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Zapata I, Eyre AW, Alvarez CE. Psychological Stress Is Associated with Increased Cancer Risk in Dogs. Animals (Basel) 2023; 13:1869. [PMID: 37889770 PMCID: PMC10251977 DOI: 10.3390/ani13111869] [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: 04/19/2023] [Revised: 05/26/2023] [Accepted: 06/01/2023] [Indexed: 10/29/2023] Open
Abstract
Although there is evidence that psychological stress may be associated with increased cancer risk, the effect of stress on cancer risk is difficult to study, both in humans, due to socioeconomic factors, and in animal models, due to questionable biological relevance. Here, we test whether heritable canine temperament that increases psychological stress is associated with cancer risk. The study data are breed-specific averages of incidences of multiple cancer types and of temperament classes. The latter are derived from a latent class analysis of behavioral questionnaires completed by owners (C-BARQ). We thus classified the dogs according to whether they are calm vs. reactive within and across breeds. Using meta-analysis approaches, we modeled the risk of multiple cancer types in calm vs. reactive dogs. We adjusted for breed averages of body mass and lifespan, which are common confounders that impact cancer. Our study confirms that body size has a significant effect of on risk of multiple types of cancers in dogs and shows for the first time that temperament also has a moderate effect. These findings suggest dog models of heritable psychological stress are suitable for molecular epidemiological and translational studies on its effects on cancer risk.
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Affiliation(s)
- Isain Zapata
- Department of Biomedical Sciences, Rocky Vista University College of Osteopathic Medicine, Englewood, CO 80112, USA
| | | | - Carlos E Alvarez
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH 43210, USA
- Department of Veterinary Clinical Sciences, The Ohio State University College of Veterinary Medicine, Columbus, OH 43210, USA
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Epigenetic Alterations in Canine Malignant Lymphoma: Future and Clinical Outcomes. Animals (Basel) 2023; 13:ani13030468. [PMID: 36766357 PMCID: PMC9913421 DOI: 10.3390/ani13030468] [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: 12/02/2022] [Revised: 01/25/2023] [Accepted: 01/28/2023] [Indexed: 02/02/2023] Open
Abstract
Canine malignant lymphoma is a common neoplasia in dogs, and some studies have used dogs as a research model for molecular mechanisms of lymphomas in humans. In two species, chemotherapy is the treatment of choice, but the resistance to conventional anticancer drugs is frequent. The knowledge of molecular mechanisms of development and progression of neoplasia has expanded in recent years, and the underlying epigenetic mechanisms are increasingly well known. These studies open up new ways of discovering therapeutic biomarkers. Histone deacetylases and demethylase inhibitors could be a future treatment for canine lymphoma, and the use of microRNAs as diagnosis and prognosis biomarkers is getting closer. This review summarises the epigenetic mechanisms underlying canine lymphoma and their possible application as treatment and biomarkers, both prognostic and diagnostic.
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Aupperle-Lellbach H, Grassinger JM, Floren A, Törner K, Beitzinger C, Loesenbeck G, Müller T. Tumour Incidence in Dogs in Germany: a Retrospective Analysis of 109,616 Histopathological Diagnoses (2014-2019). J Comp Pathol 2022; 198:33-55. [PMID: 36116890 DOI: 10.1016/j.jcpa.2022.07.009] [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: 04/20/2022] [Revised: 05/16/2022] [Accepted: 07/30/2022] [Indexed: 10/14/2022]
Abstract
Characterization of a tumour entity is based on the precise histopathological diagnosis taking into account the signalment of the diseased animal. The present study is a comprehensive, up-to-date statistical investigation on the type, frequency and breed distribution of neoplasia in dogs in Germany. The histopathological datasets of 109,616 German canine tissue samples (2014-2019) were processed and statistically examined in retrospect. Non-neoplastic diseases were found in 38,650 samples (35.3%) and 70,966 neoplasms (64.7%) were diagnosed. The most common neoplasms were mammary tumours (21.9%), benign epithelial skin tumours (15.4%), mast cell tumour (9.7%), histiocytoma (7.0%), soft tissue sarcoma (5.8%), lipoma (5.8%), melanocytic tumours (5.2%) and odontogenic tumours (4.7%). In general, Beagles, Magyar Vizslas, Boxers, Schnauzers, Spaniels, French Bulldogs and Golden Retrievers had an increased risk of neoplasia (odds ratio 1.17-1.46; all: P ≤0.001) compared with crossbreed dogs. In particular, Boxers, Golden Retrievers, Rottweilers and Schnauzers were often affected by malignant neoplasms, whereas some breeds (eg, West Highland White Terrier, Magyar Vizsla, Chihuahua, Dachshund and Yorkshire Terrier) were frequently affected by numerous benign tumour types. Despite the known risk of haemangiosarcoma in German Shepherd Dogs, other malignant tumours were rare in this breed. Depending on the type of tumour, some purebred dog breeds can have an increased, reduced or identical risk for certain neoplasms compared with crossbreeds. Discussion of breed predispositions to tumour diseases must therefore be conducted critically and with a view to clinical relevance.
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Affiliation(s)
| | | | - Andreas Floren
- Institut für Bioinformatik, Julius-Maximilians-Universität, Würzburg, Germany; Institut für Tierökologie und Tropenbiologie, Lehrstuhl für Zoologie III (Tierökologie), Würzburg, Germany
| | | | | | | | - Tobias Müller
- Institut für Bioinformatik, Julius-Maximilians-Universität, Würzburg, Germany
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Rigas K, Singleton DA, Radford AD, Amores-Fuster I, Killick DR. Do socioeconomic factors impact management of suspected canine multicentric lymphoma in UK first opinion practice? Vet Rec 2022; 191:e1319. [PMID: 35191051 DOI: 10.1002/vetr.1319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 11/01/2021] [Accepted: 12/13/2021] [Indexed: 11/08/2022]
Abstract
BACKGROUND This study aimed to describe the management of cases of suspected and confirmed canine multicentric lymphoma (ML) in first opinion practice (FOP) and investigate whether socioeconomic factors are associated with initial management. METHODS Clinical narratives from electronic health records collected by the Small Animal Veterinary Surveillance Network (SAVSNET) were searched to identify dogs with peripheral lymphadenomegaly in which ML was the major differential. Cases were grouped as either ML confirmed (ML-C) or ML suspected but not confirmed (ML-S). Associations between initial management and socioeconomic factors were assessed via multivariable logistic regression. RESULTS Two hundred and sixty-four cases with ML-C and 410 with ML-S were identified. There was an increased probability that owners of ML-C cases resided in less deprived areas. Moreover, a diagnosis was made more commonly in insured dogs. Only insured pets were more likely to be treated with chemotherapy following diagnosis. The majority of dogs in both groups were treated with corticosteroids alone (ML-S, n = 256/410; ML-C, n = 123/264). A small minority were referred (n = 30/674). CONCLUSION Socioeconomic inequalities appear to be associated with the diagnosis and management of dogs with suspected or confirmed ML in FOP. Most dogs with suspected multicentric lymphoma (in the UK) are managed in FOP (n = 644/674). Consequently, expanding the knowledge base relevant to this setting offers an opportunity to improve the management of canine lymphoma.
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Affiliation(s)
- Konstantinos Rigas
- Department of Small Animal Clinical Sciences, University of Liverpool, Neston, Cheshire, UK
| | - David A Singleton
- SAVSNET, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Neston, Cheshire, UK
| | - Alan D Radford
- SAVSNET, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Neston, Cheshire, UK
| | - Isabel Amores-Fuster
- Department of Small Animal Clinical Sciences, University of Liverpool, Neston, Cheshire, UK
| | - David R Killick
- Department of Small Animal Clinical Sciences, University of Liverpool, Neston, Cheshire, UK
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Jark P, Fracacio C, Anai L, Silva M, Calazans S, Senhorello I, Costa M, Sequeira J, Sueiro F. Histopathological and immunophenotypical characterization of canine multicentric lymphoma in Brazil: a study of 203 cases. ARQ BRAS MED VET ZOO 2020. [DOI: 10.1590/1678-4162-11484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
ABSTRACT The immunophenotype is regarded as an independent prognostic factor in high-grade lymphomas, seeing that lymphomas of T-cell origin are associated with shorter survival time. Although a number of studies have evaluated the immunophenotypical profile of lymphoma in the USA and Europe, Brazilian research on the matter remains scarce. Exact characterization of the histopathological type is crucial to establish proper treatment and prognosis. This study evaluated the database of immunohistochemistry laboratories that perform immunophenotyping of canine lymphoma in Brazil. A total of 203 cases of multicentric lymphoma were classified according to the WHO classification. Immunophenotyping was able to identify 71.4% lymphomas of B-cell line, 27.1% of T-cell line and 1.5% of non-B cells and non-T cell lines. Diffuse large B-cell lymphoma was the most common with 59.1% of the cases. Among T-cell lymphomas, lymphoblastic was the most common (11.33% of the cases). Even though canine lymphomas tend to be high-grade, indolent lymphomas comprised 11.82% of the cases and T-zone lymphoma was the most prevalent (8.86%). The immunophenotype of multicentric lymphoma in Brazil is similar to those in other parts of the world, which suggests similar etiologic factors to the development of this disease.
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Affiliation(s)
- P.C. Jark
- Universidade Brazil, Brazil; Universidade Estadual Paulista, Brazil
| | | | - L.A. Anai
- Universidade Estadual Paulista, Brazil
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Werner S, Wallukat G, Becker NP, Wenzel K, Müller J, Schimke I, Wess G. The aptamer BC 007 for treatment of dilated cardiomyopathy: evaluation in Doberman Pinschers of efficacy and outcomes. ESC Heart Fail 2020; 7:844-855. [PMID: 32212256 PMCID: PMC7261533 DOI: 10.1002/ehf2.12628] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 12/14/2019] [Accepted: 01/06/2020] [Indexed: 12/17/2022] Open
Abstract
Aims Aptamer BC 007, a 15‐mer single‐strand DNA oligonucleotide (5'‐GGTTGGTGTGGTTGG‐3'), was developed to neutralize functional autoantibodies that bind to the extracellular domains of G protein‐coupled receptors (GPCR‐AAB), leading to the modulation of receptor‐mediated signalling cascades that induce pathophysiological states. Among the GPCR‐AAB, there are those directed against the β1‐adrenergic receptor (β1‐AAB) that are highly present in patients with dilated cardiomyopathy (DCM) and are increasingly accepted as disease drivers. Using Doberman Pinschers (DP) with DCM, which possess similarities with human DCM among these β1‐AAB positivity for that the disease‐driving role in DP DCM was demonstrated, the safety of BC 007, efficacy for neutralizing β1‐AAB, and the DP's outcome were investigated. Methods and results Fourteen client‐owned β1‐AAB‐positive DP with electrocardiographically and echocardiographically indicated DCM were treated with BC 007. For controlling, two groups were created: 14 β1‐AAB‐positive DP with DCM not treated with BC 007 (Control 1) and 14 DP with DCM closely matched to the BC 007‐treated DP (Control 2), retrospectively selected from the institutional database of DP. After treatment, DP were monitored both echocardiographically, and for β1‐AAB, and survival curves were calculated. Based on clinical and laboratory examination, no adverse effects associated with BC 007 treatment were observed during the study. Forty‐eight hours after treatment, the DP's blood was free of β1‐AAB, which led to a reduction or stabilization of left ventricular end‐systolic volume (ESVI) during β1‐AAB free time in 10 of the treated DP. In one DP, where β1‐AAB returned after 3 months and ESVI worsened again, a second BC 007 treatment after 9 months again cleared the blood from β1‐AAB and improved the ESVI. Compared with the controls, DP treated with BC 007 showed a significantly longer survival time [572 days, interquartile range (IQR) 442–840 days] vs. Control group 1 (266 days, IQR 97–438 days; logrank: P = 0.009) and Control group 2 (229 days, IQR 174–319 days; logrank: P = 0.012). Conclusions Treatment with BC 007 for β1‐AAB neutralization was safe, resulted in a long‐lasting reduction of β1‐AAB combined with improved cardiac function and prolonged the survival of DP with DCM. Using a natural large animal model of DCM considered superior to small animal models of immunization‐induced cardiomyopathy, combined with a study design comparable with clinical trials, we believe that our results provide the basis for optimism that treatment with BC 007 might also be effective in human patients with DCM.
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Affiliation(s)
- Sabine Werner
- Department of Cardiology, Clinic of Small Animal Medicine, Ludwig-Maximilians-University, Munich, Germany
| | - Gerd Wallukat
- Department of Research & Development, Berlin Cures GmbH, Berlin, Germany
| | - Niels-Peter Becker
- Department of Research & Development, Berlin Cures GmbH, Berlin, Germany
| | - Katrin Wenzel
- Department of Research & Development, Berlin Cures GmbH, Berlin, Germany
| | - Johannes Müller
- Department of Research & Development, Berlin Cures GmbH, Berlin, Germany
| | - Ingolf Schimke
- Department of Research & Development, Berlin Cures GmbH, Berlin, Germany
| | - Gerhard Wess
- Department of Cardiology, Clinic of Small Animal Medicine, Ludwig-Maximilians-University, Munich, Germany
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Schofield I, Stevens KB, Pittaway C, O'Neill DG, Fecht D, Dobson JM, Brodbelt DC. Geographic distribution and environmental risk factors of lymphoma in dogs under primary-care in the UK. J Small Anim Pract 2019; 60:746-754. [PMID: 31709551 DOI: 10.1111/jsap.13075] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 09/13/2019] [Accepted: 09/20/2019] [Indexed: 11/27/2022]
Abstract
OBJECTIVES To integrate external data sources with VetCompass postcode data to explore the spatial distribution and examine potential associations with environmental risk factors in dogs diagnosed with lymphoma at primary care veterinary practices. MATERIALS AND METHODS Cases of lymphoma were identified from electronic patient records of 455,553 dogs under primary veterinary care during 2013 in the UK. Cases were defined as either laboratory-confirmed or non-laboratory-confirmed. Disease maps at the postcode-district level were used to define the geographic distribution of lymphoma incidence and spatial clustering was explored. Environmental risk factors from external data sources were transferred to a compatible format and logistic regression modelling was used to examine associations between environmental herbicide, fungicide and radon concentrations with lymphoma. RESULTS From the denominator population of 455,553 dogs, 279 lymphoma cases (187 with laboratory confirmation and 93 without) were identified. Heterogeneous geographic variation was observed with weak evidence of clustering around London and the south-west of England. Herbicide and fungicide exposures were weakly associated with a diagnosis of lymphoma in the univariable analysis. After accounting for the age at diagnosis and breed in the multivariable analysis, herbicide exposure was associated with a diagnosis of lymphoma. CLINICAL SIGNIFICANCE The heterogeneous distribution of lymphoma in UK dogs provides further evidence for geographic variation of lymphoma, perhaps in part associated with underlying environmental risk factors. The results suggest an association between environmental herbicide and canine lymphoma.
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Affiliation(s)
- I Schofield
- Pathobiology and Population Science, The Royal Veterinary College, Hatfield, AL9 7TA, UK
| | - K B Stevens
- Pathobiology and Population Science, The Royal Veterinary College, Hatfield, AL9 7TA, UK
| | - C Pittaway
- Department of Veterinary Medicine, University of Cambridge, Cambridge, CB3 0ES, UK
| | - D G O'Neill
- Pathobiology and Population Science, The Royal Veterinary College, Hatfield, AL9 7TA, UK
| | - D Fecht
- Small Area Health Statistics Unit, MRC-PHE Centre for Environment and Health, School of Public Health, Imperial College London, W2 1PG, London, UK
| | - J M Dobson
- Department of Veterinary Medicine, University of Cambridge, Cambridge, CB3 0ES, UK
| | - D C Brodbelt
- Pathobiology and Population Science, The Royal Veterinary College, Hatfield, AL9 7TA, UK
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Lisowska M, Milczarek M, Ciekot J, Kutkowska J, Hildebrand W, Rapak A, Miazek A. An Antibody Specific for the Dog Leukocyte Antigen DR (DLA-DR) and Its Novel Methotrexate Conjugate Inhibit the Growth of Canine B Cell Lymphoma. Cancers (Basel) 2019; 11:cancers11101438. [PMID: 31561563 PMCID: PMC6827003 DOI: 10.3390/cancers11101438] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 09/12/2019] [Accepted: 09/24/2019] [Indexed: 01/18/2023] Open
Abstract
Canine B-cell lymphoma (CBL) is an incurable, spontaneous lymphoid malignancy constituting an accurate animal model for testing novel therapeutic strategies in human medicine. Resources of available species-specific therapeutic monoclonal antibodies (mAbs) targeting CBL are scarce. The aim of the present study was to evaluate the therapeutic potential of mAb B5, specific for the dog leukocyte antigen DR (DLA-DR) and its antibody-drug conjugate with methotrexate (B5-MTX). B5 induced caspase-dependent apoptosis of DLA-DR-expressing canine B cell lymphoma/CLBL1 and CLB70 leukemia lines, but not the GL-1 line not expressing DLA-DR. The cytotoxicity of B5-MTX to sensitive cells was further potentiated by a payload of MTX, but without any substantial off-target effects. The infusion of B5 and B5-MTX in a murine model of disseminated, advanced canine lymphoma, mediated >80% and >90% improvement in survival, respectively, and was well tolerated by the animals. Interestingly, the concentrations of soluble DLA-DR (sDLA-DR) antigens present in the blood serum of tumor-bearing mice were found proportional to the tumor burden. On this basis, sDLA-DR levels were evaluated as a potential biomarker using samples from canine lymphoma patients. In summary, the action of B5 and B5-MTX holds promise for further development as an alternative/complementary option for the diagnosis and treatment of canine lymphoma.
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Affiliation(s)
- Marta Lisowska
- Department of Tumor Immunology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 53-114 Wroclaw, Poland.
| | - Magdalena Milczarek
- Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 53-114 Wroclaw, Poland.
| | - Jarosław Ciekot
- Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 53-114 Wroclaw, Poland.
| | - Justyna Kutkowska
- Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 53-114 Wroclaw, Poland.
| | | | - Andrzej Rapak
- Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 53-114 Wroclaw, Poland.
| | - Arkadiusz Miazek
- Department of Biochemistry and Molecular Biology, Wroclaw University of Environmental and Life Sciences, 50-375 Wroclaw, Poland.
- Centre of Genetic Engineering, Wroclaw University of Environmental and Life Sciences, 50-366 Wroclaw, Poland.
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Pittaway C, Schofield I, Dobson J, O'Neill DG, Brodbelt DC. Incidence and risk factors for the diagnosis of lymphoma in dogs in UK primary-care practice. J Small Anim Pract 2019; 60:581-588. [PMID: 31328276 DOI: 10.1111/jsap.13054] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Revised: 04/19/2019] [Accepted: 04/26/2019] [Indexed: 02/03/2023]
Abstract
OBJECTIVES To identify the incidence, risk factors and presenting signs of lymphoma in dogs presenting to primary-care practice in the UK using analysis of data within the VetCompass™ programme. MATERIALS AND METHODS Case records from the VetCompass™ programme from primary-care practices in the UK were searched for newly diagnosed lymphoma in dogs within a 1-year period: 2013. Diagnosis was based on clinical records with or without laboratory confirmation. Signalment was evaluated as risk factors for lymphoma diagnosis using multivariable logistic regression. RESULTS There were 286 presumed newly diagnosed cases identified during 2013 from 455,553 dogs (overall incidence risk 63 of 100,000 dogs per year) of which 193 (67%) were laboratory confirmed (42 of 100,000 dogs per year). Advanced age, dogs older than 12 years, dogs weighing more than 30 kg and some specific breeds were significantly associated with lymphoma diagnosis. Only 18 dogs (6%) of the population identified were referred to a specialist clinic. CLINICAL SIGNIFICANCE This study concurs with others that age, bodyweight and breed are significant risk factors for lymphoma. Results of this study highlight: (1) the low number of dogs with lymphoma that are referred to specialists in the UK and (2) that few dogs undergo immunophenotyping (which can carry prognostic importance), emphasising the importance of epidemiological programmes that evaluate diseases presented to primary-care veterinarians.
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Affiliation(s)
- C Pittaway
- The Queen's Veterinary School Hospital, Department of Veterinary Medicine, University of Cambridge, Cambridge, CB3 0ES, UK
| | - I Schofield
- Pathobiology and Population Sciences, The Royal Veterinary College, Hatfield, Herts, AL9 7TA, UK
| | - J Dobson
- The Queen's Veterinary School Hospital, Department of Veterinary Medicine, University of Cambridge, Cambridge, CB3 0ES, UK
| | - D G O'Neill
- Pathobiology and Population Sciences, The Royal Veterinary College, Hatfield, Herts, AL9 7TA, UK
| | - D C Brodbelt
- Pathobiology and Population Sciences, The Royal Veterinary College, Hatfield, Herts, AL9 7TA, UK
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Cheng KY, Soh PXY, Bennett PF, Williamson P. Lymphoma in Australian Border Collies: survey results and pedigree analyses. Aust Vet J 2019; 97:14-22. [DOI: 10.1111/avj.12780] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 10/16/2018] [Accepted: 10/18/2018] [Indexed: 01/15/2023]
Affiliation(s)
- KY Cheng
- Sydney School of Veterinary Science and School of Life and Environmental Sciences, Faculty of Science, Evelyn Williams Building B10; The University of Sydney; New South Wales 2006 Australia
| | - PXY Soh
- Sydney School of Veterinary Science and School of Life and Environmental Sciences, Faculty of Science, Evelyn Williams Building B10; The University of Sydney; New South Wales 2006 Australia
| | - PF Bennett
- Sydney School of Veterinary Science and School of Life and Environmental Sciences, Faculty of Science, Evelyn Williams Building B10; The University of Sydney; New South Wales 2006 Australia
| | - P Williamson
- Sydney School of Veterinary Science and School of Life and Environmental Sciences, Faculty of Science, Evelyn Williams Building B10; The University of Sydney; New South Wales 2006 Australia
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11
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Bennett PF, Taylor R, Williamson P. Demographic risk factors for lymphoma in Australian dogs: 6201 cases. J Vet Intern Med 2018; 32:2054-2060. [PMID: 30307659 PMCID: PMC6271309 DOI: 10.1111/jvim.15306] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 06/27/2018] [Accepted: 07/24/2018] [Indexed: 12/22/2022] Open
Abstract
Background Lymphoma is common in the dog. Studies of population risk factors primarily have been derived from referral institution or insurance data. Objective To identify and quantify the host risk factors for lymphoma in a broad population of Australian dogs. Animals Data on 6201 client owned dogs were retrieved from a commercial veterinary laboratory, a general practice group and 2 referral hospitals. Methods Data collected included breed, sex, and neuter status. A reference population of 640 105 dogs was generated from the referral hospitals and from council registration data. The risk of lymphoma by sex and neuter status was calculated as odds ratios (OR). Results The study identified 30 breeds at increased risk of lymphoma, 15 that have not been reported previously, and 26 breeds at decreased risk, 18 that have not been reported previously. Males were over represented compared to females with an OR of 1.1 (95% CI, 1.1–1.2; P < .001). Neutered animals were at higher risk compared to intact animals with an OR of 3.2 (95% CI, 2.9–3.5) which was found in both males (OR, 2.8; 95% CI; 2.5–3.2) and females (OR, 4.4; 95% CI, 3.5–5.1). Conclusions and Clinical Importance Breed, sex, and neuter status alter the risk of lymphoma in dogs. These 3 factors must be considered when evaluating lymphoma risk as potential markers of underlying differences in disease etiology. Comparison of breeds at increased and decreased risk could be advantageous when evaluating specific etiological factors.
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Affiliation(s)
- Peter F Bennett
- Faculty of Science, Sydney School of Veterinary Science, University of Sydney, New South Wales, Australia
| | - Rosanne Taylor
- Faculty of Science, Sydney School of Veterinary Science, University of Sydney, New South Wales, Australia
| | - Peter Williamson
- Faculty of Science, School of Life and Environmental Science, University of Sydney, New South Wales, Australia
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12
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Comazzi S, Marelli S, Cozzi M, Rizzi R, Finotello R, Henriques J, Pastor J, Ponce F, Rohrer-Bley C, Rütgen BC, Teske E. Breed-associated risks for developing canine lymphoma differ among countries: an European canine lymphoma network study. BMC Vet Res 2018; 14:232. [PMID: 30081964 PMCID: PMC6090884 DOI: 10.1186/s12917-018-1557-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 07/30/2018] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Canine breeds may be considered good animal models for the study of genetic predisposition to cancer, as they represent genetic clusters. From epidemiologic and case collection studies it emerges that some breeds are more likely to develop lymphoma or specific subtypes of lymphoma but available data are variable and geographically inconsistent. This study was born in the context of the European Canine Lymphoma Network with the aim of investigating the breed prevalence of canine lymphoma in different European countries and of investigating possible breed risk of lymphoma overall and/or different lymphoma subtypes. RESULTS A total of 1529 canine nodal lymphoma cases and 55,529 control cases from 8 European countries/institutions were retrospectively collected. Odds ratios for lymphoma varied among different countries but Doberman, Rottweiler, boxer and Bernese mountain dogs showed a significant predisposition to lymphoma. In particular, boxers tended to develop T-cell lymphomas (either high- or low-grade) while Rottweilers had a high prevalence of B-cell lymphomas. Labradors were not predisposed to lymphoma overall but tended to develop mainly high-grade T-cell lymphomas. In contrast with previous studies outside of Europe, the European golden retriever population did not show any possible predisposition to lymphoma overall or to specific subtypes such as T-zone lymphoma. CONCLUSION Further prospective studies with more precise and consistent subtype identification are needed to confirm our retrospective results and to create the basis for the investigation of possible genes involved in different predispositions.
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Affiliation(s)
- Stefano Comazzi
- Department of Veterinary Medicine, University of Milan, Via Celoria 10, 20133, Milan, Italy.
| | - Stefano Marelli
- Department of Veterinary Medicine, University of Milan, Via Celoria 10, 20133, Milan, Italy
| | - Marzia Cozzi
- Department of Veterinary Medicine, University of Milan, Via Celoria 10, 20133, Milan, Italy
| | - Rita Rizzi
- Department of Veterinary Medicine, University of Milan, Via Celoria 10, 20133, Milan, Italy
| | - Riccardo Finotello
- Department of Small Animal Clinical Science, Institute of Veterinary Science, University of Liverpool, Liverpool, UK
| | | | - Josep Pastor
- Department of Animal Medicine and Surgery, University Autonoma of Barcelona, Barcelona, Spain
| | - Frederique Ponce
- Department of Internal Medicine, University of Lyon, Lyon, France
| | - Carla Rohrer-Bley
- Division of Radiation Oncology, Department of Small Animals, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Barbara C Rütgen
- Department of Pathobiology, University of Veterinary Medicine, Vienna, Austria
| | - Erik Teske
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
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13
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Jackson AE. In this issue - May 2017. Aust Vet J 2017. [DOI: 10.1111/avj.12584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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