A5003248266- Research on Leishmaniasis Studies
- Trypanosoma species research and implications
- Insect and Pesticide Research
- Parasites and Host Interactions
- Vector-borne infectious diseases
- Parasitic Infections and Diagnostics
- Coccidia and coccidiosis research
- Insect Pest Control Strategies
- Mosquito-borne diseases and control
- Zoonotic diseases and public health
- Parasite Biology and Host Interactions
- Bird parasitology and diseases
- Vector-Borne Animal Diseases
- History of Medicine and Tropical Health
- Viral Infections and Vectors
- Helminth infection and control
- RNA and protein synthesis mechanisms
- Tuberculosis Research and Epidemiology
- Insect Resistance and Genetics
- Plant and animal studies
- Animal Disease Management and Epidemiology
- Mycobacterium research and diagnosis
- Leptospirosis research and findings
- RNA modifications and cancer
- Syphilis Diagnosis and Treatment
Universidade de São Paulo
2014-2024
Universidade Brasil
2006-2023
Universidade Cidade de São Paulo
2004-2022
University of Calgary
2020-2021
Toronto General Hospital
2020-2021
University of Toronto
2020-2021
Boston Children's Hospital
2020-2021
Bombardier (Canada)
2020-2021
Public Health Ontario
2021
Laboratoire de Mathématiques d'Orsay
2021
The elimination of seropositive dogs in Brazil has been used to control zoonotic visceral leishmaniasis but with little success. To elucidate the reasons for this, infectiousness 50 sentinel exposed natural Leishmania chagasi infection was assessed through time by xenodiagnosis sandfly vector, Lutzomyia longipalpis Eighteen (43%) 42 infected became infectious after a median 333 days field (105 seroconversion). Seven highly (17%) accounted >80% infections. There were positive correlations...
SUMMARY We propose a taxonomic revision of the dixenous trypanosomatids currently classified as Endotrypanum and Leishmania , including parasites that do not fall within subgenera L. ( ) Viannia) related to human leishmaniasis or Sauroleishmania formed by leishmanias lizards: colombiensis, equatorensis, herreri, hertigi, deanei, enriettii martiniquensis. The comparison these species with newly characterized isolates from sloths, porcupines phlebotomines central South America unveiled new...
Evidence of Leishmania infection was found in small mammals captured between 1996 and 2000 the Amaraji region, Pernambuco State, Brazil. The kDNA polymerase chain reaction (PCR), using primers specific for subgenus L. (Viannia), positive 43/153 water rats (Nectomys squamipes), 13/81 black (Rattus rattus), 15/103 grass mice (Bolomys lasiurus), 1/14 marsh (Holochilus scieurus), 2/50 field (Akodon arviculoides), 2/12 woolly opossums (Marmosa sp.), 5/37 common (Didelphis albiventris). This same...
Journal Article Leishmaniasis in Brazil: I. Observations on enzootic rodent leishmaniasis—incrimination of Lutzomyia flaviscutellata (mangabeira) as the vector lower amazonian basin Get access R. Lainson, Lainson The Wellcome Parasitology Unit, Instituto Evandro Chagas, F.S.E.S.P., Belém, Pará, Brazil Search for other works by this author on: Oxford Academic PubMed Google Scholar J.J. Shaw Transactions Royal Society Tropical Medicine and Hygiene, Volume 62, Issue 3, 1968, Pages 385–395,...
Quatro casos de doença Chagas são registrados numa família em Belém, Pará, Brasil. Acredita-se que a infecção foi adquirida Belém. Como não foram encontrados triatomíneos na casa dos doentes, nem nas residências vizinhas, sugere-se outros meios transmissão devem ser considerados, por exemplo "per os".
Phlebotomine sand flies are the subject of much research because role their females as only proven natural vectors Leishmania species, parasitic protozoans that causative agents neglected tropical disease leishmaniasis. Activity in this field was highlighted by eighth International Symposium on Sand (ISOPS) held September 2014, which prompted review focusing vector control. Topics reviewed include: Taxonomy and phylogenetics, Vector competence, Genetics, genomics transcriptomics,...
Six species of Leishmania are at present known to cause cutaneous and/or mucocutaneous leishmaniasis in Brazil, and they all be found the Amazon region this country. The eco-epidemiology each is discussed, with observation that Amazonian leishmaniases zoonoses, their source silvatic mammals phlebotomine sandfly vectors. With man's destruction natural forest southern some have survived by adapting a peridomestic or domiciliary habitat rural areas. Some domestic animals, such as dogs equines...
In Brazil, programs based on elimination of infected dogs have not curtailed the spread visceral leishmaniasis (VL), suggesting that other reservoirs infection exist. Persons with active VL can infect sand fly vector, but in endemic areas, persons asymptomatic infections, whose infectivity to flies is unknown, are far more numerous. this study, a polymerase chain reaction-based assay detected kinetoplast DNA Leishmania chagasi blood eight 108 living patients recently diagnosed VL. These had...
The sensitivity and specificity of PCR, serology (ELISA) lymphoproliferative response to Leishmania antigen for the detection infantum infection were evaluated in a cohort 126 dogs exposed natural Brazil. For DNA from bone-marrow was amplified with both minicircle ribosomal primers. status time each dog estimated longitudinal data. PCR parasite-positive samples 98%. However, overall post-infection samples, confirmed infection, only 68%. varied during course being highest (78–88%) 0–135 days...
Phylogenetic relationships among Trypanosoma rangeli isolates from man, wild mammals and triatomine bugs widespread geographical origin were inferred by comparison of the small subunit ribosomal gene sequences. The phylogenetic trees indicated that subgenus Herpetosoma is polyphyletic strongly supported division this group into two monophyletic lineages, one made up T. , -like allied species other consisting lewisi related taxa. Based on analysis, morphology, behaviour in vertebrate...
The application of different taxonomic methods (Cladistic, Evolutionary Taxonomy and Numerical Taxonomy) to the taxonomy Genus Leishmania are reviewed. major groupings most recent classifications obtained using cladistical approach agree with divisions previous which used traditional (Evolutionary Taxonomy). advantage is that it produces cladograms whose branches indicate more accurately levels relationships between taxa. useful for identification but not as good classification. ancient...