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Top Companion Anim Med. 2012 Aug;27(3):109-12. doi: 10.1053/j.tcam.2012.04.001. Epub 2012 May 30.

Current status of genetic studies of exocrine pancreatic insufficiency in dogs.

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1
Department of Genetics and Biochemistry, College of Agriculture, Forestry and Life Sciences, Clemson University, Clemson, SC 29634, USA. lclark4@clemson.edu

Abstract

Exocrine pancreatic insufficiency (EPI) is a disorder wherein the pancreas fails to secrete adequate amounts of digestive enzymes. In dogs, EPI is usually the consequence of an autoimmune disease known as pancreatic acinar atrophy. Originally believed to be a simple autosomal recessive disorder, a test-breeding recently revealed that EPI has a more complex mode of inheritance. The contributions of multiple genes, combined with environmental factors, may explain observed variability in clinical presentation and progression of this disease. Research efforts aim to identify genetic variations underlying EPI to assist breeders in their efforts to eliminate this disease from their breed and provide clinicians with new targets for therapeutic intervention and/or disease prevention. Genome-wide linkage, global gene expression, and candidate gene analyses have failed to identify a major locus or genetic variations in German Shepherd Dogs with EPI. Recently, genome-wide association studies revealed numerous genomic regions associated with EPI. Current studies are focused on alleles of the canine major histocompatibility complex. In this article we review findings from scientific investigations into the inheritance and genetic cause(s) of EPI in the purebred dog.

PMID:
23148850
DOI:
10.1053/j.tcam.2012.04.001
[Indexed for MEDLINE]

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