title: PrP genotypes of captive and free-ranging Rocky Mountain elk (Cervus elaphus nelsoni) with chronic wasting disease.
abstract: The PrP gene encodes the putative causative agent of the transmissible spongiform encephalopathies (TSEs), a heterogeneous group of fatal, neurodegenerative disorders including human Creutzfeldt-Jakob disease, bovine spongiform encephalopathy, ovine scrapie and chronic wasting disease (CWD) of North American deer and elk. Polymorphisms in the PrP gene are associated with variations in relative susceptibility, pathological lesion patterns, incubation times and clinical course of TSEs of humans, mice and sheep. Sequence analysis of the PrP gene from Rocky Mountain elk showed only one amino acid change (Met to Leu at cervid codon 132). Homozygosity for Met at the corresponding polymorphic site (Met to Val) in humans (human codon 129) predisposes exposed individuals to some forms of Creutzfeldt-Jakob disease. In this study, Rocky Mountain elk homozygous for PrP codon 1 32 Met were over-represented in both free-ranging and farm-raised CWD-affected elk when compared to unaffected control groups.
authors.affiliation: USDA, Agricultural Research Service, Animal Disease Research Unit, 337 Bustad Hall WSU, Pullman, WA 99164-7030, USA1.
authors.forename: K I
authors.initials: KI
authors.lastname: O'Rourke
authors.affiliation: Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, WA 99164-7040, USA2.
authors.forename: T E
authors.initials: TE
authors.lastname: Besser
authors.affiliation: Colorado Division of Wildlife, 317 W. Prospect, Fort Collins, CO 80526, USA3.
authors.forename: M W
authors.initials: MW
authors.lastname: Miller
authors.affiliation: South Dakota Animal Industry Board, 411 S. Fort St, Pierre, SD 57501, USA4.
authors.forename: T F
authors.initials: TF
authors.lastname: Cline
authors.affiliation: Diagnostic Laboratories, College of Veterinary Medicine and Biomedical Sciences, Fort Collins, CO 80523, USA5.
authors.forename: T R
authors.initials: TR
authors.lastname: Spraker
authors.affiliation: USDA, APHIS National Veterinary Services Laboratories, Ames, IA 50010, USA6.
authors.forename: A L
authors.initials: AL
authors.lastname: Jenny
authors.affiliation: Colorado Division of Wildlife, 317 W. Prospect, Fort Collins, CO 80526, USA3.
authors.forename: M A
authors.initials: MA
authors.lastname: Wild
authors.affiliation: Elk Research Council, North American Elk Breeders' Association, 3901 Hwy 29, Alexandria, MN 56308, USA 7.
authors.forename: G L
authors.initials: GL
authors.lastname: Zebarth
authors.affiliation: Wyoming State Veterinary Laboratory, University of Wyoming, 1174 Snowy Range Road, Laramie, WY 82070, USA8.
authors.forename: E S
authors.initials: ES
authors.lastname: Williams
mesh_terms: D000818:Animals; D001483:Base Sequence; D002908:Chronic Disease; D003670:Deer; D005838:Genotype; D008969:Molecular Sequence Data; D017096:Prion Diseases / Q000235:genetics*; D011328:Prions / Q000145:classification / Q000235:genetics*; D019282:Wasting Syndrome / Q000209:etiology / Q000662:veterinary
chemical_list: D011328:Prions