Results 41 to 50 of about 7,697 (229)

Detecção de anticorpos anti-Rickettsia rickettsii em cães residentes em área negligenciada no município de São Paulo, SP, Brasil [PDF]

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2020
RESUMO A febre maculosa brasileira (FMB), descrita inicialmente nos Estados Unidos como febre maculosa das Montanhas Rochosas, é uma antropozoonose relatada apenas no continente americano e causada pela bactéria Rickettsia rickettsii.
Z.Ê.S. Souza, B.V. Moraes, F.S. Krawczak, L. Zulzke, T.V. Carvalho, A.O. Sousa, R.G. Agopian, A. Marcili, M.B. Labruna, J. Moraes-Filho   +9 more
doaj   +1 more source

Production and characterization of monoclonal antibodies to Rickettsia rickettsii [PDF]

Infection and Immunity, 1984
Five mouse ascitic fluids (MAFs) containing monoclonal antibody to Rickettsia rickettsii were produced from three original fusions by murine hybridoma technology. The five MAFs were fractionated and purified; each contained monoclonal antibody of the immunoglobulin G2a subclass.
J. V. Lange, David H. Walker
openaire   +3 more sources

Genetic sequencing of a 1944 Rocky Mountain spotted fever vaccine

Scientific Reports, 2023
Rocky Mountain spotted fever (RMSF) is a rapidly progressive and often fatal tick-borne disease caused by Rickettsia rickettsii. Its discovery and characterization by Howard Ricketts has been hailed as a remarkable historical example of detection and ...
Yongli Xiao, Paul A. Beare, Sonja M. Best, David M. Morens, Marshall E. Bloom, Jeffery K. Taubenberger   +5 more
doaj   +1 more source

Serological evidence of Rickettsia in horses from a semi-arid Brazilian region

Revista Brasileira de Parasitologia Veterinária, 2021
Brazilian spotted fever (BSF) is a common tick-borne disease caused by Rickettsia rickettsii. Horses are the primary hosts of the main vector, Amblyomma sculptum, and are considered efficient sentinels for circulation of Rickettsia. Therefore, the aim of
Ila Ferreira Farias, Eline Almeida Rodrigues de Souza, Maria Carolina de Azevedo Serpa, Flávio Silva Palha, Glauber Meneses Barboza de Oliveira, Marcelo Bahia Labruna, Mauricio Claudio Horta   +6 more
doaj   +1 more source

Spotted fever group rickettsial infection in dogs and their ticks from domestic–wildlife interface areas in southeastern Brazil

Revista Brasileira de Parasitologia Veterinária, 2020
Rickettsia rickettsii is the causative agent of Brazilian spotted fever (BSF), for which humans and dogs are both susceptible. Dogs are sentinels in serological surveys, however, canine disease is rarely reported.
Sabrina Destri Emmerick Campos, Nathalie Costa da Cunha, Camila de Souza Cerqueira Machado, Niara Vanat Nadal, Eloy Silva Seabra Junior, Erich Loza Telleria, Matheus Dias Cordeiro, Helena Keiko Toma, Nádia Regina Pereira Almosny   +8 more
doaj   +1 more source

Rickettsia infection in five areas of the state of São Paulo, Brazil

Memorias do Instituto Oswaldo Cruz, 2007
This study investigated rickettsial infection in animals, humans, ticks, and fleas collected in five areas of the state of São Paulo. Eight flea species (Adoratopsylla antiquorum antiquorum, Ctenocephalides felis felis, Polygenis atopus, Polygenis ...
Maurício C Horta, Marcelo B Labruna, Adriano Pinter, Pedro M Linardi, Teresinha T S Schumaker   +4 more
doaj   +1 more source

Identification of novel surface-exposed proteins of Rickettsia rickettsii by affinity purification and proteomics. [PDF]

PLoS ONE, 2014
Rickettsia rickettsii, the causative agent of Rocky Mountain spotted fever, is the most pathogenic member among Rickettsia spp. Surface-exposed proteins (SEPs) of R. rickettsii may play important roles in its pathogenesis or immunity.
Wenping Gong, Xiaolu Xiong, Yong Qi, Jun Jiao, Changsong Duan, Bohai Wen   +5 more
doaj   +1 more source

Anti rickettsia-antibody for spotted fever group in horses and dogs in the North of Paraná Stated, Brazil [PDF]

, 2010
The Brazilian Spotted Fever (BSF) is a zoonosis that can be fatal if not trteated. As there are few studies of the BSF in the Paraná State, the occurrence of BSF was serologically investigated in dogs and horses by indirect immunofluorescence assay (IFA),
GALHARDO, J.A., LABRUNA, M.B., OTOMURA, F.H., PACHECO, R.C., RIBEIRO, M.G., SANGIONI, L.A., TEODORO, U.   +6 more
core   +2 more sources

Comparative ultrastructural study on the cell envelopes of Rickettsia prowazekii, Rickettsia rickettsii, and Rickettsia tsutsugamushi [PDF]

Infection and Immunity, 1978
Rickettsia tsutsugamushi differs from other rickettsiae in its cell envelope organization. The differences were made evident through a comparative study of the outer envelope of R. tsutsugamushi, R. prowazekii, and R. rickettsii by electron microscopy.
David Silverman, Charles L. Wisseman
openaire   +3 more sources

Rickettsia felis infection in cat fleas Ctenocephalides felis felis [PDF]

, 2010
The present study evaluated the rickettsial infection in a laboratory colony of cat fleas, Ctenocephalides felis felis (Bouche) in Brazil. All flea samples (30 eggs, 30 larvae, 30 cocoons, 30 males, and 30 females) tested by polymerase chain reaction ...
CORREIA, Thaís R., FERNANDES, Julio I., HORTA, Maurício Cláudio, LABRUNA, Marcelo Bahia, RICHTZENHAIN, Leonardo José, SCOTT, Fabio B.   +5 more
core   +2 more sources