时间 : 2009-12-07 08:20:38 来源:web.haoyisheng.com
AsofDecember31,1998,35deathshadbeenattributedtonewvariantCreutzfeldt-Jakobdisease(nvCJD)intheUnitedKingdom,ofwhich33caseshadbeenneuropathologicallyconfirmedand2classifiedasprobablenvCJD.Fifteencasesweremaleand20female.Themedianillnessdurationwas14months(range,8-38months)andthemedianageatdeathwas29years(range,18-53years).Thedinicalfeatureswereconsistentwithpreviousdescriptions.Innearlyallcases,therewereearlypsychiatricsymptomsafteramedianperiodof6monthsataxiadeveloped,followedbyinvoluntarymovementsandcognitiveimpairment.Electroencephalogramsdidnotshowthe"typical"appearancesfoundinsporadicCJD,abouthalfthecasestestedhadapositive14-3-3immunoassay,andover70%ofcaseshadbilateralpulvinarhighsignalonmagneticresonancebrainscanning.Prionproteingeneanalysisshowedthatallcaseswerehomozygousformethionineatcodon129.DiagnosticcriteriafornvCJDhavebeenformulated,whichhaveahighsensitivityandspecificity.
[引自AnnNeurol2000May;47(5):575-82]
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