Neorickettsia Ehrlichia Risticii
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Molecular detection of Neorickettsia risticii in Brazilian free-tailed bats (Tadarida brasiliensis) from Buenos Aires , Argentina
Neorickettsia risticii is the causative agent of Potomac Horse Fever, a severe febrile disease affecting horses, transmitted by trematodes species with a complex life cycle. A total of 30 insectivorous bats (Brazilian free-tailed bat Tadarida brasiliensis) were analyzed by PCR for presence of genus Anaplasma, Ehrlichia, Neorickettsia and Rickettsia. Three sa
Pesq. Vet. Bras.. Publicado em: 2013-05
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2. Ehrlichiose monocítica eqüina no Rio Grande do Sul: aspectos clínicos, anátomo-patológicos e epidemiológicos
Descreve-se um surto natural de Ehrlichiose mono-cítica eqüina (EME) ocorrido nos meses de novembro/2001 a fevereiro/2002, em uma propriedade no município de Arroio Grande, localizado à margem oeste da Lagoa Mirim, Rio Grande do Sul. De um total de 50 eqüinos, 13 foram afetados pela enfermidade e seis morreram. A morbidade foi de 26% e a letalidade 46,1
Pesquisa Veterinária Brasileira. Publicado em: 2006-06
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3. Citrate Synthase Gene Sequence: a New Tool for Phylogenetic Analysis and Identification of Ehrlichia
The sequence of the citrate synthase gene (gltA) of 13 ehrlichial species (Ehrlichia chaffeensis, Ehrlichia canis, Ehrlichia muris, an Ehrlichia species recently detected from Ixodes ovatus, Cowdria ruminantium, Ehrlichia phagocytophila, Ehrlichia equi, the human granulocytic ehrlichiosis [HGE] agent, Anaplasma marginale, Anaplasma centrale, Ehrlichia sennet
American Society for Microbiology.
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4. Two cases of Neorickettsia (Ehrlichia) risticii infection infection in horses from Nova Scotia
Two horses from Nova Scotia were diagnosed with Potomac horse fever (PHF). Polymerase chain reaction analysis was performed on formalin-fixed colon tissue or whole blood to show the presence of Neorickettsia risticii DNA, the causative agent of PHF. These are the first reported cases of PHF in the Maritime Provinces.
Canadian Veterinary Medical Association.
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5. Cross-reacting antigens between Neorickettsia helminthoeca and Ehrlichia species, shown by immunofluorescence and Western immunoblotting.
Dogs orally infected with Neorickettsia helminthoeca developed immunoglobulin G titers against Erlichia risticii, Erlichia sennetsu, and Erlichia canis similar to those against N. helminthoeca antigen, as determined by immunofluorescence. Western immunoblotting showed that the major common antigens shared among the microorganisms were 80- or 78-kDa and 64-kD
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6. Cytopathic effect, plaque formation, and lysis of Ehrlichia chaffeensis grown on continuous cell lines.
Ehrlichiae are strict intracellular bacterial pathogens that parasitize leukocytes or other blood cells. Only six agents of the tribe Ehrlichieae, namely, Cowdria ruminantium, Neorickettsia helminthoeca, Ehrlichia risticii, Ehrlichia sennetsu, Ehrlichia canis, and Ehrlichia chaffeensis, have been adapted to growth in continuous cell lines. E. chaffeensis, th
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7. Characterization of ehrlichial organisms isolated from a wild mouse.
An infectious agent was isolated from the enlarged spleen of a wild mouse, Eothenomys kageus, by intraperitoneal inoculation of the spleen homogenate into laboratory mice. The laboratory mice developed splenomegaly, and the agent was maintained by serial passage of spleen homogenates in laboratory mice. The agent in the spleen homogenate was inactivated afte