16 documents found, page 1 of 2
Implications of domestic dogs in the epidemiology of Rickettsia parkeri strain ...
Fournier,Gislene Fátima da Silva Rocha; Pinter,Adriano; Muñoz-Leal,Sebastian; Labruna,Marcelo Bahia; Lopes,Marcos Gomes; Martins,Thiago FernandesAbstract This study aimed to evaluate the occurrence of diseases transmitted by Amblyomma ovale in 61 dogs monitored for three years through collections of ticks and blood, interviews, telemetry and camera traps in three areas of Serra do Mar State Park, Brazil. Blood samples were used to investigate infection by Rangelia vitalii by real-time TaqMan PCR and Rickettsia parkeri by IIFA. The collected ticks were s...
Rickettsial infection in equids, opossums and ticks in the municipality of Mont...
Ueno,Tatiana Evelyn Hayama; Cutolo,André Antonio; Martins,Thiago Fernandes; Moraes-Filho,Jonas; Azevedo,Sérgio Santos de; Labruna,Marcelo BahiaAbstract The aim of this study was to investigate rickettsial infection in equids, opossums and ticks in the municipality of Monte Mor, a place where a Brazilian spotted fever case occurred in 2005. In addition, characteristics possibly associated with seropositivity in horses were analyzed. Serum samples from horses, mules and opossums (Didelphis albiventris) were subjected to indirect immunofluorescence assay...
Exposure of Baixadeiro horses to Rickettsia spp. and to ticks infected by Ricke...
Amorim Filho,Edvaldo Franco; Costa,Francisco Borges; Moraes-Filho,Jonas; Santos,Ana Clara Gomes dos; Vale,Tássia Lopes do; Costa,Andréa Pereira daABSTRACT: The aim of this study was to investigate exposure of Baixadeiro horses to Rickettsia spp. and to ticks infected by Rickettsia in the Baixada Maranhense (lowlands) micro-region, state of Maranhão. A total of 258 horses were tested for Rickettsia rickettsii, Rickettsia amblyommatis and Rickettsia bellii using the immunofluorescence assay (IFA). Overall, 58.91% (152/258) of the horses were seroreactive f...
Serosurvey of Rickettsia spp. in small mammals from Mato Grosso do Sul state, B...
Binder,Lina de Campos; Krawczak,Felipe da Silva; Sponchiado,Jonas; Melo,Geruza Leal; Moraes-Filho,Jonas; Bastos,Fernanda Aparecida NieriABSTRACT: This study aimed to evaluate exposure of wild small mammals to spotted fever group (SFG) rickettsiae in Mato Grosso do Sul State, central-western Brazil. Serum samples of 68 small mammals were analyzed by indirect immunofluorescence assay (IFA) against six Rickettsia species from Brazil. Overall, 37.5% (9/24) marsupials and 6.8% (3/44) small rodents were seroreactive to at least one of the Rickettsia ...
Ehrlichia canis and Rickettsia spp. in dogs from urban areas in Paraiba state, ...
Rotondano,Tereza Emmanuelle de Farias; Krawczak,Felipe da Silva; Barbosa,Werona de Oliveira; Moraes-Filho,Jonas; Bastos,Fernanda NieriAbstract The aims of our study was to identify Ehrlichia canis and antibodies against Rickettsia spp. belonging to the spotted fever group (SFG) in dogs sampled from Paraiba state, northeastern Brazil. Blood and serum samples collected by convenience from dogs in urban areas of five municipalities were analyzed by real-time PCR for the detection of E. canis DNA and by immunofluorescence assay test (IFAT) for th...
Investigação sorológica de Rickettsia rickettsii e Coxiella burnetii em caprino...
Guimarães,Maíra F.; Araujo,Andreina de C.; Freire,Davi P.; Machado,Dália M.R.; Martins,Nara N.V.M.; Moraes-Filho,Jonas; Horta,Mauricio C.RESUMO: As doenças causadas por bactérias dos gêneros Rickettsia e Coxiella possuem como vetores artrópodes hematófagos, na sua maioria carrapatos, que atuam diretamente na transmissão de patógenos responsáveis por enfermidades de grande impacto na medicina veterinária e humana. O presente estudo objetivou realizar uma investigação sorológica de Rickettsia rickettsii e Coxiella burnetii em caprinos e ovinos cri...
A serological and molecular survey of Babesia vogeli, Ehrlichia canis and Ricke...
Costa,Andréa Pereira da; Costa,Francisco Borges; Labruna,Marcelo Bahia; Silveira,Iara; Moraes-Filho,Jonas; Soares,João FábioThis study evaluated exposure and infection by tick-borne agents (Babesia vogeli, Ehrlichia canis and Rickettsia spp.) in 172 dogs in rural areas and 150 dogs in urban areas of the municipality of Chapadinha, state of Maranhão, northeastern Brazil, using molecular and serological methods. Overall, 16.1% of the sampled dogs (52/322) were seroreactive to B. vogeli, with endpoint titers ranging from 40 to 640. For...
Recombinant gp19 as a potential antigen for detecting anti-Ehrlichia canis anti...
Oliveira,Rômulo Silva de; Cunha,Rodrigo Casquero; Moraes-Filho,Jonas; Gonçales,Relber Aguiar; Lara,Ana Paula de Souza Stori deThe canine monocytic ehrlichiosis, caused by Ehrlichia canis, is endemic in several regions of Brazil. Some serological diagnostic techniques using immunodominant proteins of E. canis as antigens are available, but their specificities and sensitivities are questionable. Based on this, the objective of this study was to test the antigenic potential of the recombinant gp19 protein (rGP19) for subsequent use in di...
Primeiro caso de febre maculosa brasileira branda associada à artrite
Bonoldi,Virgínia Lucia Nazario; Marangoni,Roberta Gonçalves; Gauditano,Giancarla; Moraes-Filho,Jonas; Labruna,Marcelo Bahia; Yoshinari,Natalino HajimeDescrevemos o primeiro caso brasileiro de Riquetsiose branda, agravada por monoartrite em joelho, em adulto jovem picado por carrapato na perna esquerda na região de Camburi, localizada no município de São Sebastião, sul da região costeira do estado de São Paulo, Mata Atlântica, Brasil. O paciente apresentou uma escara de inoculação no local da picada do carrapato, associada ao aumento ganglionar em virilha esq...
Detection of anti: Rickettsia spp. antibodies in domestic chickens of extensive...
Maciel,Jonas Fernandes; Krawczak,Felipe da Silva; Oliveira,Caroline Sobotyk de; Moraes-Filho,Jonas; Labruna,Marcelo Bahia; Botton,Sônia de AvilaThe goal of this study was to investigate anti-Rickettsia spp. antibodies in sera of domestic chickens (Gallus gallus domesticus) of extensive breeding in Cerro Largo county, considered an endemic area for spotted fever in the State of Rio Grande do Sul, Brazil. Three hundred blood samples were collected and anti-Rickettsia spp. antibodies were evaluated by indirect immunofluorescence assay (IFA) in the sera ob...