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Search Results: 1 - 10 of 35531 matches for " Vanessa Alves; Magalh?es "
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Obesidade e pobreza: o aparente paradoxo. Um estudo com mulheres da Favela da Rocinha, Rio de Janeiro, Brasil
Ferreira, Vanessa Alves;Magalhes, Rosana;
Cadernos de Saúde Pública , 2005, DOI: 10.1590/S0102-311X2005000600027
Abstract: in recent decades the brazilian population has undergone intense changes in its nutritional conditions, especially with an increase in obesity. according to the national survey on health and nutrition in 1989, 32.0% of adults were overweight. however, distribution of the problem is not homogeneous. the highest prevalence occurs among poor women in the southeast. understanding this apparent paradox requires the search for approaches capable of overcoming simplistic interpretations about eating practices. thus, the objective of this study was to understand obesity combined with poverty, focusing beyond economic determinants on constraints of a cultural and symbolic nature. from this perspective, the study analyzed the daily lives of poor women who used a municipal health center and resided in the rocinha slum in rio de janeiro. the results showed the complexity of the relationship between obesity and poverty. cultural and material life aspects as well as different concepts of eating and the body proved to be fundamental elements for the analysis of the multiple facets of obesity in brazil.
Práticas alimentares cotidianas de mulheres obesas moradoras da Favela da Rocinha (Rio de Janeiro, RJ, Brasil)
Ferreira,Vanessa Alves; Magalhes,Rosana;
Ciência & Saúde Coletiva , 2011, DOI: 10.1590/S1413-81232011000600036
Abstract: this article presents conclusions of research conducted at ensp/fiocruz, as part of a master's degree course. one of the objectives of the research to investigate the eating habits of women living in the rocinha shantytown (rio de janeiro, rj, brazil) from a socio-anthropological perspective. the results revealed that the eating habits of the group were repetitive, with few variations in the menu consisting basically of rice, bean, sugars and fats. we further observed the rejection of industrialized and canned products. this food consumption pattern seems to conform to brazilian food culture revealing the preservation of the national identity based on feeding habits. consequently, it is necessary to set aside presuppositions regarding the relationship between food consumption and obesity, especially with respect to the predominant idea of changes in diet with the incorporation of a "modern" or "western" diet that prevail in studies in the field of nutrition in brazil. in this sense, we signaled the need to reassert a multidimensional approach for studies about food and nutrition in the country. this proposal involves overcoming restricted conceptual outlooks and the creation of new avenues of investigation.
O corpo cúmplice da vida: considera??es a partir dos depoimentos de mulheres obesas de uma favela carioca
Ferreira,Vanessa Alves; Magalhes,Rosana;
Ciência & Saúde Coletiva , 2006, DOI: 10.1590/S1413-81232006000200025
Abstract: the current article presents conclusions of a developed research in ensp/fiocruz, as part of a master degree course, about the relation between poverty and obesity from the symbolic structure seizure around the body. the research had as a goal examining the perception about the body of a fat women group living in a carioca slum, from the use of the qualitative methodology, using the technique of the semi-structured interview. the final researches in this work showed that among the rocinha women was in force proper standards of body that tied little esthetic attributes. the examined women noticed the obesity in a different way. it was felt through clinical symptoms as for example: "leg pains", "back pains", "lack of breath", "less disposition". it was still possible to observe that the fat body was sometimes valorous among the group, tied to work and the social condition. these results lead us to believe that the obesity assume proper outlines in the different contexts and social groups. for this reason we believe to be necessary the fulfillment of new research dates about the obesity theme in brazil.
Obesidade entre os pobres no Brasil: a vulnerabilidade feminina
Ferreira,Vanessa Alves; Magalhes,Rosana;
Ciência & Saúde Coletiva , 2011, DOI: 10.1590/S1413-81232011000400027
Abstract: the increase in obesity among women in the lower income bracket in brazil has been singled out as a priority issue in the field of public health today. concern about future repercussions of obesity in the less privileged groups calls for an in-depth theoretical approach and the energetic definition of public policy for prevention and control of the affliction in these segments. in this respect, the scope of this work is to attempt to pinpoint some analytical categories in the phenomenon of obesity among the underprivileged female population in brazil. biological, socioeconomic and cultural factors appear to interact in the dynamics of female obesity in the context of poverty revealing the complexity of this problem. public policies of job creation, social inclusion and gender equality in the labor market would appear to be more promising ways of tackling obesity in underprivileged females in brazil.
Chromosomal and morphological studies of diploid and polyploid cytotypes of Stevia rebaudiana (Bertoni) Bertoni (Eupatorieae, Asteraceae)
Oliveira, Vanessa M. de;Forni-Martins, Eliana R.;Magalhes, Pedro M.;Alves, Marcos N.;
Genetics and Molecular Biology , 2004, DOI: 10.1590/S1415-47572004000200015
Abstract: in this study, we examined the chromosome number and some morphological features of strains of stevia rebaudiana. the chromosomes were analyzed during mitosis and diakinesis, and the tetrad normality and pollen viability were also assessed. in addition, stomata and pollen were measured and some plant features were studied morphometrically. all of the strains had 2n = 22, except for two, which had 2n = 33 and 2n = 44. pairing at diakinesis was n = 11ii for all of the diploid strains, whereas the triploid and tetraploid strains had n = 11iii and n = 11iv, respectively. triploid and tetraploid plants had a lower tetrad normality rate than the diploids. all of the strains had inviable pollen. thus, the higher the ploidy number, the greater the size of the pollen and the stomata, and the lower their number per unit area. the triploid strain produced the shortest plants and the lowest number of inflorescences, whereas the tetraploid strain had the largest leaves. analysis of variance revealed highly significant differences among the strains, with a positive correlation between the level of ploidy and all of the morphological features examined.
Análise espacial dos acidentes de transito com vítimas fatais: compara??o entre o local de residência e de ocorrência do acidente no Rio de Janeiro
Souza, Vanessa dos Reis de;Cavenaghi, Suzana;Alves, José Eustáquio Diniz;Magalhes, M?nica de Avelar Figueiredo Mafra;
Revista Brasileira de Estudos de Popula??o , 2008, DOI: 10.1590/S0102-30982008000200010
Abstract: the purpose of this study is to compare the spatial distribution of deaths by traffic accidents in the city of rio de janeiro in 2003, based on three different types of addresses: the victims' residential addresses, address of accident, and that of death, by census track levels. the kernel estimation was utilized to estimate risk areas, in order to check for possible differences in the spatial patterns among different ways of classifying addresses. the results show that there are major differences in risk patterns according to address type. especially, it shows that it is essential to know the place of the accident for clearly pointing out risk areas. this enables authorities to take informed actions in public policies aimed at reducing and preventing traffic accidents. nonetheless, to enable such analyses in the future, administrative steps should be taken that will allow suitable information to be systematized and organized.
Desigualdade, pobreza e obesidade
Ferreira,Vanessa Alves; Silva,Aline Elizabeth; Rodrigues,Chrystiellen Ayana Aparecida; Nunes,Nádia Lúcia Almeida; Vigato,Tássia Cassimiro; Magalhes,Rosana;
Ciência & Saúde Coletiva , 2010, DOI: 10.1590/S1413-81232010000700053
Abstract: national studies have been demonstrating the positive relationship among inequality, poverty and obesity revealing the singularities and complexity of the nutritional transition in brazil. in this direction, the women constitute a vulnerable group to the dynamics of the obesity in the poverty context. such fact imposes the theoretical deepening and the accomplishment of researches that make possible a larger approach with the phenomenon in subject. in this perspective, the study analyzed the daily life of poor and obese women, users of basic units of health of the city of diamantina, vale do jequitinhonha, minas gerais state. the results revealed the complex relationship between feminine obesity and poverty. the cultural and material aspects of life, as well as the different feeding and body conceptions that demonstrated to be fundamental elements for the analysis of the multiple faces of the obesity among the investigated group. facing these results it is appropriate to encourage public policies that promote equity widening the access of those groups to the main resources for the prevention and combat of obesity.
Humoral immune response of patients bitten by the snake Bothrops erythromelas
Luna, Karla Patricia Oliveira;Xavier, Edeneide Maria;Pascoal, Vanessa Peruhype Magalhes;Martins-Filho, Olindo Assis;Pereira, Valéria Rêgo Alves;
Revista da Sociedade Brasileira de Medicina Tropical , 2010, DOI: 10.1590/S0037-86822010000600027
Abstract: introduction: snake envenomings are a health problem in rural areas of tropical and subtropical countries, but little is known regarding the immune response presented by bitten individuals. the igm production of patients bitten by bothrops erythromelas snake was analyzed to identify the effectiveness of treatment in this type of envenomation. methods: bothrops erythromelas venom was submitted to electrophoresis and transferred to a nitrocellulose sheet, following incubation with patients' sera. results: a 38 kda protein was detected before and 24 h after therapy. conclusions: the result suggests that this protein could be used as a marker for individuals envenomed by bothrops. erythromelas.
Group B Streptococcus Hijacks the Host Plasminogen System to Promote Brain Endothelial Cell Invasion
Vanessa Magalhes, Elva Bonifácio Andrade, Joana Alves, Adilia Ribeiro, Kwang Sik Kim, Margarida Lima, Patrick Trieu-Cuot, Paula Ferreira
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0063244
Abstract: Group B Streptococcus (GBS) is the leading cause of meningitis in neonates. We have previously shown that plasminogen, once recruited to the GBS cell surface and converted into plasmin by host-derived activators, leads to an enhancement of bacterial virulence. Here, we investigated whether plasmin(ogen) bound at the GBS surface contributes to blood-brain barrier penetration and invasion of the central nervous system. For that purpose, GBS strain NEM316 preincubated with or without plasminogen plus tissue type plasminogen activator was analyzed for the capacity to adhere to, invade and transmigrate the human brain microvascular endothelial cell (hBMEC) monolayer, and to penetrate the central nervous system using a neonatal mouse model. At earlier times of infection, plasmin(ogen)-treated GBS exhibited a significant increase in adherence to and invasion of hBMECs. Later, injury of hBMECs were observed with plasmin(ogen)-treated GBS that displayed a plasmin-like activity. The same results were obtained when hBMECs were incubated with whole human plasma and infected with untreated GBS. To confirm that the observed effects were due to the recruitment and activation of plasminogen on GBS surface, the bacteria were first incubated with epsilon-aminocaproic acid (εACA), an inhibitor of plasminogen binding, and thereafter with plasmin(ogen). A significant decrease in the hBMECs injury that was correlated with a decrease of the GBS surface proteolytic activity was observed. Furthermore, plasmin(ogen)-treated GBS infected more efficiently the brain of neonatal mice than the untreated bacteria, indicating that plasmin(ogen) bound to GBS surface may facilitate the traversal of the blood-brain barrier. A higher survival rate was observed in offspring born from εACA-treated mothers, compared to untreated mice, and no brain infection was detected in these neonates. Our findings suggest that capture of the host plasmin(ogen) by the GBS surface promotes the crossing of the blood-brain barrier and contributes to the establishment of meningitis.
Nutri??o e promo??o da saúde: perspectivas atuais
Ferreira, Vanessa A.;Magalhes, Rosana;
Cadernos de Saúde Pública , 2007, DOI: 10.1590/S0102-311X2007000700019
Abstract: in recent years, health promotion has been introduced as a promising strategy for the public health field. the current study is intended to link nutrition into the recent debate on health promotion, analyzing the role of nutritionists in this process. given the complexity of the brazilian nutritional situation due to the nutritional transition currently under way in the country, the health promotion proposal points to both new perspectives and challenges for eating and nutrition. new demands in academic training and the nutritional care model tend to foster a search for partnerships, innovation in eating practices, and nutritional education aimed at the achievement of nutritional citizenship.
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