A5066481024- Parasite Biology and Host Interactions
- Trypanosoma species research and implications
- Helminth infection and control
- Vector-borne infectious diseases
- Fish biology, ecology, and behavior
- Fish Biology and Ecology Studies
- Bird parasitology and diseases
- Insect symbiosis and bacterial influences
- Research on Leishmaniasis Studies
- Parasites and Host Interactions
- Mosquito-borne diseases and control
- Ruminant Nutrition and Digestive Physiology
- Amphibian and Reptile Biology
- Effects of Environmental Stressors on Livestock
- Vector-Borne Animal Diseases
- Parasitic Infections and Diagnostics
- Toxoplasma gondii Research Studies
- Leech Biology and Applications
- Parasitic infections in humans and animals
- T-cell and Retrovirus Studies
- Nematode management and characterization studies
- Insects and Parasite Interactions
- Public Health in Brazil
- Parasitic Diseases Research and Treatment
- Women's cancer prevention and management
Universidade Federal de Mato Grosso do Sul
2015-2024
Instituto Nacional do Câncer
2022
Hospital do Câncer III
2022
Universidade Estadual de Londrina
2009-2016
Universidade Federal Rural do Rio de Janeiro
2015
Beni-Suef University
2013
Fundação Oswaldo Cruz
2010
West Park Hospital
2009
Hannah Research Foundation
2009
Ecorys (Netherlands)
2001
SUMMARY We characterized 15 Trypanosoma cruzi isolates from bats captured in the Amazon, Central and Southeast Brazilian regions. Phylogenetic relationships among T. lineages using SSU rDNA, cytochrome b, Histone H2B genes positioned all Amazonian into I (TCI). However, bat other regions, which had been genotyped as II (TC II) by traditional genotyping method based on mini-exon gene employed this study, were not nested within any of previously defined TCII sublineages, constituting a new...
SSU ribosomal sequences of trypanosomes from Brazilian cattle and water buffalo were used to infer phylogenetic relationships between non-pathogenic T. theileri allied species parasitic in artiodactyls. distinct geographical regions Brazil other countries tightly clustered into the 'clade theileri' distant 'T. brucei clade' pathogenic parasites artiodactyls, also mammals. The existence this monophyletic assemblage (T. clade) composed only by isolates artiodactyl justifies continued...
The taxonomic and phylogenetic relationships of Trypanosoma vivax are controversial. It is generally suggested that South American, East West African isolates could be classified as subspecies or species allied to T. vivax. This the first study compare American (Brazil Venezuela) with West/East isolates. Phylogeny using ribosomal sequences positioned all tightly together on periphery clade containing Salivarian trypanosomes. same branching within was observed in inferred phylogenies...
Entre os métodos de controle da verminose gastrintestinal em ovinos, a utilização produtos químicos é o mais empregado. Porém, uso indiscriminado e continuado desses tem selecionado populações helmintos resistentes aos anti-helmínticos, fenômeno relatado no mundo todo. Este trabalho teve como objetivo identificar as espécies parasitos gastrintestinais diagnosticar situação resistência anti-helmíntica ovinos Estado Mato Grosso do Sul. Foram realizados testes redução na contagem ovos por grama...
A infecção por HIV é um problema de saúde pública, considerado como uma pandemia. Nesse sentido, nota-se a necessidade terapia antirretroviral efetiva, visando bem-estar das pessoas que vivem com essa e redução da taxa transmissão desse vírus. Assim, esse trabalho dedica-se identificar as principais fontes informações usadas vivendo AIDS em Boa Vista, Roraima relacionar o esquema tratamento usado padrão adesão ao tratamento. Para isso, foi realizada pesquisa abordagem quantitativa do tipo...
Introdução: A malária é uma doença transmitida pelo mosquito do gênero Anopheles, causada pelos protozoários Plasmodium que está presente em diversas regiões planeta, principalmente nas áreas tropicais e subtropicais. Afeta, anualmente, milhões de pessoas, podendo ser fatal ao indivíduo. Entre as principais complicações decorrentes dessa enfermidade, destaca-se a cerebral. Objetivo: Analisar relação entre o número infecções anteriores por frequência sintomas neurológicos. Metodologia:...
Little is known about the diversity, phylogenetic relationships, and biogeography of trypanosomes infecting non-mammalian hosts. In this study, we investigated influence host species on shaping genetic relationship, distribution from South American alligatorids African crocodilids.Small Subunit rRNA (SSU rRNA) glycosomal Glyceraldehyde Phosphate Dehydrogenase (gGAPDH) genes were employed for inferences. Trypanosomes crocodilians obtained by haemoculturing. Growth behaviour, morphology,...
Trypanosoma terena and ralphi are known species of the South American crocodilians Caiman crocodilus, yacare Melanosuchus niger phylogenetically related to tsetse-transmitted grayi African Crocodylus niloticus. These trypanosomes form Crocodilian clade terrestrial genus Trypanosoma. A PCR-survey for in caiman blood samples leeches taken from caimans revealed unknown trypanosome diversity frequent mixed infections. Phylogenies based on SSU (small subunit) rRNA gGAPDH (glycosomal...
SUMMARY In this study, we addressed the phylogenetic and taxonomic relationships of Trypanosoma vivax related trypanosomes nested in subgenus Duttonella through combined morphological phylogeographical analyses. We previously demonstrated that clade T. harbours a homogeneous comprising West African/South American isolates heterogeneous East African isolates. Herein characterized trypanosome isolated from nyala antelope ( Tragelaphus angasi ) wild-caught Mozambique (East Africa) diagnosed as...
Mechanical transmission of the major livestock pathogen Trypanosoma vivax by other biting flies than tsetse allows its spread from Africa to New World. Genetic studies are restricted a small number isolates and based on molecular markers that evolve too slowly resolve relationships between American West African populations and, thus, unable us uncover recent history T. in genetic diversity, population structure source outbreaks was investigated through microsatellite multiloci (7 loci)...
We examined the anurans Dendropsophus nanus, Hypsiboas raniceps, Phyllomedusa azurea, Pseudis limellum, paradoxa, Scinax nasicus, Trachycephalus typhonius, Leptodactylus chaquensis, fuscus, podicipinus, and Physalaemus albonotatus from southeastern Pantanal, Brazil, for helminth parasites. These 11 anuran species were associated with 35 taxa: 1 undetermined acanthocephalan, 28 nematodes, 6 digenetic trematodes. Helminth richness varied 2 in hylids D. nanus P. limellum to 18 L. chaquensis....
Recently, Proceratophrys cristiceps was redescribed along with the description of two species from Caatinga biome: P. aridus and caramaschii. However, only a small fraction populations related to such in Northeastern Brazil examined, most central were not contemplated this analysis. Comparisons also based exclusively on external morphology, precluding more accurate delimitation taxa light multiple characters. Such geographic paucity reliance one data source caused status be uncertain. Thus,...
SUMMARY Trypanosoma ( Megatrypanum ) theileri from cattle and trypanosomes of other artiodactyls form a clade closely related species in analyses using ribosomal sequences. Analysis polymorphic sequences larger number broader geographical origins is required to evaluate the clustering isolates as suggested by previous studies. Here, we determined spliced leader (SL) genes 21 2 water buffalo distant regions Brazil. SL gene repeats revealed that 5S rRNA inserted within intergenic region....
The objective of this study was to evaluate the influence feeding energy levels during last third gestation and lactation on performance ewes lambs up weaning. experiment carried out in sheep raising sector Universidade Estadual de Londrina (UEL), from August December 2007. Thirty-two adult with 105 days gestation, average live weight 57.55 kg body condition scores 3.42 were used beginning experiment. animals confined collective pens, distributed randomly three treatments: 2.4; 2.2 2.0 Mcal...
The genus Trypanosoma Gruby, 1843 is constituted by terrestrial and aquatic phylogenetic lineages both harboring understudied trypanosomes from reptiles including an increasing diversity of crocodilian trypanosomes. clandestinus Teixeira & Camargo, 2016 the lineage transmitted leeches to caimans. grayi Novy, 1906 tsetse flies crocodiles in Africa, but vectors Neotropical caiman nested this remain unknown. Our analyses uncovered tabanids South America other than T. flies. All found clustered...
SUMMARY In this study, using a combined data set of SSU rDNA and gGAPDH gene sequences, we provide phylogenetic evidence that supports clustering crocodilian trypanosomes from the Brazilian Caiman yacare (Alligatoridae) Trypanosoma grayi , species circulates between African crocodiles (Crocodilydae) tsetse flies. survey in Pantanal, prevalence trypanosome infection was 35% as determined by microhaematocrit haemoculture, 9 cultures were obtained. The morphology trypomastigotes caiman blood...
The prevalence and parasitemia of Hepatozoon caimani in the natural population caiman, Caiman yacare, from Pantanal area, state Mato Grosso do Sul, central Brazil, were evaluated according to gender month capture July 2006 February 2008. Blood samples obtained bimonthly a total 229 caimans, 76% positive. Prevalence varied significantly sampling animal size. Almost all adults (100%) young-adults (97%) positive, while 63% juvenile caimans positive youngest individuals negative. These results...