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Use of cotton rats for preclinical evaluation of measles vaccines

The continued prevalence and medical impact of measles worldwide has created interest in the development of new generations of measles vaccines. Monkeys can be used for preclinical testing of these vaccines. However, a more practical and less expensive animal model is highly…

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Nuclear and nucleolar localization of an African swine fever virus protein, l14L, that is similar to the herpes simplex virus-encoded virulence factor ICP34.5

PCR analysis of the genomes of 18 different African swine fever virus (ASFV) isolates showed that the I14L open reading frame (ORF) was present as either a long form or short form in all of the isolates. Sequencing of the ORF from eight isolates confirmed that both forms of…

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Protein tyrosine phosphatase receptor type C polypeptide (PTPRC) on human chromosome band 1q31 -> q32 localizes with marker D1S413 on a 610-kb yeast artificial chromosome

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Intracellular rate-limiting steps in MHC class I antigen processing

Quantitative aspects of the endogenous pathway of Ag processing and presentation by MHC class I molecules to CB8(+) CTL were analyzed over a wide range of Ag expression in recombinant vaccinia virus-infected cells expressing beta-galactosidase as model Ag, Only the amount of…

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Molecular characterization of the rotavirus NSP4 enterotoxin homologue from group B rotavirus

The RNA segment (Gene 10) from a human group B rotavirus which encodes the homologue of the rotavirus enterotoxin (NSP4) has been cloned and sequenced. The gene is of the same length (751 nucleotides) as its better-characterized group A rotavirus counterpart but shows…

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A rapid and accurate assay for assessing the cytotoxicity of viral proteins

A fluorescence-based assay is presented for measuring the cytoxicity of viral proteins added exogenously to cells. The assay is based on the use of two fluorescent dyes, calcein-AM and ethidium homodimer (EtD-1) to specifically stain living and dead cells respectively and…

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The alpha(v)beta 6 integrin receptor for foot-and-mouth disease virus is expressed constitutively on the epithelial cells targeted in cattle

Field strains of Foot-and-mouth disease virus (FMDV) use a number of alpha v-integrins as receptors to initiate infection on cultured cells, and integrins are believed to be the receptors used to target epithelial cells in animals. In this study, immunofluorescence confocal…

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Rapid activation of spleen dendritic cell subsets following lymphocytic choriomeningitis virus infection of mice: analysis of the involvement of type 1 IFN

In this study, we report the dynamic changes in activation and functions that occur in spleen dendritic cell (sDC) subsets following infection of mice with a natural murine pathogen, lymphocytic choriomeningitis virus (LCMV). Within 24 h postinfection (pi), sDCs acquired the…

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Expression of proinflammatory cytokines by hepatic macrophages in acute classical swine fever

Fourteen pigs were inoculated with the 'Alfort 187' strain of classical swine fever (CSF) virus and killed in pairs at 2, 4, 7, 9, 11, 14 or 17 days post-inoculation for histopathological, ultrastructural and immunohistochemical examination. For the latter method, the…

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The glycosylation pattern of baculovirus expressed envelope protein E2 affects its ability to prevent infection with bovine viral diarrhoea virus

We have investigated the role of glycosylation of the envelope glycoprotein E2 of bovine viral diarrhoea virus (BVDV), produced in insect cells, in BVDV infection. When amino acids predicated to code for the C-terminal N-linked glycosylation site were mutated the resulting…