Effect of Sinc genotype, agent isolate and route of infection on the accumulation of protease-resistant PrP in non-central nervous system tissues during the development of murine scrapie.

Abstract

Mice congenic for the Sinc gene were infected intracerebrally with two scrapie strains, ME7 and 22A. At various times during the incubation period tissues were monitored for the infection-specific form of PrP (PrPSc). PrPSc was found in brain, spleen, lymph nodes, pancreas, submaxillary gland and thymus. After intraperitoneal inoculation PrPSc was found in spleen, lymph nodes, pancreas and submaxillary glands prior to its detection in brain. The kinetics of accumulation of PrPSc in these tissues was dependent on the infecting strain of agent, on the mouse Sinc genotype and on the route of infection. This study supports using the presence of PrPSc as an indicator of infectivity in brain and extraneural tissues and defines some of the parameters which influence when and where PrPSc is first found.

• Authors: C F Farquhar, J Dornan, R A Somerville, A M Tunstall, J Hope
• Journal: The Journal of general virology (J Gen Virol) Vol. 75 ( Pt 3) Pg. 495-504 (Mar 1994) ISSN: 0022-1317 [Print] England
• PMID: 7907357 (Publication Type: Journal Article)

Chemical References

• PrPSc Proteins
• Prions
• Serine Endopeptidases
• Endopeptidase K

Topics

• Animals
• Brain (microbiology)
• Disease Models, Animal
• Endopeptidase K
• Genotype
• Kinetics
• Lymphoid Tissue (microbiology)
• Mice
• Mice, Inbred Strains
• Pancreas (microbiology)
• PrPSc Proteins
• Prions (drug effects, genetics, isolation & purification, metabolism)
• Scrapie (microbiology)
• Serine Endopeptidases