A5046163068- Research on Leishmaniasis Studies
- Trypanosoma species research and implications
- T-cell and Retrovirus Studies
- Reproductive tract infections research
- Cervical Cancer and HPV Research
- Venomous Animal Envenomation and Studies
- Insect and Pesticide Research
- Insect Pest Control Strategies
- Adolescent Sexual and Reproductive Health
- Vector-Borne Animal Diseases
- Science and Education Research
- Animal Disease Management and Epidemiology
- Women's cancer prevention and management
- Syphilis Diagnosis and Treatment
- Psychodrama and Leishmaniasis Studies
- Biotechnology and Related Fields
- Neurobiology and Insect Physiology Research
- Rabies epidemiology and control
- Leprosy Research and Treatment
- Parasites and Host Interactions
- Urinary Tract Infections Management
- History of Medicine and Tropical Health
- Maternal and Neonatal Healthcare
- Insect Resistance and Genetics
- Hepatitis B Virus Studies
Universidade Federal do Pará
2016-2025
Universidade Federal do Piauí
2014
Instituto Evandro Chagas
1996-2009
Fundação Saúde
1999-2003
Universidade Estadual de Maringá
1990
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...
Eight cases of cutaneous leishmaniasis are recorded among soldiers the Brazilian Forest Infantry stationed in Belém, State Pará, north Brazil. The infections, all acquired during manoeuvres nearby degraded primary forest, attributed to a new member subgenus Viannia, Leishmania (V.) lindenbergi n, sp. A further infection by this parasite was encountered woman, who lived very close same piece forest. has been characterised and differentiated from other known species Viannia following combined...
Sand flies were collected in the central region of state Rondônia (W 64 degrees 30' to 63 00' and S 10 00'to 11 00') using Shannon CDC light traps from October 1997 August 2000. A total 85,850 specimens representing 78 named species captured. Of these 14 new records for Rondônia. The proportion males/females was 1/1.131. Trypanosomatids, that are presently being identified, detected species. Leishmania (Viannia) naiffi recorded Psychodopygus davisi P. hirsutus. In present study dominant...
Leishmania (Viannia) shawi sp. n., is described from the monkeys Cebus apella and Chiropotes satanus, sloths Choloepus didactylus Bradypus tridactylus, procyonid Nasua nasua, phlebotomine sandfly Lutzomyia whitmani, all primary forest in State of Pará, north Brazil. L. (V.) variably distinguished other known species within subgenus Viannia by a combination biological, biochemical serological characters, as revealed studies on morphology, isoenzyme profiles, kDNA buoyant densities monoclonal...
To identify the aetiological agents of cutaneous leishmaniasis and to investigate genetic polymorphism Leishmania (Viannia) parasites circulating in an area with endemic (CL) Atlantic rainforest region northeastern Brazil.Leishmania spp. isolates came from three sources: (i) patients diagnosed clinically parasitologically CL based on primary lesions, secondary clinical recidiva, mucocutaneous scars; (ii) sentinel hamsters, sylvatic or synanthropic small rodents; (iii) sand fly species...
Background HTLV-1 is a retrovirus that causes lymphoproliferative disorders and inflammatory degenerative diseases of the central nervous system in humans. The prevalence this infection high parts Brazil there general lack public health care programs. As consequence, official data on transmission routes virus are scarce. Objective To demonstrate familial aggregation HTLV infections metropolitan region Belém, Pará, Brazil. Method A cross-sectional study involving 85 carriers treated at an...
Mosquitoes as Sabethes chloropterus, glaucodaemon, belisarioi are species of medical and epidemiological importance for arboviruses transmission such yellow fever St. Louis encephalitis. Despite this, no information about these three mitochondrial DNA has been found in literature. Our study presents a genome description, including identity, SNPs, mutation rate, phylogeny analysis using COX1, COX2, NADH4, NADH5, CYOB genes. The Sa. glaucodaemon belisaroi sizes 15.609 bp, 15.620 15.907...
De 1986 a 1997 foram encaminhados ao Laboratório de Ensino e Pesquisa em Análises Clínicas, da Universidade Estadual Maringá, 1418 pacientes suspeitos leishmaniose tegumentar para diagnóstico laboratorial. Os testes utilizados intradermorreação Montenegro, reação imunofluorescência indireta, pesquisa direta, isolamento identificação Leishmania. Destes pacientes, 955 (67,3%) apresentaram pelo menos um dos positivo, entre os quais 804 (84,2%) contraíram infecção no Estado do Paraná, 665...
The population structure of strains Leishmania (Viannia) braziliensis sensu lato from Pará State and Paraná in Brazil, L. (V.) shawi (Leishmania) amazonensis State, the relationships type subgenera were examined by random-amplified polymorphic deoxyribonucleic acid (RAPD) technique. Four different primers (M13-40, QG1, L15996 λgt11R) used. bands analysed using neighbor-joining (NJ) unweighted pair-group method with arithmetic averages (UPGMA) algorithms MEGA package. topology NJ UPGMA trees...
Journal Article Cutaneous leishmaniasis due to Leishmania (Leishmania) amazonensis in Amazonian Brazil, and the significance of a negative Montenegro skin-test human infections Get access F.T. Silveira, Silveira 1Institute Evandro Chagas (FNS), Caixa Postal 1128, 66.050, Belém, Pará, Brazil Search for other works by this author on: Oxford Academic PubMed Google Scholar R. Lainson, Lainson 2The Wellcome Parasitology Unit, 3, 66.001, J.J. Shaw, Shaw A.A. De Souza, Souza E.A. Ishikawa, Ishikawa...
We phenotypically characterized 43 leishmanial parasites from cutaneous leishmaniasis by isoenzyme electrophoresis and the indirect immunofluorescence antibody test (23 McAbs). Identifications revealed 11 (25.6%) strains of Leishmania (V.) braziliensis, 4 (9.3%) L. shawi shawi, 7 (16.3%) santarensis, 6 (13.9%) guyanensis lainsoni, 2 (4.7%) (L.) amazonensis, a putative hybrid parasite, guyanensis/L. shawi. McAbs detected three different serodemes braziliensis: I-7, II-1, III-3 strains. Among...
Purpose The aim of this study was to evaluate the overall and type-specific prevalence human papillomavirus (HPV) infection among females living in riverside communities state Pará, Eastern Brazilian Amazon. These are inhabited by low-income people, accessible only small boats. Cervical cytology risk factors for HPV were also assessed. Methods samples from 353 women selected collected both Papanicolau (Pap) test detection. Conventional polymerase chain reaction (PCR) real-time PCR used...
In Amazonian Brazil the etiological agents of American cutaneous leishmaniasis (ACL) belong to at least seven Leishmania species but little is known about putative phlebotomine sand fly vectors in different biomes. 2002–2003 a survey fauna was undertaken "Floresta Nacional do Tapajós", Belterra municipality, lower Amazon region, western Pará State, Brazil, where we recently confirmed presence hybrid parasite, L. (V.) guyanensis × shawi shawi. Sand flies were collected from Centers for...
Kala-azar or visceral leishmaniasis, found mostly throughout the Indian Subcontinent, East Africa, and Brazil, kills 20,000–40,000 persons annually. The agents, Leishmania donovani infantum , are obligatory intracellular protozoa of mononuclear phagocytes principally in spleen bone marrow. Protracted fever, anemia, wasting, hepatosplenomegaly, hemorrhages, bacterial co-infections typical features. One hundred twenty-two (122) in-hospital patients were studied to verify if higher marrow...
Scorpionism is a serious public health problem in Brazil. Although cases of envenomation by scorpions are frequent Brazil, Tityus silvestris – found throughout the Amazon region considered minor medical significance and with only few descriptions literature. This article aims to describe for first time epidemiological characteristics clinical manifestations scorpion stings T. that occurred eastern Brazilian Amazon. A prospective observational study was carried out on 13 confirmed registered...
From 1996 to 1999 multi-trapping methods (Center of Diseases Control, CDC) light traps, light-baited Shannon and aspiration on tree bases) were used study the phlebotomine fauna "Serra do Navio" region Brazilian State Amapá, which is part Guiana Shield. Fifty-three species identified among 8,685 captured individuals. The following species, associated with transmission American cutaneous leishmaniasis in Amazonian Brazil, captured: Nyssomyia umbratilis (3,388), Psychodopygus squamiventris...
Amazonian localized cutaneous leishmaniasis (LCL) is caused by parasites of the subgenera Leishmania and Viannia . Respectively, these may cause diffuse (DCL) mucocutaneous (MCL). This, together with differing skin test responses, suggests some species‐specificity in cell mediated immunity. In this study, T responses (proliferative interferon‐γ) to crude defined antigens were examined paired samples pre post chemotherapy. Untreated L. (L.) amazonensis LCL patients showed lower leishmanial...
This paper reports the finding of 4 specimens Psychodopygus complexus, captured in Paragominas region Pará State, Brazil, naturally infected with trypanosomatids that were positively identified as Leishmania (Viannia) braziliensis. Attention is drawn to importance this species a vector since it highly anthropophilic and has very extensive geographical distribution lower Amazon State south river, including island Marajó.