Congo red inhibition of scrapie agent replication
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چکیده
منابع مشابه
Congo red inhibition of scrapie agent replication.
Congo red inhibits the accumulation of protease-resistant PrP in scrapie-infected mouse neuroblastoma cells. Here we show that Congo red also inhibits the replication of scrapie infectivity in these cells. This observation is consistent with the idea that protease-resistant PrP is a vital component of the scrapie agent or that agent replication depends on the presence of protease-resistant PrP ...
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BALB/c and severe combined immunodeficiency (SCID) mice were inoculated intracerebrally or intraperitoneally with scrapie agent strain ME7 to examine the role of functional lymphocytes and follicular dendritic cells in splenic infectivity and PrPSc accumulation. Intracerebrally inoculated BALB/c and SCID mice developed the clinical signs and microscopic lesions characteristic of scrapie. Spleen...
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Although scrapie has been studied for many years, the nature of the scrapie agent remains obscure (14). In spite of a number of unusual properties, this agent has been generally considered to be a virus (9, 13). In a previous study, repeated daily injections of 6,000 units of interferon failed to protect mice challenged intracerebrally (ic) with about 5,000 median lethal dose (LD50) of the scra...
متن کامل"Congo" red: out of Africa?
CONTEXT Congo red is the essential histologic stain for demonstrating the presence of amyloidosis in fixed tissues. To the best of my knowledge, nothing has been written about why the stain is named "Congo." OBJECTIVE To understand the etymology and history of the Congo red histologic stain. DESIGN Primary sources were consulted extensively, including 19th-century corporate documents, newsp...
متن کاملThe congo red stain revisited.
The Congo red stain has undergone several modifications since it was first used by Bennhold in 1922 in order to increase the specificity for staining amyloid. Most of the laboratories in the United States use the method of Puchtler which uses alkaline Congo red solution. Some of the variables associated with the procedure were investigated by us. Our results showed the following: (1) amyloid sh...
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ژورنال
عنوان ژورنال: Journal of Virology
سال: 1993
ISSN: 0022-538X,1098-5514
DOI: 10.1128/jvi.67.10.6270-6272.1993