The Nasal Cavity Is a Route for Prion Infection in Hamsters

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The nasal cavity is a route for prion infection in hamsters.

Animals that naturally acquire the prion diseases have a well-developed olfactory sense that they utilize for a variety of basic behaviors. To assess the potential for the nasal cavity to serve as a point of entry for prion diseases, a small amount of prion-infected brain homogenate was placed inferior to the nostrils of hamsters, where it was immediately sniffed into the nasal cavity. Hamsters...

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The astonishing recognition that self-propagating changes in protein structure may be at the basis of spongiform encephalopathies is changing our views of transmissible diseases. Infectious agents consisting of abnormally folded proteins (i.e., the prion) can propagate in host organisms using previously unrecognized routes and invade the brain after a dangerous liaison with the immune system. T...

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Prion infection of oral and nasal mucosa.

Centrifugal spread of the prion agent to peripheral tissues is postulated to occur by axonal transport along nerve fibers. This study investigated the distribution of the pathological isoform of the protein (PrP(Sc)) in the tongues and nasal cavities of hamsters following intracerebral inoculation of the HY strain of the transmissible mink encephalopathy (TME) agent. We report that PrP(Sc) depo...

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Pseudallescheria boydii infection of the nasal cavity of a horse.

An 18-year-old 454-kg (1,000-lb) American Quarter Horse gelding was evaluated because of chronic intermittent malodorous right-sided nasal discharge. Endoscopy revealed a mycotic plaque in the nasal cavity adjacent to the nasomaxillary opening of the right caudal maxillary sinus. The nasomaxillary opening appeared to be larger than normal. Fungal culture of specimens of the mycotic plaque yield...

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ژورنال

عنوان ژورنال: Journal of Virology

سال: 2007

ISSN: 0022-538X,1098-5514

DOI: 10.1128/jvi.02649-06