Scrapie infectivity is quickly cleared in tissues of orally-infected farmed fish
Background Scrapie and bovine spongiform encephalopathy (BSE) belongs to the group of animal transmissible spongiform encephalopathy (TSE). BSE epidemic in the UK and elsewhere in Europe has been linked to the use of bovine meat and bone meals (MBM) in the feeding of cattle. There is concern that pi...
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Online Access: | http://hdl.handle.net/2434/38326 https://doi.org/10.1186/1746-6148-2-21 |
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ftunivmilanoair:oai:air.unimi.it:2434/38326 2024-02-11T10:08:28+01:00 Scrapie infectivity is quickly cleared in tissues of orally-infected farmed fish L. Ingrosso B. Novoa F. Cardone R. Aranguren M. Sbriccoli S. Bevivino Q. Liu V. Vetrugno M. Lu A. Figueras M. Pocchiari A. Dalla Valle Zenone M. Iriti F. Faoro S. Ciappellano L. Ingrosso B. Novoa A. Dalla Valle Zenone F. Cardone R. Aranguren M. Sbriccoli S. Bevivino M. Iriti Q. Liu V. Vetrugno M. Lu F. Faoro S. Ciappellano A. Figuera M. Pocchiari 2006-06-15 http://hdl.handle.net/2434/38326 https://doi.org/10.1186/1746-6148-2-21 eng eng BioMed Central info:eu-repo/semantics/altIdentifier/pmid/16776828 volume:2 issue:21 journal:BMC VETERINARY RESEARCH http://hdl.handle.net/2434/38326 doi:10.1186/1746-6148-2-21 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-33746417913 info:eu-repo/semantics/openAccess Scrapie Infectivity Fish Settore BIO/09 - Fisiologia Settore AGR/12 - Patologia Vegetale info:eu-repo/semantics/article 2006 ftunivmilanoair https://doi.org/10.1186/1746-6148-2-21 2024-01-23T23:18:18Z Background Scrapie and bovine spongiform encephalopathy (BSE) belongs to the group of animal transmissible spongiform encephalopathy (TSE). BSE epidemic in the UK and elsewhere in Europe has been linked to the use of bovine meat and bone meals (MBM) in the feeding of cattle. There is concern that pigs, poultry and fish bred for human consumption and fed with infected MBM would eventually develop BSE or carry residual infectivity without disease. Although there has been no evidence of infection in these species, experimental data on the susceptibility to the BSE agent of farm animals other than sheep and cow are limited only to pigs and domestic chicken. In the framework of a EU-granted project we have challenged two species of fish largely used in human food consumption, rainbow trout (Oncorhynchus mykiss) and turbot (Scophthalmus maximus), with a mouse-adapted TSE strain (scrapie 139A), to assess the risk related to oral consumption of TSE contaminated food. In trout, we also checked the "in vitro" ability of the pathological isoform of the mouse prion protein (PrPSc) to cross the intestinal epithelium when added to the mucosal side of everted intestine. Results Fish challenged with a large amount of scrapie mouse brain homogenate by either oral or parenteral routes, showed the ability to clear the majority of infectivity load. None of the fish tissues taken at different time points after oral or parenteral inoculation was able to provoke scrapie disease after intracerebral inoculation in recipient mice. However, a few recipient mice were positive for PrPSc and spongiform lesions in the brain. We also showed a specific binding of PrPSc to the mucosal side of fish intestine in the absence of an active uptake of the prion protein through the intestinal wall. Conclusion These results indicate that scrapie 139A, and possibly BSE, is quickly removed from fish tissues despite evidence of a prion like protein in fish and of a specific binding of PrPSc to the mucosal side of fish intestine. Article in Journal/Newspaper Scophthalmus maximus Turbot The University of Milan: Archivio Istituzionale della Ricerca (AIR) BMC Veterinary Research 2 1 21 |
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The University of Milan: Archivio Istituzionale della Ricerca (AIR) |
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ftunivmilanoair |
language |
English |
topic |
Scrapie Infectivity Fish Settore BIO/09 - Fisiologia Settore AGR/12 - Patologia Vegetale |
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Scrapie Infectivity Fish Settore BIO/09 - Fisiologia Settore AGR/12 - Patologia Vegetale L. Ingrosso B. Novoa F. Cardone R. Aranguren M. Sbriccoli S. Bevivino Q. Liu V. Vetrugno M. Lu A. Figueras M. Pocchiari A. Dalla Valle Zenone M. Iriti F. Faoro S. Ciappellano Scrapie infectivity is quickly cleared in tissues of orally-infected farmed fish |
topic_facet |
Scrapie Infectivity Fish Settore BIO/09 - Fisiologia Settore AGR/12 - Patologia Vegetale |
description |
Background Scrapie and bovine spongiform encephalopathy (BSE) belongs to the group of animal transmissible spongiform encephalopathy (TSE). BSE epidemic in the UK and elsewhere in Europe has been linked to the use of bovine meat and bone meals (MBM) in the feeding of cattle. There is concern that pigs, poultry and fish bred for human consumption and fed with infected MBM would eventually develop BSE or carry residual infectivity without disease. Although there has been no evidence of infection in these species, experimental data on the susceptibility to the BSE agent of farm animals other than sheep and cow are limited only to pigs and domestic chicken. In the framework of a EU-granted project we have challenged two species of fish largely used in human food consumption, rainbow trout (Oncorhynchus mykiss) and turbot (Scophthalmus maximus), with a mouse-adapted TSE strain (scrapie 139A), to assess the risk related to oral consumption of TSE contaminated food. In trout, we also checked the "in vitro" ability of the pathological isoform of the mouse prion protein (PrPSc) to cross the intestinal epithelium when added to the mucosal side of everted intestine. Results Fish challenged with a large amount of scrapie mouse brain homogenate by either oral or parenteral routes, showed the ability to clear the majority of infectivity load. None of the fish tissues taken at different time points after oral or parenteral inoculation was able to provoke scrapie disease after intracerebral inoculation in recipient mice. However, a few recipient mice were positive for PrPSc and spongiform lesions in the brain. We also showed a specific binding of PrPSc to the mucosal side of fish intestine in the absence of an active uptake of the prion protein through the intestinal wall. Conclusion These results indicate that scrapie 139A, and possibly BSE, is quickly removed from fish tissues despite evidence of a prion like protein in fish and of a specific binding of PrPSc to the mucosal side of fish intestine. |
author2 |
L. Ingrosso B. Novoa A. Dalla Valle Zenone F. Cardone R. Aranguren M. Sbriccoli S. Bevivino M. Iriti Q. Liu V. Vetrugno M. Lu F. Faoro S. Ciappellano A. Figuera M. Pocchiari |
format |
Article in Journal/Newspaper |
author |
L. Ingrosso B. Novoa F. Cardone R. Aranguren M. Sbriccoli S. Bevivino Q. Liu V. Vetrugno M. Lu A. Figueras M. Pocchiari A. Dalla Valle Zenone M. Iriti F. Faoro S. Ciappellano |
author_facet |
L. Ingrosso B. Novoa F. Cardone R. Aranguren M. Sbriccoli S. Bevivino Q. Liu V. Vetrugno M. Lu A. Figueras M. Pocchiari A. Dalla Valle Zenone M. Iriti F. Faoro S. Ciappellano |
author_sort |
L. Ingrosso |
title |
Scrapie infectivity is quickly cleared in tissues of orally-infected farmed fish |
title_short |
Scrapie infectivity is quickly cleared in tissues of orally-infected farmed fish |
title_full |
Scrapie infectivity is quickly cleared in tissues of orally-infected farmed fish |
title_fullStr |
Scrapie infectivity is quickly cleared in tissues of orally-infected farmed fish |
title_full_unstemmed |
Scrapie infectivity is quickly cleared in tissues of orally-infected farmed fish |
title_sort |
scrapie infectivity is quickly cleared in tissues of orally-infected farmed fish |
publisher |
BioMed Central |
publishDate |
2006 |
url |
http://hdl.handle.net/2434/38326 https://doi.org/10.1186/1746-6148-2-21 |
genre |
Scophthalmus maximus Turbot |
genre_facet |
Scophthalmus maximus Turbot |
op_relation |
info:eu-repo/semantics/altIdentifier/pmid/16776828 volume:2 issue:21 journal:BMC VETERINARY RESEARCH http://hdl.handle.net/2434/38326 doi:10.1186/1746-6148-2-21 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-33746417913 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1186/1746-6148-2-21 |
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BMC Veterinary Research |
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