Results 1 to 10 of about 7,411 (207)

Experimental infection of dogs with a Brazilian strain of Rickettsia rickettsii: clinical and laboratory findings [PDF]

Memorias do Instituto Oswaldo Cruz, 2008
The bacterium Rickettsia rickettsii is the etiological agent of an acute, severe disease called Rocky Mountain spotted fever in the United States or Brazilian spotted fever (BSF) in Brazil.
Eliane M Piranda, João Luis H Faccini, Adriano Pinter, Tais B Saito, Richard C Pacheco, Mitika K Hagiwara, Marcelo B Labruna   +6 more
doaj   +4 more sources

Serosurvey of antibodies against spotted fever group Rickettsia spp. in horse farms in Northern Paraná, Brazil Soroprevalência de anticorpos contra Rickettsia spp. do grupo febre maculosa em equinos de haras no Norte do Paraná, Brasil [PDF]

Revista Brasileira de Parasitologia Veterinária, 2010
Brazilian spotted fever (BSF) is an emerging disease most likely caused by Rickettsia rickettsii. The objective of the present study was to estimate the seroprevalence of BSF rickettsia infections in equines from six horse farms located in Londrina ...
Katia Tamekuni, Roberta dos Santos Toledo, Mauro de Freitas Silva Filho, Valeska Bender Haydu, Richard Campos Pacheco, José Henrique Cavicchioli, Marcelo Bahia Labruna, John Stephen Dumler, Odilon Vidotto   +8 more
doaj   +4 more sources

Seroprevalence of Rickettsia bellii and Rickettsia felis in dogs, São José dos Pinhais, State of Paraná, Brazil Soroprevalência de Rickettsia bellii e Rickettsia felis em cães, São José dos Pinhais, Paraná, Brasil [PDF]

Revista Brasileira de Parasitologia Veterinária, 2010
Brazilian spotted fever (BSF) is a vector-borne zoonosis caused by Rickettsia rickettsii bacteria. Dogs can be host sentinels for this bacterium. The aim of the study was to determine the presence of antibodies against Rickettsia spp.
Fernanda Silva Fortes, Iara Silveira, Jonas Moraes-Filho, Ronaldo Viana Leite, José Edivaldo Bonacim, Alexander Welker Biondo, Marcelo Bahia Labruna, Marcelo Beltrão Molento   +7 more
doaj   +4 more sources

TRIM56-mediated production of type I interferon inhibits intracellular replication of Rickettsia rickettsii [PDF]

Microbiology Spectrum
Rickettsia rickettsii (R. rickettsii), the causative agent of Rocky Mountain spotted fever (RMSF), is the most pathogenic member among Rickettsia spp.
Ruxi Cheng, Chunyu Zhou, Mingliang Zhao, Shan Zhang, Weiqiang Wan, Yonghui Yu, Bohai Wen, Jun Jiao, Xiaolu Xiong, Qin Xu, Xuan OuYang   +10 more
doaj   +2 more sources

Survey of vector-borne agents in feral cats and first report of Babesia gibsoni in cats on St Kitts, West Indies [PDF]

BMC Veterinary Research, 2017
Background As there is little data on vector-borne diseases of cats in the Caribbean region and even around the world, we tested feral cats from St Kitts by PCR to detect infections with Babesia, Ehrlichia and spotted fever group Rickettsia (SFGR) and ...
Patrick John Kelly, Liza Köster, Jing Li, Jilei Zhang, Ke Huang, Gillian Carmichael Branford, Silvia Marchi, Michel Vandenplas, Chengming Wang   +8 more
doaj   +3 more sources

Study of infection by Rickettsiae of the spotted fever group in humans and ticks in an urban park located in the City of Londrina, State of Paraná, Brazil [PDF]

Revista da Sociedade Brasileira de Medicina Tropical, 2011
INTRODUCTION: Spotted fevers are emerging zoonoses caused by Rickettsia species in the spotted fever group (SFG). Rickettsia rickettsii is the main etiologic agent of Brazilian spotted fever (BSF) and it is transmitted by Amblyomma spp. ticks.
Roberta Santos Toledo, Katia Tamekuni, Mauro de Freitas Silva Filho, Valeska Bender Haydu, Richard Campos Pacheco, Marcelo Bahia Labruna, John Stephen Dumler, Odilon Vidotto   +7 more
doaj   +4 more sources

Experimental infection of wild boars (Sus scrofa) with Rickettsia rickettsii and evaluation of the transmission potential to Amblyomma sculptum ticks [PDF]

Parasites & Vectors
Background Brazilian spotted fever is a tick-borne disease caused by the bacterium Rickettsia rickettsii, whose main vector in Brazil is the tick Amblyomma sculptum.
Lucianne Cardoso Neves, Lina de Campos Binder, Warley Vieira de Freitas Paula, Nicolas Jalowitzki de Lima, Ennya Rafaella Neves Cardoso, Rayane Almeida Santos, Raphaela Bueno Mendes Bittencourt, Gracielle Teles Pádua, Gabriel Cândido dos Santos, Mariana Avelar Tavares, Maria Carolina de Azevedo Serpa, Adriano Pinter, Artur Luiz de Almeida Felicio, Marcelo B. Labruna, Felipe da Silva Krawczak   +14 more
doaj   +2 more sources

Simultaneous serological assessment of four zoonotic rickettsiae among dogs near the United States-Mexico border. [PDF]

PLoS Neglected Tropical Diseases
Obligately intracellular rickettsiae cause a broad spectrum of disease in humans and animals, ranging from mild illness to life-threatening infections. Multiple species co-circulate along the southern United States of America-northern Mexico border, yet ...
Francesca Rubino, Sarah A Hamer, Andres M López-Pérez, Samantha Schuchman, Kailyn Lozano, Alexandra Saffold, Mario A Rodríguez-Pérez, Nadia A Fernández-Santos, Janet Foley   +8 more
doaj   +2 more sources

Rickettsia tillamookensis-like strain in brown dog ticks in Brazil [PDF]

Parasites & Vectors
Brown dog ticks (Rhipicephalus linnaei) collected from dogs in northeastern Brazil in 2015 tested positive for a rickettsial organism phylogenetically related to Rickettsia tillamookensis (referred to as R. tillamookensis-like).
Lucas Lisboa Nunes Bonifácio, Kamila Gaudêncio da Silva Sales, Ennya Rafaella Neves Cardoso, Felipe da Silva Krawczak, Filipe Dantas-Torres   +4 more
doaj   +2 more sources

Autophagy facilitates intracellular survival of pathogenic rickettsiae in macrophages via evasion of autophagosomal maturation and reduction of microbicidal pro-inflammatory IL-1 cytokine responses

Microbiology Spectrum, 2023
The genus Rickettsia is comprised of obligate intracellular bacterial parasites of a wide range of arthropod and vertebrate hosts. Some Rickettsia species (spp.) are responsible for serious human diseases globally.
Oliver H. Voss, Hodalis Gaytan, Saif Ullah, Mohammad Sadik, Imran Moin, M. Sayeedur Rahman, Abdu F. Azad   +6 more
doaj   +1 more source