A5040097975- Trypanosoma species research and implications
- Research on Leishmaniasis Studies
- Insect symbiosis and bacterial influences
- Parasites and Host Interactions
- Mosquito-borne diseases and control
- Insect-Plant Interactions and Control
- Vector-Borne Animal Diseases
- Insect Pest Control Strategies
- Liver Disease Diagnosis and Treatment
- Hepatitis B Virus Studies
- Bacterial Identification and Susceptibility Testing
- Evasion and Academic Success Factors
- Parasitic Diseases Research and Treatment
- Biochemical and Molecular Research
- Education Pedagogy and Practices
- Antimicrobial Resistance in Staphylococcus
- Toxoplasma gondii Research Studies
- Marine and Offshore Engineering Studies
- Mycobacterium research and diagnosis
- Education and Digital Technologies
- Invertebrate Immune Response Mechanisms
- Insect and Pesticide Research
- Insect Resistance and Genetics
- Parasite Biology and Host Interactions
- T-cell and Retrovirus Studies
Universidade Federal de Ouro Preto
2008-2017
Universidade Estadual do Rio Grande do Sul
2013
Fundação Oswaldo Cruz
1997-2006
The techniques used for diagnosis of canine visceral leishmaniasis (CVL) in Brazil ELISA and IFAT have been extensively questioned because the accuracy these tests. A recent change protocol excluded included Dual-Path Platform (DPP). We evaluated prevalence incidence rates Leishmania spp. before after protocol. In addition, based on our results, we propose a new alternative that is less expensive screening confirmation CVL. Plasma samples were obtained from serobank dogs cross-sectional...
Apresentam-se dados primários e secundários da doença de Chagas no Nordeste do Brasil, com prioridade para o vetor, a transmissão controle. Assinalam-se 27 espécies vetoras, importância basicamente Triatoma infestans, Panstrongylus megistus, brasiliensis pseudomaculata. As duas primeiras foram mais domiciliadas, causaram impacto médico-social têm sido eliminadas mediante continuado controle químico. últimas são nativas, ubiqüistas peridomésticas, difícil menor impacto, remanescendo como...
The role of reinfection in the evolution Chagas' disease was evaluated dogs alternately infected with 147 and SC-1 strains Trypanosoma cruzi. A parasitologic, serologic, clinical, electrocardiographic follow-up carried out on noninfected dogs. were reinfected five times over a period 38 months. No deaths observed during experiment. They presented brief oligosymptomatic acute phase. level parasitemia decreased progressively number reinfections. Bloodstream parasites not detectable after fifth...
The aim of this work is to present aspects related the ecology Rhodnius nasutus Stål, 1859 in palms from Chapada do Araripe Ceará, Brazil. following five species were investigated: babaçu (Attalea speciosa), buriti (Mauritia flexuosa), carnaúba (Copernicia prunifera), catolé (Syagrus oleracea) and macaúba-barriguda (Acrocomia intumescens). Fifth dissected (10 specimens for each species). overall infestation index was 86%, with a total 521 triatomines collected. Trypanosoma cruzi Chagas, 1909...
Following an infestation of dogticks in kennels housing dogs used for long-term studies the pathogenesis Chagas disease, we examined effect ivermectin treatment on dogs, ticks, trypanosome parasites, and also triatomine vectors disease. Ivermectin was highly effective eliminating but showed no apparent nor their infection. Triatominae fed soon after high mortality, this quickly declined bugs at successive intervals treatment. In conclusion, although may have a transient peridomestic...
Although metacyclic and blood trypomastigotes are completely functional in relation to parasite-host interaction and/or target cell invasion, they differ the molecules present on surface. Thus, aspects related variability that forms of T. cruzi interacts with host cells may lead fundamental implications immune response against this parasite and, consequently, clinical evolution Chagas disease. We have shown BT infected mice presented higher levels parasitemia during all acute phase...
Diagnosing canine visceral leishmaniasis (CVL) is a critical challenge since conventional immunoserological tests still present some deficiencies. The current study evaluated prototype flow cytometry serology test, using antigens and fluorescent antibodies that had been stored for 1 year at 4°C, on broad range of serum samples. Noninfected control dogs Leishmania infantum-infected were tested, the test showed excellent performance in differentiating these groups with high sensitivity,...
Trypanosoma cruzi is classified into six discrete taxonomic units (DTUs). For this classification, different biological markers and classification criteria have been used. The objective was to identify the genetic profile of T. samples isolated from patients two municipalities Jequitinhonha Valley, MG, Brazil. Molecular characterization performed using for typing characterize 63 chronic Chagas disease patients. characterizations followed distinct methodologies. Additionally, RAPD technique...
Due to the overlapping distribution of Trypanosoma rangeli and T. cruzi in Central South America, sharing several reservoirs triatomine vectors, we herein describe a simple method collect feces hemolymph filter paper for further detection specific characterization these two trypanosomes. Experimentally infected triatomines were collected or DNA by polymerase chain reaction was achieved. This collection allows sample field trypanosome laboratory.
Introduction Panstrongylus megistus is commonly found in wild environments of the State Rio Grande do Sul, Brazil. The aim this study was to characterize network refuges used by triatomine a forest fragment Porto Alegre and identify Trypanosoma cruzi infection, associated hosts epidemiological importance both triatomines. Methods Techniques including spool-and-line method active searching (transects) were natural foci. Results food source for each determined using precipitin test, infection...
We carried out a morphometric study of the esophagus cross-bred dogs experimentally infected or consecutively reinfected with Trypanosoma cruzi 147 and SC-1 strains, in order to verify denervation and/or neuronal hypertrophy intramural plexus. The animals were sacrificed chronic stage, 38 months after initial infection. Neither nests amastigotes, nor myositis ganglionitis, observed all third inferior portions esophageal rings analyzed. No nerve cell was identified submucous this organ. There...
The aim of this work was to identify and report the occurrence Trypanosoma rangeli cruzi in naturally infected Rhodnius nasutus (Hemiptera, Reduviidae, Triatominae) state Ceará, Brazil. Triatomines feces, salivary glands, hemolymph were collected for fresh examination, specific detection T. DNA by polymerase chain reaction carried out. characterization these two parasites showed simultaneous presence both (7.7%) 26 positive insects. Our results provide further knowledge on geographical distribution
Analisa-se a trajetória da doença de Chagas em Lassance (município descoberta Carlos Chagas) entre 1.908 2.001, através registros históricos e pesquisas atuais. O município foi importante foco tripanossomíase os anos 1.980, mercê infestação significativa das casas por Panstrongylus megistus e, mais tarde, Triatoma infestans, espécies que foram eficazmente controladas, nos últimos 20 anos. Importante no passado, infecção chagásica é hoje residual, com uma prevalência geral 5,03% afetando...
Eye colour of Triatoma infestans is controlled at a single autosomal locus, with black-eye as the dominant gene and red-eye recessive. Inheritance these characters follows classical Mendelian system, enabling eye to be used marker for studies mating frequency. We found no significant differences in oviposition rates egg hatching irrespective parental phenotypes. Different schedules between parents showed that did not affect competence. Females mated male or different males together...
Este artigo apresenta resultados de uma pesquisa cujo objetivo foi identificar os conhecimentos mobilizados por licencianda em Matemática e professora da Educação Básica, um contexto parceria para a elaboração implementação proposta ensino equação reta no médio. Trata-se natureza qualitativa, cujos dados foram produzidos meio áudio-gravação sete encontros parceria, dos quais cinco dedicados às discussões planejamento, dois à aplicação das atividades turma terceiro ano do Ensino Médio. A...