Commentary
Alimentary prion infections: Touch-down in the intestine
Volume 5, Issue 1 January/February/March 2011 Bianca Da Costa Dias, Katarina Jovanovic and Stefan F.T. Weiss View affiliations Hide affiliations Bianca Da Costa DiasSchool of Molecular and Cell Biology; University of the Witwatersrand; Johannesburg, Republic of South Africa Katarina JovanovicSchool of Molecular and Cell Biology; University of the Witwatersrand; Johannesburg, Republic of South Africa Stefan F.T. WeissCorresponding author: stefan.weiss@wits.ac.za School of Molecular and Cell Biology; University of the Witwatersrand; Johannesburg, Republic of South Africa
Neurodegenerative diseases are caused by proteinaceous aggregates, usually consisting of misfolded proteins which are often typified by a high proportion of ß-sheets, which accumulate in the Central Nervous System. These diseases, including Morbus Alzheimer, Parkinson disease and Transmissible Spongiform Encephalopathies (TSEs) also termed prion disorders, afflict a substantial proportion of the human population and as such the etiology and pathogenesis of these diseases has been the focus of mounting research. Although many of these diseases arise from genetic mutations or are sporadic in nature, the possible horizontal transmissibility of neurodegenerative diseases poses a great threat to population health. In this article we discuss recent studies which suggest that the “non-transmissible” status bestowed upon Alzheimer and Parkinson diseases may need to be revised as these diseases have been successfully induced through tissue transplants. Furthermore, we highlight the importance of investigating the “natural” mechanism of prion transmission including peroral and perenteral transmission, proposed routes of gastrointestinal uptake and neuroinvasion of ingested infectious prion proteins. We examine the multitude of factors which may influence oral transmissibility and discuss the zoonotic threats which Chronic Wasting Disease (CWD), Bovine Spongiform Encephalopathy (BSE) and Scrapie may pose resulting in vCJD or related disorders. In addition, we suggest that the 37 kDa/67 kDa laminin receptor on the cell surface of enterocytes, a major cell population in the intestine, may play an important role in the intestinal pathophysiology of alimentary prion infections.
http://www.landesbioscience.com/journals/prion/article/14283
Commentary ß-amyloid oligomers and prion protein: Fatal attraction?
Volume 5, Issue 1 January/February/March 2011 Gianluigi Forloni and Claudia Balducci
Gianluigi Forloni Corresponding author: forloni@marionegri.it
Claudia Balducci Biology of Neurodegenerative Diseases Lab; Department of Neuroscience; “Mario Negri” Institute for Pharmacological Research; Milano, Italy
The relationship between Alzheimer disease (AD) and prion-related encephalopathies (TSE) has been proposed by different points of view. Recently, the scientific attention has been attracted by the results proposing the possibility that PrPc, the protein whose pathologic form is responsible of TSE, can mediated the toxic effect of ß amyloid (Aß) oligomers. The oligomers are considered the culprit of the neurodegenerative process associated to AD, although the pathogenic mechanism activated by these small aggregates remain to be elucidated. In the initial study based on the binding screening PrPc was identified as ligand /receptor of Aß oligomers, while long term potentiation (LTP) analysis in vitro and behavioural studies in vivo, demonstrated that the absence of PrPc abolished the damage induced by Aß oligomers. The high affinity binding Aß oligomers-PrPc has been confirmed, whereas a functional role of this association has been excluded by three different studies. We approached this issue by the direct application of Aß oligomers in the brain followed by the behavioural examination of memory deficits. Our data using PrP knock-out mice suggest that Aß 1-42 oligomers are responsible for cognitive impairment in AD but PrPc is not required for their effect. Similarly, in two other studies the LTP alterations induced by Aß 1-42 oligomers was not influenced by the absence of PrP. Possible explanations of these contradictory results are discussed.
http://www.landesbioscience.com/journals/prion/article/14367/
http://www.landesbioscience.com/journals/prion/toc/volume/5/issue/1/
BSE101/1 0136
IN CONFIDENCE
CMO
From: Dr J S Metters DCMO
4 November 1992
TRANSMISSION OF ALZHEIMER TYPE PLAQUES TO PRIMATES
http://collections.europarchive.org/tna/20081106170650/http://www.bseinquiry.gov.uk/files/yb/1992/11/04001001.pdf
CJD1/9 0185
Ref: 1M51A
IN STRICT CONFIDENCE
From: Dr. A Wight
Date: 5 January 1993
Copies:
Dr Metters
Dr Skinner
Dr Pickles
Dr Morris
Mr Murray
TRANSMISSION OF ALZHEIMER-TYPE PLAQUES TO PRIMATES
http://collections.europarchive.org/tna/20080102191246/http://www.bseinquiry.gov.uk/files/yb/1993/01/05004001.pdf
Friday, October 22, 2010
Peripherally Applied Aß-Containing Inoculates Induce Cerebral ß-Amyloidosis
http://betaamyloidcjd.blogspot.com/2010/10/peripherally-applied-containing.html
Friday, September 3, 2010
Alzheimer's, Autism, Amyotrophic Lateral Sclerosis, Parkinson's, Prionoids, Prionpathy, Prionopathy, TSE
http://betaamyloidcjd.blogspot.com/2010/09/alzheimers-autism-amyotrophic-lateral.html
http://betaamyloidcjd.blogspot.com/
Posted On December 20, 2003 AFTER THE FIRST CASE OF MAD COW DISEASE IN THE USA WAS DOCUMENTED
" Like many activists, Singletary ignores overwhelming epidemiological and laboratory evidence that rules out a connection between sporadic CJD and beef. Relying entirely on shallow circumstantial evidence and frequent repetition of claims which have been publicly refuted as false, he also blindly insists upon a mad-cow with Alzheimer’s, Parkinson’s, and Lou Gehrig’s disease. "
http://www.consumerfreedom.com/article_detail.cfm/a/138-mad-cow-scaremongers
SO, just who are The Center for Consumer Freedom ;
http://www.consumerfreedom.com/index.cfm
let's take a closer look shall we ;
The Center for Consumer Freedom (CCF) (formerly called the "Guest Choice Network (GCN)") is a front group for the restaurant, alcohol and tobacco industries. It runs media campaigns which oppose the efforts of scientists, doctors, health advocates, environmentalists and groups like Mothers Against Drunk Driving, calling them "the Nanny Culture -- the growing fraternity of food cops, health care enforcers, anti-meat activists, and meddling bureaucrats who 'know what's best for you.'"
CCF is registered as a tax-exempt, non-profit organization under the IRS code 501(c)(3). Its advisory board is comprised mainly of representatives from the restaurant, meat and alcoholic beverage industries.
http://www.sourcewatch.org/index.php?title=Center_for_Consumer_Freedom
http://en.wikipedia.org/wiki/Center_for_Consumer_Freedom
What Is the Center for Consumer Freedom, and Why Is It Attacking PETA?
The Center for Consumer Freedom is a nonprofit corporation run by lobbyist Richard Berman through his Washington, D.C.-based for-profit public relations company, Berman & Co. The Center for Consumer Freedom, formerly known as the Guest Choice Network, was set up by Berman with a $600,000 “donation” from tobacco company Philip Morris.
Berman arranges for large sums of corporate money to find its way into nonprofit societies of which he is the executive director. He then hires his own company as a consultant to these nonprofit groups. Of the millions of dollars “donated” by Philip Morris between the years 1995 and 1998, 49 percent to 79 percent went directly to Berman or Berman & Co.
Richard Berman is an influence peddler. He has worked out a scheme to funnel charitable donations from wealthy corporations into his own pocket. In exchange, he provides a flurry of disinformation, flawed studies, op-ed pieces, letters to the editor, and trade-industry articles, as well as access to his high-level government contacts, who are servants of the industries he represents.
Berman’s name might sound familiar. In 1995, Berman and Norm Brinker, his former boss at Steak and Ale Restaurants, were identified as the special-interest lobbyists who donated the $25,000 that disgraced then-House Speaker Newt Gingrich, who was hauled before the House Ethics Committee for influence-peddling over the money. Berman and Brinker were lobbying against raising the minimum wage.
Richard Berman is a spin doctor. For example, he has argued against a Mothers Against Drunk Driving (MADD) initiative to lower the blood alcohol content (BAC) limit for drivers by claiming that the stricter limits would punish responsible social drinkers. He has claimed that U.S. Centers for Disease Control and Prevention (CDC) warnings about salmonella-related food poisoning are just “whipping up fear over food.”
Here’s how an internal Philip Morris memo described Berman’s spin: “His proposed solution would broaden the focus of the ‘smoking issue,’ and expand into the bigger picture of over-regulation.” Smoking won’t kill you; over-regulation will.
Berman is “a one-man wrecking crew on important issues.” His approach has been described as “misleading” and “despicable.” Berman has been called “a tobacco company whore,” but he’s branched out since then.
Using “freedom of choice” as his battle cry, Berman has now taken on PETA and a number of other groups and organizations whose points of view could have an impact on the profits of his clients by waking consumers up. Berman’s Guest Choice Network has an “advisory panel” whose members in 1998 included officials representing companies ranging from Cargill Processed Meat Products and Outback Steakhouse to Minnesota Licensed Beverage Association and Sutter Home Winery. Berman’s clients are companies with vested interests in low employee wages; cheap, unhealthy restaurant-chain food, particularly meat; and tobacco, soft drink, and alcohol consumption—companies like Ruth’s Chris Steakhouse, Armour Swift, and Philip Morris, whose product line includes Kraft Foods and everything from Marlboro cigarettes to Oscar Meyer wieners and which is a major shareholder in its former subsidiary Miller Brewing, now known as SABMiller.
PETA’s recent successes in gaining fast-food industry concessions for more humane conditions for farm animals have sent ripples of fear through the food and beverage service industry. About the same time that McDonald’s buckled to PETA’s demands, Richard Berman changed his front group’s name and stepped up his attacks.
The key to Berman’s aggressive strategy is, in his own words, “to shoot the messenger ... we’ve got to attack their credibility as spokespersons,”—an interesting remark from someone whose background and funding so severely challenge his own credibility.
http://www.consumerdeception.com/index.asp
NOW, what about that Journal of Neurology article published by Singeltary ;
JOURNAL OF NEUROLOGY
MARCH 26, 2003
Send Post-Publication Peer Review to journal:
Re: RE-Monitoring the occurrence of emerging forms of Creutzfeldt-Jakob
disease in the United States
Email Terry S. Singeltary:
flounder@wt.net flounder9@verizon.net
I lost my mother to hvCJD (Heidenhain Variant CJD). I would like to comment on the CDC's attempts to monitor the occurrence of emerging forms of CJD. Asante, Collinge et al [1] have reported that BSE transmission to the 129-methionine genotype can lead to an alternate phenotype that is indistinguishable from type 2 PrPSc, the commonest sporadic CJD. However, CJD and all human TSEs are not reportable nationally. CJD and all human TSEs must be made reportable in every state and internationally. I hope that the CDC does not continue to expect us to still believe that the 85%+ of all CJD cases which are sporadic are all spontaneous, without route/source. We have many TSEs in the USA in both animal and man. CWD in deer/elk is spreading rapidly and CWD does transmit to mink, ferret, cattle, and squirrel monkey by intracerebral inoculation. With the known incubation periods in other TSEs, oral transmission studies of CWD may take much longer. Every victim/family of CJD/TSEs should be asked about route and source of this agent. To prolong this will only spread the agent and needlessly expose others. In light of the findings of Asante and Collinge et al, there should be drastic measures to safeguard the medical and surgical arena from sporadic CJDs and all human TSEs. I only ponder how many sporadic CJDs in the USA are type 2 PrPSc?
http://www.neurology.org/cgi/eletters/60/2/176#535
about sporadic CJD and BSE ;
CJD RISING SWITZERLAND
CJD is a predominantly sporadic disorder but can also occur as a dominantly inherited or infective condition. Only one of the 26 most recent confirmed cases was identified as carrying a disease related mutation of the PRNP gene, none had identifiable iatrogenic exposure, and none resembled variant CJD. Thus 25 of the 26 cases appear to be sporadic cases. Sporadic CJD is distributed worldwide with a reported incidence of about one in a million per year. Raised awareness of the disease in recent years could account for an increase in reported cases of CJD, although neither an increase in the average age of patients nor more frequent recognition of CJD amongst residents of nursing homes (where dementing illness is prevalent and misdiagnosis might be expected) were seen in the Swiss cases. Moreover, improved ascertainment as an explanation for the observed increase would imply levels of under-reporting in countries other than Switzerland, which appear implausible. The authors of the Lancet report suggest that the rise in cases might be due to some form of unidentified iatrogenic transmission or to exposure to a zoonotic source of infection, though cases do not resemble variant Creutzfeldt-Jakob disease (vCJD). The ongoing surveillance of CJD in Switzerland and the rest of Europe is essential to monitor the situation to see if this rise is sustained in Switzerland, and if a similar rise occurs in other countries (see http://www.eurocjd.ed.ac.uk).
http://www.eurosurveillance.org/ViewArticle.aspx?ArticleId=1921
Prion data suggest BSE link to sporadic CJD Declan Butler
Predicting the number of cases of Creutzfeldt-Jakob disease (CJD) in people as a result of transmission of bovine spongiform encephalopathy (BSE) has just got more difficult.Whereas it was thought that BSE only caused a new form of the disease called variant CJD (vCJD), a study in mice from a team led by John Collinge at University College London suggests that it may also cause a disease indistinguishable from the commonest form of classical, or 'sporadic', CJD...
http://www.nature.com/nature/journal/v420/n6915/full/420450a.html
Sent: Saturday, December 11, 2010 3:17 PM
Subject: Species-barrier-independent prion replication in apparently resistant species
Species-barrier-independent prion replication in apparently resistant species
Pertenece a: UCL University College London Eprints
Descripción: Transmission of prions between mammalian species is thought to be limited by a "species barrier," which depends on differences in the primary structure of prion proteins in the infecting inoculum and the host, Here we demonstrate that a strain of hamster prions thought to be nonpathogenic for conventional mice leads to prion replication to high levels in such mice but without causing clinical disease. Prions pathogenic in both mice and hamsters are produced. These results demonstrate the existence of subclinical forms of prion infection with important public health implications, both with respect to iatrogenic transmission from apparently healthy humans and dietary exposure to cattle and other species exposed to bovine spongiform encephalopathy prions, Current definitions of the species barrier, which have been based on clinical endpoints, need to be fundamentally reassessed.
Autor(es): Hill, AF - Joiner, S - Linehan, J - Desbruslais, M - Lantos, PL - Collinge, J -
Id.: 52395313
Versión: 1.0
Estado: Final
Palabras clave: TRANSMISSIBLE MINK ENCEPHALOPATHY, CREUTZFELDT - JAKOB - DISEASE, FATAL FAMILIAL INSOMNIA, STRAIN VARIATION, TRANSGENIC MICE, SCRAPIE INFECTIVITY, HAMSTER SCRAPIE, VARIANT CJD, BSE AGENT, PROTEIN -
Tipo de recurso: Article -
Tipo de Interactividad: Expositivo
Nivel de Interactividad: muy bajo
Audiencia: Estudiante - Profesor - Autor -
Estructura: Atomic
Coste: no
Copyright: sí
Requerimientos técnicos: Browser: Any -
Fecha de contribución: 10-dic-2010
Contacto:
http://biblioteca.universia.net/html_bura/ficha/params/id/52395313.html
for those interested, see more here with comments........
Saturday, December 11, 2010
Species-barrier-independent prion replication in apparently resistant species
http://transmissiblespongiformencephalopathy.blogspot.com/2010/12/species-barrier-independent-prion.html
Thursday, November 18, 2010
UNITED STATES OF AMERICA VS GALEN J. NIEHUES FAKED MAD COW FEED TEST ON 92 BSE INSPECTION REPORTS FOR APPROXIMATELY 100 CATTLE OPERATIONS
http://bse-atypical.blogspot.com/2010/11/united-states-of-america-vs-galen-j.html
Wednesday, December 22, 2010
Manitoba veterinarian has been fined $10,000 for falsifying certification documents for U.S. bound cattle and what about mad cow disease ?
http://usdameatexport.blogspot.com/2010/12/manitoba-veterinarian-has-been-fined.html
Tuesday, November 02, 2010
BSE - ATYPICAL LESION DISTRIBUTION (RBSE 92-21367) statutory (obex only) diagnostic criteria CVL 1992
http://bse-atypical.blogspot.com/2010/11/bse-atypical-lesion-distribution-rbse.html
Monday, November 22, 2010
Atypical transmissible spongiform encephalopathies in ruminants: a challenge for disease surveillance and control
REVIEW ARTICLES
http://transmissiblespongiformencephalopathy.blogspot.com/2010/11/atypical-transmissible-spongiform.html
Thursday, November 18, 2010
Increased susceptibility of human-PrP transgenic mice to bovine spongiform encephalopathy following passage in sheep
http://bse-atypical.blogspot.com/2010/11/increased-susceptibility-of-human-prp.html
Seven main threats for the future linked to prions
The NeuroPrion network has identified seven main threats for the future linked to prions.
First threat
The TSE road map defining the evolution of European policy for protection against prion diseases is based on a certain numbers of hypotheses some of which may turn out to be erroneous. In particular, a form of BSE (called atypical Bovine Spongiform Encephalopathy), recently identified by systematic testing in aged cattle without clinical signs, may be the origin of classical BSE and thus potentially constitute a reservoir, which may be impossible to eradicate if a sporadic origin is confirmed.
*** Also, a link is suspected between atypical BSE and some apparently sporadic cases of Creutzfeldt-Jakob disease in humans. These atypical BSE cases constitute an unforeseen first threat that could sharply modify the European approach to prion diseases.
http://www.neuroprion.org/en/np-neuroprion.html
Thursday, August 12, 2010
Seven main threats for the future linked to prions
http://prionpathy.blogspot.com/2010/08/seven-main-threats-for-future-linked-to.html
http://prionpathy.blogspot.com/
AS implied in the Inset 25 we must not _ASSUME_ that transmission of BSE to other species will invariably present pathology typical of a scrapie-like disease.
snip...
http://collections.europarchive.org/tna/20080102185948/http://www.bseinquiry.gov.uk/files/yb/1991/01/04004001.pdf
Sunday, November 28, 2010
Variably protease-sensitive prionopathy in a PRNP codon 129 heterozygous UK patient with co-existing tau, a synuclein and AB pathology
http://prionopathy.blogspot.com/2010/11/variably-protease-sensitive-prionopathy.html
what about that sheep scrapie, and how the feds so freely said that sheep scrapie has and would never transmit to humans......well, think again. ...terry
Thursday, November 18, 2010
Increased susceptibility of human-PrP transgenic mice to bovine spongiform encephalopathy following passage in sheep
http://bse-atypical.blogspot.com/2010/11/increased-susceptibility-of-human-prp.html
Sunday, December 12, 2010
EFSA reviews BSE/TSE infectivity in small ruminant tissues News Story 2 December 2010
http://transmissiblespongiformencephalopathy.blogspot.com/2010/12/efsa-reviews-bsetse-infectivity-in.html
Tuesday, March 16, 2010
COMMONWEALTH OF AUSTRALIA Hansard Import restrictions on beef FRIDAY, 5 FEBRUARY 2010 AUSTRALIA
COMMONWEALTH OF AUSTRALIA
Proof Committee Hansard
RRA&T 2 Senate Friday, 5 February 2010
RURAL AND REGIONAL AFFAIRS AND TRANSPORT
[9.03 am]
BELLINGER, Mr Brad, Chairman, Australian Beef Association
CARTER, Mr John Edward, Director, Australian Beef Association
CHAIR—Welcome. Would you like to make an opening statement?
Mr Bellinger—Thank you. The ABA stands by its submission, which we made on 14 December last year, that the decision made by the government to allow the importation of beef from BSE affected countries is politically based, not science based. During this hearing we will bring forward compelling new evidence to back up this statement. When I returned to my property after the December hearing I received a note from an American citizen. I will read a small excerpt from the mail he sent me in order to reinforce the dangers of allowing the importation of beef from BSE affected countries. I have done a number of press releases on this topic, and this fellow has obviously picked my details up from the internet. His name is Terry Singeltary and he is from Bacliff, Texas. He states, and rightfully so:
You should be worried. Please let me explain. I’ve kept up with the mad cow saga for 12 years today, on December 14th 1997, some four months post voluntary and partial mad cow feed ban in the USA, I lost my mother to the Heidenhain variant Creutzfeldt-Jakob disease (CJD). I know this is just another phenotype of the infamous sporadic CJDs. Here in the USA, when USA sheep scrapie was transmitted to USA bovine, the agent was not UK BSE—it was a different strain. So why then would human TSE from USA cattle look like UK CJD from UK BSE? It would not. So this accentuates that the science is inconclusive still on this devastating disease. He goes on to state:
The OIE— the International Organisation of Epizootics, the arm of the WTO— is a failed global agent that in my opinion is bought off via bogus regulations for global trade and industry reps. I have done this all these years for nothing but the truth. I am a consumer, I eat meat, but I do not have to sit idly by and see the ignorance and greed of it all while countless numbers of humans and animals are being exposed to the TSE agents. All the USA is interested in is trade, nothing else matters.
Even Dr Stanley Prusiner, who incidentally won the Nobel Health Prize in 1997 for his work on the prion—he invented the word ‘prion’, or it came from him—states:
snip...see full text 110 pages ;
http://www.aph.gov.au/hansard/senate/commttee/S12742.pdf
for those interested, please see much more here ;
http://docket-aphis-2006-0041.blogspot.com/2010/03/commonwealth-of-australia-hansard.html
http://transmissiblespongiformencephalopathy.blogspot.com/2010/02/transmissible-spongiform-encephalopathy.html
Tuesday, July 13, 2010
(SEE BEEF PRODUCTS EXPORTED TO AUSTRALIA FROM USA...TSS)
AUSTRALIAN QUESTIONNAIRE TO ASSESS BSE RISK (OIE) Terrestrial Animal Health Code, 2009 and USA export risk factor for BSE to Australia
http://usdameatexport.blogspot.com/2010/07/australian-questionnaire-to-assess-bse.html
Saturday, August 14, 2010
USA NON-SPECIES CODING SYSTEM (BEEF IMPORT EXPORT BSE RISK THERE FROM)
US denies it's illegally sending beef to Australia ?
Friday, 13/08/2010
http://usdameatexport.blogspot.com/2010/08/usa-non-species-coding-system-beef.html
Saturday, June 19, 2010
U.S. DENIED UPGRADED BSE STATUS FROM OIE
http://usdameatexport.blogspot.com/2010/06/us-denied-upgraded-bse-status-from-oie.html
Sunday, August 15, 2010
ATYPICAL BSE NOW LINKED TO CAUSING SPORADIC CJD OVERSEAS Commonwealth of Australia
http://bse-atypical.blogspot.com/2010/08/atypical-bse-now-linked-to-causing.html
Tuesday, January 5, 2010
JOINT STATEMENT FROM USTR, USDA ON TAIWAN'S ACTIONS TO UNJUSTIFIABLY RESTRICT U.S. BEEF IMPORTS IN VIOLATION OF OUR BILATERAL AGREEMENT Release No. 0002.10 Contact: USTR, Nefeterius McPherson (202) 395-3230 USDA, Caleb Weaver (202) 720-4623
http://usdavskorea.blogspot.com/2010/01/joint-statement-from-ustr-usda-on.html
2010
Dear Mr Singeltary,
We would very much like to interview you about the 7 main threats for the future linked to prions for our program series !
is an internet and satellite television station broadcasting globally all news positive and constructive to the world 24 hours/day 7 days /week
It broadcasts in 40+ languages and has a potential viewing audience of 4 billion + world wide
If you are agreeable, would you be available the afternoon of Sunday October 3rd ? We would be driving from Houston. It takes 1 hour for the camera men to set up and then the interview lasts approximately 1 and 1/2 hours.
snip...
"Dear Houston center,
Would you please contact this person for an interview?
Guest : Terry Singeltary
"My mother was murdered by what I call corporate and political homicide i.e. FOR PROFIT! she died from a rare phenotype of CJD i.e. the Heidenhain Variant of Creutzfeldt Jakob Disease i.e. sporadic, simply meaning from unknown route and source. I have simply been trying to validate her death DOD 12/14/97 with the truth."
http://prionpathy.blogspot.com/2010/08/seven-main-threats-for-future-linked-to.html
http://www.blogger.com/profile/06986622967539963260
So the interview is to raise the awareness of the general public to this very real risk of prion disease.
The interview would be from the angle of your own personal experience /personal research and advocacy.
Wishing you all the very best with your upcoming surgery!
snip...Taiwan...end...TSS
Friday, April 02, 2010 U.S.
beef trade talks to continue but curbs to remain: Japan
http://bse-atypical.blogspot.com/2010/04/us-beef-trade-talks-to-continue-but.html
Even McDonald’s, an international business symbolic of American culture, advertises that it uses only “pure Australian beef” in South Korea. Burger King announced that it only uses beef from Australia and New Zealand. Why? Even famous brands like McDonald’s cannot survive if they are perceived as using unsafe ingredients. They know that Koreans still do not trust the safety of American beef and must distance their brands from American beef.
Therefore the U.S. should aim to export only the best quality beef to Korea and regain the Korean people’s trust. Regaining Koreans’ confidence in U.S. beef will be a long-term gain for many American industries seeking to access the 12th largest economy in the world.
How will we know that U.S. beef has regained trust in South Korea? When McDonald’s in South Korea announces it uses “pure American beef.”
Kwon Seung-woo, a professor at Korea University Business School
http://joongangdaily.joins.com/article/view.asp?aid=2928098
hmmmm, let's see just what the BIG MAC himself had to say ;
Wednesday, November 10, 2010
McDonald's and USA BSE aka mad cow disease McDonald's AND Seriologicals USA NOT PROTECTED FROM MAD COW
http://bse-atypical.blogspot.com/2010/11/mcdonalds-and-usa-bse-aka-mad-cow.html
Atypical BSE in Cattle
BSE has been linked to the human disease variant Creutzfeldt Jakob Disease (vCJD). The known exposure pathways for humans contracting vCJD are through the consumption of beef and beef products contaminated by the BSE agent and through blood transfusions. However, recent scientific evidence suggests that the BSE agent may play a role in the development of other forms of human prion diseases as well. These studies suggest that classical type of BSE may cause type 2 sporadic CJD and that H-type atypical BSE is connected with a familial form of CJD.
To date the OIE/WAHO assumes that the human and animal health standards set out in the BSE chapter for classical BSE (C-Type) applies to all forms of BSE which include the H-type and L-type atypical forms. This assumption is scientifically not completely justified and accumulating evidence suggests that this may in fact not be the case. Molecular characterization and the spatial distribution pattern of histopathologic lesions and immunohistochemistry (IHC) signals are used to identify and characterize atypical BSE. Both the L-type and H-type atypical cases display significant differences in the conformation and spatial accumulation of the disease associated prion protein (PrPSc) in brains of afflicted cattle. Transmission studies in bovine transgenic and wild type mouse models support that the atypical BSE types might be unique strains because they have different incubation times and lesion profiles when compared to C-type BSE. When L-type BSE was inoculated into ovine transgenic mice and Syrian hamster the resulting molecular fingerprint had changed, either in the first or a subsequent passage, from L-type into C-type BSE. In addition, non-human primates are specifically susceptible for atypical BSE as demonstrated by an approximately 50% shortened incubation time for L-type BSE as compared to C-type. Considering the current scientific information available, it cannot be assumed that these different BSE types pose the same human health risks as C-type BSE or that these risks are mitigated by the same protective measures.
snip...see full text ;
http://www.prionetcanada.ca/detail.aspx?menu=5&dt=293380&app=93&cat1=387&tp=20&lk=no&cat2
14th ICID International Scientific Exchange Brochure -
Final Abstract Number: ISE.114
Session: International Scientific Exchange
Transmissible Spongiform encephalopathy (TSE) animal and human TSE in North America update October 2009
T. Singeltary
Bacliff, TX, USA
Background:
An update on atypical BSE and other TSE in North America. Please remember, the typical U.K. c-BSE, the atypical l-BSE (BASE), and h-BSE have all been documented in North America, along with the typical scrapie's, and atypical Nor-98 Scrapie, and to date, 2 different strains of CWD, and also TME. All these TSE in different species have been rendered and fed to food producing animals for humans and animals in North America (TSE in cats and dogs ?), and that the trading of these TSEs via animals and products via the USA and Canada has been immense over the years, decades.
Methods:
12 years independent research of available data
Results:
I propose that the current diagnostic criteria for human TSEs only enhances and helps the spreading of human TSE from the continued belief of the UKBSEnvCJD only theory in 2009. With all the science to date refuting it, to continue to validate this old myth, will only spread this TSE agent through a multitude of potential routes and sources i.e. consumption, medical i.e., surgical, blood, dental, endoscopy, optical, nutritional supplements, cosmetics etc.
Conclusion:
I would like to submit a review of past CJD surveillance in the USA, and the urgent need to make all human TSE in the USA a reportable disease, in every state, of every age group, and to make this mandatory immediately without further delay. The ramifications of not doing so will only allow this agent to spread further in the medical, dental, surgical arena's. Restricting the reporting of CJD and or any human TSE is NOT scientific. Iatrogenic CJD knows NO age group, TSE knows no boundaries. I propose as with Aguzzi, Asante, Collinge, Caughey, Deslys, Dormont, Gibbs, Gajdusek, Ironside, Manuelidis, Marsh, et al and many more, that the world of TSE Transmissible Spongiform Encephalopathy is far from an exact science, but there is enough proven science to date that this myth should be put to rest once and for all, and that we move forward with a new classification for human and animal TSE that would properly identify the infected species, the source species, and then the route.
page 114 ;
http://ww2.isid.org/Downloads/14th_ICID_ISE_Abstracts.pdf
To date the OIE/WAHO assumes that the human and animal health standards set out in the BSE chapter for classical BSE (C-Type) applies to all forms of BSE which include the H-type and L-type atypical forms. This assumption is scientifically not completely justified and accumulating evidence suggests that this may in fact not be the case. Molecular characterization and the spatial distribution pattern of histopathologic lesions and immunohistochemistry (IHC) signals are used to identify and characterize atypical BSE. Both the L-type and H-type atypical cases display significant differences in the conformation and spatial accumulation of the disease associated prion protein (PrPSc) in brains of afflicted cattle. Transmission studies in bovine transgenic and wild type mouse models support that the atypical BSE types might be unique strains because they have different incubation times and lesion profiles when compared to C-type BSE. When L-type BSE was inoculated into ovine transgenic mice and Syrian hamster the resulting molecular fingerprint had changed, either in the first or a subsequent passage, from L-type into C-type BSE. In addition, non-human primates are specifically susceptible for atypical BSE as demonstrated by an approximately 50% shortened incubation time for L-type BSE as compared to C-type. Considering the current scientific information available, it cannot be assumed that these different BSE types pose the same human health risks as C-type BSE or that these risks are mitigated by the same protective measures.
http://www.prionetcanada.ca/detail.aspx?menu=5&dt=293380&app=93&cat1=387&tp=20&lk=no&cat2
Wednesday, March 31, 2010
Atypical BSE in Cattle
http://bse-atypical.blogspot.com/2010/03/atypical-bse-in-cattle-position-post.html
UPDATED DATA ON 2ND CWD STRAIN
Wednesday, September 08, 2010
CWD PRION CONGRESS SEPTEMBER 8-11 2010
http://chronic-wasting-disease.blogspot.com/2010/09/cwd-prion-2010.html
PRION 2010 Meeting Report International Prion Congress: From agent to disease; September 8–11, 2010; Salzburg, Austria Volume 4, Issue 3 July/August/September 2010
http://www.landesbioscience.com/journals/prion/article/12764/
THIS FDA recall for CWD positive product in commerce, was NOT done for the welfare of the dead CWD postive elk. ...TSS
Wednesday, March 18, 2009
Noah's Ark Holding, LLC, Dawson, MN RECALL Elk products contain meat derived from an elk confirmed to have CWD NV, CA, TX, CO, NY, UT, FL, OK RECALLS AND FIELD CORRECTIONS: FOODS CLASS II
RECALLS AND FIELD CORRECTIONS: FOODS CLASS II
___________________________________
PRODUCT a) Elk Meat, Elk Tenderloin, Frozen in plastic vacuum packaging. Each package is approximately 2 lbs., and each case is approximately 16 lbs.; Item number 755125, Recall # F-129-9;
b) Elk Meat, Elk Trim, Frozen; Item number 755155, Recall # F-130-9;
c) Elk Meat, French Rack, Chilled. Item number 755132, Recall # F-131-9;
d) Elk Meat, Nude Denver Leg. Item number 755122, Recall # F-132-9;
e) Elk Meat, New York Strip Steak, Chilled. Item number 755128, Recall # F-133-9;
f) Elk Meat, Flank Steak Frozen. Item number 755131, Recall # F-134-9; CODE Elk Meats with production dates of December 29, 30, and 31
RECALLING FIRM/MANUFACTURER
Recalling Firm: Sierra Meats, Reno, NV, by telephone on January 29, 2009 and press release on February 9, 2009. Manufacturer: Noah’s Ark Holding, LLC, Dawson, MN. Firm initiated recall is ongoing.
REASON
Elk products contain meat derived from an elk confirmed to have Chronic Wasting Disease (CWD).
VOLUME OF PRODUCT IN COMMERCE Unknown
DISTRIBUTION NV, CA, TX, CO, NY, UT, FL, OK
http://www.fda.gov/Safety/Recalls/EnforcementReports/ucm154840.htm
Sunday, April 12, 2009
CWD UPDATE Infection Studies in Two Species of Non-Human Primates and one Environmental reservoir infectivity study and evidence of two strains
snip...
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
To: [log in to unmask]">[log in to unmask]; [log in to unmask]">[log in to unmask]; [log in to unmask]">[log in to unmask]
Subject: TO CDC AND NIH - PUB MED- 3 MORE DEATHS - CWD - YOUNG HUNTERS
Sunday, November 10, 2002 6:26 PM ......snip........end..............TSS
snip...
full text ;
http://chronic-wasting-disease.blogspot.com/2009/02/exotic-meats-usa-announces-urgent.html
http://chronic-wasting-disease.blogspot.com/2009/03/noahs-ark-holding-llc-dawson-mn-recall.html
see full text ;
http://chronic-wasting-disease.blogspot.com/2009/04/cwd-update-infection-studies-in-two.html
Tuesday, February 09, 2010
Chronic Wasting Disease: Surveillance Update North America: February 2010
>>> In addition, we documented horizontal transmission of CWD from inoculated mice and to un-inoculated cohabitant cage-mates. <<<
http://ajp.amjpathol.org/cgi/content/abstract/ajpath.2010.090710v1
http://chronic-wasting-disease.blogspot.com/2010/02/chronic-wasting-disease-surveillance.html
There are now two documented strains of CWD, and science is showing that indeed CWD could transmit to humans via transmission studies ;
PPo3-7:
Prion Transmission from Cervids to Humans is Strain-dependent
Qingzhong Kong, Shenghai Huang,*Fusong Chen, Michael Payne, Pierluigi Gambetti and Liuting Qing Department of Pathology; Case western Reserve University; Cleveland, OH USA *Current address: Nursing Informatics; Memorial Sloan-Kettering Cancer Center; New York, NY USA
Key words: CWD, strain, human transmission
Chronic wasting disease (CWD) is a widespread prion disease in cervids (deer and elk) in North America where significant human exposure to CWD is likely and zoonotic transmission of CWD is a concern. Current evidence indicates a strong barrier for transmission of the classical CWD strain to humans with the PrP-129MM genotype. A few recent reports suggest the presence of two or more CWD strains. What remain unknown is whether individuals with the PrP-129VV/MV genotypes are also resistant to the classical CWD strain and whether humans are resistant to all natural or adapted cervid prion strains. Here we report that a human prion strain that had adopted the cervid prion protein (PrP) sequence through passage in cervidized transgenic mice efficiently infected transgenic mice expressing human PrP, indicating that the species barrier from cervid to humans is prion strain-dependent and humans can be vulnerable to novel cervid prion strains. Preliminary results on CWD transmission in transgenic mice expressing human PrP-129V will also be discussed.
Acknowledgement Supported by NINDS NS052319 and NIA AG14359.
PPo2-27:
Generation of a Novel form of Human PrPSc by Inter-species Transmission of Cervid Prions
Marcelo A. Barria,1 Glenn C. Telling,2 Pierluigi Gambetti,3 James A. Mastrianni4 and Claudio Soto1 1Mitchell Center for Alzheimer's disease and related Brain disorders; Dept of Neurology; University of Texas Houston Medical School; Houston, TX USA; 2Dept of Microbiology, Immunology & Molecular Genetics and Neurology; Sanders Brown Center on Aging; University of Kentucky Medical Center; Lexington, KY USA; 3Institute of Pathology; Case western Reserve University; Cleveland, OH USA; 4Dept of Neurology; University of Chicago; Chicago, IL USA
Prion diseases are infectious neurodegenerative disorders affecting humans and animals that result from the conversion of normal prion protein (PrPC) into the misfolded and infectious prion (PrPSc). Chronic wasting disease (CWD) of cervids is a prion disorder of increasing prevalence within the United States that affects a large population of wild and captive deer and elk. CWD is highly contagious and its origin, mechanism of transmission and exact prevalence are currently unclear. The risk of transmission of CWD to humans is unknown. Defining that risk is of utmost importance, considering that people have been infected by animal prions, resulting in new fatal diseases. To study the possibility that human PrPC can be converted into the infectious form by CWD PrPSc we performed experiments using the Protein Misfolding Cyclic Amplification (PMCA) technique, which mimic in vitro the process of prion replication. Our results show that cervid PrPSc can induce the pathological conversion of human PrPC, but only after the CWD prion strain has been stabilized by successive passages in vitro or in vivo. Interestingly, this newly generated human PrPSc exhibits a distinct biochemical pattern that differs from any of the currently known forms of human PrPSc, indicating that it corresponds to a novel human prion strain. Our findings suggest that CWD prions have the capability to infect humans, and that this ability depends on CWD strain adaptation, implying that the risk for human health progressively increases with the spread of CWD among cervids.
PPo2-7:
Biochemical and Biophysical Characterization of Different CWD Isolates
Martin L. Daus and Michael Beekes Robert Koch Institute; Berlin, Germany
Key words: CWD, strains, FT-IR, AFM
Chronic wasting disease (CWD) is one of three naturally occurring forms of prion disease. The other two are Creutzfeldt-Jakob disease in humans and scrapie in sheep. CWD is contagious and affects captive as well as free ranging cervids. As long as there is no definite answer of whether CWD can breach the species barrier to humans precautionary measures especially for the protection of consumers need to be considered. In principle, different strains of CWD may be associated with different risks of transmission to humans. Sophisticated strain differentiation as accomplished for other prion diseases has not yet been established for CWD. However, several different findings indicate that there exists more than one strain of CWD agent in cervids. We have analysed a set of CWD isolates from white-tailed deer and could detect at least two biochemically different forms of disease-associated prion protein PrPTSE. Limited proteolysis with different concentrations of proteinase K and/or after exposure of PrPTSE to different pH-values or concentrations of Guanidinium hydrochloride resulted in distinct isolate-specific digestion patterns. Our CWD isolates were also examined in protein misfolding cyclic amplification studies. This showed different conversion activities for those isolates that had displayed significantly different sensitivities to limited proteolysis by PK in the biochemical experiments described above. We further applied Fourier transform infrared spectroscopy in combination with atomic force microscopy. This confirmed structural differences in the PrPTSE of at least two disinct CWD isolates. The data presented here substantiate and expand previous reports on the existence of different CWD strains.
http://www.prion2010.org/bilder/prion_2010_program_latest_w_posters_4_.pdf?139&PHPSESSID=a30a38202cfec579000b77af81be3099
UPDATED DATA ON 2ND CWD STRAIN
Wednesday, September 08, 2010
CWD PRION CONGRESS SEPTEMBER 8-11 2010
http://chronic-wasting-disease.blogspot.com/2010/09/cwd-prion-2010.html
http://chronic-wasting-disease.blogspot.com/
P35
ADAPTATION OF CHRONIC WASTING DISEASE (CWD) INTO HAMSTERS, EVIDENCE OF A WISCONSIN STRAIN OF CWD
Chad Johnson1, Judd Aiken2,3,4 and Debbie McKenzie4,5 1 Department of Comparative Biosciences, University of Wisconsin, Madison WI, USA 53706 2 Department of Agriculture, Food and Nutritional Sciences, 3 Alberta Veterinary Research Institute, 4.Center for Prions and Protein Folding Diseases, 5 Department of Biological Sciences, University of Alberta, Edmonton AB, Canada T6G 2P5
The identification and characterization of prion strains is increasingly important for the diagnosis and biological definition of these infectious pathogens. Although well-established in scrapie and, more recently, in BSE, comparatively little is known about the possibility of prion strains in chronic wasting disease (CWD), a disease affecting free ranging and captive cervids, primarily in North America. We have identified prion protein variants in the white-tailed deer population and demonstrated that Prnp genotype affects the susceptibility/disease progression of white-tailed deer to CWD agent. The existence of cervid prion protein variants raises the likelihood of distinct CWD strains. Small rodent models are a useful means of identifying prion strains. We intracerebrally inoculated hamsters with brain homogenates and phosphotungstate concentrated preparations from CWD positive hunter-harvested (Wisconsin CWD endemic area) and experimentally infected deer of known Prnp genotypes. These transmission studies resulted in clinical presentation in primary passage of concentrated CWD prions. Subclinical infection was established with the other primary passages based on the detection of PrPCWD in the brains of hamsters and the successful disease transmission upon second passage. Second and third passage data, when compared to transmission studies using different CWD inocula (Raymond et al., 2007) indicate that the CWD agent present in the Wisconsin white-tailed deer population is different than the strain(s) present in elk, mule-deer and white-tailed deer from the western United States endemic region.
http://www.istitutoveneto.it/prion_09/Abstracts_09.pdf
Wednesday, November 17, 2010
CWD Update 98 November 10, 2010
http://chronic-wasting-disease.blogspot.com/2010/11/cwd-update-98-november-10-2010.html
http://chronic-wasting-disease.blogspot.com/
yep, but the SECOND passage was especially a doozy, and remember, oral transmission will take much longer than intracerebral route, and we now have two documented strains of cwd i.e. the regular strain of cwd (whatever the hell that means), and the Wisconsin strain, with probably more in the pipeline. NOW, THE MILLION DOLLAR QUESTION, WAS THE WISCONSIN CWD STRAIN INCLUDED IN THE ORAL TRANSMISSION STUDY ?
also, cwd has been transmitted to deer mice (Peromyscus maniculatus), white-footed mice (P. leucopus), meadow voles (Microtus pennsylvanicus), and red-backed voles (Myodes gapperi).
considering scrapie, over 20 regular strains, with the atypical NOR-98, TWO documented TME strains i.e. hyper and drowsy, c-BSE, h-BSE, l-BSE, all in North America, all of which have been rendered and fed to animals for human and animal food..............terry
Title: Experimental Second Passage of Chronic Wasting Disease (Cwd(mule Deer)) Agent to Cattle
Authors
Hamir, Amirali Kunkle, Robert Miller, Janice - ARS RETIRED Greenlee, Justin Richt, Juergen
Submitted to: Journal of Comparative Pathology Publication Type: Peer Reviewed Journal Publication Acceptance Date: July 25, 2005 Publication Date: January 1, 2006 Citation: Hamir, A.N., Kunkle, R.A., Miller, J.M., Greenlee, J.J., Richt, J.A. 2006. Experimental second passage of chronic wasting disease (CWD(mule deer)) agent to cattle. Journal of Comparative Pathology. 134(1):63-69.
Interpretive Summary: To compare the findings of experimental first and second passage of chronic wasting disease (CWD) in cattle, 6 calves were inoculated into the brain with CWD-mule deer agent previously (first) passaged in cattle. Two other uninoculated calves served as controls. Beginning 10-12 months post inoculation (PI), all inoculates lost appetite and weight. Five animals subsequently developed clinical signs of central nervous system (CNS) abnormality. By 16.5 months PI, all cattle had been euthanized because of poor prognosis. None of the animals showed microscopic lesions of spongiform encephalopathy (SE) but the CWD agent was detected in their CNS tissues by 2 laboratory techniques (IHC and WB). These findings demonstrate that inoculated cattle amplify CWD agent but also develop clinical CNS signs without manifestation of microscopic lesions of SE. This situation has also been shown to occur following inoculation of cattle with another TSE agent, namely, sheep scrapie. The current study confirms previous work that indicates that the diagnostic tests currently used for confirmation of bovine spongiform encephalopathy (BSE) in the U.S. would detect CWD in cattle, should it occur naturally. Furthermore, it raises the possibility of distinguishing CWD from BSE in cattle due to the absence of microscopic lesions and a unique multifocal distribution of PrPres, as demonstrated by IHC, which in this study, appears to be more sensitive than the WB. Technical Abstract: To compare clinicopathological findings of first and second passage of chronic wasting disease (CWD) in cattle, a group of calves (n=6) were intracerebrally inoculated with CWD-mule deer agent previously (first) passaged in cattle. Two other uninoculated calves served as controls. Beginning 10-12 months post inoculation (PI), all inoculates lost appetite and lost weight. Five animals subsequently developed clinical signs of central nervous system (CNS) abnormality. By 16.5 months PI, all cattle had been euthanized because of poor prognosis. None of the animals showed microscopic lesions of spongiform encephalopathy (SE) but PrPres was detected in their CNS tissues by immunohistochemistry (IHC) and Western blot (WB) techniques. These findings demonstrate that intracerebrally inoculated cattle not only amplify CWD PrPres but also develop clinical CNS signs without manifestation of morphologic lesions of SE. This situation has also been shown to occur following inoculation of cattle with another TSE agent, scrapie. The current study confirms previous work that indicates the diagnostic techniques currently used for confirmation of bovine spongiform encephalopathy (BSE) in the U.S. would detect CWD in cattle, should it occur naturally. Furthermore, it raises the possibility of distinguishing CWD from BSE in cattle due to the absence of neuropathologic lesions and a unique multifocal distribution of PrPres, as demonstrated by IHC, which in this study, appears to be more sensitive than the WB.
http://www.ars.usda.gov/research/publications/publications.htm?SEQ_NO_115=178318
PLUS, oral transmission between cervids, either infected carcases AND ESPECIALLY FEED THAT HAS ANIMAL PROTEIN, PLEASE SEE ;
PRODUCT Custom deer feed made for a Wisconsin farm. The product was in bags holding about 40 pounds each. Recall # V-122-4. CODE 1-30-04 on the product invoice and mixing record. RECALLING FIRM/MANUFACTURER Crivitz Feed Mill, Crivitz, WI, by telephone on February 20, 2004. Wisconsin State initiated recall is complete. REASON The recalled deer feed contained steamed bone meal which is prohibited material in feed for ruminants.
VOLUME OF PRODUCT IN COMMERCE 515 pounds.
DISTRIBUTION WI.
END OF ENFORCEMENT REPORT FOR APRIL 7, 2004
###
http://www.fda.gov/bbs/topics/enforce/2004/ENF00842.html
Monday, August 9, 2010
National Prion Disease Pathology Surveillance Center Cases Examined (July 31, 2010)
(please watch and listen to the video and the scientist speaking about atypical BSE and sporadic CJD and listen to Professor Aguzzi)
SEE where sporadic cjd in the USA went from 59 cases in 1997, to 216 cases in 2009. a steady increase since 1997. ...TSS
National Prion Disease Pathology Surveillance Center Cases Examined (July 31, 2010)
Year Total Referrals2 Prion Disease Sporadic Familial Iatrogenic vCJD
1997 114 68 59 9 0 0
to
2009 425 259 216 43 0 0
http://www.cjdsurveillance.com/pdf/case-table.pdf
see full text ;
http://prionunitusaupdate2008.blogspot.com/2010/08/national-prion-disease-pathology.html
2010
PLEASE NOTE REFERENCE LINES 5. AND 6. AT BOTTOM ;
Monday, August 9, 2010
National Prion Disease Pathology Surveillance Center Cases Examined (July 31, 2010) Year Total Referrals2 Prion Disease Sporadic Familial Iatrogenic vCJD
1996 & earlier 51 33 28 5 0 0
1997 114 68 59 9 0 0
1998 88 52 44 7 1 0
1999 120 72 64 8 0 0
2000 146 103 89 14 0 0
2001 209 119 109 10 0 0
2002 248 149 125 22 2 0
2003 274 176 137 39 0 0
2004 325 186 164 21 0 1(3)
2005 344 194 157 36 1 0
2006 383 197 166 29 0 2(4)
2007 377 214 187 27 0 0
2008 394 231 204 25 0 0
2009 425 259 216 43 0 0
2010 204 124 85 20 0 0
TOTAL 3702(5) 2177(6) 1834 315 4 3
1 Listed based on the year of death or, if not available, on year of referral;
2 Cases with suspected prion disease for which brain tissue and/or blood (in familial cases) were submitted;
3 Disease acquired in the United Kingdom;
4 Disease was acquired in the United Kingdom in one case and in Saudi Arabia in the other case;
5 Includes 16 cases in which the diagnosis is pending, and 18 inconclusive cases;
6 Includes 21 (19 from 2010) cases with type determination pending in which the diagnosis of vCJD has been excluded.
http://www.cjdsurveillance.com/pdf/case-table.pdf
Tuesday, December 14, 2010
Infection control of CJD, vCJD and other human prion diseases in healthcare and community settings part 4, Annex A1, Annex J, UPDATE DECEMBER 2010
http://creutzfeldt-jakob-disease.blogspot.com/2010/12/infection-control-of-cjd-vcjd-and-other.html
Tuesday, December 14, 2010 TAFS1
Position Paper on Relaxation of the Feed Ban in the EU SUMMARY © TAFS, Berne, 2010
http://transmissiblespongiformencephalopathy.blogspot.com/2010/12/tafs1-position-paper-on-relaxation-of.html
Saturday, December 18, 2010
OIE Global Conference on Wildlife Animal Health and Biodiversity - Preparing for the Future (TSE AND PRIONS) Paris (France), 23-25 February 2011
http://transmissiblespongiformencephalopathy.blogspot.com/2010/12/oie-global-conference-on-wildlife.html
Merry Christmas..............PEACE !
kindest regards, terry
Terry S. Singeltary Sr. P.O. Box 42 Bacliff, Texas USA 77518
Thursday, December 23, 2010
Monday, November 22, 2010
Alzheimer's Dementia U.S. News Man, 88, kills wife in Calif. nursing home
U.S. News Man, 88, kills wife in Calif. nursing home
Published: Nov. 22, 2010 at 9:57 AM
SEAL BEACH, Calif., Nov. 22 (UPI) -- A man who had long cared for his ailing wife, whose "mind was gone," ended 70 years of marriage by shooting her in a nursing home, their daughter said.
Roy Charles Laird, 88, killed his wife Clara, 86, Sunday with a single gunshot to the head at the Country Villa Health Care Center in Seal Beach, police told the Los Angeles Times.
"It was a mercy killing," said their daughter, Kathy Palmateer, 68. "Her mind was gone."
As Clara Laird declined steadily from dementia over five years, her husband cared for her himself at home until three months ago. He would visit her at the nursing home three times a day, spoon-feeding her at each meal, friends and family said.
Around noon Sunday, a single gunshot was heard at the nursing home. Within minutes, police surrounded it and called in backup.
"We didn't know if we had a shooter or not," said Seal Beach police Sgt. Steve Bowles.
Police found Clara Laird dead in her bed and her husband in the hallway. He followed them into her room, took a .38-caliber revolver out of his pocket and calmly set it on a table, Bowles said.
Laird was arrested on suspicion of murder.
http://www.upi.com/Top_News/US/2010/11/22/Man-88-kills-wife-in-Calif-nursing-home/UPI-65541290437876/
God bless his soul, and may they both rest in peace. he will not last long now, because his soul died too. Alzheimer's, Prion disease, Dementia, and all neurological disease are truly a nightmare. If you have never witnessed the demise and death of a person from this, long term, or short, then you really should not persecute this man.
AS a layperson, and as someone that has witnessed the demise and death of a close loved one to hvCJD and Alzheimer's, it is a cruel, brutal death, and the loved ones and friends that care for them, a part of them die as well, and you never forget.
I do not condone, or approve of this man choice to end the brutal clutches of Alzheimer's that had a hold of his wife, but i have been there before. ...
BSE101/1 0136
IN CONFIDENCE
CMO
From: Dr J S Metters DCMO
4 November 1992
TRANSMISSION OF ALZHEIMER TYPE PLAQUES TO PRIMATES
http://collections.europarchive.org/tna/20081106170650/http://www.bseinquiry.gov.uk/files/yb/1992/11/04001001.pdf
CJD1/9 0185
Ref: 1M51A
IN STRICT CONFIDENCE
From: Dr. A Wight
Date: 5 January 1993
Copies:
Dr Metters
Dr Skinner
Dr Pickles
Dr Morris
Mr Murray
TRANSMISSION OF ALZHEIMER-TYPE PLAQUES TO PRIMATES
http://collections.europarchive.org/tna/20080102191246/http://www.bseinquiry.gov.uk/files/yb/1993/01/05004001.pdf
Friday, September 3, 2010
Alzheimer's, Autism, Amyotrophic Lateral Sclerosis, Parkinson's, Prionoids, Prionpathy, Prionopathy, TSE
http://betaamyloidcjd.blogspot.com/2010/09/alzheimers-autism-amyotrophic-lateral.html
http://betaamyloidcjd.blogspot.com/
2010 PRION UPDATE
Thursday, August 12, 2010
Seven main threats for the future linked to prions
http://prionpathy.blogspot.com/2010/08/seven-main-threats-for-future-linked-to.html
http://prionpathy.blogspot.com/
TSS
Friday, October 22, 2010
Peripherally Applied Aß-Containing Inoculates Induce Cerebral ß-Amyloidosis
http://betaamyloidcjd.blogspot.com/2010/10/peripherally-applied-containing.html
Saturday, March 22, 2008
10 Million Baby Boomers to have Alzheimer's in the coming decades
http://betaamyloidcjd.blogspot.com/2008/03/10-million-baby-boomers-to-have.html
see full text Alzheimer's and CJD i.e. TSE, aka mad cow disease
http://betaamyloidcjd.blogspot.com/
Thursday, November 18, 2010
UNITED STATES OF AMERICA VS GALEN J. NIEHUES FAKED MAD COW FEED TEST ON 92 BSE INSPECTION REPORTS FOR APPROXIMATELY 100 CATTLE OPERATIONS
http://bse-atypical.blogspot.com/2010/11/united-states-of-america-vs-galen-j.html
Tuesday, November 02, 2010
IN CONFIDENCE
The information contained herein should not be disseminated further except on the basis of "NEED TO KNOW".
BSE - ATYPICAL LESION DISTRIBUTION (RBSE 92-21367) statutory (obex only) diagnostic criteria CVL 1992
http://bse-atypical.blogspot.com/2010/11/bse-atypical-lesion-distribution-rbse.html
with saddest regards, terry
Published: Nov. 22, 2010 at 9:57 AM
SEAL BEACH, Calif., Nov. 22 (UPI) -- A man who had long cared for his ailing wife, whose "mind was gone," ended 70 years of marriage by shooting her in a nursing home, their daughter said.
Roy Charles Laird, 88, killed his wife Clara, 86, Sunday with a single gunshot to the head at the Country Villa Health Care Center in Seal Beach, police told the Los Angeles Times.
"It was a mercy killing," said their daughter, Kathy Palmateer, 68. "Her mind was gone."
As Clara Laird declined steadily from dementia over five years, her husband cared for her himself at home until three months ago. He would visit her at the nursing home three times a day, spoon-feeding her at each meal, friends and family said.
Around noon Sunday, a single gunshot was heard at the nursing home. Within minutes, police surrounded it and called in backup.
"We didn't know if we had a shooter or not," said Seal Beach police Sgt. Steve Bowles.
Police found Clara Laird dead in her bed and her husband in the hallway. He followed them into her room, took a .38-caliber revolver out of his pocket and calmly set it on a table, Bowles said.
Laird was arrested on suspicion of murder.
http://www.upi.com/Top_News/US/2010/11/22/Man-88-kills-wife-in-Calif-nursing-home/UPI-65541290437876/
God bless his soul, and may they both rest in peace. he will not last long now, because his soul died too. Alzheimer's, Prion disease, Dementia, and all neurological disease are truly a nightmare. If you have never witnessed the demise and death of a person from this, long term, or short, then you really should not persecute this man.
AS a layperson, and as someone that has witnessed the demise and death of a close loved one to hvCJD and Alzheimer's, it is a cruel, brutal death, and the loved ones and friends that care for them, a part of them die as well, and you never forget.
I do not condone, or approve of this man choice to end the brutal clutches of Alzheimer's that had a hold of his wife, but i have been there before. ...
BSE101/1 0136
IN CONFIDENCE
CMO
From: Dr J S Metters DCMO
4 November 1992
TRANSMISSION OF ALZHEIMER TYPE PLAQUES TO PRIMATES
http://collections.europarchive.org/tna/20081106170650/http://www.bseinquiry.gov.uk/files/yb/1992/11/04001001.pdf
CJD1/9 0185
Ref: 1M51A
IN STRICT CONFIDENCE
From: Dr. A Wight
Date: 5 January 1993
Copies:
Dr Metters
Dr Skinner
Dr Pickles
Dr Morris
Mr Murray
TRANSMISSION OF ALZHEIMER-TYPE PLAQUES TO PRIMATES
http://collections.europarchive.org/tna/20080102191246/http://www.bseinquiry.gov.uk/files/yb/1993/01/05004001.pdf
Friday, September 3, 2010
Alzheimer's, Autism, Amyotrophic Lateral Sclerosis, Parkinson's, Prionoids, Prionpathy, Prionopathy, TSE
http://betaamyloidcjd.blogspot.com/2010/09/alzheimers-autism-amyotrophic-lateral.html
http://betaamyloidcjd.blogspot.com/
2010 PRION UPDATE
Thursday, August 12, 2010
Seven main threats for the future linked to prions
http://prionpathy.blogspot.com/2010/08/seven-main-threats-for-future-linked-to.html
http://prionpathy.blogspot.com/
TSS
Friday, October 22, 2010
Peripherally Applied Aß-Containing Inoculates Induce Cerebral ß-Amyloidosis
http://betaamyloidcjd.blogspot.com/2010/10/peripherally-applied-containing.html
Saturday, March 22, 2008
10 Million Baby Boomers to have Alzheimer's in the coming decades
http://betaamyloidcjd.blogspot.com/2008/03/10-million-baby-boomers-to-have.html
see full text Alzheimer's and CJD i.e. TSE, aka mad cow disease
http://betaamyloidcjd.blogspot.com/
Thursday, November 18, 2010
UNITED STATES OF AMERICA VS GALEN J. NIEHUES FAKED MAD COW FEED TEST ON 92 BSE INSPECTION REPORTS FOR APPROXIMATELY 100 CATTLE OPERATIONS
http://bse-atypical.blogspot.com/2010/11/united-states-of-america-vs-galen-j.html
Tuesday, November 02, 2010
IN CONFIDENCE
The information contained herein should not be disseminated further except on the basis of "NEED TO KNOW".
BSE - ATYPICAL LESION DISTRIBUTION (RBSE 92-21367) statutory (obex only) diagnostic criteria CVL 1992
http://bse-atypical.blogspot.com/2010/11/bse-atypical-lesion-distribution-rbse.html
with saddest regards, terry
Thursday, October 28, 2010
Alzheimer's Disease Constituent Response From Senator Kay Bailey Hutchison
----- Original Message -----
From: Senator Kay Bailey Hutchison
To: flounder9@verizon.net
Sent: Monday, October 25, 2010 11:32 AM
Subject: Constituent Response From Senator Kay Bailey Hutchison
Dear Friend:
Thank you for contacting me regarding funding for Alzheimer’s disease. I welcome your thoughts and comments.
On July 22, 2009, Senator Barbara Mikulski (D-MD) introduced S. 1492, the Alzheimer’s Breakthrough Act. This bill would increase Alzheimer’s research funding through the National Institutes of Health (NIH) from $400 million to $2 billion in 2010. The legislation would also establish a National Summit on Alzheimer’s disease to coordinate researchers, policymakers and public health professionals. Additionally, it would expand the Alzheimer’s State Matching Grant Program as well as the Alzheimer’s 24/7 call center to provide updated resources and tools for caregivers, family members and those affected in a multilingual capacity.
The Alzheimer’s Breakthrough Act has been referred to the Senate Committee on Health, Education, Labor and Pensions, on which I do not serve. Should this legislation come before the full Senate for a vote, you may be certain I will keep your views in mind.
I am a strong proponent of biomedical research to help discover the causes of and cures for diseases like Alzheimer’s. I recently supported an amendment introduced by Senator Tom Harkin (D-IA) to H.R. 1, America’s Recovery and Reinvestment Act, which appropriated $6.5 billion to the NIH.
As a member of the Senate Appropriations Committee, I worked to include more than $945 million for chronic disease prevention, health promotion and genomics in the FY 2010 Labor, Health and Human Services, Education, and Related Agencies Appropriations Bill (H.R. 3293). This funding is almost a $65 million increase from FY 2009 and includes $2 million specifically for Alzheimer's disease. I also worked with the Committee to include approximately $1.1 billion for the National Institute on Aging (NIA) and strongly urged the NIA to devote more funding to clinical studies and the renewal of the Alzheimer's Disease Neuroimaging Initiative. H.R. 3293 was passed by the Senate Appropriations Committee on July 30, 2009, and is now ready to be considered by the full Senate.
I appreciate hearing from you, and I hope that you will not hesitate to contact me on any issue that is important to you.
Sincerely,
Kay Bailey Hutchison
United States Senator
284 Russell Senate Office Building
Washington, DC 20510
202-224-5922 (tel)
202-224-0776 (fax)
http://hutchison.senate.gov
PLEASE DO NOT REPLY to this message as this mailbox is only for the delivery of outbound messages, and is not monitored for replies. Due to the volume of mail Senator Hutchison receives, she requests that all email messages be sent through the contact form found on her website at http://hutchison.senate.gov/contact.cfm .
If you would like more information about issues pending before the Senate, please visit the Senator's website at http://hutchison.senate.gov . You will find articles, floor statements, and press releases, along with her weekly column and monthly television show on current events. You can also sign up to receive Senator Hutchison's weekly e-newsletter.
Thank you.
end
========================
BSE101/1 0136
IN CONFIDENCE
CMO
From: Dr J S Metters DCMO
4 November 1992
TRANSMISSION OF ALZHEIMER TYPE PLAQUES TO PRIMATES
http://collections.europarchive.org/tna/20081106170650/http://www.bseinquiry.gov.uk/files/yb/1992/11/04001001.pdf
CJD1/9 0185
Ref: 1M51A
IN STRICT CONFIDENCE
From: Dr. A Wight
Date: 5 January 1993
Copies:
Dr Metters
Dr Skinner
Dr Pickles
Dr Morris
Mr Murray
TRANSMISSION OF ALZHEIMER-TYPE PLAQUES TO PRIMATES
http://collections.europarchive.org/tna/20080102191246/http://www.bseinquiry.gov.uk/files/yb/1993/01/05004001.pdf
Friday, September 3, 2010
Alzheimer's, Autism, Amyotrophic Lateral Sclerosis, Parkinson's, Prionoids, Prionpathy, Prionopathy, TSE
http://betaamyloidcjd.blogspot.com/2010/09/alzheimers-autism-amyotrophic-lateral.html
http://betaamyloidcjd.blogspot.com/
2010 PRION UPDATE
Thursday, August 12, 2010
Seven main threats for the future linked to prions
http://prionpathy.blogspot.com/2010/08/seven-main-threats-for-future-linked-to.html
http://prionpathy.blogspot.com/
TSS
Friday, October 22, 2010
Peripherally Applied Aß-Containing Inoculates Induce Cerebral ß-Amyloidosis
http://betaamyloidcjd.blogspot.com/2010/10/peripherally-applied-containing.html
From: Senator Kay Bailey Hutchison
To: flounder9@verizon.net
Sent: Monday, October 25, 2010 11:32 AM
Subject: Constituent Response From Senator Kay Bailey Hutchison
Dear Friend:
Thank you for contacting me regarding funding for Alzheimer’s disease. I welcome your thoughts and comments.
On July 22, 2009, Senator Barbara Mikulski (D-MD) introduced S. 1492, the Alzheimer’s Breakthrough Act. This bill would increase Alzheimer’s research funding through the National Institutes of Health (NIH) from $400 million to $2 billion in 2010. The legislation would also establish a National Summit on Alzheimer’s disease to coordinate researchers, policymakers and public health professionals. Additionally, it would expand the Alzheimer’s State Matching Grant Program as well as the Alzheimer’s 24/7 call center to provide updated resources and tools for caregivers, family members and those affected in a multilingual capacity.
The Alzheimer’s Breakthrough Act has been referred to the Senate Committee on Health, Education, Labor and Pensions, on which I do not serve. Should this legislation come before the full Senate for a vote, you may be certain I will keep your views in mind.
I am a strong proponent of biomedical research to help discover the causes of and cures for diseases like Alzheimer’s. I recently supported an amendment introduced by Senator Tom Harkin (D-IA) to H.R. 1, America’s Recovery and Reinvestment Act, which appropriated $6.5 billion to the NIH.
As a member of the Senate Appropriations Committee, I worked to include more than $945 million for chronic disease prevention, health promotion and genomics in the FY 2010 Labor, Health and Human Services, Education, and Related Agencies Appropriations Bill (H.R. 3293). This funding is almost a $65 million increase from FY 2009 and includes $2 million specifically for Alzheimer's disease. I also worked with the Committee to include approximately $1.1 billion for the National Institute on Aging (NIA) and strongly urged the NIA to devote more funding to clinical studies and the renewal of the Alzheimer's Disease Neuroimaging Initiative. H.R. 3293 was passed by the Senate Appropriations Committee on July 30, 2009, and is now ready to be considered by the full Senate.
I appreciate hearing from you, and I hope that you will not hesitate to contact me on any issue that is important to you.
Sincerely,
Kay Bailey Hutchison
United States Senator
284 Russell Senate Office Building
Washington, DC 20510
202-224-5922 (tel)
202-224-0776 (fax)
http://hutchison.senate.gov
PLEASE DO NOT REPLY to this message as this mailbox is only for the delivery of outbound messages, and is not monitored for replies. Due to the volume of mail Senator Hutchison receives, she requests that all email messages be sent through the contact form found on her website at http://hutchison.senate.gov/contact.cfm .
If you would like more information about issues pending before the Senate, please visit the Senator's website at http://hutchison.senate.gov . You will find articles, floor statements, and press releases, along with her weekly column and monthly television show on current events. You can also sign up to receive Senator Hutchison's weekly e-newsletter.
Thank you.
end
========================
BSE101/1 0136
IN CONFIDENCE
CMO
From: Dr J S Metters DCMO
4 November 1992
TRANSMISSION OF ALZHEIMER TYPE PLAQUES TO PRIMATES
http://collections.europarchive.org/tna/20081106170650/http://www.bseinquiry.gov.uk/files/yb/1992/11/04001001.pdf
CJD1/9 0185
Ref: 1M51A
IN STRICT CONFIDENCE
From: Dr. A Wight
Date: 5 January 1993
Copies:
Dr Metters
Dr Skinner
Dr Pickles
Dr Morris
Mr Murray
TRANSMISSION OF ALZHEIMER-TYPE PLAQUES TO PRIMATES
http://collections.europarchive.org/tna/20080102191246/http://www.bseinquiry.gov.uk/files/yb/1993/01/05004001.pdf
Friday, September 3, 2010
Alzheimer's, Autism, Amyotrophic Lateral Sclerosis, Parkinson's, Prionoids, Prionpathy, Prionopathy, TSE
http://betaamyloidcjd.blogspot.com/2010/09/alzheimers-autism-amyotrophic-lateral.html
http://betaamyloidcjd.blogspot.com/
2010 PRION UPDATE
Thursday, August 12, 2010
Seven main threats for the future linked to prions
http://prionpathy.blogspot.com/2010/08/seven-main-threats-for-future-linked-to.html
http://prionpathy.blogspot.com/
TSS
Friday, October 22, 2010
Peripherally Applied Aß-Containing Inoculates Induce Cerebral ß-Amyloidosis
http://betaamyloidcjd.blogspot.com/2010/10/peripherally-applied-containing.html
Labels:
Alzheimer's,
CJD,
Pathological Prion Protein,
ß-Amyloidosis,
TRANSMISSIBLE,
TSE
Friday, October 22, 2010
Peripherally Applied Aß-Containing Inoculates Induce Cerebral ß-Amyloidosis
Peripherally Applied Aß-Containing Inoculates Induce Cerebral ß-Amyloidosis
Yvonne S. Eisele,1,2 Ulrike Obermüller,1,2 Götz Heilbronner,1,2,3 Frank Baumann,1,2 Stephan A. Kaeser,1,2
Hartwig Wolburg,4 Lary C. Walker,5 Matthias Staufenbiel,6 Mathias Heikenwalder,7 Mathias Jucker1,2*
1Department of Cellular Neurology, Hertie-Institute for Clinical Brain Research, University of Tübingen, D-72076 Tübingen,
Germany. 2DZNE - German Center for Neurodegenerative Diseases, Tübingen, Germany. 3Graduate School for Cellular and
Molecular Neuroscience, University of Tübingen, Tübingen, Germany. 4Department of Pathology, University of Tübingen,
Tübingen, Germany. 5Yerkes National Primate Research Center and Department of Neurology, Emory University, Atlanta, GA,
USA. 6Novartis Institutes for Biomedical Research, Neuroscience Discovery, Basel, Switzerland. 7Department of Pathology,
Institute for Neuropathology, University Hospital, Zürich, Switzerland.
*To whom correspondence should be addressed. E-mail: mathias.jucker@uni-tuebingen.de
The intracerebral injection of â-amyloid–containing brain extracts can induce cerebral â-amyloidosis and associated pathologies in susceptible hosts. Here, we found that intraperitoneal inoculation with â-amyloid–rich extracts induced â-amyloidosis in the brains of â-amyloid precursor protein transgenic mice after prolonged incubation times.
Intracerebral (i.c.) inoculation with minute amounts of brain extract containing misfolded ß-amyloid (Aß) from patients with Alzheimer’s Disease or from amyloid-bearing ß-amyloid precursor protein (APP) transgenic (tg) mice induces cerebral ß-amyloidosis and related pathologies in APP tg mice in a time- and concentration-dependent manner (1). However, oral, intravenous, intraocular, or intranasal inoculations have failed to induce cerebral ß-amyloidosis in APP tg hosts (2). These findings suggest that Aß-containing brain material in direct contact with the brain can induce cerebral ß-amyloidosis, but that, unlike prions, either the inducing agent is not readily conveyed from peripheral sites to the brain, or a higher concentration or longer incubation period is required for peripherally delivered Aß seeds.
Intraperitoneal (i.p.) administration of prion-rich material is more efficient at transmitting prion disease than is oral administration (3, 4). To test whether i.p. inoculation of Aß- rich material might similarly trigger Aß misfolding and deposition in the brain, we administered two i.p. injections (100 µl each, 1 week apart) of Aß-laden (10-20 ng/µl) brain extract from aged APP23 tg mice (Tg extract) to a cohort of young (2-month-old) female APP23 tg mice (5). After a 7-month incubation period, cerebral ß-amyloidosis was robustly induced in all i.p. inoculated mice compared to untreated littermate controls (Fig. 1). To confirm this finding, we inoculated a second cohort of 2-month-old female APP23 mice with a different batch of Tg brain extract in another laboratory (cohort 2: Tübingen, vs. cohort 1: Basel). After 6–7 months, mice injected i.p. with the Tg extract exhibited robust cerebral ß-amyloidosis, whereas i.p. inoculation with phosphate-buffered saline (PBS) or brain extract from agematched, non-tg wildtype mice (Wt extract) was ineffective (Fig. 1).
Induced ß-amyloidosis was strongest in the anterior and entorhinal cortices with additional deposition in the hippocampus, resembling the regional development of endogenous ß-amyloidosis in aged APP23 mice (6). However, whereas normal aged APP23 mice manifest mostly parenchymal deposits, the induced ß-amyloid in i.p. seeded mice was predominantly associated with blood vessels (cerebral ß-amyloid angiopathy [Aß-CAA]), often with massive spreading into the neighboring brain parenchyma (Fig. 1). The presence of Aß was confirmed by immunoblotting, and amyloid fibrils were evident ultrastructurally; in addition, the induced ß-amyloidosis was linked to gliosis, hyperphosphorylated tau, and other associated pathologies (Fig. 2), reminiscent of the cerebral ß-amyloid deposition in aged APP23 mice (6, 7).
To compare the efficiency and time course of i.p. versus i.c. inoculation, 2-month-old female APP23 mice were inoculated either i.p. (2 x 100 µl) or i.c. (2.5 µl into the hippocampus) with Tg extract, and then analyzed 4 months later. No cerebral ß-amyloid induction was found in any of the 4 i.p. inoculated mice, while all 6 i.c. inoculated mice revealed ß-amyloid induction identical to that previously reported (1, 2). From this observation, together with previous time course and 1:20 dilution experiments for i.c. inoculations (1), we estimate that i.p. inoculations with 103-fold more Aß take 2–5 months longer to induce cerebral ß-amyloidosis than do i.c. inoculations.
The replication of peripherally applied prions and their translocation into the central nervous system depend on hematopoietic and stromal immune cells, in combination with sympathetic innervation of abdominal lymphoid organs (8). Both activation of the immune system and chronic inflammation promote prion replication (9, 10). To assess the immune response to Aß-rich brain extracts, additional APP23 mice were given single i.p. injections of 200 µl Tg or Wt extract and sacrificed 1 hour, 1 week, or 1 month postinjection (5). An acute immune activation to the injected brain material was indicated by transient increases in plasma chemokines and cytokines (IL6, IL10, TNF-a, MCP-1, MIP-1ß) in both Tg and Wt extract-inoculated mice after 1 hour, with IL-6 still mildly elevated in Tg extract-injected mice 1 week post-inoculation (fig. S1). However, no signs of chronic inflammation in various peripheral organs (e.g. liver,pancreas, kidney, lung) or serum anti-Aß antibody titers were found in any mice investigated at 1 or 7 months postseeding (5). Moreover, no ß-amyloid deposition was found in any of the peripheral tissues at any time point studied.
Thus, like prion disease, cerebral ß-amyloidosis can be seeded in the brain by homologous protein aggregates delivered into the peritoneal cavity, although the i.p. route required more time and was less efficient than was direct injection into the brain (1, 2). The amyloid-inducing factor in the Tg extract is probably a species of misfolded Aß that is generated in its most effective form or composition in vivo (1). Because the expression of tg (human) APP is restricted to the nervous system in APP23 mice (7), in this model it is likely that the seed carried to the brain was the injected material itself, rather than Aß aggregates that were first amplified in peripheral tissues.
There is now persuasive evidence that the aggregation of Aß is a key pathogenic feature of AD and Aß-CAA (11–14), although the majority of these cases are initiated by unknown causes. The possibility that mechanisms exist allowing for the transport of Aß aggregates (and possibly other seeds) from the periphery to the brain justifies further studies to better understand the cellular and molecular origin of these diseases and to clarify the basis of infectious vs. non-infectious proteopathies (15, 16).
References and Notes
References and Notes
1. M. Meyer-Lühmann et al., Science 131, 1781 (2006).
2. Y. S. Eisele et al., Proc Natl Acad Sci USA 106, 12926
(2009).
3. S.B. Prusiner, Prion Biology and Diseases (Cold Spring
Harbor Laboratory Press), 2nd Ed pp. 1050 (2004).
4. R.H. Kimberlin, C.A. Walker, J Comp Path 88, 39 (1978).
5. For methods, see Supporting Online Material.
6. C. Sturchler-Pierrat et al., Proc Natl Acad Sci USA 94,
13287 (1997).
7. M.E. Calhoun et al., Proc Natl Acad Sci USA 96, 14088
(1999).
8. A. Aguzzi, C. Sigurdson, M. Heikenwälder, Ann Rev
Pathol Mech Dis 3, 11 (2008).
9. M. Heikenwalder et al., Science 307, 1107 (2005).
10. J. Bremer et al., PloS One 4, e7160 (2009).
11. J. Hardy, D. J. Selkoe, Science 297, 353 (2002).
12. M. Sorandt, M. A. Mintun, D. Head, J. C. Morris, Arch
Neurol 66, 1476 (2009).
13. J. C. Morris et al., Arch Neurol 66, 1469 (2009).
14. S. X. Zhang-Nunes et al., Brain Pathology 16, 30 (2006).
15. L. C. Walker, H. LeVine, M. P. Mattson, M. Jucker,
Trends Neurosci 29, 438 (2006).
16. A. Aguzzi, L. Rajendran, Neuron 64, 783 (2009).
17. We thank M.-J. Runser, L. Jacobson (Basel), F. Langer, J.
Coomaraswamy, S. Grathwohl, N. Varvel, T. Hamaguchi,
C. Schäfer, A. Bosch, G. Frommer-Kästle, U. Scheurlen
(Tübingen) for experimental help and A. Aguzzi (Zürich)
for insightful comments. Supported by the Competence
Network on Degenerative Dementias (BMBF-01GI0705),
the BMBF in the frame of ERA-Net NEURON
(MIPROTRAN), the CIN (DFG), and NIH RR-00165.
Supporting Online Material
www.sciencemag.org/cgi/content/full/science.1194516/DC1
Materials and Methods
Fig. S1
References
1 July 2010; accepted 24 September 2010
Published online 21 October 2010; 10.1126/science.1194516
Fig. 1. Induced Aß deposition. (A and B) Aß-immunostained frontal cortex of Tg extract- (A) and Wt extract- (B) i.p. inoculated APP23 mice. (C and D) Most induced ß-amyloid was vascular (Aß-CAA), with Aß-immunoreactivity extending into the brain parenchyma (arrows). Amyloid-laden vessels were congophilic (red in D; birefringent under crosspolarized light, insert) and often were surrounded by diffuse, Congo red-negative Aß deposits (arrowheads). (E and F) Analysis of the entire neocortex for Aß-CAA frequency (indicated are all three [I-III] CAA severity grades [5]), and for total Aß load in Tg extract-inoculated mice compared to control (Ctr) mice. Cohort 1 consisted of 6 Tg extractinoculated mice vs. 7 untreated control mice. Aß-CAA: t(11) = 6.78 (all severity grades combined), ***P < 0.0001; Aß load: t(11) = 8.79, ***P < 0.0001. Cohort 2 consisted of 5 Tg extract-inoculated mice vs. 5 Wt extract-inoculated mice and 4 PBS-injected mice. These latter 2 (control) groups did not differ significantly, and were combined for analysis. Aß-CAA: t(12) = 7.79, ***P < 0.0001; Aß load t(12) = 2.71, *P < 0.05. The occasional parenchymal Aß-deposits in control mice are normal for 9-month-old APP23 mice. Indicated are means ±SEM. Scale bars: 200 µm (A,B); 50 µm (C,D).
Fig. 2. Induced Aß deposition was linked to multiple associated pathologies. (A) Ultrastructural analysis showed amyloid deposition within the vascular basal lamina (BL), with typical amyloid fibrils (arrowheads) extending into the brain parenchyma. Insets are low- and high-magnification views of the examined vessel (L = lumen) and the typical non-branching amyloid fibrils. (B to E) Vascular amyloid(stained by Congo Red in B and C) and parenchymal plaques were surrounded by hypertrophic, Iba1-positive microglia (B), GFAP-positive astrocytes (C), hyperphosphorylated taupositive neurites (D; asterisk indicates amyloid core), but a paucity of proximate neurons (cresyl-violet stain, E). (F and G) Vessels with CAA types II and III showed smooth muscle cell loss at the site of amyloid deposition (arrowheads; confocal image, maximum projection of 5 µm z-stack: red, Aß; green, smooth muscle actin). A normal vessel (G) has a complete ring of smooth muscle cells. (H) Immunoblotting of micropunches of Aß-immunoreactive material revealed the expected Aß band. Synthetic Aß40/42 is shown as control. Markers = 3 and 6 kD. Scale bars: 1 µm (A; insets 5 and 0.5 µm); 50 µm (B-E); 10 µm (F, G).
end...see ;
Peripherally Applied Aß-Containing Inoculates Induce Cerebral ß-Amyloidosis
http://www.sciencemag.org/cgi/content/abstract/science.1194516
BSE101/1 0136
IN CONFIDENCE
CMO
From: Dr J S Metters DCMO
4 November 1992
TRANSMISSION OF ALZHEIMER TYPE PLAQUES TO PRIMATES
http://collections.europarchive.org/tna/20081106170650/http://www.bseinquiry.gov.uk/files/yb/1992/11/04001001.pdf
CJD1/9 0185
Ref: 1M51A
IN STRICT CONFIDENCE
From: Dr. A Wight
Date: 5 January 1993
Copies:
Dr Metters
Dr Skinner
Dr Pickles
Dr Morris
Mr Murray
TRANSMISSION OF ALZHEIMER-TYPE PLAQUES TO PRIMATES
http://collections.europarchive.org/tna/20080102191246/http://www.bseinquiry.gov.uk/files/yb/1993/01/05004001.pdf
Friday, September 3, 2010
Alzheimer's, Autism, Amyotrophic Lateral Sclerosis, Parkinson's, Prionoids, Prionpathy, Prionopathy, TSE
http://betaamyloidcjd.blogspot.com/2010/09/alzheimers-autism-amyotrophic-lateral.html
http://betaamyloidcjd.blogspot.com/
2010 PRION UPDATE
Thursday, August 12, 2010
Seven main threats for the future linked to prions
http://prionpathy.blogspot.com/2010/08/seven-main-threats-for-future-linked-to.html
http://prionpathy.blogspot.com/
TSS
Yvonne S. Eisele,1,2 Ulrike Obermüller,1,2 Götz Heilbronner,1,2,3 Frank Baumann,1,2 Stephan A. Kaeser,1,2
Hartwig Wolburg,4 Lary C. Walker,5 Matthias Staufenbiel,6 Mathias Heikenwalder,7 Mathias Jucker1,2*
1Department of Cellular Neurology, Hertie-Institute for Clinical Brain Research, University of Tübingen, D-72076 Tübingen,
Germany. 2DZNE - German Center for Neurodegenerative Diseases, Tübingen, Germany. 3Graduate School for Cellular and
Molecular Neuroscience, University of Tübingen, Tübingen, Germany. 4Department of Pathology, University of Tübingen,
Tübingen, Germany. 5Yerkes National Primate Research Center and Department of Neurology, Emory University, Atlanta, GA,
USA. 6Novartis Institutes for Biomedical Research, Neuroscience Discovery, Basel, Switzerland. 7Department of Pathology,
Institute for Neuropathology, University Hospital, Zürich, Switzerland.
*To whom correspondence should be addressed. E-mail: mathias.jucker@uni-tuebingen.de
The intracerebral injection of â-amyloid–containing brain extracts can induce cerebral â-amyloidosis and associated pathologies in susceptible hosts. Here, we found that intraperitoneal inoculation with â-amyloid–rich extracts induced â-amyloidosis in the brains of â-amyloid precursor protein transgenic mice after prolonged incubation times.
Intracerebral (i.c.) inoculation with minute amounts of brain extract containing misfolded ß-amyloid (Aß) from patients with Alzheimer’s Disease or from amyloid-bearing ß-amyloid precursor protein (APP) transgenic (tg) mice induces cerebral ß-amyloidosis and related pathologies in APP tg mice in a time- and concentration-dependent manner (1). However, oral, intravenous, intraocular, or intranasal inoculations have failed to induce cerebral ß-amyloidosis in APP tg hosts (2). These findings suggest that Aß-containing brain material in direct contact with the brain can induce cerebral ß-amyloidosis, but that, unlike prions, either the inducing agent is not readily conveyed from peripheral sites to the brain, or a higher concentration or longer incubation period is required for peripherally delivered Aß seeds.
Intraperitoneal (i.p.) administration of prion-rich material is more efficient at transmitting prion disease than is oral administration (3, 4). To test whether i.p. inoculation of Aß- rich material might similarly trigger Aß misfolding and deposition in the brain, we administered two i.p. injections (100 µl each, 1 week apart) of Aß-laden (10-20 ng/µl) brain extract from aged APP23 tg mice (Tg extract) to a cohort of young (2-month-old) female APP23 tg mice (5). After a 7-month incubation period, cerebral ß-amyloidosis was robustly induced in all i.p. inoculated mice compared to untreated littermate controls (Fig. 1). To confirm this finding, we inoculated a second cohort of 2-month-old female APP23 mice with a different batch of Tg brain extract in another laboratory (cohort 2: Tübingen, vs. cohort 1: Basel). After 6–7 months, mice injected i.p. with the Tg extract exhibited robust cerebral ß-amyloidosis, whereas i.p. inoculation with phosphate-buffered saline (PBS) or brain extract from agematched, non-tg wildtype mice (Wt extract) was ineffective (Fig. 1).
Induced ß-amyloidosis was strongest in the anterior and entorhinal cortices with additional deposition in the hippocampus, resembling the regional development of endogenous ß-amyloidosis in aged APP23 mice (6). However, whereas normal aged APP23 mice manifest mostly parenchymal deposits, the induced ß-amyloid in i.p. seeded mice was predominantly associated with blood vessels (cerebral ß-amyloid angiopathy [Aß-CAA]), often with massive spreading into the neighboring brain parenchyma (Fig. 1). The presence of Aß was confirmed by immunoblotting, and amyloid fibrils were evident ultrastructurally; in addition, the induced ß-amyloidosis was linked to gliosis, hyperphosphorylated tau, and other associated pathologies (Fig. 2), reminiscent of the cerebral ß-amyloid deposition in aged APP23 mice (6, 7).
To compare the efficiency and time course of i.p. versus i.c. inoculation, 2-month-old female APP23 mice were inoculated either i.p. (2 x 100 µl) or i.c. (2.5 µl into the hippocampus) with Tg extract, and then analyzed 4 months later. No cerebral ß-amyloid induction was found in any of the 4 i.p. inoculated mice, while all 6 i.c. inoculated mice revealed ß-amyloid induction identical to that previously reported (1, 2). From this observation, together with previous time course and 1:20 dilution experiments for i.c. inoculations (1), we estimate that i.p. inoculations with 103-fold more Aß take 2–5 months longer to induce cerebral ß-amyloidosis than do i.c. inoculations.
The replication of peripherally applied prions and their translocation into the central nervous system depend on hematopoietic and stromal immune cells, in combination with sympathetic innervation of abdominal lymphoid organs (8). Both activation of the immune system and chronic inflammation promote prion replication (9, 10). To assess the immune response to Aß-rich brain extracts, additional APP23 mice were given single i.p. injections of 200 µl Tg or Wt extract and sacrificed 1 hour, 1 week, or 1 month postinjection (5). An acute immune activation to the injected brain material was indicated by transient increases in plasma chemokines and cytokines (IL6, IL10, TNF-a, MCP-1, MIP-1ß) in both Tg and Wt extract-inoculated mice after 1 hour, with IL-6 still mildly elevated in Tg extract-injected mice 1 week post-inoculation (fig. S1). However, no signs of chronic inflammation in various peripheral organs (e.g. liver,pancreas, kidney, lung) or serum anti-Aß antibody titers were found in any mice investigated at 1 or 7 months postseeding (5). Moreover, no ß-amyloid deposition was found in any of the peripheral tissues at any time point studied.
Thus, like prion disease, cerebral ß-amyloidosis can be seeded in the brain by homologous protein aggregates delivered into the peritoneal cavity, although the i.p. route required more time and was less efficient than was direct injection into the brain (1, 2). The amyloid-inducing factor in the Tg extract is probably a species of misfolded Aß that is generated in its most effective form or composition in vivo (1). Because the expression of tg (human) APP is restricted to the nervous system in APP23 mice (7), in this model it is likely that the seed carried to the brain was the injected material itself, rather than Aß aggregates that were first amplified in peripheral tissues.
There is now persuasive evidence that the aggregation of Aß is a key pathogenic feature of AD and Aß-CAA (11–14), although the majority of these cases are initiated by unknown causes. The possibility that mechanisms exist allowing for the transport of Aß aggregates (and possibly other seeds) from the periphery to the brain justifies further studies to better understand the cellular and molecular origin of these diseases and to clarify the basis of infectious vs. non-infectious proteopathies (15, 16).
References and Notes
References and Notes
1. M. Meyer-Lühmann et al., Science 131, 1781 (2006).
2. Y. S. Eisele et al., Proc Natl Acad Sci USA 106, 12926
(2009).
3. S.B. Prusiner, Prion Biology and Diseases (Cold Spring
Harbor Laboratory Press), 2nd Ed pp. 1050 (2004).
4. R.H. Kimberlin, C.A. Walker, J Comp Path 88, 39 (1978).
5. For methods, see Supporting Online Material.
6. C. Sturchler-Pierrat et al., Proc Natl Acad Sci USA 94,
13287 (1997).
7. M.E. Calhoun et al., Proc Natl Acad Sci USA 96, 14088
(1999).
8. A. Aguzzi, C. Sigurdson, M. Heikenwälder, Ann Rev
Pathol Mech Dis 3, 11 (2008).
9. M. Heikenwalder et al., Science 307, 1107 (2005).
10. J. Bremer et al., PloS One 4, e7160 (2009).
11. J. Hardy, D. J. Selkoe, Science 297, 353 (2002).
12. M. Sorandt, M. A. Mintun, D. Head, J. C. Morris, Arch
Neurol 66, 1476 (2009).
13. J. C. Morris et al., Arch Neurol 66, 1469 (2009).
14. S. X. Zhang-Nunes et al., Brain Pathology 16, 30 (2006).
15. L. C. Walker, H. LeVine, M. P. Mattson, M. Jucker,
Trends Neurosci 29, 438 (2006).
16. A. Aguzzi, L. Rajendran, Neuron 64, 783 (2009).
17. We thank M.-J. Runser, L. Jacobson (Basel), F. Langer, J.
Coomaraswamy, S. Grathwohl, N. Varvel, T. Hamaguchi,
C. Schäfer, A. Bosch, G. Frommer-Kästle, U. Scheurlen
(Tübingen) for experimental help and A. Aguzzi (Zürich)
for insightful comments. Supported by the Competence
Network on Degenerative Dementias (BMBF-01GI0705),
the BMBF in the frame of ERA-Net NEURON
(MIPROTRAN), the CIN (DFG), and NIH RR-00165.
Supporting Online Material
www.sciencemag.org/cgi/content/full/science.1194516/DC1
Materials and Methods
Fig. S1
References
1 July 2010; accepted 24 September 2010
Published online 21 October 2010; 10.1126/science.1194516
Fig. 1. Induced Aß deposition. (A and B) Aß-immunostained frontal cortex of Tg extract- (A) and Wt extract- (B) i.p. inoculated APP23 mice. (C and D) Most induced ß-amyloid was vascular (Aß-CAA), with Aß-immunoreactivity extending into the brain parenchyma (arrows). Amyloid-laden vessels were congophilic (red in D; birefringent under crosspolarized light, insert) and often were surrounded by diffuse, Congo red-negative Aß deposits (arrowheads). (E and F) Analysis of the entire neocortex for Aß-CAA frequency (indicated are all three [I-III] CAA severity grades [5]), and for total Aß load in Tg extract-inoculated mice compared to control (Ctr) mice. Cohort 1 consisted of 6 Tg extractinoculated mice vs. 7 untreated control mice. Aß-CAA: t(11) = 6.78 (all severity grades combined), ***P < 0.0001; Aß load: t(11) = 8.79, ***P < 0.0001. Cohort 2 consisted of 5 Tg extract-inoculated mice vs. 5 Wt extract-inoculated mice and 4 PBS-injected mice. These latter 2 (control) groups did not differ significantly, and were combined for analysis. Aß-CAA: t(12) = 7.79, ***P < 0.0001; Aß load t(12) = 2.71, *P < 0.05. The occasional parenchymal Aß-deposits in control mice are normal for 9-month-old APP23 mice. Indicated are means ±SEM. Scale bars: 200 µm (A,B); 50 µm (C,D).
Fig. 2. Induced Aß deposition was linked to multiple associated pathologies. (A) Ultrastructural analysis showed amyloid deposition within the vascular basal lamina (BL), with typical amyloid fibrils (arrowheads) extending into the brain parenchyma. Insets are low- and high-magnification views of the examined vessel (L = lumen) and the typical non-branching amyloid fibrils. (B to E) Vascular amyloid(stained by Congo Red in B and C) and parenchymal plaques were surrounded by hypertrophic, Iba1-positive microglia (B), GFAP-positive astrocytes (C), hyperphosphorylated taupositive neurites (D; asterisk indicates amyloid core), but a paucity of proximate neurons (cresyl-violet stain, E). (F and G) Vessels with CAA types II and III showed smooth muscle cell loss at the site of amyloid deposition (arrowheads; confocal image, maximum projection of 5 µm z-stack: red, Aß; green, smooth muscle actin). A normal vessel (G) has a complete ring of smooth muscle cells. (H) Immunoblotting of micropunches of Aß-immunoreactive material revealed the expected Aß band. Synthetic Aß40/42 is shown as control. Markers = 3 and 6 kD. Scale bars: 1 µm (A; insets 5 and 0.5 µm); 50 µm (B-E); 10 µm (F, G).
end...see ;
Peripherally Applied Aß-Containing Inoculates Induce Cerebral ß-Amyloidosis
http://www.sciencemag.org/cgi/content/abstract/science.1194516
BSE101/1 0136
IN CONFIDENCE
CMO
From: Dr J S Metters DCMO
4 November 1992
TRANSMISSION OF ALZHEIMER TYPE PLAQUES TO PRIMATES
http://collections.europarchive.org/tna/20081106170650/http://www.bseinquiry.gov.uk/files/yb/1992/11/04001001.pdf
CJD1/9 0185
Ref: 1M51A
IN STRICT CONFIDENCE
From: Dr. A Wight
Date: 5 January 1993
Copies:
Dr Metters
Dr Skinner
Dr Pickles
Dr Morris
Mr Murray
TRANSMISSION OF ALZHEIMER-TYPE PLAQUES TO PRIMATES
http://collections.europarchive.org/tna/20080102191246/http://www.bseinquiry.gov.uk/files/yb/1993/01/05004001.pdf
Friday, September 3, 2010
Alzheimer's, Autism, Amyotrophic Lateral Sclerosis, Parkinson's, Prionoids, Prionpathy, Prionopathy, TSE
http://betaamyloidcjd.blogspot.com/2010/09/alzheimers-autism-amyotrophic-lateral.html
http://betaamyloidcjd.blogspot.com/
2010 PRION UPDATE
Thursday, August 12, 2010
Seven main threats for the future linked to prions
http://prionpathy.blogspot.com/2010/08/seven-main-threats-for-future-linked-to.html
http://prionpathy.blogspot.com/
TSS
Labels:
Alzheimer's disease,
Cerebral ß-Amyloidosis,
CJD,
PRION,
Prionoids,
Prionopathy,
Prionpathy
Friday, September 3, 2010
Alzheimer's, Autism, Amyotrophic Lateral Sclerosis, Parkinson's, Prionoids, Prionpathy, Prionopathy, TSE
Alzheimer's, Autism, Amyotrophic Lateral Sclerosis, Parkinson's, Prionoids, Prionpathy, Prionopathy, TSE
Sunday, August 8, 2010
The Transcellular Spread of Cytosolic Amyloids, Prions, and Prionoids
http://betaamyloidcjd.blogspot.com/2010/08/transcellular-spread-of-cytosolic.html
Are some commoner types of neurodegenerative disease (including Alzheimer's disease and Parkinson's disease) also transmissible? Some recent scientific research has suggested this possibility
Monday, October 12, 2009
SEAC Science and Technology Committee's investigation of research funding priorities on behalf of the Advisory Committee on Dangerous Pathogens TSE 8 October 2009
http://www.seac.gov.uk/pdf/hol-response091008.pdf
see full text and more science on this topic here ;
http://bse-atypical.blogspot.com/2009/10/seac-science-and-technology-committees.html
13
Simultaneous Onset of Alzheimer's Disease in a Husband and Wife in Their Mid Fifties: What do We Really Know?
Jonathan Heath1, Lindsay Goicochea2, Mark Smith3, Rudy Castellani4. 1Department of Pathology, University of Maryland; 2University; 3Case Western Reserve University; 4University of Maryland, Baltimore, Maryland
Whereas the genetic factors influencing the development and expression of Alzheimer's disease are well characterized, environmental factors are currently thought to play a marginal role. Such factors as prior closed head injury, post-menopausal estrogen deficiency, aluminum exposure, smoking, diabetes, atherosclerotic cardiovascular disease, and diet, among others, confer only a modest increased risk if any, and are only tangentially considered in the major pathogenic cascades that are presently hypothesized. We present the simultaneous onset of Alzheimer's disease in a husband and wife, with both subjects experiencing cognitive dysfunction within the same month. Both subjects were in their mid-fifties at the time of presentation, both subjects showed progressively neurological decline with prominent memory loss, both subjects experienced myoclonus late in their disease course prompting referral to the National Prion Disease Pathology Surveillance Center, and both subjects expired 12 years after onset, within two months of each other. Review of the family pedigree revealed no family history of dementia or other neurologic illnesses in multiple first degree relatives. The only historical finding of note was that both subjects had moved out of their home briefly while it was being remodeled, and both became symptomatic shortly after moving back in. At autopsy, the subjects had classic advanced Alzheimer's disease, with Braak stage VI pathology that was otherwise identiical in quantity and distribution of amyloid-beta, cerebral amyloid angiopathy, and neurofibrillary degeneration. While no specific toxin or other environmental cause was discerned, these two cases raise the issue of epigenetic factors in Alzheimer's disease that may be more robust than current literature indicates.
http://journals.lww.com/jneuropath/Fulltext/2010/05000/American_Association_of_Neuropathologists,_Inc__.9.aspx
NEUROLOGY 1998;50:684-688 © 1998 American Academy of Neurology
Creutzfeldt-Jakob disease in a husband and wife
P. Brown, MD, L. Cervenáková, MD, L. McShane, PhD, L. G. Goldfarb, MD, K. Bishop, BS, F. Bastian, MD, J. Kirkpatrick, MD, P. Piccardo, MD, B. Ghetti, MD and D. C. Gajdusek, MD From the Laboratory of CNS Studies (Drs. Brown, Cervenáková, Goldfarb, and Gajdusek), NINDS, and Biometric Research Branch (Dr. McShane), NCI, National Institutes of Health, Bethesda, MD; the Department of Obstetrics (K. Bishop), Gynecology and Reproductive Sciences, University of Texas Houston Health Science Center, Houston, TX; the Department of Pathology (Dr. Bastian), University of South Alabama Medical Center, Mobile, AL; the Department of Pathology (Dr. Kirkpatrick), The Methodist Hospital, Houston, TX; and the Department of Pathology (Drs. Piccardo and Ghetti), Indiana University School of Medicine, Indianapolis, IN.
Address correspondence and reprint requests to Dr. Paul Brown, Building 36, Room 5B21, National Institutes of Health, Bethesda, MD 20892.
A 53-year-old man died of sporadic Creutzfeldt-Jakob disease (CJD) after a 1.5-year clinical course. Four and a half years later, his then 55-year-old widow died from CJD after a 1-month illness. Both patients had typical clinical and neuropathologic features of the disease, and pathognomonic proteinase-resistant amyloid protein ("prion" protein, or PrP) was present in both brains. Neither patient had a family history of neurologic disease, and molecular genetic analysis of their PrP genes was normal. No medical, surgical, or dietary antecedent of CJD was identified; therefore, we are left with the unanswerable alternatives of human-to-human transmission or the chance occurrence of sporadic CJD in a husband and wife.
--------------------------------------------------------------------------------
Received May 5, 1997. Accepted in final form September 10, 1997.
http://www.neurology.org/cgi/content/abstract/50/3/684
Research Lead: Dr. David Westaway, University of Alberta
Project: "Extending the spectrum of Prionopathies to Amyotrophic Lateral Sclerosis and Autism"
This project proposes to link the chemistry of the prion protein to the new territory of other nervous system diseases, such as ALS (Lou Gehrig's disease) and the socialization disorder autism-diseases which are at least one thousand times more common than prion diseases. It is believed that a different type or prion protein may operate in other types of brain diseases, which could lead to new ways of thinking about incurable disorders. The project will create changes in the amounts of the various forms of the new membrane protein, and then perform an array of analyses on the behavior and nervous system transmission of laboratory mice. Nervous transmission by electrical impulse can be measured in isolated brain cells, a system that is also convenient to study the effect of stress by adding small amounts of toxins to the fluids bathing the cultures. By these means, the project aims to extend the boundaries of what is considered "prion disease."
Funding: $520,500
http://www.prioninstitute.ca/index.php?page=webpages&menucat=42&id=26&action=displaypage&side=1
Unfolding the Prion Mystery Building and Growing Research Expertise in Alberta Year 4 2008-2009 Annual Report
Dr. David Westaway, University of Alberta Extending the spectrum of prionopathies to amyotrophic lateral sclerosis (ALS) and autism Dr. Westaway’s study aims to extend the boundaries of what is considered prion disease. His project takes the chemistry of the prion protein into the territory of nervous system diseases such as ALS (Lou Gehrig’s disease) and socialization disorder diseases such as autism. These brain diseases are at least 1,000 times more common than diseases currently accepted as prion related. Dr. Westaway hypothesizes that a different type of protein misfolding may operate in brain diseases such as Lou Gehrig’s and autism. This type of protein misfolding may occur in response to stresses in the brain. Unlike misfolded prions, other misfolded proteins may be noninfectious and not viable outside of the affected animal. Dr. Westaway’s research team will investigate these hypotheses by inducing changes in the brain cells of laboratory mice, measuring the resulting electrical impulses in the animals’ nervous systems and analyzing the effect on behaviour. Because nervous transmission by electrical impulse can be measured in isolated brain cells, adding small amounts of toxins to the fluids bathing the cell cultures will make it possible to study the effect of stress. The results could lead to new ways of thinking about nervous system disorders.
http://www.prioninstitute.ca/forms/WEBSITE%20AR.pdf
Sunday, May 18, 2008
MAD COW DISEASE BSE CJD CHILDREN VACCINES
TWA LITTLE STATEMENT 331
http://collections.europarchive.org/tna/20080102163939/http://www.bseinquiry.gov.uk/files/ws/s331.pdf
http://collections.europarchive.org/tna/20080103032631/http://www.bseinquiry.gov.uk/files/yb/1988/11/04003001.pdf
8. The Secretary of State has a number of licences. We understand that the inactivated polio vaccine is no longer being used. There is a stock of smallpox vaccine. We have not been able to determine the source material. (Made in sheep very unlikely to contain bovine ingredients).
CONFIDENTIAL
http://collections.europarchive.org/tna/20080102164642/http://www.bseinquiry.gov.uk/files/yb/1989/02/14010001.pdf
see full text ;
http://bseinquiry.blogspot.com/2008/05/mad-cow-disease-bse-cjd-children.html
Terry S. Singeltary Sr. [flounder@wt.net]
Monday, January 08,200l 3:03 PM
freas@CBS5055530.CBER.FDA.GOV 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,
http://www.fda.gov/ohrms/dockets/ac/01/slides/3681s2_09.pdf
BELOW, PAGE 1 ACTUALLY STARTS ON PAGE 13, then when you get to the bottom, part 3 starts at the top.........TSS
From: Terry S. Singeltary Sr.
To: FREAS@CBER.FDA.GOV
Cc: william.freas@fda.hhs.gov ; rosanna.harvey@fda.hhs.gov
Sent: Friday, December 01, 2006 2:59 PM
Subject: Re: TSE advisory committee for the meeting December 15, 2006 [TSS SUBMISSION
snip...
ONE FINAL COMMENT PLEASE, (i know this is long Dr. Freas but please bear with me)
THE USA is in a most unique situation, one of unknown circumstances with human and animal TSE. THE USA has the most documented TSE in different species to date, with substrains growing in those species (BSE/BASE in cattle and CWD in deer and elk, there is evidence here with different strains), and we know that sheep scrapie has over 20 strains of the typical scrapie with atypical scrapie documented and also BSE is very likely to have passed to sheep. all of which have been rendered and fed back to animals for human and animal consumption, a frightening scenario. WE do not know the outcome, and to play with human life around the globe with the very likely TSE tainted blood from the USA, in my opinion is like playing Russian roulette, of long duration, with potential long and enduring consequences, of which once done, cannot be undone.
These are the facts as i have come to know through daily and extensive research of TSE over 9 years, since 12/14/97. I do not pretend to have all the answers, but i do know to continue to believe in the ukbsenvcjd only theory of transmission to humans of only this one strain from only this one TSE from only this one part of the globe, will only lead to further failures, and needless exposure to humans from all strains of TSE, and possibly many more needless deaths from TSE via a multitude of proven routes and sources via many studies with primates and rodents and other species. ...
Terry S. Singeltary Sr. P.O. Box 42 Bacliff, Texas USA 77518
snip... 48 pages...
http://www.regulations.gov/fdmspublic/ContentViewer?objectId=09000064801f3413&disposition=attachment&contentType=msw8
Subject: Louping-ill vaccine documents from November 23rd, 1946
Date: Sat, 9 Sep 2000 17:44:57 -0700
From: "Terry S. Singeltary Sr."
Reply-To: Bovine Spongiform Encephalopathy
To: BSE-L@uni-karlsruhe.de
http://www.whale.to/v/singeltary.html
Tuesday, August 03, 2010
Variably protease-sensitive prionopathy: A new sporadic disease of the prion protein
http://creutzfeldt-jakob-disease.blogspot.com/2010/08/variably-protease-sensitive-prionopathy.html
Monday, August 9, 2010
Variably protease-sensitive prionopathy: A new sporadic disease of the prion protein or just more PRIONBALONEY ?
http://prionunitusaupdate2008.blogspot.com/2010/08/variably-protease-sensitive-prionopathy.html
Wednesday, August 18, 2010
Incidence of CJD Deaths Reported by CJD-SS in Canada as of July 31, 2010
http://creutzfeldt-jakob-disease.blogspot.com/2010/08/incidence-of-cjd-deaths-reported-by-cjd.html
Monday, August 9, 2010
National Prion Disease Pathology Surveillance Center Cases Examined (July 31, 2010)
(please watch and listen to the video and the scientist speaking about atypical BSE and sporadic CJD and listen to Professor Aguzzi)
http://prionunitusaupdate2008.blogspot.com/2010/08/national-prion-disease-pathology.html
TSS
Sunday, August 8, 2010
The Transcellular Spread of Cytosolic Amyloids, Prions, and Prionoids
http://betaamyloidcjd.blogspot.com/2010/08/transcellular-spread-of-cytosolic.html
Are some commoner types of neurodegenerative disease (including Alzheimer's disease and Parkinson's disease) also transmissible? Some recent scientific research has suggested this possibility
Monday, October 12, 2009
SEAC Science and Technology Committee's investigation of research funding priorities on behalf of the Advisory Committee on Dangerous Pathogens TSE 8 October 2009
http://www.seac.gov.uk/pdf/hol-response091008.pdf
see full text and more science on this topic here ;
http://bse-atypical.blogspot.com/2009/10/seac-science-and-technology-committees.html
13
Simultaneous Onset of Alzheimer's Disease in a Husband and Wife in Their Mid Fifties: What do We Really Know?
Jonathan Heath1, Lindsay Goicochea2, Mark Smith3, Rudy Castellani4. 1Department of Pathology, University of Maryland; 2University; 3Case Western Reserve University; 4University of Maryland, Baltimore, Maryland
Whereas the genetic factors influencing the development and expression of Alzheimer's disease are well characterized, environmental factors are currently thought to play a marginal role. Such factors as prior closed head injury, post-menopausal estrogen deficiency, aluminum exposure, smoking, diabetes, atherosclerotic cardiovascular disease, and diet, among others, confer only a modest increased risk if any, and are only tangentially considered in the major pathogenic cascades that are presently hypothesized. We present the simultaneous onset of Alzheimer's disease in a husband and wife, with both subjects experiencing cognitive dysfunction within the same month. Both subjects were in their mid-fifties at the time of presentation, both subjects showed progressively neurological decline with prominent memory loss, both subjects experienced myoclonus late in their disease course prompting referral to the National Prion Disease Pathology Surveillance Center, and both subjects expired 12 years after onset, within two months of each other. Review of the family pedigree revealed no family history of dementia or other neurologic illnesses in multiple first degree relatives. The only historical finding of note was that both subjects had moved out of their home briefly while it was being remodeled, and both became symptomatic shortly after moving back in. At autopsy, the subjects had classic advanced Alzheimer's disease, with Braak stage VI pathology that was otherwise identiical in quantity and distribution of amyloid-beta, cerebral amyloid angiopathy, and neurofibrillary degeneration. While no specific toxin or other environmental cause was discerned, these two cases raise the issue of epigenetic factors in Alzheimer's disease that may be more robust than current literature indicates.
http://journals.lww.com/jneuropath/Fulltext/2010/05000/American_Association_of_Neuropathologists,_Inc__.9.aspx
NEUROLOGY 1998;50:684-688 © 1998 American Academy of Neurology
Creutzfeldt-Jakob disease in a husband and wife
P. Brown, MD, L. Cervenáková, MD, L. McShane, PhD, L. G. Goldfarb, MD, K. Bishop, BS, F. Bastian, MD, J. Kirkpatrick, MD, P. Piccardo, MD, B. Ghetti, MD and D. C. Gajdusek, MD From the Laboratory of CNS Studies (Drs. Brown, Cervenáková, Goldfarb, and Gajdusek), NINDS, and Biometric Research Branch (Dr. McShane), NCI, National Institutes of Health, Bethesda, MD; the Department of Obstetrics (K. Bishop), Gynecology and Reproductive Sciences, University of Texas Houston Health Science Center, Houston, TX; the Department of Pathology (Dr. Bastian), University of South Alabama Medical Center, Mobile, AL; the Department of Pathology (Dr. Kirkpatrick), The Methodist Hospital, Houston, TX; and the Department of Pathology (Drs. Piccardo and Ghetti), Indiana University School of Medicine, Indianapolis, IN.
Address correspondence and reprint requests to Dr. Paul Brown, Building 36, Room 5B21, National Institutes of Health, Bethesda, MD 20892.
A 53-year-old man died of sporadic Creutzfeldt-Jakob disease (CJD) after a 1.5-year clinical course. Four and a half years later, his then 55-year-old widow died from CJD after a 1-month illness. Both patients had typical clinical and neuropathologic features of the disease, and pathognomonic proteinase-resistant amyloid protein ("prion" protein, or PrP) was present in both brains. Neither patient had a family history of neurologic disease, and molecular genetic analysis of their PrP genes was normal. No medical, surgical, or dietary antecedent of CJD was identified; therefore, we are left with the unanswerable alternatives of human-to-human transmission or the chance occurrence of sporadic CJD in a husband and wife.
--------------------------------------------------------------------------------
Received May 5, 1997. Accepted in final form September 10, 1997.
http://www.neurology.org/cgi/content/abstract/50/3/684
Research Lead: Dr. David Westaway, University of Alberta
Project: "Extending the spectrum of Prionopathies to Amyotrophic Lateral Sclerosis and Autism"
This project proposes to link the chemistry of the prion protein to the new territory of other nervous system diseases, such as ALS (Lou Gehrig's disease) and the socialization disorder autism-diseases which are at least one thousand times more common than prion diseases. It is believed that a different type or prion protein may operate in other types of brain diseases, which could lead to new ways of thinking about incurable disorders. The project will create changes in the amounts of the various forms of the new membrane protein, and then perform an array of analyses on the behavior and nervous system transmission of laboratory mice. Nervous transmission by electrical impulse can be measured in isolated brain cells, a system that is also convenient to study the effect of stress by adding small amounts of toxins to the fluids bathing the cultures. By these means, the project aims to extend the boundaries of what is considered "prion disease."
Funding: $520,500
http://www.prioninstitute.ca/index.php?page=webpages&menucat=42&id=26&action=displaypage&side=1
Unfolding the Prion Mystery Building and Growing Research Expertise in Alberta Year 4 2008-2009 Annual Report
Dr. David Westaway, University of Alberta Extending the spectrum of prionopathies to amyotrophic lateral sclerosis (ALS) and autism Dr. Westaway’s study aims to extend the boundaries of what is considered prion disease. His project takes the chemistry of the prion protein into the territory of nervous system diseases such as ALS (Lou Gehrig’s disease) and socialization disorder diseases such as autism. These brain diseases are at least 1,000 times more common than diseases currently accepted as prion related. Dr. Westaway hypothesizes that a different type of protein misfolding may operate in brain diseases such as Lou Gehrig’s and autism. This type of protein misfolding may occur in response to stresses in the brain. Unlike misfolded prions, other misfolded proteins may be noninfectious and not viable outside of the affected animal. Dr. Westaway’s research team will investigate these hypotheses by inducing changes in the brain cells of laboratory mice, measuring the resulting electrical impulses in the animals’ nervous systems and analyzing the effect on behaviour. Because nervous transmission by electrical impulse can be measured in isolated brain cells, adding small amounts of toxins to the fluids bathing the cell cultures will make it possible to study the effect of stress. The results could lead to new ways of thinking about nervous system disorders.
http://www.prioninstitute.ca/forms/WEBSITE%20AR.pdf
Sunday, May 18, 2008
MAD COW DISEASE BSE CJD CHILDREN VACCINES
TWA LITTLE STATEMENT 331
http://collections.europarchive.org/tna/20080102163939/http://www.bseinquiry.gov.uk/files/ws/s331.pdf
http://collections.europarchive.org/tna/20080103032631/http://www.bseinquiry.gov.uk/files/yb/1988/11/04003001.pdf
8. The Secretary of State has a number of licences. We understand that the inactivated polio vaccine is no longer being used. There is a stock of smallpox vaccine. We have not been able to determine the source material. (Made in sheep very unlikely to contain bovine ingredients).
CONFIDENTIAL
http://collections.europarchive.org/tna/20080102164642/http://www.bseinquiry.gov.uk/files/yb/1989/02/14010001.pdf
see full text ;
http://bseinquiry.blogspot.com/2008/05/mad-cow-disease-bse-cjd-children.html
Terry S. Singeltary Sr. [flounder@wt.net]
Monday, January 08,200l 3:03 PM
freas@CBS5055530.CBER.FDA.GOV 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,
http://www.fda.gov/ohrms/dockets/ac/01/slides/3681s2_09.pdf
BELOW, PAGE 1 ACTUALLY STARTS ON PAGE 13, then when you get to the bottom, part 3 starts at the top.........TSS
From: Terry S. Singeltary Sr.
To: FREAS@CBER.FDA.GOV
Cc: william.freas@fda.hhs.gov ; rosanna.harvey@fda.hhs.gov
Sent: Friday, December 01, 2006 2:59 PM
Subject: Re: TSE advisory committee for the meeting December 15, 2006 [TSS SUBMISSION
snip...
ONE FINAL COMMENT PLEASE, (i know this is long Dr. Freas but please bear with me)
THE USA is in a most unique situation, one of unknown circumstances with human and animal TSE. THE USA has the most documented TSE in different species to date, with substrains growing in those species (BSE/BASE in cattle and CWD in deer and elk, there is evidence here with different strains), and we know that sheep scrapie has over 20 strains of the typical scrapie with atypical scrapie documented and also BSE is very likely to have passed to sheep. all of which have been rendered and fed back to animals for human and animal consumption, a frightening scenario. WE do not know the outcome, and to play with human life around the globe with the very likely TSE tainted blood from the USA, in my opinion is like playing Russian roulette, of long duration, with potential long and enduring consequences, of which once done, cannot be undone.
These are the facts as i have come to know through daily and extensive research of TSE over 9 years, since 12/14/97. I do not pretend to have all the answers, but i do know to continue to believe in the ukbsenvcjd only theory of transmission to humans of only this one strain from only this one TSE from only this one part of the globe, will only lead to further failures, and needless exposure to humans from all strains of TSE, and possibly many more needless deaths from TSE via a multitude of proven routes and sources via many studies with primates and rodents and other species. ...
Terry S. Singeltary Sr. P.O. Box 42 Bacliff, Texas USA 77518
snip... 48 pages...
http://www.regulations.gov/fdmspublic/ContentViewer?objectId=09000064801f3413&disposition=attachment&contentType=msw8
Subject: Louping-ill vaccine documents from November 23rd, 1946
Date: Sat, 9 Sep 2000 17:44:57 -0700
From: "Terry S. Singeltary Sr."
Reply-To: Bovine Spongiform Encephalopathy
To: BSE-L@uni-karlsruhe.de
http://www.whale.to/v/singeltary.html
Tuesday, August 03, 2010
Variably protease-sensitive prionopathy: A new sporadic disease of the prion protein
http://creutzfeldt-jakob-disease.blogspot.com/2010/08/variably-protease-sensitive-prionopathy.html
Monday, August 9, 2010
Variably protease-sensitive prionopathy: A new sporadic disease of the prion protein or just more PRIONBALONEY ?
http://prionunitusaupdate2008.blogspot.com/2010/08/variably-protease-sensitive-prionopathy.html
Wednesday, August 18, 2010
Incidence of CJD Deaths Reported by CJD-SS in Canada as of July 31, 2010
http://creutzfeldt-jakob-disease.blogspot.com/2010/08/incidence-of-cjd-deaths-reported-by-cjd.html
Monday, August 9, 2010
National Prion Disease Pathology Surveillance Center Cases Examined (July 31, 2010)
(please watch and listen to the video and the scientist speaking about atypical BSE and sporadic CJD and listen to Professor Aguzzi)
http://prionunitusaupdate2008.blogspot.com/2010/08/national-prion-disease-pathology.html
TSS
Sunday, August 8, 2010
The Transcellular Spread of Cytosolic Amyloids, Prions, and Prionoids
Neuron
Perspective
The Transcellular Spread of Cytosolic Amyloids, Prions, and Prionoids
Adriano Aguzzi1,* and Lawrence Rajendran2,* 1Institute of Neuropathology, University Hospital of Zu¨ rich, Schmelzbergstrasse 12, CH-8091 Zu¨ rich, Switzerland 2Systems and Cell Biology of Neurodegeneration, Psychiatry Research, University of Zurich, CH-8008 Zu¨ rich, Switzerland *Correspondence: adriano.aguzzi@usz.ch (A.A.), rajendran@bli.uzh.ch (L.R.) DOI 10.1016/j.neuron.2009.12.016
Recent reports indicate that a growing number of intracellular proteins are not only prone to pathological aggregation but can also be released and ‘‘infect’’ neighboring cells. Therefore, many complex diseases may obey a simple model of propagation where the penetration of seeds into hosts determines spatial spread and disease progression. We term these proteins prionoids, as they appear to infect their neighbors just like prions—but how can bulky protein aggregates be released from cells and how do they access other cells? The widespread existence of such prionoids raises unexpected issues that question our understanding of basic cell biology.
Imagine that you are a neuroscientist vacationing on Mars. One day you encounter a colony of Martians that, as it happens, look similar to water bottles. The Martians are highly distressed and seek your advice, as their community is plagued by an enigmatic transmissible disease. Intrigued, you agree to help. It turns out that the bodies of your exobiotic friends consist of bottles filled with a supersaturated salt solution. At some point crystals have started forming in one individual, and then crystallization has somehow been transferred to other community members. Lacking molecular insight, you would initially conclude that the Martians are affected by an infectious agent. Through ingenuity and technology, you may then discover that the infectious agent is exceedingly simple and homogeneous, that it lacks informational nucleic acids, and that it is generated both by ordered aggregation of an intrinsic precursor and by appositional growth of extrinsically added seeds. Your discovery will earn you the Intergalactic Nobel Prize, yet two crucial questions remain unanswered: how do the crystals transfer between individuals, and what can be done to prevent this from happening?
Middle-aged readers may feel reminded of the plot for Andromeda Strain, a stunningly prescient novel published in 1969 by the late Michael Crichton. But the sci-fi scenario described above is also the blueprint of Prusiner’s hypothesis of prion propagation. Over time, we have learned that prions consist of PrPSc, higher-order aggregates of a physiological protein termed PrPC. Accordingly, prions propagate through elongation and breakage of PrPSc aggregates (Aguzzi and Polymenidou, 2004)—not unlike the crystals vexing our extraterrestrial friends.
There is mounting evidence (Clavaguera et al., 2009; Frost et al., 2009; Ren et al., 2009; Desplats et al., 2009; Luk et al., 2009) suggesting that the events sketched above, far from being confined to science-fiction and prion diseases (whose incidence in humans is just z1/106/year), may underlie highly prevalent human diseases of the brain and many other organs. The unifying characteristics of all these diseases is the aggregation of proteins into highly ordered stacks, henceforth termed ‘‘amyloids’’ irrespective of their size. Since PrPSc undoubtedly fulfills the latter definition of amyloid, one is led to wonder whether the prion principle may be much more pervasive than previously appreciated and whether many more diseases of unknown cause may eventually turn out to rely on prion-like propagation (Table 1, upper panel). Even more intriguingly, a number of proteins appear to exert normal functions when arranged in highly ordered stacks that are similar to amyloids and to prionoids (Table 1, lower panel).
Prions and Prionoids
There is one crucial difference between bona fide prion diseases and all other amyloids and prion-like phenomena hitherto described in uni- and pluricellular organisms (Table 1). Prions are infectious agents, transmissible between individuals, and tractable with microbiological techniques—including, e.g., titer determinations. Even if certain amyloids of yeast and mammals appear to infect neighboring molecules and sometimes neighboring cells, they do not propagate within communities, and none of them were found to cause macroepidemics such as Kuru and bovine spongiform encephalopathy. We have therefore termed these self-aggregating proteins ‘‘prionoids’’ (Aguzzi, 2009), since the lack of microbiological transmissibility precludes their classification as true prions.
Some prionoids may soon qualify for an upgrade to prion status. At least in select settings, amyloid A (AA) amyloidosis may exist as a truly infectious disease based on a self-propagating protein. AA amyloid consists of orderly aggregated fragments of SAA protein, whose deposition can damage many organs of the body. Somewhat bizarrely, AA aggregation is also present in the liver of force-fed geese, hence contributing to the pathophysiology of foie gras (Solomon et al., 2007). AA seeds can induce amyloidosis upon transfer of white blood cells (Sponarova et al., 2008). Furthermore, AA seeds are excreted with the feces, and AA amyloidosis is endemic in populations of cheetah (Zhang et al., 2008). It is therefore tantalizing to suspect that amyloid may entertain the complete life cycle of an infectious agent, including transmission by the orofecal and hematogenous route—similarly to enteroviruses and, perhaps, scrapie prions. While there may be many other good reasons to avoid foie gras, including, e.g., animal welfare concerns, gourmets may not need to panic: under experimental conditions, AA amyloidosis is only transmitted to AgNO3-pretreated mice that display elevated levels of the SAA precursor protein.
Alzheimer’s disease (AD) has long been suspected to be a transmissible disease, but these suspicions have never materialized in epidemiological studies. On the other hand, Mathias Jucker and Lary Walker observed that injection of the Ab peptide from human AD brains induced robust and convincing aggregation of Ab in transgenic mice overexpressing the Ab precursor protein, APP (Kane et al., 2000; Meyer-Luehmann et al., 2006). Jucker’s finding raises an epistemologically significant question: if aggregation depends on the introduction of seeds and on the availability of the monomeric precursor, and if amyloid represents the primordial state of all proteins (Chiti and Dobson, 2006), wouldn’t all proteins—under appropriate conditions— give rise to prionoids in the presence of sufficient precursor?
The issues sketched above go well beyond AD and prions. There are many other diseases—not necessarily involving the nervous system—whose pathogenesis involves ordered aggregation of proteins, but for which there is no evidence of transmission between individuals. The best-studied of these are the systemic amyloidoses, which come about through the nucleation of some aggregation-prone proteins such as transthyretin and immunoglobulin light chains. Yet ordered protein aggregation is by no means confined to the ‘‘classical’’ amyloidoses and extends to a number of conditions, some of which have been rather unexpected.
Type II diabetes is yet another disease whose pathogenesis may involve ordered protein aggregation. Evidence to support this idea was discovered over a century ago (Opie, 1901) but was largely forgotten until recently. It is now evident that aggregation of islet amyloid polypeptide (IAPP) is an exceedingly frequent feature of type II diabetes. IAPP amyloids damage the insulin-producing b cells within pancreatic islets and may crucially contribute to the pathogenesis of diabetes (Hull et al., 2004). It is unknown, however, whether IAPP deposition simply accrues linearly with IAPP production or whether it spreads prion-like from one pancreatic islet to the next.
A body of recent work supports the idea that many aggregation proteinopathies are, in one way or another, transmissible. A recent report showed that a-synuclein is released from neurons and is then taken up by the neighboring cells, thereby aiding in a progressive spread of the protein (Desplats et al., 2009; Lee et al., 2005). When exogenously added to cultured cells, fluorescently labeled, recombinant a-synuclein was internalized from the extracellular milieu into the cytosol. Furthermore, injection of GFP-labeled mouse cortical neuronal stem cells into the hippocampus of a-synuclein-transgenic mice led to the efficient uptake of the host a-synuclein into the grafted cells after just 4 weeks. These findings are reminiscent of the observation that healthy fetal tissue, grafted into the brains of Parkinson’s disease patients, acquired intracellular Lewy bodies. The latter phenomenon is somewhat anecdotal and has been disputed (Mendez et al., 2008), yet it would be entirely compatible with the hypothesis that a-synuclein aggregates are prionoids (Li et al., 2008). A similar study conclusively demonstrated that exogenous a-synuclein fibrils induced the formation of Lewy body-like intracellular inclusions in vitro (Luk et al., 2009). This study also showed that the conversion of the host cell a-synuclein was accompanied by dramatic changes, including hyperphosphorylation and ubiquitination of a-synuclein aggregates—thus recapitulating some key features of the human pathology.
In experiments conceptually analogous to those discussed above, polyglutamine-containing protein aggregates similar to those present in Huntington’s disease and in spinocerebellar ataxias exhibited prion-like propagation (Ren et al., 2009). There, aggregation of huntingtin progressed from the extracellular space to the cytosol and eventually to the nucleus. What is more, similar phenomena occurred upon exposure of cells to Sup35 aggregates, which consist of a yeast protein for which there are no known mammalian paralogs. This suggests that the prionoid properties are intrinsic to amyloids and are not tied to the origin or function of their monomeric precursor protein.
In another work, Tolnay and colleagues report a similar phenomenon in a mouse model of ‘‘tauopathy,’’ a neurodegenerative disease due to intraneuronal aggregation of the microtubule- associated tau protein (Clavaguera et al., 2009). Aggregation- prone mutant tau, when extracted from the brain of transgenic mice, induced tauopathy in mice overexpressing wild-type tau. Assuming that tau pathology wasn’t elicited by some indirect pathway (tau-overexpressing mice develop tangles when exposed to Ab aggregates [Go¨ tz et al., 2001]), these transgenic mice appear to behave like the Martian bottles, since tauopathy was not induced in mice expressing normal levels of tau. In yet another study, the microtubule binding part of the full-length tau was found to attack and penetrate cells when added exogenously, and this again induced host tau misfolding (Frost et al., 2009). This study also showed that aggregated intracellular Tau spontaneously transferred between two cocultured cell populations (Frost et al., 2009). In the case of both tau and polyglutamines, the protein aggregates appear to gain access to the cytosol and to cause further aggregation of their host counterparts—presumably by nucleation.
The unifying characteristics of all these diseases is the aggregation of proteins into highly ordered stacks, termed amyloids irrespective of their size; the growth of these structures also exhibits generic features (Knowles et al., 2009) shared with a wide class of self-assembly phenomena characterized by elongation and fragmentation, such as the formation of analogous aggregates in micro-organisms and in vitro. Two conclusions can be drawn from the recent studies: (1) an unexpected number of amyloidogenic proteins can be released from affected cells in the form of extracellular amyloid seeds, and (2) even more surprisingly, these seeds can then re-enter other cells and nucleate the aggregation of their intracellular counterparts—in the cytosol or even in the nucleus. The biological and practical implications are far-reaching. On the one hand, cell therapies of aggregation diseases may be more difficult than anticipated, as the transplanted cells may undergo infection. A possible remedy could consist in the removal of the genes encoding the precursor of the offending proteins from the cells utilized for therapy—e.g., using the zinc-finger nuclease strategy (Hockemeyer et al., 2009). On the other hand, a novel paradigm of amyloid pathogenesis is emerging from these data, whereby each prionoid behaves as a self-assembling and self-replicating nanomachine.
Conversely, these findings raise a number of enigmas for which we are lacking any satisfactory answer. Whereas PrPC and the Ab are luminally exposed, a-synuclein and tau are cytoplasmic— and huntingtin is even nuclear. Aggregates of both Ab and PrPSc, as well as their monomeric precursors, are found in the extracellular space; it is hence intuitive that the nucleation process can propagate spatially across large distances. Instead, the propagation of cytoplasmic prionoids challenges our basic cell-biological understanding, since it posits that protein aggregates are released into the extracellular space and can subsequently reenter—and wreak havoc—in the cytosol of other cells. The release of cytosolic amyloids is supported by the amelioration of Lewy body pathology in a-synuclein transgenic mice immunized with human a-synuclein (Masliah et al., 2005). Similarly, anti-tau oligomer immunotherapy reduced brain pathology (Asuni et al., 2007), and immunization with mutant SOD1 led to clearance of SOD1 and delayed the onset of the disease in mice (Urushitani et al., 2007). All of these results indicate that cytosolic amyloids are somehow accessible to extracellular antibodies. This raises the question of how these proteins are released into the extracellular space (‘‘cytosol to lumen’’) and how they subsequently re-enter cellular cytosol (‘‘lumen to cytosol’’). Both events require trespassing lipid bilayer barriers—by no means a trivial feat for proteins, let alone highmolecular- weight aggregates.
snip...
Conclusion
The wave of these recent reports on the prion-like behavior of disparate pathogenic proteins raises many more questions than it answers. Here we have highlighted a number of open issues related to mechanisms of cell-to-cell spread of prionoids. The resolution of such issues may constitute the first step toward the development of rational strategies aimed at blocking transcellular propagation. There is justified hope that the latter may decelerate the progression of pathology and, consequently, help toward fighting the devastating outcome of aggregation proteinopathies.
http://www.cell.com/neuron/abstract/S0896-6273(09)01006-X
Sunday, July 18, 2010
Alzheimer's Assocition International Conference on Alzheimer's Disease (updated diagnostic criteria) 2010 July 10 - 15 Honolulu, Hawaii
http://betaamyloidcjd.blogspot.com/2010/07/alzheimers-assocition-international.html
Saturday, April 24, 2010
New connection between Alzheimer’s and prionic illnesses discovered
http://betaamyloidcjd.blogspot.com/2010/04/new-connection-between-alzheimers-and.html
Sunday, June 7, 2009
ALZHEIMER'S DISEASE IS TRANSMISSIBLE
http://betaamyloidcjd.blogspot.com/2009/06/alzheimers-disease-is-transmissible.html
Wednesday, April 14, 2010
Food Combination and Alzheimer Disease Risk A Protective Diet
http://betaamyloidcjd.blogspot.com/2010/04/food-combination-and-alzheimer-disease.html
Alzheimer's and CJD
http://betaamyloidcjd.blogspot.com/
Terry S. Singeltary Sr. P.O. Box 42 Bacliff, Texas USA 77518
Perspective
The Transcellular Spread of Cytosolic Amyloids, Prions, and Prionoids
Adriano Aguzzi1,* and Lawrence Rajendran2,* 1Institute of Neuropathology, University Hospital of Zu¨ rich, Schmelzbergstrasse 12, CH-8091 Zu¨ rich, Switzerland 2Systems and Cell Biology of Neurodegeneration, Psychiatry Research, University of Zurich, CH-8008 Zu¨ rich, Switzerland *Correspondence: adriano.aguzzi@usz.ch (A.A.), rajendran@bli.uzh.ch (L.R.) DOI 10.1016/j.neuron.2009.12.016
Recent reports indicate that a growing number of intracellular proteins are not only prone to pathological aggregation but can also be released and ‘‘infect’’ neighboring cells. Therefore, many complex diseases may obey a simple model of propagation where the penetration of seeds into hosts determines spatial spread and disease progression. We term these proteins prionoids, as they appear to infect their neighbors just like prions—but how can bulky protein aggregates be released from cells and how do they access other cells? The widespread existence of such prionoids raises unexpected issues that question our understanding of basic cell biology.
Imagine that you are a neuroscientist vacationing on Mars. One day you encounter a colony of Martians that, as it happens, look similar to water bottles. The Martians are highly distressed and seek your advice, as their community is plagued by an enigmatic transmissible disease. Intrigued, you agree to help. It turns out that the bodies of your exobiotic friends consist of bottles filled with a supersaturated salt solution. At some point crystals have started forming in one individual, and then crystallization has somehow been transferred to other community members. Lacking molecular insight, you would initially conclude that the Martians are affected by an infectious agent. Through ingenuity and technology, you may then discover that the infectious agent is exceedingly simple and homogeneous, that it lacks informational nucleic acids, and that it is generated both by ordered aggregation of an intrinsic precursor and by appositional growth of extrinsically added seeds. Your discovery will earn you the Intergalactic Nobel Prize, yet two crucial questions remain unanswered: how do the crystals transfer between individuals, and what can be done to prevent this from happening?
Middle-aged readers may feel reminded of the plot for Andromeda Strain, a stunningly prescient novel published in 1969 by the late Michael Crichton. But the sci-fi scenario described above is also the blueprint of Prusiner’s hypothesis of prion propagation. Over time, we have learned that prions consist of PrPSc, higher-order aggregates of a physiological protein termed PrPC. Accordingly, prions propagate through elongation and breakage of PrPSc aggregates (Aguzzi and Polymenidou, 2004)—not unlike the crystals vexing our extraterrestrial friends.
There is mounting evidence (Clavaguera et al., 2009; Frost et al., 2009; Ren et al., 2009; Desplats et al., 2009; Luk et al., 2009) suggesting that the events sketched above, far from being confined to science-fiction and prion diseases (whose incidence in humans is just z1/106/year), may underlie highly prevalent human diseases of the brain and many other organs. The unifying characteristics of all these diseases is the aggregation of proteins into highly ordered stacks, henceforth termed ‘‘amyloids’’ irrespective of their size. Since PrPSc undoubtedly fulfills the latter definition of amyloid, one is led to wonder whether the prion principle may be much more pervasive than previously appreciated and whether many more diseases of unknown cause may eventually turn out to rely on prion-like propagation (Table 1, upper panel). Even more intriguingly, a number of proteins appear to exert normal functions when arranged in highly ordered stacks that are similar to amyloids and to prionoids (Table 1, lower panel).
Prions and Prionoids
There is one crucial difference between bona fide prion diseases and all other amyloids and prion-like phenomena hitherto described in uni- and pluricellular organisms (Table 1). Prions are infectious agents, transmissible between individuals, and tractable with microbiological techniques—including, e.g., titer determinations. Even if certain amyloids of yeast and mammals appear to infect neighboring molecules and sometimes neighboring cells, they do not propagate within communities, and none of them were found to cause macroepidemics such as Kuru and bovine spongiform encephalopathy. We have therefore termed these self-aggregating proteins ‘‘prionoids’’ (Aguzzi, 2009), since the lack of microbiological transmissibility precludes their classification as true prions.
Some prionoids may soon qualify for an upgrade to prion status. At least in select settings, amyloid A (AA) amyloidosis may exist as a truly infectious disease based on a self-propagating protein. AA amyloid consists of orderly aggregated fragments of SAA protein, whose deposition can damage many organs of the body. Somewhat bizarrely, AA aggregation is also present in the liver of force-fed geese, hence contributing to the pathophysiology of foie gras (Solomon et al., 2007). AA seeds can induce amyloidosis upon transfer of white blood cells (Sponarova et al., 2008). Furthermore, AA seeds are excreted with the feces, and AA amyloidosis is endemic in populations of cheetah (Zhang et al., 2008). It is therefore tantalizing to suspect that amyloid may entertain the complete life cycle of an infectious agent, including transmission by the orofecal and hematogenous route—similarly to enteroviruses and, perhaps, scrapie prions. While there may be many other good reasons to avoid foie gras, including, e.g., animal welfare concerns, gourmets may not need to panic: under experimental conditions, AA amyloidosis is only transmitted to AgNO3-pretreated mice that display elevated levels of the SAA precursor protein.
Alzheimer’s disease (AD) has long been suspected to be a transmissible disease, but these suspicions have never materialized in epidemiological studies. On the other hand, Mathias Jucker and Lary Walker observed that injection of the Ab peptide from human AD brains induced robust and convincing aggregation of Ab in transgenic mice overexpressing the Ab precursor protein, APP (Kane et al., 2000; Meyer-Luehmann et al., 2006). Jucker’s finding raises an epistemologically significant question: if aggregation depends on the introduction of seeds and on the availability of the monomeric precursor, and if amyloid represents the primordial state of all proteins (Chiti and Dobson, 2006), wouldn’t all proteins—under appropriate conditions— give rise to prionoids in the presence of sufficient precursor?
The issues sketched above go well beyond AD and prions. There are many other diseases—not necessarily involving the nervous system—whose pathogenesis involves ordered aggregation of proteins, but for which there is no evidence of transmission between individuals. The best-studied of these are the systemic amyloidoses, which come about through the nucleation of some aggregation-prone proteins such as transthyretin and immunoglobulin light chains. Yet ordered protein aggregation is by no means confined to the ‘‘classical’’ amyloidoses and extends to a number of conditions, some of which have been rather unexpected.
Type II diabetes is yet another disease whose pathogenesis may involve ordered protein aggregation. Evidence to support this idea was discovered over a century ago (Opie, 1901) but was largely forgotten until recently. It is now evident that aggregation of islet amyloid polypeptide (IAPP) is an exceedingly frequent feature of type II diabetes. IAPP amyloids damage the insulin-producing b cells within pancreatic islets and may crucially contribute to the pathogenesis of diabetes (Hull et al., 2004). It is unknown, however, whether IAPP deposition simply accrues linearly with IAPP production or whether it spreads prion-like from one pancreatic islet to the next.
A body of recent work supports the idea that many aggregation proteinopathies are, in one way or another, transmissible. A recent report showed that a-synuclein is released from neurons and is then taken up by the neighboring cells, thereby aiding in a progressive spread of the protein (Desplats et al., 2009; Lee et al., 2005). When exogenously added to cultured cells, fluorescently labeled, recombinant a-synuclein was internalized from the extracellular milieu into the cytosol. Furthermore, injection of GFP-labeled mouse cortical neuronal stem cells into the hippocampus of a-synuclein-transgenic mice led to the efficient uptake of the host a-synuclein into the grafted cells after just 4 weeks. These findings are reminiscent of the observation that healthy fetal tissue, grafted into the brains of Parkinson’s disease patients, acquired intracellular Lewy bodies. The latter phenomenon is somewhat anecdotal and has been disputed (Mendez et al., 2008), yet it would be entirely compatible with the hypothesis that a-synuclein aggregates are prionoids (Li et al., 2008). A similar study conclusively demonstrated that exogenous a-synuclein fibrils induced the formation of Lewy body-like intracellular inclusions in vitro (Luk et al., 2009). This study also showed that the conversion of the host cell a-synuclein was accompanied by dramatic changes, including hyperphosphorylation and ubiquitination of a-synuclein aggregates—thus recapitulating some key features of the human pathology.
In experiments conceptually analogous to those discussed above, polyglutamine-containing protein aggregates similar to those present in Huntington’s disease and in spinocerebellar ataxias exhibited prion-like propagation (Ren et al., 2009). There, aggregation of huntingtin progressed from the extracellular space to the cytosol and eventually to the nucleus. What is more, similar phenomena occurred upon exposure of cells to Sup35 aggregates, which consist of a yeast protein for which there are no known mammalian paralogs. This suggests that the prionoid properties are intrinsic to amyloids and are not tied to the origin or function of their monomeric precursor protein.
In another work, Tolnay and colleagues report a similar phenomenon in a mouse model of ‘‘tauopathy,’’ a neurodegenerative disease due to intraneuronal aggregation of the microtubule- associated tau protein (Clavaguera et al., 2009). Aggregation- prone mutant tau, when extracted from the brain of transgenic mice, induced tauopathy in mice overexpressing wild-type tau. Assuming that tau pathology wasn’t elicited by some indirect pathway (tau-overexpressing mice develop tangles when exposed to Ab aggregates [Go¨ tz et al., 2001]), these transgenic mice appear to behave like the Martian bottles, since tauopathy was not induced in mice expressing normal levels of tau. In yet another study, the microtubule binding part of the full-length tau was found to attack and penetrate cells when added exogenously, and this again induced host tau misfolding (Frost et al., 2009). This study also showed that aggregated intracellular Tau spontaneously transferred between two cocultured cell populations (Frost et al., 2009). In the case of both tau and polyglutamines, the protein aggregates appear to gain access to the cytosol and to cause further aggregation of their host counterparts—presumably by nucleation.
The unifying characteristics of all these diseases is the aggregation of proteins into highly ordered stacks, termed amyloids irrespective of their size; the growth of these structures also exhibits generic features (Knowles et al., 2009) shared with a wide class of self-assembly phenomena characterized by elongation and fragmentation, such as the formation of analogous aggregates in micro-organisms and in vitro. Two conclusions can be drawn from the recent studies: (1) an unexpected number of amyloidogenic proteins can be released from affected cells in the form of extracellular amyloid seeds, and (2) even more surprisingly, these seeds can then re-enter other cells and nucleate the aggregation of their intracellular counterparts—in the cytosol or even in the nucleus. The biological and practical implications are far-reaching. On the one hand, cell therapies of aggregation diseases may be more difficult than anticipated, as the transplanted cells may undergo infection. A possible remedy could consist in the removal of the genes encoding the precursor of the offending proteins from the cells utilized for therapy—e.g., using the zinc-finger nuclease strategy (Hockemeyer et al., 2009). On the other hand, a novel paradigm of amyloid pathogenesis is emerging from these data, whereby each prionoid behaves as a self-assembling and self-replicating nanomachine.
Conversely, these findings raise a number of enigmas for which we are lacking any satisfactory answer. Whereas PrPC and the Ab are luminally exposed, a-synuclein and tau are cytoplasmic— and huntingtin is even nuclear. Aggregates of both Ab and PrPSc, as well as their monomeric precursors, are found in the extracellular space; it is hence intuitive that the nucleation process can propagate spatially across large distances. Instead, the propagation of cytoplasmic prionoids challenges our basic cell-biological understanding, since it posits that protein aggregates are released into the extracellular space and can subsequently reenter—and wreak havoc—in the cytosol of other cells. The release of cytosolic amyloids is supported by the amelioration of Lewy body pathology in a-synuclein transgenic mice immunized with human a-synuclein (Masliah et al., 2005). Similarly, anti-tau oligomer immunotherapy reduced brain pathology (Asuni et al., 2007), and immunization with mutant SOD1 led to clearance of SOD1 and delayed the onset of the disease in mice (Urushitani et al., 2007). All of these results indicate that cytosolic amyloids are somehow accessible to extracellular antibodies. This raises the question of how these proteins are released into the extracellular space (‘‘cytosol to lumen’’) and how they subsequently re-enter cellular cytosol (‘‘lumen to cytosol’’). Both events require trespassing lipid bilayer barriers—by no means a trivial feat for proteins, let alone highmolecular- weight aggregates.
snip...
Conclusion
The wave of these recent reports on the prion-like behavior of disparate pathogenic proteins raises many more questions than it answers. Here we have highlighted a number of open issues related to mechanisms of cell-to-cell spread of prionoids. The resolution of such issues may constitute the first step toward the development of rational strategies aimed at blocking transcellular propagation. There is justified hope that the latter may decelerate the progression of pathology and, consequently, help toward fighting the devastating outcome of aggregation proteinopathies.
http://www.cell.com/neuron/abstract/S0896-6273(09)01006-X
Sunday, July 18, 2010
Alzheimer's Assocition International Conference on Alzheimer's Disease (updated diagnostic criteria) 2010 July 10 - 15 Honolulu, Hawaii
http://betaamyloidcjd.blogspot.com/2010/07/alzheimers-assocition-international.html
Saturday, April 24, 2010
New connection between Alzheimer’s and prionic illnesses discovered
http://betaamyloidcjd.blogspot.com/2010/04/new-connection-between-alzheimers-and.html
Sunday, June 7, 2009
ALZHEIMER'S DISEASE IS TRANSMISSIBLE
http://betaamyloidcjd.blogspot.com/2009/06/alzheimers-disease-is-transmissible.html
Wednesday, April 14, 2010
Food Combination and Alzheimer Disease Risk A Protective Diet
http://betaamyloidcjd.blogspot.com/2010/04/food-combination-and-alzheimer-disease.html
Alzheimer's and CJD
http://betaamyloidcjd.blogspot.com/
Terry S. Singeltary Sr. P.O. Box 42 Bacliff, Texas USA 77518
Labels:
Alzheimer's disease,
Cytosolic Amyloids,
Prionoids,
Prions
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