Atypical status of bovine spongiform encephalopathy in Poland: a molecular typing study

Atypical status of bovine spongiform encephalopathy in Poland: a molecular typing study The aim of this study was to analyze molecular features of protease-resistant prion protein (PrP res ) in Western blots of BSE cases diagnosed in Poland with respect to a possible atypical status. Confirmed cases were analyzed by Western blotting with several monoclonal antibodies directed at N-terminal and core epitopes of prion protein (PrP). Most cases showed the classical glycoprofile characterized by the dominance of the di- over the monoglycosylated PrP res band, yielding di-/mono- ratios well above 2 and by reactivity with antibodies having their epitopes in bovine PrP region 110–242 (C-type cases). Surprisingly, seven cases of BSE were atypical. Six were classified as L-type based on a slightly lower molecular mass (M r ) of the non- glycosylated band with respect to C-types and a conspicuously low di-/mono- ratio of glycosylated PrP res bands approaching unity. One case was classified as H-type because of a higher M r of PrP res bands on the blot when compared with C-type cases. A characteristic epitope of H-type PrP res occurred in the 101–110 region of PrP for which only antibody 12B2 had a sufficient affinity. The occurrence of atypical cases only in animals 9 years of age and older raises questions about the mechanisms of prion diseases and the origin of BSE. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Atypical status of bovine spongiform encephalopathy in Poland: a molecular typing study

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Publisher
Springer-Verlag
Copyright
Copyright © 2008 by Springer-Verlag
Subject
Biomedicine; Virology; Medical Microbiology; Infectious Diseases
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-007-1062-6
Publisher site
See Article on Publisher Site

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