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DOI: 10.1055/s-2002-19641
Intestinal Entry of Prions
Prioneneintritt über den DünndarmPublication History
4.10.2001
4.10.2001
Publication Date:
21 January 2002 (online)

Abstract
Variant Creutzfeldt-Jakob disease is thought to be caused by infected prion protein via ingestion of contaminated beef. After ingestion of infected prion proteins, uptake by small intestine may be by either M-cell dependent or M-cell independent routes. A receptor for prion protein, laminin receptor precursor is expressed on the brush border of small intestinal epithelium in 40 % of subjects. The cellular prion protein expressed on the enteric nervous system might serve as the target for conversion to infectious prion protein and a route for spread to the central nervous system.
Zusammenfassung
Eine Variante der Creutzfeldt-Jakob-Krankheit soll über die Aufnahme kontaminierten Rindfleischs durch infektiöses Prionenprotein hervorgerufen werden. Nach dem Verzehr können die Prionenproteine im Dünndarm durch Vermittlung der M-Zellen oder unabhängig davon aufgenommen werden. Bei 40 % aller Menschen wird am Bürstensaum des Dünndarmepithels ein Rezeptor für Prionenproteine, der Lamininrezeptor, exprimiert. Das im enterischen Nervensystem exprimierte zelluläre Prionenprotein könnte als Ziel für die Umwandlung in infektiöses Protein dienen und den Weg zur Ausbreitung ins Zentralnervensystem darstellen.
Key words
Prions - Variant CJD - Laminin Receptor Protein - Small Intestine
Schlüsselwörter
Prionen - CJD-Variante - Laminin-Rezeptorprotein - Dünndarm
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Prof. S. Ghosh
Gastroenterology Section, Imperial College School of
Medicine
Hammersmith Campus
London W12 0NN
Email: s.ghosh@ic.ac.uk
