Results 1 to 10 of about 1,381 (193)

Seasonal dynamics of Amblyomma sculptum: a review [PDF]

Parasites & Vectors, 2022
Background Amblyomma sculptum is a hard tick that is associated with domestic animals and the transmission of Brazilian spotted fever. This association has motivated several field studies on this ixodid tick within its distribution area in South America.
Luiza Gabriella Ferreira de Paula, Rafael Moreira do Nascimento, Artur de Oliveira Franco, Matias Pablo Juan Szabó, Marcelo Bahia Labruna, Caio Monteiro, Felipe da Silva Krawczak   +6 more
doaj   +6 more sources

Comparative Susceptibility of Different Populations of Amblyomma sculptum to Rickettsia rickettsii [PDF]

Frontiers in Physiology, 2019
The bacterium Rickettsia rickettsii is the etiological agent of Brazilian spotted fever (BSF), which is transmitted in Brazil mainly by the tick Amblyomma sculptum. Herein, larvae and nymphs of six populations of A. sculptum were exposed to R. rickettsii
Monize Gerardi, Alejandro Ramírez-Hernández, Lina C. Binder, Felipe S. Krawczak, Fábio Gregori, Marcelo B. Labruna   +5 more
doaj   +7 more sources

Amblyomma sculptum Salivary PGE2 Modulates the Dendritic Cell-Rickettsia rickettsii Interactions in vitro and in vivo [PDF]

Frontiers in Immunology, 2019
Amblyomma sculptum is an important vector of Rickettsia rickettsii, causative agent of Rocky Mountain spotted fever and the most lethal tick-borne pathogen affecting humans. To feed on the vertebrate host's blood, A. sculptum secretes a salivary mixture,
Eliane Esteves, Bruna Bizzarro, Francisco Borges Costa, Alejandro Ramírez-Hernández, Ana Paula Ferranti Peti, Allan Henrique Depieri Cataneo, Pryscilla Fanini Wowk, Rodolfo Pessato Timóteo, Marcelo Bahia Labruna, Pedro Ismael Silva Junior, Célio Lopes Silva, Lúcia Helena Faccioli, Andréa Cristina Fogaça, Andréa Cristina Fogaça, Carlos Arterio Sorgi, Anderson Sá-Nunes, Anderson Sá-Nunes   +16 more
doaj   +7 more sources

First report of Amblyomma sculptum (Amblyomma cajennense complex) in a Brazilian state classified as a silent area for human rickettsiosis [PDF]

Veterinary World, 2023
Background and Aim: Studies on ticks of public health concern in equine husbandry are scarce in the Northeastern region of Brazil. This study aimed to investigate the presence of ticks on horses in the State of Alagoas, which is classified as a silent ...
Bruna Costa da Gama, Thiago Fernandes Martins, Marcelo Bahia Labruna, Rafael Felipe da Costa Vieira, Jonatas Campos de Almeida   +4 more
doaj   +4 more sources

Rickettsia amblyommii infecting Amblyomma sculptum in endemic spotted fever area from southeastern Brazil [PDF]

Memorias do Instituto Oswaldo Cruz, 2015
The Rickettsia bacteria include the aetiological agents for the human spotted fever (SF) disease. In the present study, a SF groupRickettsia amblyommii related bacterium was detected in a field collected Amblyomma sculptum (Amblyomma cajennense species ...
Emília de Carvalho Nunes, Vinicius Figueiredo Vizzoni, Daniel Leal Navarro, Felipe Campos de Melo Iani, Liliane Silva Durães, Erik Daemon, Carlos Augusto Gomes Soares, Gilberto Salles Gazeta   +7 more
doaj   +5 more sources

Amblyomma sculptum ticks on a giant otter from the Brazilian Pantanal. [PDF]

Rev Bras Parasitol Vet, 2023
Abstract The giant otter (Pteronura brasiliensis) is a semiaquatic carnivore and a top predator in the trophic chain, considered a sentinel of freshwater ecosystems. Ticks are common ectoparasites of worldwide distribution and potential vectors of diseases.
Soresini G, Foerster N, Paiva F, Mourão G, Leuchtenberger C.   +4 more
europepmc   +4 more sources

Diferenciação morfométrica entre larvas de Amblyomma sculptum Berlese, 1888 e Amblyomma dubitatum Neumann, 1899 [PDF]

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2018
RESUMO Os carrapatos estão envolvidos em processos biológicos de uma grande variedade de organismos patogênicos. O gênero Amblyomma é o de maior importância médica, com a espécie Amblyomma sculptum Berlese, 1888 envolvida no ciclo de transmissão da febre
J. Brites-Neto, J. Brasil, G.A.C.G. Takeda, A.C. Guillen, M.B. Labruna, A. Pinter   +5 more
doaj   +3 more sources

Fluazuron orally administered to guinea pigs: pharmacokinetic and efficacy against Amblyomma sculptum. [PDF]

Parasit Vectors, 2022
AbstractBackgroundBrazilian spotted fever (BSF), the most lethal tick-borne disease in the Western Hemisphere, is caused by the bacteriumRickettsia rickettsiiand transmitted by the bite ofAmblyomma sculptum. Capybaras are considered primary hosts of this tick and amplifier hosts ofR. rickettsii, generating new infected lineages ofA.
Borges DA, Cid YP, Magalhães VS, Alves MCC, Ferreira TP, Bonfim IV, Lima EAS, de Freitas JP, Scott FB.   +8 more
europepmc   +4 more sources

Amblyomma sculptum Salivary Protease Inhibitors as Potential Anti-Tick Vaccines. [PDF]

Front Immunol, 2020
Amblyomma sculptumis the main tick associated with human bites in Brazil and the main vector ofRickettsia rickettsii, the causative agent of the most severe form of Brazilian spotted fever. Molecules produced in the salivary glands are directly related to feeding success and vector competence.
Costa GCA, Ribeiro ICT, Melo-Junior O, Gontijo NF, Sant'Anna MRV, Pereira MH, Pessoa GCD, Koerich LB, Oliveira F, Valenzuela JG, Giunchetti RC, Fujiwara RT, Bartholomeu DC, Araujo RN.   +13 more
europepmc   +5 more sources

Do Commercial Insect Repellents Provide Protection against the Tick <i>Amblyomma sculptum</i> (Acari: Ixodidae)? [PDF]

Pathogens, 2023
Amblyomma sculptum is a species of public health interest because it is associated with the transmission of the bacteria that causes Brazilian Spotted Fever (BSF). The use of repellents on humans is a prophylactic measure widely used to provide protection against a series of arthropod vectors, including mosquitoes and ticks.
de Barcelos BR, Coelho NGSS, Santos MMB, Vale FL, Teixeira ALC, Pereira E Souza LM, Zeringóta V, de Oliveira Monteiro CM, Eugenio CUO, Obara MT.   +9 more
europepmc   +4 more sources