Antioxidant intake among Brazilian adults - The Brazilian Osteoporosis Study (BRAZOS): a cross-sectional study

<p>Abstract</p> <p>Background</p> <p>Antioxidant nutrient intake and the lesser formation of free radicals seem to contribute to chronic diseases. The aim of the present study was to evaluate the intake profile of the main dietary antioxidants in a representative sample of the adult Brazilian population and discuss the main consequences of a low intake of these micronutrients on overall health.</p> <p>Methods</p> <p>The sample comprised 2344 individuals aged 40 years or older from 150 cities and was based on a probabilistic sample from official data. The research was conducted through in-home interviews administered by a team trained for this purpose. Dietary intake information was obtained through 24-h recall. The Nutrition Data System for Research software program was used to analyze data on the intake of vitamins A, C and E, selenium and zinc, which was compared to Dietary Reference Intakes (DRIs). Differences in intake according to sex, anthropometrics, socioeconomic status and region were also evaluated. The SPSS statistical package (version 13) was used for the statistical analysis. P-values < 0.05 were considered significant.</p> <p>Results</p> <p>Higher proportions of low intake in relation to recommended values were found for vitamin E (99.7%), vitamin A (92.4%) and vitamin C (85.1%) in both genders. Intake variations were found between different regions, which may reflect cultural habits.</p> <p>Conclusion</p> <p>These results should lead to the development of public health policies that encourage educational strategies for improving the intake of micronutrients, which are essential to overall health and prevention of non-communicable diseases.</p

Perfil de recém-nascidos submetidos à cirurgia cardíaca em hospital privado do Município de São Paulo Perfil de los recién nacidos sometidos a cirugía cardiaca en un Hospital privado del municipio de Sao Paulo Profile of newborns who underwent cardiac surgery in a private hospital in the city of São Paulo

Estudo transversal cujo objetivo foi descrever o perfil dos recém-nascidos submetidos à cirurgia cardíaca em um hospital privado, referência em cirurgia cardíaca neonatal, no município de São Paulo. Foram analisados prontuários de 30 pacientes internados entre julho de 2001 a dezembro de 2005. Foram incluídos neonatos com idade > 35 semanas, com anomalias cardíacas. Excluíram-se os neonatos com óbito no 1. pós-operatório (OP) e com outras malformações sistêmicas. A maioria dos RNs nasceu a termo, com peso > a 2.500g e submetidos à cirurgia na primeira semana de vida. Foram identificados 24 diferentes diagnósticos de cardiopatias e 14 diferentes intervenções cirúrgicas. No 1. PO, todos os neonatos estavam com dispositivos para monitorar os parâmetros vitais ou como via de acesso para tratamento e suporte de vida, mostrando não só a complexidade do tratamento, como a necessidade de planejamento e organização do serviço na implementação da assistência a estes pacientes.<br>El objetivo en este estudio transversal fue caracterizar a los recién nacidos sometidos a cirugía cardiaca en un hospital privado del municipio de Sao Paulo. Los dados fueron obtenidos de las historias clínicas de los recién nacidos sometidos a cirugía entre julio de 2001 y diciembre del 2005. Los recién nacidos con 35 semanas o más de gestación fueron incluidos y excluidos los recién nacidos con óbito en el 1er dia de post-operatorio (PO) y con otras malformaciones sistémicas. La mayoría de los RNs nació a término, con peso a 2.500g e sometidos a la cirugía en la primera semana de vida. Fueron identificados 24 diferentes diagnósticos de cardiopatías y 14 diferentes intervenciones quirúrgicas. En el 1er dia de PO, todos los neonatos estaban con dispositivos para monitorear los parámetros vitales o como vía de acceso para el tratamiento y soporte de vida, mostrando no sólo la complejidad del tratamiento, sino también la necesidad de planificación y organización del servicio en la implementación de la asistencia a estos pacientes.<br>The aim of this cross-sectional study was to characterize newborns that underwent cardiac surgery in a private hospital, a reference center in neonatal cardiac surgery, in the city of São Paulo. Data were collected from medical reports from July, 2001 to December, 2005. Newborns with gestational age of more than 35 weeks were included in the study. Newborns that died on the first 48 postoperative hours and with other malformations were excluded. Most of the neonates were term, weighted 2,500 grams or more, and underwent surgery in the first week of life. There were 24 different diagnoses identified and 14 different types of surgery performed. In the first post-operative day, all newborns had invasive devices for vital signs monitoring or for treatment and life support, which shows not only the complexity of the treatment but the need for planning and organizing health services in order to provide adequate care for these patients

Potential impacts of climate change on biogeochemical functioning of Cerrado ecosystems

The Cerrado Domain comprises one of the most diverse savannas in the world and is undergoing a rapid loss of habitats due to changes in fire regimes and intense conversion of native areas to agriculture. We reviewed data on the biogeochemical functioning of Cerrado ecosystems and evaluated the potential impacts of regional climate changes. Variation in temperature extremes and in total amount of rainfall and altitude throughout the Cerrado determines marked differences in the composition of species. Cerrado ecosystems are controlled by interactions between water and nutrient availability. In general, nutrient cycles (N, P and base cations) are very conservative, while litter, microbial and plant biomass are important stocks. In terms of C cycling, root systems and especially the soil organic matter are the most important stocks. Typical cerrado ecosystems function as C sinks on an annual basis, although they work as source of C to the atmosphere close to the end of the dry season. Fire is an important factor altering stocks and fluxes of C and nutrients. Predicted changes in temperature, amount and distribution of precipitation vary according to Cerrado sub-regions with more marked changes in the northeastern part of the domain. Higher temperatures, decreases in rainfall with increase in length of the dry season could shift net ecosystem exchanges from C sink to source of C and might intensify burning, reducing nutrient stocks. Interactions between the heterogeneity in the composition and abundance of biological communities throughout the Cerrado Domain and current and future changes in land use make it difficult to project the impacts of future climate scenarios at different temporal and spatial scales and new modeling approaches are needed