The fumigant and repellent activity of aliphatic lactones against Pediculus humanus capitis (Anoplura: Pediculidae).

abstract：:In this work, the susceptibility to benznidazole of two parental Trypanosoma cruzi strains, Colombian and Berenice-78, was compared to isolates obtained from dogs infected with these strains for several years. In order to evaluate the susceptibility to benznidazole two groups of mice were infected with one of five dis...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Veloso VM,Carneiro CM,Toledo MJ,Lana M,Chiari E,Tafuri WL,Bahia MT

更新日期：2001-10-01 00:00:00

abstract：:Project Horizonte, an open cohort of homosexual and bisexual human immunodeficiency virus (HIV-1) negative men, is a component of the AIDS Vaccine Program, in Belo Horizonte, Minas Gerais, Brazil. The objective of this study was to compare volunteers testing HIV positive at cohort entry with a sample of those who test...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Carneiro M,Cardoso FA,Greco M,Oliveira E,Andrade J,Greco DB,Antunes CM

更新日期：2003-04-01 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：:Sand flies were collected in the central region of the state of Rondônia (W 64 degrees 30' to 63 degrees 00' and S 10 degrees 00'to 11 degrees 00') using Shannon and CDC light traps from October 1997 to August 2000. A total of 85,850 specimens representing 78 named species were captured. Of these 14 were new records f...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Gil LH,Basano SA,Souza AA,Silva MG,Barata I,Ishikawa EA,Camargo LM,Shaw JJ

更新日期：2003-09-01 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：:CD8+ T cells have been implicated as critical effector cells in protection against the pre-erythrocytic stage of malaria in mice and humans following irradiated sporozoite immunization. Immunization experiments in animal models by several investigators have suggested different strategies for vaccination against malari...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Oliveira-Ferreira J,Daniel-Ribeiro C

更新日期：2001-02-01 00:00:00

abstract：:Applications of flow cytometry to clinical and experimental hematopoietic stem cell transplantation (HSCT) are discussed in this review covering the following topics: diagnosis and classification of lymphohematologic disorders, quantitation of hematopoietic progenitors in the graft, lymphohematopoietic reconstitution ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Voltarelli JC

更新日期：2000-05-01 00:00:00

abstract：:Cells die through a programmed process or accidental death, know as apoptosis or necrosis, respectively. Bothrops jararaca is a snake whose venom inhibits the growth of Trypanosoma cruzi epimastigote forms causing mitochondrion swelling and cell death. The aim of the present work was to determine the type of death ind...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Deolindo P,Teixeira-Ferreira AS,Melo EJ,Arnholdt AC,Souza Wd,Alves EW,DaMatta RA

更新日期：2005-02-01 00:00:00

abstract：:Major emergency efforts are being mounted for each vector-borne disease epidemiological crisis anew, while knowledge about the biology of arthropods vectors is dwindling slowly but continuously, as is the number of field entomologists. The discrepancy between the rates of production of knowledge and its use and need f...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Casas J,Lazzari C,Insausti T,Launois P,Fouque F

更新日期：2016-11-01 00:00:00

abstract：:A new species of planorbid mollusc, Plesiophysa dolichomastix (Greek dolichos = long, mastix = flagellum), collected from Lagoa da Pedra, municipality of Santa Rosa, state of Goiás, Brazil (15 degrees 01'S, 47 degrees 13'W) is described. It is indistinguishable by the shell characters from the five congeneric species ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Paraense WL

更新日期：2002-06-01 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：: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：:This study's objective was to search for Cryptosporidium sp. in diarrheic feces from children aged zero to 12 years and cared for at medical units within Universidade Federal de Uberlândia or at a private practice in Uberlândia, State of Minas Gerais, Brazil, from September 1992 to August 1993. Three fecal samples pre...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Gennari-Cardoso ML,Costa-Cruz JM,de Castro E,Lima LM,Prudente DV

更新日期：1996-09-01 00:00:00

abstract：:Trypanosoma cruzi acute infections often go unperceived, but one third of chronically infected individuals die of Chagas disease, showing diverse manifestations affecting the heart, intestines, and nervous systems. A common denominator of pathology in Chagas disease is the minimal rejection unit, whereby parasite-free...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Teixeira AR,Nascimento RJ,Sturm NR

更新日期：2006-08-01 00:00:00

abstract：:In visceral leishmaniasis, phlebotomine vectors are targets for control measures. Understanding the ecosystem of the vectors is a prerequisite for creating these control measures. This study endeavours to delineate the suitable locations of Phlebotomus argentipes with relation to environmental characteristics between ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Kesari S,Bhunia GS,Kumar V,Jeyaram A,Ranjan A,Das P

更新日期：2011-08-01 00:00:00

abstract：:The susceptibility of Anopheles aquasalis (F3 generation) and An. darlingi (F1 generation) to Plasmodium vivax circumsporozoite protein phenotypes from a limited number of blood samples of malaria patients in Belém, state of Pará, Brazil, was examined A polymerase chain reaction was used to determine the P. vivax phen...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： da Silva AN,Santos CC,Lacerda RN,Machado RL,Póvoa MM

更新日期：2006-08-01 00:00:00

abstract：:An increased plasma concentration of von Willebrand factor (vWF) is detected in individuals with many infectious diseases and is accepted as a marker of endothelium activation and prothrombotic condition. To determine whether ExoU, a Pseudomonas aeruginosa cytotoxin with proinflammatory activity, enhances the release ...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Freitas C,Assis MC,Saliba AM,Morandi VM,Figueiredo CC,Pereira M,Plotkowski MC

更新日期：2012-09-01 00:00:00

abstract：:Respiratory failure (RF) is the main cause of hospital admission in HIV/AIDS patients. This study assessed comorbidities and laboratory parameters in HIV/AIDS inpatients with RF (N = 58) in relation to those without RF (N = 36). Tuberculosis showed a huge relative risk and platelet counts were slightly higher in HIV/A...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Gama WM,Oliveira LB,Chaves YO,Ribeiro F,Almeida TVR,Baptista BJA,Santana MF,Ferreira LC,Lacerda MVG,Nogueira PA

更新日期：2020-09-14 00:00:00

abstract：:In this study, HIV-1 viral blood quantitation determined by Nucleic Acid Sequence Based Amplification (NASBA) was compared with other surrogate disease progression markers (antigen p24, CD4/CD8 cell counts and beta-2 microglobulin) in 540 patients followed up at São Paulo, SP, Brazil. HIV-1 RNA detection was statistic...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Sitnik R,Pinho JR

更新日期：1998-05-01 00:00:00

abstract：BACKGROUND:The time of progression towards AIDS can vary greatly among seropositive patients, and may be associated with host genetic variation. The NR1I2 (PXR) gene, a ligand-activated transcription factor, regulates the transcription immune pathway genes and can therefore be targets of viral replication mechanisms in...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Medeiros RM,Menti CF,Benelli JL,Matte MC,Melo MG,Almeida SE,Fiegenbaum M

更新日期：2017-04-01 00:00:00

abstract：:Five field populations of Musca domestica L. collected in poultry farms were bioassayed in order to detect possible resistance to the larvicide cyromazine in Brazil. The concentrations used were 0, 0.5, 0.1, 0.2, 0.4, 1, 2, 4 and 8 ppm. Three populations (Petrópolis, RJ, Montes Claros, MG and Promissão, SP) were resis...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Pinto MC,do Prado AP

更新日期：2001-07-01 00:00:00

abstract：:Positive Montenegro's skin test is a delayed type hypersensitivity reaction widely used as indicative of previous infection with Leishmania in both humans and dogs. Montenegro's antigen consists of a crude Leishmania antigen solution, usually containing thimerosal as preserving agent. In this work it is shown that a l...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Paranhos-Silva M,Pontes-de-Carvalho LC,de Sá Oliveira GG,Nascimento EG,dos-Santos WL

更新日期：2001-07-01 00:00:00

abstract：:Mutations in the rpoB locus confer conformational changes leading to defective binding of rifampin (RIF) to rpoB and consequently resistance in Mycobacterium tuberculosis. Polymerase chain reaction-single-strand conformation polymorphism (PCR-SSCP) was established as a rapid screening test for the detection of mutatio...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Isfahani BN,Tavakoli A,Salehi M,Tazhibi M

更新日期：2006-09-01 00:00:00

abstract：:Chagas heart disease (CHD) results from infection with the protozoan parasite Trypanosoma cruzi and is the leading cause of infectious myocarditis worldwide. It poses a substantial public health burden due to high morbidity and mortality. CHD is also the most serious and frequent manifestation of chronic Chagas diseas...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Rassi A Jr,Rassi A,Marin-Neto JA

更新日期：2009-07-01 00:00:00

abstract：:The population biology of three populations of Panstrongylus megistus was compared to determine possible influence on the behaviour and epidemiological importance of this species. The results demonstrated differences in terms of egg eclosion time, nymphal mortality and development rates, and feeding and defaecation ra...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Barbosa SE,Soares RP,Pires HH,Diotaiuti L

更新日期：2001-08-01 00:00:00

abstract：:In Brazil, until 2004, the immunization policy against diphtheria involved childhood vaccination with no official routine booster dose administered after 15 years of age. This study assessed functional antibody levels against diphtheria among blood donors. A total of 140 blood samples were collected, and diphtheria an...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Pimenta FP,Damasco PV,Cerbino Neto J,Lopes GS,Hirata R Jr,Milagres LG,Mattos-Guaraldi AL

更新日期：2006-06-01 00:00:00

abstract：:The effect of deltamethrin of the sandfly population in a focus of American Cutaneous Leishmaniasis in Viana, Espírito Santo State is described. The phlebotomine population density was determined inside and outside houses during a one year period in a treated and untreated area. The results showed a significant reduct...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Falcão AL,Falcão AR,Pinto CT,Gontijo CM,Falqueto A

更新日期：1991-10-01 00:00:00

abstract：:Previous investigations showed that Schistosoma mansoni infection aggravates protein malabsorption in undernourished mice and this can be reverted by administration of casein hydrolysate. The present study was undertaken to evaluate the effects of ingestion of casein hydrolysate for long periods. Albino Swiss mice wer...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Ferreira HS,Coutinho EM,Nascimento GR,Carvalho MC

更新日期：1998-01-01 00:00:00

abstract：:Multi-resistant gram-negative rods are important pathogens in intensive care units (ICU), cause high rates of mortality, and need infection control measures to avoid spread to another patients. This study was undertaken prospectively with all of the patients hospitalized at ICU, Anesthesiology of the Hospital São Paul...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Martins ST,Moreira M,Furtado GH,Marino CG,Machado FR,Wey SB,Medeiros EA

更新日期：2004-05-01 00:00:00

abstract：:The chromatin of Trypanosoma congolense was analyzed by electron microscopy. The chromatin is organized as nucleosome filaments but does not form a 30 nm fiber. There are five groups of histones, including a histone H1-like protein, which as a molecular weight within the range of the core histones, and is extremely hy...

journal_title：Memorias do Instituto Oswaldo Cruz

authors： Schlimme W,Burri M,Betschart B,Hecker H

更新日期：1994-04-01 00:00:00