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[Unconventional transmissible agents or prions]

D Dormont1

  • 1Service de Neurovirologie, Commissariat à l'Energie atomique, Centre de recherches du Service de Santé des Armées, Fontenay-aux-Roses.

Presse Medicale (Paris, France : 1983)
|March 22, 1997
PubMed
Summary
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Prions, unconventional transmissible agents, cause rare neurodegenerative diseases like spongiform encephalopathies. Research focuses on the prion protein (PrP) and its role in disease susceptibility and pathology.

Area of Science:

  • Neurodegenerative Diseases
  • Prion Biology
  • Infectious Agents

Context:

  • Subacute transmissible spongiform encephalopathies (TSEs) are rare neurodegenerative diseases affecting humans and animals.
  • These conditions are caused by unconventional transmissible agents, known as prions.
  • TSEs are characterized by long incubation periods and manifest as central nervous system deficits.

Purpose:

  • To describe the characteristics of TSEs and the nature of the transmissible agents involved.
  • To highlight the role of the prion protein (PrP) in disease pathogenesis and host susceptibility.
  • To present the ongoing debate regarding the composition of the transmissible agent.

Summary:

  • TSEs exhibit characteristic neuropathological features including cerebral cortex vacuolization, neuronal loss, and astrogliosis.

Related Experiment Videos

  • A host protein, the prion protein (PrP), accumulates in the central nervous system of infected individuals.
  • The gene encoding PrP is a key determinant of genetic susceptibility to these agents.

    • Impact:

    • Understanding prion diseases is crucial for developing diagnostic and therapeutic strategies.
    • Clarifying the nature of prions may resolve long-standing debates in infectious disease research.
    • Identifying genetic factors influencing susceptibility can aid in risk assessment and personalized medicine.