Results 151 to 160 of about 1,689 (192)

Mucosal vaccination with an attenuated maedi–visna virus clone

Vaccine, 2005
Four sheep were infected intratracheally with an attenuated molecular clone of maedi-visna virus (MVV). All four became infected. Ten months later these sheep were challenged intratracheally with a genetically similar but pathogenic clone of MVV. Four unvaccinated sheep were infected simultaneously. All sheep became infected by the challenge virus. The
Gudmundur, Pétursson, Sigrídur, Matthíasdóttir, Vilhjálmur, Svansson, Valgerdur, Andrésdóttir, Gudmundur, Georgsson, Agnes H, Martin, Gudrún, Agnarsdóttir, Eygló, Gísladóttir, Steinunn, Arnadóttir, Svava, Högnadóttir, Stefán Ragnar, Jónsson, Olafur S, Andrésson, Sigurbjörg, Torsteinsdóttir   +12 more
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Clinicopathological investigation of primary, uncomplicated maedi-visna virus infection

Veterinary Record, 1992
Maedi-visna virus infection in a flock of sheep in Scotland was associated with respiratory disease, neurological disease, mastitis and lameness. The major clinical signs were dyspnoea (particularly on exercise), progressive fore- and hindlimb ataxia and balance defects, mammary induration and multilimb lameness, occasionally with enlarged carpal ...
N J, Watt, T J, King, D, Collie, N, McIntyre, D, Sargan, I, McConnell   +5 more
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Breed susceptibility to ovine progressive pneumonia (maedi/visna) virus

Veterinary Microbiology, 1986
In this retrospective study of breed differences in susceptibility to disease caused by ovine progressive pneumonia (OPP) virus, 29 Border Leicester sheep were compared with 46 Columbia sheep. As judged by frequency and severity of clinical signs and lesions attributable to the infection, Border Leicester sheep were markedly more susceptible than ...
R C, Cutlip, H D, Lehmkuhl, K A, Brogden, J M, Sacks   +3 more
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The Origin of Lentivirus Research: Maedi-Visna Virus

Current HIV Research, 2013
Maedi and visna are contagious sheep diseases which were introduced into Iceland in 1933 by imported sheep of Karakul breed. Maedi, a slowly progressing pneumonia, and the central nervous system disease visna were shown to be transmissible in sheep and most likely caused by a virus.
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Precipitating antibodies against maedi-visna virus in experimentally infected sheep

Archiv f�r die gesamte Virusforschung, 1973
Precipitating antibody was demonstrated by the Ouchterlony technique in sera of sheep, intrapulmonary or intracerebrally infected with maedi-visna virus. Debris from virus infected cultures of sheep choroid plexus cells served as an antigen. The precipitating activity of the serum was located in the IgG-fraction.
C, Terpstra, G F, De Boer
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Development of a candidate DNA vaccine against Maedi-Visna virus

Veterinary Immunology and Immunopathology, 2007
DNA vaccine candidates against Maedi-Visna virus (MVV) infection in ovines were developed as an alternative to conventional vaccines. Candidates were constructed by cloning genes encoding the MVV gag polyprotein and gag proteins p16 and p25 fused to a beta-galactosidase reporter in a plasmid backbone.
Ana M, Henriques, Miguel, Fevereiro, Duarte M F, Prazeres, Gabriel A, Monteiro   +3 more
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Investigations of a flock heavily infected with maedi-visna virus

Veterinary Record, 1983
Following the discovery that a flock of sheep in England was infected with the virus of maedi-virus, several seropositive sheep were brought to the Central Veterinary Laboratory and kept isolated and under observation for up to three years before being further examined at necropsy.
L M, Markson, J B, Spence, M, Dawson
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Neurotoxic mechanisms of transactivating protein Tat of Maedi-Visna virus

Neuroscience Letters, 1995
Infection by lentiviruses such as human immunodeficiency virus (HIV) and Maedi-Visna virus (MVV) is associated with neurodegenerative disorders. We have investigated the neurotoxic mechanisms of a synthetic peptide of transactivating protein tat of MVV in striatal neuronal cultures.
Strijbos, P. J L M, Zamani, M. R., Rothwell, N. J., Arbuthnott, G., Harkiss, G.   +4 more
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Early pulmonary cell response during experimental maedi-visna virus infection

Veterinary Immunology and Immunopathology, 1996
A model of experimental infection with EV1, a British isolate of maedi-visna virus (MVV), has been developed. Twelve male Texel sheep were allocated to three groups and inoculated by the respiratory route with different inocula. Six of the animals received 10(7.2) tissue culture infective dose (TCID50) of MVV EV1 strain.
I, Begara, L, Luján, D D, Collie, H R, Miller, N J, Watt   +4 more
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Maedi visna virus infection: where are we now?

Livestock, 2015
Maedi visna virus infection is a chronic infectious disease of sheep that cannot be treated nor can it be prevented by vaccination. The main routes of transmission are through ingestion of infected colostrum and through nose to nose contact with infected stock.
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