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[Human transmissible subacute spongiform encephalopathy]

D Dormont1

  • 1Centre de Recherches du Service de Santé des Armées, Commissariat á l'Energie Atomique, DSV/DPTE, Fontenay-aux-Roses.

Bulletin De L'Academie Nationale De Medecine
|May 1, 1994
PubMed
Summary
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Human transmissible spongiform encephalopathies (TSEs) are fatal neurodegenerative diseases. The prion protein (PrP) accumulation is the only hallmark, with no known treatment available.

Area of Science:

  • Neuroscience
  • Pathology
  • Molecular Biology

Context:

  • Human transmissible spongiform encephalopathies (TSEs) are a group of rare, fatal, subacute neurodegenerative diseases affecting the central nervous system (CNS).
  • These diseases include Creutzfeldt-Jakob disease (CJD), Kuru, Gerstmann-Sträussler-Scheinker syndrome (GSS), and Fatal Familial Insomnia (FFI).
  • Neuropathological hallmarks include neuronal vacuolation, neuronal death, and gliosis, without inflammatory or demyelinating signs.

Purpose:

  • To review the characteristics of human TSEs, focusing on their neuropathology, transmissibility, and the molecular basis of the disease.
  • To highlight the role of the prion protein (PrP) as the sole detectable marker in TSEs.
  • To discuss the genetic basis of inherited forms and the ongoing debate regarding the nature of the transmissible agent.

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Summary:

  • Human TSEs are invariably fatal CNS diseases characterized by specific neuropathological changes.
  • The accumulation of proteinase K-resistant prion protein (PrP-res) is the only consistent molecular abnormality identified.
  • These diseases are transmissible to animals, and iatrogenic cases have been documented, underscoring the need for understanding transmission routes.

Impact:

  • Understanding the role of PrP-res is crucial for developing diagnostic tools and potential therapeutic strategies for TSEs.
  • Identifying mutations in the prion protein gene (PRNP) aids in diagnosing inherited forms of TSEs.
  • Further research into the nature of the transmissible agent is essential for effective prevention and control of these devastating diseases.