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Sporadic Creutzfeldt-Jakob disease with MM1-type prion protein and plaques

C Ishida1, A Kakishima, S Okino

  • 1Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Science, Ishikawa 920-8640, Japan. cishida@noto-hospital.jp

Neurology
|February 13, 2003
PubMed

Insights

This study details a unique case of sporadic Creutzfeldt-Jakob disease (CJD) in a 75-year-old woman. The patient presented with plaque-forming MM1-type prion protein (PrP), a rare presentation for sporadic CJD.

Area of Science:

  • Neurology
  • Prion Diseases
  • Molecular Biology

Background:

  • Creutzfeldt-Jakob disease (CJD) is a rare, fatal neurodegenerative prion disease.
  • Sporadic CJD accounts for the majority of cases, with diverse clinicopathological phenotypes.
  • Prion protein (PrP) genotype and PrP type are key determinants of CJD classification.

Observation:

  • A 75-year-old woman presented with atypical sporadic CJD.
  • Her case was characterized by MM1-type prion protein (PrP) and the presence of PrP plaques.
  • This represents the first reported instance of sporadic CJD with plaque-forming MM1-type PrP.

Findings:

  • The patient's MM1-type PrP exhibited plaque formation, a feature not typically associated with the MM1 subtype of sporadic CJD.
  • This unique presentation suggests potential links to other CJD subtypes or host factors.

Implications:

  • This finding suggests a possible shared prion strain with plaque-forming forms of dural graft-associated CJD.
  • Alternatively, shared host genetic factors, independent of PrP genotype, may contribute to this phenotype.
  • Further research is needed to elucidate the mechanisms underlying this rare CJD presentation.

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