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- W2063050557 abstract "Nitric-oxide synthase (NOS) is responsible for the synthesis of nitric oxide which serves as a neural messenger in the central nervous system. NOS activity was markedly inhibited in brains of mice and hamsters and neuroblastoma cells infected with scrapie (ScN2a). The decrease in activity was in accordance with decreased NADPH-diaphorase-positive cells and decreased staining of NOS-positive cells demonstrated by specific anti-NOS antibodies. However, the specific nNOS mRNA in ScN2a was elevated when compared with normal neuroblastoma cells (N2a). Immunoblotting of fractions from these cell lines with an anti-nNOS monoclonal antibody revealed a band of nNOS from N2a and two bands with a lower molecular weight in ScN2a cells. Furthermore, NOS in ScN2a cells was insoluble in nondenaturing detergents. This insolubility is one of the landmark properties of PrPSc. It is, therefore, possible that nNOS in scrapie-infected cells and brains is aberrantly folded, resulting in an insoluble and inactive enzyme. Nitric-oxide synthase (NOS) is responsible for the synthesis of nitric oxide which serves as a neural messenger in the central nervous system. NOS activity was markedly inhibited in brains of mice and hamsters and neuroblastoma cells infected with scrapie (ScN2a). The decrease in activity was in accordance with decreased NADPH-diaphorase-positive cells and decreased staining of NOS-positive cells demonstrated by specific anti-NOS antibodies. However, the specific nNOS mRNA in ScN2a was elevated when compared with normal neuroblastoma cells (N2a). Immunoblotting of fractions from these cell lines with an anti-nNOS monoclonal antibody revealed a band of nNOS from N2a and two bands with a lower molecular weight in ScN2a cells. Furthermore, NOS in ScN2a cells was insoluble in nondenaturing detergents. This insolubility is one of the landmark properties of PrPSc. It is, therefore, possible that nNOS in scrapie-infected cells and brains is aberrantly folded, resulting in an insoluble and inactive enzyme." @default.
- W2063050557 created "2016-06-24" @default.
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- W2063050557 date "1996-07-01" @default.
- W2063050557 modified "2023-09-30" @default.
- W2063050557 title "Effect of Scrapie Infection on the Activity of Neuronal Nitric-oxide Synthase in Brain and Neuroblastoma Cells" @default.
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- W2063050557 doi "https://doi.org/10.1074/jbc.271.28.16856" @default.
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