was 226, 256 and 129 days, respectively. The decreased-weight group had significantly shorter PFS than the increased and maintained groups (P = .023, P = .003, respectively). The median survival time (ST) in the increased-weight group, maintained-weight group and decreased-weight group was 320, 339 and 222 days, respectively. There was no significant difference in ST among the three groups (P = .128). In Cox-regression results, weight change group and initial body weight were significant risk factors associated to PFS (P = .007, P = .001, respectively) while only patient's initial body weight was a significant risk factor to ST (P = .013). In conclusion, evaluation of initial body weight and weight changes over time can provide valuable information regarding PFS and ST in dogs with multicentric lymphoma.
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Affiliation(s)
- Wei-Shan Lee
- Department and Graduate Institute of Veterinary Medicine, School of Veterinary Medicine, National Taiwan University, Taipei, Taiwan, ROC
| | - Jih-Jong Lee
- Graduate Institute of Veterinary Clinical Science, School of Veterinary Medicine, National Taiwan University, Taipei, Taiwan, ROC.,Animal Cancer Center, College of Bioresources and Agriculture, National Taiwan University, Taipei, Taiwan, ROC.,National Taiwan University Veterinary Hospital, College of Bioresources and Agriculture, National Taiwan University, Taipei, Taiwan, ROC
| | - Albert Taiching Liao
- Department and Graduate Institute of Veterinary Medicine, School of Veterinary Medicine, National Taiwan University, Taipei, Taiwan, ROC.,Animal Cancer Center, College of Bioresources and Agriculture, National Taiwan University, Taipei, Taiwan, ROC
| | - Chia-Lien Kao
- Graduate Institute of Veterinary Clinical Science, School of Veterinary Medicine, National Taiwan University, Taipei, Taiwan, ROC.,National Taiwan University Veterinary Hospital, College of Bioresources and Agriculture, National Taiwan University, Taipei, Taiwan, ROC
| | - Shang-Lin Wang
- Graduate Institute of Veterinary Clinical Science, School of Veterinary Medicine, National Taiwan University, Taipei, Taiwan, ROC.,Animal Cancer Center, College of Bioresources and Agriculture, National Taiwan University, Taipei, Taiwan, ROC.,National Taiwan University Veterinary Hospital, College of Bioresources and Agriculture, National Taiwan University, Taipei, Taiwan, ROC
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15
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Poon AC, Matsuyama A, Mutsaers AJ. Recent and current clinical trials in canine appendicular osteosarcoma. THE CANADIAN VETERINARY JOURNAL = LA REVUE VETERINAIRE CANADIENNE 2020; 61:301-308. [PMID: 32165755 PMCID: PMC7020630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Osteosarcoma (OSA) is an aggressive primary bone tumor in the domestic dog that most often occurs within the appendicular skeleton. Despite the use of adjuvant chemotherapy, most dogs succumb to metastatic disease within 1 year of diagnosis. To improve this outcome, substantial research is currently focused on investigating novel therapies. Herein, we review emerging treatments and clinical trials that, if proven efficacious, could revolutionize the standard of care for canine appendicular OSA. This article includes a critical perspective on the safety, efficacy, and limitations of select immunotherapy, virotherapy, radiotherapy, targeted therapy, and personalized medicine trials, all of which reflect similar investigations taking place in human oncology. These clinical trials represent a major evolution in the overall approach to therapy for dogs with appendicular OSA that could have significant implications for improving survival.
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Affiliation(s)
- Andrew C Poon
- Department of Biomedical Sciences (Poon, Matsuyama, Mutsaers), Department of Clinical Studies (Mutsaers), Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1
| | - Arata Matsuyama
- Department of Biomedical Sciences (Poon, Matsuyama, Mutsaers), Department of Clinical Studies (Mutsaers), Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1
| | - Anthony J Mutsaers
- Department of Biomedical Sciences (Poon, Matsuyama, Mutsaers), Department of Clinical Studies (Mutsaers), Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1
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16
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Santiago SL, Freeman LM, Rush JE. Cardiac cachexia in cats with congestive heart failure: Prevalence and clinical, laboratory, and survival findings. J Vet Intern Med 2020; 34:35-44. [PMID: 31837182 PMCID: PMC6979101 DOI: 10.1111/jvim.15672] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 11/13/2019] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Cardiac cachexia is common in people and dogs with congestive heart failure (CHF). However, the prevalence and effects of cardiac cachexia in cats are unknown. OBJECTIVES To determine the prevalence of cachexia and its associations with clinical laboratory and survival data in cats with CHF. ANIMALS One hundred twenty-five cats with CHF. METHODS Medical records of cats evaluated during a 40-month period were retrospectively reviewed to identify cats with cardiac cachexia using 7 different definitions. Clinical, laboratory, and survival data were compared between cats with and without cachexia. RESULTS Prevalence of cachexia ranged from 0 to 66.7% for the 7 definitions, with a prevalence of 41.6% using muscle condition score (MCS). Cats with cachexia (determined by MCS) were older (P < .001), more likely to have pleural effusion (P = .003), had significantly higher blood urea nitrogen (P < .001) and neutrophil concentrations (P = .01), and significantly lower body condition score (P < .001), body weights (P < .001), hematocrit (P = .007), and hemoglobin concentrations (P = .009). Survival time for cats with cachexia (determined by MCS) was significantly shorter than for cats without cachexia (P = .03). Cats that were underweight (P = .002) and cats with dilated cardiomyopathy (DCM) also had shorter survival times (P = .04). CONCLUSIONS AND CLINICAL IMPORTANCE The association between cachexia and reduced survival time emphasizes the importance of identifying and addressing this common problem in cats with CHF.
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Affiliation(s)
- Sasha L. Santiago
- Department of Clinical Sciences, Cummings School of Veterinary MedicineTufts UniversityNorth GraftonMassachusetts
| | - Lisa M. Freeman
- Department of Clinical Sciences, Cummings School of Veterinary MedicineTufts UniversityNorth GraftonMassachusetts
| | - John E. Rush
- Department of Clinical Sciences, Cummings School of Veterinary MedicineTufts UniversityNorth GraftonMassachusetts
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17
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Demographic characteristics, site and phylogenetic distribution of dogs with appendicular osteosarcoma: 744 dogs (2000-2015). PLoS One 2019; 14:e0223243. [PMID: 31887114 PMCID: PMC6936818 DOI: 10.1371/journal.pone.0223243] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 09/17/2019] [Indexed: 01/07/2023] Open
Abstract
Objective To report demographic characteristics of a contemporary population of dogs with appendicular osteosarcoma and assess the relationship between demographic characteristics, site distribution, and phylogenetic breed clusters. Design Retrospective case series. Methods A search of the Veterinary Medical Database was performed for dogs with appendicular osteosarcoma as a new diagnosis. Entries were reviewed for the sex, neuter status, age at diagnosis, breed, affected limb, and tumor location. The reported breed for purebred dogs was used to categorize each dog into one of five phylogenetic groups based on microsatellite analysis. Results 744 client-owned dogs were included in the study. Study dogs were represented by a male-to-female ratio of 0.95:1.0, the majority of which (80.9%) were neutered. Most dogs were diagnosed between 7–10 years of age. The majority (77.8%) of dogs were large or giant-breed dogs. Purebred dogs comprised 80.4% of the population. The most common purebred breed affected by OS was the Rottweiler (17.1%). The most common phylogenetic group represented was Mastiff-Terrier (M-T, 26.3%). OS was more commonly located in the forelimb (64.2%) versus the hindlimb (35.8%), and the humerus was the most common site (20.9%). The distribution of age groups and tumor locations were significantly different between phylogenetic clusters. The distribution of age groups and neuter status were significantly different between size groups. Conclusions and significance The demographic data of canine appendicular OS are similar to previous reports. The data on phylogenetic associations can guide future studies aimed at evaluating the genomic mutations that contribute to OS development and its biological behavior.
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18
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Chun JL, Bang HT, Ji SY, Jeong JY, Kim M, Kim B, Lee SD, Lee YK, Reddy KE, Kim KH. A simple method to evaluate body condition score to maintain the optimal body weight in dogs. JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY 2019; 61:366-370. [PMID: 31844547 PMCID: PMC6906133 DOI: 10.5187/jast.2019.61.6.366] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 11/06/2019] [Accepted: 11/08/2019] [Indexed: 12/25/2022]
Abstract
Overweight and obesity induce serious health problems that exert negative effects
on dog’s welfare. Body condition score (BCS) is a common method to
evaluate the body fat mass in animals. By palpating and observing fats under the
skin it is possible to predict animal’s body fat accumulation condition.
BCS is also a useful tool to estimate body fat composition in dogs. However, BCS
can be subjective when it was performed by non-professionals like pet’s
owners. To develop a method to avoid the misevaluation of BCS twenty-four
Beagles were enrolled and performed BCS evaluation. In addition, the length of
chest and abdominal girths were measured. In correlation analysis, the sizes of
chest and abdominal girth were significantly correlated with BCS. Especially,
the difference and ratio of the chest and abdominal length were highly
correlated with the BCS. With that, we suggested that this simple measurement of
chest and abdominal girths by a measuring tape would be an effective method to
estimate BCS scores in dogs that helps non-professionals to manage their own
dog’s nutritional condition by monitoring body fat accumulation
condition.
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Affiliation(s)
- Ju Lan Chun
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
| | - Han Tae Bang
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
| | - Sang Yun Ji
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
| | - Jin Young Jeong
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
| | - Minji Kim
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
| | - Byeonghyeon Kim
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
| | - Sung Dae Lee
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
| | - Yoo Kyung Lee
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
| | - Kondreddy Eswar Reddy
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
| | - Ki Hyun Kim
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
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19
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Saeed MEM, Breuer E, Hegazy MEF, Efferth T. Retrospective study of small pet tumors treated with Artemisia annua and iron. Int J Oncol 2019; 56:123-138. [PMID: 31789393 PMCID: PMC6910181 DOI: 10.3892/ijo.2019.4921] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 10/07/2019] [Indexed: 12/11/2022] Open
Abstract
Artemisinin from Artemisia annua L. and its derivatives are well-known antimalarial drugs. In addition, in vitro studies, in vivo studies and clinical trials have demonstrated that these drugs exhibit anticancer activity in human patients with cancer. Therefore, the aim of the present study was to investigate whether a phytotherapeutic A. annua preparation exerts anticancer activity in veterinary tumors of small pets. Dogs and cats with spontaneous cancer (n=20) were treated with standard therapy plus a commercial A. annua preparation (Luparte®) and compared with a control group treated with standard therapy alone (n=11). Immunohistochemical analyses were performed with formalin-fixed paraffin-embedded tumor biopsies to analyze the expression of transferrin receptor (TfR) and the proliferation marker Ki-67 as possible biomarkers to assess treatment response of tumors to A. annua. Finally, the expression levels of TfR and Ki-67 were compared with the IC50 values towards artemisinin in two dog tumor cells lines (DH82 and DGBM) and a panel of 54 human tumor cell lines. Retrospectively, the present study assessed the survival times of small animals treated by standard therapy with or without A. annua. A. annua treatment was associated with a significantly higher number of animals surviving >18 months compared with animals without A. annua treatment (P=0.0331). Using a second set of small pet tumors, a significant correlation was identified between TfR and Ki-67 expression by immunohistochemistry (P=0.025). To further assess the association of transferrin and Ki-67 expression with cellular response to artemisinin, the present study compared the expression of these two biomarkers and the IC50 values for artemisinin in National Cancer Institute tumor cell lines in vitro. Both markers were inversely associated with artemisinin response (P<0.05), and the expression levels of TfR and Ki-67 were significantly correlated (P=0.008). In conclusion, the promising results of the present retrospective study warrant further confirmation by prospective studies in the future.
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Affiliation(s)
- Mohamed E M Saeed
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Mainz, D‑55128 Rhineland‑Palatinate, Germany
| | - Elmar Breuer
- Veterinary Clinic for Small Animals, 'Alte Ziegelei' Müllheim, D‑79379 Baden, Germany
| | - Mohamed-Elamir F Hegazy
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Mainz, D‑55128 Rhineland‑Palatinate, Germany
| | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Mainz, D‑55128 Rhineland‑Palatinate, Germany
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20
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Callanan GF, Pfeiffer I, Smith K. Evaluation of weight loss in canine cancer bearing patients undergoing radiation therapy. Vet Comp Oncol 2019; 18:184-190. [PMID: 31419017 DOI: 10.1111/vco.12528] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 08/12/2019] [Accepted: 08/12/2019] [Indexed: 11/28/2022]
Abstract
Critical weight loss, as defined by ≥5% decrease in body weight, has been associated with increased morbidity and mortality in human patients with cancers of the head and neck. Weight loss has anecdotally been reported to occur frequently in veterinary patients undergoing radiation therapy and is hypothesized to be more severe in patients with cancers of the head and neck, along with those hospitalized during radiation therapy. The primary objective of this retrospective study was to evaluate the occurrence of critical weight loss in canine cancer bearing patients undergoing either definitive or palliative radiation protocols and to determine if weight changes were associated with radiation toxicity, tumour location or patient hospitalization status. Data from 47 dogs who underwent definitive and 43 dogs who underwent palliative radiation protocols at the University of Tennessee were included for analysis. Dogs were categorized based on tumour location (head/neck or other), hospitalization status (boarded or non-boarded) and radiation toxicity score. Weight recorded at the start of treatment, midway through treatment and at the final treatment was used for analysis. No significant differences were found in regard to weight change over time, location or hospitalization status when evaluated for both protocols. Overall, 5/90 dogs (5.5%) lost 5% or more of their body weight during therapy, and 7/90 dogs (7.7%) gained 5% or more of their body weight. The results of the current study suggest that critical weight loss occurs in a small percentage of canine patients undergoing radiation therapy, contrary to what is often anecdotally reported.
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Affiliation(s)
- Gabrielle F Callanan
- The University of Tennessee College of Veterinary Medicine, Knoxville, Tennessee
| | - Isabella Pfeiffer
- The University of Tennessee College of Veterinary Medicine, Knoxville, Tennessee
| | - Kaitlin Smith
- The University of Tennessee College of Veterinary Medicine, Knoxville, Tennessee
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Abstract
Appetite influences perceived quality of life for a dog or cat with cancer. Inappetence often is multifactorial, complicating treatment. Cancer-related anorexia/cachexia syndrome is a metabolic, paraneoplastic syndrome characterized by decreased food intake, involuntary weight loss, and loss of fat and muscle. If weight loss/cachexia has an impact on canine and feline cancer patients as in humans, management may improve survival times and quality of life. The challenge is having effective, proved therapies available for clinical use. Recent Food and Drug Administration approvals for appetite stimulation have renewed interest and discussion and has the potential to alter the course of case management.
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Zito S, Walker J, Gates MC, Dale A. A Preliminary Description of Companion Cat, Managed Stray Cat, and Unmanaged Stray Cat Welfare in Auckland, New Zealand Using a 5-Component Assessment Scale. Front Vet Sci 2019; 6:40. [PMID: 30854376 PMCID: PMC6396406 DOI: 10.3389/fvets.2019.00040] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 01/31/2019] [Indexed: 12/13/2022] Open
Abstract
Free-roaming cats are a polarizing issue in New Zealand and there is strong need for a comprehensive evaluation of their welfare to better inform population management decisions. In this study, a 5-component visual health-related welfare assessment scale was developed and piloted on a convenience sample of 213 free-roaming companion cats (CC), 210 managed stray cats (MS), and 253 unmanaged stray cats (UMS) from various locations in Auckland, New Zealand. The welfare assessment was performed through distance observation and consisted of body condition score (BCS); coat condition score; nose and eye discharge score; ear crusting score; and injury score. The majority of cats in all groups appeared generally healthy with no nose or eye discharge, ear crusting, or injuries. Although there were no appreciable differences in the apparent welfare of CC and MS cats, future studies with more robust sampling designs are needed to draw accurate inferences. The scale also requires further validation by comparing the visual observations against more detailed physical examination and biochemical data. Nonetheless, the results from this study provide preliminary information about assessing the health and welfare of stray cats as well as considerations for developing and implementing robust assessment scales.
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Affiliation(s)
- Sarah Zito
- Animal Welfare Science and Education Department, Royal New Zealand Society for the Prevention of Animal Cruelty, Auckland, New Zealand
| | - Jessica Walker
- New Zealand Companion Animal Council, Auckland, New Zealand
| | - M Carolyn Gates
- School of Veterinary Sciences, Massey University, Palmerston North, New Zealand
| | - Arnja Dale
- Animal Welfare Science and Education Department, Royal New Zealand Society for the Prevention of Animal Cruelty, Auckland, New Zealand
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24
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Couto KM, Moore PF, Zwingenberger AL, Willcox JL, Skorupski KA. Clinical characteristics and outcome in dogs with small cell T-cell intestinal lymphoma. Vet Comp Oncol 2018; 16:337-343. [PMID: 29322604 DOI: 10.1111/vco.12384] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 12/14/2017] [Accepted: 12/15/2017] [Indexed: 12/31/2022]
Abstract
Small cell intestinal lymphoma has not been well characterized in dogs. The objective of this study was to describe clinical characteristics and outcome in dogs with small cell intestinal lymphoma. We hypothesized that affected dogs would have prolonged survival compared with high-grade gastrointestinal (GI) lymphoma. Pathology records were searched for dogs with histologically confirmed small cell GI lymphoma. Seventeen dogs with confirmed small cell intestinal lymphoma were identified, and clinical and outcome data were retrospectively collected. Histopathology was reviewed by a board-certified pathologist, and tissue sections were subjected to immunophenotyping and molecular clonality assessment. All dogs had small cell, T-cell, lymphoma confirmed within various regions of small intestine, with 1 dog also having disease in abdominal lymph nodes. All dogs had clinical signs attributable to GI disease; diarrhoea (n = 13) was most common. Ultrasonographic abnormalities were present in 8 of 13 dogs with abnormal wall layering (n = 7) and hyperechoic mucosal striations (n = 7) representing the most common findings. In total, 14 dogs received some form of treatment. The median survival time (MST) for all dogs was 279 days and the MST for the 14 dogs that received any treatment was 628 days. Dogs with anaemia and weight loss at presentation had significantly shorter survival times and dogs that received a combination of steroids and an alkylating agent had significantly longer survival times. Small cell, T-cell, intestinal lymphoma is a distinct disease process in dogs, and those undergoing treatment may experience prolonged survival.
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Affiliation(s)
- K M Couto
- Veterinary Medical Teaching Hospital, School of Veterinary Medicine, University of California, Davis, California.,Vista Veterinary Specialists by Ethos Veterinary Health, Sacramento, California
| | - P F Moore
- Department of Pathology, Microbiology, & Immunology, School of Veterinary Medicine, University of California, Davis, California
| | - A L Zwingenberger
- Department of Surgical & Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California
| | - J L Willcox
- Department of Surgical & Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California
| | - K A Skorupski
- Department of Surgical & Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California
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Santarossa A, Parr JM, Verbrugghe A. The importance of assessing body composition of dogs and cats and methods available for use in clinical practice. J Am Vet Med Assoc 2018; 251:521-529. [PMID: 28828948 DOI: 10.2460/javma.251.5.521] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Pazzi P, Kavkovsky A, Shipov A, Segev G, Dvir E. Spirocerca lupi induced oesophageal neoplasia: Predictors of surgical outcome. Vet Parasitol 2017; 250:71-77. [PMID: 29329628 DOI: 10.1016/j.vetpar.2017.11.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 11/27/2017] [Accepted: 11/28/2017] [Indexed: 01/30/2023]
Abstract
Canine spirocercosis is caused by the nematode Spirocerca lupi. Migration results in oesophageal fibro-inflammatory nodules that may undergo neoplastic transformation. No studies have assessed pre- or post-surgical prognostic indicators in dogs that undergo intervention for S. lupi induced oesophageal neoplasia. This observational, multi-center study aimed to assess the outcome of dogs with Spirocerca induced sarcoma undergoing endoscopic-guided ablation (n = 12) or surgery (n = 18), and identify prognostic indicators. Parameters evaluated included: age, weight, gender, presenting complaints, duration of clinical signs, complete blood count, serum biochemistry, neoplasia size, placement of percutaneous endoscopically-placed gastrostomy tube, histopathological mitotic indices, days to discharge and chemotherapy administration. Kaplan-Meier survival curves showed no difference in survival between ablation and surgery {(median: 73.5 days (range: 0-1511) vs. 108 days (range: 0-1550), respectively (p = 0.982)}. Reduced survival was documented in patients presenting with weight loss (P = 0.027), hypochromasia (MCHC <33 g/dL, P = 0.023) or leucocytosis (>15 × 109/L, P = 0.017) with a hazard ratio of 2.51 (CI95% = 1.071-6.018, P = 0.034), 2.71 (CI95% = 1.10-6.65, P = 0.03) and 4.39 (CI95%: 1.21-15.97, P = 0.025) respectively. In the dogs surviving more than 21 days, Ht <36% and leucocytosis >15.0 × 109/L at presentation were associated with reduced survival (p = 0.016, p = 0.021 respectively) and hazard ratio of 3.29 (CI95% = 1.18-9.2, P = 0.023) and 3.81 (CI95% = 1.15-12.55, P = 0.028) respectively. Intra-intervention-group survival analysis identified increased survival time in dogs receiving chemotherapy, but only within the surgical group (P = 0.02).The hospitalisation time of dogs undergoing ablation (median: 0 days, range: 0-4) was significantly shorter than dogs undergoing surgery (9 days, 1-21) (P < 0.001). In this study, no clear benefit was identified for surgery, thus when ablation is technically possible it should be considered advantageous, as hospitalisation time is significantly shorter. Weight loss, hypochromasia and leucocytosis were identified as long-term prognostic indicators at presentation.
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Affiliation(s)
- Paolo Pazzi
- Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa.
| | - Anastasia Kavkovsky
- Koret School of Veterinary Medicine, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Anna Shipov
- Koret School of Veterinary Medicine, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Gilad Segev
- Koret School of Veterinary Medicine, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Eran Dvir
- Tel Hai Academic College, Upper Galilee, Israel
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Abstract
Canine osteosarcoma (OSA) is a malignant neoplastic tumor, which develops from the primitive mesenchymal stem cell, that has or can acquire the capacity to produce neoplastic osteoid with possible neoplastic bone formation. Predisposition of some dog breeds to OSA indicates genetic background of oncogenesis. The aim of the study was to characterize animal-dependent risk factors for canine osteosarcoma development in Poland. The study was conducted on canine patients diagnosed cytologically or histopathologically as having OSA, and data on age, breed, sex, as well as tumor location and character were recorded. No sex predisposition to OSA was observed, mongrels were significantly underrepresented. Large and giant dogs accounted for 47% and 35% of all pedigree dogs, respectively, and both proved predisposed to OSA. A vast majority of OSA developed in the skeleton (appendicular skeleton was more commonly affected than axial skeleton), soft tissues were affected less often. Rottweiler dogs are strongly predisposed to OSA, suggesting that the genetic background is involved in the tumor development, and indicates that dogs of this breed are a promising object for further studies on OSA pathogenesis.
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28
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Story AL, Boston SE, Kilkenny JJ, Singh A, Woods JP, Culp WTN, Skorupski KA, Lu X. Evaluation of Weight Change During Carboplatin Therapy in Dogs With Appendicular Osteosarcoma. J Vet Intern Med 2017; 31:1159-1162. [PMID: 28503759 PMCID: PMC5508317 DOI: 10.1111/jvim.14724] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 02/02/2017] [Accepted: 03/30/2017] [Indexed: 01/06/2023] Open
Abstract
Background The prevalence of cancer cachexia in veterinary medicine has not been studied widely, and as of yet, no definitive diagnostic criteria effectively assess this syndrome in veterinary patients. Objectives (1) To determine the patterns of weight change in dogs with appendicular osteosarcoma treated with amputation and single‐agent carboplatin during the course of adjuvant chemotherapy; and (2) to determine whether postoperative weight change is a negative prognostic indicator for survival time in dogs with osteosarcoma. Animals Eighty‐eight dogs diagnosed with appendicular osteosarcoma. Animals were accrued from 3 veterinary teaching hospitals. Methods Retrospective, multi‐institutional study. Dogs diagnosed with appendicular osteosarcoma and treated with limb amputation followed by a minimum of 4 doses of single‐agent carboplatin were included. Data analyzed in each patient included signalment, tumor site, preoperative serum alkaline phosphatase activity (ALP), and body weight (kg) at each carboplatin treatment. Results A slight increase in weight occurred over the course of chemotherapy, but this change was not statistically significant. Weight change did not have a significant effect on survival. Institution, patient sex, and serum ALP activity did not have a significant effect on survival. Conclusions and Clinical Importance Weight change was not a prognostic factor in these dogs, and weight loss alone may not be a suitable method of determining cancer cachexia in dogs with appendicular osteosarcoma.
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Affiliation(s)
- A L Story
- College of Veterinary Medicine, University of Florida, Gainesville, FL
| | - S E Boston
- College of Veterinary Medicine, University of Florida, Gainesville, FL
| | - J J Kilkenny
- Ontario Veterinary College, University of Guelph, Guelph, ON, Canada
| | - A Singh
- Ontario Veterinary College, University of Guelph, Guelph, ON, Canada
| | - J P Woods
- Ontario Veterinary College, University of Guelph, Guelph, ON, Canada
| | - W T N Culp
- University of California-Davis School of Veterinary Medicine, Davis, CA
| | - K A Skorupski
- University of California-Davis School of Veterinary Medicine, Davis, CA
| | - X Lu
- College of Public Health and Health Professions, University of Florida, Gainesville, FL
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