Results 61 to 70 of about 2,491 (230)

Surveillance of Chagas disease vectors in Ceará State, Northeastern Brazil [PDF]

, 2021
Objective: Describe the spatial distribution, temporal trend and the natural infection rates by Trypanosoma cruzi in triatomines captured in Ceará State, between 2003 and 2014. Methods: Chagas Disease Control Program data were used to describe triatomine
Alencar, Carlos Henrique, Bezerra, Cláudia Mendonça, de Alencar, Maria Janiele, Martins, Victor Emanuel Pessoa, Ramos da Silva, Abel Brasil   +4 more
core   +2 more sources

Immunomodulation by Trypanosoma cruzi: Toward Understanding the Association of Dendritic Cells with Infecting TcI and TcII Populations

Journal of Immunology Research, Volume 2014, Issue 1, 2014., 2014
Dendritic cells (DCs) are major immune components, and depending on how these cells are modulated, the protective host immune response changes drastically. Trypanosoma cruzi is a parasite with high genetic variability and modulates DCs by interfering with their capacity for antigen recognition, migration, and maturation.
Thiago Alvares da Costa, Marcos Vinicius Silva, Maria Tays Mendes, Tamires Marielem Carvalho-Costa, Lara Rocha Batista, Eliane Lages-Silva, Virmondes Rodrigues, Carlo Jose Oliveira, Luis Eduardo Ramirez, Xiao-Feng Yang   +9 more
wiley   +1 more source

Louse (Insecta : Phthiraptera) mitochondrial 12S rRNA secondary structure is highly variable [PDF]

, 2002
Lice are ectoparasitic insects hosted by birds and mammals. Mitochondrial 12S rRNA sequences obtained from lice show considerable length variation and are very difficult to align.
Billoud B., Collins L.J., Corpet F., Critchlow D.E., Day W.H.E., Fontana W., Gutell R.R., Hafner M.S., Hafner M.S., Hickson R.E., Hickson R.E., Hofacker I.L., Houde P., Johnson K.P., Johnson K.P., K. P. Johnson, Konings D.A.M., Lenhof H.-P., Lockhart P.J., Mindell D.P., Moran N.A., Page R.D.M., Page R.D.M., Page R.D.M., R. Cruickshank, R. D. M. Page, Shao R., Simon C., Springer M.S., Stoye J., Swofford D.L., Wheeler W.C.   +31 more
core   +2 more sources

Mitochondrial PCR‐RFLP Assay to Distinguish Triatoma brasiliensis macromelasoma from Triatoma brasiliensis brasiliensis Subspecies (Hemiptera: Reduviidae)

Journal of Tropical Medicine, Volume 2013, Issue 1, 2013., 2013
Triatoma brasiliensis sensu lato (s.l.), the main vector of Chagas disease in northeastern Brazil, is a species complex comprising four species, one with two subspecies (T. brasiliensis brasiliensis, T. brasiliensis macromelasoma, T. juazeirensis, T. sherlocki, and T. melanica), and each taxon displaying distinct ecological requirements.
Daniel Pagotto Vendrami, Walter Ceretti-Junior, Marcos Takashi Obara, Mauro Toledo Marrelli, Aditya Prasad Dash   +4 more
wiley   +1 more source

Doença de Chagas no Brasil Chagas disease in Brazil

Cadernos de Saúde Pública, 2000
Sumariam-se os dados da Fundação Nacional de Saúde (FNS) sobre o estado atual dos vetores da doença de Chagas no Brasil, verificando-se que após vinte anos de controle químico continuado houve franca redução dos índices triatomínico-tripanosômicos ...
Márcio C. Vinhaes, João Carlos Pinto Dias   +1 more
doaj   +1 more source

Biologic and Genetics Aspects of Chagas Disease at Endemic Areas

Journal of Tropical Medicine, Volume 2012, Issue 1, 2012., 2012
The etiologic agent of Chagas Disease is the Trypanosoma cruzi, transmitted through blood‐sucking insect vectors of the Triatominae subfamily, representing one of the most serious public health concerns in Latin America. There are geographic variations in the prevalence of clinical forms and morbidity of Chagas disease, likely due to genetic variation ...
Marilanda Ferreira Bellini, Rosana Silistino-Souza, Marileila Varella-Garcia, Maria Tercília Vilela de Azeredo-Oliveira, Ana Elizabete Silva, Luis E. Cuevas   +5 more
wiley   +1 more source

Feeding and defecation behavior of Triatoma rubida (Uhler, 1894) (Hemiptera: Reduviidae) under laboratory conditions, and its potential role as a vector of chagas disease in Arizona, USA [PDF]

, 2011
Chagas disease is caused by the parasite Trypanosoma cruzi, which is transmitted to humans by blood-sucking triatomine insects. This disease is endemic throughout Mexico and Central and South America, but only a few autochthonous cases have been reported
Gregory, Teresa, Guerenstein, Pablo Gustavo, Hildebrand, John, Reisenman, Carolina Esther   +3 more
core   +1 more source

An Insight into the Sialomes of Bloodsucking Heteroptera

Psyche: A Journal of Entomology, Volume 2012, Issue 1, 2012., 2012
Saliva of bloodsucking arthropods contains dozens or hundreds of proteins that affect their hosts′ mechanisms against blood loss (hemostasis) and inflammation. Because acquisition of the hematophagous habit evolved independently in several arthropod orders and at least twice within the true bugs, there is a convergent evolutionary scenario that creates
José M. C. Ribeiro, Teresa C. Assumpção, Ivo M. B. Francischetti, Mark M. Feldlaufer   +3 more
wiley   +1 more source

Distribuição geográfica e indicadores entomológicos de triatomíneos sinantrópicos capturados no Estado de Goiás Geographical distribution and indicators entomologic of sinantropic triatomines captured in the State of Goiás

Revista da Sociedade Brasileira de Medicina Tropical, 2007
Apresenta-se a distribuição geográfica de triatomíneos em Goiás e indicadores entomológicos no ambiente domiciliar: infestação domiciliar, densidade triatomínica domiciliar e infecção vetorial pelo Trypanosoma cruzi.
Antônio Wilson Soares de Oliveira, Ionizete Garcia da Silva   +1 more
doaj   +1 more source

Geographic Distribution of Chagas Disease Vectors in Brazil Based on Ecological Niche Modeling

Journal of Tropical Medicine, Volume 2012, Issue 1, 2012., 2012
Although Brazil was declared free from Chagas disease transmission by the domestic vector Triatoma infestans, human acute cases are still being registered based on transmission by native triatomine species. For a better understanding of transmission risk, the geographic distribution of Brazilian triatomines was analyzed.
Rodrigo Gurgel-Gonçalves, Cléber Galvão, Jane Costa, A. Townsend Peterson, Maria Goreti Rosa-Freitas   +4 more
wiley   +1 more source