Polymorphic distribution of the ovine prion protein ( PrP) gene in scrapie-infected sheep flocks in which embryo transfer was used to circumvent the transmissions of scrapie

The genetic sequence of the ovine prion protein ( PrP) gene between codons 102 and 175 with emphasis on ovine PrP gene codons 136 and 171 was determined, and the polymorphic distribution of the ovine PrP gene in the scrapie-exposed Suffolk embryo donors and offspring from these donors that were tran...

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Veröffentlicht in:Theriogenology 2002-04, Vol.57 (7), p.1865-1875
Hauptverfasser: Wang, Shiquan, Cockett, Noelle E., Miller, Janice M., Shay, Tracy L., Maciulis, Alma, Sutton, Diane L., Foote, Warren C., Holyoak, Gilbert R., Evans, Ronald C., Bunch, Thomas D., Beever, Jonathan E., Call, Jay W., Taylor, William D., Marshall, Michael R.
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container_end_page 1875
container_issue 7
container_start_page 1865
container_title Theriogenology
container_volume 57
creator Wang, Shiquan
Cockett, Noelle E.
Miller, Janice M.
Shay, Tracy L.
Maciulis, Alma
Sutton, Diane L.
Foote, Warren C.
Holyoak, Gilbert R.
Evans, Ronald C.
Bunch, Thomas D.
Beever, Jonathan E.
Call, Jay W.
Taylor, William D.
Marshall, Michael R.
description The genetic sequence of the ovine prion protein ( PrP) gene between codons 102 and 175 with emphasis on ovine PrP gene codons 136 and 171 was determined, and the polymorphic distribution of the ovine PrP gene in the scrapie-exposed Suffolk embryo donors and offspring from these donors that were transferred to scrapie-free recipient ewes was investigated in this study. The most common genotype was AA 136 QQ 171 (70% and 63% in the donor and offspring flocks, respectively), which is considered a high risk genotype in US Suffolk sheep. Although embryos were collected from scrapie-positive donors and many embryos had the high risk genotype, no scrapie occurred in the resulting offspring. Based upon the results of this study, we conclude that vertical transmission of scrapie can be circumvented using embryo transfer procedures even when the offspring have the high risk genotype.
doi_str_mv 10.1016/S0093-691X(02)00673-8
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The most common genotype was AA 136 QQ 171 (70% and 63% in the donor and offspring flocks, respectively), which is considered a high risk genotype in US Suffolk sheep. Although embryos were collected from scrapie-positive donors and many embryos had the high risk genotype, no scrapie occurred in the resulting offspring. 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identifier ISSN: 0093-691X
ispartof Theriogenology, 2002-04, Vol.57 (7), p.1865-1875
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1879-3231
language eng
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source MEDLINE; Elsevier ScienceDirect Journals
subjects Alleles
Animals
DNA sequence
Embryo transfer
Embryo Transfer - veterinary
Female
Gene Frequency
Genotype
Infectious Disease Transmission, Vertical
Ovine prion protein gene (ovine PrP gene)
Polymorphism, Genetic
Prions - genetics
Scrapie
Scrapie - genetics
Scrapie - prevention & control
Scrapie - transmission
Sheep
Suffolk
Tissue and Organ Harvesting - methods
Tissue and Organ Harvesting - veterinary
title Polymorphic distribution of the ovine prion protein ( PrP) gene in scrapie-infected sheep flocks in which embryo transfer was used to circumvent the transmissions of scrapie
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