Antifungal and marker effects of Talisia esculenta lectin on Microsporum canis in vitro

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Aims: The purpose of this study was to demonstrate the usefulness of lectin obtained from Talisia esculenta (TEL) seeds as a tool to recognize and study Microsporum canis. For this purpose, we investigated the antifungal and marker action of this lectin and the relationship of these effects with the presence of carbohydrates on the structure of this fungus. Methods and Results: The in vitro antifungal activity of TEL was analysed by broth microdilution assay. In addition, TEL was assessed against the arthroconidia present on hairs obtained from infected dogs and cats. The affinity of fluorescein isothiocyanate (FITC)-labelled TEL for macroconidia and arthroconidia of M. canis was also tested. The effects of TEL on the growth of the M. canis strains began with 0 center dot 125 mg ml-1, and 100% inhibition was obtained with a concentration of 2 mg ml-1. The addition of carbohydrates, especially N-acetyl-glucosamine and d-mannose, inhibited these antifungal effects. TEL was able to inhibit the growth of arthroconidial chitin-rich forms of M. canis obtained from hairs of infected animals and strains cultured in Sabouraud agar. FITC-labelled TEL efficiently marked macroconidial and arthroconidial forms of M. canis, as shown by fluorescent microscopy. Conclusions: These results show that the inhibitory effects of TEL on M. canis growth may be related to the interaction of lectin with the carbohydrates present at the micro-organism's surface, mainly d-mannose and N-acetyl-glucosamine. Significance and Impact of the Study: Talisia esculenta can be used as an important tool in the biochemical study of M. canis or as a molecule to recognize this dermatophyte in infected tissue.107620632069Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)FUNCAP (Ceara State Research Support Foundation) [9836/06]Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)CNPq [475724/2006-2]FUNCAP (Ceara State Research Support Foundation) [9836/06

O conhecimento de enfermeiros e médicos que trabalham na Estratégia de Saúde da Família acerca da tuberculose no município de Vitória (ES): um estudo de corte transversal Knowledge about tuberculosis by doctors and nurses, who work in the Family Health Strategy in the city of Vitória, Espírito Santo State: a cross-sectional study

O Brasil está no 14º lugar entre os 23 países responsáveis por 80% dos casos da doença no mundo. Buscando compreender a manutenção desses índices, estruturou-se este estudo, com o objetivo de identificar se o conhecimento, sobre a tuberculose, de médicos e enfermeiros que trabalham na Estratégia de Saúde da Família no município de Vitória (ES), seria um fator relevante na mediação dos processos de prevenção, diagnóstico e tratamento da tuberculose. É um estudo de corte transversal, tendo como amostra 50 profissionais. Os dados coletados foram analisados utilizando-se o teste qui-quadrado exato de Fischer com o nível de significância de 0.05. Em relação à transmissão e ao diagnóstico da tuberculose, não houve diferença estatisticamente significativa entre médicos e enfermeiros. Apenas uma variável apresentou diferença estatística: 41% dos médicos e 15% dos enfermeiros (p<0,05) disseram que o paciente deve ser assistido em um local de escolha do médico ou enfermeiro, e ainda 4% do total da amostra responderam que a supervisão não pode ser feita por um membro da família. A pesquisa comprova que médicos e enfermeiros possuem conhecimento para reduzir os índices da tuberculose, embora sejam indispensáveis o contínuo estudo e capacitação desses profissionais.<br>Brazil is in 14th among the 23 countries responsible for 80% of the tuberculosis (TB) cases in the world. Aiming to understand the maintenance of these indexes, this study was developed to identify if the knowledge about tuberculosis by doctors and nurses, who work in the Family Health Strategy in the city of Vitória (ES), would be a factor in the mediation of the prevention processes, diagnosis and treatment of the Tuberculosis. This is a cross-sectional study, with a sample size of 50 professionals. The collected data had been analyzed using the Chi-square and Fisher Exact tests with significance level of 0.05. Regarding the transmission and diagnosis of the Tuberculosis, there was no statistically significant difference between doctors and nurses. Only one variable presented a statistical difference: 41% of doctors and 15% of the nurses (p<0,05) mentioned that the patient must be attended in a place of choice of the doctor or nurse, and still, 4% of the total of the sample had answered that the supervision cannot be made by a member of the family. The research proves that doctors and nurses has knowledge to reduce the indexes of Tuberculosis, even so is indispensable the continuous study and qualification of these professionals