ABSTRACT
Abstract We investigated the vasodilatory effects of Hymenaea rubriflora Ducke stem bark extract (HR- HAc). Vascular reactivity of the aortic rings of Wistar rats was tested by in vitro cumulative doses (0.1 - 729 μg/mL). Rats (n=5) were treated with 25 (G25), 50 (G50) and 100 (G100) mg/ kg of HR-HAc or saline (control group - CG) for four weeks. An in vitro assay resulted in dose-dependent relaxation of the aortic rings with functional endothelium, which was inhibited in the presence of L-NAME. Rings of the treated animals increased acetylcholine relaxing potency at all doses, with a greater effect on G50 (pD2 = 7.8±0.1, Emax = 95.6±1.1) and a decreased contractile potency to phenylephrine in G25 (pD2 = 6.9±0.06, Emax = 61.5±6.0%) and G50 (pD2= 6.6±0.06, Emax = 71.0±8.5%) when compared to the CG in the presence and absence of endothelium (pD2= 6.4± 0.1, 6.4±0.1 and 6.9±0.1, respectively). Cumulative doses of nitroprusside resulted in increased relaxing potency in all treated groups and maintained Emax at 100%. It is concluded that HR-HAc has vasorelaxant capacity and inhibitory vascular contraction activity applied either directly to aortic rings or after treatment with in vivo supplementation, which places this extract as a potential nutraceutical or pharmacological agent for treating diseases associated with vascular dysfunction.
ABSTRACT
Resumo O crescente fluxo de imigração venezuelana provocou discussões acerca da inserção dessa comunidade no território brasileiro. Atualmente, o sistema de saúde roraimense tem o desafio de efetivar a universalização do acesso à saúde ao imigrante. Logo, este estudo objetiva conhecer as repercussões desse fenômeno sob a ótica de profissionais de saúde. Para isso, trata-se de um estudo qualitativo com abordagem exploratória que analisou a percepção dos técnicos de enfermagem do maior hospital de Roraima sobre os reflexos da imigração nos serviços de saúde e na qualidade da assistência. A análise das entrevistas semiestruturadas foi pautada na técnica de avaliação de conteúdo, sendo elencadas categorias. Por meio de análise da categoria de entraves na assistência de saúde, observaram-se problemas estruturais, como as fragilidades de infraestrutura e a carência de profissionais técnicos, resultando na sobrecarga de trabalho, e étnicos-culturais, como a barreira linguística, que representa um fator limitante para a realização de um atendimento de saúde com qualidade, além da maior fragilidade na condição de saúde dos imigrantes. Os achados deste trabalho podem auxiliar o estado de Roraima a refletir criticamente acerca do emprego correto dos investimentos na saúde, para garantir eficácia, dignidade e humanidade aos imigrantes, bem como aos brasileiros.
Abstract The growing flow of Venezuelan immigration has provoked discussions about the insertion of this community in Brazilian territory. Currently, the health system of Roraima has the challenge of effecting the universalization of access to the immigrant population. Therefore, this study aims to understand the repercussions of this phenomenon from the perspective of health professionals. As such, this is a qualitative study with an exploratory approach that analyzed the perception of nursing technicians of the largest hospital in Roraima about the effects of immigration on health services and quality of care. The analysis of semi-structured interviews was based on the content evaluation technique, and categories were listed. Through the categorical analysis of obstacles in health care, we observed structural problems, such as frailties in infrastructure and lack of technical professionals, resulting in work overload, as well as ethnocultural problems, such as the language barrier, which represents a limiting factor for performing quality health care, in addition to the greater frailty in the health condition of immigrants. The findings of this study may help the state of Roraima to reflect critically on the correct use of investments in health, to ensure efficacy, dignity and humanity to immigrants, as well as Brazilians.