Volume 5, Issue 4 pp. 459-466
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Neuropathological Diagnostic Criteria for Creutzfeldt-Jakob Disease (CJD) and Other Human Spongiform Encephalopathies (Prion Diseases)

Herbert Budka

Corresponding Author

Herbert Budka

Institute of Neurology, University of Vienna, Vienna, Austria

Corresponding author: Dr. Herbert Budka, Institute of Neurology, University of Vienna, Neues AKH, POB 48, A–1097 Wien, Austria. Tel.+43–1–40400–5501; Fax +43–1–40400–5511Search for more papers by this author
Adriano Aguzzi

Adriano Aguzzi

Institute of Neuropathology, University of Zurich, Zurich, Switzerland

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Paul Brown

Paul Brown

Laboratory of Central Nervous System Studies, NINDS, NIH, Bethesda, MD, USA

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Jean-Marie Brucher

Jean-Marie Brucher

Neuropathology Unit, Catholic University Louvain, Brussels, Belgium

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Orso Bugiani

Orso Bugiani

National Institute of Neurology C. Besta, Milan, Italy

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Filippo Gullotta

Filippo Gullotta

Institute of Neuropathology, University of Müster, Münster, FRG

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Matti Haltia

Matti Haltia

Institute of Pathology, University of Helsinki, Helsinki, Finland

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Jean-Jacques Hauw

Jean-Jacques Hauw

Neuropathological Laboratory R. Escourolle, Hǒpital de la Salpětriere, Paris, France

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James W. Ironside

James W. Ironside

Neuropathology Laboratory, Department of Pathology, Western General Hospital, Edinburgh, UK

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Kurt Jellinger

Kurt Jellinger

Neuropathological Laboratory, Department of Neurology, Lainz Hospital, Vienna, Austria

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Hans A. Kretzschmar

Hans A. Kretzschmar

Institute of Neuropathology, University of Göttingen, Göttingen, FRG

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Peter L. Lantos

Peter L. Lantos

Department of Neuropathology, Institute of Psychiatry, University of London, London, UK

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Carlo Masullo

Carlo Masullo

Institute of Neurology, Catholic University of the Sacred Heart, Rome, Italy

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Wolfgang Schlote

Wolfgang Schlote

Neurological Institute, University of Frankfurt, Frankfurt, FRG

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Jun Tateishi

Jun Tateishi

Department of Neuropathology, Institute of Neurology, Kyushu University, Fukuoka, Japan

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Roy O. Weller

Roy O. Weller

Neuropathology, Southampton University Hospital, Southampton, UK

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First published: October 1995
Citations: 321

Abstract

Neuropathological diagnostic criteria for Creutzfeldt-Jakob disease (CJD) and other human transmissible spongiform encephalopathies (prion diseases) are proposed for the following disease entities: CJD - sporadic, iatrogenic (recognised risk) or familial (same disease in 1st degree relative): spongiform encephalopathy in cerebral and/or cerebellar cortex and/or subcortical grey matter; or encephalopathy with prion protein (PrP) immuno-reactivity (plaque and/or diffuse synaptic and/or patchy/perivacuolar types). Gerstmann-Sträussler-Scheinker disease (GSS) (in family with dominantly inherited progressive ataxia and/or dementia): encephalo(myelo)pathy with multicentric PrP plaques. Familial fatal insomnia (FFI) (in member of a family with PRNP178 mutation): thalamic degeneration, variable spongiform change in cerebrum. Kuru (in the Fore population).

Without PrP data, the crucial feature is the spongiform change accompanied by neuronal loss and gliosis. This spongiform change is characterised by diffuse or focally clustered small round or oval vacuoles in the neuropil of the deep cortical layers, cerebellar cortex or subcortical grey matter, which might become confluent. Spongiform change should not be confused with non-specific spon-giosis. This includes status spongiosus (“spongiform state”), comprising irregular cavities in gliotic neuropil following extensive neuronal loss (including also lesions of “burnt-out” CJD), “spongy” changes in brain oedema and metabolic encephalopathies, and artefacts such as superficial cortical, perineuronal, or perivascular vacuolation; focal changes indistinguishable from spongiform change may occur in some cases of Alzheimer's and diffuse Lewy body diseases. Very rare cases might not be diagnosed by these criteria. Then confirmation must be sought by additional techniques such as PrP immunoblotting, preparations for electron microscopic examination of scrapie associated fibrils (SAF), molecular biologic studies, or experimental transmission.

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