Sporadic Creutzfeldt-Jakob disease: Co-occurrence of different types of PrP Sc in the same brain

Abstract
Article abstract Phenotypic heterogeneity of sporadic Creutzfeldt-Jakob disease (CJD) has been linked to biochemically distinct types of the protease-resistant form of the prion protein (type 1 and type 2 PrPSc). We investigated 14 cases of sporadic CJD and found that both type 1 and type 2 PrPSc coexisted in 5 subjects. The distinct PrPSc isoforms were associated with different patterns of PrP deposition and severity of spongiform changes, suggesting that the PrPSc type plays a central role in determining the neuropathologic profile of CJD.