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Search Results: 1 - 10 of 4576 matches for " Edilberto Nogueira;Collares "
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Shigella in Brazilian children with acute diarrhoea: prevalence, antimicrobial resistance and virulence genes
Sousa, Mireille ?ngela Bernardes;Mendes, Edilberto Nogueira;Collares, Guilherme Birchal;Péret-Filho, Luciano Amedée;Penna, Francisco José;Magalh?es, Paula Prazeres;
Memórias do Instituto Oswaldo Cruz , 2013, DOI: 10.1590/S0074-02762013000100005
Abstract: diarrhoeal disease is still considered a major cause of morbidity and mortality among children. among diarrhoeagenic agents, shigella should be highlighted due to its prevalence and the severity of the associated disease. here, we assessed shigella prevalence, drug susceptibility and virulence factors. faeces from 157 children with diarrhoea who sought treatment at the children's hospital jo?o paulo ii, a reference children′s hospital in belo horizonte, state of minas gerais, brazil, were cultured and drug susceptibility of the shigella isolates was determined by the disk diffusion technique. shigella virulence markers were identified by polymerase chain reaction. the bacterium was recovered from 10.8% of the children (88.2% shigella sonnei). the ipah, iuc, sen and ial genes were detected in strains isolated from all shigellosis patients; set1a was only detected in shigella flexneri. additionally, patients were infected by shigella strains of different ial, sat, sen and set1a genotypes. compared to previous studies, we observed a marked shift in the distribution of species from s. flexneri to s. sonnei and high rates of trimethoprim/sulfamethoxazole resistance.
Associa??o entre cagA e alelos do vacA de Helicobacter pylori e úlcera duodenal em crian?as no Brasil
Ashour, Abdussalam Ali Ramadam;Gusm?o, Valquíria Ribeiro de;Magalh?es, Paula Prazeres;Collares, Guilherme Birchal;Mendes, Edilberto Nogueira;Queiroz, Dulciene Maria de Magalh?es;Rocha, Gifone Aguiar;Rocha, Andreia Maria Camargos;Carvalho, Anfrisina Sales Teles;
Jornal Brasileiro de Patologia e Medicina Laboratorial , 2002, DOI: 10.1590/S1676-24442002000200003
Abstract: helicobacter pylori is now accepted as the most important agent of gastritis in humans and as a risk factor for ulcer disease and gastric carcinoma ethiopathogenesis. the outcome of the infection is associated with several factors, among them bacterial ones such as caga and vaca s1 genotype. we aimed to investigate the association between caga and vaca genotypes in h. pylori strains isolated from children and to correlate these findings with patient's disease. a total of 65 children (24 with duodenal ulcer and 41 without gastric or duodenal ulcer) were included in the study. caga and vaca alleles were identified by pcr in bacterium strains isolated from the gastric mucosa of the studied group. multiple-strain infection was detected in 10 (15.4%) patients. among children with nonmixed infection, s1 allele was found in h. pylori strains isolated from 40 (72.7%), and m1 allele in strains obtained from 34 (61.8%). caga was found in bacterium strains isolated from 38 (69.1%) patients. association between caga and s1-m1 genotype (p = 10-7), and between these genotypes and duodenal ulcer (p = 0.073 and p = 0.037, respectively) was observed. in conclusion, multiple-strain infection is frequent in brazilian children. h. pylori strains harbouring, simultaneously, caga and vaca s1-m1 genotypes are the most frequent in our pediatric population and are associated to ulcer disease.
Prevalência baixa de adenovírus em crian?as com diarreia em Belo Horizonte-MG
Duarte, Ricardo Jenner;Mendes, Edilberto Nogueira;Penna, Francisco José;Péret Filho, Luciano Amedée;Magalh?es, Paula Prazeres;
Jornal Brasileiro de Patologia e Medicina Laboratorial , 2012, DOI: 10.1590/S1676-24442012000400005
Abstract: introduction: several microorganisms, among them enteric adenovirus, are widely recognized as etiological agents of acute diarrhea. the association between adenovirus and the disease varies among geographical regions and is poorly known in brazil. objectives: to investigate the presence of adenovirus in stool samples from children with and without diarrhea in belo horizonte-mg. to study factors associated with enteric adenovirus infection. material and method: a qualitative immunochromatographic assay (kit vikia? rota-adeno, biomérieux) was performed to detect adenovirus antigens in stool samples from 268 children with acute diarrhea and 124 without diarrhea at hospital infantil jo?o paulo ii from january/2005 to december/2006. clinical, laboratory, and epidemiologic data were recorded in spss database (spss statistical package, ibm). results: adenovirus was detected in 16 samples (4.1%): 12 of them (4.5%) were from children with acute diarrhea and 4 of them (3.2%) from children without diarrhea. the viral infection was more prevalent among girls and the age distribution was homogenous. among the 16 children infected by adenovirus,11 (68.8%) were younger than 12 months old. however, no significant statistical difference was observed within the analyzed parameters. there was no seasonal distribution of adenovirus infection. conclusion: our data demonstrate that the prevalence of enteric adenovirus infection is low among children with diarrhea in belo horizonte-mg.
Biology of the wasp Polistes (Epicnemius) cinerascens Saussure (Hymenoptera: Vespidae)
Giannotti, Edilberto;
Anais da Sociedade Entomológica do Brasil , 1997, DOI: 10.1590/S0301-80591997000100008
Abstract: studies on nests of the social wasp polistes (epicnemius) cinerascens saussure showed correlation between the size of the comb and thickness of the peduncle, besides of the height of the complete cells and the number of generations produced. the duration of the colony cycle (199.3 days), the number of cells built (102.9) and adults produced (94.2) allowed to establish the rates: 0.5 cells/day, 0.3 adults/day, and 0.8 adults/cell, the % of productive cells/ nest (55.2), and the number of the generations/colony (up to 4 generations). the number of instars was 5; the growing ratio 1.3; the duration of the immature stages was eggs = 13.0 days, larvae = 23.7, pupae = 22.2 and total duration = 58.6 days; and the longevity of adult wasps = 38.3 days.
Suicídio: um alerta para uma sociedade autodestrutiva
Edilberto Daolio
Saúde Coletiva , 2010,
Abstract: El suicidio directo, es decir, el acto de tirar su propia vida, es un fenómeno muy complejo que debe ser estudiado entre múltiplas disciplinas. Las tasas de suicidio en Brasil aún son relativamente bajas en comparación con otros países, pero la tasa de suicidios ha aumentado a o tras a o en nuestro país, lo que hace el objeto de este estudio más pertinente. Observado este aumento tanto por en el gobierno brasile o cuanto por organizaciones internacionales, como la Organización Mundial de la Salud, numerosos documentos han sido producidos con el fin de crear una base de prevención de suicidios y divulgar más información sobre este fenómeno para los distintos segmentos de la sociedad, lo que fue una preocupación muy peque a en el pasado. Aunque el suicidio es un fenómeno causado por muchos factores, hay que analizar nuestra sociedad como fomentadora del comportamiento autodestructivo, lo que corrobora con la actitud extrema del suicidio.
Prevalence of Salmonella enterica in children aged less than 5 years with acute diarrhea and controls in Teresina-PI
Nunes, Maria do Rosário Concei??o Moura;Mendes, Edilberto Nogueira;Nunes, Jo?o Maurício Moura;Magalh?es, Paula Prazeres;Penna, Francisco José;
Jornal Brasileiro de Patologia e Medicina Laboratorial , 2012, DOI: 10.1590/S1676-24442012000200006
Abstract: we investigated the prevalence of salmonella enterica (se) among children (n = 400/250 with diarrhea) in teresina-pi from 2004 to 2007. se newport was isolated from two samples and o-c2-c3-nd, enteritidis, and muenchen serological variants were isolated from one sample each. se infection was more prevalent among children aged less than six months. increased fecal volume, 3-10 evacuations/day, vomit and fever were reported for all cases. resistance to nalidixic acid (nal) and sulphamethoxazole-trimethoprim (sxt) was ubiquitous. our data substantiate the need for monitoring se infections worldwide and the emergence of antimicrobial resistance.
Prevalence of Helicobacter pylori Infection in a Rural Area of the State of Mato Grosso, Brazil
Dutra Souto, Francisco José;Jesus Fernandes Fontes, Cór;Aguiar Rocha, Gifone;Rocha de Oliveira, Andreia Maria;Nogueira Mendes, Edilberto;Magalh?es Queiroz, Dulciene Maria de;
Memórias do Instituto Oswaldo Cruz , 1998, DOI: 10.1590/S0074-02761998000200006
Abstract: the prevalence of helicobacter pylori infection was evaluated by elisa in 40 children and teenagers and in 164 adults from a rural area of the state of mato grosso, brazil. antibodies to h. pylori were detected in the serum of 31 (77.5%) children and teenagers and in 139 (84.7%) adults. the prevalence of infection increased with age (c2 for trend, p < 0.01) even though no variations occurred in the region in the present century in terms of living conditions or sanitation, economical development and migratory influx supporting the hypothesis that the infection is also acquired during later life in developing countries. an inverse correlation was observed between the prevalence of infection and annual family income (c2 for trend, p < 0.013). there was no correlation between type of system for sewage disposal and prevalence of infection (p = 0.8). in conclusion, the prevalence of h. pylori infection in nossa senhora do livramento, a rural area from brazil, is very high and similar to that observed in other developing countries. furthermore, the increase in the prevalence of infection with age observed in this population seems to be due to both, cohort effect and acquisition of the infection during later life
Effect of bacterial lipopolysaccharide on gastric emptying of liquids in rats
Collares E.F.
Brazilian Journal of Medical and Biological Research , 1997,
Abstract: The objectives of the present investigation were 1) to study the effect of bacterial lipopolysaccharide (LPS) on rat gastric emptying (GE) and 2) to investigate a possible involvement of the vagus nerve in the gastric action of LPS. Endotoxin from E. coli (strain 055:B5) was administered sc, ip or iv to male Wistar rats (220-280 g body weight) at a maximum dose of 50 μg/kg animal weight. Control animals received an equivalent volume of sterile saline solution. At a given time period after LPS administration, GE was evaluated by measuring gastric retention 10 min after the orogastric infusion of a test meal (2 ml/100 g animal weight), which consisted of 0.9% NaCl plus the marker phenol red (6 mg/dl). One group of animals was subjected to bilateral subdiaphragmatic vagotomy or sham operation 15 days before the test. A significant delay in GE of the test meal was observed 5 h after iv administration of the endotoxin at the dose of 50 μg/kg animal weight. The LPS-induced delay of GE was detected as early as 30 min and up to 8 h after endotoxin administration. The use of different doses of LPS ranging from 5 to 50 μg/kg animal weight showed that the alteration of GE was dose dependent. In addition, vagotomized animals receiving LPS displayed a GE that was not significantly different from that of the sham control group. However, a participation of the vagus nerve in LPS-induced delay in GE could not be clearly demonstrated by these experiments since vagotomy itself induced changes in this gastric parameter. The present study provides a suitable model for identifying the mechanisms underlying the effects of LPS on gastric emptying
Forecast of acute respiratory infections: expected nonepidemic mobidity in Cuba
Aguirre, Armando;Gonzalez, Edilberto;
Memórias do Instituto Oswaldo Cruz , 1992, DOI: 10.1590/S0074-02761992000300015
Abstract: a forecast of nonepidemic morbidity due to acute respiratory infections were carry out by using time series analysis. the data consisted of the weekly reports of medical patient consultation from ambulatory facilities from the whole country. a version of regression model was fitted to the data. using this approach, we were able to detect the starting data of the epidemic under routine surveillance conditions for various age groups. it will be necessary to improve the data reporting system in order to introduce these procedures at the local health center level, as well as on the provincial level.
The feasibility of forecasting influenza epidemics in Cuba
Aguirre, Armando;Gonzalez, Edilberto;
Memórias do Instituto Oswaldo Cruz , 1992, DOI: 10.1590/S0074-02761992000300014
Abstract: a large influenza epidemic took place in havana during the winter of 1988. the epidemiologic surveillance unit of the pedro kouri institute of tropical medicine detected the begining of the epidemic wave. the rvachev-baroyan mathematical model of the geographic spread of an epidemic was used to forecast this epidemic under routine conditions of the public health system. the expected number of individuals who would attend outpatient services, because of influenza-like illness, was calculated and communicated to the health authorities within enough time to permit the introduction of available control measures. the approximate date of the epidemic peak, the daily expected number of individuals attending medical services, and the approximate time of the end of the epidemic wave were estimated. the prediction error was 12%. the model was sufficienty accurate to warrant its use as a pratical forecasting tool in the cuban public health system.
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