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Rieder JC, Steffensen N, Imker R, Lassnig S, de Buhr N. The effect of doxycycline on canine neutrophil functions. Vet Immunol Immunopathol 2024; 267:110701. [PMID: 38147695 DOI: 10.1016/j.vetimm.2023.110701] [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: 06/30/2023] [Revised: 12/04/2023] [Accepted: 12/08/2023] [Indexed: 12/28/2023]
Abstract
Doxycycline is a broad-spectrum tetracycline-class antibiotic that is frequently used to treat bacterial infections. Its use has also been described in immune-mediated diseases due to its immunomodulatory properties. The aim of this study was to evaluate the immunomodulatory effect of doxycycline on canine neutrophil functions. Therefore, the release of reactive oxygen species (ROS) and the formation of neutrophil extracellular traps (NETs) were determined after incubation of canine PMNs with doxycycline in three different concentrations (4 µg/mL, 20 µg/mL and 200 µg/mL) for one and three hours, respectively. Additionally, a neutrophil killing assay with a doxycycline-resistant Staphylococcus aureus was performed to determine the bactericidal effect of doxycycline treated PMNs in presence of plasma. Doxycycline significantly diminished the production of ROS. However, doxycycline concentrations of 4 µg/mL and 20 µg/mL significantly induced NETs. A synergistic bacteriostatic effect of PMNs and doxycycline on a doxycycline-resistant Staphylococcus aureus isolate was detectable. However, already PMNs and especially doxycycline alone inhibited the growth. In summary, doxycycline showed a concentration-dependent immunomodulatory property in canine PMNs with a reduced ROS production and increased NET-induction. This immunomodulatory effect resulted in a slightly increased elimination of a doxycycline-resistant Staphylococcus aureus by the doxycycline plasma concentrations achieved in dogs.
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Affiliation(s)
- Johanna C Rieder
- Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Hannover Foundation, Bünteweg 9, 30559 Hannover, Germany.
| | - Nicole Steffensen
- Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Hannover Foundation, Bünteweg 9, 30559 Hannover, Germany
| | - Rabea Imker
- Institute of Biochemistry, University of Veterinary Medicine Hannover, Foundation, Bünteweg 17, 30559 Hannover, Germany; Research Center for Emerging Infections and Zoonoses (RIZ), Bünteweg 17, 30559 Hannover, Germany
| | - Simon Lassnig
- Institute of Biochemistry, University of Veterinary Medicine Hannover, Foundation, Bünteweg 17, 30559 Hannover, Germany; Research Center for Emerging Infections and Zoonoses (RIZ), Bünteweg 17, 30559 Hannover, Germany
| | - Nicole de Buhr
- Institute of Biochemistry, University of Veterinary Medicine Hannover, Foundation, Bünteweg 17, 30559 Hannover, Germany; Research Center for Emerging Infections and Zoonoses (RIZ), Bünteweg 17, 30559 Hannover, Germany.
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2
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van Amersfort K, van der Lee A, Hagen-Plantinga E. Evidence-base for the beneficial effect of nutraceuticals in canine dermatological immune-mediated inflammatory diseases - A literature review. Vet Dermatol 2023. [PMID: 36938651 DOI: 10.1111/vde.13152] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 11/01/2022] [Accepted: 11/26/2022] [Indexed: 03/21/2023]
Abstract
BACKGROUND Immune-mediated inflammatory diseases (IMIDs) are associated with an abnormal immune response, resulting in a disturbed homeostasis and chronic inflammation. Most canine dermatological IMIDs (cDIMIDs), such as allergies, autoimmune and immune-mediated diseases, require long-term treatment with immunosuppressive drugs with potential adverse effects. In general, nutraceuticals are thought to be safe. As a result, there is a tendency for the more frequent use of nutraceuticals in veterinary medicine. OBJECTIVES The aim of this review was to present evidence-based proof for the use of various nutraceuticals in the treatment of cDIMIDs and, where possible, to provide conclusions to guide their use in veterinary dermatological practice. METHODS A comprehensive literature search on common cDIMIDs and nutraceuticals was performed. Only peer-reviewed articles published in English and related to the study topic were included. A total of 64 eligible publications were classified in five categories based on study design and substantively assessed on additional criteria such as standardisation of diets and number of included animals. For final appraisal, classification of major, minor or no evidence was used whereby efficacy was based on clinical outcome measurements. CONCLUSIONS Minor evidence for the beneficial use of several nutraceuticals, including essential fatty acids, niacinamide and probiotics, was found for treatment of specific cDIMIDs. These nutraceuticals may improve clinical signs or reduce the required dose of concurrent medication (e.g. drug-sparing effect) in some dogs. Some nutraceuticals also may be used for long-term maintenance therapy. Despite some promising findings, major evidence for the use of nutraceuticals in cDIMIDs is lacking, warranting further research.
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Gershony LC, Belanger JM, Hytönen MK, Lohi H, Oberbauer AM. Whole Genome Sequencing Reveals Multiple Linked Genetic Variants on Canine Chromosome 12 Associated with Risk for Symmetrical Lupoid Onychodystrophy (SLO) in the Bearded Collie. Genes (Basel) 2021; 12:1265. [PMID: 34440439 PMCID: PMC8394396 DOI: 10.3390/genes12081265] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 08/17/2021] [Accepted: 08/17/2021] [Indexed: 01/16/2023] Open
Abstract
In dogs, symmetrical lupoid onychodystrophy (SLO) results in nail loss and an abnormal regrowth of the claws. In Bearded Collies, an autoimmune nature has been suggested because certain dog leukocyte antigen (DLA) class II haplotypes are associated with the condition. A genome-wide association study of the Bearded Collie revealed two regions of association that conferred risk for disease: one on canine chromosome (CFA) 12 that encompasses the DLA genes, and one on CFA17. Case-control association was employed on whole genome sequencing data to uncover putative causative variants in SLO within the CFA12 and CFA17 associated regions. Genotype imputation was then employed to refine variants of interest. Although no SLO-associated protein-coding variants were identified on CFA17, multiple variants, many with predicted damaging effects, were identified within potential candidate genes on CFA12. Furthermore, many potentially damaging alleles were fully correlated with the presence of DLA class II risk haplotypes for SLO, suggesting that the variants may reflect DLA class II haplotype association with disease or vice versa. Strong linkage disequilibrium in the region precluded the ability to isolate and assess the individual or combined effect of variants on disease development. Nonetheless, all were predictive of risk for SLO and, with judicious assessment, their application in selective breeding may prove useful to reduce the incidence of SLO in the breed.
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Affiliation(s)
- Liza C. Gershony
- Department on Animal Science, University of California, Davis, CA 95616, USA; (L.C.G.); (J.M.B.)
| | - Janelle M. Belanger
- Department on Animal Science, University of California, Davis, CA 95616, USA; (L.C.G.); (J.M.B.)
| | - Marjo K. Hytönen
- Department of Medical and Clinical Genetics, University of Helsinki, 00014 Helsinki, Finland; (M.K.H.); (H.L.)
- Department of Veterinary Biosciences, University of Helsinki, 00014 Helsinki, Finland
- Folkhälsan Research Center, 00290 Helsinki, Finland
| | - Hannes Lohi
- Department of Medical and Clinical Genetics, University of Helsinki, 00014 Helsinki, Finland; (M.K.H.); (H.L.)
- Department of Veterinary Biosciences, University of Helsinki, 00014 Helsinki, Finland
- Folkhälsan Research Center, 00290 Helsinki, Finland
| | - Anita M. Oberbauer
- Department on Animal Science, University of California, Davis, CA 95616, USA; (L.C.G.); (J.M.B.)
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Hunter E, Foster A, O'Dair H, Place E. Are oral essential fatty acids alone an effective treatment for symmetrical lupoid onychodystrophy/onychomadesis? Vet Rec 2020; 186:452-454. [PMID: 32299980 DOI: 10.1136/vr.m967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
| | - Aiden Foster
- Bristol Veterinary School, University of Bristol, Langford, UK
| | - Hilary O'Dair
- Bristol Veterinary School, University of Bristol, Langford, UK
| | - Emma Place
- Bristol Veterinary School, University of Bristol, Langford, UK
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Kummari E, Gibbs A, Riggs C, Fellman C, Stokes J, Thomason J, Wills R, Mackin A, Archer T. Effects of pentoxifylline on whole blood IL-2 and IFN-gamma gene expression in normal dogs. Vet Med Sci 2020; 6:19-24. [PMID: 31621209 PMCID: PMC7036308 DOI: 10.1002/vms3.204] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 07/31/2019] [Accepted: 08/30/2019] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND Pentoxifylline (PTX) is a methylxanthine phosphodiesterase inhibitor that is used as a hemorrheologic and anti-inflammatory agent in veterinary and human medicine. In human studies, PTX has been shown to decrease T-cell production of cytokines such as IL-2 and IFN-γ. A RT-qPCR assay to measure activated T-cell gene expression of IL-2 and IFN-γ has been validated in dogs. OBJECTIVES The goal of this study was to utilize this assay to investigate the effects of PTX on in vitro cytokine gene expression in canine whole blood. METHODS Whole blood from seven healthy dogs was collected and incubated with various concentrations of PTX for 1 hr before activation. PTX concentrations spanned and exceeded blood concentrations achieved when administered at clinically relevant dosages (1, 2, 10, 50 and 200 μg/ml). Cyclosporine was used at a concentration of 500 ng/ml as a positive control. All blood samples, including untreated activated baseline samples, were then activated with phorbol myristate acetate and ionomycin for 5 hrs. RESULTS Analysis of activated whole blood by RT-qPCR revealed that there was not a significant suppression of IL-2 or IFN-γ gene expression at any concentration of PTX when evaluating ΔCt values. All samples exposed to cyclosporine showed significant changes from untreated activated baseline samples, demonstrating marked suppression as the positive control. Cytokine expression, presented as a percentage of untreated activated baseline samples, was also evaluated. After exposure to the highest concentration of PTX (200 μg/ml), median percentage cytokine expression was suppressed to just below 50% of baseline values. This concentration, however, is much higher than blood concentrations reported to be achieved at standardly used pentoxifylline doses. CONCLUSIONS PTX does not appear to significantly suppress T-cell cytokine production in samples from most dogs at clinically relevant drug concentrations. Further testing is needed to establish the full effects of PTX on the immune system in dogs.
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Affiliation(s)
- Evangel Kummari
- Department of Basic SciencesMississippi State University College of Veterinary MedicineMississippi StateMSUSA
| | - Andres Gibbs
- Department of Clinical SciencesMississippi State University College of Veterinary MedicineMississippi StateMSUSA
- Present address:
Randall Veterinary HospitalByramMSUSA
| | - Caitlin Riggs
- Department of Clinical SciencesMississippi State University College of Veterinary MedicineMississippi StateMSUSA
| | - Claire Fellman
- Department of Clinical SciencesMississippi State University College of Veterinary MedicineMississippi StateMSUSA
- Present address:
Department of Clinical SciencesTufts University200 Westboro RoadNorth GraftonMA01536USA
| | - John Stokes
- Department of Basic SciencesMississippi State University College of Veterinary MedicineMississippi StateMSUSA
| | - John Thomason
- Department of Clinical SciencesMississippi State University College of Veterinary MedicineMississippi StateMSUSA
| | - Robert Wills
- Department of Pathobiology and Population MedicineMississippi State University College of Veterinary MedicineMississippi StateMSUSA
| | - Andrew Mackin
- Department of Clinical SciencesMississippi State University College of Veterinary MedicineMississippi StateMSUSA
| | - Todd Archer
- Department of Clinical SciencesMississippi State University College of Veterinary MedicineMississippi StateMSUSA
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6
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Martinez N, McDonald B, Martínez-Taboada F. Exploring the use of essential fatty acids in veterinary dermatology. Vet Rec 2019; 187:190. [PMID: 31690643 DOI: 10.1136/vr.105360] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Revised: 09/20/2019] [Accepted: 10/17/2019] [Indexed: 11/04/2022]
Abstract
BACKGROUND The aim of the study was to discover the extent of use of essential fatty acids (EFAs) in veterinary practice, conditions used in, preparation of EFA supplement used and rationale for their use and to investigate the awareness of the oxidation of some commercial fish oil supplement preparations. METHODS A web-based questionnaire was distributed via email to a dermatology list server and posted to veterinary Facebook groups with questions relating to the use of EFAs, supplement choice, conditions used in, the level of importance of various factors regarding their use and awareness of their oxidation. RESULTS There were 309 responses from 32 countries. EFA supplements were used by 92.2 per cent of respondents. The most commonly used preparation of EFA supplementation was veterinary oral supplements (75.1 per cent), followed by veterinary diets (14.4 per cent), shop bought fish oil supplements (7.7 per cent), enhancing the diet with oily fish (2.5 per cent) and finally using a commercial pet food (0.3 per cent). Only 46.3 per cent of respondents who used them were aware of the oxidation of EFAs. Veterinary oral supplements were perceived to be the best preserved, followed by veterinary diets and lastly commercial fish oil supplements. CONCLUSION A large number of respondents advised the use of EFAs for veterinary dermatological conditions but less than 50 per cent were aware of the potential for EFAs to oxidise.
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Affiliation(s)
- Nicola Martinez
- The Veterinary Teaching Hospital, University of Sydney, Sydney, New South Wales, Australia
| | - Beth McDonald
- The Veterinary Teaching Hospital, University of Sydney, Sydney, New South Wales, Australia
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Gershony LC, Belanger JM, Hytönen MK, Lohi H, Oberbauer AM. Novel Locus Associated with Symmetrical Lupoid Onychodystrophy in the Bearded Collie. Genes (Basel) 2019; 10:E635. [PMID: 31443497 PMCID: PMC6770358 DOI: 10.3390/genes10090635] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 08/16/2019] [Accepted: 08/20/2019] [Indexed: 01/19/2023] Open
Abstract
Symmetrical lupoid onychodystrophy (SLO) is characterized by inflammation of the nail bed and nail sloughing that causes affected dogs considerable pain. Disease etiology remains unclear, although an autoimmune component is suspected. A genome-wide association study on Bearded Collies revealed regions of association on canine chromosomes (CFA) 12 and 17. The large region of association on CFA12 likely consists of two smaller linked regions, both of which are also linked to the dog leukocyte antigen (DLA) class II genes. Dogs homozygous for the alternate allele at the top CFA12 SNP also carried two DLA class II risk haplotypes for SLO, and this locus explained most of the increased risk for disease seen throughout the CFA12 region of association. A stronger peak was seen on CFA17 when analysis was done solely on dogs that carried DLA class II risk haplotypes for SLO. The majority of SLO dogs carried a homozygous alternate genotype on CFA12 and at least one CFA17 risk haplotype. Our findings offer progress toward uncovering the genetic basis of SLO. While the contribution of the CFA17 region remains unclear, both CFA12 and CFA17 regions are significantly associated with SLO disease expression in the Bearded Collie and contain potential candidate genes for this disease.
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Affiliation(s)
- Liza C Gershony
- Department of Animal Science, University of California, Davis, CA 95616, USA
- Brazilian National Council for Scientific and Technological Development (CNPq) fellow, Brasilia, DF 71605, Brazil
| | - Janelle M Belanger
- Department of Animal Science, University of California, Davis, CA 95616, USA
| | - Marjo K Hytönen
- Department of Medical and Clinical Genetics, and Department of Veterinary Biosciences, University of Helsinki, 00014 Helsinki, Finland; Folkhälsan Research Center, 00290 Helsinki, Finland
| | - Hannes Lohi
- Department of Medical and Clinical Genetics, and Department of Veterinary Biosciences, University of Helsinki, 00014 Helsinki, Finland; Folkhälsan Research Center, 00290 Helsinki, Finland
| | - Anita M Oberbauer
- Department of Animal Science, University of California, Davis, CA 95616, USA.
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Steimer T, Bauer A, Kienzle E, Mueller RS. Canine symmetrical lupoid onychomadesis in bearded collies. Vet Dermatol 2019; 30:411-e124. [PMID: 31328335 DOI: 10.1111/vde.12779] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/14/2019] [Indexed: 11/30/2022]
Abstract
BACKGROUND Symmetrical lupoid onychomadesis (SLO) is a disease not infrequently seen in bearded collie dogs in Germany. OBJECTIVES The aim of this study was to compare historical and clinical data, as well as the mineral content of the hair and claws of bearded collies with SLO with that of normal control dogs. ANIMALS Twenty-eight affected bearded collie dogs and 39 control dogs. METHODS AND MATERIALS Owners completed an extensive questionnaire regarding upbringing, environmental conditions and diets. Claw specimens were obtained by claw trimming or gathering lost claws; hairs were obtained by plucking samples from several areas of the body; samples were converted to ash and evaluated in an atomic absorption spectrophotometer. RESULTS Clinical signs in affected dogs eventually involved all claws on all paws. In twelve dogs recurrence of onychomadesis was observed. There was no relevant association between gender, housing, diet and health management, physical stress and the development of SLO with exception of the age at which more intense exercise began. The most commonly used treatment combination was fatty acids, pentoxifylline and tetracycline; improvement occurred in 17 animals. Calcium, sodium and phosphorus concentrations were higher in the claws of affected dogs, whereas zinc concentrations were lower. The mineral content of hair samples of the affected dogs was not significantly different than controls. CONCLUSION AND CLINICAL IMPORTANCE Symmetrical lupoid onychomadesis in bearded collies is clinically similar to what has been described in other breeds with regard to clinical signs and response to treatment. Early strenuous activity may increase the risk for disease occurrence in this breed.
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Affiliation(s)
- Tanja Steimer
- Small Animal Medicine Clinic, Centre for Clinical Veterinary Medicine, LMU Munich, Veterinaerstrasse 13, 80539, Munich, Germany
| | - Alexander Bauer
- Statistical Consulting Unit StaBLab, Department of Statistics, LMU Munich, Akademiestrasse 1, 80799, Munich, Germany
| | - Ellen Kienzle
- Institute for Animal Nutrition and Dietetics, Department of Veterinary Sciences, LMU Munich, Schoenleutnerstrasse 8, 85764, Oberschleißheim, Germany
| | - Ralf S Mueller
- Small Animal Medicine Clinic, Centre for Clinical Veterinary Medicine, LMU Munich, Veterinaerstrasse 13, 80539, Munich, Germany
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Gershony LC, Belanger JM, Short AD, Le M, Hytönen MK, Lohi H, Famula TR, Kennedy LJ, Oberbauer AM. DLA class II risk haplotypes for autoimmune diseases in the bearded collie offer insight to autoimmunity signatures across dog breeds. Canine Genet Epidemiol 2019; 6:2. [PMID: 30783534 PMCID: PMC6376674 DOI: 10.1186/s40575-019-0070-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 01/24/2019] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Primary hypoadrenocorticism (Addison's disease, AD) and symmetrical lupoid onychodystrophy (SLO) are two clinical conditions with an autoimmune etiology that occur in multiple dog breeds. In man, autoimmunity is associated with polymorphisms in immune-related genes that result in a reduced threshold for, or defective regulation of, T cell activation. The major histocompatibility complex (MHC) class II genes encode molecules that participate in these functions, and polymorphisms within these genes have been associated with autoimmune conditions in dogs and humans. Bearded collies have a relatively high prevalence of autoimmune diseases, particularly AD and SLO. Our study assessed the relationship between particular MHC (dog leukocyte antigen, DLA) class II haplotypes and the two autoimmune diseases most common in this breed. Moreover, five unrelated breeds at increased risk for AD were studied for comparative purposes and analyzed in the context of extant literature. RESULTS A single DLA class II three-locus haplotype, determined by sequence-based typing, was associated with increased risk for AD (DLA-DRB1*009:01/DQA1*001:01/DQB1*008:02) in bearded collies. Comparative analysis with the five additional breeds showed limited allele sharing, with DQA1*001:01 and DQB1*002:01 being the only alleles observed in all breeds. A distinct three-locus risk haplotype (DLA-DRB1*001:01/DQA1*001:01/DQB1*002:01) was associated with AD in the West Highland white terrier and Leonberger. Two different risk haplotypes were associated with increased risk for SLO in the bearded collie (DLA-DRB1*018:01/DQA1*001:01/DQB1*002:01 and DLA-DRB1*018:01/DQA1*001:01/ DQB1*008:02). CONCLUSION Two-locus DQ haplotypes composed of DLA-DQA1*001:01 in association with DLA-DQB1*002:01 or DLA-DQB1*008:02 make up the four risk haplotypes identified in the present study and are also found in other risk haplotypes previously associated with diabetes mellitus and hypothyroidism across different dog breeds. Our findings build upon previously published data to suggest that this two-locus (DQ) model serves as a good indicator for susceptibility to multiple organ-specific autoimmune diseases in the canine population. However, it is also clear that additional loci are necessary for actual disease expression. Investigation of affected and unaffected dogs carrying these predisposing DQ haplotype signatures may allow for the identification of those additional genetic components that determine autoimmune disease expression and organ specificity.
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Affiliation(s)
- Liza C. Gershony
- Department of Animal Science, University of California, One Shields Ave, Davis, CA 95616 USA
- Brazilian National Council for Scientific and Technological Development (CNPq) fellow, Brasília, Brazil
| | - Janelle M. Belanger
- Department of Animal Science, University of California, One Shields Ave, Davis, CA 95616 USA
| | - Andrea D. Short
- Centre for Integrated Genomic Medical Research, University of Manchester, Manchester, UK
| | - Myly Le
- Department of Animal Science, University of California, One Shields Ave, Davis, CA 95616 USA
| | - Marjo K. Hytönen
- Research Programs Unit, Molecular Neurology, and Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland
- Folkhälsan Institute of Genetics, Helsinki, Finland
| | - Hannes Lohi
- Research Programs Unit, Molecular Neurology, and Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland
- Folkhälsan Institute of Genetics, Helsinki, Finland
| | - Thomas R. Famula
- Department of Animal Science, University of California, One Shields Ave, Davis, CA 95616 USA
| | - Lorna J. Kennedy
- Centre for Integrated Genomic Medical Research, University of Manchester, Manchester, UK
| | - Anita M. Oberbauer
- Department of Animal Science, University of California, One Shields Ave, Davis, CA 95616 USA
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Olivry T, Linder KE, Banovic F. Cutaneous lupus erythematosus in dogs: a comprehensive review. BMC Vet Res 2018; 14:132. [PMID: 29669547 PMCID: PMC5907183 DOI: 10.1186/s12917-018-1446-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 03/26/2018] [Indexed: 12/25/2022] Open
Abstract
Since the first description of discoid lupus erythematosus (LE) in two dogs in 1979, the spectrum of canine cutaneous lupus erythematosus (CLE) variants has expanded markedly. In this review, we first propose an adaptation of the Gilliam-Sontheimer classification of CLE for dogs. We then review the signalment, clinical signs, laboratory and histopathology and treatment outcome of the currently recognized variants of canine CLE, which are vesicular CLE, exfoliative CLE, mucocutaneous LE and facial or generalized discoid LE. We end with a short description of the rare cutaneous manifestations of systemic LE in dogs. Canine CLE variants are heterogeneous, some of them mirror their human counterparts while others appear—thus far—unique to the dog. As most CLE subtypes seem to have a good prognosis after diagnosis, veterinarians are encouraged to become familiar with the spectrum of often-characteristic and unique clinical signs that would permit an early diagnosis and the rapid implementation of an effective treatment.
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Affiliation(s)
- Thierry Olivry
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, 27606, USA. .,Comparative Medicine Institute, North Carolina State University, Raleigh, NC, USA.
| | - Keith E Linder
- Comparative Medicine Institute, North Carolina State University, Raleigh, NC, USA.,Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA
| | - Frane Banovic
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
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Banovic F, Linder KE, Uri M, Rossi MA, Olivry T. Clinical and microscopic features of generalized discoid lupus erythematosus in dogs (10 cases). Vet Dermatol 2016; 27:488-e131. [DOI: 10.1111/vde.12389] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/24/2016] [Indexed: 12/13/2022]
Affiliation(s)
- Frane Banovic
- Department of Small Animal Medicine and Surgery; College of Veterinary Medicine; University of Georgia; 2200 College Station Road Athens GA 30602 USA
- Department of Clinical Sciences; College of Veterinary Medicine; North Carolina State University; 1060 William Moore Drive Raleigh NC 27607 USA
- Comparative Medicine Institute; North Carolina State University; Raleigh NC 27607 USA
| | - Keith E. Linder
- Comparative Medicine Institute; North Carolina State University; Raleigh NC 27607 USA
- Department of Population Health and Pathobiology; College of Veterinary Medicine; North Carolina State University; 1060 William Moore Drive Raleigh NC 27607 USA
| | - Maarja Uri
- Department of Clinical Sciences; College of Veterinary Medicine; North Carolina State University; 1060 William Moore Drive Raleigh NC 27607 USA
- Small Animal Clinic; Estonian University of Life Sciences; Kreutzwaldi 1 Tartu 51014 Estonia
| | - Michael A. Rossi
- Veterinary Skin and Allergy Specialists; Veterinary Referral Center of Colorado; 3550 South Jason Street Englewood CO 80110 USA
| | - Thierry Olivry
- Department of Clinical Sciences; College of Veterinary Medicine; North Carolina State University; 1060 William Moore Drive Raleigh NC 27607 USA
- Comparative Medicine Institute; North Carolina State University; Raleigh NC 27607 USA
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12
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Ziener ML, Dahlgren S, Thoresen SI, Lingaas F. Genetics and epidemiology of hypothyroidism and symmetrical onychomadesis in the Gordon setter and the English setter. Canine Genet Epidemiol 2015; 2:12. [PMID: 26401340 PMCID: PMC4579390 DOI: 10.1186/s40575-015-0025-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Accepted: 07/29/2015] [Indexed: 11/24/2022] Open
Abstract
Background Hypothyroidism is one of the most common endocrine disorders, whereas symmetrical onychomadesis is a rare claw disease in the general dog population. The aims of this study were to estimate the prevalence of hypothyroidism and symmetrical onychomadesis in a birth cohort of 291 Gordon setters at eight years of age. Further, to describe the age at diagnosis of hypothyroidism in the 68 Gordon setters and 51 English setters included in the DLA study. Finally, to elucidate potential associations between dog leukocyte antigen (DLA) class II and hypothyroidism and/or symmetrical onychomadesis in the Gordon setter and the English setter. Results In the birth cohort of eight years old Gordon setters, 2.7 % had hypothyroidism and 8.9 % had symmetrical onychomadesis, but only one out of these 291 dogs (0.3 %) had both diseases. Mean age at diagnosis of hypothyroidism for dogs included in the DLA study was 6.4 years (95 % CI: 5.6-7.2 years) in the Gordon setters and 7.7 years (95 % CI: 7.2-8.2 years) in the English setters. The DLA alleles most associated with hypothyroidism in the Gordon setter and English setter were DLA-DQB1*00201 (OR = 3.6, 95 % CI: 2.1-6.4, p < 0.001) and DLA-DQA1*00101 (OR = 2.9, 95 % CI: 1.3-6.6, p < 0.001), respectively. In the Gordon setter, the haplotype DLA-DRB1*01801/DQA1*00101/DQB1*00802 was significantly associated with both symmetrical onychomadesis (OR = 2.9, 95 % CI: 1.7-5.2, p < 0.001) and with protection against hypothyroidism (OR = 0.3, 95 % CI: 0.2-0.5, p < 0.001). Conclusion Hypothyroidism is a complex disease where DLA genes together with other genes may be involved in the pathogenesis of the disease. In the Gordon setter, one DLA haplotype that was associated with protection against hypothyroidism was also associated with symmetrical onychomadesis. These findings indicate that closely linked genes, instead of or together with the DLA genes themselves, may be associated with hypothyroidism and symmetrical onychomadesis. In a breed where several autoimmune diseases are prevalent all possible associations between DLA genes and actual diseases need to be investigated before DLA is considered used as a tool for marker-assisted selection. Electronic supplementary material The online version of this article (doi:10.1186/s40575-015-0025-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Martine Lund Ziener
- Department of Basic Sciences and Aquatic Medicine, Norwegian University of Life Sciences, Oslo, Norway ; Fredrikstad Animal Hospital, Fredrikstad, Norway
| | - Stina Dahlgren
- Department of Basic Sciences and Aquatic Medicine, Norwegian University of Life Sciences, Oslo, Norway
| | - Stein Istre Thoresen
- Department of Basic Sciences and Aquatic Medicine, Norwegian University of Life Sciences, Oslo, Norway
| | - Frode Lingaas
- Department of Basic Sciences and Aquatic Medicine, Norwegian University of Life Sciences, Oslo, Norway
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Rossi MA, Messinger LM, Linder KE, Olivry T. Generalized Canine Discoid Lupus Erythematosus Responsive to Tetracycline and Niacinamide Therapy. J Am Anim Hosp Assoc 2015; 51:171-5. [DOI: 10.5326/jaaha-ms-6116] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Discoid lupus erythematosus (DLE) is a commonly reported canine autoimmune disease that normally presents with a phenotype consisting of erythema, depigmentation, scaling, erosions/ulcers, and scarring over the nasal planum and the proximal dorsal muzzle. Recently, two cases of a generalized variant of this disease have been reported, whose lesions responded to either systemic glucocorticoids or a combination of topical corticosteroids, topical tacrolimus, and the oral antimalarial hydroxychloroquine. The purpose of this report is to describe an 11 yr old shih tzu that presented with skin lesions consisting of multiple annular, erythematous papules and plaques, hyperpigmentation, adherent scaling, and atrophic scars over the caudal dorsum, flanks, craniodorsal thorax, and lateroproximal extremities. A diagnosis of generalized DLE was made based on the clinical presentation, histopathology, laboratory values, and direct immunofluorescence findings. Treatment consisted of oral tetracycline and oral niacinamide, which resulted in complete remission of clinical signs. This is the first documented report of generalized canine DLE responding to the described immunomodulating regimen. Such a combination might therefore be considered as a glucocorticoid and/or antimalarial alternative for the management of generalized DLE.
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Affiliation(s)
- Michael A. Rossi
- From the Veterinary Skin and Allergy Specialists, Veterinary Referral Center of Colorado, Englewood, CO (M.R., L.M.); and Department of Population Health and Pathobiology (K.L.) and Department of Clinical Sciences (T.O.), North Carolina State University, Raleigh, NC
| | - Linda M. Messinger
- From the Veterinary Skin and Allergy Specialists, Veterinary Referral Center of Colorado, Englewood, CO (M.R., L.M.); and Department of Population Health and Pathobiology (K.L.) and Department of Clinical Sciences (T.O.), North Carolina State University, Raleigh, NC
| | - Keith E. Linder
- From the Veterinary Skin and Allergy Specialists, Veterinary Referral Center of Colorado, Englewood, CO (M.R., L.M.); and Department of Population Health and Pathobiology (K.L.) and Department of Clinical Sciences (T.O.), North Carolina State University, Raleigh, NC
| | - Thierry Olivry
- From the Veterinary Skin and Allergy Specialists, Veterinary Referral Center of Colorado, Englewood, CO (M.R., L.M.); and Department of Population Health and Pathobiology (K.L.) and Department of Clinical Sciences (T.O.), North Carolina State University, Raleigh, NC
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14
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Stern AW, Pieper J. Pathology in practice. Symmetric lupoid onychodystrophy of the claw bed epithelium. J Am Vet Med Assoc 2015; 246:197-9. [PMID: 25554934 DOI: 10.2460/javma.246.2.197] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Adam W Stern
- Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Illinois, Urbana, IL 61802
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15
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Ziener ML, Nødtvedt A. A treatment study of canine symmetrical onychomadesis (symmetrical lupoid onychodystrophy) comparing fish oil and cyclosporine supplementation in addition to a diet rich in omega-3 fatty acids. Acta Vet Scand 2014; 56:66. [PMID: 25280860 PMCID: PMC4189663 DOI: 10.1186/s13028-014-0066-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Accepted: 09/15/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Treatment of symmetrical onychomadesis (symmetrical lupoid onychodystrophy) is a challenging task for dermatologists. The acute phase is characterized by sloughing of claw plates and loose claws have to be removed and secondary infections treated. The goal of long-term treatment is to allow claws to re-grow with normal quality and to achieve life-long lack of recurrence. The aim of this randomized treatment trial was to see if adding fish oil or cyclosporine to a diet rich in omega-3 could improve the treatment outcome of symmetrical onychomadesis in Gordon and English setters. All dogs were fed Eukanuba Veterinary Diets Dermatosis® exclusively during the six month treatment trial. The treatment outcome was measured as the change in number of healthy claws during treatment, as well as the long-term effect on hunting ability and recurrence of onychomadesis. The hypothesis was that cyclosporine provides a stronger and different immune modulating property than fish oil and therefore would give a better treatment outcome in dogs with symmetrical onychomadesis eating a diet rich in omega-3 fatty acids. RESULTS Six Gordon setters and one English setter were treated with 5 mg/kg cyclosporine once daily for six months and seven Gordon setters were treated with 10 ml Dr Baddaky fish oil® once daily for six months. All dogs were evaluated every month and the numbers of healthy claws were recorded. CONCLUSION Cyclosporine and fish oil appeared to be equally effective in treating symmetrical onychomadesis when the dog is fed a diet high in omega-3.
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Affiliation(s)
- Martine L Ziener
- />Fredrikstad Animal Hospital, Wilbergjordet 2, Fredrikstad, NO-1605 Norway
- />Department of Production Animal Clinical Sciences, Norwegian University of Life Sciences, PO Box 8146 Dep, Oslo, NO-0033 Norway
| | - Ane Nødtvedt
- />Department of Production Animal Clinical Sciences, Norwegian University of Life Sciences, PO Box 8146 Dep, Oslo, NO-0033 Norway
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16
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Banovic F, Olivry T, Linder KE. Ciclosporin therapy for canine generalized discoid lupus erythematosus refractory to doxycycline and niacinamide. Vet Dermatol 2014; 25:483-e79. [PMID: 24916384 DOI: 10.1111/vde.12139] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/24/2014] [Indexed: 11/27/2022]
Abstract
BACKGROUND Generalized discoid lupus erythematosus (DLE) is an autoimmune skin disease variant rarely reported in dogs. The antimalarial immunomodulator hydroxychloroquine has been suggested as maintenance therapy for generalized DLE in one dog, but several recurrences were noted in the 1 year follow-up of that patient. HYPOTHESIS/OBJECTIVE To describe the effective treatment of generalized DLE with ciclosporin in one dog. ANIMAL A 6-year-old, castrated male crossbred dog was presented with pruritic, well-demarcated annular to polycyclic, hyperpigmented plaques with marginal erythema on the dorsal head, neck, trunk and medial extremities; these had been nonresponsive to treatment with doxycycline and niacinamide. METHODS Investigation included complete blood count, serum chemistry profile, urinalysis, serum antinuclear antibody test, histopathological examination and direct immunofluorescence testing of skin biopsies. RESULTS The presence of lymphocyte-rich interface dermatitis on histology, together with generalized chronic recurrent hyperpigmented plaques, was consistent with the diagnosis of a generalized variant of DLE. The absence of systemic signs and unremarkable laboratory tests excluded concurrent systemic lupus erythematosus. Treatment was initiated with oral dexamethasone and ciclosporin. After 1 month, dexamethasone was discontinued and oral ketoconazole was added to the therapeutic regimen. Four months later, pruritus and erythema resolved, with most skin lesions becoming impalpable. Over the last 6 months, the patient's DLE was maintained in remission with oral ciclosporin and ketoconazole in combination every 3 days. CONCLUSIONS AND CLINICAL IMPORTANCE The combination of ciclosporin and ketoconazole appeared effective to induce and maintain lesion remission in this dog with generalized DLE.
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Affiliation(s)
- Frane Banovic
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27607, USA; Center for Comparative Medicine and Translational Research, North Carolina State University, Raleigh, NC, USA
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Efficacy of Tetracycline and Niacinamide for the Treatment of Superficial Pemphigus (Pemphigus Foliaceus, Pemphigus Erythematosus) in 34 Dogs (1995-2010). ACTA ACUST UNITED AC 2011. [DOI: 10.2736/jjvd.17.241] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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18
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Wilbe M, Ziener ML, Aronsson A, Harlos C, Sundberg K, Norberg E, Andersson L, Lindblad-Toh K, Hedhammar Å, Andersson G, Lingaas F. DLA class II alleles are associated with risk for canine symmetrical lupoid onychodystrophy [corrected](SLO). PLoS One 2010; 5:e12332. [PMID: 20808798 PMCID: PMC2925901 DOI: 10.1371/journal.pone.0012332] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2010] [Accepted: 07/26/2010] [Indexed: 11/26/2022] Open
Abstract
Symmetrical lupoid onychodystrophy (SLO) is an immune-mediated disease in dogs affecting the claws with a suggested autoimmune aethiology. Sequence-based genotyping of the polymorphic exon 2 from DLA-DRB1, -DQA1, and -DQB1 class II loci were performed in a total of 98 SLO Gordon setter cases and 98 healthy controls. A risk haplotype (DRB1*01801/DQA1*00101/DQB1*00802) was present in 53% of cases and 34% of controls and conferred an elevated risk of developing SLO with an odds ratio (OR) of 2.1. When dogs homozygous for the risk haplotype were compared to all dogs not carrying the haplotype the OR was 5.4. However, a stronger protective haplotype (DRB1*02001/DQA1*00401/DQB1*01303, OR = 0.03, 1/OR = 33) was present in 16.8% of controls, but only in a single case (0.5%). The effect of the protective haplotype was clearly stronger than the risk haplotype, since 11.2% of the controls were heterozygous for the risk and protective haplotypes, whereas this combination was absent from cases. When the dogs with the protective haplotype were excluded, an OR of 2.5 was obtained when dogs homozygous for the risk haplotype were compared to those heterozygous for the risk haplotype, suggesting a co-dominant effect of the risk haplotype. In smaller sample sizes of the bearded collie and giant schnauzer breeds we found the same or similar haplotypes, sharing the same DQA1 allele, over-represented among the cases suggesting that the risk is associated primarily with DLA-DQ. We obtained conclusive results that DLA class II is significantly associated with risk of developing SLO in Gordon setters, thus supporting that SLO is an immune-mediated disease. Further studies of SLO in dogs may provide important insight into immune privilege of the nail apparatus and also knowledge about a number of inflammatory disorders of the nail apparatus like lichen planus, psoriasis, alopecia areata and onycholysis.
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Affiliation(s)
- Maria Wilbe
- Department of Animal Breeding and Genetics, Biomedical Centre, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
| | | | - Anita Aronsson
- Department of Oncology-Pathology, Cancer Centrum Karolinska, Karolinska Institutet, Stockholm, Sweden
| | - Charlotte Harlos
- Department of Animal Breeding and Genetics, Biomedical Centre, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
| | - Katarina Sundberg
- Department of Animal Breeding and Genetics, Biomedical Centre, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
| | - Elin Norberg
- Department of Clinical Sciences, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
| | - Lisa Andersson
- Department of Animal Breeding and Genetics, Biomedical Centre, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
| | - Kerstin Lindblad-Toh
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
- Broad Institute, Cambridge, Massachusetts, United States of America
| | - Åke Hedhammar
- Department of Clinical Sciences, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
| | - Göran Andersson
- Department of Animal Breeding and Genetics, Biomedical Centre, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
| | - Frode Lingaas
- Department of Basic Sciences and Aquatic Medicine, Norwegian School of Veterinary Science, Oslo, Norway
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19
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Ziener ML, Bettenay SV, Mueller RS. Symmetrical onychomadesis in Norwegian Gordon and English setters. Vet Dermatol 2008; 19:88-94. [DOI: 10.1111/j.1365-3164.2008.00650.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Liska DA, Akucewich LH, Marsella R, Maxwell LK, Barbara JE, Cole CA. Pharmacokinetics of pentoxifylline and its 5-hydroxyhexyl metabolite after oral and intravenous administration of pentoxifylline to healthy adult horses. Am J Vet Res 2006; 67:1621-7. [PMID: 16948611 DOI: 10.2460/ajvr.67.9.1621] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To determine serum pharmacokinetics of pentoxifylline and its 5-hydroxyhexyl metabolite in horses after administration of a single IV dose and after single and multiple oral doses. ANIMALS 8 healthy adult horses. PROCEDURES A crossover study design was used with a washout period of 6 days between treatments. Treatments were IV administration of a single dose of pentoxifylline (8.5 mg/kg) and oral administration of generic sustained-release pentoxifylline (10 mg/kg, q 12 h, for 8 days). Blood samples were collected 0, 1, 3, 6, 12, 20, 30, and 45 minutes and 1, 2, 4, 6, 8, and 12 hours after IV administration. For oral administration, blood samples were collected 0, 0.25, 0.5, 0.75, 1, 2, 4, 8, and 12 hours after the first dose and 0, 0.25, 0.5, 0.75, 1, 2, 4, 8, 12, and 24 hours after the last dose. RESULTS Elimination of pentoxifylline was rapid after IV administration. After oral administration, pentoxifylline was rapidly absorbed and variably eliminated. Higher serum concentrations of pentoxifylline and apparent bioavailability were observed after oral administration of the first dose, compared with values after administration of the last dose on day 8 of treatment. CONCLUSIONS AND CLINICAL RELEVANCE In horses, oral administration of 10 mg of pentoxifylline/kg results in serum concentrations equivalent to those observed for therapeutic doses of pentoxifylline in humans. Twice daily administration appears to be appropriate. However, serum concentrations of pentoxifylline appear to decrease with repeated dosing; thus, practitioners may consider increasing the dosage if clinical response diminishes with repeated administration.
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Affiliation(s)
- Dana A Liska
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32610, USA
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