75 resultados para Evans, Silas J.

em Scielo Saúde Pública - SP


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ABSTRACT Moncini is the tribe of Hesperiidae that comprises the greatest diversity of small, brown, hard to identify skippers. The group is peculiarly classified as having many monotypic genera, thus offering low informative value to its systematics. This study presents a review of the genus Gallio Evans, 1955, a genus formerly recognized as monotypic, and describes three new species, Gallio imperatriz sp. nov. from Maranhão, Brazil, Gallio furtadoi sp. nov. from Mato Grosso, Brazil and Gallio eti sp. nov. from Madre de Díos, Peru and Acre, Brazil (type locality). A lectotype for Vehilius carasta Schaus, 1902 is designated. Gallio is therefore redescribed and illustrations and diagnosis to its species are provided.

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Resumo Este artigo analisa conflitos envolvendo lideranças laicas e religiosas na esfera pública brasileira entre os anos de 2010 e 2013. O pastor Silas Malafaia protagoniza os confrontos aqui recapitulados, primeiro contra a deputada Iara Bernardi, na ocasião de um debate sobre o PLC 122/2006, passando por sua tão repercutida entrevista no programa de Marília Gabriela e culminando no embate travado contra o deputado Jean Wyllys por ocasião do PDC que ficou conhecido como da “cura gay”. Partindo de um diálogo entre a teoria social contemporânea e a filosofia política, avaliamos os dilemas apresentados a partir dos pontos de vista últimos em disputa, iluminando os sentidos que definem as respectivas concepções do que seja a vida numa sociedade laica e democrática.

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Em março de 2000, foi assinado no Sudão meridional um tratado de paz entre os Dinka e os Nuer. As formas da guerra civil que se estendia por décadas, bem como as soluções acordadas, descritas pela imprensa e nos próprios documentos, adquirem pleno sentido quando se consideram as penetrantes análises de Evans-Pritchard acerca dos Nuer. Persistentes ao longo das décadas, as estruturas nuer reveladas em suas obras passam pelo "teste da história", permitindo inclusive retomar suas contribuições à reflexão acerca da relação entre estrutura e história

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Foram dosados anticorpos inibidores da hemaglutinação para o vírus da rubéola, do sarampo e da caxumba, em amostras de soro de 166 crianças de elevado nível sócio-econômico, com idade de 6 a 12 anos, que freqüentavam, em 1969, uma escola primária na cidade de São Paulo, Brasil. A per-centagem de soros positivos foi de 49,3% para a rubéola, 88,2% para o sarampo e 79,4% para a caxumba. Através de interrogatório junto aos pais, observou-se significativa correspondência entre antecedentes clínicos positivos para sarampo e caxumba e presença de anticorpos circulantes (95,3% e 91,7%, respectivamente). Houve grande discordância quando os antecedentes clínicos ou vacinais para sarampo e caxumba eram negativos: 51,8% e 61,4% destas crianças possuíam anticorpos circulantes. Quanto à rubéola, não foi possível fazer-se tal correlação, pois a maioria das mães não sabia dar informações sobre esta doença, no passado.

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El cultivo "in vitro" de Leishmania braziliensis braziliensis constituye un método útil en el trabajo de campo, para el aislamiento primario de ésta subes-pécie de Leishmania. Cultivos en dos medios difásicos de agar sangre (DAB y EVANS) y dos medios líquidos (SCHNEIDER'S y AR-103) realizados en pacientes con lesiones cutáneas de Leishmaniasis Tegumentaria Americana (LTA) demostraron: 1) Similar sensibilidad de los medios DAB y Schneider's cuando utilizamos el procedimiento de aspiración de las muestras con aguja. 2) Rendimiento sensible y reproducible, con el medio DAB, cuando comparado, en repetidas ocasiones, con el medio EVANS. 3) Incremento significativo en el aislamiento primario de Leishmania braziliensis brazilensis mediante la ejecución, en la misma lesión de cada paciente, de tres aspiraciones consecutivas en sitios diferentes de la úlcera activa (50% de positividad, con el medio DAB).

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Three isolates over 5 years from a patient with persistent relapsing mucosal leishmaniasis due to Leishmania (Viannia) braziliensis and 7 clones from one of these isolates were studied by zymodemes and scrodemes analysis. Results showed evidences of clonal phenotypic variation. Eight isoenzymes markers demonstrated clear differences on Cellulose Acetate (CA) and thin starch gel electrophoresis. Also a panel of specific monoclonal antibodies showed such differences. Our observations provide additional evidence that Leishmania (Viannia) braziliensis is composed by subpopulations of parasites with peculiar biochemical and antigenic characteristics.

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No Estado do Amazonas, nas regiões circunvizinhas à cidade de Manaus, as principais espécies de serpentes causadoras de acidentes são Bothrops atrox e Lachesis muta muta com um percentual de ocorrência, dos acidentes confirmados, de 76% e 17%, respectivamente. Rotineiramente, na ausência dos soros antilaquético e antibotrópico-laquético o Instituto de Medicina Tropical de Manaus (IMTM), utiliza-se do soro antibotrópico no tratamento do acidente laquético. Neste trabalho relatamos um caso de acidente por L m. muta, onde o paciente foi tratado com 20 ampolas do soro antibotrópico e permaneceu com o sangue incoagulável até o 13º dia após o acidente. Experimentos foram realizados para obtenção das potências do soro antibotrópico para as atividades coagulante e hemorrágica dos venenos de L. m. muta e de B. atrox. Os resultados mostram que as potências do soro para a atividade hemorrágica dos venenos de L. m. muta e de B. atrox foram similares enquanto que a potência, para a atividade coagulante do veneno de L. m. muta, foi 9,2 vezes menor. Os títulos de anticorpos de três diferentes lotes de soro antibotrópico variaram para o veneno de L. m. muta e foram constantes para o veneno de B. atrox. Devido a ineficácia do soro antibotrópico em neutralizar, principalmente, a atividade coagulante do veneno de L. m. muta, sugerimos a não utilização do antibotrópico no tratamento dos acidentes por L. m. muta.

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Diagnostic and parasite characterization and identification studies were carried out in human patients with cutaneous leishmaniasis lesions in Santiago del Estero, Northern Province of Argentina. Diagnostic procedures were biopsies of lesions for smears and inoculations in hamster, needle aspirations of material from ulcers for "in vitro" cultures. Immunodiagnostic techniques applied were IFAT-IgG and Montenegro skin test. Primary isolation of eight stocks of leishmanial parasites was achieved from patients with active lesions. All stocks were biologically characterized by their behaviour in hamster, measurements of amastigote and promastigotes and growth "in vitro". Eight stocks were characterized and identified at species level by their reactivity to a cross-panel of sub-genus and specie-specific Monoclonal Antibodies through an Indirect Immunofluorescence technique and a Dot-ELISA. We conclude from the serodeme analysis of Argentina stocks that: stocks MHOM/AR/92/SE-1; SE-2; SE-4; SE-8; SE-8-I; SE-30; SE-34 and SE-36 are Leishmania (Viannia) braziliensis. Three Leishmania stocks (SE-1; SE-2 and SE-30) did not react with one highly specie-specific Monoclonal Antibody (Clone: B-18, Leishmania (Viannia) braziliensis marker) disclosing two serodeme group patterns. Five out of eight soluble extracts of leishmanial promastigotes were electrophoresed on thin-layer starch gels and examined for the enzyme MPI, Mannose Phosphate Isomerase; MDH, Malate Dehydrogenase; 6PGD, 6 Phosphogluconate Dehydrogenase; NH, Nucleoside Hydrolase, 2-deoxyinosinc as substrate; SOD, Superoxide Dismutase; GPI, Glucose Phosphate Isomerase and ES, Esterase. From the isoenzyme studies we concluded that stocks: MHOM/AR/92/SE-1; SE-2; SE-4; SE-8 and SE-8-I are isoenzymatically Leishmania (Viannia) braziliensis. We need to analyze more enzymes before assigning them to a braziliensis zymodeme.

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Whipple's disease (WD) is a rare systemic disease of infectious etiology which involves the small intestine but can virtually affect any organ. We present here five cases (four males and one female) ranging in age from 20 to 59 years. All patients had intestinal involvement associated or not with clinical manifestations linked to this organ. Vegetation in the tricuspid valve was observed in one patient, suggesting endocarditis caused by Tropheryma whippelii, with disappearance of the echocardiographic alterations after treatment. In one of the male patients the initial clinical manifestation was serologically negative spondylitis, with no diarrhea occurring at any time during follow-up. Ocular involvement associated with intestinal malabsorption and significant weight loss were observed in one case. In the other two cases, diarrhea was the major clinical manifestation. All patients were diagnosed by histological examination of the jejunal mucosa and, when indicated, of extraintestinal tissues by light and electron microscopy. After antibiotic treatment, full remission of symptoms occurred in all cases. A control examination of the intestinal mucosa performed after twelve months of treatment with sulfamethoxazole-trimethoprim revealed the disappearance of T. whippelii in four patients. The remaining patient was lost to follow-up.

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Formalin-killed promastigotes (FKP) of Leishmania major, in combination with Montanide ISA 720 (MISA), BCG or alum were used in vaccination of an inbred murine model against cutaneous leishmaniasis (CL). Significant and specific increases in anti-FKP IgG responses were detected for both alum-FKP and BCG-FKP compared to MISA-FKP (p < 0.001). Significant increases in splenic lymphocyte recall proliferation was obtained in the MISA-FKP vaccinated mice compared to alum-FKP or BCG-FKP vaccinated groups (p < 0.01). The highest interferon-γ responses were observed in the BCG-FKP group followed by the MISA-FKP while the alum-FKP gave the least responses. Significantly reduced lesion sizes were obtained in the MISA-FKP group compared to the BCG/alum adjuvants-FKP vaccinated groups. Although the BCG-FKP group showed the highest IFN-γ responses, it failed to control cutaneous lesions. Significant reductions in parasite numbers were observed in the MISA-FKP and BCG-FKP vaccinated groups (p < 0.001). There was a good correlation between parasite burden and IFN-γ level indicating IFN-γ response as a sensitive parameter of the immune status. In conclusion, MISA-FKP is the most efficacious vaccine formulation against murine cutaneous leishmaniasis.