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Procedures for Identifying Infectious Prions After Passage Through the Digestive System of an Avian Species
Published on: November 6, 2013
[Transmission of spongiform encephalopathies (prion diseases)]
1Klinik und Poliklinik für Hals-Nasen-Ohren-Heilkunde, Universitätsklinken des Saarlandes, Kirrberger Strasse, 66421 Homburg/Saar. P.Federspil@uniklinik-saarland.de
Abstract:
The transmissible spongiform encephalopathies (TSE), or prion diseases, constitute a form of degenerative disorders of the central nervous system, which are characterized by a typical spongiform histological pattern and a fatal course. According to Prusiner's theory, its agent consists of a protein without any nucleic acid, the "proteinaceous infectious agent", or prion. This is a pathologically folded form of the normal prion protein (PrPC), and then called PrPSc. TSE are observed in different mammals including humans. In humans, they include Creutzfeldt-Jakob disease (CJD), Gerstmann-Sträussler-Scheinker syndrome (GSS), fatal familial insomnia (FFI), Kuru and the new variant of the Creutzfeldt-Jakob disease (vCJD). The longest known TSE is scrapie in sheep. Since 1984 the bovine spongiform encephalopathy (BSE) and since 1996 the variant Creutzfeldt-Jakob disease have been documented. This paper gives an overview on the pathogenesis, epidemiology and the clinical features of the different prion diseases.
Insights
Transmissible spongiform encephalopathies (TSEs), or prion diseases, are fatal neurodegenerative disorders caused by misfolded prion proteins. This overview details their pathogenesis, epidemiology, and clinical features across various mammals.
Area of Science:
- Neurology
- Infectious Diseases
- Molecular Biology
Context:
- Transmissible spongiform encephalopathies (TSEs), known as prion diseases, are fatal neurodegenerative conditions affecting the central nervous system.
- These diseases are characterized by a distinctive spongiform histological pattern.
Purpose:
- To provide a comprehensive overview of prion diseases.
- To discuss the pathogenesis, epidemiology, and clinical manifestations of various TSEs.
Summary:
- Prion diseases are caused by infectious agents, termed prions, which are pathologically folded forms of the normal prion protein (PrPC), designated PrPSc.
- TSEs affect numerous mammals, including humans, with examples such as Creutzfeldt-Jakob disease (CJD), Gerstmann-Sträussler-Scheinker syndrome (GSS), fatal familial insomnia (FFI), Kuru, and variant CJD (vCJD).
- Notable animal TSEs include scrapie in sheep and bovine spongiform encephalopathy (BSE) in cattle.
Impact:
- Enhances understanding of prion disease mechanisms and transmission.
- Provides a foundational resource for researchers and clinicians studying neurodegenerative disorders.
- Contributes to the knowledge base for managing and potentially treating prion-related illnesses.
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