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Voltammetric and spectrometric determination of antioxidant capacity of selecte...

Considering the presence of phenolics in grapes and wines, as well as their importance for health promoting properties, the DPPH (1,1-diphenyl-2-picrylhidrazine) assay and a novel electroanalytical approach (differential pulse voltammetry – DPV) for analysis have been performed in order to compare the antioxidant activity of different grape beverages. A total of fifty-two wine samples from different regions aro...

Argamassas de cal aérea com resíduos de cerâmica. Influência da granulometria d...

PATORREB 2012 – 4º Encontro sobre Patologia e Reabilitação de Edifícios, Santiago de Compostela,12-14 Abril 2012 ; Um dos erros mais frequentes nos dias que correm é a aplicação de argamassas de substituição ou reparação na reabilitação de edifícios antigos que não são compatíveis com os materiais pré-existentes. Para além do resultado inestético, esta má aplicação tem como consequência a ocorrência de patolog...

Argamassas de cal aérea com resíduos de cerâmica

4º Congresso de Argamassas de Construção da APFAC. Coimbra, U.Coimbra, APFAC/ITeCons, 29-30 Março 2012 ; Com o intuito de explorar a viabilidade da integração de resíduos da indústria cerâmica em argamassas de cal aérea destinadas à reabilitação de rebocos antigos, foram caracterizadas argamassas com três tipos de resíduos na sua composição: provenientes de telhas, de tijolos e de vasos. A incorporação dos res...

Genome size and ploidy of Paracoccidioides brasiliensis reveals a haploid DNA c...

The aim of this study was to evaluate genome size and ploidy of the dimorphic pathogenic fungus Paracoccidioides brasiliensis. The cell cycle analysis of 10 P. brasiliensis isolates by flow cytometry (FCM) revealed a genome size ranging from 26.3+/-0.1Mb (26.9+/-0.1fg) to 35.5+/-0.2Mb (36.3+/-0.2fg) per uninucleated yeast cell. The DNA content of conidia from P. brasiliensis ATCC 60855-30.2+/-0.8Mb (30.9+/-0.8f...

Lipid peroxidation and total radical-trapping potential of the lungs of rats su...

Exposure to stress induces a cluster of physiological and behavioral changes in an effort to maintain the homeostasis of the organism. Long-term exposure to stress, however, has detrimental effects on several cell functions such as the impairment of antioxidant defenses leading to oxidative damage. Oxidative stress is a central feature of many diseases. The lungs are particularly susceptible to lesions by free ...

Evaluation of two 99mTc-DTPA radioaerosols with different characteristics in lu...

Two radioaerosol preparations, TechneScan®-DTPA (99mTc-DTPA, 40 mCi/3 ml; IPEN-CNEN, São Paulo, SP, Brazil) and TechneScan®-DTPA/AEROSOL (99mTc-DTPA/A, 15 mCi/1.5 ml with 0.5 ml ethanol; Mallinckrodt Medical, St. Louis, MO, USA), were compared in pulmonary ventilation studies in terms of total radiocounts and clearance after inhalation. An aerosol with ethanol is supposed to better distribute the radioparticles...

The identification of emotions in two different populations: anorectic and non ...

Effect of acute and repeated restraint stress on glucose oxidation to CO2 in hi...

It has been suggested that glucocorticoids released during stress might impair neuronal function by decreasing glucose uptake by hippocampal neurons. Previous work has demonstrated that glucose uptake is reduced in hippocampal and cerebral cortex slices 24 h after exposure to acute stress, while no effect was observed after repeated stress. Here, we report the effect of acute and repeated restraint stress on gl...

Effect of repeated stress on novelty-induced antinociception in rats

There is extensive evidence that acute stress induces an analgesic response in rats. On the other hand, repeatedly stressed animals may present the opposite effect, i.e., hyperalgesia. Furthermore, exposure to novelty is known to induce antinociception. The effects of repeated restraint stress on nociception after exposure to novelty, as measured by the tail-flick latency (TFL), were studied in adult male rats....