Evaluation of the Possible Transmission of BSE and Scrapie to Gilthead Sea Bream (Sparus aurata)
Abstract Introduction Results and Discussion Materials and Methods Supporting Information Acknowledgments Author Contributions References Evgenia Salta1#, Cynthia Panagiotidis2#, Konstantinos Teliousis3, Spyros Petrakis1,4, Eleftherios Eleftheriadis5, Fotis Arapoglou5, Nikolaos Grigoriadis6, Anna Nicolaou7, Eleni Kaldrymidou3, Grigorios Krey5, Theodoros Sklaviadis2*
1 Department of Pharmacology, Aristotle University of Thessaloniki, Thessaloniki, Greece, 2 Centre for Research and Technology-Hellas, Institute of Agrobiotechnology, Thessaloniki, Greece, 3 Laboratory of Pathology, School of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece, 4 Max Delbruck Center for Molecular Medicine, Department of Neuroproteomics, Berlin-Buch, Germany, 5 National Agricultural Research Foundation, Fisheries Research Institute, Nea Peramos, Greece, 6 B' Department of Neurology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece, 7 Department of Business Administration, University of Macedonia, Thessaloniki, Greece
Abstract Top In transmissible spongiform encephalopathies (TSEs), a group of fatal neurodegenerative disorders affecting many species, the key event in disease pathogenesis is the accumulation of an abnormal conformational isoform (PrPSc) of the host-encoded cellular prion protein (PrPC). While the precise mechanism of the PrPC to PrPSc conversion is not understood, it is clear that host PrPC expression is a prerequisite for effective infectious prion propagation. Although there have been many studies on TSEs in mammalian species, little is known about TSE pathogenesis in fish. Here we show that while gilthead sea bream (Sparus aurata) orally challenged with brain homogenates prepared either from a BSE infected cow or from scrapie infected sheep developed no clinical prion disease, the brains of TSE-fed fish sampled two years after challenge did show signs of neurodegeneration and accumulation of deposits that reacted positively with antibodies raised against sea bream PrP. The control groups, fed with brains from uninfected animals, showed no such signs. Remarkably, the deposits developed much more rapidly and extensively in fish inoculated with BSE-infected material than in the ones challenged with the scrapie-infected brain homogenate, with numerous deposits being proteinase K-resistant. These plaque-like aggregates exhibited congophilia and birefringence in polarized light, consistent with an amyloid-like component. The neurodegeneration and abnormal deposition in the brains of fish challenged with prion, especially BSE, raises concerns about the potential risk to public health. As fish aquaculture is an economically important industry providing high protein nutrition for humans and other mammalian species, the prospect of farmed fish being contaminated with infectious mammalian PrPSc, or of a prion disease developing in farmed fish is alarming and requires further evaluation.
SNIP...
The results of this TSE transmission study with gilthead sea bream indicate the development of a CNS histopathology in the brains of the fish challenged with the TSE-inocula. This neuropathology displays characteristics resembling a novel fish amyloidosis more than a classical TSE. Specifically, while the fish in our study showed no brain spongiosis and no clinical abnormalities, we did find numerous plaque-like deposits in the brains of a significant proportion of the BSE-challenged fish, especially. Although much of the PrP associated with these deposits is PK-sensitive, this should not be taken as an indicator of low potential infectivity, as instances of clinical prion disease, and even infectivity, associated with extremely low levels of detectable PK-resistant PrP have been reported [43]–[45].
In light of the serious ramifications that would follow an unequivocal demonstration of prion disease transmission to fish, it must be emphasized here that the abnormal deposition we observed in the brains of the TSE-challenged fish could possibly have resulted from pathogenic factors other than the prions they were fed. Despite the fact that no such naturally occurring, cross-species infections from mammals to fish have ever been reported [46], we cannot completely rule out this possibility. Thus, however unlikely, one must consider the possibility that the brains used to prepare the inocula for the TSE challenge were infected with an undetected virus or bacteria in addition to the scrapie or BSE present. Together, the time course of brain lesion appearance, i.e. months not days, the ability of the agent to survive the oral challenge route, the absence of brain histopathology in any of the control groups and the production of novel histological lesions in both the BSE- and the scrapie-challenged fish, in the absence of inflammation, however, make this possibility a remote one. A more plausible alternate explanation would be that the amyloidogenic nature of the TSE-inocula might have contributed to the development of a novel fish brain amyloidosis.
Infectivity and transmissibility are crucial issues that still need to be addressed. From a public health standpoint, the transmissibility of each prion strain and the relative ease with which it crosses species barriers, are its most significant characteristics. The spectrum of prionopathies, which has broadened in recent years, includes prion diseases that are not readily transmissible (e.g. some GSS cases), prion strains often associated with negligible clinical symptoms (e.g. the Nor98 scrapie strain), and even some without detectable PrPSc (e.g. PSPr) [44], [47], [48]. It is clear, then, that the evaluation and identification of both unusual prion diseases and prion diseases affecting unusual hosts is a complex task, requiring lengthy studies of pathogenesis, infectivity and transmissibility [49]. Until ongoing transmission studies using “bovinized” transgenic mice are completed, the possibility that the affected sea bream brain tissue might be infectious, must be taken seriously in any consideration to lift EU feed bans, especially those related to farmed fish. ...
SEE FULL TEXT ;
http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0006175
SEE ALSO ;
Monday, June 15, 2009
Farmed Fish May Pose Risk For Mad Cow Disease
SNIP...
PLEASE REMEMBER, even if fish could not contract a Transmissible Spongiform Encephalopathy, it would still be possible for the TSE agent to survive the digestinal tract, and then if that fish was added as an ingredient for feed, the agent could further spread to infect other species. ...TSS
PRODUCT a) Tucker Milling, LLC Tm 32% Sinking Fish Grower, #2680-Pellet, 50 lb. bags, Recall # V-121-6; Tucker Milling, LLC #31120, Game Bird Breeder Pellet, 50 lb. bags, Recall # V-122-6; c) Tucker Milling, LLC #31232 Game Bird Grower, 50 lb. bags, Recall # V-123-6; d) Tucker Milling, LLC 31227-Crumble, Game Bird Starter, BMD Medicated, 50 lb bags, Recall # V-124-6; e) Tucker Milling, LLC #31120, Game Bird Breeder, 50 lb bags, Recall # V-125-6; f) Tucker Milling, LLC #30230, 30 % Turkey Starter, 50 lb bags, Recall # V-126-6; g) Tucker Milling, LLC #30116, TM Broiler Finisher, 50 lb bags, Recall # V-127-6 CODE All products manufactured from 02/01/2005 until 06/20/2006 RECALLING FIRM/MANUFACTURER Recalling Firm: Tucker Milling LLC, Guntersville, AL, by telephone and visit on June 20, 2006, and by letter on June 23, 2006. Manufacturer: H. J. Baker and Brothers Inc., Stamford, CT. Firm initiated recall is ongoing.
REASON Poultry and fish feeds which were possibly contaminated with ruminant based protein were not labeled as "Do not feed to ruminants".
VOLUME OF PRODUCT IN COMMERCE 7,541-50 lb bags
DISTRIBUTION AL, GA, MS, and TN
END OF ENFORCEMENT REPORT FOR AUGUST 9, 2006
###
http://www.fda.gov/bbs/topics/ENFORCE/2006/ENF00964.html
http://madcowfeed.blogspot.com/2009/03/millions-and-millions-of-pounds-of-mad.html
Wednesday, April 02, 2008
In vivo prion protein intestinal uptake in fish
1: APMIS. 2008 Mar;116(3):173-80.
In vivo prion protein intestinal uptake in fish.
Dalla Valle AZ, Iriti M, Faoro F, Berti C, Ciappellano S. Department of Food Science and Microbiology (DISTAM), Section of Human Nutrition, University of Milan, Milan, Italy.
Intestinal uptake of abnormal prion protein (PrP(Sc)), the pathological agent involved in transmissible spongiform encephalopathies (TSEs), has been investigated in rainbow trout (Oncorhynchus mykiss). Experimental procedures were conducted in vivo by immunohistological PrP(Sc) localization in intestine and pyloric caeca after forced feeding of infected material. Results indicate that PrP(Sc) was absorbed by the intestinal mucosa and that it persisted in the fish gastrointestinal tract for up to 3 days in pyloric caeca and for up to 7 days in the distal intestine. It did not remain longer than 15 days in the fish intestine; furthermore, it did not cross the intestinal barrier.
PMID: 18377582 [PubMed - in process]
http://www.ncbi.nlm.nih.gov/pubmed/18377582?ordinalpos=1&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum
Results indicate that PrP(Sc) was absorbed by the intestinal mucosa and that it persisted
in the fish gastrointestinal tract for up to 3 days in pyloric caeca and for up to 7 days in the
distal intestine.
It did not remain longer than 15 days in the fish intestine;
WOULD this not be a potential risk factor for transmission of the PrPSc agent to cattle and other species via fish by-products and or fish feed ???
http://madcowspontaneousnot.blogspot.com/
FULL TEXT ;
http://madcowfeed.blogspot.com/2009/06/farmed-fish-may-pose-risk-for-mad-cow.html
MORE MAD COW FISH FEED RECALLED HERE ;
Subject: MAD COW FEED RECALLS ENFORCEMENT REPORT FOR AUGUST 9, 2006 KY, LA, MS, AL, GA, AND TN 11,000+ TONS Date: August 16, 2006 at 9:19 am PST
RECALLS AND FIELD CORRECTIONS: VETERINARY MEDICINE - CLASS II ______________________________
PRODUCT Bulk custom made dairy feed, Recall # V-115-6 CODE None RECALLING FIRM/MANUFACTURER Hiseville Feed & Seed Co., Hiseville, KY, by telephone and letter on or about July 14, 2006. FDA initiated recall is ongoing. REASON Custom made feeds contain ingredient called Pro-Lak which may contain ruminant derived meat and bone meal. VOLUME OF PRODUCT IN COMMERCE Approximately 2,223 tons DISTRIBUTION KY
______________________________
PRODUCT Bulk custom made dairy feed, Recall # V-116-6 CODE None RECALLING FIRM/MANUFACTURER Rips Farm Center, Tollesboro, KY, by telephone and letter on July 14, 2006. FDA initiated recall is ongoing. REASON Custom made feeds contain ingredient called Pro-Lak which may contain ruminant derived meat and bone meal. VOLUME OF PRODUCT IN COMMERCE 1,220 tons DISTRIBUTION KY
______________________________
PRODUCT Bulk custom made dairy feed, Recall # V-117-6 CODE None RECALLING FIRM/MANUFACTURER Kentwood Co-op, Kentwood, LA, by telephone on June 27, 2006. FDA initiated recall is completed. REASON Possible contamination of animal feed ingredients, including ingredients that are used in feed for dairy animals, with ruminant derived meat and bone meal. VOLUME OF PRODUCT IN COMMERCE 40 tons DISTRIBUTION LA and MS
______________________________
PRODUCT Bulk Dairy Feed, Recall V-118-6 CODE None RECALLING FIRM/MANUFACTURER Cal Maine Foods, Inc., Edwards, MS, by telephone on June 26, 2006. FDA initiated recall is complete. REASON Possible contamination of animal feed ingredients, including ingredients that are used in feed for dairy animals, with ruminant derived meat and bone meal. VOLUME OF PRODUCT IN COMMERCE 7,150 tons DISTRIBUTION MS
______________________________
PRODUCT Bulk custom dairy pre-mixes, Recall # V-119-6 CODE None RECALLING FIRM/MANUFACTURER Walthall County Co-op, Tylertown, MS, by telephone on June 26, 2006. Firm initiated recall is complete. REASON Possible contamination of dairy animal feeds with ruminant derived meat and bone meal. VOLUME OF PRODUCT IN COMMERCE 87 tons DISTRIBUTION MS
______________________________
PRODUCT Bulk custom dairy pre-mixes, Recall # V-120-6 CODE None RECALLING FIRM/MANUFACTURER Ware Milling Inc., Houston, MS, by telephone on June 23, 2006. Firm initiated recall is complete. REASON Possible contamination of dairy animal feeds with ruminant derived meat and bone meal. VOLUME OF PRODUCT IN COMMERCE 350 tons DISTRIBUTION AL and MS
______________________________
PRODUCT a) Tucker Milling, LLC Tm 32% Sinking Fish Grower, #2680-Pellet, 50 lb. bags, Recall # V-121-6; b) Tucker Milling, LLC #31120, Game Bird Breeder Pellet, 50 lb. bags, Recall # V-122-6; c) Tucker Milling, LLC #31232 Game Bird Grower, 50 lb. bags, Recall # V-123-6; d) Tucker Milling, LLC 31227-Crumble, Game Bird Starter, BMD Medicated, 50 lb bags, Recall # V-124-6; e) Tucker Milling, LLC #31120, Game Bird Breeder, 50 lb bags, Recall # V-125-6; f) Tucker Milling, LLC #30230, 30 % Turkey Starter, 50 lb bags, Recall # V-126-6; g) Tucker Milling, LLC #30116, TM Broiler Finisher, 50 lb bags, Recall # V-127-6 CODE All products manufactured from 02/01/2005 until 06/20/2006 RECALLING FIRM/MANUFACTURER Recalling Firm: Tucker Milling LLC, Guntersville, AL, by telephone and visit on June 20, 2006, and by letter on June 23, 2006. Manufacturer: H. J. Baker and Brothers Inc., Stamford, CT. Firm initiated recall is ongoing. REASON Poultry and fish feeds which were possibly contaminated with ruminant based protein were not labeled as "Do not feed to ruminants". VOLUME OF PRODUCT IN COMMERCE 7,541-50 lb bags DISTRIBUTION AL, GA, MS, and TN
END OF ENFORCEMENT REPORT FOR AUGUST 9, 2006
###
http://www.fda.gov/bbs/topics/ENFORCE/2006/ENF00964.html
Subject: MAD COW FEED RECALL AL AND FL VOLUME OF PRODUCT IN COMMERCE 125 TONS Products manufactured from 02/01/2005 until 06/06/2006
Date: August 6, 2006 at 6:16 pm PST
PRODUCT
a) CO-OP 32% Sinking Catfish, Recall # V-100-6; b) Performance Sheep Pell W/Decox/A/N, medicated, net wt. 50 lbs, Recall # V-101-6; c) Pro 40% Swine Conc Meal -- 50 lb, Recall # V-102-6; d) CO-OP 32% Sinking Catfish Food Medicated, Recall # V-103-6; e) "Big Jim's" BBB Deer Ration, Big Buck Blend, Recall # V-104-6; f) CO-OP 40% Hog Supplement Medicated Pelleted, Tylosin 100 grams/ton, 50 lb. bag, Recall # V-105-6; g) Pig Starter Pell II, 18% W/MCDX Medicated 282020, Carbadox -- 0.0055%, Recall # V-106-6; h) CO-OP STARTER-GROWER CRUMBLES, Complete Feed for Chickens from Hatch to 20 Weeks, Medicated, Bacitracin Methylene Disalicylate, 25 and 50 Lbs, Recall # V-107-6; i) CO-OP LAYING PELLETS, Complete Feed for Laying Chickens, Recall # 108-6; j) CO-OP LAYING CRUMBLES, Recall # V-109-6; k) CO-OP QUAIL FLIGHT CONDITIONER MEDICATED, net wt 50 Lbs, Recall # V-110-6; l) CO-OP QUAIL STARTER MEDICATED, Net Wt. 50 Lbs, Recall # V-111-6; m) CO-OP QUAIL GROWER MEDICATED, 50 Lbs, Recall # V-112-6 CODE Product manufactured from 02/01/2005 until 06/06/2006 RECALLING FIRM/MANUFACTURER Alabama Farmers Cooperative, Inc., Decatur, AL, by telephone, fax, email and visit on June 9, 2006. FDA initiated recall is complete. REASON Animal and fish feeds which were possibly contaminated with ruminant based protein not labeled as "Do not feed to ruminants". VOLUME OF PRODUCT IN COMMERCE 125 tons DISTRIBUTION AL and FL
END OF ENFORCEMENT REPORT FOR AUGUST 2, 2006
###
http://www.fda.gov/bbs/topics/enforce/2006/ENF00963.html
MAD COW FEED RECALL USA EQUALS 10,878.06 TONS NATIONWIDE Sun Jul 16, 2006 09:22 71.248.128.67
RECALLS AND FIELD CORRECTIONS: VETERINARY MEDICINE -- CLASS II
______________________________
PRODUCT
a) PRO-LAK, bulk weight, Protein Concentrate for Lactating Dairy Animals, Recall # V-079-6; b) ProAmino II, FOR PREFRESH AND LACTATING COWS, net weight 50lb (22.6 kg), Recall # V-080-6; c) PRO-PAK, MARINE & ANIMAL PROTEIN CONCENTRATE FOR USE IN ANIMAL FEED, Recall # V-081-6; d) Feather Meal, Recall # V-082-6 CODE a) Bulk b) None c) Bulk d) Bulk RECALLING FIRM/MANUFACTURER H. J. Baker & Bro., Inc., Albertville, AL, by telephone on June 15, 2006 and by press release on June 16, 2006. Firm initiated recall is ongoing. REASON Possible contamination of animal feeds with ruminent derived meat and bone meal. VOLUME OF PRODUCT IN COMMERCE 10,878.06 tons DISTRIBUTION Nationwide
END OF ENFORCEMENT REPORT FOR July 12, 2006
###
http://www.fda.gov/bbs/topics/enforce/2006/ENF00960.html
PLEASE SEE THE USA MAD COW FEED BAN OF AUGUST 4, 1997, the feed ban that never was nothing more than ink on paper. ...TSS
10,000,000+ LBS. of PROHIBITED BANNED MAD COW FEED I.E. BLOOD LACED MBM IN COMMERCE USA 2007
Date: March 21, 2007 at 2:27 pm PST
RECALLS AND FIELD CORRECTIONS: VETERINARY MEDICINES -- CLASS II
___________________________________
PRODUCT
Bulk cattle feed made with recalled Darling's 85% Blood Meal, Flash Dried, Recall # V-024-2007
CODE
Cattle feed delivered between 01/12/2007 and 01/26/2007
RECALLING FIRM/MANUFACTURER
Pfeiffer, Arno, Inc, Greenbush, WI. by conversation on February 5, 2007.
Firm initiated recall is ongoing.
REASON
Blood meal used to make cattle feed was recalled because it was cross- contaminated with prohibited bovine meat and bone meal that had been manufactured on common equipment and labeling did not bear cautionary BSE statement.
VOLUME OF PRODUCT IN COMMERCE
42,090 lbs.
DISTRIBUTION
WI
___________________________________
PRODUCT
Custom dairy premix products: MNM ALL PURPOSE Pellet, HILLSIDE/CDL Prot- Buffer Meal, LEE, M.-CLOSE UP PX Pellet, HIGH DESERT/ GHC LACT Meal, TATARKA, M CUST PROT Meal, SUNRIDGE/CDL PROTEIN Blend, LOURENZO, K PVM DAIRY Meal, DOUBLE B DAIRY/GHC LAC Mineral, WEST PIONT/GHC CLOSEUP Mineral, WEST POINT/GHC LACT Meal, JENKS, J/COMPASS PROTEIN Meal, COPPINI - 8# SPECIAL DAIRY Mix, GULICK, L-LACT Meal (Bulk), TRIPLE J - PROTEIN/LACTATION, ROCK CREEK/GHC MILK Mineral, BETTENCOURT/GHC S.SIDE MK-MN, BETTENCOURT #1/GHC MILK MINR, V&C DAIRY/GHC LACT Meal, VEENSTRA, F/GHC LACT Meal, SMUTNY, A- BYPASS ML W/SMARTA, Recall # V-025-2007
CODE
The firm does not utilize a code - only shipping documentation with commodity and weights identified.
RECALLING FIRM/MANUFACTURER
Rangen, Inc, Buhl, ID, by letters on February 13 and 14, 2007. Firm initiated recall is complete.
REASON
Products manufactured from bulk feed containing blood meal that was cross contaminated with prohibited meat and bone meal and the labeling did not bear cautionary BSE statement.
VOLUME OF PRODUCT IN COMMERCE
9,997,976 lbs.
DISTRIBUTION
ID and NV
END OF ENFORCEMENT REPORT FOR MARCH 21, 2007
http://www.fda.gov/bbs/topics/enforce/2007/ENF00996.html
NEW URL
http://www.fda.gov/Safety/Recalls/EnforcementReports/2007/ucm120446.htm
Thursday, March 19, 2009
MILLIONS AND MILLIONS OF POUNDS OF MAD COW FEED IN COMMERCE USA WITH ONGOING 12 YEARS OF DENIAL NOW, WHY IN THE WORLD DO WE TO TALK ABOUT THIS ANYMORE $$$
http://madcowfeed.blogspot.com/2009/03/millions-and-millions-of-pounds-of-mad.html
Tuesday, July 14, 2009
U.S. Emergency Bovine Spongiform Encephalopathy Response Plan Summary and BSE Red Book Date: February 14, 2000 at 8:56 am PST
WHERE did we go wrong $$$
http://madcowtesting.blogspot.com/2009/07/us-emergency-bovine-spongiform.html
Transgenic mice expressing porcine prion protein resistant to classical scrapie but susceptible to sheep bovine spongiform encephalopathy and atypical scrapie. Emerg Infect Dis. 2009 Aug; [Epub ahead of print]
http://nor-98.blogspot.com/2009/07/transgenic-mice-expressing-porcine.html
Transmissible mink encephalopathy - review of the etiology
http://transmissible-mink-encephalopathy.blogspot.com/2009/07/transmissible-mink-encephalopathy.html
Wednesday, July 1, 2009
Nor98 scrapie identified in the United States J Vet Diagn Invest 21:454-463 (2009)
http://nor-98.blogspot.com/2009/07/nor98-scrapie-identified-in-united.html
Monday, June 01, 2009 Biochemical typing of pathological prion protein in aging cattle with BSE
SOMETHING TO PONDER ???
O.K. confusious asks, IF all these new atypical BSEs i.e. new strains of mad cow disease is just an 'OLD COW PRION DISEASE', why then can not the 'old human prion disease' such as the sporadic CJD, be from an 'old cow prion disease', same as the nvCJD 'young people mad cow disease' (which also happens in 74 year old), but why cannot the 'old cow prion diseases', i.e. l-BSE, h-BSE, and ibncBSE, cause the 'old people prion disease', which looks like sporadic CJD. seems that is what some of the pathology is showing ???
OH, that probably makes too much sense, and that the only answer could be that it's all just a happenstance of bad luck and or a spontaneous event, that just happens out of the clear blue sky $$$
IF this is the case, then where are all the SPONTANEOUS BSE CASES OF MAD COW DISEASE IN THE U.S.A., AND WHERE HAVE THEY BEEN BURIED IN THE USA OVER THE LAST 25 YEARS ???
http://bse-atypical.blogspot.com/2009/06/biochemical-typing-of-pathological.html
Monday, July 27, 2009
U.S.A. HIDING MAD COW DISEASE VICTIMS AS SPORADIC CJD ?
CBC’s The National
October 17, 2005
Safe To Eat?
PETER MANSBRIDGE (HOST):
SEE THE VIDEO NOW AT THE BOTTOM OF THE BLOG BELOW ;
http://creutzfeldt-jakob-disease.blogspot.com/2009/07/usa-hiding-mad-cow-disease-victims-as.html
Saturday, June 13, 2009
Monitoring the occurrence of emerging forms of Creutzfeldt-Jakob disease in the United States 2003 revisited 2009
http://cjdusa.blogspot.com/2009/06/monitoring-occurrence-of-emerging-forms.html
TSS
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