Veterinary Biologics Guideline 3.32E: Guideline for minimising the risk of introducing transmissible spongiform encephalopathy prions and other infectious agents through veterinary biologics
I. Introduction
II. Legal Authority
III. Required Information
A. MAO Statement in the Outline of Production
B. Special Outline on MAO
C. Declaration of Compliance
D. MAO used in the production of master seed and cell stocks
IV. Controls at the Manufacturing Facility
V. Considerations for in vitro veterinary biologics
Appendix I
I. Introduction
The production of veterinary biologics (VB) involves the use of many materials of animal origin (MAO). These MAO present a possible risk of iatrogenic transmission of transmissible spongiform encephalopathy (TSE) prions and other disease agents to animals.
Manufacturers of VB are expected to understand the risks associated with each MAO they use. When selecting a new MAO, consideration should be given to its animal sources, testing performed to verify freedom from contamination, treatments applied to reduce the risk of contamination by viable disease agents, and the end use of the VB products containing the MAO. Manufacturers should define a quality standard for each MAO based on these attributes/parameters, and verify that each incoming lot of the MAO meets the quality standard. As an example, a quality standard for fetal bovine serum could include the criteria: must come from countries A or B; must be tested for X, Y and Z; and must be irradiated at ## kGy before acceptance for use in production.
The purpose of this guideline is to describe the information that must be provided to the Canadian Centre for Veterinary Biologics (CCVB) about the MAO used in the production of veterinary biologics licensed in Canada. This includes products manufactured in Canada for domestic use and/or for export, as well as products manufactured elsewhere which are imported into/ licensed for use in Canada. The requirements are being updated. Manufacturers will have until December 31, 2021 to comply with this version of Guideline 3.32.
Previously the CCVB has required manufacturers to identify the suppliers of each MAO and provide documentation from each supplier about the MAO. With this revision, emphasis is being shifted to the manufacturer describing its quality standard for each MAO. This will allow companies the freedom to source the MAO from another supplier, provided the quality standard continues to be upheld. Submission of Certificates of Analysis and Origin to the CCVB will no longer be required (unless specifically requested by the reviewer).
II. Legal Authority
The Health of Animals Regulations:
Section 120.3 (1) Subject to subsection (2), no person shall release a veterinary biologic unless the person
(a) submits an application for a permit for the proposed release to the Minister, accompanied by sufficient information, including the information referred to in section 120.4, to enable the Minister to determine whether the proposed release is
(i) unlikely to result in the introduction into Canada or the spread within Canada of any vector, disease or toxic substance, and
(ii) unlikely to pose a risk of harm to the environment or to human or animal health; and
(b) is issued a permit for the proposed release under section 160.
Section 120.4 (1) The accompanying information that is required to be provided by a person to the Minister pursuant to paragraph 120.3(1)(a) includes the following:
Section 120.4 (1)(g) the proposed measures to mitigate any risk of harm to the environment or to human or animal health; and
Section 120.4 (1)(h) any other information in respect of the veterinary biologic that is relevant to identifying any risk of harm to the environment or to human or animal health.
Section 122. (1) Subject to subsection (2), every applicant for a permit to import a veterinary biologic into Canada shall include with his application
Section 122. (1)(h) any information the Minister may require in order to determine, in the course of assessing the safety of the veterinary biologic, whether the introduction of the veterinary biologic into the environment could result in the spread within Canada of a vector, disease or toxic substance that would have a harmful effect on human or animal health.
Section 126. Subject to section 127, every applicant for a product licence shall include with his application the material and information referred to in subsection 122(1).
Section 130. No person shall sell a veterinary biologic or any diluent to be used therewith if the veterinary biologic or diluent has been prepared, manufactured, preserved, packed, labelled or tested otherwise than in the manner described in the product outline.
III. Required Information The information and documents described below must be provided to the CCVB for all veterinary biologics licensed in Canada, including products manufactured in Canada for domestic use and/or for export, as well as products manufactured elsewhere which are imported into/ licensed for use in Canada.
III. A. MAO Statement in Outline of Production Section II of each product's Outline of Production (OP) must include a general statement about the MAO used. Below is an example of suitable text.
Materials of animal origin used in the preparation of this product are sourced from countries categorized as negligible or controlled risk for bovine spongiform encephalopathy. Measures are in place to minimize the risk of the materials of animal origin contaminating the final product with an infectious animal disease agent. Refer to Special Outline No. space for specific information.
Manufacturers should consult the CCVB about the suitability of alternative text. In general the OP statements required by the USDA-Center for Veterinary Biologics (CVB) are acceptable.
III. B. Special Outline on MAO Manufacturers must prepare a Special Outline (SO) to describe the key attributes of each of their MAO. The SO should cover all MAO used during production, including the production of any working seed and working cell stocks (refer to section III.D. below about master seeds and master cell stocks).
The MAO SO does not have to follow the formatting convention described in Veterinary Biologics Guideline 3.7: Guideline for Preparation of Production Outlines, Special Outlines, and Summary of Changes for Veterinary Biologics. Instead the MAO SO should be prepared as an Excel spreadsheet, workbook or equivalent, and submitted to the CCVB in an electronic, searchable format. The SO need only consist of a table, or series of tables, with manufacturer identification and document version information.
The table below illustrates the minimum required MAO information, which is: material, species of origin, tissue type, country of origin, risk mitigating treatments, testing, and target animal species. It is not mandatory to follow the format of the example below precisely.
Example of an MAO SO Special Outline No. space : Materials of animal origin used during production
[Manufacturer name]
Date: space
[Establishment Licence No.]
Supersedes: space
Table 1: Material of Animal Origin
Material Species Table Note 1 Tissue type Table Note 2 Country of origin of source animals Table Note 3 Risk mitigating treatments Table Note 4 Testing Table Note 5 Target animal species Table Note 6
Fetal bovine serum Bovine Blood Mexico Irradiated at ≥25kGy; 0.2µm filtered cytopathic effect, hemagglutinin activation, bovine viral diarrhea virus, reovirus, rabies virus, bluetongue virus, bovine respiratory syncytial virus, bovine adenovirus, bovine parvovirus Avian, Porcine Bovine
Porcine trypsin Porcine Pancreas USA, Canada pH <2 0.2="" a="" activation="" at="" avian="" bovine="" canine="" cytopathic="" div="" during="" effect="" feline="" filtered="" for="" hemagglutinin="" hrs="" irradiated="" kgy="" m="" parvovirus="" porcine="" processing="" seneca="" sterility="" virus="">
="">
Porcine trypsin Porcine Pancreas Australia, NZ pH <2 0.2="" a="" activation="" at="" avian="" bovine="" canine="" cytopathic="" div="" during="" effect="" feline="" filtered="" for="" hemagglutinin="" hrs="" irradiated="" kgy="" m="" parvovirus="" porcine="" processing="" seneca="" sterility="" virus="">
I almost forgot about this, way back, super ovulation and bse tse prion;
https://bovineprp.blogspot.com/2019/03/medical-devices-containing-materials.html
Cooked meat medium Bovine Skeletal Muscle USA, Canada Only used in media autoclaved at ≥121°C for ≥20 min None Bovine PPLO Broth Bovine Heart, Pancreas, Skin, Stomach Canada Used exclusively in media for bacterial cultures subsequently inactivated with formaldehyde None Bovine
LB Agar Bovine Milk Australia, NZ Heating at ≥100°C for 30 sec during processing None Porcine
LB Agar Porcine Pancreas Canada, USA Heating at ≥100°C for 30 sec during processing None Porcine
Table Notes
Table Note 1
The species column should preferably facilitate filtering based on the species, to allow for easy identification of MAO potentially affected by a changing disease situation in a given country. As such, rows may need to be duplicated to link an MAO to each species from which it originates.
Return to table note 1 referrerTable Note 2
Ensure that it is evident which tissue type goes with which species. When ruminant tissues are used, preference should be given to using MAO prepared exclusively from tissue types recognised as being of low or no risk of containing TSE agents. The use of Specified Risk Material (SRM) at any stage in the production of veterinary biologics is unacceptable.
Return to table note 2 referrerTable Note 3
Bovine MAO used in the production of veterinary biologics should be derived from animals originating from countries recognized as having a controlled or negligible risk of BSE as categorized by the World Organisation for Animal Health (OIE). The status of a country with regards to other significant animal diseases must also be evaluated before considering the country as acceptable as a source of MAO for veterinary biologics. In addition to evaluating the risks associated with the countries of origin of the source animals, manufacturers should consider the risks associated with the country in which an MAO is processed.
Return to table note 3 referrerTable Note 4
Identify any treatments that reduce the risk of the MAO contaminating the final product with an infectious disease agent. Such treatments may occur during the manufacturing of the MAO (e.g., prolonged processing at low pH), on the final MAO itself (e.g., irradiation, filtration, heat treatments), or on the media or solutions prepared from the MAO (e.g., highlight if an MAO is only used in media which are steam sterilized before use). Also highlight if the MAO is used exclusively in the production of antigens which undergo a subsequent inactivation treatment of the type likely to also inactivate contaminating bacterial or viral pathogens.
Return to table note 4 referrerTable Note 5
Identify the testing performed on each lot of the MAO to verify freedom from contamination. Include both testing by the MAO supplier and any testing done upon receipt.
Return to table note 5 referrerTable Note 6
Provide the target species in which the final product will be used. Risks associated with MAO sourced from the same species as the target species are higher than those associated with MAO sourced from other species. This is because the infectious agents potentially contaminating the MAO are more likely to be of the type capable of infecting the target species.
Note: Although manufacturers are not required to list in the MAO table each veterinary biologic product in which a particular MAO is used, manufacturers must be able to accurately and rapidly identify all products in which a particular MAO is used, and provide this information to the CCVB upon request.
Return to table note 6 referrer
Manufacturers are no longer required to identify the supplier of each MAO nor submit supplier certificates as supporting data. That said, in certain cases, the CCVB may ask for supporting documentation on a particular MAO, such as a TSE certificate of suitability issued by the European Directorate for the Quality of Medicine (EDQM), a supplier's TSE policy statement, a Certificate of Analysis or a Certificate of Origin.
Manufacturers must verify that each incoming lot of an MAO meets the parameters defined in the MAO SO table filed with the CCVB. They should also be continuously re-evaluating the risks associated with each MAO in light of changing disease situations in source countries.
i) Procedure for filing the MAO SO with the CCVB.
The information contained in the MAO SO must be maintained up-to-date by manufacturers. Canadian manufacturers must update their MAO SO with the CCVB prior to use of an MAO that does not match one of the parameter sets identified in their MAO SO table (see note below about grace period for adding MAO for newly licensed products). Foreign manufacturers must conduct an annual review of the MAO SO to verify that the information remains accurate, and submit any necessary updates to the MAO SO at that time. If no updates are required, manufactures should notify the CCVB of this by letter or email.
Note
New product licensing applications must include a list of all MAO used in the production of the product and an indication as to whether the MAO are already included in the company's filed MAO SO. For any new MAO not already in the MAO SO, all the information required for the MAO SO table must be provided in the licensing application. It is not a requirement to update the MAO SO prior to submitting a new product licensing application. The MAO SO can instead be updated upon the licensing of a new product or at the next annual review (i.e., no longer than one year after licensing).
As previously mentioned, the MAO SO should be prepared as an Excel spreadsheet, workbook or equivalent, and submitted to the CCVB in an electronic, searchable format.
A separate worksheet tab (or equivalent) in the file should serve as the identification page and include the following information:
Special Outline number
Special Outline title
Manufacturer name
Manufacturer Establishment Licence #
Manufacturer address
Version date of the Special Outline, or another means of version identification
Date submitted to CCVB
2 fields for use by the CCVB: "Filed by CCVB on: space" and "CCVB Reviewer: space". (See example below)
All fields of this page should be completed by the manufacturer at the time of submission to the CCVB, with the exception of the "Filed by CCVB on" and "CCVB Reviewer" fields. These last two fields will be completed by the CCVB at the time of review and filing of the MAO SO. After filing, the CCVB will return a stamped copy of this identification page alone to notify companies of the filing of the identified version of the MAO SO.
Example of identification page
Special Outline #1: Materials of Animal Origin
Version: January 1, 2019
Veterinary Vaccine Company Inc.
VB Estab. Lic. No. 101
Ottawa, Ontario A1B 2C3
Submitted to CCVB: January 15, 2019
Filed by CCVB on: space
CCVB Reviewer: space
III. C. Declaration of Compliance
A Declaration of Compliance (See Appendix I) is required for each product confirming that the manufacturer has examined all the MAO used in the preparation of the product and has concluded that the MAO used present a negligible risk of transmitting an infectious disease to target animals via the final product. A Declaration of Compliance must be included in the licensing application for a new product. The CCVB may additionally ask companies to update their Declarations of Compliance from time to time. The Declaration of Compliance must be signed by a designated officer of the manufacturer.
III. D. MAO used in the production of master seeds and cell stocks
In addition to the MAO used during the production of a product, manufacturers and the CCVB must evaluate the risks associated with all MAO used to prepare the seeds and cells stocks serving as starting material for product manufacturing. Consequently, new product licensing applications must include information (details on source, identification methods, genetic sequencing if applicable, preparation, media, extraneous agents testing, etc.) on all master seeds and master cell stocks. This information does not need to be included in the MAO SO, but does need to be kept on file with the manufacturer and at the CCVB as part of each product file. Should the manufacturer wish to create and submit a Master Seed/ Master Cell reference table similar to the one described in Table 1 above, the CCVB would accept the submission, but it is not a requirement at this time.
Note
Master seed and master cells established prior to 1986 – If some of the required MAO information is unavailable for master seeds and master cells established prior to the first recognized case of BSE in the United Kingdom in November 1986, the manufacturer must assess the risk and evaluate the significance of the missing information in relation to the potential risk of introducing TSE infection. Factors such as country of origin, species and tissue of origin, and target species for the final product should be considered when conducting the risk assessment.
IV. Controls at the manufacturing facility
Manufacturers must implement suitable quality assurance programs and material traceability systems for the MAO used on-site. Each incoming lot of an MAO should be qualified before use. Manufacturers should establish a quality standard for each MAO (consistent with the information provided in the MAO SO) and document that incoming lots were checked to ensure the quality standard was met. Certificates of Analysis and related supplier documentation must be retained. Batch production records must allow one to identify which lots of each MAO were used in the manufacturing of the batch. If bovine serum, for instance, of a different quality standard is stored on-site for the Quality Control (QC) department, there must be a system in place to ensure this inventory of bovine serum cannot accidentally be used in veterinary biologic manufacturing. These quality assurance programs and material traceability systems will be evaluated during facility inspections.
V. Considerations for in vitro veterinary biologics
In vitro veterinary biologics, such as diagnostic test kits, are naturally much lower risk products, as a function of their end use. Nonetheless, manufacturers of in vitro products must still complete the MAO requirements identified in this guideline, including the MAO SO table. In the risk mitigating treatments column, highlight that use is in an in vitro diagnostic product.
Appendix I
Below is sample text for a Declaration of Compliance. The Declaration of Compliance must be printed on company letterhead and signed by a designated officer (e.g., head of regulatory affairs or quality assurance) of the manufacturer.
Declaration of Compliance Name of the manufacturer: space
Assigned name of the product: space
Trade name of the product: space
Target species: space
CCVB product file number (if applicable): space
USDA product code (if applicable): space
This is to confirm that the above veterinary biologic has been prepared and tested in accordance with the Outline of Production, and associated Outlines or Special Outlines filed with the Canadian Centre for Veterinary Biologics (CCVB) of the Canadian Food Inspection Agency. We have examined all the materials of animal origin (MAO) used in the preparation of this product for their animal sources, including species, tissue type and country of origin, as well as for their pathogen inactivating treatments and purity testing requirements. The above product does not contain any Specified Risk Material and all bovine MAO originate from countries categorized as controlled or negligible risk for bovine spongiform encephalopathy. Furthermore, our assessment has concluded that the MAO used in the preparation of the above product present a negligible risk of transmitting an infectious disease to target animals via the final product. The CCVB will be notified should any of the statements in this declaration fail to remain true in the future.
Name: space Signature: space
Title: space Date: space
Specified Risk Material
Specified Risk Material means the skull, brain, trigeminal ganglia, eyes, tonsils, spinal cord and dorsal root ganglia of cattle aged 30 months or older, and the distal ileum of cattle of all ages, but does not include material from a country of origin, or a part of a country of origin, that is designated under section 7 of the Health of Animals Regulations as posing a negligible risk for Bovine Spongiform Encephalopathy.
I almost forgot about this, way back, super ovulation and bse tse prion;
MONDAY, FEBRUARY 25, 2019
MAD DOGS AND ENGLISHMEN BSE, SCRAPIE, CWD, CJD, TSE PRION A REVIEW 2019
PITUITARY EXTRACT
This was used to help cows super ovulate. This tissue was considered to be of greatest risk of containing BSE and consequently transmitting the disease...
(It was noted with concern that hormone extracts could be manufactured by a veterinary surgeon for administration to animals under his care without any Medicines Act Control.)
PITUITARY EXTRACT
This was used to help cows super ovulate. This tissue was considered to be of greatest risk of containing BSE and consequently transmitting the disease.
BEEF BRAIN AND BRAIN INFUSION BROTHS
Considered to be of great risk.
COMMERCIAL IN CONFIDENCE
MEDICINES ACT - VETERINARY PRODUCTS COMMITTEE
5 BLANK PAGES. ...TSS
7. Any Other Business
snip...see full text ;
***>HUNTERS, CWD TSE PRION, THIS SHOULD A WAKE UP CALL TO ALL OF YOU GUTTING AND BONING OUT YOUR KILL IN THE FIELD, AND YOUR TOOLS YOU USE<***
* 1: J Neurol Neurosurg Psychiatry 1994 Jun;57(6):757-8
Transmission of Creutzfeldt-Jakob disease to a chimpanzee by electrodes contaminated during neurosurgery.
Gibbs CJ Jr, Asher DM, Kobrine A, Amyx HL, Sulima MP, Gajdusek DC.
Laboratory of Central Nervous System Studies, National Institute of
Neurological Disorders and Stroke, National Institutes of Health,
Bethesda, MD 20892.
Stereotactic multicontact electrodes used to probe the cerebral cortex of a middle aged woman with progressive dementia were previously implicated in the accidental transmission of Creutzfeldt-Jakob disease (CJD) to two younger patients. The diagnoses of CJD have been confirmed for all three cases. More than two years after their last use in humans, after three cleanings and repeated sterilisation in ethanol and formaldehyde vapour, the electrodes were implanted in the cortex of a chimpanzee. Eighteen months later the animal became ill with CJD. This finding serves to re-emphasise the potential danger posed by reuse of instruments contaminated with the agents of spongiform encephalopathies, even after scrupulous attempts to clean them.
PMID: 8006664 [PubMed - indexed for MEDLINE]
Wednesday, September 11, 2019
Is the re-use of sterilized implant abutments safe enough? (Implant abutment safety) iatrogenic TSE Prion
SATURDAY, MARCH 16, 2019
Medical Devices Containing Materials Derived from Animal Sources (Except for In Vitro Diagnostic Devices) Guidance for Industry and Food and Drug Administration Staff Document issued on March 15, 2019 Singeltary Submission
Greetings again FDA CDRH-Guidance et al,
i kindly wish to address this issue once again, and express how concerning, that after all these decades, with the risk factors so high, that we are still discussing this issue as ''Nonbinding Recommendations''. simply is mind boggling imo...
i wish to kindly submit the following for ;
Medical Devices Containing Materials Derived from Animal Sources (Except for In Vitro Diagnostic Devices) Guidance for Industry and Food and Drug Administration Staff Document issued on March 15, 2019
and the risk factors from TRANSMISSIBLE SPONGIFORM ENCEPHALOPATHY TSE PRION DISEASE, ALL OF THEM!
my submission will have old history and new peer review science and transmission studies. as follows;
U.S.A. 50 STATE BSE MAD COW CONFERENCE CALL Jan. 9, 2001 Subject: BSE--U.S. 50 STATE CONFERENCE CALL Jan. 9, 2001
Date: Tue, 9 Jan 2001 16:49:00 -0800
From: "Terry S. Singeltary Sr."
Reply-To: Bovine Spongiform Encephalopathy
######### Bovine Spongiform Encephalopathy #########
Greetings List Members,
I was lucky enough to sit in on this BSE conference call today and even managed to ask a question. that is when the trouble started.
I submitted a version of my notes to Sandra Blakeslee of the New York Times, whom seemed very upset, and rightly so.
"They tell me it is a closed meeting and they will release whatever information they deem fit. Rather infuriating."
and i would have been doing just fine, until i asked my question. i was surprised my time to ask a question so quick.
(understand, these are taken from my notes for now. the spelling of names and such could be off.)
[host Richard Barns] and now a question from Terry S. Singeltary of CJD Watch.
[TSS] yes, thank you, U.S. cattle, what kind of guarantee can you give for serum or tissue donor herds?
[no answer, you could hear in the back ground, mumbling and 'we can't. have him ask the question again.]
[host Richard] could you repeat the question?
[TSS] U.S. cattle, what kind of guarantee can you give for serum or tissue donor herds?
[not sure whom ask this] what group are you with?
[TSS] CJD Watch, my Mom died from hvCJD and we are tracking CJD world-wide.
[not sure who is speaking] could you please disconnect Mr. Singeltary
[TSS] you are not going to answer my question?
[not sure whom speaking] NO
from this point, i was still connected, got to listen and tape the whole conference. at one point someone came on, a woman, and ask again;
[unknown woman] what group are you with?
[TSS] CJD Watch and my Mom died from hvCJD we are trying to tract down CJD and other human TSE's world wide. i was invited to sit in on this from someone inside the USDA/APHIS and that is why i am here. do you intend on banning me from this conference now?
at this point the conference was turned back up, and i got to finish listening. They never answered or even addressed my one question, or even addressed the issue. BUT, i will try and give you a run-down for now, of the conference.
IF i were another Country, I would take heed to my notes, BUT PLEASE do not depend on them. ask for transcript from;
RBARNS@ORA.FDA.GOV 301-827-6906
he would be glad to give you one ;-)
Rockville Maryland, Richard Barns Host
BSE issues in the U.S., How they were labelling ruminant feed? Revising issues.
The conference opened up with the explaining of the U.K. BSE epidemic winding down with about 30 cases a week.
although new cases in other countries were now appearing.
Look at Germany whom said NO BSE and now have BSE.
BSE increasing across Europe.
Because of Temporary Ban on certain rendered product, heightened interest in U.S.
A recent statement in Washington Post, said the New Administration (old GW) has a list of issues. BSE is one of the issues.
BSE Risk is still low, minimal in U.S. with a greater interest in MBM not to enter U.S.
HOWEVER, if BSE were to enter the U.S. it would be economically disastrous to the render, feed, cattle, industries, and for human health.
(human health-they just threw that in cause i was listening. I will now jot down some figures in which they told you, 'no need to write them down'. just hope i have them correct. hmmm, maybe i hope i don't ???)
80% inspection of rendering
*Problem-Complete coverage of rendering HAS NOT occurred.
sizeable number of 1st time FAILED INITIAL INSPECTION, have not been reinspected (70% to 80%).
Compliance critical, Compliance poor in U.K. and other European Firms.
Gloria Dunason Major Assignment 1998 goal TOTAL compliance. This _did not_ occur. Mixed level of compliance, depending on firm.
Rendering FDA license and NON FDA license
system in place for home rendering & feed 76% in compliance 79% cross contamination 21% DID NOT have system 92% record keeping less than 60% total compliance
279 inspectors 185 handling prohibited materials
Renderer at top of pyramid, significant part of compliance. 84% compliance
failed to have caution statement render 72% compliance & cross contamination caution statement on feed, 'DO NOT FEED TO CATTLE'
56 FIRMS NEVER INSPECTED
1240 FDA license feed mills 846 inspected
"close to 400 feed mills have not been inspected"
80% compliance for feed.
10% don't have system.
NON-FDA licensed mills There is NO inventory on non licensed mills. approximately 6000 to 8000 Firms ??? 4,344 ever inspected. "FDA does not have a lot of experience with"
40% do NOT have caution statement 'DO NOT FEED'.
74% Commingling compliance
"This industry needs a lot of work and only half gotten to"
"700 Firms that were falitive, and need to be re-inspected, in addition to the 8,000 Firms."
Quote to do BSE inspection in 19 states by end of January or 30 days, and other states 60 days. to change feed status??? Contract check and ask questions and pass info.
At this time, we will take questions.
[I was about the third or fourth to ask question. then all B.S.eee broke loose, and i lost my train of thought for a few minutes. picked back up here]
someone asking about nutritional supplements and sourcing, did not get name. something about inspectors not knowing of BSE risk??? the conference person assuring that Steve Follum? and the TSE advisory Committee were handling that.
Some other Dr. Vet, whom were asking questions that did not know what to do???
[Dennis Wilson] California Food Agr. Imports, are they looking at imports?
[Conference person] they are looking at imports, FDA issued imports Bulletin.
[Linda Singeltary ??? this was a another phone in question, not related i don't think] Why do we have non-licensed facilities?
(conference person) other feed mills do not handle as potent drugs???
Dennis Blank, Ken Jackson licensed 400 non FDA 4400 inspected of a total of 6000 to 8000,
(they really don't know how many non licensed Firms in U.S. they guess 6000 to 8000??? TSS)
Linda Detwiler asking everyone (me) not to use emergency BSE number, unless last resort. (i thought of calling them today, and reporting the whole damn U.S. cattle herd ;-) 'not'
Warren-Maryland Dept. Agr. Prudent to re-inspect after 3 years. concerned of Firms that have changed owners.
THE END
TSS
############ http://mailhost.rz.uni-karlsruhe.de/warc/bse-l.html ############
FROM New York TIMES
Subject: Re: BSE 50 STATE CONFERENCE CALL thread from BSE List and FDA Posting of cut version...
Date: Thu, 11 Jan 2001 22:02:47 -0700
From: "Sandy Blakeslee"
To: "Terry S. Singeltary Sr." References: 1
Hi terry -- thanks for all your help. I know it made a difference with the FDA getting out that release.
----- Original Message -----
From: "Terry S. Singeltary Sr."
To: Sent: Thursday, January 11, 2001 2:06 PM
Subject: BSE 50 STATE CONFERENCE CALL thread from BSE List and FDA Posting of cut version...
hi sandy,
From the New York Times NYTimes.com, January 11, 2001
Many Makers of Feed Fail to Heed Rules on Mad Cow Disease By SANDRA BLAKESLEE
Large numbers of companies involved in manufacturing animal feed are not complying with regulations meant to prevent the emergence and spread of mad cow disease in the United States, the Food and Drug Administration said yesterday.
The widespread failure of companies to follow the regulations, adopted in August 1997, does not mean that the American food supply is unsafe, Dr. Stephen Sundlof, director of the Center for Veterinary Medicine at the F.D.A., said in an interview.
But much more needs to be done to ensure that mad cow disease does not arise in this country, Dr. Sundlof said.
The regulations state that feed manufacturers and companies that render slaughtered animals into useful products generally may not feed mammals to cud-chewing animals, or ruminants, which can carry mad cow disease.
All products that contain rendered cattle or sheep must have a label that says, "Do not feed to ruminants," Dr. Sundlof said. Manufacturers must also have a system to prevent ruminant products from being commingled with other rendered material like that from chicken, fish or pork. Finally, all companies must keep records of where their products originated and where they were sold.
Under the regulations, F.D.A. district offices and state veterinary offices were required to inspect all rendering plants and feed mills to make sure companies complied. But results issued yesterday demonstrate that more than three years later, different segments of the feed industry show varying levels of compliance.
Among 180 large companies that render cattle and another ruminant, sheep, nearly a quarter were not properly labeling their products and did not have a system to prevent commingling, the F.D.A. said. And among 347 F.D.A.-licensed feed mills that handle ruminant materials - these tend to be large operators that mix drugs into their products - 20 percent were not using labels with the required caution statement, and 25 percent did not have a system to prevent commingling.
Then there are some 6,000 to 8,000 feed mills so small they do not require F.D.A. licenses. They are nonetheless subject to the regulations, and of 1,593 small feed producers that handle ruminant material and have been inspected, 40 percent were not using approved labels and 25 percent had no system in place to prevent commingling.
On the other hand, fewer than 10 percent of companies, big and small, were failing to comply with the record-keeping regulations.
The American Feed Industry Association in Arlington, Va., did not return phone calls seeking comment.
Subject: USDA/APHIS response to BSE-L--U.S. 50 STATE CONFERENCE CALL Jan. 9, 2001
Date: Wed, 10 Jan 2001 14:04:21 -0500
From: "Gomez, Thomas M."
Reply-To: Bovine Spongiform Encephalopathy To: BSE-L@uni-karlsruhe.de
######### Bovine Spongiform Encephalopathy #########
USDA/APHIS would like to provide clarification on the following point from Mr. Singeltary's 9 Jan posting regarding the 50 state conference call.
[Linda Detwiler asking everyone (me) not to use emergency BSE number, unless last resort. (i thought of calling them today, and reporting the whole damn U.S. cattle herd ;-) 'not']
Dr. Detwiler was responding to an announcement made during the call to use the FDA emergency number if anyone wanted to report a cow with signs suspect for BSE. Mr. Singeltary is correct that Dr. Detwiler asked participants to use the FDA emergency number as a last resort to report cattle suspect for BSE. What Mr. Singeltary failed to do was provide the List with Dr. Detwiler's entire statement. Surveillance for BSE in the United States is a cooperative effort between states, producers, private veterinarians, veterinary hospitals and the USDA. The system has been in place for over 10 years. Each state has a system in place wherein cases are reported to either the State Veterinarian, the federal Veterinarian in Charge or through the veterinary diagnostic laboratory system. The states also have provisions with emergency numbers. Dr. Detwiler asked participants to use the systems currently in place to avoid the possibility of a BSE-suspect report falling through the cracks. Use of the FDA emergency number has not been established as a means to report diseased cattle of any nature.
############ http://mailhost.rz.uni-karlsruhe.de/warc/bse-l.html ############
Subject: Re: USDA/APHIS response to BSE-L--U.S. 50 STATE CONFERENCE CALL Jan.9, 2001
Date: Wed, 10 Jan 2001 13:44:49 -0800
From: "Terry S. Singeltary Sr."
Reply-To: Bovine Spongiform Encephalopathy
To: BSE-L@uni-karlsruhe.de References: 1
######### Bovine Spongiform Encephalopathy #########
Hello Mr. Thomas,
> What Mr. Singeltary failed to do was provide the List with Dr. Detwiler's entire statement.
would you and the USDA/APHIS be so kind as to supply this list with a full text version of the conference call and or post on your web-site? if so when, and thank you. if not, why not?
The system has been in place for over 10 years.
that seems to be a very long time for a system to be in place, and only test 10,700 cattle from some 1.5 BILLION head (including calf crop). Especially since French are testing some 20,000 weekly and the E.U. as a whole, are testing many many more than the U.S., with less cattle, same risk of BSE/TSEs.
Why does the U.S. insist on not doing massive testing with the tests which the E.U. are using? Why is this, please explain?
Please tell me why my question was not answered?
U.S. cattle, what kind of guarantee can you give for serum or tissue donor herds?
It was a very simple question, a very important question, one that pertained to the topic of BSE/feed, and asked in a very diplomatic way. why was it not answered?
If all these years, we have been hearing that pharmaceutical grade bovines were raised for pharmaceuticals vaccines etc. But yet the USA cannot comply with feed regulations of the ruminant feed ban, PLUS cannot even comply with the proper labelling of the feed, cross contamination etc. Then how in the world can you Guarantee the feed fed to pharmaceutical grade bovine, were actually non ruminant feed?
Before i was ask to be 'disconnected', i did hear someone in the background say 'we can't'-- have him ask the question again.
could you please be so kind, as to answer these questions?
thank you, Terry S. Singeltary Sr. Bacliff, Texas USA
P.S. if you will also notice, i did not post that emergency phone number and do not intend on passing it on to anyone. I was joking when i said i should call and report the whole damn U.S. Herd. So please pass that on to Dr. Detwiler, so she can rest easily.
BUT, they should be reported, some are infected with TSE. The U.S. is just acting as stupid as Germany and other Countries that insist they are free of BSE.
TSS
Subject: Report on the assessment of the Georgraphical BSE-risk of the USA July 2000 (not good)
Date: Wed, 17 Jan 2001 21:23:51 -0800
From: "Terry S. Singeltary Sr."
Reply-To: Bovine Spongiform Encephalopathy To: BSE-L@uni-karlsruhe.de
######### Bovine Spongiform Encephalopathy #########
Greetings List Members and ALL EU Countries,
Because of this report, and the recent findings of the 50-state BSE Conference call, I respectfully seriously suggest that these Countries and the SSC re-evaluate the U.S.A. G.B.R. to a risk factor of #3.
I attempted to post this to list in full text, but would not accept...
thank you, kind regards, Terry S. Singeltary Sr., Bacliff, Texas USA
Report on the assessment of the Geographical BSE-risk of the USA July 2000
PART II
REPORT ON THE ASSESSMENT OF THE GEOGRAPHICAL BSE RISK OF THE UNITED STATES OF AMERICA
- 29 -
Report on the assessment of the Geographical BSE-risk of the USA July 2000
EXECUTIVE SUMMARY
snip...see full text;
U.S.A. 50 STATE BSE MAD COW CONFERENCE CALL Jan. 9, 2001
Subject: BSE--U.S. 50 STATE CONFERENCE CALL Jan. 9, 2001
Date: Tue, 9 Jan 2001 16:49:00 -0800
From: "Terry S. Singeltary Sr."
Reply-To: Bovine Spongiform Encephalopathy
######### Bovine Spongiform Encephalopathy #########
40,000 human heart valves a year from BSE herds
Sun, 3 Sep 2000. Unpublished Inquiry documents obtained by CJD activist Terry S. Singeltary Sr. of Bacliff, Texas
Opinion (webmaster): Below are some shocking documents. Here is a British company preparing 40,000 heart valves a year from bovine pericardium, primarily for export, and they are not required to source this material from BSE-free herds even in peak epidemic years. It is amazing to watch health "authorities" grovelling on their bellies to wring petty concessions from middle management at obscure little companies. The main worry is not the practise of using 800 potentially infected cows a week for human heart transplant material but that the press or recipients will get wind of it, hurting business.
BSE wasn't the problem, it was awkward queries from importing countries like the US. The cows are stunned using brain penetration -- can't do anything about the chunks of bovine brain blasted into the circulatory system, it's the norm. Can't use younger lower-risk animals either, patch would not be big enough. It is fascinating to see the British government worrying about, but doing nothing, with pigs with BSE 10 years ago.
While scrapie was long used as an excuse for continuing with human use of BSE-tainted material, little sheep material was used medically. Bovine transplants, vaccines, insulin doeses, etc. are far more dangerous than dietary material as injections, and are done on a very wide scale. So scrapie was never a valid analogy to BSE, as MAFF knew full well.
The British government deferred to the manufacturer's rep for an opinion on how contaminated pericardium might be, just as this appeared showing that this tissue is extremely dangerous:
CJD in a patient who received homograft [was it really?] tissue for tympanic membrane closure.
Eur Arch Otorhinolaryngol 1990;247(4):199-201
Tange RA, Troost D, Limburg M
We report the case history of a 54-year-old man who developed a fatal neurological disorder 4 years after a successful tympanoplasty with homograft pericardium...
COMMERCIAL IN CONFIDENCE
Miss M Duncan From: Dr E Hoxey Date: 29 January 1990 cc: Mr R Burton Dr N Richardson Ms K Turner Ms J Dhell Mr N Weatherhead
BOVINE SPONGIFORM ENCEPHALOPATHY
1. In your absence on sick leave, I chaired the STD BSE group meeting on 26th January 1990.
2. The minutes of the meeting will be circulated shortly but I was asked to bring to your attention the concerns of the group regarding the BMS heart valve.
3. This concern arose from a number of points on the agenda:-
i) the______________decision to source all raw material for sutures from Australasia from January 1990.
ii) the major cleandown and decontamination proposed for the factory and the possibility of press interest that this may generate.
iii) the indication in the Tyrell Report on Research that the infective agent may be induced to cross the species barrier by intracerebral, intraperitoneal or intravenous injection.
4. As you are aware, the____________situation has been a model which we have observed closely.
5. Reviewing the BMS situatien, we considered the incidence of BSE in the herds used for materials, the processing received by the material and the age of the cattle used. Given the number of uncertainties and lack of definitive information on BSE, the_______________model was still considered as a good one. The group were uncomfortable with the position of BMS as the only company using UK sourced material.
6. The group considered that it may be worthwhile arranging a further meeting with___________to confidentially make them aware that they would now be the only company using UK sourced bovine material for products of this type.
7. Clearly, __________and__________ are now in an exposed position in this area and all the implications need te be considered. Could we have your news on this proposal please?
Dr E V Hoxey PD STD PG1A 716 RSQ Ext 3356
90/01.29/19.1 ==============
B.S.E. GUIDELINES ON BOVINE IMPLANTS & BLOOD CONTACT DEVICES - MEETING WITH MANUFACTURERS
DATE: 8 DECEMBER 1989
DH REPRESENTATIVES Nigel Richardson Will Burton Eammon Hoxey Jeremy Tinkler Helen Campbell
Carol Bleakley
Bill Waine
The main purpose of the meeeting is to discuss the companies current manufacturing procedures, future plans and their compliance with the BSE guidelines. Their views were also sought as to the practical feasibility of the guidelines with respect to the manufacturing process, and any improvements that could be suggested.
The meetings were held separately with each company. Neither had received any queries concerning BSE from countries to which their products are exported.
CURRENT POSITION
1.__________ have brought in a microbiologist as a technical scientific adviser, initially to inform them of the current understanding of BSE. He is still available to them and keeps them up to date with new developments.
2. At present they produce bovine pericardial heart valves, & (a sister company) produces heparin coated products (from a porcine source). In the future it is possible that they will introduce a bovine patch produced from bovine pericardium from the same source. They will keep the Department informed of any progress in this area.
SOURCE MATERIAL
3. The source material for the manufacture of heart valves is bovine pericardial sacs. The cows used are 18-24 months old when slaughtered, the majority around 18 months. BMS have no knowledge of the actual age.
4. The cows are killed using brain penetration. Dr Bleakley made the point that as far as she was aware this was the only method used in this country. Meat inspectors are paid to obtain the bovine pericardium. They are paid a set rate but bonuses are given for increased yields. Mr Burton expressed concern as to the conflict of interests that may arise as a result of this. Dr Bleakley did not believe that this was the case because of the relationship BMS had developed with the inspectors.
89/12.12/8.1 ============ COMMENTS ON THE GUIDELINES
14. Dr. Bleakley believed that the pericardium would not allow the replication of the causative agent, and does not present a risk.
15. She suggested that the guidelines were impossible to implement from the point of view of the manufacturing process for the following reasons:-
-It is not possible to use closed herds simply because of the numbers of cattle involved. This is up to 800 each week.
-Calves under 6 months old cannot be used as the pericardium is too thin to be incorporated into a valve.
-For cows this in the age group used brain penetration is the only method of slaughtering used in this country.
PROPOSALS PUT FORWARD BY DR BLEAKLEY
16. The goverment should fund research in this area. For example, investigating the presence or absence of the infectious agent in other parts of the body, such as the pericardium. Also to look at how the slaughtering process affects the spread of the disease.
17. Ideally the answer would be to take random tissue samples in order to detect contaminated material. This is not currently feasible with the length of time required to conduct titre testing.
COMMENTS ON THE REVIEW ON METHODS OF STERILIZATION FOR BSE
18. Everything present reflected the published material, but the validity of some of this is questionable. It was pointed out that:-
-it was stated that different strains display different heat sensitivity, but this does not appear to be chemically related
-the claim to be "effective' would depend on the type of material that was being used and the time involved.
CURRENT POSITION
19.____________ manufacture porcine valves and bovine pericardial patches. The possibility of producing porcine conduits is currently being investigated. This has not yet progressed.
20. The material is obtained from 2 abattoires in this country:-
-Dorchester, where veal calves under 18 weeks are slaughtered for sourcing pericardium for ________________. These are used to produce small patches of less than 90mm diameter, this may be divided into 4 quadrants. This represents 80-90% of sales.
-Fairham where cows between 5 and 10 years old are slaughtered to produce larger patches and strips of 100mm by 45mm.
89/12.12/8.2 =============
32. As a result of the concern voiced of direct inoculation of BSE via sectioning instruments it was stated that it would be feasible to use new blades with each carcass.
COMMENTS ON THE GUIDELINES
33. Dr Waine was not convinced of the need for sterile sectioning equipment and separate packaging from the abattoire. He felt that this would merely have a cosmetic effect.
34. He suggested that the possibility of bovine-human cross-infection was very remote.
35. He did not believe that it was possible for manufacturers to follow the guidelines as they stand.
PROPOSALS
36. Dr Waine felt that the steps taken by the Government had been realistic to control the outbreak.
REVIEW
37. Dr Waine did not believe that any sterilization treatment proposed would retain the surgical usage of the pericardium.
VALVES
38. The response has been that this problem is restricted to the U.K. Thier material is obtained from the same Italian source as the patches. There is no age specification on the cows but the preference is for the larger valves which would therefore come from the older animals.
PORCINE VALVES
39. There was a small discussion as to whether these products do fall under the issued guidelines. The assumption had been made by the company that they are not included as pigs are not known to be susceptible to infection by a Scrapie-like agent. This was confirmed by Dr Hoxey.
40. The pigs are electrocuted and the heart and pericardium obtained prior to inspection.
41. One abattoire supplies them with most of their porcine requirments.
H Campbell PG2C Room 312 RSQ Ext. 3212 12 December 1989
89/12.12/8.3 ============
TIP740203/3 0241
Bovine Spongiform Meeting Held On Friday 26th January 1990
Present Dr E Hoxey {chairman) Mr W Burton Dr N Richardson Mrs J Dhell Ms K Turner MS H Cambell Mr N Weatherhead (secretary)
copies: Miss Duncan
1.Apologies
Apologies were received from Miss Duncan
2.Minutes of the last meeting.
The previous minutes were accepted.
3.Matters arising not on the agenda.
As agreed at the previous meeting the paper on "Inactivation of Scrapie-like Agents" was sent with a Covering letter drafted by Dr Hoxey to all companies that use Bovine or Porcine materiais.
4.Report on the STD meeting with ___________________
The minutes of the meeting were discussed by the committee it was noted that:-
a} _____________ now meet DH Guidelines as the devices produced from the calf material comply as that they are obtained from animals less than 6 months old.The company had written to confirm that they now source older animals from overseas.
b) _____________ are unable to meet the DH Guidelines. and will not be doing so in the foreseeable future. The panel showed concern over the stance that BMS are taking. The committee felt that it was important to arrange a further meeting to inform them that they are now the only company using UK sourced material. [see minutes of the meeting dated 8/12/89 attached). Dr Hoxey agreed to write separatey to Miss Duncan on this issue.
action: Dr Hoxey
5. Report on the CSM/MCA BSE working party meeting 10/1/90
Mr Burton had produced a note of the above meeting as the minutes had as yet not been distributed. The committee noted that:-
90/01.26/20.1 =============
TIP740203/3 0242
1) _______________ has exceeded all expectations tn complying with DH Guidelines. They will be sourcing all raw material from Australasia from January 1990.
2) _______________ are using an international expert _______________ to advise them on factory decontamination at the change over of source.
3) The use of Dr Taylor and the factory decontamination may qenerate press interest.
4) The offal ban has not yet been expanded to include Scotland.
5) The CSM/MCA BSE working group agrees with the approach that STD are taking to Tissue Harvesting and wished to be kept updated.
The note of the meeting is attached for reference.
6. STD Database updating
Mr Burton drafted a minute for signature by Mr Worroll.The object of the minute was to enable STD to keep a check on companies that use animal material in their products.
The control manual committee amended the minute and agreed that the audit report procedure should include (if it does not already) a statement to the effect that the company information section should include details of raw materials used.
The CMC suggested a sentence to the effect "Team leaders visiting Blue Guide companies should additionally take account of Mr Worroll's minute of Jan 1990." The committee agreed with this sentence and passed it back for inclusion in the Base-line Documents.
action N Weatherhead
7. Review of the 'Interim Report of the Consultative Committee on Research into BSE" (Tyrell committee report.)
Mrs Dhell presented a summarized Version of the above document to the committee. It was noted that only the research studies catorqorised high/medium priority would all somehow receive funding. The committee expressed a wish to find out:-
1) Areas which have not been prioritised which have relevance to STDS area of interest.
2) Has any party taken up the study "Investigation into the fate of bovine and ovine tissues and product that could lead to infection by as yet unrecognised routes."
90/01.26/20.2 ==============
TIP740203/3 0243
3. The protocol of work being carried out by the Clinical Research Laboratory in Harrow add proposed by the Neuropathogenesis unit in Edinburgh:
a) Have they any plans to include pericardium. If not could PD suggest that they miqht include it.
b) What controls are they using.
c) Will it be possible to arrange a visit.
4) It was suggested that Dr Pickles be contacted as the DH representitive on the Tyrell committee, to enquire if comments on this document were being sought by the committee, as PD has a number of points it wishes to raise.
8. Incorporation of Guidance into Chemical Methods for the sterilization of animal tissue Used in medical Devices.
The draft paper on methods of validation in chemical sterilization was shown to the BGRP for comments, these were later received. A copy was also forwarded to MCA and despite numerous reminders no reply had as yet been received.
The committee recommended that the paper on "Chemical Methods for the Sterilization of Animal Tissue Used in Medical Devices" should be amended include Tissue Harvesting. The BGRP will be informed of this and a copy of tbe document will be presented to the next CMS/MCA BSE working group which is to be held on 4th July l99O.
Mrs Dhell to arrange a meeting to draft this ammendment.
Mrs Turner action:Hr Tinkler Mrs Dhell Dr Hoxey
9. Possibility of sending STD paper 'Inactivation of Scrapie-like Agents" to Dr Taylor and Dr Kimberlin for their comments.
The committee felt that the paper should be sent to Dr Taylor and Dr Klmberlin and that they should be invited to comment. If they subsequently required payment for this work the committee felt that the Department should finance it if necessary.
Mrs Dhell will draft a letter to accompany the report for Miss Duncan to sign.
action: Mrs Dhell
90/01.26/20.3 ==============
TIP740203/3 0244
10. - presentation on current situation
Miss Duncan's report was passed over until the next meeting.
1l. Oral discussion on relevant media interest and media reports.
The discussion mainly revolved around _____________ and the exposed position PD would be in if the media became involved. The possible press coverage expected in relation to events at ___________ could also raise the profile of BSE in "medical" products.
Mr Burton to obtain copies of any defensive briefings drafted by MCA in responce to the ______________ situation.
N Weatherhead
90/01.26/20.4
WEDNESDAY, OCTOBER 31, 2018
PIG HEART VALVES and Potential Iatrogenic Transmissible Spongiform Encephalopathy TSE Prion Disease in Humans, what if?
THURSDAY, JANUARY 23, 2014
Medical Devices Containing Materials Derived from Animal Sources (Except for In Vitro Diagnostic Devices) [Docket No. FDA–2013–D–1574]
Terry S. Singeltary Sr. Submission [Docket No. FDA–2013–D–1574]
Medical Devices Containing Materials Derived from Animal Sources (Except for In Vitro Diagnostic Devices)
Draft Guidance for Industry and Food and Drug Administration Staff DRAFT GUIDANCE This guidance document is being distributed for comment purposes only. Document issued on January 23, 2014.
O17 Evaluation of iatrogenic risk of CJD transmission associated with corneal transplantation
Douet JY. (1), Cassard H. (1), Huor A. (1), Lacroux C. (1), Haïk S. (2), Lugan S. (1), Tillier C. (1), Aron N. (1), Ironside J.W. (3), Andreoletti O. (1)
(1) UMR INRA-ENVT 1225, Ecole Nationale Vétérinaire de Toulouse, France.(2) Université Pierre et Marie Curie, UMR-S 1127, CNRS UMR 722, Institut du Cerveau et de la Moelle Epinière, G.H. PitiéSalpêtrière, Paris, France.(3) National CJD Research and Surveillance Unit Centre for Clinical Brain Sciences, University of Edinburgh, UK.
Sporadic Creutzfeldt–Jakob disease (sCJD) has been documented to be accidentally transmitted by contaminated corneal transplants. To date, only one case is considered as definite, while 5 other suspect cases are classified as probable or possible. However, the specific transmission risk associated with this widely-performed transplantation procedure has never been studied.
In this study, bioassays in transgenic mice expressing the human PrP confirmed the presence of infectivity in the cornea of 2 sCJD patients. Infectivity was also detected in other ocular tissues (optic nerve, retina, vitreous body, choroid and lacrymal gland) from one of these patients.
Based on these results, we investigated the presence of infectivity in the cornea of different TSE animal models. In conventional mice (RML strain) as well as in sheep (PG127 scrapie), infectivity could only be detected in the corneas collected at the late stage of the disease incubation phase.
In parallel to these experiments, corneas collected at different stages of the incubation period in infected mice and sheep were grafted into healthy recipients.
Our results showed that corneas collected during the late asymptomatic phase or in affected animals were able to transmit TSE infectivity. Importantly, after the death of the recipients (up to 2.5 years after surgery) infectivity could still be detected in the grafted cornea.
These data confirm the potential for sCJD transmission by corneal grafts. They also provide crucial data for the assessing the TSE transmission risk associated with various other ophthalmologic procedures.
PRION2018CONFERENCE ABSTRACT
JUST OUT CDC;
Tuesday, November 20, 2018
Eyes of CJD patients show evidence of prions Finding could help early diagnosis, raise concern for eye exams and transplants.
Singeltary 1999
***> THE EYES HAVE IT, CJD, AND THEY COULD BE STEALING THEM FROM YOUR LOVED ONE!...year 1999
i said that 20 years ago about this very thing. but did anyone listen...no!
prepare for the storm...terry
year 1999 to 2000
Subject: RE-The Eyes Have It (cjd) and they could be stealing them from your loved one... "pay back time"
Date: Sat, 16 Sep 2000 10:04:26 -0700
From: "Terry S. Singeltary Sr."
Reply-To: Bovine Spongiform Encephalopathy
######### Bovine Spongiform Encephalopathy #########
Greetings List Members,
I hate to keep kicking a madcow, but this still is very disturbing to me. Not only for the recipient of the cornea's, but as well, for the people whom would be operated on, using the same tools that were used to put those stolen cornea's in the recipient with. No history of this donor or his family (re-ffi), or anything would be known, using stolen organs and or tissue's. I just think this is not only wrong, but very dangerous to a great many other people, as this is one of the most infectious tissues of TSE's. It seems that this practice of stealing organ/tissue happens more than we think. Anyway, the family of the victim which had their cornea's stolen, are now suing. In the example I used with my Mother, if 3 months before, she would have been in a catastrophic accident (car wreck, whatever), no autopsy (for whatever reason), no family (for whatever reason), she lay in the morgue, and after 4 hours, they come steal the cornea's, lot of people could have been infected, just because of lack of medical history of donor/family. It may be hypothetical, but very real. We need to stop the spread of this disease.
kind regards, Terry S. Singeltary Sr., Bacliff, Texas USA
===========================================
Previous story--
Cadaver corneal transplants -- without family permission...
Cadaver corneal transplants -- without family permission Houston, Texas channel 11 news 28 Nov 99
Reported by Terry S. Singeltary Sr.son of CJD victim
"It was a story about how the Lions eye bank were harvesting corneas from victims in the Morgue, without their consent. Under Texas law, this appears to be legal (remember Texas has the Veggie liable law). Even if Family says no, this appears to happen, from what the news story said.
They said the only way to prevent this, is to fill out a form, stating not to have this done. So if you don't fill out the form, they can do this. How many people don't know about the form?
This is not only disgusting and appalling, it could be highly infectious. Without proper background checking of the donors, on their physical history, checking on past dementia, and/or family history, some of these unfortunate victims, could be passing a human TSE.
Response Jill Spitler Clevelland Eye Bank:
"No, we are not stealing.........Yes, you do have such a law in the state of Texas, but not all your state Eye Banks utilize the law. The Eye Bank that you're speaking of is only one of 43 certified Eye Bank throughout the USA.
And there are measure taken per the Medical Standards of the Eye Bank Association of America, the certifying body for eye banks and per FDA regulations to address those concerns that you speak of.
I would suggest that those interested/concern with transplant contact their local agencies. The Eye Bank Association of America has a web. site . Further if anyone has problems contacting or finding out about their local organization(s), call me or e-mail me I would be glad to help. My e-mail address is jill@clevelandeyebank.org"
Terry Singeltary responds:
"Explain this to the family in Houston who went to their loved ones funeral, only to find out that the loved one that was in the casket, had their corneas removed without their permission, without the consent of the victim or it's family. They would not have known it, only for the funny look the victim had. So, they questioned, only to find out, the corneas, had in fact, been removed without consent.
I call that stealing, regardless what the law states. This type of legal grave robbing is not a logical thing to do without knowing any type of background of the victims medical past, which really will not prove anything due to the incubation period. Eye tissue being potentially a highly infective source, there are risks here.
Should they not at least know of the potential ramifications of TSE's (the person receiving the corneas)?
Should there not be some sort of screening?
Should there be some sort of moral issue here?
If this is the case, and in fact, they can come take your corneas, without your consent, then what will they start taking next, without your consent?
Lets look at a hypothetical situation:
What would happen if my Mom (DOD 12-14-97 hvCJD) would have gotten into a car wreck and died, before the symptoms of CJD appeared. Not much money, so there was no autopsy. What would have happened to that recipient of those infecting corneas?"
Comment (webmaster): Actual transmission of CJD by means of corneal transplant may or may not be rare. The incidence of infectivity in older people could be fairly high; this is not to be confused with the lower incidence of symptomatic (clinical) CJD. It is very unlikely that familial CJD would have been diagnosed in earlier generations; however, without interviewing the family even known kindreds would not be excluded.
In blood donation, a much stricter policy is followed, even though corneal transplant may be far more dangerous (being a direct link to the brain and not going through purification steps).
Since highly sensitive tests for pre-clinical CJD are now available, it would make sense to screen corneas for CJD, just as they are screened for AIDS, hepatitus, and a host of other conditions.
Eye procedure raises CJD concerns
BySTEVE MITCHELL, Medical Correspondent
WASHINGTON, Nov. 18 (UPI) -- A New York man who died from a rare brain disorder similar to mad cow disease in May underwent an eye procedure prior to his death that raises concerns about the possibility of transmitting the fatal disease to others, United Press International has learned.
The development comes on the heels of the announcement Thursday by U.S. Department of Agriculture officials of a possible second case of mad cow disease in U.S. herds.
Richard Da Silva, 58, of Orange County, N.Y., died from Creutzfeldt Jakob disease, an incurable brain-wasting illness that strikes about one person per million.
Richard's wife Ann Marie Da Silva told UPI he underwent a check for the eye disease glaucoma in 2003, approximately a year before his death. The procedure involves the use of a tonometer, which contacts the cornea -- an eye tissue that can contain prions, the infectious agent thought to cause CJD.
Ann Marie's concern is that others who had the tonometer used on them could have gotten infected.
A 2003 study by British researchers suggests her concerns may be justified. A team led by J.W. Ironside from the National Creutzfeldt-Jakob Disease Surveillance Unit at the University of Edinburgh examined tonometer heads and found they can retain cornea tissue that could infect other people -- even after cleaning and decontaminating the instrument.
"Retained corneal epithelial cells, following the standard decontamination routine of tonometer prisms, may represent potential prion infectivity," the researchers wrote in the British Journal of Ophthalmology last year. "Once the infectious agent is on the cornea, it could theoretically infect the brain."
Prions, misfolded proteins thought to be the cause of mad cow, CJD and similar diseases, are notoriously difficult to destroy and are capable of withstanding most sterilization procedures.
Laura Manuelidis, an expert on these diseases and section chief of surgery in the neuropathology department at Yale University, agreed with the British researchers that tonometers represent a potential risk of passing CJD to other people.
Manuelidis told UPI she has been voicing her concern about the risks of corneas since 1977 when her own study, published in the New England Journal of Medicine, showed the eye tissue, if infected, could transmit CJD.
At the time the procedure was done on Richard Da Silva, about a year before he died, she said it was "absolutely" possible he was infectious.
The CJD Incidents Panel, a body of experts set up by the U.K. Department of Health, noted in a 2001 report that procedures involving the cornea are considered medium risk for transmitting CJD. The first two patients who have a contaminated eye instrument used on them have the highest risk of contracting the disease, the panel said.
In 1999, the U.K. Department of Health banned opticians from reusing equipment that came in contact with patients' eyes out of concern it could result in the transmission of variant CJD, the form of the disease humans can contract from consuming infected beef products.
Richard Da Silva was associated with a cluster of five other cases of CJD in southern New York that raised concerns about vCJD.
None of the cases have been determined to stem from mad cow disease, but concerns about the cattle illness in the United States could increase in light of the USDA announcement Thursday that a cow tested positive on initial tests for the disease. If confirmed, this would be the second U.S. case of the illness; the first was detected in a Washington cow last December. The USDA said the suspect animal disclosed Thursday did not enter the food chain. The USDA did not release further details about the cow, but said results from further lab tests to confirm the initial tests were expected within seven days.
Ann Marie Da Silva said she informed the New York Health Department and later the eye doctor who performed the procedure about her husband's illness and her concerns about the risk of transmitting CJD via the tonometer.
The optometrist -- whom she declined to name because she did not want to jeopardize his career -- "didn't even know what this disease was," she said.
"He said the health department never called him and I called them (the health department) back and they didn't seem concerned about it," she added. "I just kept getting angrier and angrier when I felt I was being dismissed."
She said the state health department "seems to have an attitude of don't ask, don't tell" about CJD.
"There's a stigma attached to it," she said. "Is it because they're so afraid the public will panic? I don't know, but I don't think that the answer is to push things under the rug."
New York State Department of Health spokeswoman Claire Pospisil told UPI she would look into whether the agency was concerned about the possibility of transmitting CJD via tonometers, but she had not called back prior to story publication.
Disposable tonometers are readily available and could avoid the risk of transmitting the disease, Ironside and colleagues noted in their study. Ann Marie Da Silva said she asked the optometrist whether he used disposable tonometers and "he said 'No, it's a reusable one.'"
Ironside's team also noted other ophthalmic instruments come into contact with the cornea and could represent a source of infection as they are either difficult to decontaminate or cannot withstand the harsh procedures necessary to inactivate prions. These include corneal burrs, diagnostic and therapeutic contact lenses and other coated lenses.
Terry Singletary, whose mother died from a type of CJD called Heidenhain Variant, told UPI health officials were not doing enough to prevent people from being infected by contaminated medical equipment.
"They've got to start taking this disease seriously and they simply aren't doing it," said Singletary, who is a member of CJD Watch and CJD Voice -- advocacy groups for CJD patients and their families.
U.S. Centers for Disease Control and Prevention spokeswoman Christine Pearson did not return a phone call from UPI seeking comment. The agency's Web site states the eye is one of three tissues, along with the brain and spinal cord, that are considered to have "high infectivity."
The Web site said more than 250 people worldwide have contracted CJD through contaminated surgical instruments and tissue transplants. This includes as many as four who were infected by corneal grafts. The agency noted no such cases have been reported since 1976, when sterilization procedures were instituted in healthcare facilities.
Ironside and colleagues noted in their study, however, many disinfection procedures used on optical instruments, such as tonometers, fail. They wrote their finding of cornea tissue on tonometers indicates that "no current cleaning and disinfection strategy is fully effective."
Singletary said CDC's assertion that no CJD cases from infected equipment or tissues have been detected since 1976 is misleading.
"They have absolutely no idea" whether any cases have occurred in this manner, he said, because CJD cases often aren't investigated and the agency has not required physicians nationwide report all cases of CJD.
"There's no national surveillance unit for CJD in the United States; people are dying who aren't autopsied, the CDC has no way of knowing" whether people have been infected via infected equipment or tissues, he said.
Ann Marie Da Silva said she has contacted several members of her state's congressional delegation about her concerns, including Rep. Sue Kelly, R-N.Y., and Sen. Charles Schumer, D-N.Y.
"Basically, what I want is to be a positive force in this, but I also want more of a dialogue going on with the public and the health department," she said.
Friday, December 04, 2009
New guidance on decontamination of trial contact lenses and other contact devices has been revealed for CJD AND vCJD
SUNDAY, JANUARY 17, 2016
Of Grave Concern Heidenhain Variant Creutzfeldt Jakob Disease
TUESDAY, NOVEMBER 20, 2018
CDC Eyes of CJD patients show evidence of prions concerns for iatrogenic transmission
SATURDAY, MARCH 16, 2019
Friday, December 04, 2009
*** New guidance on decontamination of trial contact lenses and other contact devices has been revealed for CJD AND vCJD
Thursday, January 29, 2009
***Medical Procedures and Risk for Sporadic Creutzfeldt-Jakob Disease, Japan, 1999–2008 (WARNING TO Neurosurgeons and Ophthalmologists)
Wednesday, August 20, 2008 ***Tonometer disinfection practice in the United Kingdom: A national survey
FDA Singeltary submission 2001
Greetings again Dr. Freas and Committee Members,
I wish to submit the following information to the Scientific Advisors and Consultants Staff 2001 Advisory Committee (short version). I understand the reason of having to shorten my submission, but only hope that you add it to a copy of the long version, for members to take and read at their pleasure, (if cost is problem, bill me, address below). So when they realize some time in the near future of the 'real' risks i speak of from human/animal TSEs and blood/surgical products. I cannot explain the 'real' risk of this in 5 or 10 minutes at some meeting, or on 2 or 3 pages, but will attempt here:
snip...see full text ;
Subject: Prion Scientific Advisors and Consultants Staff Meeting Singeltary Submission Freas Monday, January 08,2001 3:03 PM
PLEASE be aware, my submission here has now been removed from the www, or changed to a different url that no one knows now, and does not come up in search engines anymore, after 17 years...wonder why that could be, i guess the truth just hurt to much$$$
Freas, William
From: Terry S. Singeltary Sr. [flounder@wt.net]
Sent: Monday, January 08,2001 3:03 PM
Subject: CJD/BSE (aka madcow) Human/Animal TSE’s--U.S.--Submission To Scientific Advisors and Consultants Staff January 2001 Meeting (short version)
CJD/BSE (aka madcow) Human/Animal TSE’s--U.S.--Submission To Scientific Advisors and Consultants Staff January 2001 Meeting (short version)
Greetings again Dr. Freas and Committee Members,
I wish to submit the following information to the Scientific Advisors and Consultants Staff 2001 Advisory Committee (short version).
I understand the reason of having to shorten my submission, but only hope that you add it to a copy of the long version, for members to take and read at their pleasure, (if cost is problem, bill me, address below). So when they realize some time in the near future of the 'real' risks i speak of from human/animal TSEs and blood/surgical products. I cannot explain the 'real' risk of this in 5 or 10 minutes at some meeting, or on 2 or 3 pages, but will attempt here:
remember AIDS/HIV, 'no problem to heterosexuals in the U.S.? no need to go into that, you know of this blunder:
DO NOT make these same stupid mistakes again with human/animal TSE's aka MADCOW DISEASE. I lost my Mom to hvCJD, and my neighbor lost his Mother to sCJD as well (both cases confirmed). I have seen many deaths, from many diseases. I have never seen anything as CJD, I still see my Mom laying helpless, jerking tremendously, and screaming "God, what's wrong with me, why can't I stop this". I still see this, and will never forget. Approximately 10 weeks from 1st of symptoms to death. This is what drives me. I have learned more in 3 years about not only human/animal TSE's but the cattle/rendering/feeding industry/government than i ever wished to.
I think you are all aware of CJD vs vCJD, but i don't think you all know the facts of human/animal TSE's as a whole, they are all very very similar, and are all tied to the same thing, GREED and MAN.
I am beginning to think that the endless attempt to track down and ban, potential victims from known BSE Countries from giving blood will be futile. You would have to ban everyone on the Globe eventually? AS well, I think we MUST ACT SWIFTLY to find blood test for TSE's, whether it be blood test, urine test, .eyelid test, anything at whatever cost, we need a test FAST.
DO NOT let the incubation time period of these TSEs fool you.
To think of Scrapie as the prime agent to compare CJD, but yet overlook the Louping-ill vaccine event in 1930's of which 1000's of sheep where infected by scrapie from a vaccine made of scrapie infected sheep brains, would be foolish. I acquired this full text version of the event which was recorded in the Annual Congress of 1946 National Vet. Med. Ass. of Great Britain and Ireland. from the BVA and the URL is posted in my (long version).
U.S.A. should make all human/animal TSE's notifiable at all ages, with requirements for a thorough surveillance and post-mortem examinations free of charge, if you are serious about eradicating this horrible disease in man and animal.
There is histopathology reports describing o florid plaques" in CJD victims in the USA and some of these victims are getting younger. I have copies of such autopsies, there has to be more. PLUS, sub-clinical human TSE's will most definitely be a problem.
THEN think of vaccineCJD in children and the bovine tissues used in the manufacturing process, think of the FACT that this agent surviving 6OO*C. PNAS -- Brown et al. 97 (7): 3418 scrapie agent live at 600*C
Then think of the CONFIDENTIAL documents of what was known of human/animal TSE and vaccines in the mid to late 80s, it was all about depletion of stock, to hell with the kids, BUT yet they knew. To think of the recall and worry of TSE's from the polio vaccine, (one taken orally i think?), but yet neglect to act on the other potential TSE vaccines (inoculations, the most effective mode to transmit TSEs) of which thousands of doses were kept and used, to deplete stockpile, again would be foolish.
--Oral polio; up to 1988, foetal calf serum was used from UK and New Zealand (pooled); since 1988 foetal calf serum only from New Zealand. Large stocks are held.
--Rubella; bulk was made before 1979 from foetal calf serum from UK and New Zealand. None has been made as there are some 15 years stock.
--Diphtheria; UK bovine beef muscle and ox heart is used but since the end of 1988 this has been sourced from Eire. There are 1,250 litres of stock.
--Tetanus; this involves bovine material from the UK mainly Scottish. There are 21,000 litres of stock.
--Pertussis; uses bovine material from the UK. There are 63,000 litres of stock. --They consider that to switch to a non-UK source will take a minimum of 6-18 months and to switch to a non-bovine source will take a minimum of five years.
3. XXXXXXXXXXX have measles, mumps, MMR, rubella vaccines. These are sourced from the USA and the company believes that US material only is used.
89/2.14/2.1
============
BSE3/1 0251
4. XXXXXXXXXXX have a measles vaccine using bovine serum from the UK. there are 440,000 units of stock. They have also got MMR using bovine serum from the UK.
5. XXXXXXXXXXX have influenza, rubella, measles,' MMR vaccines likely to be used in children. Of those they think that only MMR contains bovine material which is probably a French origin.
6. XXXXXXXXXXX have diphtheria/tetanus and potasses on clinical trial. hese use veal material, some of which has come from the UK and has been ade by XXXXXXXXXXX (see above).
I have documents of imports from known BSE Countries, of ferments, whole blood, antiallergenic preparations,
2
human blood plasma, normal human blood sera, human immune blood sera, fetal bovine serum, and other blood fractions not elsewhere specified or included, imported glands, catgut, vaccines for both human/animal, as late as 1998. Let us not forget about PITUITARY EXTRACT. This was used to help COWS super ovulate. This tissue was considered to be of greatest risk of containing BSE and consequently transmitting the disease.
ANNEX 6
MEETING HELD ON 8 JUNE 1988 TO DISCUSS THE IMPLICATIONS OF BSE TO BIOLOGICAL PRODUCTS CONTAINING BOVINE - EXTRACTED MATERIAL
How much of this was used in the U.S.?
Please do not keep making the same mistakes; 'Absence of evidence is not evidence of absence'.
What are the U.S. rules for importing and manufacturing vaccines, medicines and medical devices?
Does the U.S.A. allow sourcing of raw material of ruminants from the U.S.A.?
U.S. cattle, what kind of guarantee can you give for serum or tissue donor herds? . The U.S. rendering system would easily amplify T.S.E.'s:
Have we increased the stability of the system (improved heat treatments) since the EU SSC report on the U.S.A. was published in july 2000?
What is done to avoid cross-contaminations in the U.S.A.?
How can the U.S. control absence of cross-contaminations of animal TSE's when pig and horse MBM and even deer and elk are allowed in ruminant feed, as well as bovine blood? I sadly think of the rendering and feeding policy before the Aug. 4, 1997 'partial' feed ban, where anything went, from the city police horse, to the circus elephant, i will not mention all the scrapie infected sheep. I am surprised that we have not included man 'aka soyent green'. It is a disgusting industry and nothing more than greed fuels it.
When will the U.S.. start real surveillance of the U.S. bovine population (not passive, this will not work)?
When will U.S. start removing SRMs?
Have they stopped the use of pneumatic stunners in the U.S.?
If so, will we stop it in all U.S. abattoirs or only in those abattoirs exporting to Europe?
If not, WHY NOT?
same questions for removal of SRM in the U.S.A., or just for export?
If not, WHY NOT?
How do we now sterilize surgical/dental instruments in the U.S.A.?
Where have we been sourcing surgical catgut?
(i have copies of imports to U.S., and it would floor you) hen will re-usable surgical instruments be banned?
'Unregulated "foods" such as 'nutritional supplements' containing various extracts from ruminants, whether imported or derived from
3
US cattle/sheep/cervids ("antler velvet" extracts!) should be forbidden or at least very seriously regulated. (neighbors Mom, whom also died from CJD, had been taking bovine based supplement, which contained brain, eye, and many other bovine/ovine tissues for years, 'IPLEX').
What is the use of banning blood or tissue donors from Germany, France, etc... when the U.S.A. continues exposing cattle, sheep and people to SRM, refuses to have a serious feed ban, refuses to do systematic BSE-surveillance?
The FDA should feel responsible for the safety of what people eat, prohibit the most dangerous foods, not only prohibit a few more donors - the FDA should be responsible for the safe sourcing of medical devices, not only rely on banning donors "from Europe", The 'real' risks are here in the U.S. as well, and nave been for some time.
We must not forget the studies that have proven infectivity in blood from TSE's.
The Lancet, November 9, 1985
Sir, --Professor Manuelidis and his colleagues (Oct 19, p896) report transmission to animals of Creutzfeldt-Jakob disease (CJD) from the buffy coat from two patients. We also transmitted the disease from, whole blood samples of a patient (and of mice) infected with CJD.l Brain, Cornea, and urine from this patient were also infectious, and the clinicopathological findings2 are summarised as follows.
snip...
Samples,were taken aseptically at necropsy. 10% crude homogenates of brain and cornea in saline, whole blood (after crushing a clot), and untreated CSF and urine were innoculated intracerebrally into CFl strain mice (20 ul per animal). Some mice showed emaciation, bradykinesia, rigidity of the body and tail, and sometimes tremor after long incubation periods. Tissues obtained after the animal died (or was killed) were studied histologically (table). Animals infected by various inocula showed common pathological changes, consisting of severe spongiform changes, glial proliferation, and a moderate loss of nerve cells. A few mice inoculated with brain tissue or urine had the same amyloid plaques found in patients and animals with CJD.3
snip...
Department of Neuropathology,. Neurological Institute, Faculty of Medicine, Kyushu University, Fukuoka812, Japan JUN TATEISHI
(full text-long version)
and
CWD and transmission to man will be no different than other TSE's.
"Clearly, it is premature to draw firm conclusions about CWD passing naturally into humans, cattle and sheep, but the present results suggest that CWD transmissions to humans would be as limited by PrP incompatibility as transmissions of BSE or sheep scrapie to humans. Although there is no evidence that sheep scrapie has affected humans, it is likely that BSE has
4
caused variant CJD in 74 people (definite and probable variant CJD cases to date according to the UK CJD Surveillance Unit). Given the presumably large number of people exposed to BSE infectivity, the susceptibility of humans may still be very low compared with cattle, which would be consistent with the relatively inefficient conversion of human PrP-sen by PrPBSE. Nonetheless, since humans have apparently been infected by BSE, it would seem prudent to take reasonable measures to limit exposure of humans (as well as sheep and cattle) to CWD infectivity as has been recommended for other animal TSEs,"
G.J. Raymond1, A. Bossers2, L.D. Raymond1, K.I. O'Rourke3, L.E. McHolland4, P.K. Bryant III4, M.W. Miller5, E.S. Williams6, M. Smits2 and B. Caughey1,7
or more recently transmission of BSE to sheep via whole blood Research letters Volume 356, Number 9234 16 September 2000
Transmission of BSE by blood transfusion in sheep
Lancet 2000; 356: 999 – 1000
F Houston, J D Foster, Angela Chong, N Hunter, C J Bostock
See Commentary
"We have shown that it is possible to transmit bovine spongiform encephalopathy (BSE) to a sheep by transfusion with whole blood taken from another sheep during the symptom-free phase of an experimental BSE infection. BSE and variant Creutzfeldt-Jakob disease (vCJD) in human beings are caused by the same infectious agent, and the sheep-BSE experimental model has a similar pathogenesis to that of human vCJD. Although UK blood transfusions are leucodepleted--a possible protective measure against any risk from blood transmission-- this report suggests that blood donated by symptom-free vCJD-infected human beings may represent a risk of spread of vCJD infection among the human population of the UK."
"The demonstration that the new variant of Creutzfeldt-Jakob disease (vCJD) is caused by the same agent that causes bovine spongiform encephalopathy (BSE) in cattle1 has raised concerns that blood from human beings in the symptom-free stages of vCJD could transmit infection to recipients of blood transfusions (full text long version)"
and...
"The large number of cases (1040), temporal clustering of the outbreaks (15 in the first 6 months of 1997), the high in-flock incidence, and the exceptional involvement of goats (390 cases), suggested an accidental infection. The source of the epidemic might have been TSE-contaminated meat and bonemeal, but eight flocks had never been fed any commercial feedstuff. Infection might have risen from the use of a formol-inactivated vaccine against contagious agalactia prepared by a single laboratory with brain and mammary gland homogenates of sheep infected with Mycoplasma agalactiae. Although clinical signs of TSE in the donor sheep have not been found, it is possible that one or more of them were harbouring the
5
infectious agent. Between 1995 and 1996, this vaccine was given subcutaneously to 15 of the affected flocks (to one flock in 1994) ; in these animals the disease appeared between 23 and 35 months after vaccination. No information is available for herd 13 because it was made up of stolen animals. Sheep from the remaining three flocks (1-3, figure) did not receive the vaccine, thus suggesting a naturally occurring disease.’’ (again, full text long version).
IN SHORT, please do under estimate this data and or human/animal TSE's including CWD in the U.S.A.
A few last words, please.
The cattle industry would love to have us turn our focus to CWD and forget about our own home grown TSE in Bovines. This would be easy to do. Marsh's work was from downer cattle feed, NOT downer deer/elk feed. This has been proven.
DO NOT MAKE THAT MISTAKE.
There should be NO LESS THAN 1,000,000 tests for BSE/TSE ' in 2001 for U.S.A. French are testing 20,000 a week. The tests are available. Why wait until we stumble across a case from passive surveillance, by then it is to late. IF we want the truth, this is a must???
United States Total ,Bovine Brain Submissions by State,
May 10 ,1990 thru October 31, 2000
Total 11,700
FROM 1.5 BILLION HEAD OF CATTLE since 1990 ???
with same feeding and rendering practices as that of U.K. for years and years, same scrapie infected sheep used in feed, for years and years, 950 scrapie infect FLOCKS in the U.S. and over 20 different strains of scrapie known to date. (hmmm, i am thinking why there is not a variant scrapie, that is totally different than all the rest)? just being sarcastic.
with only PARTIAL FEED BAN implemented on Aug. 4, 1997??? (you really need to reconsider that blood meal etc. 'TOTAL BAN')
AND PLEASE FOR GODS SAKE, STOP saying vCJD victims are the only ones tied to this environmental death sentence. "PROVE IT". It's just not true. The 'CHOSEN ONES' are not the only ones dying because of this man-made death sentence. When making regulations for human health from human/animal TSEs, you had better include ALL human TSE's, not just vCJD. Do NOT underestimate sporadic CJD with the 'prehistoric' testing available to date. This could be a deadly mistake. Remember, sCJD kills much faster from 1st onset of symptoms to death, and hvCJD is the fastest. Could it just be a higher titre of infectivity, or route or source, or all three?
Last, but not least. The illegal/legal harvesting of body parts and tissues will come back to haunt you. Maybe not morally, but due to NO background checks and human TSEs, again it will continue to spread.
Stupidity, Ignorance and Greed is what fuels this disease. You must stop all of this, and ACT AT ONCE...
Sent: Monday, January 08,2001 3:03 PM
FDA CJD BSE TSE Prion Scientific Advisors and Consultants Staff January 2001 Meeting Singeltary Submission
2001 FDA CJD TSE Prion Singeltary Submission
see search results for the original link;
another search here;
i wonder if the Government FDA et al, or whom ever removed my submission to fda from 2001 from the www after 17 years, where most every thing i said has come true, i wonder if the government wonders by removing my submission they will change the science and the truth?
reasons for Government FDA removal of Singeltary Submission materials to federal dockets;
see updated link;
-----Original Message-----
From: Terry S. Singeltary Sr. [mailto:flounder@wt.net] ;
Sent: Tuesday, February 18, 2003 12:45 PM
To: Freas, William Cc: Langford, Sheila
Subject: Re: re-vCJD/blood and meeting of Feb. 20, 2003
Greetings FDA, Variant Creutzfeldt-Jakob Disease Guidance Topic of Feb. 20 TSE Cmte. [Committee Meeting on February 20, 2003] FDA’s Transmissible Spongiform Encephalopathies Advisory Committee will meet Feb. 20 to hear updates on the implementation of the agency’s variant Creutzfeldt-Jakob Disease guidance and its effect on blood supply.
FULL SUBMISSION ;
Docket Management Docket: 02D-0073 - Guidance: Validation of Procedures for Processing of Human Tissues Intended for Transplantation Comment Number: EC -4 Accepted - Volume 1 2003-01-16 16:33:04
Docket: 02D-0073 - Guidance: Validation of Procedures for Processing of Human Tissues Intended for Transplantation
Greetings,
please be advised;
with the new findings from Collinge et al; that BSE transmission to the 129-methionine genotype can lead to an alternate phenotype which is indistinguishable from type 2 PrPSc, the commonest sporadic CJD, i only ponder how many of the sporadic CJDs in the USA are tied to this alternate phenotype? these new findings are very serious, and should have a major impact on the way sporadic CJDs are now treated as opposed to the vCJD that was thought to be the only TSE tied to ingesting beef, in the medical/surgical arena. these new findings should have a major impact on the way sporadic CJD is ignored, and should now be moved to the forefront of research as with vCJD/nvCJD.
SNIP...FULL TEXT ;
Subject: [Docket No. FSIS-2006-0011] FSIS Harvard Risk Assessment of Bovine Spongiform Encephalopathy (BSE)
Singeltary submission ;
FSIS, USDA, REPLY TO SINGELTARY
Animal and Plant Health Inspection Service (APHIS) Proposed Rule: Bovine Spongiform Encephalopathy; Minimal-Risk Regions; Importation of Live Bovines and Products Derived From Bovines
THURSDAY, FEBRUARY 25, 2016
U.S. Food & Drug Administration (FDA) FDA/CFSAN Cosmetics Update: Cosmetics Program; Import and Domestic and Transmissible Spongiform Encephalopathy TSE Prion Disease Risk Factors
***WARNING TO ALL CONSUMERS AND COUNTRIES AROUND THE WORLD***
***Note: FDA labs do not conduct BSE analysis and thus no sampling guidance is issued for BSE. ***
FDA MAY STRENGTHEN BSE FEED REGULATIONS
T U E S D A Y , A P R I L 1 9 , 2 0 1 6
Docket No. FDA-2013-N-0764 for Animal Feed Regulatory Program Standards
Singeltary Comment Submission Docket No. FDA-2013-N-07 64 for “Animal Feed Regulatory Program Standards.”
Singeltary Comment,
Greetings FDA et al,
I would kindly like to comment on ;
Docket No. FDA-2013-N-07 64 for “Animal Feed Regulatory Program Standards.”
I implore that we close the mad cow feed loopholes with cervid, and we must enforce existing feed regulations against the BSETSEPrion. we have failed terribly in this.
2019 UPDATE TSE PRION USA
USDA APHIS CDC FDA BSE CWD TSE PRION UPDATE 2019
THURSDAY, MARCH 14, 2019
USDA APHIS CDC FDA BSE TSE PRION UPDATE 2019
THURSDAY, MARCH 14, 2019
USDA APHIS CDC Cervids: Chronic Wasting Disease Specifics Updated 2019
FRIDAY, MARCH 15, 2019
Saskatchewan Chronic Wasting Disease TSE Prion 349 Cases Positive for 2018
SATURDAY, MARCH 16, 2019
Chronic Wasting Disease CWD TSE Prion United States of America Update March 16, 2019
FRIDAY, MARCH 15, 2019
USDA APHIS SCRAPIE TSE PRION Sheep and Goat Health Update 2019
snip...see full text submission;
SATURDAY, MARCH 16, 2019
Medical Devices Containing Materials Derived from Animal Sources (Except for In Vitro Diagnostic Devices) Guidance for Industry and Food and Drug Administration Staff Document issued on March 15, 2019 Singeltary Submission
FRIDAY, SEPTEMBER 06, 2019
Disinfection of Multi-Use Ocular Equipment for Ophthalmological Procedures: A Review of Clinical Effectiveness, Cost-Effectiveness, and Guidelines
SATURDAY, SEPTEMBER 21, 2019
***> National Variability in Prion Disease–Related Safety Policies for Neurologic Procedures <***
SUNDAY, SEPTEMBER 1, 2019
FDA Reports on VFD Compliance
Before and after the current Veterinary Feed Directive (VFD) rules took full effect in January, 2017, the FDA focused primarily on education and outreach to help feed mills, veterinarians and producers understand and comply with the requirements. Since then, FDA has gradually increased the number of VFD inspections and initiated enforcement actions when necessary.
TUESDAY, MARCH 26, 2019
Joint Statement from President Donald J. Trump USA and President Jair Bolsonaro Brazil FOREIGN POLICY BSE TSE Prion aka mad cow disease
SATURDAY, JUNE 01, 2019
Brazil reports another cases of mad cow disease atypical BSE TSE Prion
PLEASE BE ADVISED THERE IS NO SCIENTIFIC PROOF THAT ANY ATYPICAL BSE TSE PRION IS OF A SPONTANEOUS OLD AGE DISEASE, NOT CAUSED BY FEED, THIS IS FALSE AND UNPROVEN, IN FACT, ATYPICAL BSE OF THE L AND H TYPE ARE TRANSMISSIBLE BY ORAL ROUTE. THIS STATEMENT THAT ATYPICAL BSE IS A SPONTANEOUS EVENT CAUSED BY OLD AGE, CAUSED BY NOTHING, IS ABSOLUTELY A LIE, AND THE GOVERNMENT OF BRAZIL, AND OTHER GOVERNMENTS THAT PRODUCE SUCH STATEMENTS, KNOWS THIS IS AN UNPROVEN STATEMENT...TERRY SINGELTARY SR.
Tuesday, September 10, 2019
FSIS [Docket No. FSIS–2019–0021] Notice of Request To Renew an Approved Information Collection: Specified Risk Materials Singeltary Submission
WEDNESDAY, JULY 31, 2019
The agent of transmissible mink encephalopathy passaged in sheep is similar to BSE-L
WEDNESDAY, SEPTEMBER 18, 2019
USDA Modernizes Swine Slaughter Inspection for the First Time in Over 50 Years and TSE Prion Risk Factors
THURSDAY, SEPTEMBER 26, 2019
USDA Scientific Integrity Policy Departmental Regulation 1074-001 Breached
THE FULL MONTY
***> MAD DOGS AND ENGLISHMEN BSE, SCRAPIE, CWD, CJD, TSE PRION A REVIEW 2019
BSE INQUIRY EVIDENCE
Why did the appearance of new TSEs in animals matter so much? It has always been known that TSEs will transfer across species boundaries. The reason for this was never known until the genetic nature of the prion gene was fully investigated and found to be involved. The gene is found to have well preserved sites and as such there is a similar gene throughout the animal kingdom...and indeed a similar gene is found in insects! It is NOT clear that the precise close nature of the PrP gene structure is essention for low species barriers. Indeed it is probably easier to infect cats with BSE than it is to infect sheep. As such it is not clear that simply because it is possible to infect BSE from cattle into certain monkeys then other apes will necessarily be infectable with the disease. One factor has stood out, however, and that is that BSE, when inoculated into mice would retain its apparent nature of disease strain, and hence when it was inoculated back into cattle, then the same disease was produced. Similarly if the TSE from kudu was inoculated into mice then a similar distribution of disease in the brain of the mouse is seen as if BSE had been inoculated into the mouse. This phenomenon was not true with scrapie, in which the transmission across a species barrier was known to lose many of the scrapie strain phenomena in terms of incubation period or disease histopathology. This also suggested that BSE was not derived from scrapie originally but we probably will never know.
------------------------------------------------------------------------
TSE in wild UK deer? The first case of BSE (as we now realise) was in a nyala in London zoo and the further zoo cases in ungulates were simply thought of as being interesting transmissions of scrapie initially. The big problem started to appear with animals in 1993-5 when it became clear that there was an increase in the CJD cases in people that had eaten deer although the statistics involved must have been questionable. The reason for this was that the CJD Surveillance was well funded to look into the diet of people dying of CJD. This effect is not clear with vCJD...if only because the numbers involved are much smaller and hence it is difficult to gain enough statistics. They found that many other foods did not appear to have much association at all but that deer certainly did and as years went by the association actually became clearer. The appearance of vCJD in 1996 made all this much more difficult in that it was suddenly clearer that the cases of sporadic CJD that they had been checking up until then probably had nothing to do with beef...and the study decreased. During the period there was an increasing worry that deer were involved with CJD..
see references:
DEER BRAIN SURVEY
i have not updated my blogspot url with all this data archived, but i will work on it...but until then, i have updated this on the above links with live urls to the actual BSE Inquiry documents...
Subject: Re: DEER SPONGIFORM ENCEPHALOPATHY SURVEY & HOUND STUDY
Date: Fri, 18 Oct 2002 23:12:22 +0100
From: Steve Dealler
Reply-To: Bovine Spongiform Encephalopathy Organization: Netscape Online member
To: BSE-L@ References: <3daf5023 .4080804="" a="" fg_scanned="1" href="http://wt.net/" nbsp="" rel="noopener noreferrer" shape="rect" style="color: blue; cursor: pointer;" target="_blank">wt.net
Dear Terry,
An excellent piece of review as this literature is desparately difficult to get back from Government sites.
What happened with the deer was that an association between deer meat eating and sporadic CJD was found in about 1993. The evidence was not great but did not disappear after several years of asking CJD cases what they had eaten. I think that the work into deer disease largely stopped because it was not helpful to the UK industry...and no specific cases were reported. Well, if you dont look adequately like they are in USA currenly then you wont find any!
Steve Dealler ===============
BSE Inquiry Steve Dealler
Management In Confidence
BSE: Private Submission of Bovine Brain Dealler
reports of sheep and calf carcasses dumped...
re-scrapie to cattle GAH Wells BSE Inquiry
https://web.archive.org/web/20090506043931/http://www.bseinquiry.gov.uk/files/yb/1993/12/09001001.pdf
https://web.archive.org/web/20090506065716/http://www.bseinquiry.gov.uk/files/yb/1995/06/21005001.pdf
Dr. Dealler goes rogue to confirm BSE
Confirmation BSE Dealler's mad cow
BSE vertical transmission
1993 cjd report finds relationship with eat venison and cjd increases 9 fold, let the cover up begin...tss
FINDINGS
*** The association between venison eating and risk of CJD shows similar pattern, with regular venison eating associated with a 9 FOLD INCREASE IN RISK OF CJD (p = 0.04). ***
*** The association between venison eating and risk of CJD shows similar pattern, with regular venison eating associated with a 9 FOLD INCREASE IN RISK OF CJD (p = 0.04). ***
*** The association between venison eating and risk of CJD shows similar pattern, with regular venison eating associated with a 9 FOLD INCREASE IN RISK OF CJD (p = 0.04). ***
There is some evidence that risk of CJD INCREASES WITH INCREASING FREQUENCY OF LAMB EATING (p = 0.02)..
The evidence for such an association between beef eating and CJD is weaker (p = 0.14). When only controls for whom a relative was interviewed are included, this evidence becomes a little STRONGER (p = 0.08).
snip...
It was found that when veal was included in the model with another exposure, the association between veal and CJD remained statistically significant (p = < 0.05 for all exposures), while the other exposures ceased to be statistically significant (p = > 0.05).
snip...
In conclusion, an analysis of dietary histories revealed statistical associations between various meats/animal products and INCREASED RISK OF CJD. When some account was taken of possible confounding, the association between VEAL EATING AND RISK OF CJD EMERGED AS THE STRONGEST OF THESE ASSOCIATIONS STATISTICALLY. ...
snip...
In the study in the USA, a range of foodstuffs were associated with an increased risk of CJD, including liver consumption which was associated with an apparent SIX-FOLD INCREASE IN THE RISK OF CJD. By comparing the data from 3 studies in relation to this particular dietary factor, the risk of liver consumption became non-significant with an odds ratio of 1.2 (PERSONAL COMMUNICATION, PROFESSOR A. HOFMAN. ERASMUS UNIVERSITY, ROTTERDAM). (???...TSS)
snip...see full report ;
GAME FARM INDUSTRY WANTS TO COVER UP FINDINGS OF INCREASE RISK TO CJD FROM CERVID
BSE INQUIRY
CJD9/10022
October 1994
Mr R.N. Elmhirst Chairman British Deer Farmers Association Holly Lodge Spencers Lane
BerksWell Coventry CV7 7BZ
Dear Mr Elmhirst,
CREUTZFELDT-JAKOB DISEASE (CJD) SURVEILLANCE UNIT REPORT
Thank you for your recent letter concerning the publication of the third annual report from the CJD Surveillance Unit. I am sorry that you are dissatisfied with the way in which this report was published.
The Surveillance Unit is a completely independant outside body and the Department of Health is committed to publishing their reports as soon as they become available. In the circumstances it is not the practice to circulate the report for comment since the findings of the report would not be amended.. In future we can ensure that the British Deer Farmers Association receives a copy of the report in advance of publication.
The Chief Medical Officer has undertaken to keep the public fully informed of the results of any research in respect of CJD. This report was entirely the work of the unit and was produced completely independantly of the the Department.
The statistical results reqarding the consumption of venison was put into perspective in the body of the report and was not mentioned at all in the press release. Media attention regarding this report was low key but gave a realistic presentation of the statistical findings of the Unit. This approach to publication was successful in that consumption of venison was highlighted only once by the media ie. in the News at one television proqramme.
I believe that a further statement about the report, or indeed statistical links between CJD and consumption of venison, would increase, and quite possibly give damaging credence, to the whole issue. From the low key media reports of which I am aware it seems unlikely that venison consumption will suffer adversely, if at all.
The BSE Inquiry / Statement No 324
Dr James Kirkwood (not scheduled to give oral evidence)
Statement to the BSE Inquiry
James K Kirkwood BVSc PhD FIBiol MRCVS
[This witness has not been asked to give oral evidence in Phase 1 of the Inquiry]
1. I became involved in the field of TSEs through my work as Head of the Veterinary Science Group at the Zoological Society of London’s Institute of Zoology. I held this post from November 1984 until June 1996, when I took up my present post at UFAW. During this time, concurrent with the BSE epidemic, cases of scrapie-like spongiform encephalopathies occurred in animals at the Zoological Society of London’s collections at Regent’s Park and Whipsnade and in other zoos. It was appropriate to investigate the epidemiology of these cases in order to try to determine the possible impact on zoo animals and breeding programmes, and to consider how the disease in zoo animals might be controlled.
2. Throughout the period from 1985 to March 1996, I worked at the Institute of Zoology (IoZ). I was Head of the Veterinary Science Group of the IoZ and Senior Veterinary Officer of the Zoological Society of London (ZSL). I was responsible for the provision of the veterinary service for the ZSL collections.
3. During the period from 1985 to March 1996, scrapie-like spongiform encephalopathies were diagnosed in the following animals which died, or were euthanased, at London Zoo and Whipsnade:
Animal Sex Date of Death Age (mos)
Arabian Oryx Oryx leucoryx F 24.3.89 38
Greater kudu Tragelaphus strepsiceros (Linda) F 18.8.89 30
Greater kudu (Karla) F 13.11.90 19 Greater kudu (Kaz) M 6.6.91 37
Greater kudu (Bambi) M 24.10.91 36
Greater kudu (346/90) M 26.2.92 18
Greater kudu (324/90) F 22.11.92 38
Cheetah Acinonyx jubatus (Michelle) F 22.12.93 91
All these cases were described in papers published in the scientific literature (as cited below).
EYES, RETINA, SHOULD NOT BE USED IN SCHOOLS, BAB, SOB, MRM,
BSE, PET FOOD, CRUSHED HEADS
IN PARTICULAR CRUSHED HEADS
YOU explained that imported crushed heads were extensively used in the petfood industry...
In particular I do not believe one can say that the levels of the scrapie agent in pet food are so low that domestic animals are not exposed.
BSE IN PETFOOD
1. The Secretary asked on 19 April whether I was content with the advice in para 3 of the record of the meeting on 17 March with the Parliamentary Secretary (Mr Thompson). The simple answer is ''not entirely''.
2. On occasions, material obtained from slaughterhouses will be derived from sheep affected with scrapie or cattle that may be incubating BSE for use in petfood manufacture. Some of this material must be classified as high risk since it contains brain, spinal cord, spleen or lymphatic glands.
Meldrum's notes on pet foods and materials used
IN CONFIDENCE CJD TO CATS...
It should be noted that under experimental conditions cats succumb to an encephalopathy after intracerebral inoculation of material derived from patients affected with Creutzfeldt-Jakob Disease.
Confidential BSE and __________________
3. I have thought very hard about whether the Branch should carry out a similar exercise with meat and meat products for human foods. On balance I do NOT think we should undertake it, but a final decision has not been taken and you may wish to discuss this further. ...
1st case natural FSE
NATURAL SPONGIFORM ENCEPHALOPATHY IN A DOMESTIC CAT
1. We have heard from MAFF that a domestic Siamese cat from the Bristol area has had spongiform encephalopathy confirmed. Although there are previous instances of experimental infection in cats, there have been no previous natural infections reported. The assumption must be the cat became infected by scrapie/BSE agent in it's food. ...
FSE and pharmaceuticals
1. An analysis by MCA Professional staff of the results to the questionnaire sent out to industry to obtain additional data about the use of animal materials of any origin in the manufacture of pharmaceutical products for human use, reveals that material of feline or canine origin is used in only two licensed products. In both instances the material is sourced from outside the U.K. and from areas currently believed to be free from B.S.E.
CONFIDENTIAL
Confidential cats/dogs and unsatisfactory posture MAFFs failure to assure key research
3. First, I am very uneasy about the relative lack of urgency and interest that MAFF appear to hold for getting the necessary research programme on BSE and related encephalopathies started, and getting it going fast. FOR EXAMPLE, MR BRADLEY of CVL said that there were difficulties in organizing transmission experiments from the brain of the cat which died of an encephalopathy in Bristol. There were arguments going on about who should pay for this work. Should it be MAFF, the Bristol Veterinary School or someone else? Dr. Tyrrell was clearly exasperated.
snip...
11. The Committee were even LESS FORTHCOMING on what their reaction might be if an encephalopathy is found in another species, perhaps in DOGS. Their first reaction was that, as with the cats, the first step could be to investigate whether this was really a new disease, or simply one that had not previously been recognized and to see whether it has any links to BSE, scrapie or other transmissible encephalopathies. Indeed, some members of the Committee seem to regard the whole question of another species as a hypothetical question to be addressed only when it happened. A rather UNSATISFACTORY POSTURE.
12. In advance of your meeting with Dr Tyrrell on Monday morning, I have not voiced my ANXIETIES about the support the Committee is receiving from MAFF to anyone OTHER THAN DR PICKLES. ...
SPONGIFORM ENCEPHALOPATHY IN A CAPTIVE PUMA
an article in yesterday's Times (attached) which suggested that the puma concerned had never ''eaten any part of a cow or sheep which, in the opinion of Government Scientists, could transmit the species to a different species''.
3. You explained to me that this was INCORRECT. The position was as set out in the briefing for Prime Minister's questions attached to Mr Taylor's note. The puma had probably been fed low quality beef meat in the form of split carcasses. ...
Subject: DEER SPONGIFORM ENCEPHALOPATHY SURVEY & HOUND STUDY Date: Thu, 17 Oct 2002 17:04:51 -0700 From: "Terry S. Singeltary Sr." Reply-To: Bovine Spongiform Encephalopathy To: BSE-L
Greetings BSE-L,
is there any other CWD surveys/testing in the UK on their deer? what sort of testing has been done to date on UK/EU deer? any input would be helpful... thank you
DEER SPONGIFORM ENCEPHALOPATHY SURVEY
3. This will be a low key study with no publicity to avoid unnecessary media interest. It will be carried out in two stages ;
(I) A small scale examination of around 30 deer brains to establish the normal histology of the healthy brain; and
(II) A larger scale random examination of 300 or more adult deer brains drawn from both deer farms and parks to establish whether there is any evidence of a cervine spongiform encephalopathy. ...
Ministry of Agriculture Fisheries and Food Veterinary Investigation Centre West House. Station Road. Thirsk Y07 IPZ Telephone: 0845·522065 Fax: 0845·525224
Your reference
Our reference RJH/ASB
Date 4 November 1992
DEER SPONGIFORM ENCEPHALOPATHY SURVEY
Dear Paul
I have now found time to review the 10 deer- brains collected from Mr Walker farm··via Winchester Via Winchester VIC. In answer to your specific question was there sufficient difference in preservation of brain tissue to warrant the extra effort involved in rapid brain removal on the farm, the answer is definitely "Yes." The original five brains (Winchester ref M487/11) showed varying degrees of autolytic vacuolation affecting both white and grey matter throughout the brain. vacuolation and separation of Purkinje cells and marked perivascular spaces. These artifacts made interpretation of subtle, specific pathological vacuolation more difficult. By contrast the second submission (Winchester reference N736/2) showed excellent preservation of white and grey matter. Any vacuolar Change present could be confidently interpreted as pathological albeit of unknown pathogenesis.
I can only reiterate the comments made by Gerald Wells and myself at the preliminary discussion at Weybridge in Autumn 1991. If the survey's purpose is an accurate histopathological interpretation of brain tissue. the material must be collected in a pristine state. This is particularly valid when looking for ar unrecognised and undefined spongiform encephalopathy in a new species. Deer brains are very large structures which take a lot of fixation and therefore must be handled sympathetically from the start. We have already seen the problems encountered in comparatively smaller hound brains where delayed fixation was a major limitation on interpretation of true pathological change.
The bottom line must be that if a pathologist's expertise is to be used, it is critical to collect artefact free brain material. If the politics or economics do not allow this, then I would suggest that an electron microscopy survey involving detection of scrapie associated fibrils would be much more appropriate.
Best wishes Yours sincerely
R J HIGGINS VIO 92/11.4/2.1
HOUND SURVEY
I am sorry, but I really could have been a co-signatory of Gerald's minute.
I do NOT think that we can justify devoting any resources to this study, especially as larger and more important projects such as the pathogenesis study will be quite demanding.
If there is a POLITICAL need to continue with the examination of hound brains then it should be passed entirely to the VI Service.
J W WILESMITH Epidemiology Unit 18 October 1991
Mr. R Bradley
cc: Mr. G A H Wells
***> 3.3. Mr R J Higgins in conjunction with Mr G A Wells and Mr A C Scott would by the end of the year, identify the three brains that were from the ''POSITIVE'' end of the lesion spectrum.
HOUND SURVEY PATHOLOGICAL REPORT (see positive results) and MAD DOGS AND ENGLISHMAN...
ya'll thought i was making this stuff up didn't ya...i don't make this stuff up!
It is clear that the designing scientists must also have shared Mr Bradley's surprise at the results because all the dose levels right down to 1 gram triggered infection.
second supplementary
Why did the appearance of new TSEs in animals matter so much? It has always been known that TSEs will transfer across species boundaries. The reason for this was never known until the genetic nature of the prion gene was fully investigated and found to be involved. The gene is found to have well preserved sites and as such there is a similar gene throughout the animal kingdom...and indeed a similar gene is found in insects! It is NOT clear that the precise close nature of the PrP gene structure is essention for low species barriers. Indeed it is probably easier to infect cats with BSE than it is to infect sheep. As such it is not clear that simply because it is possible to infect BSE from cattle into certain monkeys then other apes will necessarily be infectable with the disease. One factor has stood out, however, and that is that BSE, when inoculated into mice would retain its apparent nature of disease strain, and hence when it was inoculated back into cattle, then the same disease was produced. Similarly if the TSE from kudu was inoculated into mice then a similar distribution of disease in the brain of the mouse is seen as if BSE had been inoculated into the mouse. This phenomenon was not true with scrapie, in which the transmission across a species barrier was known to lose many of the scrapie strain phenomena in terms of incubation period or disease histopathology. This also suggested that BSE was not derived from scrapie originally but we probably will never know.
------------------------------------------------------------------------
TSE in wild UK deer? The first case of BSE (as we now realise) was in a nyala in London zoo and the further zoo cases in ungulates were simply thought of as being interesting transmissions of scrapie initially. The big problem started to appear with animals in 1993-5 when it became clear that there was an increase in the CJD cases in people that had eaten deer although the statistics involved must have been questionable. The reason for this was that the CJD Surveillance was well funded to look into the diet of people dying of CJD. This effect is not clear with vCJD...if only because the numbers involved are much smaller and hence it is difficult to gain enough statistics. They found that many other foods did not appear to have much association at all but that deer certainly did and as years went by the association actually became clearer. The appearance of vCJD in 1996 made all this much more difficult in that it was suddenly clearer that the cases of sporadic CJD that they had been checking up until then probably had nothing to do with beef...and the study decreased. During the period there was an increasing worry that deer were involved with CJD..
see references:
DEER BRAIN SURVEY
1993 cjd report finds relationship with eat venison and cjd increases 9 fold, let the cover up begin...tss
FINDINGS
*** The association between venison eating and risk of CJD shows similar pattern, with regular venison eating associated with a 9 FOLD INCREASE IN RISK OF CJD (p = 0.04). ***
There is some evidence that risk of CJD INCREASES WITH INCREASING FREQUENCY OF LAMB EATING (p = 0.02)..
The evidence for such an association between beef eating and CJD is weaker (p = 0.14). When only controls for whom a relative was interviewed are included, this evidence becomes a little STRONGER (p = 0.08).
snip...
It was found that when veal was included in the model with another exposure, the association between veal and CJD remained statistically significant (p = < 0.05 for all exposures), while the other exposures ceased to be statistically significant (p = > 0.05).
snip...
In conclusion, an analysis of dietary histories revealed statistical associations between various meats/animal products and INCREASED RISK OF CJD. When some account was taken of possible confounding, the association between VEAL EATING AND RISK OF CJD EMERGED AS THE STRONGEST OF THESE ASSOCIATIONS STATISTICALLY. ...
snip...
In the study in the USA, a range of foodstuffs were associated with an increased risk of CJD, including liver consumption which was associated with an apparent SIX-FOLD INCREASE IN THE RISK OF CJD. By comparing the data from 3 studies in relation to this particular dietary factor, the risk of liver consumption became non-significant with an odds ratio of 1.2 (PERSONAL COMMUNICATION, PROFESSOR A. HOFMAN. ERASMUS UNIVERSITY, ROTTERDAM). (???...TSS)
snip...see full report ;
GAME FARM INDUSTRY WANTS TO COVER UP FINDINGS OF INCREASE RISK TO CJD FROM CERVID
BSE INQUIRY
CJD9/10022
October 1994
Mr R.N. Elmhirst Chairman British Deer Farmers Association Holly Lodge Spencers Lane
BerksWell Coventry CV7 7BZ
Dear Mr Elmhirst,
CREUTZFELDT-JAKOB DISEASE (CJD) SURVEILLANCE UNIT REPORT
Thank you for your recent letter concerning the publication of the third annual report from the CJD Surveillance Unit. I am sorry that you are dissatisfied with the way in which this report was published.
The Surveillance Unit is a completely independant outside body and the Department of Health is committed to publishing their reports as soon as they become available. In the circumstances it is not the practice to circulate the report for comment since the findings of the report would not be amended.. In future we can ensure that the British Deer Farmers Association receives a copy of the report in advance of publication.
The Chief Medical Officer has undertaken to keep the public fully informed of the results of any research in respect of CJD. This report was entirely the work of the unit and was produced completely independantly of the the Department.
The statistical results reqarding the consumption of venison was put into perspective in the body of the report and was not mentioned at all in the press release. Media attention regarding this report was low key but gave a realistic presentation of the statistical findings of the Unit. This approach to publication was successful in that consumption of venison was highlighted only once by the media ie. in the News at one television proqramme.
I believe that a further statement about the report, or indeed statistical links between CJD and consumption of venison, would increase, and quite possibly give damaging credence, to the whole issue. From the low key media reports of which I am aware it seems unlikely that venison consumption will suffer adversely, if at all.
http://web.archive.org/web/20030511010117/http://www.bseinquiry.gov.uk/files/yb/1994/10/00003001.pdf
Management In Confidence
BSE: Private Submission of Bovine Brain Dealler
Subject: Re: DEER SPONGIFORM ENCEPHALOPATHY SURVEY & HOUND STUDY
Date: Fri, 18 Oct 2002 23:12:22 +0100
From: Steve Dealler
Reply-To: Bovine Spongiform Encephalopathy Organization: Netscape Online member
To: BSE-L@ References: <3daf5023 .4080804="" a="" fg_scanned="1" href="http://wt.net/" nbsp="" rel="noopener noreferrer" shape="rect" style="color: blue; cursor: pointer;" target="_blank">wt.net
Dear Terry,
An excellent piece of review as this literature is desparately difficult to get back from Government sites.
What happened with the deer was that an association between deer meat eating and sporadic CJD was found in about 1993. The evidence was not great but did not disappear after several years of asking CJD cases what they had eaten. I think that the work into deer disease largely stopped because it was not helpful to the UK industry...and no specific cases were reported. Well, if you dont look adequately like they are in USA currenly then you wont find any!
Steve Dealler
Stephen Dealler is a consultant medical microbiologist deal@airtime.co.uk
===============
https://caninespongiformencephalopathy.blogspot.com/2010/03/canine-spongiform-encephalopathy-aka.html
*** DEFRA TO SINGELTARY ON HOUND STUDY AND BSE 2001 ***
DEFRA Department for Environment, Food & Rural Affairs Area 307, London, SW1P 4PQ Telephone: 0207 904 6000 Direct line: 0207 904 6287 E-mail: h.mcdonagh.defra.gsi.gov.uk GTN: FAX: Mr T S Singeltary P.O. Box Bacliff Texas USA 77518 21 November 2001
Dear Mr Singeltary
TSE IN HOUNDS Thank you for e-mail regarding the hounds survey. I am sorry for the long delay in responding. As you note, the hound survey remains unpublished. However the Spongiform Encephalopathy Advisory Committee (SEAC), the UK Government's independent Advisory Committee on all aspects related to BSE-like disease, gave the hound study detailed consideration at their meeting in January 1994. As a summary of this meeting published in the BSE inquiry noted, the Committee were clearly concerned about the work that had been carried out, concluding that there had clearly been problems with it, particularly the control on the histology, and that it was more or less inconclusive. However was agreed that there should be a re-evaluation of the pathological material in the study.
Later, at their meeting in June 95, The Committee re-evaluated the hound study to see if any useful results could be gained from it. The Chairman concluded that there were varying opinions within the Committee on further work. It did not suggest any further transmission studies and thought that the lack of clinical data was a major weakness.
Overall, it is clear that SEAC had major concerns about the survey as conducted. As a result it is likely that the authors felt that it would not stand up to peer review and hence it was never published. As noted above, and in the detailed minutes of the SEAC meeting in June 95, SEAC considered whether additional work should be performed to examine dogs for evidence of TSE infection. Although the Committee had mixed views about the merits of conducting further work, the Chairman noted that when the Southwood Committee made their recommendation to complete an assessment of possible spongiform disease in dogs, no TSEs had been identified in other species and hence dogs were perceived as a high risk population and worthy of study. However subsequent to the original recommendation, made in 1990, a number of other species had been identified with TSE ( e.g. cats) so a study in hounds was less critical.
For more details see- http://www.bseinquiry.gov.uk/files/yb/1995/06/21005001.pdf
new url;
As this study remains unpublished, my understanding is that the ownership of the data essentially remains with the original researchers. Thus unfortunately, I am unable to help with your request to supply information on the hound survey directly. My only suggestion is that you contact one of the researchers originally involved in the project, such as Gerald Wells. He can be contacted at the following address. Dr Gerald Wells, Veterinary Laboratories Agency, New Haw, Addlestone, Surrey, KT 15 3NB, UK
You may also wish to be aware that since November 1994 all suspected cases of spongiform encephalopathy in animals and poultry were made notifiable. Hence since that date there has been a requirement for vets to report any su
===============
U.S.A. 50 STATE BSE MAD COW CONFERENCE CALL Jan. 9, 2001
Subject: BSE--U.S. 50 STATE CONFERENCE CALL Jan. 9, 2001
Date: Tue, 9 Jan 2001 16:49:00 -0800
From: "Terry S. Singeltary Sr."
Reply-To: Bovine Spongiform Encephalopathy
snip...
[host Richard Barns] and now a question from Terry S. Singeltary of CJD Watch.
[TSS] yes, thank you, U.S. cattle, what kind of guarantee can you give for serum or tissue donor herds?
[no answer, you could hear in the back ground, mumbling and 'we can't. have him ask the question again.]
[host Richard] could you repeat the question?
[TSS] U.S. cattle, what kind of guarantee can you give for serum or tissue donor herds?
[not sure whom ask this] what group are you with?
[TSS] CJD Watch, my Mom died from hvCJD and we are tracking CJD world-wide.
[not sure who is speaking] could you please disconnect Mr. Singeltary
[TSS] you are not going to answer my question?
[not sure whom speaking] NO
snip...see full archive and more of this;
===============
MONDAY, FEBRUARY 25, 2019
MAD DOGS AND ENGLISHMEN BSE, SCRAPIE, CWD, CJD, TSE PRION A REVIEW 2019
SATURDAY, FEBRUARY 23, 2019
Chronic Wasting Disease CWD TSE Prion and THE FEAST 2003 CDC an updated review of the science 2019
TUESDAY, NOVEMBER 04, 2014
Six-year follow-up of a point-source exposure to CWD contaminated venison in an Upstate New York community: risk behaviours and health outcomes 2005–2011
Authors, though, acknowledged the study was limited in geography and sample size and so it couldn't draw a conclusion about the risk to humans. They recommended more study. Dr. Ermias Belay was the report's principal author but he said New York and Oneida County officials are following the proper course by not launching a study. "There's really nothing to monitor presently. No one's sick," Belay said, noting the disease's incubation period in deer and elk is measured in years. "
Transmission Studies
Mule deer transmissions of CWD were by intracerebral inoculation and compared with natural cases {the following was written but with a single line marked through it ''first passage (by this route)}....TSS
resulted in a more rapidly progressive clinical disease with repeated episodes of synocopy ending in coma. One control animal became affected, it is believed through contamination of inoculum (?saline). Further CWD transmissions were carried out by Dick Marsh into ferret, mink and squirrel monkey. Transmission occurred in ALL of these species with the shortest incubation period in the ferret.
snip....
Prion Infectivity in Fat of Deer with Chronic Wasting Disease▿
Brent Race#, Kimberly Meade-White#, Richard Race and Bruce Chesebro* + Author Affiliations
In mice, prion infectivity was recently detected in fat. Since ruminant fat is consumed by humans and fed to animals, we determined infectivity titers in fat from two CWD-infected deer. Deer fat devoid of muscle contained low levels of CWD infectivity and might be a risk factor for prion infection of other species.
Prions in Skeletal Muscles of Deer with Chronic Wasting Disease
Here bioassays in transgenic mice expressing cervid prion protein revealed the presence of infectious prions in skeletal muscles of CWD-infected deer, demonstrating that humans consuming or handling meat from CWD-infected deer are at risk to prion exposure.
*** now, let’s see what the authors said about this casual link, personal communications years ago, and then the latest on the zoonotic potential from CWD to humans from the TOKYO PRION 2016 CONFERENCE.
see where it is stated NO STRONG evidence. so, does this mean there IS casual evidence ???? “Our conclusion stating that we found no strong evidence of CWD transmission to humans”
From: TSS (216-119-163-189.ipset45.wt.net)
Subject: CWD aka MAD DEER/ELK TO HUMANS ???
Date: September 30, 2002 at 7:06 am PST
From: "Belay, Ermias"
To: Cc: "Race, Richard (NIH)" ; ; "Belay, Ermias"
Sent: Monday, September 30, 2002 9:22 AM
Subject: RE: TO CDC AND NIH - PUB MED- 3 MORE DEATHS - CWD - YOUNG HUNTERS
Dear Sir/Madam,
In the Archives of Neurology you quoted (the abstract of which was attached to your email), we did not say CWD in humans will present like variant CJD.. That assumption would be wrong. I encourage you to read the whole article and call me if you have questions or need more clarification (phone: 404-639-3091). Also, we do not claim that "no-one has ever been infected with prion disease from eating venison." Our conclusion stating that we found no strong evidence of CWD transmission to humans in the article you quoted or in any other forum is limited to the patients we investigated.
Ermias Belay, M.D. Centers for Disease Control and Prevention
-----Original Message-----
From: Sent: Sunday, September 29, 2002 10:15 AM
Subject: TO CDC AND NIH - PUB MED- 3 MORE DEATHS - CWD - YOUNG HUNTERS
Sunday, November 10, 2002 6:26 PM .......snip........end..............TSS
Thursday, April 03, 2008
A prion disease of cervids: Chronic wasting disease 2008 1: Vet Res. 2008 Apr 3;39(4):41 A prion disease of cervids: Chronic wasting disease Sigurdson CJ.
snip...
*** twenty-seven CJD patients who regularly consumed venison were reported to the Surveillance Center***,
snip... full text ;
> However, to date, no CWD infections have been reported in people.
sporadic, spontaneous CJD, 85%+ of all human TSE, just not just happen. never in scientific literature has this been proven.
if one looks up the word sporadic or spontaneous at pubmed, you will get a laundry list of disease that are classified in such a way;
sporadic = 54,983 hits https://www.ncbi.nlm.nih.gov/pubmed/?term=sporadic
spontaneous = 325,650 hits https://www.ncbi.nlm.nih.gov/pubmed/?term=spontaneous
key word here is 'reported'. science has shown that CWD in humans will look like sporadic CJD. SO, how can one assume that CWD has not already transmitted to humans? they can't, and it's as simple as that. from all recorded science to date, CWD has already transmitted to humans, and it's being misdiagnosed as sporadic CJD. ...terry
*** LOOKING FOR CWD IN HUMANS AS nvCJD or as an ATYPICAL CJD, LOOKING IN ALL THE WRONG PLACES $$$ ***
*** 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).***
SUNDAY, SEPTEMBER 08, 2019
Wisconsin Laboratory Testing Options for Prion Diseases, Wisconsin Neurologists, Clinical Laboratory Directors, and Infection Preventionists, Please Distribute Widely
Preparing for the Storm
TUESDAY, MARCH 12, 2019
Early preclinical detection of prions in the skin of prion-infected animals
TUESDAY, JANUARY 1, 2019
***> CHILDHOOD EXPOSURE TO CADAVERIC DURA Singeltary et al
SUNDAY, OCTOBER 21, 2018
Surveillance for variant CJD: should more children with neurodegenerative diseases have autopsies? Singeltary Review
FRIDAY, DECEMBER 14, 2018
Transmission of amyloid-β protein pathology from cadaveric pituitary growth hormone December 14, 2018
Tuesday, December 12, 2017
Neuropathology of iatrogenic Creutzfeldt–Jakob disease and immunoassay of French cadaver-sourced growth hormone batches suggest possible transmission of tauopathy and long incubation periods for the transmission of Abeta pathology
http://tauopathies.blogspot.com/2017/12/neuropathology-of-iatrogenic.html
Neuropathology of iatrogenic Creutzfeldt–Jakob disease and immunoassay of French cadaver-sourced growth hormone batches suggest possible transmission of tauopathy and long incubation periods for the transmission of Abeta pathology
http://tauopathies.blogspot.com/2017/12/neuropathology-of-iatrogenic.html
Friday, January 29, 2016
Synucleinopathies: Past, Present and Future, iatrogenic, what if?
FRIDAY, JANUARY 10, 2014
vpspr, sgss, sffi, TSE, an iatrogenic by-product of gss, ffi, familial type prion disease, what it ???
Greetings Friends, Neighbors, and Colleagues,
vpspr, sgss, sffi, TSE, an iatrogenic by-product of gss, ffi, familial type prion disease, what it ???
Confucius is confused again.
I was just sitting and thinking about why there is no genetic link to some of these TSE prion sGSS, sFFi, and it’s really been working on my brain, and then it hit me today.
what if, vpspr, sgss, sffi, TSE prion disease, was a by-product from iatrogenic gss, ffi, familial type prion disease ???
it could explain the cases of no genetic link to the gss, ffi, familial type prion disease, to the family.
sporadic and familial is a red herring, in my opinion, and underestimation is spot on, due to the crude prehistoric diagnostic procedures and criteria and definition of a prion disease.
I say again, what if, iatrogenic, what if, with all these neurological disorders, with a common denominator that is increasingly showing up in the picture, called the prion.
I urge all scientist to come together here, with this as the utmost of importance about all these neurological disease that are increasingly showing up as a prion mechanism, to put on the front burners, the IATROGENIC aspect and the potential of transmission there from, with diseases/disease??? in question.
by definition, could they be a Transmissible Spongiform Encephalopathy TSE prion type disease, and if so, what are the iatrogenic chances of transmission?
this is very important, and should be at the forefront of research, and if proven, could be a monumental breakthrough in science and battle against the spreading of these disease/diseases.
the US National Library of Medicine National Institutes of Health pub-med site, a quick search of the word SPORADIC will give you a hit of 40,747. of those, there are a plethora of disease listed under sporadic. sporadic simply means (UNKNOWN).
the US National Library of Medicine National Institutes of Health pub-med site, a quick search of the word FAMILIAL will give you a hit of 921,815. of those, there are a plethora of disease listed under familial.
again, sporadic and familial is a red herring, in my opinion.
also, in my opinion, when you start have disease such as sporadic Fatal Familial Insomnia, (and or sporadic GSS, or the VPSPr type prion disease), and there is NO familial genetic linkage to the family of the diseased, I have serious questions there as to a familial type disease, and thus, being defined as such.
snip...see full text;
Friday, January 10, 2014
vpspr, sgss, sffi, TSE, an iatrogenic by-product of gss, ffi, familial type prion disease, what it ???
The tissue distribution of infectivity in CWD‐infected cervids is now known to extend beyond CNS and lymphoid tissues. While the removal of these specific tissues from the food chain would reduce human dietary exposure to infectivity, exclusion from the food chain of the whole carcass of any infected animal would be required to eliminate human dietary exposure.
***> In particular the US data do not clearly exclude the possibility of human (sporadic or familial) TSE development due to consumption of venison. The Working Group thus recognizes a potential risk to consumers if a TSE would be present in European cervids.'' Scientific opinion on chronic wasting disease (II) <***
REVIEW
***> In conclusion, sensory symptoms and loss of reflexes in Gerstmann-Sträussler-Scheinker syndrome can be explained by neuropathological changes in the spinal cord. We conclude that the sensory symptoms and loss of lower limb reflexes in Gerstmann-Sträussler-Scheinker syndrome is due to pathology in the caudal spinal cord. <***
***> The clinical and pathological presentation in macaques was mostly atypical, with a strong emphasis on spinal cord pathology.<***
***> The notion that CWD can be transmitted orally into both new-world and old-world non-human primates asks for a careful reevaluation of the zoonotic risk of CWD. <***
***> All animals have variable signs of prion neuropathology in spinal cords and brains and by supersensitive IHC, reaction was detected in spinal cord segments of all animals.<***
***> In particular the US data do not clearly exclude the possibility of human (sporadic or familial) TSE development due to consumption of venison. The Working Group thus recognizes a potential risk to consumers if a TSE would be present in European cervids.'' Scientific opinion on chronic wasting disease (II) <***
Thursday, March 8, 2018
Familial human prion diseases associated with prion protein mutations Y226X and G131V are transmissible to transgenic mice expressing human prion protein
MONDAY, NOVEMBER 23, 2015
Blood transmission studies of prion infectivity in the squirrel monkey (Saimiri sciureus): the Baxter study
ORIGINAL RESEARCH
Blood transmission studies of prion infectivity in the squirrel monkey (Saimiri sciureus): the Baxter study
Diane L. Ritchie1,*, Susan V. Gibson2,†, Christian R. Abee3, Thomas R. Kreil4, James W. Ironside1 and Paul Brown5 Article first published online: 23 NOV 2015 DOI: 10.1111/trf.13422 © 2015 AABB
Issue Cover image for Vol. 55 Issue 11 Transfusion Early View (Online Version of Record published before inclusion in an issue)
Abstract
BACKGROUND Four secondary transmissions of variant Creutzfeldt-Jakob disease (vCJD) infectivity have been associated with the transfusion of nonleukoreduced red blood cells collected from vCJD patients during the asymptomatic phase of the disease. Establishing efficient experimental models for assessing the risk of future transmissions of vCJD infectivity via blood transfusion is of paramount importance in view of a study of archived appendix samples in which the prevalence of asymptomatic vCJD infection in the United Kingdom was estimated at approximately 1 in 2000 of the population. In this study, we investigated transmission of vCJD and sporadic CJD (sCJD) infectivity from blood using the squirrel monkey, which is highly susceptible to experimental challenge with human prion disease.
STUDY DESIGN AND METHODS Whole blood collected from vCJD- and sCJD-infected squirrel monkeys was transfused at multiple time points into recipient squirrel monkeys. Blood recipients were euthanized approximately 7 years after their first blood transfusion.
RESULTS No clinical or pathologic signs of a prion disease were observed in either the sCJD- or the vCJD-transfused monkeys, and immunohistochemistry and biochemical investigations showed no PrPTSE in central nervous system or lymphoreticular tissues. Similarly, monkeys inoculated intracerebrally (IC) and intravenously (IV) with either buffy coat or plasma from vCJD and sCJD patients failed to develop disease. However, white blood cells from a chimpanzee-passaged strain of human Gerstmann-Sträussler-Scheinker (GSS) disease transmitted autopsy-proven disease to two IC-inoculated monkeys after incubation periods of 34 and 39 months.
CONCLUSION Blood transmits GSS but not sCJD or vCJD infectivity to IC- or IV-inoculated squirrel monkeys within a 7-year observation period.
2015 PRION CONFERENCE
*** RE-P.164: Blood transmission of prion infectivity in the squirrel monkey: The Baxter study
***suggest that blood donations from cases of GSS (and perhaps other familial forms of TSE) carry more risk than from vCJD cases, and that little or no risk is associated with sCJD.
*** P.164: Blood transmission of prion infectivity in the squirrel monkey: The Baxter study
Paul Brown1, Diane Ritchie2, James Ironside2, Christian Abee3, Thomas Kreil4, and Susan Gibson5 1NIH (retired); Bethesda, MD USA; 2University of Edinburgh; Edinburgh, UK; 3University of Texas; Bastrop, TX USA; 4Baxter Bioscience; Vienna, Austria; 5University of South Alabama; Mobile, AL USA
Five vCJD disease transmissions and an estimated 1 in 2000 ‘silent’ infections in UK residents emphasize the continued need for information about disease risk in humans. A large study of blood component infectivity in a non-human primate model has now been completed and analyzed. Among 1 GSS, 4 sCJD, and 3 vCJD cases, only GSS leukocytes transmitted disease within a 5–6 year surveillance period. A transmission study in recipients of multiple whole blood transfusions during the incubation and clinical stages of sCJD and vCJD in ic-infected donor animals was uniformly negative. These results, together with other laboratory studies in rodents and nonhuman primates and epidemiological observations in humans, suggest that blood donations from cases of GSS (and perhaps other familial forms of TSE) carry more risk than from vCJD cases, and that little or no risk is associated with sCJD. The issue of decades-long incubation periods in ‘silent’ vCJD carriers remains open.
ran across an old paper from 1984 ;
***The occurrence of contact cases raises the possibility that transmission in families may be effected by an unusually virulent strain of the agent. ***
SUNDAY, MAY 26, 2019
Arguments for Alzheimer’s and Parkinson’s diseases caused by prions Stanley B. Prusiner
''From a large array of bioassays, we conclude that AD, PD, MSA, and the frontotemporal dementias, including PSP and CBD, are all prion diseases''
P132 Aged cattle brain displays Alzheimer’s-like pathology that can be propagated in a prionlike manner
Ines Moreno-Gonzalez (1), George Edwards III (1), Rodrigo Morales (1), Claudia Duran-Aniotz (1), Mercedes Marquez (2), Marti Pumarola (2), Claudio Soto (1)
snip...
These results may contribute to uncover a previously unsuspected etiology surrounding some cases of sporadic AD. However, the early and controversial stage of the field of prion-like transmission in non-prion diseases added to the artificial nature of the animal models utilized for these studies, indicate that extrapolation of the results to humans should not be done without further experiments.
P75 Determining transmissibility and proteome changes associated with abnormal bovine prionopathy
Dudas S (1,2), Seuberlich T (3), Czub S (1,2)
In prion diseases, it is believed that altered protein conformation encodes for different pathogenic strains. Currently 3 different strains of bovine spongiform encephalopathy (BSE) are confirmed. Diagnostic tests for BSE are able to identify animals infected with all 3 strains, however, several diagnostic laboratories have reported samples with inconclusive results which are challenging to classify. It was suggested that these may be novel strains of BSE; to determine transmissibility, brain material from index cases were inoculated into cattle.
In the first passage, cattle were intra-cranially challenged with brain homogenate from 2 Swiss animals with abnormal prionopathy. The challenged cattle incubated for 3 years and were euthanized with no clinical signs of neurologic disease. Animals were negative when tested on validated diagnostic tests but several research methods demonstrated changes in the prion conformation in these cattle, including density gradient centrifugation and immunohistochemistry. Currently, samples from the P1 animals are being tested for changes in protein levels using 2-D Fluorescence Difference Gel Electrophoresis (2D DIGE) and mass spectrometry. It is anticipated that, if a prionopathy is present, this approach should identify pathways and targets to decipher the source of altered protein conformation. In addition, a second set of cattle have been challenged with brain material from the first passage. Ideally, these cattle will be given a sufficient incubation period to provide a definitive answer to the question of transmissibility.
=====prion 2018===
***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
P.9.21
Molecular characterization of BSE in Canada
Jianmin Yang 1 , Sandor Dudas 2 , Catherine Graham 2 , Markus Czub 3 , Tim McAllister 1 , Stefanie Czub 1 1 Agriculture and Agri-Food Canada Research Centre, Canada; 2 National and OIE BSE Reference Laboratory, Canada; 3 University of Calgary, Canada
Background: Three BSE types (classical and two atypical) have been identified on the basis of molecular characteristics of the misfolded protein associated with the disease. To date, each of these three types have been detected in Canadian cattle. Objectives: This study was conducted to further characterize the 16 Canadian BSE cases based on the biochemical properties of there associated PrPres.
Methods: Immuno-reactivity, molecular weight, glycoform profiles and relative proteinase K sensitivity of the PrPres from each of the 16 confirmed Canadian BSE cases was determined using modified Western blot analysis.
Results: Fourteen of the 16 Canadian BSE cases were C type, 1 was H type and 1 was L type. The Canadian H and L-type BSE cases exhibited size shifts and changes in glycosylation similar to other atypical BSE cases. PK digestion under mild and stringent conditions revealed a reduced protease resistance of the atypical cases compared to the C-type cases. N terminal-specific antibodies bound to PrPres from H type but not from C or L type. The C-terminal-specific antibodies resulted in a shift in the glycoform profile and detected a fourth band in the Canadian H-type BSE.
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.
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
*** Singeltary reply ; Molecular, Biochemical and Genetic Characteristics of BSE in Canada Singeltary reply;
SUNDAY, SEPTEMBER 1, 2019
FDA Reports on VFD Compliance
Before and after the current Veterinary Feed Directive (VFD) rules took full effect in January, 2017, the FDA focused primarily on education and outreach to help feed mills, veterinarians and producers understand and comply with the requirements. Since then, FDA has gradually increased the number of VFD inspections and initiated enforcement actions when necessary.
terry
