37 research outputs found
AVALIAĂĂO ECONĂMICA DOS FUNDOS CONSTITUCIONAIS DE FINANCIAMENTO DO NORDESTE E DO NORTE (FNE E FNO)
Aortic Response to Strength Training and Spirulina platensis Dependent on Nitric Oxide and Antioxidants
Studies have shown that supplementation with Spirulina platensis improves vascular reactivity. However, it is unclear whether in association with strength training this effect can be enhanced. Thus, this study aimed to determine the effects of strength training and S. platensis on the reactivity of the aorta from Wistar rat and the possible mechanisms involved. The animals were supplemented with S. platensis and divided into sedentary (SG, SG50, SG150, and SG500) and trained groups (TG, TG50, TG150, and TG500). Nitrite, malondialdehyde (MDA) and antioxidant activity were determined by biochemical assays. To evaluate vascular response, cumulative concentrationâresponse curves to phenylephrine (PHE) and acetylcholine (ACh) were constructed. L-NAME was used to assess the participation of nitric oxide (NO). It was observed that the PHE contractile potency was reduced in TG50, TG150, and TG500 groups compared to SG50, SG150, and SG500 groups, respectively. However, the presence of L-NAME increased the contractile response in all groups. Strength training potentiated the increase in relaxing activity induced by S. platensis, where the pCE50 values of ACh increased in TG150 and TG500. These responses were accompanied by increased nitrite production, MDA reduction and increased antioxidant activity in the aorta of both TG150 and TG500 groups. Thus, the present study demonstrated that combined with strength training, S. platensis potentiates vascular improvement through the participation of NO and reduction of oxidative stress
Canopy Height and Its Relationship with Leaf Area Index and Light Interception of Tropical Grasses
Photosynthetic tissues, mainly green leaves, are the major component of forage growth and development. The amount of these tissues in a forage plant is influenced directly by the cutting management, which is based on cutting frequency and stubble height. It is usual to recommend as a management practice to cut (or graze) the forage whenever it reaches a given stubble height. Brougham (1956) stated that, when the forage canopy is intercepting 95% of the photosynthetic active radiation, this is the critical leaf area index (LAI), which means the forage is near its maximum growth rate without shading itself. There is also the optimum LAI, where the forage reaches the maximum point of mass accumulation, indicating time to start grazing or cut. Generally the critical and optimum LAI have close values, but they are not necessarily the same (Brown and Blaser, 1968). This trial evaluated the relationship among canopy height, leaf area index, and light interception in ten different tropical grasses
Reproductive responses and productive characteristics in ewes supplemented with detoxified castor meal for a long period
Fitossociologia e anĂĄlise comparativa da composição florĂstica do cerrado da flora de Paraopeba-MG
Reproductive strategies of two Curimatidae species in a Mogi Guaçu impoundment, upper Paranå River basin, São Paulo, Brazil
DĂvida pĂșblica, poupança em conta corrente do governo e superĂĄvit primĂĄrio: uma anĂĄlise de sustentabilidade Public debt, government current account saving and primary surplus: analysis of sustainability
<abstract language="eng">On this paper, we propose a change in the primary surplus' target by the government current account saving. That concept excludes public investment from primary surplus. However, of that change has raised a question about if government current account saving represents a sustainable fiscal policy. Thus, this paper analyses if the change in the primary surplus' target by the government current account saving implies a meaning modification on the debt-to-GDP ratio path. The empirical analysis, which is based on Brazilian monthly data for the period 1999-2005, suggests that the change in fiscal target does not mean a lack of sustain-ability
Rotavirus antigenemia as a common event among children hospitalised for severe, acute gastroenteritis in Belém, northern Brazil
This study received financial support from the Evandro Chagas Institute (IEC),
Health Surveillance Secretariat, which supported the study team to perform
sample collection, analysis, interpretation of the data obtained and writing
the manuscript. The National Council for Scientific and Technological
Development (CNPq) provided financial support to purchase laboratory kits
for use in the analysis.MinistĂ©rio da SaĂșde. Secretaria de VigilĂąncia em SaĂșde. Instituto Evandro Chagas. Ananindeua, PA, Brasil.MinistĂ©rio da SaĂșde. Secretaria de VigilĂąncia em SaĂșde. Instituto Evandro Chagas. Ananindeua, PA, Brasil.MinistĂ©rio da SaĂșde. Secretaria de VigilĂąncia em SaĂșde. Instituto Evandro Chagas. Ananindeua, PA, Brasil.MinistĂ©rio da SaĂșde. Secretaria de VigilĂąncia em SaĂșde. Instituto Evandro Chagas. Ananindeua, PA, Brasil.MinistĂ©rio da SaĂșde. Secretaria de VigilĂąncia em SaĂșde. Instituto Evandro Chagas. Ananindeua, PA, Brasil.Federal University of ParĂĄ State. BelĂ©m, PA, Brazil.Federal University of ParĂĄ State. BelĂ©m, PA, Brazil.Federal University of ParĂĄ State. BelĂ©m, PA, Brazil.Federal University of ParĂĄ State. BelĂ©m, PA, Brazil.Federal University of ParĂĄ State. BelĂ©m, PA, Brazil.MinistĂ©rio da SaĂșde. Secretaria de VigilĂąncia em SaĂșde. Instituto Evandro Chagas. Ananindeua, PA, Brasil.MinistĂ©rio da SaĂșde. Secretaria de VigilĂąncia em SaĂșde. Instituto Evandro Chagas. Ananindeua, PA, Brasil.MinistĂ©rio da SaĂșde. Secretaria de VigilĂąncia em SaĂșde. Instituto Evandro Chagas. Ananindeua, PA, Brasil.Background: Rotavirus antigenemia and RNAemia (the presence of rotavirus RNA in serum) have been commonly
identified among paediatric patients with acute gastroenteritis. In this study we examined the association between
rotavirus antigenemia and clinical features, and sought to determine the genotypes of rotaviruses detected in
paired stool and serum samples.
Methods: Paired stool and serum samples were obtained from children hospitalised for acute gastroenteritis in Belém,
Brazil, between June 2012 and June 2015. The 20-point Vesikari scoring system was used to assess the disease severity
upon a retrospective medical record review. Stool and serum samples were primarily screened for the presence of
rotavirus antigen using a commercial ELISA assay. The rotavirus isolates from stool and serum samples were genotyped
by using the classical reverse-transcriptase polymerase chain reaction (RT-PCR) and/or through nucleotide sequencing
of VP4 and VP7 genes. Viral load was estimated using real-time RT-PCR.
Results: In total rotavirus antigen was detected in 109 (24.2%) stool samples from 451 children, whereas antigenemia
occurred in 38.5% (42/109) of these patients. We demonstrated that patients positive for rotavirus RNA in paired stool
and serum samples were more likely to have a higher frequency of vomiting episodes in a 24-h period (p = 0.0035).
Our findings also suggested that children not vaccinated against rotavirus are more likely to develop antigenemia, as
compared to those given at least one vaccine dose (p = 0.0151). G12P [8] and G2P [4] genotypes were predominant
throughout the study period, accounting for 52.3% (57/109) and 27.5% (30/109) of the typed isolates, respectively. Ten
stool-serum pairs could be typed for VP4 and VP7 genes. Seven of these pairs showed concordant results with G2P [4]
genotype being detected in stool and serum samples, whereas discrepancies between genotypes (G2P [4]/G2P[NT]
and G12P [8]/G2P[NT]) were seen in three pairs.
Conclusions: Rotavirus antigenemia and RNAemia occur in a significant number of children hospitalised for acute
gastroenteritis in Belém, Brazil, and may contribute to a greater disease severity, particularly translated into a greater
number of vomiting episodes. This study documented a high concordance of genotypes detected in a subgroup of
paired stool and serum sample