Confirmation d’un
cas d’encéphalopathie spongiforme bovine (ESB) chez une vache dans les
Ardennes
© Xavier Remongin / Min.Agri.Fr
24/03/2016
Communiqué
La suspicion de cas d’encéphalopathie
spongiforme bovine (ESB) détecté chez une vache de 5 ans décédée prématurément
dans un élevage des Ardennes a été confirmée le 23 mars par le laboratoire de
référence de l’Union européenne (LRUE).
Ce cas isolé a été notifié ce jour à la Commission européenne et à l’Organisation mondiale de la santé animale (OIE). Il s’agit du troisième cas isolé d’ESB de ce type détecté en Europe depuis 2015.
Conformément à la réglementation européenne, la principale conséquence de ce cas isolé se traduira par une adaptation technique du traitement de certaines parties d’animaux non destinées à la consommation (matériels à risque spécifiés (MRS). La détection de ce cas n’a aucune conséquence pour le consommateur.
Le Directeur général de l’alimentation réunira vendredi 25 mars matin les membres du Conseil national d'orientation de la politique sanitaire animale et végétale (CNOPSAV) afin de présenter les mesures de gestion à mettre en oeuvre.
La détection de ce cas isolé atteste de l’efficacité de notre système de surveillance mis en place en France tout au long de la chaîne alimentaire.
Stéphane LE FOLL va solliciter la Commission européenne afin qu’elle saisisse l’Autorité européenne de sécurité des aliments (EFSA) en lien avec l’Agence nationale de sécurité sanitaire (Anses) pour mieux comprendre l’origine et la cause de ces cas isolés chez des bovins jeunes.
Stéphane Le Foll rappelle que la consommation de viande bovine ne présente aucun risque pour l’homme.
Pour en savoir plus : agriculture.gouv.fr
Confirmation d’un cas d’encéphalopathie spongiforme bovine (ESB) chez une vache dans les Ardennes (PDF, 75.88 Ko)
Contacts presse :
Service de presse de Stéphane LE FOLL - Tel : 01 49 55 59 74 ; Fax: 01 49 55 43 81cab-presse.agriculture@agriculture.gouv.fr
Service de presse du ministère - Tel : 01 49 55 60 11ministere.presse@agriculture.gouv.fr
http://agriculture.gouv.fr/confirmation-dun-cas-dencephalopathie-spongiforme-bovine-esb-chez-une-vache-dans-les-Ardennes
see OIE report...typical classical BSE
http://www.oie.int/wahis_2/public/wahid.php/Reviewreport/Review?page_refer=MapFullEventReport&reportid=19974
Ce cas isolé a été notifié ce jour à la Commission européenne et à l’Organisation mondiale de la santé animale (OIE). Il s’agit du troisième cas isolé d’ESB de ce type détecté en Europe depuis 2015.
Conformément à la réglementation européenne, la principale conséquence de ce cas isolé se traduira par une adaptation technique du traitement de certaines parties d’animaux non destinées à la consommation (matériels à risque spécifiés (MRS). La détection de ce cas n’a aucune conséquence pour le consommateur.
Le Directeur général de l’alimentation réunira vendredi 25 mars matin les membres du Conseil national d'orientation de la politique sanitaire animale et végétale (CNOPSAV) afin de présenter les mesures de gestion à mettre en oeuvre.
La détection de ce cas isolé atteste de l’efficacité de notre système de surveillance mis en place en France tout au long de la chaîne alimentaire.
Stéphane LE FOLL va solliciter la Commission européenne afin qu’elle saisisse l’Autorité européenne de sécurité des aliments (EFSA) en lien avec l’Agence nationale de sécurité sanitaire (Anses) pour mieux comprendre l’origine et la cause de ces cas isolés chez des bovins jeunes.
Stéphane Le Foll rappelle que la consommation de viande bovine ne présente aucun risque pour l’homme.
Pour en savoir plus : agriculture.gouv.fr
Confirmation d’un cas d’encéphalopathie spongiforme bovine (ESB) chez une vache dans les Ardennes (PDF, 75.88 Ko)
Contacts presse :
Service de presse de Stéphane LE FOLL - Tel : 01 49 55 59 74 ; Fax: 01 49 55 43 81cab-presse.agriculture@agriculture.gouv.fr
Service de presse du ministère - Tel : 01 49 55 60 11ministere.presse@agriculture.gouv.fr
http://agriculture.gouv.fr/confirmation-dun-cas-dencephalopathie-spongiforme-bovine-esb-chez-une-vache-dans-les-Ardennes
see OIE report...typical classical BSE
http://www.oie.int/wahis_2/public/wahid.php/Reviewreport/Review?page_refer=MapFullEventReport&reportid=19974
From: Terry S. Singeltary Sr.
Sent: Wednesday, March 23, 2016 8:48 AM
Cc: agrahelp@informa.com ; CJD-L@LISTS.AEGEE.ORG ; cjdvoice@yahoogroups.com ; bloodcjd@yahoogroups.com
Subject: FRANCE Suspected BSE case adds to woes for French beef
sector
Suspected BSE case adds to woes for French beef sector
By Max Green
Published: 23 March 2016 11:16 AM
A suspected case of bovine spongiform encephalopathy (BSE) has been
detected in France, potentially dealing another blow to meat exporters following
a series of other animal disease outbreaks.
The French agriculture ministry said samples from a cow in the
Ardennesregion had already been tested by the national reference laboratory
(ANSES) andwould now be sent to the EU’s reference laboratory. The results
should be available within eight to ten ...
FRANCE Farmers fear new ‘mad cow’ scare
March 23, 2016
POSSIBLE mad cow disease has been found on a farm in Ardennes and farmers
fear beef sales will be hard hit if the disease is confirmed. If confirmed, it
would be the first case of Bovine spongiform encephalitis in France since 2004.
The transmissible neurodegenerative disease kills cattle and has been linked to
the incurable variant Creutzfeldt-Jakob disease in humans, which destroys brain
tissue.
There were more than 185,000 confirmed cases of BSE in Europe and
especially the UK in the 1980s and 90s and more than four million cattle were
killed and burned. It was thought to have been caused by animal feed that
contained the remains of infected animals. The UK has had 177 confirmed cases of
the human vCJD since the mid-1980s.
Vets at a rendering plant discovered traces of what they suspected was BSE
in a Salers cow sent to the knackers yard after dying on a farm near Rethel in
Ardennes in north-eastern France. Animals which die on farms are deemed unfit
for consumption and sent to the knackers for inspection to find the cause of
death. Now samples have been sent to the official European BSE reference
laboratory in the UK for confirmation of the disease and the farmer’s 400 other
animals have been quarantined.
Confirmation will take up to 10 days and all animals in contact with the
cow will be slaughtered, along with those from the same birth line as
inheritance is the only known method of transmission. Staff from the Direction
Générale de l'Alimentation are already tracing these animals but made it clear
that not all animals on linked farms would be killed. Farmers across the
industry have been hard hit by falling incomes and have launched widescale
protests demanding action.
This new threat, coming just months after France won back its "negligible
risk" rating for BSE could put the beef sector in great difficulty if it returns
to the “controlled risk” status. Countries such as South Africa, Saudi Arabia,
Vietnam and Singapore lifted their embargo on French beef after it became
negligible risk. The possible effects of more BSE cases were shown in the UK,
where domestic beef sales fell 40% in the 1990s and sales were banned across the
EU, led by France.
Salers cattle photo: Fabien1309 CC BY-SA 3.0 -
***atypical spontaneous BSE in France LOL***
FRANCE STOPS TESTING FOR MAD COW DISEASE BSE, and here’s why, to many
spontaneous events of mad cow disease $$$
***so 20 cases of atypical BSE in France, compared to the remaining 40
cases in the remaining 12 Countries, divided by the remaining 12 Countries,
about 3+ cases per country, besides Frances 20 cases. you cannot explain this
away with any spontaneous BSe. ...TSS
Sunday, October 5, 2014
France stops BSE testing for Mad Cow Disease
Wednesday, July 15, 2015
Additional BSE TSE prion testing detects pathologic lesion in unusual brain
location and PrPsc by PMCA only, how many cases have we missed?
***however in 1 C-type challenged animal, Prion 2015 Poster Abstracts S67
PrPsc was not detected using rapid tests for BSE.
***Subsequent testing resulted in the detection of pathologic lesion in
unusual brain location and PrPsc detection by PMCA only.
*** IBNC Tauopathy or TSE Prion disease, it appears, no one is sure
***
Posted by Terry S. Singeltary Sr. on 03 Jul 2015 at 16:53 GMT
*** Singeltary reply ; Molecular, Biochemical and Genetic Characteristics
of BSE in Canada Singeltary reply ;
*** It also suggests a similar cause or source for atypical BSE in these
countries. ***
Discussion: The C, L and H type BSE cases in Canada exhibit molecular
characteristics similar to those described for classical and atypical BSE cases
from Europe and Japan.
*** This supports the theory that the importation of BSE contaminated
feedstuff is the source of C-type BSE in Canada.
*** It also suggests a similar cause or source for atypical BSE in these
countries. ***
see page 176 of 201 pages...tss
Evidence That Transmissible Mink Encephalopathy Results from Feeding
Infected Cattle
Over the next 8-10 weeks, approximately 40% of all the adult mink on the
farm died from TME.
snip...
The rancher was a ''dead stock'' feeder using mostly (>95%) downer or
dead dairy cattle...
To further complicate things, we now know that science has shown that
plants and vegetables can uptake the TSE Prion, and that the Scrapie agent can
still be infectious from soil 16 years later. a frightening thought with the CWD
running rampant now in North America (please see source reference materials
below).
IF we don’t not do this, we have failed, and the TSE Prion agent will
continue to spread, as it is doing as we speak.
I strenuously once again urge the FDA and its industry constituents, to
make it MANDATORY that all ruminant feed be banned to all ruminants, and this
should include all cervids, as well as non-ruminants such as cats and dogs as
well, as soon as possible for the following reasons...
31 Jan 2015 at 20:14 GMT
*** Ruminant feed ban for cervids in the United States? ***
31 Jan 2015 at 20:14 GMT
see Singeltary comment ;
URGENT UPDATE !
Sunday, March 20, 2016
Docket No. FDA-2003-D-0432 (formerly 03D-0186) Use of Material from Deer
and Elk in Animal Feed Singeltary Submission
USDA FSIS APHIS FDA CDC NIH MAD COW TRIPLE FIREWALL ???
LMAO!
nothing but ink on paper. don’t believe me, see for yourself ; Friday,
March 18, 2016
CFSAN Constituent Update: FDA Announces Final Rule on Bovine Spongiform
Encephalopathy BSE MAD COW TSE PRION
Center for Food Safety and Applied Nutrition - Constituent Update
Wednesday, March 2, 2016
RANCHO He did not know that they were placing healthy cow heads next to
suspect carcasses BSE TSE Prion
Monday, January 4, 2016
Long live the OIE, or time to close the doors on a failed entity?
Thursday, October 22, 2015
Former Ag Secretary Ann Veneman talks women in agriculture and we talk mad
cow disease USDA and what really happened
Saturday, February 6, 2016
Secretary's Advisory Committee on Animal Health; Meeting [Docket No.
APHIS-2016-0007] Singeltary Submission
Tuesday, January 26, 2016
USDA National Program 103 ANIMAL HEALTH TSE PRION ACCOMPLISHMENT REPORT
2011-2015 March 2015
Thursday, January 14, 2016
EMERGING ANIMAL DISEASES Actions Needed to Better Position USDA to Address
Future Risks Report to the Chairman, Committee on Energy and Commerce, House of
Representatives December 2015 GAO-16-132
GAO
Tuesday, March 15, 2016
Docket No. FDA-2016-N-0321 Risk Assessment of Foodborne Illness Associated
with Pathogens from Produce Grown in Fields Amended with Untreated Biological
Soil Amendments of Animal Origin; Request for Comments, Scientific Data, and
Information Singeltary Submission
*** Docket No. APHIS-2007-0127 Scrapie in Sheep and Goats Terry Singeltary
Sr. Submission ***
Monday, November 16, 2015
*** Docket No. APHIS-2007-0127 Scrapie in Sheep and Goats Terry Singeltary
Sr. Submission ***
Draft Guidance for Industry on Ensuring Safety of Animal Feed Maintained
and Fed On-Farm; Availability
# 203 entitled “Ensuring Safety of Animal Feed Maintained and Fed
On-Farm.”
Terry S. Singeltary Sr. submission ;
Docket No. APHIS-2014-0107 Bovine Spongiform Encephalopathy; Importation of
Animals and Animal Products Singeltary Submission
Posted: 12/30/2014ID: APHIS-2014-0107-0001
Notice: Environmental Impact Statements; Availability, etc.: Animal Carcass
Management
Document ID: APHIS-2013-0044-0001 Docket ID: APHIS-2013-0044 Comment ID:
APHIS-2013-0044-0002
(APHIS) Notice: Agency Information Collection Activities; Proposals,
Submissions, and Approvals: Chronic Wasting Disease Herd Certification Program
Agency Information Collection Activities; Proposals, Submissions, and Approvals:
Chronic Wasting Disease Herd Certification Program (Document ID
APHIS-2011-0032-0001)
Owens, Julie
From: Terry S. Singeltary Sr. [flounder9@verizon.net]
Sent: Monday, July 24, 2006 1:09 PM
To: FSIS RegulationsComments
Subject: [Docket No. FSIS-2006-0011] FSIS Harvard Risk Assessment of Bovine
Spongiform Encephalopathy (BSE) Page 1 of 98
FSIS, USDA, REPLY TO SINGELTARY
From:Terry S. Singeltary Sr. [flounder9@verizon.net]
Sent:Thursday, September 08, 2005 6:17 PM
To:fsis.regulationscomments@fsis.usda.gov
Subject: [Docket No. 03-025IFA] FSIS Prohibition of the Use of Specified
Risk Materials for Human Food and Requirements for the Disposition of
Non-Ambulatory Disabled Cattle
APHIS-2006-0118-0096 CWD
DOCKET-- 03D-0186 -- FDA Issues Draft Guidance on Use of Material From Deer
and Elk in Animal Feed; Availability Date: Fri, 16 May 2003 11:47:37 0500 EMC 1
Terry S. Singeltary Sr. Vol #: 1
PLEASE SEE FULL TEXT SUBMISSION ;
2001 Terry S. Singeltary Sr. comment submission
Subject: USDA OIG SEMIANNUAL REPORT TO CONGRESS FY 2007 1st Half (bogus BSE
sampling FROM HEALTHY USDA CATTLE)
Date: June 21, 2007 at 2:49 pm PST
Owner and Corporation Plead Guilty to Defrauding Bovine Spongiform
Encephalopathy (BSE) Surveillance Program
An Arizona meat processing company and its owner pled guilty in February
2007 to charges of theft of Government funds, mail fraud, and wire fraud. The
owner and his company defrauded the BSE Surveillance Program when they falsified
BSE Surveillance Data Collection Forms and then submitted payment requests to
USDA for the services.
In addition to the targeted sample population (those cattle that were more
than 30 months old or had other risk factors for BSE),
*** the owner submitted to USDA, or caused to be submitted, BSE obex (brain
stem) samples from healthy USDA-inspected cattle.
As a result, the owner fraudulently received approximately $390,000.
Sentencing is scheduled for May 2007.
snip...
Topics that will be covered in ongoing or planned reviews under Goal 1
include:
soundness of BSE maintenance sampling (APHIS),
implementation of Performance-Based Inspection System enhancements for
specified risk material (SRM) violations and improved inspection controls over
SRMs (FSIS and APHIS),
snip...
The findings and recommendations from these efforts will be covered in
future semiannual reports as the relevant audits and investigations are
completed.
4 USDA OIG SEMIANNUAL REPORT TO CONGRESS FY 2007 1st Half
Wednesday, July 15, 2015
Additional BSE TSE prion testing detects pathologic lesion in unusual brain
location and PrPsc by PMCA only, how many cases have we missed?
*** Needless conflict ***
Nature 485, 279–280 (17 May 2012) doi:10.1038/485279b
Published online 16 May 2012
Terry S. Singeltary Sr. said:
I kindly wish to submit the following please ;
2015-2016
***********OCTOBER 2015*************
*** PRION 2015 ORAL AND POSTER CONGRESSIONAL ABSTRACTS ***
THANK YOU PRION 2015 TAYLOR & FRANCIS, Professor Chernoff, and
Professor Aguzzi et al, for making these PRION 2015 Congressional Poster and
Oral Abstracts available freely to the public. ...Terry S. Singeltary Sr.
O.05: Transmission of prions to primates after extended silent incubation
periods: Implications for BSE and scrapie risk assessment in human populations
Emmanuel Comoy, Jacqueline Mikol, Val erie Durand, Sophie Luccantoni,
Evelyne Correia, Nathalie Lescoutra, Capucine Dehen, and Jean-Philippe Deslys
Atomic Energy Commission; Fontenay-aux-Roses, France
Prion diseases (PD) are the unique neurodegenerative proteinopathies
reputed to be transmissible under field conditions since decades. The
transmission of Bovine Spongiform Encephalopathy (BSE) to humans evidenced that
an animal PD might be zoonotic under appropriate conditions. Contrarily, in the
absence of obvious (epidemiological or experimental) elements supporting a
transmission or genetic predispositions, PD, like the other proteinopathies, are
reputed to occur spontaneously (atpical animal prion strains, sporadic CJD
summing 80% of human prion cases). Non-human primate models provided the first
evidences supporting the transmissibiity of human prion strains and the zoonotic
potential of BSE. Among them, cynomolgus macaques brought major information for
BSE risk assessment for human health (Chen, 2014), according to their
phylogenetic proximity to humans and extended lifetime. We used this model to
assess the zoonotic potential of other animal PD from bovine, ovine and cervid
origins even after very long silent incubation periods. ***We recently observed
the direct transmission of a natural classical scrapie isolate to macaque after
a 10-year silent incubation period, with features similar to some reported for
human cases of sporadic CJD, albeit requiring fourfold longe incubation than
BSE. ***Scrapie, as recently evoked in humanized mice (Cassard, 2014), is the
third potentially zoonotic PD (with BSE and L-type BSE), ***thus questioning the
origin of human sporadic cases. We will present an updated panorama of our
different transmission studies and discuss the implications of such extended
incubation periods on risk assessment of animal PD for human health.
===============
***thus questioning the origin of human sporadic cases...
===============
***Our study demonstrates susceptibility of adult cattle to oral
transmission of classical BSE. ***
***our findings suggest that possible transmission risk of H-type BSE to
sheep and human. ***
P.86: Estimating the risk of transmission of BSE and scrapie to ruminants
and humans by protein misfolding cyclic amplification
Morikazu Imamura, Naoko Tabeta, Yoshifumi Iwamaru, and Yuichi Murayama
National Institute of Animal Health; Tsukuba, Japan
To assess the risk of the transmission of ruminant prions to ruminants and
humans at the molecular level, we investigated the ability of abnormal prion
protein (PrPSc) of typical and atypical BSEs (L-type and H-type) and typical
scrapie to convert normal prion protein (PrPC) from bovine, ovine, and human to
proteinase K-resistant PrPSc-like form (PrPres) using serial protein misfolding
cyclic amplification (PMCA).
Six rounds of serial PMCA was performed using 10% brain homogenates from
transgenic mice expressing bovine, ovine or human PrPC in combination with PrPSc
seed from typical and atypical BSE- or typical scrapie-infected brain
homogenates from native host species. In the conventional PMCA, the conversion
of PrPC to PrPres was observed only when the species of PrPC source and PrPSc
seed matched. However, in the PMCA with supplements (digitonin, synthetic polyA
and heparin), both bovine and ovine PrPC were converted by PrPSc from all tested
prion strains. On the other hand, human PrPC was converted by PrPSc from typical
and H-type BSE in this PMCA condition.
Although these results were not compatible with the previous reports
describing the lack of transmissibility of H-type BSE to ovine and human
transgenic mice, ***our findings suggest that possible transmission risk of
H-type BSE to sheep and human. Bioassay will be required to determine whether
the PMCA products are infectious to these animals.
================
==========================================
***our findings suggest that possible transmission risk of H-type BSE to
sheep and human. Bioassay will be required to determine whether the PMCA
products are infectious to these animals.
==========================================
Research Project: TRANSMISSION, DIFFERENTIATION, AND PATHOBIOLOGY OF
TRANSMISSIBLE SPONGIFORM ENCEPHALOPATHIES
Title: Transmission of scrapie prions to primate after an extended silent
incubation period
Authors
item Comoy, Emmanuel - item Mikol, Jacqueline - item Luccantoni-Freire,
Sophie - item Correia, Evelyne - item Lescoutra-Etchegaray, Nathalie - item
Durand, Valérie - item Dehen, Capucine - item Andreoletti, Olivier - item
Casalone, Cristina - item Richt, Juergen item Greenlee, Justin item Baron,
Thierry - item Benestad, Sylvie - item Hills, Bob - item Brown, Paul - item
Deslys, Jean-Philippe -
Submitted to: Scientific Reports Publication Type: Peer Reviewed Journal
Publication Acceptance Date: May 28, 2015 Publication Date: June 30, 2015
Citation: Comoy, E.E., Mikol, J., Luccantoni-Freire, S., Correia, E.,
Lescoutra-Etchegaray, N., Durand, V., Dehen, C., Andreoletti, O., Casalone, C.,
Richt, J.A., Greenlee, J.J., Baron, T., Benestad, S., Brown, P., Deslys, J.
2015. Transmission of scrapie prions to primate after an extended silent
incubation period. Scientific Reports. 5:11573.
Interpretive Summary:
The transmissible spongiform encephalopathies (also called prion diseases)
are fatal neurodegenerative diseases that affect animals and humans. The agent
of prion diseases is a misfolded form of the prion protein that is resistant to
breakdown by the host cells. Since all mammals express prion protein on the
surface of various cells such as neurons, all mammals are, in theory, capable of
replicating prion diseases. One example of a prion disease, bovine spongiform
encephalopathy (BSE; also called mad cow disease), has been shown to infect
cattle, sheep, exotic undulates, cats, non-human primates, and humans when the
new host is exposed to feeds or foods contaminated with the disease agent. The
purpose of this study was to test whether non-human primates (cynomologous
macaque) are susceptible to the agent of sheep scrapie. After an incubation
period of approximately 10 years a macaque developed progressive clinical signs
suggestive of neurologic disease. Upon postmortem examination and microscopic
examination of tissues, there was a widespread distribution of lesions
consistent with a transmissible spongiform encephalopathy. This information will
have a scientific impact since it is the first study that demonstrates the
transmission of scrapie to a non-human primate with a close genetic relationship
to humans. This information is especially useful to regulatory officials and
those involved with risk assessment of the potential transmission of animal
prion diseases to humans.
Technical Abstract:
Classical bovine spongiform encephalopathy (c-BSE) is an animal prion
disease that also causes variant Creutzfeldt-Jakob disease in humans. Over the
past decades, c-BSE's zoonotic potential has been the driving force in
establishing extensive protective measures for animal and human health. In
complement to the recent demonstration that humanized mice are susceptible to
scrapie, we report here the first observation of direct transmission of a
natural classical scrapie isolate to a macaque after a 10-year incubation
period. Neuropathologic examination revealed all of the features of a prion
disease: spongiform change, neuronal loss, and accumulation of PrPres throughout
the CNS.
***This observation strengthens the questioning of the harmlessness of
scrapie to humans, at a time when protective measures for human and animal
health are being dismantled and reduced as c-BSE is considered controlled and
being eradicated. Our results underscore the importance of precautionary and
protective measures and the necessity for long-term experimental transmission
studies to assess the zoonotic potential of other animal prion strains.
***This information will have a scientific impact since it is the first
study that demonstrates the transmission of scrapie to a non-human primate with
a close genetic relationship to humans. This information is especially useful to
regulatory officials and those involved with risk assessment of the potential
transmission of animal prion diseases to humans.
***This observation strengthens the questioning of the harmlessness of
scrapie to humans, at a time when protective measures for human and animal
health are being dismantled and reduced as c-BSE is considered controlled and
being eradicated. Our results underscore the importance of precautionary and
protective measures and the necessity for long-term experimental transmission
studies to assess the zoonotic potential of other animal prion strains.
PRION 2015 CONFERENCE FT. COLLINS CWD RISK FACTORS TO HUMANS
*** LATE-BREAKING ABSTRACTS PRION 2015 CONFERENCE ***
O18
Zoonotic Potential of CWD Prions
Liuting Qing1, Ignazio Cali1,2, Jue Yuan1, Shenghai Huang3, Diane Kofskey1,
Pierluigi Gambetti1, Wenquan Zou1, Qingzhong Kong1 1Case Western Reserve
University, Cleveland, Ohio, USA, 2Second University of Naples, Naples, Italy,
3Encore Health Resources, Houston, Texas, USA
*** These results indicate that the CWD prion has the potential to infect
human CNS and peripheral lymphoid tissues and that there might be asymptomatic
human carriers of CWD infection.
==================
***These results indicate that the CWD prion has the potential to infect
human CNS and peripheral lymphoid tissues and that there might be asymptomatic
human carriers of CWD infection.***
==================
P.105: RT-QuIC models trans-species prion transmission
Kristen Davenport, Davin Henderson, Candace Mathiason, and Edward Hoover
Prion Research Center; Colorado State University; Fort Collins, CO USA
Conversely, FSE maintained sufficient BSE characteristics to more
efficiently convert bovine rPrP than feline rPrP. Additionally, human rPrP was
competent for conversion by CWD and fCWD.
***This insinuates that, at the level of protein:protein interactions, the
barrier preventing transmission of CWD to humans is less robust than previously
estimated.
================
***This insinuates that, at the level of protein:protein interactions, the
barrier preventing transmission of CWD to humans is less robust than previously
estimated.***
================
*** PRICE OF CWD TSE PRION POKER GOES UP 2014 ***
Transmissible Spongiform Encephalopathy TSE PRION update January 2, 2014
*** chronic wasting disease, there was no absolute barrier to conversion of
the human prion protein.
*** Furthermore, the form of human PrPres produced in this in vitro assay
when seeded with CWD, resembles that found in the most common human prion
disease, namely sCJD of the MM1 subtype.
*** These results would seem to suggest that CWD does indeed have zoonotic
potential, at least as judged by the compatibility of CWD prions and their human
PrPC target. Furthermore, extrapolation from this simple in vitro assay suggests
that if zoonotic CWD occurred, it would most likely effect those of the PRNP
codon 129-MM genotype and that the PrPres type would be similar to that found in
the most common subtype of sCJD (MM1).***
*** The potential impact of prion diseases on human health was greatly
magnified by the recognition that interspecies transfer of BSE to humans by beef
ingestion resulted in vCJD. While changes in animal feed constituents and
slaughter practices appear to have curtailed vCJD, there is concern that CWD of
free-ranging deer and elk in the U.S. might also cross the species barrier.
Thus, consuming venison could be a source of human prion disease. Whether BSE
and CWD represent interspecies scrapie transfer or are newly arisen prion
diseases is unknown. Therefore, the possibility of transmission of prion disease
through other food animals cannot be ruled out. There is evidence that vCJD can
be transmitted through blood transfusion. There is likely a pool of unknown size
of asymptomatic individuals infected with vCJD, and there may be asymptomatic
individuals infected with the CWD equivalent. These circumstances represent a
potential threat to blood, blood products, and plasma supplies.
kind regards, terry
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