Alleles of the major histocompatibility complex play a role in the pathogenesis of pancreatic acinar atrophy in dogs

Exocrine pancreatic insufficiency (EPI) is a disease wherein pancreatic acinar cells fail to synthesize and secrete sufficient amounts of digestive enzymes for normal digestion of food. EPI affects many dog breeds, with a dramatically higher prevalence in the German shepherd dog (GSD) population. In...

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Veröffentlicht in:Immunogenetics (New York) 2013-07, Vol.65 (7), p.501-509
Hauptverfasser: Tsai, Kate L., Starr-Moss, Alison N., Venkataraman, Gopalakrishnan M., Robinson, Christopher, Kennedy, Lorna J., Steiner, Jörg M., Clark, Leigh Anne
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container_issue 7
container_start_page 501
container_title Immunogenetics (New York)
container_volume 65
creator Tsai, Kate L.
Starr-Moss, Alison N.
Venkataraman, Gopalakrishnan M.
Robinson, Christopher
Kennedy, Lorna J.
Steiner, Jörg M.
Clark, Leigh Anne
description Exocrine pancreatic insufficiency (EPI) is a disease wherein pancreatic acinar cells fail to synthesize and secrete sufficient amounts of digestive enzymes for normal digestion of food. EPI affects many dog breeds, with a dramatically higher prevalence in the German shepherd dog (GSD) population. In this breed and perhaps others, EPI most often results from degeneration of the acinar cells of the pancreas, a hereditary disorder termed pancreatic acinar atrophy (PAA). Evidence of lymphocytic infiltration indicates that PAA is an autoimmune disease, but the genetic etiology remains unclear. Data from global gene expression and single nucleotide polymorphism profiles in the GSD suggest the involvement of the major histocompatibility complex [MHC; dog leukocyte antigen (DLA)]. To determine if alleles of the MHC influence development of EPI, genotyping of polymorphic class I (DLA-88) and II loci (DLA-DRB1, DLA-DQA1, and DLA-DQB1) was carried out for 70 affected and 63 control GSDs, and four-locus haplotypes were determined. One haplotype containing a novel allele of DLA-88 is very highly associated with EPI (OR > 17; P  = 0.000125), while two haplotypes were found to confer protection from EPI ( P  = 0.00087 and 0.0115). Described herein is the genotyping of MHC class I and II loci in a GSD cohort, establishment of four-locus haplotypes, and association of alleles/haplotypes with EPI.
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EPI affects many dog breeds, with a dramatically higher prevalence in the German shepherd dog (GSD) population. In this breed and perhaps others, EPI most often results from degeneration of the acinar cells of the pancreas, a hereditary disorder termed pancreatic acinar atrophy (PAA). Evidence of lymphocytic infiltration indicates that PAA is an autoimmune disease, but the genetic etiology remains unclear. Data from global gene expression and single nucleotide polymorphism profiles in the GSD suggest the involvement of the major histocompatibility complex [MHC; dog leukocyte antigen (DLA)]. To determine if alleles of the MHC influence development of EPI, genotyping of polymorphic class I (DLA-88) and II loci (DLA-DRB1, DLA-DQA1, and DLA-DQB1) was carried out for 70 affected and 63 control GSDs, and four-locus haplotypes were determined. 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One haplotype containing a novel allele of DLA-88 is very highly associated with EPI (OR &gt; 17; P  = 0.000125), while two haplotypes were found to confer protection from EPI ( P  = 0.00087 and 0.0115). 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subjects Acinar Cells - immunology
Acinar Cells - pathology
Allergology
Amino Acid Sequence
Amino Acid Substitution
Animals
Antigens
Atrophy
Autoimmune Diseases - genetics
Autoimmune Diseases - immunology
Autoimmune Diseases - pathology
Autoimmune Diseases - veterinary
Base Sequence
Biomedical and Life Sciences
Biomedicine
Biopsy
Breeding
Cell Biology
Disease
Dog Diseases - genetics
Dog Diseases - immunology
Dog Diseases - pathology
Dogs - genetics
Dogs - immunology
Enzymes
Exocrine Pancreatic Insufficiency - genetics
Exocrine Pancreatic Insufficiency - immunology
Exocrine Pancreatic Insufficiency - pathology
Exocrine Pancreatic Insufficiency - veterinary
Female
Gene Function
Genes
Genotype
Haplotypes
Haplotypes - genetics
Histocompatibility Antigens Class I - genetics
Histocompatibility Antigens Class I - immunology
Human Genetics
Immunology
Leukocytes
Lymphocytes
Male
Medical research
Molecular Sequence Data
Original Paper
Pancreas
Pathogenesis
Peptides
Point Mutation
Polymorphism
Polymorphism, Single Nucleotide
Sequence Alignment
Sequence Homology
Species Specificity
Veterinary medicine
title Alleles of the major histocompatibility complex play a role in the pathogenesis of pancreatic acinar atrophy in dogs
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