Avaliação da atividade citotóxica dos extratos etanólicos da casca e das folhas da Terminalia fagifolia Mart. sobre células normais e tumorais
DOI:
https://doi.org/10.12662/2317-3076jhbs.v5i1.1068.p16-23.2017Keywords:
Terminalia fagifolia, Citotoxicidade, MTS, Viabilidade celularAbstract
Introdução: A procura por novas alternativas terapêuticas, como as que utilizam as plantas medicinais, tem despertado grande interesse da comunidade científica na busca por tratamentos mais eficientes para as doenças, incluindo o câncer. Terminalia fagifolia Mart. é uma planta medicinal encontrada no Cerrado brasileiro, usada popularmente no tratamento de aftas e tumores. Objetivos: Avaliar a atividade citotóxica dos extratos etanólicos da casca e das folhas da Terminalia fagifolia em linhagens celulares NIH 3T3 e L929 e tumorais PC3 e B16F10. Métodos: Foi realizada a metodologia de determinação da viabilidade celular em ensaio com monocamada de células utilizando o ensaio MTS. As linhagens NIH 3T3, L929, PC3 e B16F10 foram expostas por 24 horas a diferentes concentrações dos extratos etanólicos da casca e folhas da Terminalia fagifolia. Resultados: Os resultados adquiridos mostraram que os extratos apresentaram viabilidade celular, sendo considerada de moderada a alta, para as células normais NIH 3T3 e L929 e citotoxicidade severa para as células tumorais PC3 e B16F10. Dessa forma, torna-se necessária a continuidade dos estudos com essa planta, pois os extratos da casca e das folhas apresentaram atividades antitumorais muito promissoras. Conclusões: Os extratos da casca e das folhas demonstraram viabilidade celular ≥ 50% nas linhagens celulares normais NIH 3T3 e L929 e demonstraram atividade citotóxica para as linhagens tumorais PC3 e B16F10, apresentando redução da viabilidade celular em torno de 60% e 70%, respectivamente.
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