Prion diseases are efficiently transmitted by blood transfusion in sheep
TRANSFUSION MEDICINE
Prion diseases are efficiently transmitted by blood transfusion in sheep
Fiona Houston1, Sandra McCutcheon1, Wilfred Goldmann2, Angela Chong2, James Foster2, Silvia Sisó3, Lorenzo González3, Martin Jeffrey3, and Nora Hunter2 1 Neuropathogenesis Division, Roslin Institute, Compton, United Kingdom; 2 Neuropathogenesis Division, Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom; and 3 Lasswade Laboratory, Veterinary Laboratories Agency, Penicuik, United Kingdom
The emergence of variant Creutzfeld-Jakob disease, following on from the bovine spongiform encephalopathy (BSE) epidemic, led to concerns about the potential risk of iatrogenic transmission of disease by blood transfusion and the introduction of costly control measures to protect blood supplies. We previously reported preliminary data demonstrating the transmission of BSE and natural scrapie by blood transfusion in sheep. The final results of this experiment, reported here, give unexpectedly high transmission rates by transfusion of 36% for BSE and 43% for scrapie. A proportion of BSE-infected tranfusion recipients (3 of 8) survived for up to 7 years without showing clinical signs of disease. The majority of transmissions resulted from blood collected from donors at more than 50% of the estimated incubation period. The high transmission rates and relatively short and consistent incubation periods in clinically positive recipients suggest that infectivity titers in blood were substantial and/or that blood transfusion is an efficient method of transmission. This experiment has established the value of using sheep as a model for studying transmission of variant Creutzfeld-Jakob disease by blood products in humans.
http://bloodjournal.hematologylibrary.org/cgi/content/abstract/112/12/4739?ct
Plasma & Serum Proteins Receive Continued FDA Approval
4/25/2008
APC, Inc. is pleased to advise our customers and industry partners that as anticipated, the Food and Drug Administration (FDA) will continue to allow the use of bovine blood, plasma and serum proteins in ruminant feeds.
In April 2008 FDA announced the publication of its Final Rule for 21 CFR Part 589.2001 - Substances Prohibited From Use in Animal Food or Feed. FDA specifically stated in their opinion that, "FDA is not prohibiting the use of blood and blood products in animal feed because we believe such a prohibition would do very little to reduce the risk of BSE transmission."
Known as a leader in developing nutritional products for the swine industry, where 95% of pig starter diets in the United States contain functional proteins, APC has more recently developed their line of colostrum replacers, supplements, feed additives and milk replacer ingredients for calves. Products include plasma, serum and immunoglobulin concentrate based Acquire®, Lifeline®, Gammulin® and Nutrapro® used to optimize the health and performance of calves.
To view the full report for Final Rule 21 CFR Part 589.2001 visit:
http://www.fda.gov/OHRMS/DOCKETS/98fr/FDA-2002-N-0031-nfr.pdf
To view the complete Feed Rule 21 CFR Part 589 visit:
http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?CFRPart=589&showFR=1
----- Original Message -----
From: Terry S. Singeltary Sr.
To: FREAS@CBER.FDA.GOVCc: william.freas@fda.hhs.gov ; rosanna.harvey@fda.hhs.gov
Sent: Wednesday, November 29, 2006 1:24 PM
Subject: TSE advisory committee for the meeting December 15, 2006 [TSSSUBMISSION]
November 29, 2006
Greetings FDA, DHH, Dr. Freas, and Dr. Harvey et al, a kind and warm Holiday Greetings to you all. i kindly wish to submit the following to the TSE advisory committee for the meeting December 15, 2006, about the assessment for potential exposure to vCJD in human plasma-derived antihemophilic factor (FVIII) products manufactured from U.S. plasma donors and related communication material ;
http://a257.g.akamaitech.net/7/257/2422/01jan20061800/edocket.access.gpo.gov/2006/E6-20251.htm
i see the media picked up on this as a 'low risk', from what the gov. agency perceived to be to them;
http://www.newsday.com/news/health/ats-ap_health14nov27,0,7955259.story?coll=ny-leadhealthnews-headlines
however, i seem to disagree. from my primitive ciphering, i see it another way. this is a huge catastrophic risk. 3 in 160 is 1.9%. so call that 2% which is 1 in 50 or twenty per thousand or 20,000 per million. also, what about the mixed genotypes/mixed susceptibility? what about the silent carriers that donated tainted blood? what about the sporadic CJDs of UNKNOWN strain or phenotype? this risk assessment is just more BSe to me. just another in a long line of industry fed crap. i pray that my assessment is the one that is wrong. but it is THEY who roll the dice with your life. it is THEY who refuse to regulate an industry that has run amok. just from a recall aspect of potentially tainted blood, and these are just recent recalls ;
PRODUCT
Source Plasma, Recall # B-0054-7CODEUnits: 03MMNC5465, 03MMNC6361, 03MMNC6801, 03MMNC7510, 03MMNC7891,03MMNC8252, 03MMNC8801, 03MMNC9144, 03MMND1122, 03MMND1478, 03MMND1969,03MMND2350, 03MMND2825, 03MMND3211, 03MMND3708, 03MMND4072, 03MMND4588,03MMND4831, 03MMND5320, 03MMND5719, 03MMND6268, 03MMND6683, 03MMND7228,03MMND7656, 03MMND8211, 03MMND8652, 03MMND9195, 03MMND9618, 03MMNE0628,03MMNE0884, 03MMNE1597, 03MMNE1979, 03MMNE2644, 03MMNE3064, 03MMNE3707,03MMNE4122, 03MMNE4750, 03MMNE5080, 03MMNE5876, 03MMNE6218, 03MMNE7189,03MMNE7587, 03MMNE8027, 03MMNE8645, 03MMNE9029, 03MMNE9641, 03MMNE9979,03MMNF0491, 03MMNF0685, 03MMNF0937, 03MMNF1260, 04MMNA0351, 04MMNA0707,04MMNA1241, 04MMNA1650, 04MMNA2291, 04MMNA2646, 04MMNA3340, 04MMNA3719,04MMNA4312, 04MMNA4683, 04MMNA5298, 04MMNA5750, 04MMNA6407, 04MMNA6816,04MMNA7482, 04MMNA7915, 04MMNA8632, 04MMNA9076, 04MMNA9723, 04MMNB0063,04MMNB0696, 04MMNB1100, 04MMNB1845, 04MMNB2285, 04MMNB3035, 04MMNB3485,04MMNB4213, 04MMNB4672, 04MMNB5841, 04MMNB6652, 04MMNB7162, 04MMNB7930,04MMNB8453, 04MMNB9239, 04MMNB9747, 04MMNC0456, 04MMNC0931, 04MMNC1578RECALLING FIRM/MANUFACTURERBioLife Plasma Services, L.P., Mankato, MN, by facsimile on June 4, 2004.Firm initiated recall is complete.REASONBlood products, collected from a donor who was at increased risk for newvariant Creutzfeldt-Jakob Disease (nvCJD), were distributed.
VOLUME OF PRODUCT IN COMMERCE
89 unitsDISTRIBUTIONCA and Austria
END OF ENFORCEMENT REPORT FOR October 25, 2006###
http://www.fda.gov/bbs/topics/enforce/2006/ENF00975.html
USA FDA MAD COW BLOOD HUMANS RECALL (these are dime a dozen)
RECALLS AND FIELD CORRECTIONS: BIOLOGICS -- CLASS II______________________________PRODUCTSource Plasma, Recall # B-1708-6CODEUnits: MI180733, MI180927, MI181625, MI181780, MI182337, MI182519, MI183140,MI183311, MI183955, MI185006, MI185278, MI185822, MI186081, MI186855,MI187183, MI187903, MI188273, MI188695, MI189257, MI189553, MI190136,MI190473, MI191073, MI191395, MI191972, MI192303, MI193473, MI194343,04MINA0377, 04MINA0801, 05MINA7147, 05MINA7451, 05MINA8094, 05MINA8504,05MINA9548, 05MINA9883, 05MINB0489, 05MINB0875, 05MINB1469, 05MINB1874,05MINB3116, 05MINB7192, 05MINB7529, 05MINB8246, 05MINB8612, 05MINB9236,05MINB9366, 05MINB9475, 05MINB9641, 05MINC0031, 05MINC0237, 05MINC0336,05MINC0894, 05MINC0964, 05MINC1138, 05MINC1619, 05MINC1750, 05MINC1907,05MINC1977, 05MINC2375, 05MINC2774, 05MINC3113, 05MINC3484, 05MINC4277,05MINC4623, 05MINC5623, 05MINC5914, 05MINC7545, 05MINC7870, 05MINC8355,05MINC8689, 05MINC9437, 05MINC9775, 05MIND0067, 05MIND0393, 05MIND0892,05MIND0951, 05MIND1836, 05MIND2183 and 05MIND2962RECALLING FIRM/MANUFACTURERBioLife Plasma Services L.P., Muncie, IN, by facsimile on November 22, 2005.Firm initiated recall is complete.REASONBlood products, collected from unsuitable donors based on risk factors forCreutzfeldt-Jakob Disease (CJD), were distributed.VOLUME OF PRODUCT IN COMMERCE80 unitsDISTRIBUTIONCA, NC, and MD______________________________
PRODUCTa) Red Blood Cells, Leukocytes Reduced, Recall # B-1714-6;b) Fresh Frozen Plasma, Recall # B-1715-6;c) Platelets, Recall # B-1716-6CODEa), b), and c) Unit: 2443732
RECALLING FIRM/MANUFACTURERSouth Texas Blood and Tissue Center, San Antonio, TX, by letters datedNovember 11, 2003 and December 18, 2003. Firm initiated recall is complete.REASONBlood products, co lected from a donor who was at increased risk for newvariant Creutzfeldt-Jakob Disease (nvCJD), were distributed.
VOLUME OF PRODUCT IN COMMERCE3 unitsDISTRIBUTIONTX and WIEND OF ENFORCEMENT REPORT FOR SEPTEMBER 13, 2006###
http://www.fda.gov/bbs/topics/enforce/2006/ENF00969.html
PRODUCT
Fresh Frozen Plasma, Recall # B-1751-6CODEUnit: 4936623RECALLING FIRM/MANUFACTURERGulf Coast Regional Blood Center, Houston, TX, by facsimile dated September16, 2005. Firm initiated recall is complete.REASONBlood product, which was collected from an unsuitable donor based on riskfactors for variant Creutzfeldt-Jakob Disease (vCJD), was distributed.
VOLUME OF PRODUCT IN COMMERCE
1 unit DISTRIBUTION TX
END OF ENFORCEMENT REPORT FOR SEPTEMBER 6, 2006###
http://www.fda.gov/bbs/topics/enforce/2006/ENF00968.html
Mon Aug 7, 2006 10:2471.248.132.189
PRODUCTa) Red Blood Cells, Recall # B-1587-6;b) Cryoprecipitated AHF, Recall # B-1588-6;c) Recovered Plasma, Recal # B-1589-6CODEa), b) and c) Unit: 2016719RECALLING FIRM/MANUFACTURERWalter Shepeard Community Blood Center, Inc., Augusta, GA, by facsimile onMarch 13, 2003. Firm initiated recall is complete.REASONBlood products, which were collected from a donor who may be at increasedrisk for variant Creutzfeldt-Jakob Disease (vCJD), were distributed.
VOLUME OF PRODUCT IN COMMERCE 3 units DISTRIBUTION GA and Germany______________________________
PRODUCT
a) Red Blood Cells Leukocytes Reduced, Recall # B-1590-6;b) Fresh Frozen Plasma, Recall # B-1591-6CODEa) and b) Unit: 2443595RECALLING FIRM/MANUFACTURERSouth Texas Blood and Tissue Center, San Antonio, TX, by facsimile on June30, 2004. Firm initiated recall is complete.
REASON
Blood products, which were collected from a donor who may be at increasedrisk for variant Creutzfeldt-Jakob Disease (vCJD), were distributed.
VOLUME OF PRODUCT IN COMMERCE 2 units DISTRIBUTION TX______________________________
PRODUCT
a) Red Blood Cells Leukocytes Reduced, Recall # B-1592-6;b) Fresh Frozen Plasma, Recall # B-1593-6CODEa) and b) Unit: 2545596RECALLING FIRM/MANUFACTURERSouth Texas Blood and Tissue Center, San Antonio, TX, by facsimile onDecember 14, 2004 and January 3, 2005. Firm initiated recall is complete.REASONBlood products, which were collected from a donor who may be at increasedrisk for variant Creutzfeldt-Jakob Disease (vCJD), were distributed.
VOLUME OF PRODUCT IN COMMERCE 2 units DISTRIBUTION TX______________________________
http://www.fda.gov/bbs/topics/enforce/2006/ENF00963.html
SNIP...FULL TEXT ;
http://www.regulations.gov/fdmspublic/ContentViewer?objectId=09000064801f3413&disposition=attachment&contentType=msw8
http://creutzfeldt-jakob-disease.blogspot.com/2008/10/cber-2007-annual-report-assessing.html
http://www.fda.gov/OHRMS/DOCKETS/ac/06/transcripts/2006-4271t1.pdf
Friday, October 24, 2008
CBER 2007 Annual Report Assessing the Potential Risk of variant Creutzfeldt-Jakob Disease from Blood Products
http://creutzfeldt-jakob-disease.blogspot.com/2008/10/cber-2007-annual-report-assessing.html
Docket APHIS-2006-0041 Docket Title Bovine Spongiform Encephalopathy; Minimal-Risk Regions; Importation of Live Bovines and Products Derived from Bovines Commodities Docket Type Rulemaking Document APHIS-2006-0041-0001 Document Title Bovine Spongiform Encephalopathy; Minimal-Risk Regions; Importation of Live Bovines and Products Derived From Bovines Public Submission APHIS-2006-0041-0006.1 Public Submission Title Attachment to Singletary comment
http://www.regulations.gov/fdmspublic/ContentViewer?objectId=09000064801f3412&disposition=attachment&contentType=crtext
http://www.regulations.gov/fdmspublic/component/main?main=DocumentDetail&d=APHIS-2006-0041-0006.1
http://www.regulations.gov/fdmspublic/ContentViewer?objectId=09000064801f3413&disposition=attachment&contentType=msw8
TSS
Tuesday, November 11, 2008
SaBTO Summary of 1st Public Meeting - variant CJD and blood Tuesday 21st October 2008, 2pm-4pm
http://vcjdblood.blogspot.com/2008/11/sabto-summary-of-1st-public-meeting.html
Friday, November 21, 2008
Amarillo-area (suspect sporadic CJD) case linked to mad cow disease Rumor in Texas
http://cjdtexas.blogspot.com/2008/11/amarillo-area-suspect-sporadic-cjd-case.html
ONE HUNDRED AND FIRST MEETING OF THE SPONGIFORM ENCEPHALOPATHY ADVISORY COMMITTEE
Oct 23, 2008 at 9:00 AM
http://seac992007.blogspot.com/2008/10/one-hundred-and-first-meeting-of_23.html
http://flounder068.vox.com/library/post/one-hundred-and-first-meeting-of-the-spongiform-encephalopathy-advisory-committee.html
Wednesday, June 11, 2008
OIE Recognition of the BSE Status of Members RESOLUTION No. XXI (Adopted by the International Committee of the OIE on 27 May 2008)
snip...SEE FULL TEXT with facts and sources @ ;
http://usdavskorea.blogspot.com/2008/06/oie-recognition-of-bse-status-of.html
http://organicconsumers.org/forum/index.php?showtopic=1566
Friday, April 25, 2008
Substances Prohibited From Use in Animal Food or Feed [Docket No. 2002N-0273] (Formerly Docket No. 02N-0273) RIN 0910-AF46
http://madcowfeed.blogspot.com/2008/04/substances-prohibited-from-use-in.html
Review on the epidemiology and dynamics of BSE epidemics
Cases of atypical BSE have only been found in countries having implemented large active surveillance programs. As of 1st September 2007, 36 cases (16 H, 20 L) have been described all over the world in cattle: Belgium (1 L) [23], Canada (1 H)15, Denmark (1 L)16, France (8 H, 6 L)17, Germany (1 H, 1 L) [13], Italy (3 L)18, Japan (1 L) [71], Netherlands (1 H, 2 L)19, Poland (1 H, 6 L)20, Sweden (1 H)21, United Kingdom (1 H)22, and USA (2 H)23. Another H-type case has been found in a 19 year old miniature zebu in a zoological park in Switzerland [56]. It is noteworthy that atypical cases have been found in countries that did not experience classical BSE so far, like Sweden, or in which only few cases of classical BSE have been found, like Canada or the USA.
And last but not least, similarities of PrPres between Htype BSE and human prion diseases like CJD or GSS have been put forward [10], as well as between L-type BSE and CJD [17]. These findings raise questions about the origin and inter species transmission of these prion diseases that were discovered through the BSE active surveillance.
full text 18 pages ;
http://www.vetres.org/index.php?option=article&access=standard&Itemid=129&url=/articles/vetres/pdf/2008/04/v07232.pdf
USA BSE ACTIVE SURVEILLANCE ???
http://bse-atypical.blogspot.com/2008/06/review-on-epidemiology-and-dynamics-of.html
Please remember, the last two mad cows documented in the USA i.e. Alabama and Texas, both were of the 'atypical' BSE strain, and immediately after that, the USDA shut down the testing from 470,000 to 40,000 in the U.S. in 2007 out of about 35 million cattle slaughtered. also, science is showing that some of these atypical cases are more virulent to humans than the typical UK BSE strain ;
***Atypical forms of BSE have emerged which, although rare, appear to be more virulent than the classical BSE that causes vCJD.***
Progress Report from the National Prion Disease Pathology Surveillance Center
An Update from Stephen M. Sergay, MB, BCh & Pierluigi Gambetti, MD
April 3, 2008
http://www.aan.com/news/?event=read&article_id=4397&page=72.45.45
In this context, a word is in order about the US testing program. After the discovery of the first (imported) cow in 2003, the magnitude of testing was much increased, reaching a level of >400,000 tests in 2005 (Figure 4). Neither of the 2 more recently indigenously infected older animals with nonspecific clinical features would have been detected without such testing, and neither would have been identified as atypical without confirmatory Western blots. Despite these facts, surveillance has now been decimated to 40,000 annual tests (USDA news release no. 0255.06, July 20, 2006) and invites the accusation that the United States will never know the true status of its involvement with BSE.
In short, a great deal of further work will need to be done before the phenotypic features and prevalence of atypical BSE are understood. More than a single strain may have been present from the beginning of the epidemic, but this possibility has been overlooked by virtue of the absence of widespread Western blot confirmatory testing of positive screening test results; or these new phenotypes may be found, at least in part, to result from infections at an older age by a typical BSE agent, rather than neonatal infections with new "strains" of BSE. Neither alternative has yet been investigated.
http://www.cdc.gov/ncidod/EID/vol12no12/06-0965.htm
Tuesday, June 3, 2008
SCRAPIE USA UPDATE JUNE 2008 NOR-98 REPORTED PA
http://nor-98.blogspot.com/2008/06/scrapie-usa-update-june-2008-nor-98.html
Friday, August 29, 2008 CREEKSTONE VS USDA COURT OF APPEALS, BUSH SAYS, NO WAY, NO HOW
http://madcowtesting.blogspot.com/2008/08/creekstone-vs-usda-court-of-appeals.html
Friday, November 21, 2008
Plasma & Serum Proteins Receive Continued FDA Approval
http://madcowfeed.blogspot.com/2008/11/plasma-serum-proteins-receive-continued.html
http://madcowfeed.blogspot.com/
PRION October 8th - 10th 2008 Book of Abstracts
snip...
0C3.01
Transmission of atypical BSE to Microcebus murinus, a non-human primate: Development of clinical symptoms and tissue distribution of PrPres
Background: Atypical BSE cases have been observed in Europe, Japan and North America. They differ in their PrPres profiles from those found in classical BSE. These atypical cases fall into 2 types, depending on the molecular mass of the unglycosylated PrPres band observed by Western blot: the L -type (lower molecular mass than the typical BSE cases) and H-type (higher molecular mass than the typical BSE cases).
Objectives and Methods: In order to see if the atypical BSE cases were transmissible to primates, either animals (were intracerebrally inoculated with 50 ul of a 10% brain homogenates of two atypical French BSE case, a H-type (2 males and 2 females) and a L-type (2 males and 2 females).
Results: Only one of the four lemurs challenged with H-type BSE died without clinical signs after 19 months post inoculation (mpi), whereas all the 4 animals inoculated with L -type BSE died at 19 mpi (2 males) and 22 mpi (2 females). Three months before their sacrifice, they developed blindness, tremor, abnormal posture, incoordinated movements, balance loss. Symptoms got worse according to the disease progression, until severe ataxia. The brain tissue were biochemically and immunocytochemically investigated for PrPres. For the H-type, spongiform changes without PrPres accumulation were observed in the brainstem. However Western blot analysis did not allow to detect PrPres into the brain. For the L-type, severe spongiosis was evidenced into the thalamus, the striatum, the mesencephalon, and the brainstem. whereas into the cortex the spongiosis was evidenced, but the Vacuolisation was weaker. Strong deposits of PrPres were detected by western blot, PET-blot and immunocytochemistry in the CNS: dense accumulation was observed into the thalamus, the striatum, and the hippocampus whereas in the cerebral cortex, PrPres was prominently accumulated in plaques. Western blot analysis also readily confirmed the presence of protease-resistant prion protein.
Conclusions: L-type infected lemurs showed survival times considerably shorter than for classical BSE strain, indicating that the disease is caused by a very virulent distinct prion strain in a model of non human primate.
http://www.neuroprion.org/resources/pdf_docs/conferences/prion2008/abstract-book-prion2008.pdf
P7.09
Biochemical screening for identification of atypical bse in belgium, 1999-present
Authors
Alexandre DobIy: Caroline Rodeghiero, Riet Geeroms; Stephanie Durand, Jessica De Sloovere, Emanuel Yanopdenbosch, Stefan Roels,
Content
Background: Recently atypical forms of BSE have been described. Western blot analyses showed that, in comparison to the classic BSE (C-type), they are demonstrable by a higher or lower molecular weight of the unglycosylated PrPres. They Viere thus named H-type and L-type BSE (L-type is also called BASE). In addition they show a lower proportion of diglycosylated PrPres than C-type. These emerging types represent different strains of BSE. They show unique incubation periods and histological lesions. Such types have been described on different continents. Indeed they might correspond to "sporadic" forms of BSE. In 2004 we already described one L-type in Belgium.
Objective: We retrospectively analysed the bovines at least 7-year-old in the Belgian archive of BSE diagnosed cattle in order to determine the prevalence of the two types of atypical BSE in Belgium.
Methods: We analysed homogenates from 39 bovines of 93 months old in median (min: 84, max: 181 months). The most recent one was diagnosed in 2006. We used Western blot with a panel of anti-PrP antibodies (Ab). They detect different regions of the PrP protein, from N-terminal to C-terminal: 12B2, 9A2, Sha31. SAFB4, 94B4. Their combination is aimed at an efficient typing diagnostic. We detected bound Ab with SuperSignal West Dura (Pierce) and analysed PrPres, signals with an image-analysis software (Quantity One, Bio-Rad).
Results: The results are still under analysis. We will detail the most crucial characteristics for typing PrPres. These include 1) the apparent molecular mass of the an-, mono- and diglycosylated bands, 2) the binding affinity to the five Ab (e.g.12B2 for H-type), 3) the presence of a fourth (unglycosylated) band and 4) the glycoprofile based on the relative proportions of the visible bands.
Discussion: The emergence of atypical types of BSE is partially due to a better knowledge of prion strains and more efficient diagnostic techniques. As the area in the brain where the PrPres is deposited can differ drastically between the types, it is essential to ascertain that the sampling techniques and analyses are adapted to these new types. As these new strains seem more virulent than classic types, they represent one of the next challenges in the field of prions.
http://www.neuroprion.org/resources/pdf_docs/conferences/prion2008/abstract-book-prion2008.pdf
http://www.prion2008.com/
Tuesday, November 11, 2008
Transmission of atypical bovine prions to mice transgenic for human prion protein
DOI: 10.3201/eid1412.080941
http://bse-atypical.blogspot.com/2008/11/transmission-of-atypical-bovine-prions.html
Wednesday, August 20, 2008
Bovine Spongiform Encephalopathy Mad Cow Disease typical and atypical strains, was there a cover-up ?
http://bse-atypical.blogspot.com/2008/08/bovine-spongiform-encephalopathy-mad.html
Tuesday, June 3, 2008 SCRAPIE USA UPDATE JUNE 2008 NOR-98 REPORTED PA
http://nor-98.blogspot.com/2008/06/scrapie-usa-update-june-2008-nor-98.html
SCRAPIE USA
http://scrapie-usa.blogspot.com/
Sunday, September 07, 2008
CWD LIVE TEST, and the political aspects or fallout of live testing for BSE in cattle in the USA
http://chronic-wasting-disease.blogspot.com/2008/09/cwd-live-test-and-political-aspects-or.html
Saturday, October 18, 2008 WYOMING STAR VALLEY MOOSE TESTS POSITIVE FOR CWD
http://chronic-wasting-disease.blogspot.com/2008/10/wyoming-star-valley-moose-tests.html
http://chronic-wasting-disease.blogspot.com/
Saturday, December 01, 2007 Phenotypic Similarity of Transmissible Mink Encephalopathy in Cattle and L-type Bovine Spongiform Encephalopathy in a Mouse Model Volume 13, Number 12-December 2007 Research
snip...see full text ;
http://transmissible-mink-encephalopathy.blogspot.com/2007/12/phenotypic-similarity-of-transmissible.html
A New Prionopathy OR more of the same old BSe and sporadic CJD
http://creutzfeldt-jakob-disease.blogspot.com/2008/08/new-prionopathy-or-more-of-same-old-bse.html
Sunday, April 20, 2008 Progress Report from the National Prion Disease Pathology Surveillance Center April 3, 2008
Atypical forms of BSE have emerged which, although rare, appear to be more virulent than the classical BSE that causes vCJD.
see full text ;
http://prionunitusaupdate2008.blogspot.com/2008/04/progress-report-from-national-prion.html
ONE HUNDRED AND FIRST MEETING OF THE SPONGIFORM ENCEPHALOPATHY ADVISORY COMMITTEE Oct 23, 2008 at 9:00 AM
http://seac992007.blogspot.com/2008/10/one-hundred-and-first-meeting-of_23.html
http://flounder068.vox.com/library/post/one-hundred-and-first-meeting-of-the-spongiform-encephalopathy-advisory-committee.html
Friday, November 21, 2008
Plasma & Serum Proteins Receive Continued FDA Approval
http://madcowfeed.blogspot.com/2008/11/plasma-serum-proteins-receive-continued.html
http://madcowfeed.blogspot.com/
Sunday, November 23, 2008 PRION October 8th - 10th 2008 Book of Abstracts
http://bse-atypical.blogspot.com/2008/11/prion-october-8th-10th-2008-book-of.html
Terry S. Singeltary Sr., P.O. Box 42, Bacliff, Texas USA 77518
Prion diseases are efficiently transmitted by blood transfusion in sheep
Fiona Houston1, Sandra McCutcheon1, Wilfred Goldmann2, Angela Chong2, James Foster2, Silvia Sisó3, Lorenzo González3, Martin Jeffrey3, and Nora Hunter2 1 Neuropathogenesis Division, Roslin Institute, Compton, United Kingdom; 2 Neuropathogenesis Division, Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom; and 3 Lasswade Laboratory, Veterinary Laboratories Agency, Penicuik, United Kingdom
The emergence of variant Creutzfeld-Jakob disease, following on from the bovine spongiform encephalopathy (BSE) epidemic, led to concerns about the potential risk of iatrogenic transmission of disease by blood transfusion and the introduction of costly control measures to protect blood supplies. We previously reported preliminary data demonstrating the transmission of BSE and natural scrapie by blood transfusion in sheep. The final results of this experiment, reported here, give unexpectedly high transmission rates by transfusion of 36% for BSE and 43% for scrapie. A proportion of BSE-infected tranfusion recipients (3 of 8) survived for up to 7 years without showing clinical signs of disease. The majority of transmissions resulted from blood collected from donors at more than 50% of the estimated incubation period. The high transmission rates and relatively short and consistent incubation periods in clinically positive recipients suggest that infectivity titers in blood were substantial and/or that blood transfusion is an efficient method of transmission. This experiment has established the value of using sheep as a model for studying transmission of variant Creutzfeld-Jakob disease by blood products in humans.
http://bloodjournal.hematologylibrary.org/cgi/content/abstract/112/12/4739?ct
Plasma & Serum Proteins Receive Continued FDA Approval
4/25/2008
APC, Inc. is pleased to advise our customers and industry partners that as anticipated, the Food and Drug Administration (FDA) will continue to allow the use of bovine blood, plasma and serum proteins in ruminant feeds.
In April 2008 FDA announced the publication of its Final Rule for 21 CFR Part 589.2001 - Substances Prohibited From Use in Animal Food or Feed. FDA specifically stated in their opinion that, "FDA is not prohibiting the use of blood and blood products in animal feed because we believe such a prohibition would do very little to reduce the risk of BSE transmission."
Known as a leader in developing nutritional products for the swine industry, where 95% of pig starter diets in the United States contain functional proteins, APC has more recently developed their line of colostrum replacers, supplements, feed additives and milk replacer ingredients for calves. Products include plasma, serum and immunoglobulin concentrate based Acquire®, Lifeline®, Gammulin® and Nutrapro® used to optimize the health and performance of calves.
To view the full report for Final Rule 21 CFR Part 589.2001 visit:
http://www.fda.gov/OHRMS/DOCKETS/98fr/FDA-2002-N-0031-nfr.pdf
To view the complete Feed Rule 21 CFR Part 589 visit:
http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?CFRPart=589&showFR=1
----- Original Message -----
From: Terry S. Singeltary Sr.
To: FREAS@CBER.FDA.GOVCc: william.freas@fda.hhs.gov ; rosanna.harvey@fda.hhs.gov
Sent: Wednesday, November 29, 2006 1:24 PM
Subject: TSE advisory committee for the meeting December 15, 2006 [TSSSUBMISSION]
November 29, 2006
Greetings FDA, DHH, Dr. Freas, and Dr. Harvey et al, a kind and warm Holiday Greetings to you all. i kindly wish to submit the following to the TSE advisory committee for the meeting December 15, 2006, about the assessment for potential exposure to vCJD in human plasma-derived antihemophilic factor (FVIII) products manufactured from U.S. plasma donors and related communication material ;
http://a257.g.akamaitech.net/7/257/2422/01jan20061800/edocket.access.gpo.gov/2006/E6-20251.htm
i see the media picked up on this as a 'low risk', from what the gov. agency perceived to be to them;
http://www.newsday.com/news/health/ats-ap_health14nov27,0,7955259.story?coll=ny-leadhealthnews-headlines
however, i seem to disagree. from my primitive ciphering, i see it another way. this is a huge catastrophic risk. 3 in 160 is 1.9%. so call that 2% which is 1 in 50 or twenty per thousand or 20,000 per million. also, what about the mixed genotypes/mixed susceptibility? what about the silent carriers that donated tainted blood? what about the sporadic CJDs of UNKNOWN strain or phenotype? this risk assessment is just more BSe to me. just another in a long line of industry fed crap. i pray that my assessment is the one that is wrong. but it is THEY who roll the dice with your life. it is THEY who refuse to regulate an industry that has run amok. just from a recall aspect of potentially tainted blood, and these are just recent recalls ;
PRODUCT
Source Plasma, Recall # B-0054-7CODEUnits: 03MMNC5465, 03MMNC6361, 03MMNC6801, 03MMNC7510, 03MMNC7891,03MMNC8252, 03MMNC8801, 03MMNC9144, 03MMND1122, 03MMND1478, 03MMND1969,03MMND2350, 03MMND2825, 03MMND3211, 03MMND3708, 03MMND4072, 03MMND4588,03MMND4831, 03MMND5320, 03MMND5719, 03MMND6268, 03MMND6683, 03MMND7228,03MMND7656, 03MMND8211, 03MMND8652, 03MMND9195, 03MMND9618, 03MMNE0628,03MMNE0884, 03MMNE1597, 03MMNE1979, 03MMNE2644, 03MMNE3064, 03MMNE3707,03MMNE4122, 03MMNE4750, 03MMNE5080, 03MMNE5876, 03MMNE6218, 03MMNE7189,03MMNE7587, 03MMNE8027, 03MMNE8645, 03MMNE9029, 03MMNE9641, 03MMNE9979,03MMNF0491, 03MMNF0685, 03MMNF0937, 03MMNF1260, 04MMNA0351, 04MMNA0707,04MMNA1241, 04MMNA1650, 04MMNA2291, 04MMNA2646, 04MMNA3340, 04MMNA3719,04MMNA4312, 04MMNA4683, 04MMNA5298, 04MMNA5750, 04MMNA6407, 04MMNA6816,04MMNA7482, 04MMNA7915, 04MMNA8632, 04MMNA9076, 04MMNA9723, 04MMNB0063,04MMNB0696, 04MMNB1100, 04MMNB1845, 04MMNB2285, 04MMNB3035, 04MMNB3485,04MMNB4213, 04MMNB4672, 04MMNB5841, 04MMNB6652, 04MMNB7162, 04MMNB7930,04MMNB8453, 04MMNB9239, 04MMNB9747, 04MMNC0456, 04MMNC0931, 04MMNC1578RECALLING FIRM/MANUFACTURERBioLife Plasma Services, L.P., Mankato, MN, by facsimile on June 4, 2004.Firm initiated recall is complete.REASONBlood products, collected from a donor who was at increased risk for newvariant Creutzfeldt-Jakob Disease (nvCJD), were distributed.
VOLUME OF PRODUCT IN COMMERCE
89 unitsDISTRIBUTIONCA and Austria
END OF ENFORCEMENT REPORT FOR October 25, 2006###
http://www.fda.gov/bbs/topics/enforce/2006/ENF00975.html
USA FDA MAD COW BLOOD HUMANS RECALL (these are dime a dozen)
RECALLS AND FIELD CORRECTIONS: BIOLOGICS -- CLASS II______________________________PRODUCTSource Plasma, Recall # B-1708-6CODEUnits: MI180733, MI180927, MI181625, MI181780, MI182337, MI182519, MI183140,MI183311, MI183955, MI185006, MI185278, MI185822, MI186081, MI186855,MI187183, MI187903, MI188273, MI188695, MI189257, MI189553, MI190136,MI190473, MI191073, MI191395, MI191972, MI192303, MI193473, MI194343,04MINA0377, 04MINA0801, 05MINA7147, 05MINA7451, 05MINA8094, 05MINA8504,05MINA9548, 05MINA9883, 05MINB0489, 05MINB0875, 05MINB1469, 05MINB1874,05MINB3116, 05MINB7192, 05MINB7529, 05MINB8246, 05MINB8612, 05MINB9236,05MINB9366, 05MINB9475, 05MINB9641, 05MINC0031, 05MINC0237, 05MINC0336,05MINC0894, 05MINC0964, 05MINC1138, 05MINC1619, 05MINC1750, 05MINC1907,05MINC1977, 05MINC2375, 05MINC2774, 05MINC3113, 05MINC3484, 05MINC4277,05MINC4623, 05MINC5623, 05MINC5914, 05MINC7545, 05MINC7870, 05MINC8355,05MINC8689, 05MINC9437, 05MINC9775, 05MIND0067, 05MIND0393, 05MIND0892,05MIND0951, 05MIND1836, 05MIND2183 and 05MIND2962RECALLING FIRM/MANUFACTURERBioLife Plasma Services L.P., Muncie, IN, by facsimile on November 22, 2005.Firm initiated recall is complete.REASONBlood products, collected from unsuitable donors based on risk factors forCreutzfeldt-Jakob Disease (CJD), were distributed.VOLUME OF PRODUCT IN COMMERCE80 unitsDISTRIBUTIONCA, NC, and MD______________________________
PRODUCTa) Red Blood Cells, Leukocytes Reduced, Recall # B-1714-6;b) Fresh Frozen Plasma, Recall # B-1715-6;c) Platelets, Recall # B-1716-6CODEa), b), and c) Unit: 2443732
RECALLING FIRM/MANUFACTURERSouth Texas Blood and Tissue Center, San Antonio, TX, by letters datedNovember 11, 2003 and December 18, 2003. Firm initiated recall is complete.REASONBlood products, co lected from a donor who was at increased risk for newvariant Creutzfeldt-Jakob Disease (nvCJD), were distributed.
VOLUME OF PRODUCT IN COMMERCE3 unitsDISTRIBUTIONTX and WIEND OF ENFORCEMENT REPORT FOR SEPTEMBER 13, 2006###
http://www.fda.gov/bbs/topics/enforce/2006/ENF00969.html
PRODUCT
Fresh Frozen Plasma, Recall # B-1751-6CODEUnit: 4936623RECALLING FIRM/MANUFACTURERGulf Coast Regional Blood Center, Houston, TX, by facsimile dated September16, 2005. Firm initiated recall is complete.REASONBlood product, which was collected from an unsuitable donor based on riskfactors for variant Creutzfeldt-Jakob Disease (vCJD), was distributed.
VOLUME OF PRODUCT IN COMMERCE
1 unit DISTRIBUTION TX
END OF ENFORCEMENT REPORT FOR SEPTEMBER 6, 2006###
http://www.fda.gov/bbs/topics/enforce/2006/ENF00968.html
Mon Aug 7, 2006 10:2471.248.132.189
PRODUCTa) Red Blood Cells, Recall # B-1587-6;b) Cryoprecipitated AHF, Recall # B-1588-6;c) Recovered Plasma, Recal # B-1589-6CODEa), b) and c) Unit: 2016719RECALLING FIRM/MANUFACTURERWalter Shepeard Community Blood Center, Inc., Augusta, GA, by facsimile onMarch 13, 2003. Firm initiated recall is complete.REASONBlood products, which were collected from a donor who may be at increasedrisk for variant Creutzfeldt-Jakob Disease (vCJD), were distributed.
VOLUME OF PRODUCT IN COMMERCE 3 units DISTRIBUTION GA and Germany______________________________
PRODUCT
a) Red Blood Cells Leukocytes Reduced, Recall # B-1590-6;b) Fresh Frozen Plasma, Recall # B-1591-6CODEa) and b) Unit: 2443595RECALLING FIRM/MANUFACTURERSouth Texas Blood and Tissue Center, San Antonio, TX, by facsimile on June30, 2004. Firm initiated recall is complete.
REASON
Blood products, which were collected from a donor who may be at increasedrisk for variant Creutzfeldt-Jakob Disease (vCJD), were distributed.
VOLUME OF PRODUCT IN COMMERCE 2 units DISTRIBUTION TX______________________________
PRODUCT
a) Red Blood Cells Leukocytes Reduced, Recall # B-1592-6;b) Fresh Frozen Plasma, Recall # B-1593-6CODEa) and b) Unit: 2545596RECALLING FIRM/MANUFACTURERSouth Texas Blood and Tissue Center, San Antonio, TX, by facsimile onDecember 14, 2004 and January 3, 2005. Firm initiated recall is complete.REASONBlood products, which were collected from a donor who may be at increasedrisk for variant Creutzfeldt-Jakob Disease (vCJD), were distributed.
VOLUME OF PRODUCT IN COMMERCE 2 units DISTRIBUTION TX______________________________
http://www.fda.gov/bbs/topics/enforce/2006/ENF00963.html
SNIP...FULL TEXT ;
http://www.regulations.gov/fdmspublic/ContentViewer?objectId=09000064801f3413&disposition=attachment&contentType=msw8
http://creutzfeldt-jakob-disease.blogspot.com/2008/10/cber-2007-annual-report-assessing.html
http://www.fda.gov/OHRMS/DOCKETS/ac/06/transcripts/2006-4271t1.pdf
Friday, October 24, 2008
CBER 2007 Annual Report Assessing the Potential Risk of variant Creutzfeldt-Jakob Disease from Blood Products
http://creutzfeldt-jakob-disease.blogspot.com/2008/10/cber-2007-annual-report-assessing.html
Docket APHIS-2006-0041 Docket Title Bovine Spongiform Encephalopathy; Minimal-Risk Regions; Importation of Live Bovines and Products Derived from Bovines Commodities Docket Type Rulemaking Document APHIS-2006-0041-0001 Document Title Bovine Spongiform Encephalopathy; Minimal-Risk Regions; Importation of Live Bovines and Products Derived From Bovines Public Submission APHIS-2006-0041-0006.1 Public Submission Title Attachment to Singletary comment
http://www.regulations.gov/fdmspublic/ContentViewer?objectId=09000064801f3412&disposition=attachment&contentType=crtext
http://www.regulations.gov/fdmspublic/component/main?main=DocumentDetail&d=APHIS-2006-0041-0006.1
http://www.regulations.gov/fdmspublic/ContentViewer?objectId=09000064801f3413&disposition=attachment&contentType=msw8
TSS
Tuesday, November 11, 2008
SaBTO Summary of 1st Public Meeting - variant CJD and blood Tuesday 21st October 2008, 2pm-4pm
http://vcjdblood.blogspot.com/2008/11/sabto-summary-of-1st-public-meeting.html
Friday, November 21, 2008
Amarillo-area (suspect sporadic CJD) case linked to mad cow disease Rumor in Texas
http://cjdtexas.blogspot.com/2008/11/amarillo-area-suspect-sporadic-cjd-case.html
ONE HUNDRED AND FIRST MEETING OF THE SPONGIFORM ENCEPHALOPATHY ADVISORY COMMITTEE
Oct 23, 2008 at 9:00 AM
http://seac992007.blogspot.com/2008/10/one-hundred-and-first-meeting-of_23.html
http://flounder068.vox.com/library/post/one-hundred-and-first-meeting-of-the-spongiform-encephalopathy-advisory-committee.html
Wednesday, June 11, 2008
OIE Recognition of the BSE Status of Members RESOLUTION No. XXI (Adopted by the International Committee of the OIE on 27 May 2008)
snip...SEE FULL TEXT with facts and sources @ ;
http://usdavskorea.blogspot.com/2008/06/oie-recognition-of-bse-status-of.html
http://organicconsumers.org/forum/index.php?showtopic=1566
Friday, April 25, 2008
Substances Prohibited From Use in Animal Food or Feed [Docket No. 2002N-0273] (Formerly Docket No. 02N-0273) RIN 0910-AF46
http://madcowfeed.blogspot.com/2008/04/substances-prohibited-from-use-in.html
Review on the epidemiology and dynamics of BSE epidemics
Cases of atypical BSE have only been found in countries having implemented large active surveillance programs. As of 1st September 2007, 36 cases (16 H, 20 L) have been described all over the world in cattle: Belgium (1 L) [23], Canada (1 H)15, Denmark (1 L)16, France (8 H, 6 L)17, Germany (1 H, 1 L) [13], Italy (3 L)18, Japan (1 L) [71], Netherlands (1 H, 2 L)19, Poland (1 H, 6 L)20, Sweden (1 H)21, United Kingdom (1 H)22, and USA (2 H)23. Another H-type case has been found in a 19 year old miniature zebu in a zoological park in Switzerland [56]. It is noteworthy that atypical cases have been found in countries that did not experience classical BSE so far, like Sweden, or in which only few cases of classical BSE have been found, like Canada or the USA.
And last but not least, similarities of PrPres between Htype BSE and human prion diseases like CJD or GSS have been put forward [10], as well as between L-type BSE and CJD [17]. These findings raise questions about the origin and inter species transmission of these prion diseases that were discovered through the BSE active surveillance.
full text 18 pages ;
http://www.vetres.org/index.php?option=article&access=standard&Itemid=129&url=/articles/vetres/pdf/2008/04/v07232.pdf
USA BSE ACTIVE SURVEILLANCE ???
http://bse-atypical.blogspot.com/2008/06/review-on-epidemiology-and-dynamics-of.html
Please remember, the last two mad cows documented in the USA i.e. Alabama and Texas, both were of the 'atypical' BSE strain, and immediately after that, the USDA shut down the testing from 470,000 to 40,000 in the U.S. in 2007 out of about 35 million cattle slaughtered. also, science is showing that some of these atypical cases are more virulent to humans than the typical UK BSE strain ;
***Atypical forms of BSE have emerged which, although rare, appear to be more virulent than the classical BSE that causes vCJD.***
Progress Report from the National Prion Disease Pathology Surveillance Center
An Update from Stephen M. Sergay, MB, BCh & Pierluigi Gambetti, MD
April 3, 2008
http://www.aan.com/news/?event=read&article_id=4397&page=72.45.45
In this context, a word is in order about the US testing program. After the discovery of the first (imported) cow in 2003, the magnitude of testing was much increased, reaching a level of >400,000 tests in 2005 (Figure 4). Neither of the 2 more recently indigenously infected older animals with nonspecific clinical features would have been detected without such testing, and neither would have been identified as atypical without confirmatory Western blots. Despite these facts, surveillance has now been decimated to 40,000 annual tests (USDA news release no. 0255.06, July 20, 2006) and invites the accusation that the United States will never know the true status of its involvement with BSE.
In short, a great deal of further work will need to be done before the phenotypic features and prevalence of atypical BSE are understood. More than a single strain may have been present from the beginning of the epidemic, but this possibility has been overlooked by virtue of the absence of widespread Western blot confirmatory testing of positive screening test results; or these new phenotypes may be found, at least in part, to result from infections at an older age by a typical BSE agent, rather than neonatal infections with new "strains" of BSE. Neither alternative has yet been investigated.
http://www.cdc.gov/ncidod/EID/vol12no12/06-0965.htm
Tuesday, June 3, 2008
SCRAPIE USA UPDATE JUNE 2008 NOR-98 REPORTED PA
http://nor-98.blogspot.com/2008/06/scrapie-usa-update-june-2008-nor-98.html
Friday, August 29, 2008 CREEKSTONE VS USDA COURT OF APPEALS, BUSH SAYS, NO WAY, NO HOW
http://madcowtesting.blogspot.com/2008/08/creekstone-vs-usda-court-of-appeals.html
Friday, November 21, 2008
Plasma & Serum Proteins Receive Continued FDA Approval
http://madcowfeed.blogspot.com/2008/11/plasma-serum-proteins-receive-continued.html
http://madcowfeed.blogspot.com/
PRION October 8th - 10th 2008 Book of Abstracts
snip...
0C3.01
Transmission of atypical BSE to Microcebus murinus, a non-human primate: Development of clinical symptoms and tissue distribution of PrPres
Background: Atypical BSE cases have been observed in Europe, Japan and North America. They differ in their PrPres profiles from those found in classical BSE. These atypical cases fall into 2 types, depending on the molecular mass of the unglycosylated PrPres band observed by Western blot: the L -type (lower molecular mass than the typical BSE cases) and H-type (higher molecular mass than the typical BSE cases).
Objectives and Methods: In order to see if the atypical BSE cases were transmissible to primates, either animals (were intracerebrally inoculated with 50 ul of a 10% brain homogenates of two atypical French BSE case, a H-type (2 males and 2 females) and a L-type (2 males and 2 females).
Results: Only one of the four lemurs challenged with H-type BSE died without clinical signs after 19 months post inoculation (mpi), whereas all the 4 animals inoculated with L -type BSE died at 19 mpi (2 males) and 22 mpi (2 females). Three months before their sacrifice, they developed blindness, tremor, abnormal posture, incoordinated movements, balance loss. Symptoms got worse according to the disease progression, until severe ataxia. The brain tissue were biochemically and immunocytochemically investigated for PrPres. For the H-type, spongiform changes without PrPres accumulation were observed in the brainstem. However Western blot analysis did not allow to detect PrPres into the brain. For the L-type, severe spongiosis was evidenced into the thalamus, the striatum, the mesencephalon, and the brainstem. whereas into the cortex the spongiosis was evidenced, but the Vacuolisation was weaker. Strong deposits of PrPres were detected by western blot, PET-blot and immunocytochemistry in the CNS: dense accumulation was observed into the thalamus, the striatum, and the hippocampus whereas in the cerebral cortex, PrPres was prominently accumulated in plaques. Western blot analysis also readily confirmed the presence of protease-resistant prion protein.
Conclusions: L-type infected lemurs showed survival times considerably shorter than for classical BSE strain, indicating that the disease is caused by a very virulent distinct prion strain in a model of non human primate.
http://www.neuroprion.org/resources/pdf_docs/conferences/prion2008/abstract-book-prion2008.pdf
P7.09
Biochemical screening for identification of atypical bse in belgium, 1999-present
Authors
Alexandre DobIy: Caroline Rodeghiero, Riet Geeroms; Stephanie Durand, Jessica De Sloovere, Emanuel Yanopdenbosch, Stefan Roels,
Content
Background: Recently atypical forms of BSE have been described. Western blot analyses showed that, in comparison to the classic BSE (C-type), they are demonstrable by a higher or lower molecular weight of the unglycosylated PrPres. They Viere thus named H-type and L-type BSE (L-type is also called BASE). In addition they show a lower proportion of diglycosylated PrPres than C-type. These emerging types represent different strains of BSE. They show unique incubation periods and histological lesions. Such types have been described on different continents. Indeed they might correspond to "sporadic" forms of BSE. In 2004 we already described one L-type in Belgium.
Objective: We retrospectively analysed the bovines at least 7-year-old in the Belgian archive of BSE diagnosed cattle in order to determine the prevalence of the two types of atypical BSE in Belgium.
Methods: We analysed homogenates from 39 bovines of 93 months old in median (min: 84, max: 181 months). The most recent one was diagnosed in 2006. We used Western blot with a panel of anti-PrP antibodies (Ab). They detect different regions of the PrP protein, from N-terminal to C-terminal: 12B2, 9A2, Sha31. SAFB4, 94B4. Their combination is aimed at an efficient typing diagnostic. We detected bound Ab with SuperSignal West Dura (Pierce) and analysed PrPres, signals with an image-analysis software (Quantity One, Bio-Rad).
Results: The results are still under analysis. We will detail the most crucial characteristics for typing PrPres. These include 1) the apparent molecular mass of the an-, mono- and diglycosylated bands, 2) the binding affinity to the five Ab (e.g.12B2 for H-type), 3) the presence of a fourth (unglycosylated) band and 4) the glycoprofile based on the relative proportions of the visible bands.
Discussion: The emergence of atypical types of BSE is partially due to a better knowledge of prion strains and more efficient diagnostic techniques. As the area in the brain where the PrPres is deposited can differ drastically between the types, it is essential to ascertain that the sampling techniques and analyses are adapted to these new types. As these new strains seem more virulent than classic types, they represent one of the next challenges in the field of prions.
http://www.neuroprion.org/resources/pdf_docs/conferences/prion2008/abstract-book-prion2008.pdf
http://www.prion2008.com/
Tuesday, November 11, 2008
Transmission of atypical bovine prions to mice transgenic for human prion protein
DOI: 10.3201/eid1412.080941
http://bse-atypical.blogspot.com/2008/11/transmission-of-atypical-bovine-prions.html
Wednesday, August 20, 2008
Bovine Spongiform Encephalopathy Mad Cow Disease typical and atypical strains, was there a cover-up ?
http://bse-atypical.blogspot.com/2008/08/bovine-spongiform-encephalopathy-mad.html
Tuesday, June 3, 2008 SCRAPIE USA UPDATE JUNE 2008 NOR-98 REPORTED PA
http://nor-98.blogspot.com/2008/06/scrapie-usa-update-june-2008-nor-98.html
SCRAPIE USA
http://scrapie-usa.blogspot.com/
Sunday, September 07, 2008
CWD LIVE TEST, and the political aspects or fallout of live testing for BSE in cattle in the USA
http://chronic-wasting-disease.blogspot.com/2008/09/cwd-live-test-and-political-aspects-or.html
Saturday, October 18, 2008 WYOMING STAR VALLEY MOOSE TESTS POSITIVE FOR CWD
http://chronic-wasting-disease.blogspot.com/2008/10/wyoming-star-valley-moose-tests.html
http://chronic-wasting-disease.blogspot.com/
Saturday, December 01, 2007 Phenotypic Similarity of Transmissible Mink Encephalopathy in Cattle and L-type Bovine Spongiform Encephalopathy in a Mouse Model Volume 13, Number 12-December 2007 Research
snip...see full text ;
http://transmissible-mink-encephalopathy.blogspot.com/2007/12/phenotypic-similarity-of-transmissible.html
A New Prionopathy OR more of the same old BSe and sporadic CJD
http://creutzfeldt-jakob-disease.blogspot.com/2008/08/new-prionopathy-or-more-of-same-old-bse.html
Sunday, April 20, 2008 Progress Report from the National Prion Disease Pathology Surveillance Center April 3, 2008
Atypical forms of BSE have emerged which, although rare, appear to be more virulent than the classical BSE that causes vCJD.
see full text ;
http://prionunitusaupdate2008.blogspot.com/2008/04/progress-report-from-national-prion.html
ONE HUNDRED AND FIRST MEETING OF THE SPONGIFORM ENCEPHALOPATHY ADVISORY COMMITTEE Oct 23, 2008 at 9:00 AM
http://seac992007.blogspot.com/2008/10/one-hundred-and-first-meeting-of_23.html
http://flounder068.vox.com/library/post/one-hundred-and-first-meeting-of-the-spongiform-encephalopathy-advisory-committee.html
Friday, November 21, 2008
Plasma & Serum Proteins Receive Continued FDA Approval
http://madcowfeed.blogspot.com/2008/11/plasma-serum-proteins-receive-continued.html
http://madcowfeed.blogspot.com/
Sunday, November 23, 2008 PRION October 8th - 10th 2008 Book of Abstracts
http://bse-atypical.blogspot.com/2008/11/prion-october-8th-10th-2008-book-of.html
Terry S. Singeltary Sr., P.O. Box 42, Bacliff, Texas USA 77518
posted by Terry S. Singeltary Sr. at
6:16 PM
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