Experimental Transmission of H-type Bovine Spongiform Encephalopathy to Bovinized Transgenic Mice
Vet Pathol 0300985810382672, first published on October 4, 2010
Experimental Transmission of H-type Bovine Spongiform Encephalopathy to Bovinized Transgenic Mice
H. Okada [email protected] Prion Disease Research Center, National Institute of Animal Health, Tsukuba, K. Masujin Prion Disease Research Center, National Institute of Animal Health, Tsukuba, Y. Imamaru Prion Disease Research Center, National Institute of Animal Health, Tsukuba, M. Imamura Prion Disease Research Center, National Institute of Animal Health, Tsukuba, Y. Matsuura Prion Disease Research Center, National Institute of Animal Health, Tsukuba, S. Mohri Prion Disease Research Center, National Institute of Animal Health, Tsukuba, S. Czub Animal Disease Research Institute, Canadian Food Inspection Agency, T. Yokoyama Prion Disease Research Center, National Institute of Animal Health, Tsukuba,
Abstract
To characterize the biological and biochemical properties of H-type bovine spongiform encephalopathy (BSE), a transmission study with a Canadian H-type isolate was performed with bovinized transgenic mice (TgBoPrP), which were inoculated intracerebrally with brain homogenate from cattle with H-type BSE. All mice exhibited characteristic neurologic signs, and the subsequent passage showed a shortened incubation period. The distribution of disease-associated prion protein (PrPSc) was determined by immunohistochemistry, Western blot, and paraffin-embedded tissue (PET) blot. Biochemical properties and higher molecular weight of the glycoform pattern were well conserved within mice. Immunolabeled granular PrPSc, aggregates, and/or plaque-like deposits were mainly detected in the following brain locations: septal nuclei, subcallosal regions, hypothalamus, paraventricular nucleus of the thalamus, interstitial nucleus of the stria terminalis, and the reticular formation of the midbrain. Weak reactivity was detected by immunohistochemistry and PET blot in the cerebral cortex, most thalamic nuclei, the hippocampus, medulla oblongata, and cerebellum. These findings indicate that the H-type BSE prion has biological and biochemical properties distinct from those of C-type and L-type BSE in TgBoPrP mice, which suggests that TgBoPrP mice constitute a useful animal model to distinguish isolates from BSE-infected cattle.
© 2010 Sage Publications, Inc.
http://vet.sagepub.com/content/early/20 ... 2.abstract
Greetings,
I have been most interested to see IF the h-BSE (h-BSE or g-h-BSEalabama???), but i have been most interested to see if in fact this atypical h-BSE is more virulent than c-BSE, as is the L-BSE (Italian strain) has been documented to be. We know from the studies of Kong et al that h-BSE will transmit to TG human mice;
BSE-H is also transmissible in our humanized Tg mice.
The possibility of more than two atypical BSE strains will be discussed.
Supported by NINDS NS052319, NIA AG14359, and NIH AI 77774.
http://www.prion2009.com/sites/default/ ... tracts.pdf
HOWEVER, as to the virulance of it one way or the other compared to c-BSE and or L-BSE, i don't think no one has said yet or not? interesting this debate of the h-BSE TEXAS (2nd mad cow finally confirmed 7 months after the fact, and an act of Congress), compared to the g-h-BSEalabama strain documented in Alabama, that is identicle to the new human CJD in the USA that is killing the young and old, with clinical long duration, and different symptoms in some cases too, but not related to this ??? ALSO, this IBNC BSE, might this be the g-h-BSEalabama strain?
FOR anyone interested, please see my concerns here ;
Thursday, October 07, 2010
Experimental Transmission of H-type Bovine Spongiform Encephalopathy to Bovinized Transgenic Mice
http://bse-atypical.blogspot.com/2010/1 ... -type.html
Vet Pathol 0300985810382672, first published on October 4, 2010
Experimental Transmission of H-type Bovine Spongiform Encephalopathy to Bovinized Transgenic Mice
H. Okada [email protected] Prion Disease Research Center, National Institute of Animal Health, Tsukuba, K. Masujin Prion Disease Research Center, National Institute of Animal Health, Tsukuba, Y. Imamaru Prion Disease Research Center, National Institute of Animal Health, Tsukuba, M. Imamura Prion Disease Research Center, National Institute of Animal Health, Tsukuba, Y. Matsuura Prion Disease Research Center, National Institute of Animal Health, Tsukuba, S. Mohri Prion Disease Research Center, National Institute of Animal Health, Tsukuba, S. Czub Animal Disease Research Institute, Canadian Food Inspection Agency, T. Yokoyama Prion Disease Research Center, National Institute of Animal Health, Tsukuba,
Abstract
To characterize the biological and biochemical properties of H-type bovine spongiform encephalopathy (BSE), a transmission study with a Canadian H-type isolate was performed with bovinized transgenic mice (TgBoPrP), which were inoculated intracerebrally with brain homogenate from cattle with H-type BSE. All mice exhibited characteristic neurologic signs, and the subsequent passage showed a shortened incubation period. The distribution of disease-associated prion protein (PrPSc) was determined by immunohistochemistry, Western blot, and paraffin-embedded tissue (PET) blot. Biochemical properties and higher molecular weight of the glycoform pattern were well conserved within mice. Immunolabeled granular PrPSc, aggregates, and/or plaque-like deposits were mainly detected in the following brain locations: septal nuclei, subcallosal regions, hypothalamus, paraventricular nucleus of the thalamus, interstitial nucleus of the stria terminalis, and the reticular formation of the midbrain. Weak reactivity was detected by immunohistochemistry and PET blot in the cerebral cortex, most thalamic nuclei, the hippocampus, medulla oblongata, and cerebellum. These findings indicate that the H-type BSE prion has biological and biochemical properties distinct from those of C-type and L-type BSE in TgBoPrP mice, which suggests that TgBoPrP mice constitute a useful animal model to distinguish isolates from BSE-infected cattle.
© 2010 Sage Publications, Inc.
http://vet.sagepub.com/content/early/20 ... 2.abstract
Greetings,
I have been most interested to see IF the h-BSE (h-BSE or g-h-BSEalabama???), but i have been most interested to see if in fact this atypical h-BSE is more virulent than c-BSE, as is the L-BSE (Italian strain) has been documented to be. We know from the studies of Kong et al that h-BSE will transmit to TG human mice;
BSE-H is also transmissible in our humanized Tg mice.
The possibility of more than two atypical BSE strains will be discussed.
Supported by NINDS NS052319, NIA AG14359, and NIH AI 77774.
http://www.prion2009.com/sites/default/ ... tracts.pdf
HOWEVER, as to the virulance of it one way or the other compared to c-BSE and or L-BSE, i don't think no one has said yet or not? interesting this debate of the h-BSE TEXAS (2nd mad cow finally confirmed 7 months after the fact, and an act of Congress), compared to the g-h-BSEalabama strain documented in Alabama, that is identicle to the new human CJD in the USA that is killing the young and old, with clinical long duration, and different symptoms in some cases too, but not related to this ??? ALSO, this IBNC BSE, might this be the g-h-BSEalabama strain?
FOR anyone interested, please see my concerns here ;
Thursday, October 07, 2010
Experimental Transmission of H-type Bovine Spongiform Encephalopathy to Bovinized Transgenic Mice
http://bse-atypical.blogspot.com/2010/1 ... -type.html
