Subject: Species-barrier-independent prion replication in apparently resistant species

Species-barrier-independent prion replication in apparently resistant species

Pertenece a: UCL University College London Eprints

Descripción: Transmission of prions between mammalian species is thought to be limited by a “species barrier,” which depends on differences in the primary structure of prion proteins in the infecting inoculum and the host, Here we demonstrate that a strain of hamster prions thought to be nonpathogenic for conventional mice leads to prion replication to high levels in such mice but without causing clinical disease. Prions pathogenic in both mice and hamsters are produced. These results demonstrate the existence of subclinical forms of prion infection with important public health implications, both with respect to iatrogenic transmission from apparently healthy humans and dietary exposure to cattle and other species exposed to bovine spongiform encephalopathy prions, Current definitions of the species barrier, which have been based on clinical endpoints, need to be fundamentally reassessed.

Autor(es): Hill, AF – Joiner, S – Linehan, J – Desbruslais, M – Lantos, PL – Collinge, J -

Fecha de contribución: 10-dic-2010

Contacto:

http://biblioteca.universia.net/html_bura/ficha/params/id/52395313.html

for those interested, see more here with comments……..

Saturday, December 11, 2010

Species-barrier-independent prion replication in apparently resistant species

http://transmissiblespongiformencephalopathy.blogspot.com/2010/12/species-barrier-independent-prion.html

Thursday, November 18, 2010

UNITED STATES OF AMERICA VS GALEN J. NIEHUES FAKED MAD COW FEED TEST ON 92 BSE INSPECTION REPORTS FOR APPROXIMATELY 100 CATTLE OPERATIONS

http://bse-atypical.blogspot.com/2010/11/united-states-of-america-vs-galen-j.html

Tuesday, November 02, 2010

BSE – ATYPICAL LESION DISTRIBUTION (RBSE 92-21367) statutory (obex only) diagnostic criteria CVL 1992

http://bse-atypical.blogspot.com/2010/11/bse-atypical-lesion-distribution-rbse.html

Monday, November 22, 2010

Atypical transmissible spongiform encephalopathies in ruminants: a challenge for disease surveillance and control

REVIEW ARTICLES

http://transmissiblespongiformencephalopathy.blogspot.com/2010/11/atypical-transmissible-spongiform.html

Thursday, November 18, 2010

Increased susceptibility of human-PrP transgenic mice to bovine spongiform encephalopathy following passage in sheep

http://bse-atypical.blogspot.com/2010/11/increased-susceptibility-of-human-prp.html

Seven main threats for the future linked to prions

The NeuroPrion network has identified seven main threats for the future linked to prions.

First threat

The TSE road map defining the evolution of European policy for protection against prion diseases is based on a certain numbers of hypotheses some of which may turn out to be erroneous. In particular, a form of BSE (called atypical Bovine Spongiform Encephalopathy), recently identified by systematic testing in aged cattle without clinical signs, may be the origin of classical BSE and thus potentially constitute a reservoir, which may be impossible to eradicate if a sporadic origin is confirmed.

*** Also, a link is suspected between atypical BSE and some apparently sporadic cases of Creutzfeldt-Jakob disease in humans. These atypical BSE cases constitute an unforeseen first threat that could sharply modify the European approach to prion diseases.

http://www.neuroprion.org/en/np-neuroprion.html

Thursday, August 12, 2010

Seven main threats for the future linked to prions

http://prionpathy.blogspot.com/2010/08/seven-main-threats-for-future-linked-to.html

http://prionpathy.blogspot.com/

AS implied in the Inset 25 we must not _ASSUME_ that transmission of BSE to other species will invariably present pathology typical of a scrapie-like disease.

snip…

http://collections.europarchive.org/tna/20080102185948/http://www.bseinquiry.gov.uk/files/yb/1991/01/04004001.pdf

Sunday, November 28, 2010

Variably protease-sensitive prionopathy in a PRNP codon 129 heterozygous UK patient with co-existing tau, a synuclein and AB pathology

http://prionopathy.blogspot.com/2010/11/variably-protease-sensitive-prionopathy.html

UPDATED DATA ON 2ND CWD STRAIN

Wednesday, September 08, 2010

CWD PRION CONGRESS SEPTEMBER 8-11 2010

http://chronic-wasting-disease.blogspot.com/2010/09/cwd-prion-2010.html

PRION 2010 Meeting Report International Prion Congress: From agent to disease; September 8–11, 2010; Salzburg, Austria Volume 4, Issue 3 July/August/September 2010

http://www.landesbioscience.com/journals/prion/article/12764/

UPDATED DATA ON 2ND CWD STRAIN

Wednesday, September 08, 2010

CWD PRION CONGRESS SEPTEMBER 8-11 2010

http://chronic-wasting-disease.blogspot.com/2010/09/cwd-prion-2010.html

http://chronic-wasting-disease.blogspot.com/

what about that sheep scrapie, and how the feds so freely said that sheep scrapie has and would never transmit to humans……well, think again. …terry

Thursday, November 18, 2010

Increased susceptibility of human-PrP transgenic mice to bovine spongiform encephalopathy following passage in sheep

http://bse-atypical.blogspot.com/2010/11/increased-susceptibility-of-human-prp.html

Sunday, December 12, 2010

EFSA reviews BSE/TSE infectivity in small ruminant tissues News Story 2 December 2010

http://transmissiblespongiformencephalopathy.blogspot.com/2010/12/efsa-reviews-bsetse-infectivity-in.html

Tuesday, December 14, 2010

Infection control of CJD, vCJD and other human prion diseases in healthcare and community settings part 4, Annex A1, Annex J, UPDATE DECEMBER 2010

http://creutzfeldt-jakob-disease.blogspot.com/2010/12/infection-control-of-cjd-vcjd-and-other.html

IN CONFIDENCE

IS THERE A SCRAPIE-LIKE DISEASE IN CATTLE ?

http://collections.europarchive.org/tna/20080102233201/http://www.bseinquiry.gov.uk/files/yb/1987/06/10004001.pdf

http://web.archive.org/web/20030516051623/http://www.bseinquiry.gov.uk/files/mb/m09/tab05.pdf

IN CONFIDENCE

PERCEPTIONS OF A SLOW VIRUS DISEASE IN ANIMALS IN THE USA

http://collections.europarchive.org/tna/20081106012811/http://www.bseinquiry.gov.uk/files/mb/m11b/tab01.pdf

2010

Rural and Regional Affairs and Transport References Committee The possible impacts and consequences for public health, trade and agriculture of the Government’s decision to relax import restrictions on beef Final report June 2010

2.65 At its hearing on 14 May 2010, the committee heard evidence from Dr Alan Fahey who has recently submitted a thesis on the clinical neuropsychiatric, epidemiological and diagnostic features of Creutzfeldt-Jakob disease.48 Dr Fahey told the committee of his concerns regarding the lengthy incubation period for transmissible spongiform encephalopathies, the inadequacy of current tests and the limited nature of our current understanding of this group of diseases.49

2.66 Dr Fahey also told the committee that in the last two years a link has been established between forms of atypical CJD and atypical BSE. Dr Fahey said that: They now believe that those atypical BSEs overseas are in fact causing sporadic Creutzfeldt-Jakob disease. They were not sure if it was due to mad sheep disease or a different form. If you look in the textbooks it looks like this is just arising by itself. But in my research I have a summary of a document which states that there has never been any proof that sporadic Creutzfeldt-Jakob disease has arisen de novo—has arisen of itself. There is no proof of that. The recent research is that in fact it is due to atypical forms of mad cow disease which have been found across Europe, have been found in America and have been found in Asia. These atypical forms of mad cow disease typically have even longer incubation periods than the classical mad cow disease.50

http://www.aph.gov.au/senate/committee/rrat_ctte/mad_cows/report/report.pdf

Sunday, September 6, 2009

MAD COW USA 1997 SECRET VIDEO

http://madcowusda.blogspot.com/2009/09/mad-cow-usa-1997-video.html

U.S.A. HIDING MAD COW DISEASE VICTIMS AS SPORADIC CJD ? see video at bottom

http://creutzfeldt-jakob-disease.blogspot.com/2009/07/usa-hiding-mad-cow-disease-victims-as.html

Tuesday, December 14, 2010 TAFS1

Position Paper on Relaxation of the Feed Ban in the EU SUMMARY © TAFS, Berne, 2010

http://transmissiblespongiformencephalopathy.blogspot.com/2010/12/tafs1-position-paper-on-relaxation-of.html

TSS

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I’m not sure I understand the question…

I’m not sure I understand the question…