A new PRNP mutation (G131V) associated with Gerstmann-Sträussler-Scheinker disease.

نویسندگان

  • P K Panegyres
  • K Toufexis
  • B A Kakulas
  • L Cernevakova
  • P Brown
  • B Ghetti
  • P Piccardo
  • S R Dlouhy
چکیده

BACKGROUND Gerstmann-Sträussler-Scheinker disease is a rare form of prion disease. OBJECTIVE To determine the prion mutation in a 51-year-old man without a family history of neurologic disease who died from Gerstmann-Sträussler-Scheinker disease. PATIENT AND METHODS The patient was a 51-year-old man who died after a 9-year illness characterized by dementia and eventually ataxia. Neuropathologic studies were performed, the results of which revealed abundant prion protein-immunopositive amyloid plaques in the cerebellum without spongiform degeneration. RESULTS Genetic analysis of the prion protein gene showed a novel mutation at codon 131 that caused a valine-for-glycine substitution (G131V) and homozygosity at codon 129 (129M). Proteinase K-resistant prion protein was detected by Western blot analysis. CONCLUSIONS This is the first mutation described in the short, antiparallel beta-sheet domain of the prion protein. This report highlights the importance of genetic analysis of patients with atypical dementia even in the absence of a family history.

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عنوان ژورنال:
  • Archives of neurology

دوره 58 11  شماره 

صفحات  -

تاریخ انتشار 2001