Sexing sand fly pupae (Diptera: psychodidade: phlebotominae).

abstract：:A polysaccharide-rich fraction (ATF) of medicinal mushroom Agaricus brasiliensis was evaluated on the candidacidal activity, H2O2 and nitric oxide (NO) production, and expression of mannose receptors by murine peritoneal macrophages. Mice received three intraperitoneal (i.p.) injections of ATF and after 48 h their per...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Martins PR,Gameiro MC,Castoldi L,Romagnoli GG,Lopes FC,Pinto AV,Loyola W,Kaneno R

更新日期：2008-05-01 00:00:00

abstract：:Artemisinin is the active antimalarial compound obtained from the leaves of Artemisia annua L. Artemisinin, and its semi-synthetic derivatives, are the main drugs used to treat multi-drug-resistant Plasmodium falciparum (one of the human malaria parasite species). The in vitro susceptibility of P. falciparum K1 and 3d...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Silva LF,Magalhães PM,Costa MR,Alecrim Md,Chaves FC,Hidalgo Ade F,Pohlit AM,Vieira PP

更新日期：2012-11-01 00:00:00

abstract：:Leptospirosis is a zoonotic disease caused by pathogenic spirochetes of the Leptospira genus. Vaccination with bacterins has severe limitations. Here, we evaluated the N-terminal region of the leptospiral immunoglobulin-like B protein (LigBrep) as a vaccine candidate against leptospirosis using immunisation strategies...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Forster KM,Hartwig DD,Oliveira TL,Bacelo KL,Schuch R,Amaral MG,Dellagostin OA

更新日期：2015-12-01 00:00:00

abstract：:The influence of altitude and latitude on some structure sizes of Lutzomyia intermedia was noted; several structures of insects collected in higher localities were greater, according to Bergmann's rule. This influence was more remarkable in two localities of the State of Espírito Santo, probably due to greater differe...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Marcondes CB,Lozovei AL,Falqueto A,Brazil RP,Galati E,Aguiar G,Souza N

更新日期：1999-09-01 00:00:00

abstract：:This report describes the development of a SYBR Green I based real time polymerase chain reaction (PCR) protocol for detection on the ABI Prism 7000 instrument. Primers targeting the gene encoding the SSU rRNA were designed to amplify with high specificity DNA from Schistosoma mansoni, in a real time quantitative PCR ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Gomes AL,Melo FL,Werkhauser RP,Abath FG

更新日期：2006-09-01 00:00:00

abstract：:Dipteran polytene chromosomes provide an excellent model for understanding in species complexes, as well as for structural and functional cytogenetics. The status of species in the Culex pipiens complex is controversial and the use of polytene chromosomes for cytogenetic analysis in the subfamily Culicinae has been di...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Campos J,Andrade CF,Recco-Pimentel SM

更新日期：2003-04-01 00:00:00

abstract：:Warileya lumbrerasi n. sp. is described from the northern Peruvian Andes. This species was collected inside houses, and is the seventh species described within the genus Warileya Hertig, 1948. ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Ogusuku E,Perez JE,Davies CR,Villaseca P

更新日期：1996-11-01 00:00:00

abstract：:Only one drug is currently available for the treatment and control of schistosomiasis and the increasing risk of selecting strains of schistosome that are resistant to praziquantel means that the development of new drugs is urgent. With this objective we have chosen to target the enzymes modifying histones and in part...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Pierce RJ,Dubois-Abdesselem F,Caby S,Trolet J,Lancelot J,Oger F,Bertheaume N,Roger E

更新日期：2011-11-01 00:00:00

abstract：:Domiciliated Rhodnius prolixus and sylvatic R. colombiensis were analyzed in order to confirm their genetic divergence and verify the risk that the latter represents in the domiciliation process, and to provide tools for identifying the sources of possible reinfestation by triatomines in human dwellings allowing contr...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Jaramillo C,Montaña MF,Castro LR,Vallejo GA,Guhl F

更新日期：2001-11-01 00:00:00

abstract：:The determination of amino acid changes in the envelope protein by direct sequencing of either genomic RNA or PCR-amplified cDNA fragments provides useful informations for assessing the genetic variability and the geographic distribution of the actually most widespread dengue-2 serotype. The possible link of variation...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Deubel V

更新日期：1992-01-01 00:00:00

abstract：:Angiotensin II (AII), a product of rennin-angiotensin system, exerts an important role on the function of immune system cells. In this study, the effect of AII on the phagocytic activity of mouse peritoneal macrophages was assessed. Mice peritoneal macrophages were cultured for 48 h and the influence of different conc...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Belline P,da Melo PS,Haun M,Palhares FB,Boer PA,Gontijo JA,Figueiredo JF

更新日期：2004-03-01 00:00:00

abstract：:In 2008, we have celebrated the centenary of the discovery of Toxoplasma gondii.Although this ubiquitous protozoan can generate devastating damage in foetuses and newborns, its treatment is the only field in which we have made little progress, despite a huge body of research, and has not yet been validated. Pregnant w...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Peyron F

更新日期：2009-03-01 00:00:00

abstract：:Although vaccines are the best means of protection against influenza, neuraminidase inhibitors are currently the main antiviral treatment available to control severe influenza cases. One of the most frequent substitutions in the neuraminidase (NA) protein of influenza A(H3N2) viruses during or soon after oseltamivir a...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Pontoriero A,Avaro M,Benedetti E,Russo M,Czech A,Periolo N,Campos A,Zamora A,Baumeister E

更新日期：2016-12-01 00:00:00

abstract：:In 2004, the urban presence of Lutzomyia longipalpis was recorded for the first time in Formosa province. In 2006, the first autochthonous case of human urban visceral leishmaniasis (VL) was recorded in Misiones in the presence of the vector, along with some canine VL cases. After this first case, the vector began to ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Bravo AG,Quintana MG,Abril M,Salomón OD

更新日期：2013-12-01 00:00:00

abstract：:Mitochondrial DNA of Biomphalaria tenagophila, a mollusc intermediate host of Schistosoma mansoni in Brazil, was sequenced and characterised. The genome size found for B. tenagophila was 13,722 bp and contained 13 messenger RNAs, 22 transfer RNAs (tRNA) and two ribosomal RNAs (rRNA). In addition to sequencing, the mit...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Jannotti-Passos LK,Ruiz JC,Caldeira RL,Murta SM,Coelho PM,Carvalho OS

更新日期：2010-07-01 00:00:00

abstract：:Different molecular-genetic methods were used to identify a cohort of Leishmania strains from natural foci of zoonotic cutaneous leishmaniasis located in Central Asia, on the former USSR territory. The results obtained using isoenzymes, PCR, restriction fragment length polymorphisms of kDNA and molecular hybridization...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Strelkova MV,Pacheco RS,Bulat SA,Rakitskaya TA

更新日期：1997-01-01 00:00:00

abstract：:Muscina stabulans, M. domestica, Chrysomya putoria, C. megacephala and Stomoxys calcitrans were the most abundant muscoid flies captured in a poultry facility in southeastern Brazil. We examined the gonadotrophic profiles of the females caught at different sites and different times and found that Mu. stabulans and M. ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Avancini RM,Silveira GA

更新日期：2000-03-01 00:00:00

abstract：:A preliminary study of the pharmacokinetic parameters of t-Butylaminoethanethiol (TBAESH) was performed after administration of a single dose (35 mg/kg) either orally or intravenously. Plasma or blood samples were treated with dithiothreitol, perchloric acid and, after filtration, submitted to further purification wit...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Andrade MH,Freire AC,Nelson DL

更新日期：1990-07-01 00:00:00

abstract：:Six clinical isolates of influenza A viruses were examined for hemagglutinin receptor specificity and neuraminidase substrate specificity. All of the viral isolates minimally passaged in mammalian cells demonstrated preferential agglutination of human erythrocytes enzymatically modified to contain NeuAc alpha 2,6Gal s...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Couceiro JN,Baum LG

更新日期：1994-10-01 00:00:00

abstract：:There is no clear understanding of the outcome of reinfection in New World cutaneous leishmaniasis, and its role in the relationship to the development of protection or secondary disease. For this reason, reinfection experiments with homologous (Leishmania panamensis-L. panamensis) and heterologous (L. major-L. paname...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Osorio Y,Gonzalez SJ,Gama VL,Travi BL

更新日期：1998-05-01 00:00:00

abstract：:The objective of this study was to evaluate the feeding behavior of Triatoma vitticeps through the identification of its food sources and the characterization of the blood ingestion process. In addition, we aimed to verify if the saliva of this vector interferes with the perception of the host during the feedings by c...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Souza Rde C,Soares AC,Alves CL,Lorosa ES,Pereira MH,Diotaiuti L

更新日期：2011-02-01 00:00:00

abstract：:Type I diabetes mellitus (insulin-dependent DM = IDDM) is a chronic disease characterized by specific destruction of pancreatic beta cells, resulting in an absolute lack of insulin. Immune mechanisms, genetic susceptibility, and environmental factors are all implicated in the pathogenesis of Type 1 diabetes. This stud...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Fidan I,Yüksel S,Kalkanci A,Imir T,Kustimur S

更新日期：2005-12-01 00:00:00

abstract：:Trypanosomatids are parasites that cause disease in humans, animals, and plants. Most are non-pathogenic and some harbor a symbiotic bacterium. Endosymbiosis is part of the evolutionary process of vital cell functions such as respiration and photosynthesis. Angomonas deanei is an example of a symbiont-containing trypa...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Penha LL,Hoffmann L,Souza SS,Martins AC,Bottaro T,Prosdocimi F,Faffe DS,Motta MC,Ürményi TP,Silva R

更新日期：2016-11-01 00:00:00

abstract：:Cross sectional studies on malaria prevalence was performed in 2001, 2002, and 2004 in Vila Candelária, an urban riverside area of Porto Velho, Rondônia, in the Brazilian Western Amazon, followed by longitudinal surveys on malaria incidence. Vila Candelária is a working class district, provided with electricity, water...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Tada MS,Marques RP,Mesquita E,Dalla Martha RC,Rodrigues JA,Costa JD,Pepelascov RR,Katsuragawa TH,Pereira-da-Silva LH

更新日期：2007-06-01 00:00:00

abstract：:The purpose of this study was to investigate the genotypes of Giardia lamblia from human and animal feces and their epidemiological and clinical characteristics in Argentina, South America. Seventy isolates, 60 from humans (adults and children), eight from dogs and two from cows were processed by polymerase chain reac...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Minvielle MC,Molina NB,Polverino D,Basualdo JA

更新日期：2008-02-01 00:00:00

abstract：:Two techniques for rapid diagnosis, immunofluorescence (IFAT) and enzyme immunoassay (EIA), have been compared with virus isolation in tissue culture for the detection of respiratory syncytial virus (RSV) in specimens of nasopharyngeal secretions. The specimens were obtained from children under five years of age suffe...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Siqueira MM,Ferreira V,Nascimento JP

更新日期：1986-04-01 00:00:00

abstract：:Given their medical and veterinary relevance, the members of the Pipiens Assemblage are a worldwide target of ecological research. The distribution of Culex pipiens s.s. and Cx. quinquefasciatus converge in Buenos Aires, Argentina, where hybrids have been detected. Each member of the assemblage exhibits a distinct eco...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Cardo MV,Rubio A,Junges M,Vezzani D,Carbajo AE

更新日期：2016-11-01 00:00:00

abstract：:This study investigated the rate of human papillomavirus (HPV) persistence, associated risk factors, and predictors of cytological alteration outcomes in a cohort of human immunodeficiency virus-infected pregnant women over an 18-month period. HPV was typed through L1 gene sequencing in cervical smears collected durin...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Meyrelles AR,Siqueira JD,Santos PP,Hofer CB,Luiz RR,Seuánez HN,Almeida G,Soares MA,Soares EA,Machado ES

更新日期：2016-02-01 00:00:00

abstract：:The natural lignans veraguensin and grandisin have been reported to be active against Trypanosoma cruzi bloodstream forms. Aiming at the total synthesis of these and related compounds, we prepared three 2-arylfurans and eight 2,5-diarylfurans. They were evaluated for their potential as T. cruzi trypanothione reductase...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： de Oliveira RB,Vaz AB,Alves RO,Liarte DB,Donnici CL,Romanha AJ,Zani CL

更新日期：2006-03-01 00:00:00

abstract：:A massive and homogeneous amount of amastigote-like forms was detected in the stomodeal valve (SV) and the thoracic mid-gut (TMG) of Leishmania major-infected Phlebotomus papatasi, which received a second blood meal 13 to 21 days post-infection on healthy anaesthetized hamsters. After re-feeding, the infected sand fli...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Añez N,Tang Y,Rojas A,Crisante G,Killick-Kendrick M,Killick-Kendrick R

更新日期：2003-06-01 00:00:00