NR ATDM
AU Lewis,V.; Hill,A.F.; Klug,G.M.; Boyd,A.; Masters,C.L.; Collins,S.J.
TI Australian sporadic CJD analysis supports endogenous determinants of molecular-clinical profiles
QU Neurology 2005 Jul 12; 65(1): 113-8
PT journal article
AB OBJECTIVE: To define the protease-resistant prion protein (PrPres) types and associated clinical profiles in Australian patients with sporadic Creutzfeldt-Jakob disease (CJD) to allow comparison with those reported from other continents and concomitantly reaffirm absence of variant CJD (vCJD). METHODS: Reassessment of available clinical and neuropathologic data on patients referred to the Australian National Creutzfeldt-Jakob Disease Registry (ANCJDR) who died between January 1, 1992, and June 30, 2003, was conducted. Molecular classification of PrPres was determined by immunoblot analysis of available frozen brain tissue. Brain homogenate pH and codon 129 genotype on the prion protein gene (PRNP) were established. RESULTS: PrPres patterns in 35 of 37 patients with sporadic CJD conformed to one of three common reported types. Of a range of clinical features assessed, illness duration was the only clinical feature significantly associated with PrPres type. Two patients displayed coexistence of more than one PrP type, with one displaying a novel pattern of three PrPres types in a single brain region. The absence of vCJD was reconfirmed, supported by the lack of the typical PrPres glycoform pattern. CONCLUSIONS: Given Australia's geographic isolation and environmental uniqueness, the general congruity of these results with those reported from other continents suggests that endogenous factors predominantly determine sporadic Creutzfeldt-Jakob disease (CJD) phenotypic subtypes or "strains." These results support a clinicopathologic classification system whereby both PrPres type and codon 129 genotype are utilized to most accurately depict phenotypic subtypes or strains of sporadic CJD.
IN Auch in Australien lassen sich die sCJK-Fälle in die drei offenbar weltweit gültigen Typen einteilen, obwohl man unter 37 zwischen dem 1.1.1992 und dem 30.6.2003 auch 2 Mischformen fand. Fälle von nvCJK wurden in Australien bei der Überprüfung der alten Fälle nicht gefunden.
MH Adult; Aged; Aged, 80 and over; Australia/epidemiology; Blotting, Western; Brain/metabolism/pathology/physiopathology; Codon/genetics; Comparative Study; Creutzfeldt-Jakob Syndrome/*classification/epidemiology/*genetics; Female; Genotype; Geography; Humans; Male; Middle Aged; Neurons/metabolism/pathology; Phenotype; PrPsc Proteins/chemistry/*genetics; Registries/statistics & numerical data; Research Support, Non-U.S. Gov't; Variation (Genetics)/*genetics
AD The Australian National Creutzfeldt-Jakob Disease Registry, Department of Pathology, University of Melbourne, Victoria, Australia.
SP englisch
PO USA