DNA prime-protein boost based vaccination with a conserved region of leptospiral immunoglobulin-like A and B proteins enhances protection against leptospirosis.

abstract：:Granuloma size is the variable most frequently used to evaluate the immunopathogenesis of schistosome infections. However, hepatic fibrosis is at the least an equally relevant variable. Hepatic fibrosis and the size of circumoval granulomas are frequently dissociated in experimental murine Schistosoma mansoni and S. j...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Cheever AW

更新日期：1997-09-01 00:00:00

abstract：:Triatoma brasiliensis is composed of at least four geographic populations (brasiliensis, melanica, macromelasoma, and juazeiro) that have distinct chromatic, morphologic, biologic and ecologic patterns, and genetic composition. Reciprocal crosses between all pairwise combinations were carried out in order to evaluate ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Costa J,Almeida CE,Dujardin JP,Beard CB

更新日期：2003-07-01 00:00:00

abstract：:Hepatitis B virus (HBV) has a low endemicity in Rio de Janeiro, Brazil. Sexual transmission must play an important role in this virus, but the prevalence and risk factors have never been properly investigated. The aim of this paper is to determine the prevalence and risk factors for HBV infection in patients attending...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Oliveira LH,Silva IR,Xavier BL,Cavalcanti SM

更新日期：2001-07-01 00:00:00

abstract：:In schistosomiasis, the host/parasite interaction remains not completely understood. Many questions related to the susceptibility of snails to infection by respective trematode still remain unanswered. The control of schistosomiasis requires a good understanding of the host/parasite association. In this work, the susc...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Abdel-Hamid AH,Rawi SM,Arafa AF

更新日期：2006-12-01 00:00:00

abstract：:We have been interested in identifying genes that play a role in reproduction of the mosquito Aedes aegypti. Our interests are currently focused on the vitellogenin genes which in the mosquito are expressed only in the fat body in response to the insect steroid hormone, 20-hydroxyecdysone. Four of the five vitellogeni...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Hamblin MT,Marx JL,Wolfner MF,Hagedorn HH

更新日期：1987-01-01 00:00:00

abstract：:We describe a technique to separate male and female pupae of sand flies. This has reduced the labour to separate flies after emergence and also allows the isolation of unmated adults for behavioural and physiological studies. ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Brazil BG,Brazil RP

更新日期：2000-07-01 00:00:00

abstract：:The seroprevalence of toxoplasmosis in 832 pregnant women in Miracema, Rio de Janeiro, was determined and 75.1% (625) and 2.0% (17) were anti-Toxoplasma gondii IgG and IgM positive, respectively. Out of the 17 IgM positive pregnant women, only one had low avidity IgG corresponding to the acute phase of the infection. ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Ribeiro AC,Mutis MS,Fernandes O

更新日期：2008-09-01 00:00:00

abstract：:This paper presents epidemiological, laboratory, and clinical data on 12 years of dengue virus activity in the State of Rio de Janeiro from the time the disease was first confirmed virologically in April 1986 through April 1998. DEN-1 and DEN-2 viruses are the serotypes circulating in the state and were responsible fo...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Nogueira RM,Miagostovich MP,Schatzmayr HG,dos Santos FB,de Araújo ES,de Filippis AM,de Souza RV,Zagne SM,Nicolai C,Baran M,Teixeira Filho G

更新日期：1999-05-01 00:00:00

abstract：:There is a paucity of studies on the cell biology of Sporothrix luriei, the less common of the pathogenic Sporothrix species worldwide. The production of DHN-melanin, eumelanin, and pyomelanin were evaluated on the mycelial and yeast forms of the S. luriei ATCC 18616 strain. The mycelial form of this species produced ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Cruz ILR,Figueiredo-Carvalho MHG,Zancopé-Oliveira RM,Almeida-Paes R

更新日期：2018-01-01 00:00:00

abstract：:Genetic typing of pathogenic agents and of vectors has known impressive developments in the last 10 years, thanks to the progresses of molecular biology, and to the contribution of the concepts of evolutionary genetics. Moreover, we know more and more on the genetic susceptibility of man to infectious diseases. I prop...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Tibayrenc M

更新日期：1998-09-01 00:00:00

abstract：:An experimental murine model was used to verify the viability and pathogenicity of coccoid Helicobacter pylori. For this purpose, 27 BALB/c mice were inoculated intragastrically with 1 ml broth culture (10(8)organisms/ml) of a coccoid H. pylori clinical isolate. The animals were divided into two groups. Nine were infe...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Rabelo-Gonçalves EM,Nishimura NF,Zeitune JM

更新日期：2002-12-01 00:00:00

abstract：:Chimpanzees are being used in the study of immune response to Plasmodium falciparum malaria pre-erythrocytic stages (MPES). Responses induced by immunisation with recombinant/synthetic antigens and by irradiated sporozoites are being evaluated in a model system that is phylogenetically close to humans and that is amen...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Thomas AW,Slierendregt B,Mons B,Druilhe P

更新日期：1994-01-01 00:00:00

abstract：:As pyrethroids are presently the favored group of insecticides to control triatomines, we performed a series of bioassays to determine the intrinsic activity of some of the main compounds used in the control campaigns, against five of the main species of triatomines to be controlled. Comparing the insecticides it can ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Oliveira Filho AM

更新日期：1999-01-01 00:00:00

abstract：:Tungiasis is a parasitic skin disease widespread in resource-poor urban and rural communities in Brazil. Inhabitants of an urban slum in Northeast Brazil were examined for the presence of tungiasis lesions and followed-up twice a week for a period of three weeks. Each time the number, stages, and topographic localizat...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Feldmeier H,Kehr JD,Poggensee G,Heukelbach J

更新日期：2006-02-01 00:00:00

abstract：:Sand fly identification is complex because it depends on the expertise of the taxonomist. The females show subtle morphological differences and the occurrence of the species complexes are usual in this taxon. Therefore, a fragment of the cytochrome c oxidase subunit I (COI) gene is used for taxon barcoding to resolve ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Laurito M,Ontivero IM,Almirón WR

更新日期：2019-11-28 00:00:00

abstract：:A pseudogene, designated as "ps(5.8S+ITS-2)", paralogous to the 5.8S gene and internal transcribed spacer (ITS)-2 of the nuclear ribosomal DNA (rDNA), has been recently found in many triatomine species distributed throughout North America, Central America and northern South America. Among characteristics used as crite...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Zuriaga MA,Mas-Coma S,Bargues MD

更新日期：2015-05-01 00:00:00

abstract：:In this work, a murine experimental model of toxocariasis has been developed in BALB/c, C57BL/10 and C3H murine strains orally inoculated with 4,000 Toxocara canis embryonated eggs, in order to investigate the isotype-specific immune responses against excretory-secretory antigens from larvae. T. canis specific IgG+M, ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Cuéllar C,Fenoy S,del Aguila C,Guillén JL

更新日期：2001-05-01 00:00:00

abstract：:Host lipids have been implicated in the pathogenesis of Toxoplasma gondii infection. To determine if Toxoplasma infection influences the lipid status in the normal host, we assessed serum lipids of Swiss-Webster mice during infection with the BGD-1 strain (type-2) at a series of time points. Mice were bled at days zer...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Milovanović I,Vujanić M,Klun I,Bobić B,Nikolić A,Ivović V,Trbovich AM,Djurković-Djaković O

更新日期：2009-03-01 00:00:00

abstract：:The objective of this work was to characterize, and compare different morphological types of hemocytes of Rhodnius prolixus, Rhodnius robustus, Rhodnius neglectus, Triatoma infestans, Panstrongylus megistus, and Dipetalogaster maximus. This information provides the basis for studying the cellular immune systems of the...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： de Azambuja P,Garcia ES,Ratcliffe NA

更新日期：1991-01-01 00:00:00

abstract：:Schistosoma mansoni is one of the three main causative agents of human schistosomiasis, a major health problem with a vast socio-economic impact. Recent advances in the proteomic analysis of schistosomes have revealed that peptidases are the main virulence factors involved in the pathogenesis of this disease. In this ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Silva LL,Marcet-Houben M,Zerlotini A,Gabaldón T,Oliveira G,Nahum LA

更新日期：2011-11-01 00:00:00

abstract：:This is the first report on occurrence of Biomphalaria straminea in the district of São José de Almeida (municipality of Jaboticatubas) State of Minas Gerais, Brazil. The presence of B. glabrata and B. tenagophila had already been reported in this area. Such municipality is part of the metropolitan region of Belo Hori...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Massara CL,Carvalho Odos S,Caldeira RL,Jannotti-Passos LK,Schall VT

更新日期：2002-01-01 00:00:00

abstract：:Hepatosplenic schistosomiasis was the first human disease in which the possibility of extensive long standing hepatic fibrosis being degraded and removed has been demonstrated. When such changes occurred, the main signs of portal hypertension (splenomegaly, esophageal varices) progressively disappeared, implying that ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Andrade ZA,Baptista AP,Santana TS

更新日期：2006-09-01 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：:A new species of Brazilian phlebotomine sandfly found in Brazil, municipality of Diamantina, state of Minas Gerais, is described based on males and females collected in a quartzite cave. The body of spermathecae is continuous to the individual duct, lanky and tapering at the end, with conical shaped, not striated and ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Barata RA,Serra e Meira PC,Carvalho GM

更新日期：2012-12-01 00:00:00

abstract：:BACKGROUND Paracoccidioides spp. causes paracoccidioidomycosis (PCM), an important and frequent systemic mycosis that occurs in Latin America. The infectious process begins with contact between the fungus and lung cells, and the molecular pattern of this interaction is currently poorly understood. MicroRNAs (miRNAs) a...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Singulani JL,Silva JFD,Gullo FP,Costa MC,Fusco-Almeida AM,Enguita FJ,Mendes-Giannini MJS

更新日期：2020-01-01 00:00:00

abstract：:Angiostrongylus costaricensis is the causative agent of abdominal angiostrongyliasis, a zoonotic infection that may produce severe eosinophilic enterocolitis or hepatitis in humans. Parasites are usually not released in stools and serology has an important role in diagnosis. Since cross-reactivity is demonstrated betw...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Graeff-Teixeira C,Pascoal VF,Rodriguez R,Morassutti AL,Intapan PM,Maleewong W

更新日期：2020-09-21 00:00:00

abstract：:Penicillin tolerance among 67 strains of beta-hemolytic streptococci was examined by determining the ratio of the minimal bactericidal concentration to the minimal inhibitory concentration as 32 or greater. Tolerance was demonstrated in 15 group A strains and in 11.7, and 4 of groups B, C and G, respectively. Thereaft...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Avelino CC,Benchetrit LC

更新日期：1995-07-01 00:00:00

abstract：:While the eosinophil's effector functions clearly can contribute to the pathogenesis of allergic diseases, the evolutionary benefit to having eosinophils as a distinct class of leukocyte is not clear, especially if one must reconsider the nominally beneficial role of eosinophils in parasite host defense, Eosinophils a...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Weller PF,Lim K

更新日期：1997-01-01 00:00:00

abstract：:Trypanosoma rangeli, a parasite generally considered non-pathogenic for man, is the second species of human trypanosome to be reported from the New World. The geographical distribution of T. rangeli often overlaps with that of T. cruzi, the same vertebrate and invertebrate hosts being infected. Their differentiation t...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Guhl F,Vallejo GA

更新日期：2003-06-01 00:00:00

abstract：:The study was set up to evaluate the impact of two commercial larvicide formulations, Bacillus thuringiensis serovar israelensis base (Bti) at 15 ppm/1 min and temephos at 0.03 ppm of active ingredient, used to control Simulium pertinax populations, on associated non-target entomofauna occupying the same breeding site...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： de Araújo-Coutinho CJ,Cunha Ade B,Serra-Freire NM,de Mello RP

更新日期：2003-07-01 00:00:00