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Rüfenacht S, Welle MM, Thom N, Röthig A. Familiäres Auftreten der Dermatomyositis bei Working Kelpies. TIERAERZTLICHE PRAXIS AUSGABE KLEINTIERE HEIMTIERE 2018; 43:331-6. [DOI: 10.15654/tpk-141112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2014] [Accepted: 02/16/2015] [Indexed: 11/13/2022]
Abstract
ZusammenfassungAcht eng verwandte Mitglieder einer Linie von Working Kelpies zeigten Symptome einer Dermatomyositis in Form von Alopezie, Krusten, Ulzerationen der Haut, Depigmentation von Nasenspiegel und Lefzen, Onychodystrophie und Muskelatrophie, vor allem der Kaumuskeln. Die Symptome waren bei den betroffenen Tieren unterschiedlich stark oder nur teilweise ausgeprägt. Die klinische Diagnose wurde bei drei Hunden durch histologische Untersuchung von Hautbioptaten, nicht jedoch Muskelbioptaten bestätigt. Therapeutisch kamen verschiedene immunmodulatorische Medikamente (Steroide, Ciclosporin, Mycophenolat-Mofetil, Pentoxifyllin, Doxycylin/Niacinamid, Omega-3-Fettsäuren, Vitamin E) mit unterschiedlichem Erfolg zum Einsatz. Bei der Dermatomyositis handelt es sich um eine immunvermittelte Erkrankung mit genetischem Hintergrund bei Mensch und Hund. Die verantwortlichen Gene sind weitgehend unbekannt. Für die Hunderassen Collie und Shetland Sheepdog besteht eine Prädisposition. Zudem wird eine familiäre Häufung beim Beauceron beschrieben. Da die Rasse Working Kelpie im 19. Jahrhundert aus schottischen Hunden des Collie-Typs entstanden ist, wäre eine genetische Prädisposition für die Dermatomyositis erklärbar.
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Evans JM, Noorai RE, Tsai KL, Starr-Moss AN, Hill CM, Anderson KJ, Famula TR, Clark LA. Beyond the MHC: A canine model of dermatomyositis shows a complex pattern of genetic risk involving novel loci. PLoS Genet 2017; 13:e1006604. [PMID: 28158183 PMCID: PMC5315411 DOI: 10.1371/journal.pgen.1006604] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 02/17/2017] [Accepted: 01/24/2017] [Indexed: 01/04/2023] Open
Abstract
Juvenile dermatomyositis (JDM) is a chronic inflammatory myopathy and vasculopathy driven by genetic and environmental influences. Here, we investigated the genetic underpinnings of an analogous, spontaneous disease of dogs also termed dermatomyositis (DMS). As in JDM, we observed a significant association with a haplotype of the major histocompatibility complex (MHC) (DLA-DRB1*002:01/-DQA1*009:01/-DQB1*001:01), particularly in homozygosity (P-val = 0.0001). However, the high incidence of the haplotype among healthy dogs indicated that additional genetic risk factors are likely involved in disease progression. We conducted genome-wide association studies in two modern breeds having common ancestry and detected strong associations with novel loci on canine chromosomes 10 (P-val = 2.3X10-12) and 31 (P-val = 3.95X10-8). Through whole genome resequencing, we identified primary candidate polymorphisms in conserved regions of PAN2 (encoding p.Arg492Cys) and MAP3K7CL (c.383_392ACTCCACAAA>GACT) on chromosomes 10 and 31, respectively. Analyses of these polymorphisms and the MHC haplotypes revealed that nine of 27 genotypic combinations confer high or moderate probability of disease and explain 93% of cases studied. The pattern of disease risk across PAN2 and MAP3K7CL genotypes provided clear evidence for a significant epistatic foundation for this disease, a risk further impacted by MHC haplotypes. We also observed a genotype-phenotype correlation wherein an earlier age of onset is correlated with an increased number of risk alleles at PAN2 and MAP3K7CL. High frequencies of multiple genetic risk factors are unique to affected breeds and likely arose coincident with artificial selection for desirable phenotypes. Described herein is the first three-locus association with a complex canine disease and two novel loci that provide targets for exploration in JDM and related immunological dysfunction.
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Affiliation(s)
- Jacquelyn M. Evans
- Department of Genetics and Biochemistry, Clemson University, Clemson, South Carolina, United States of America
| | - Rooksana E. Noorai
- Department of Genetics and Biochemistry, Clemson University, Clemson, South Carolina, United States of America
- Genomics and Computational Laboratory, Clemson University, Clemson, South Carolina, United States of America
| | - Kate L. Tsai
- Department of Genetics and Biochemistry, Clemson University, Clemson, South Carolina, United States of America
| | - Alison N. Starr-Moss
- Department of Genetics and Biochemistry, Clemson University, Clemson, South Carolina, United States of America
| | - Cody M. Hill
- Department of Genetics and Biochemistry, Clemson University, Clemson, South Carolina, United States of America
| | - Kendall J. Anderson
- Department of Genetics and Biochemistry, Clemson University, Clemson, South Carolina, United States of America
| | - Thomas R. Famula
- Department of Animal Science, University of California, Davis, California, United States of America
| | - Leigh Anne Clark
- Department of Genetics and Biochemistry, Clemson University, Clemson, South Carolina, United States of America
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Bresciani F, Zagnoli L, Fracassi F, Bianchi E, Cantile C, Abramo F, Pietra M. Dermatomyositis-like disease in a Rottweiler. Vet Dermatol 2014; 25:229-e62. [DOI: 10.1111/vde.12128] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/19/2014] [Indexed: 11/27/2022]
Affiliation(s)
- Francesca Bresciani
- Department of Veterinary Medical Sciences; University of Bologna; Via Tolara di Sopra 50 40064 Ozzano dell'Emilia (BO) Italy
| | - Laura Zagnoli
- Department of Veterinary Medical Sciences; University of Bologna; Via Tolara di Sopra 50 40064 Ozzano dell'Emilia (BO) Italy
| | - Federico Fracassi
- Department of Veterinary Medical Sciences; University of Bologna; Via Tolara di Sopra 50 40064 Ozzano dell'Emilia (BO) Italy
| | - Ezio Bianchi
- Department of Veterinary Medical Sciences; University of Parma; Via del Taglio 8 43126 Parma Italy
| | - Carlo Cantile
- Department of Veterinary Sciences; University of Pisa; Viale delle Piagge 2 56124 Pisa Italy
| | - Francesca Abramo
- Department of Veterinary Sciences; University of Pisa; Viale delle Piagge 2 56124 Pisa Italy
| | - Marco Pietra
- Department of Veterinary Medical Sciences; University of Bologna; Via Tolara di Sopra 50 40064 Ozzano dell'Emilia (BO) Italy
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Massey J, Rothwell S, Rusbridge C, Tauro A, Addicott D, Chinoy H, Cooper RG, Ollier WER, Kennedy LJ. Association of an MHC class II haplotype with increased risk of polymyositis in Hungarian Vizsla dogs. PLoS One 2013; 8:e56490. [PMID: 23457575 PMCID: PMC3572995 DOI: 10.1371/journal.pone.0056490] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2012] [Accepted: 01/10/2013] [Indexed: 12/28/2022] Open
Abstract
A breed-specific polymyositis is frequently observed in the Hungarian Vizsla. Beneficial clinical response to immunosuppressive therapies has been demonstrated which points to an immune-mediated aetiology. Canine inflammatory myopathies share clinical and histological similarities with the human immune-mediated myopathies. As MHC class II associations have been reported in the human conditions we investigated whether an MHC class II association was present in the canine myopathy seen in this breed. 212 Hungarian Vizsla pedigree dogs were stratified both on disease status and degree of relatedness to an affected dog. This generated a group of 29 cases and 183 "graded" controls: 93 unaffected dogs with a first degree affected relative, 44 unaffected dogs with a second degree affected relative, and 46 unaffected dogs with no known affected relatives. Eleven DLA class II haplotypes were identified, of which, DLA-DRB1*02001/DQA1*00401/DQB1*01303, was at significantly raised frequency in cases compared to controls (OR = 1.92, p = 0.032). When only control dogs with no family history of the disease were compared to cases, the association was further strengthened (OR = 4.08, p = 0.00011). Additionally, a single copy of the risk haplotype was sufficient to increase disease risk, with the risk substantially increasing for homozygotes. There was a trend of increasing frequency of this haplotype with degree of relatedness, indicating low disease penetrance. These findings support the hypothesis of an immune-mediated aetiology for this canine myopathy and give credibility to potentially using the Hungarian Vizsla as a genetic model for comparative studies with human myositis.
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Affiliation(s)
- Jonathan Massey
- Centre for Integrated Genomic Medical Research (CIGMR), Institute of Population Health, Faculty of Medical and Human Sciences, The University of Manchester, Manchester, United Kingdom.
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Tsai KL, Noorai RE, Starr-Moss AN, Quignon P, Rinz CJ, Ostrander EA, Steiner JM, Murphy KE, Clark LA. Genome-wide association studies for multiple diseases of the German Shepherd Dog. Mamm Genome 2012; 23:203-11. [PMID: 22105877 PMCID: PMC3509149 DOI: 10.1007/s00335-011-9376-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2011] [Accepted: 10/18/2011] [Indexed: 01/02/2023]
Abstract
The German Shepherd Dog (GSD) is a popular working and companion breed for which over 50 hereditary diseases have been documented. Herein, SNP profiles for 197 GSDs were generated using the Affymetrix v2 canine SNP array for a genome-wide association study to identify loci associated with four diseases: pituitary dwarfism, degenerative myelopathy (DM), congenital megaesophagus (ME), and pancreatic acinar atrophy (PAA). A locus on Chr 9 is strongly associated with pituitary dwarfism and is proximal to a plausible candidate gene, LHX3. Results for DM confirm a major locus encompassing SOD1, in which an associated point mutation was previously identified, but do not suggest modifier loci. Several SNPs on Chr 12 are associated with ME and a 4.7 Mb haplotype block is present in affected dogs. Analysis of additional ME cases for a SNP within the haplotype provides further support for this association. Results for PAA indicate more complex genetic underpinnings. Several regions on multiple chromosomes reach genome-wide significance. However, no major locus is apparent and only two associated haplotype blocks, on Chrs 7 and 12 are observed. These data suggest that PAA may be governed by multiple loci with small effects, or it may be a heterogeneous disorder.
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Affiliation(s)
- Kate L. Tsai
- Department of Genetics and Biochemistry, College of Agriculture, Forestry and Life Sciences, Clemson University, Clemson, SC 29634, USA
| | - Rooksana E. Noorai
- Department of Genetics and Biochemistry, College of Agriculture, Forestry and Life Sciences, Clemson University, Clemson, SC 29634, USA
| | - Alison N. Starr-Moss
- Department of Genetics and Biochemistry, College of Agriculture, Forestry and Life Sciences, Clemson University, Clemson, SC 29634, USA
| | - Pascale Quignon
- Cancer Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA. Institut de Génétique et Développement de Rennes, CNRS-UMR6061, Université de Rennes 1, 2 avenue Prof. Léon Bernard, CS34317, Rennes Cedex 35043, France
| | - Caitlin J. Rinz
- Department of Genetics and Biochemistry, College of Agriculture, Forestry and Life Sciences, Clemson University, Clemson, SC 29634, USA
| | - Elaine A. Ostrander
- Cancer Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Jörg M. Steiner
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843, USA
| | - Keith E. Murphy
- Department of Genetics and Biochemistry, College of Agriculture, Forestry and Life Sciences, Clemson University, Clemson, SC 29634, USA
| | - Leigh Anne Clark
- Department of Genetics and Biochemistry, College of Agriculture, Forestry and Life Sciences, Clemson University, Clemson, SC 29634, USA
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Ramsell KD, Garner MM. Disseminated idiopathic myofasciitis in ferrets. Vet Clin North Am Exot Anim Pract 2010; 13:561-75. [PMID: 20682436 DOI: 10.1016/j.cvex.2010.05.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
First described in 2003, disseminated idiopathic myofasciitis (DIM) has emerged as a new disease in young, domestic ferrets. DIM is a severe inflammatory condition that affects primarily muscles and surrounding connective tissues. The disease is characterized by rapid onset of clinical signs, high fever, neutrophilic leukocytosis, and general lack of response to therapeutic intervention. Until recently DIM was considered fatal, but a few surviving ferrets indicate there may be an effective treatment protocol. DIM is suspected to be an immune-mediated disease, but the etiopathogenesis is not known. This article reviews clinical and pathologic findings in DIM patients, covers recommended diagnostic procedures and clinical management of ferrets with DIM, and discusses potential etiologies for this newly recognized disease in ferrets.
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Affiliation(s)
- Katrina D Ramsell
- Northwest Exotic Pet Vet LLC, 6895 SW 160th Avenue, Beaverton, OR 97007, USA
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Toyoda K, Uchida K, Matsuki N, Sakai H, Kitagawa M, Saito M, Sasaki J, Nakayama H. Inflammatory Myopathy with Severe Tongue Atrophy in Pembroke Welsh Corgi Dogs. J Vet Diagn Invest 2010; 22:876-85. [DOI: 10.1177/104063871002200605] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
A disease characterized by tongue and facial muscle atrophy has been recognized sporadically among Pembroke Welsh Corgi (PWC) dogs in Japan. The present study describes the pathologic findings of this canine syndrome. Histopathologic examinations were performed in 2 dogs, including a case of muscular biopsy. Identification and characterization of autoantibodies were attempted by fluorescent antibody test (FAT) and Western blot (WB) by using sera from 7 PWC dogs with typical clinical features, 6 PWC dogs with other clinical signs, and 2 from other breeds with polymyositis. Clinically, the 7 affected PWC dogs exhibited dysphagia with severe tongue atrophy, facial muscular atrophy, and occasional walking difficulty. Histopathologic examinations of the 2 dogs with clinical symptoms revealed moderate to severe inflammatory lesions characterized by lymphohistiocytic infiltration and muscular atrophy in the tongue and/or femoral muscles. The tongue lesions were very severe and accompanied by diffuse fatty infiltration. There were no major lesions in the nervous tissues examined. By FAT, an autoantibody against the cross striation of skeletal muscle was detected in sera from 5 affected PWC dogs. By using WB analysis, the autoantibodies recognized a 42-kDa molecule in striated muscle but not in the nervous tissues. All of the findings indicated that the unique disease of PWC dogs might be generalized inflammatory myopathy, whereas the detailed etiology concerning the dominant involvement of tongue muscles and the role of the autoantibody in the canine disease remain to be clarified.
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Affiliation(s)
| | | | | | - Hideo Sakai
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo; Isahaya Pet Clinic, Isahaya, Nagasaki, Japan
| | - Masato Kitagawa
- Laboratory Comprehensive Veterinary Clinical Studies, Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, Fujisawa, Kanagawa, Japan
| | - Miyoko Saito
- Department of Veterinary Surgery, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | - Jun Sasaki
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo; Isahaya Pet Clinic, Isahaya, Nagasaki, Japan
- Department of Veterinary Pathology, Faculty of Agriculture, Iwate University, Morioka, Iwate, Japan
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Yoon JS, Minami T, Takizawa Y, Sekiguchi M, Yabuzoe A, Ide K, Nishifuji K, Iwasaki T. Two dogs with juvenile-onset skin diseases with involvement of extremities. J Vet Med Sci 2010; 72:1513-6. [PMID: 20622478 DOI: 10.1292/jvms.10-0041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Two dogs of juvenile-onset skin diseases with involvement of extremities were examined by histopathological, immunohistochemical and ultrastructural analyses. Clinically, both cases showed alopecia and crusts on the face and extremities. Case 1 showed histopathology of dermo-epidermal separation. Ultrastructural analysis revealed that the clefts were recognized between hemidesmosomes and lamina densa. In case 2, histopathology showed follicular atrophy, vacuolar degeneration at lower epidermis and masseter muscle degeneration, without remarkable ultrastructural abnormalities in basement membrane zone of the skin. Thus, the findings in case 1 were compatible to those in junctional epidermolysis bullosa, while those in case 2 were compatible to dermatomyositis-like disease. Combination of histopathological and ultrastructural analyses was useful to distinguish the diseases in two dogs.
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Affiliation(s)
- Ji-Seon Yoon
- Laboratory of Veterinary Internal Medicine, Tokyo University of Agriculture and Technology, Tokyo, Japan
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