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BACKGROUND: Previous studies have demonstrated the occurrence of apoptosis in cardiomyocytes in different types of cardiovascular diseases. This report provides the first evidence for the presence of vascular apoptosis in myocardial infarction induced in rats by occluding the coronary artery for 7 weeks. METHODS AND RESULTS: Apoptosis was characterized by(More)
We propose an alternative to the Bak-Sneppen model for species survival. In our model the number of species is random. Births and deaths occur with constant probabilities and it is only the species with lowest fitness which is removed. We show that there is a sharp phase transition when the birth probability is larger than the death probability. The set of(More)
Spatial distribution of arboviral mosquito vectors (Diptera, Culicidae) in Vale do Ribeira in the Southeastern Brazilian Atlantic Forest Distribuição espacial de mosquitos (Diptera, Culicidae) vetores de arbovírus no Vale do Ribeira, sudeste da Abstract Mosquitoes are vectors of arboviruses that can cause encephalitis and hemorrhagic fevers in humans. Aedes(More)
This study aimed to characterize the elderly who naps according to sociode-mographic characteristics and frailty. A descriptive, cross-sectional study part of the multicenter project Frailty in the Elderly Brazilians. We evaluated 1,866 elderly people using a sociodemographic questionnaire. The frailty was assessed using the phenotype proposed by Fried. The(More)
RESUMO As infeções do trato urinário associadas à cateterização são muito frequentes no contexto comunitário e hospitalar. Existem atualmente várias recomendações para sua prevenção, contudo, quando aborda-do o soluto a utilizar no meato urinário previamente à algaliação continuam a persistir dúvidas. Assim, este estudo pro-curou determinar a eficácia da(More)
to those of a simple shear fault propagating along the seismogenic zone. The rise time at both stations is close to 20 s, so that we can approximate the width of the fault as twice (because of upward and downward propagation) the product of this time multiplied by the rupture speed. We obtain a fault width of ~120 km, which is in agreement with our static(More)
RESUMO O objeto deste estudo é a incorporação em revisões sistemáticas de resultados de pesquisas desenvolvidas na vertente marxista de produção do conhecimento, como evidências em saúde. Os objetivos são: rever os pressupostos do mate-rialismo histórico e dialético (MHD) e discutir as implicações da dialética para a revisão da literatura e síntese de(More)