24 documents found, page 1 of 3
Victor Py-Daniel (1951-2021)
Medeiros, Jansen Fernandes de; Andrade, Herbet Tadeu de Almeida; Pessoa, Felipe Arley Costa
The importance of thick blood film method for sympatric filarial diagnosis in A...
Medeiros, Jansen Fernandes de; Pessoa, Felipe Arley Costa; Martins, MarilaineIn this work, the visual diagnostic methods for human filarias in the blood are evaluated. The thick blood film method is more faithful to identify the microfilariae species if compared to policarbonate membrane filtration and Knott methods, especially in areas where more than one species occur, as in Amazon basin. Slides with Mansonella ozzardi microfilariae were mounted and photographed by different diagnosis...
Mansonella ozzardi in the municipality of Tefé, Amazonas, Brazil, 60 years afte...
Medeiros, Jansen Fernandes de; Rodrigues, Moreno S.; Katsuragawa, Tony Hiroshi; Costa, Cristóvão Alves; Pessoa, Felipe Arley CostaThe prevalence of mansonelliasis was studied in the municipality of Tefé, state of Amazonas, Brazil. The prevalence (thick blood smear method) was 13.6% (147/1,078), higher in the Solimões River region (16.3%) than in the Tefé River region (6.3%). In the sampled communities in the Solimões River region, a higher density of cases was observed, as indicated by a kernel analysis (odds ratio 0.34; 95% confidence in...
Calliphoridae (Diptera) from human cadavers in Rio Grande do Norte State, north...
Andrade, Herbet T.A.; Varela-Freire, Adalberto A.; Batista, Maria J.Araújo; Medeiros, Jansen Fernandes deThis paper reports a study on Calliphoridae associated to human corpus in Rio Grande do Norte State, Brazil. Collections of Calliphoridae were made in cadavers in different stages of decomposition taken to the Instituto Técnico e Científico de Polícia/Natal, from different regions of the state. The following species were collected: Chrysomya megacephala (Fabr.), Chrysomya albiceps (Wied.), Cochliomyia macellari...
Prevalence of Mansonella ozzardi among riverine communities in the municipality...
Medeiros, Jansen Fernandes de; Py-Daniel, Victor; Barbosa, Ulysses CarvalhoIntroduction: Estimate the prevalence of Mansonella ozzardi infection and calculate the parasitic infection rate (PIR) in simuliid black flies in the municipality of Lábrea, State of Amazonas, Brazil. Methods: Prevalence was measured using the thick blood smear method collected from the fingers and was related to age, sex and occupation. Simuliidae were collected with a suction apparatus, then stained with hema...
Anticoagulant activity in salivary gland homogenates of Thyrsopelma guianense (...
Chagas, Andrezza C.; Medeiros, Jansen Fernandes de; Astolfi-Filho, Spártaco A.T.; Py-Daniel, VictorIn this study, anticoagulant activity was detected in salivary gland homogenates (SGHs) of Thyrsopelma guianense (Diptera: Simuliidae). The SGH yielded 1.07 μg ± 0.03 (n = 15) of total soluble protein per pair of glands. In addition, following SDS-PAGE (12.5% gel) and silver nitrate staining, 12 polypeptides with molecular weights ranging from 14-69 kDa were detected in all physiological ages analyzed (12 h, 24...
Haematophagic behavior in laboratory of Lutzomyia cruzi (Mangabeira) (Diptera: ...
Chagas, Andrezza Campos; Medeiros, Jansen Fernandes de; Justiniano, Sílvia Brandão; Pessoa, Felipe Arley CostaO flebotomíneo Lutzomyia cruzi é incriminado como um dos vetores de leishmaniose visceral no Brasil. Foram estudados: a idade ótima, a preferência alimentar, os índices de fecundidade e o volume de alimentação sanguínea realizado com fêmeas de L. cruzi colonizadas em laboratório. O tempo médio de alimentação foi maior em hamster, seguido de humano. Verificou-se que 49,1% das fêmeas alimentaram-se em humano com ...
Anthropic effects on sand fly (Diptera: Psychodidae) abundance and diversity in...
Ramos, Walkyria Rodrigues; Medeiros, Jansen Fernandes de; Julião, Genimar Rebouças; Ríos-Velásquez, Cláudia María; Marialva, Eric FabrícioSand flies (Diptera: Psychodidae) are responsible for the transmission of protozoan parasites that cause leishmaniases. They are found predominantly in forests, but some species exploit environments that have been subject to deforestation and subsequent human colonization. Studies conducted in Brazil over the past 30 years show that some species are adapting to peri-urban and urban settings. We evaluated sand f...
Epidemiological studies of Mansonella ozzardi (Nematoda, Onchocercidae) in indi...
Medeiros, Jansen Fernandes de; Py-Daniel, Victor; Barbosa, Ulysses Carvalho; Farias, Emanuelle de SousaEsse trabalho tem como objetivos estimar a prevalência de Mansonella ozzardi em comunidades indígenas do município de Pauini, Amazonas, Brasil e estimar a Taxa de Infecção Parasitária nos vetores. Foram examinados indígenas da etnia Apurinã, pelo método de gota espessa, em seis comunidades localizadas as margens e afluentes do rio Purus. A prevalência geral para M. ozzardi foi de 28,40%, com maior incidência pa...
Ecological aspects and molecular detection of Leishmania DNA Ross (Kinetoplasti...
Pereira Júnior, Antonio Marques; Teles, Carolina Bioni Garcia; Azevedo dos Santos, Ana Paula Silva de; Rodrigues, Moreno S.; Marialva, Eric FabrícioBackground: Phlebotomine sand flies (Diptera: Psychodidae) are insects of medical importance due to the role that some species play in the transmission of leishmaniasis. This work aimed to study some ecological aspects among sand flies fauna inhabiting two different environments: the várzea (lowland Amazonian forest) and terra firme (upland Amazonian forest), both located in Tefé Municipality, Amazonas State, B...