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Review
. 2007 Jul;8(7):552-61.
doi: 10.1038/nrm2204.

Insights into prion strains and neurotoxicity

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Review

Insights into prion strains and neurotoxicity

Adriano Aguzzi et al. Nat Rev Mol Cell Biol. 2007 Jul.

Abstract

Transmissible spongiform encephalopathies (TSEs) are neurodegenerative diseases that are caused by prions and affect humans and many animal species. It is now widely accepted that the infectious agent that causes TSEs is PrP(Sc), an aggregated moiety of the host-derived membrane glycolipoprotein PrP(C). Although PrP(C) is encoded by the host genome, prions themselves encipher many phenotypic TSE variants, known as prion strains. Prion strains are TSE isolates that, after inoculation into distinct hosts, cause disease with consistent characteristics, such as incubation period, distinct patterns of PrP(Sc) distribution and spongiosis and relative severity of the spongiform changes in the brain. The existence of such strains poses a fascinating challenge to prion research.

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