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Título: | Trypanosoma cruzi in Brazilian Amazonia: Lineages TCI and TCIIa in wild primates, Rhodnius spp. and in humans with Chagas disease associated with oral transmission |
Autor: | Marcili, Arlei Valente, Vera da Costa Valente, Sebastiäo Aldo S. Junqueira, Ângela Cristina Veríssimo Silva, Flávia Maia da Pinto, Ana Yecê das Neves Naiff, Roberto Daibes Campaner, Marta Coura, José Rodrigues Camargo, Erney Plessmann Miles, Michael Alexander Teixeira, Marta Maria Geraldes |
Palavras-chave: | Biogeography Chagas Disease Cytochrome Disease Transmission Dna Hominid Insect Pathology Phylogenetics Phylogeny Primate Protozoan Animal Aotidae Cebidae Chagas Disease Cytochromes B Dna, Protozoan Genotype Humans Insect Vectors Monkey Diseases Phylogeny Polymorphism, Genetic Primates Random Amplified Polymorphic Dna Technique Rhodnius Saguinus Species Specificity Trypanosoma Cruzi Amazonia South America Cytochrome B Protozoal Dna Animals Aotidae Cebidae Chagas Disease Classification Disease Carrier Polymorphism, Genetic Genetics Genotype Human Isolation And Purification Monkey Diseases Parasitology Phylogeny Primate Procedures Random Amplified Polymorphic Dna Rhodnius Saguinus Species Difference Transmission Trypanosoma Cruzi Veterinary Animal Aotidae Cebidae Chagas Disease Cytochromes B Dna, Protozoan Genotype Humans Insect Vectors Monkey Diseases Phylogeny Polymorphism, Genetic Primates Random Amplified Polymorphic Dna Technique Rhodnius Saguinus Species Specificity Trypanosoma Cruzi |
Data do documento: | 2009 |
Revista: | International Journal for Parasitology |
É parte de: | Volume 39, Número 5, Pags. 615-623 |
Abstract: | In this study, we provide phylogenetic and biogeographic evidence that the Trypanosoma cruzi lineages T. cruzi I (TCI) and T. cruzi IIa (TCIIa) circulate amongst non-human primates in Brazilian Amazonia, and are transmitted by Rhodnius species in overlapping arboreal transmission cycles, sporadically infecting humans. TCI presented higher prevalence rates, and no lineages other than TCI and TCIIa were found in this study in wild monkeys and Rhodnius from the Amazonian region. We characterised TCI and TCIIa from wild primates (16 TCI and five TCIIa), Rhodnius spp. (13 TCI and nine TCIIa), and humans with Chagas disease associated with oral transmission (14 TCI and five TCIIa) in Brazilian Amazonia. To our knowledge, TCIIa had not been associated with wild monkeys until now. Polymorphisms of ssrDNA, cytochrome b gene sequences and randomly amplified polymorphic DNA (RAPD) patterns clearly separated TCIIa from TCIIb-e and TCI lineages, and disclosed small intra-lineage polymorphisms amongst isolates from Amazonia. These data are important in understanding the complexity of the transmission cycles, genetic structure, and evolutionary history of T. cruzi populations circulating in Amazonia, and they contribute to both the unravelling of human infection routes and the pathological peculiarities of Chagas disease in this region. © 2008 Australian Society for Parasitology Inc. |
DOI: | 10.1016/j.ijpara.2008.09.015 |
Aparece nas coleções: | Artigos |
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