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Journal of Clinical Microbiology, November 1999, p. 3701-3704, Vol. 37, No. 11
Agence Française de
Sécurité Sanitaire des Aliments, Lyon, France
Received 22 March 1999/Returned for modification 10 May
1999/Accepted 26 July 1999
It has been suggested that specific molecular features could
characterize the protease-resistant prion protein (PrP res)
detected in animal species as well as in humans infected by the
infectious agent strain that causes bovine spongiform encephalopathy
(BSE). Studies of glycoform patterns in such diseases in French cattle and cheetahs, as well as in mice infected by isolates from both species, revealed this characteristic molecular signature. Similar studies of 42 French isolates of natural scrapie, from 21 different flocks in different regions of France, however, showed levels of the
three glycoforms comparable to those found in BSE-linked diseases.
Moreover, the apparent molecular size of the unglycosylated form was
also indistinguishable among all different sheep isolates, as well as
isolates from BSE in cattle. Overall results suggest that scrapie cases
with features similar to those of BSE could be found more frequently in
sheep than previously described.
0095-1137/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.
Similar Signature of the Prion Protein in
Natural Sheep Scrapie and Bovine Spongiform
Encephalopathy-Linked Diseases
*
Corresponding author. Mailing address: AFSSA-Lyon, 31, avenue Tony Garnier, BP 7033, 69342 Lyon Cedex 07, France. Phone: (33) (4) 78-72-65-43. Fax: (33) (4) 78-61-91-45. E-mail:
t.baron{at}lyon.afssa.fr.
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