The objective of this work was to evaluate the antiplasmodial activity and toxicity of the extract and fractions obtained from the bark of Aspidosperma nitidum. The ethanol extract obtained from the powdered bark of plants was acid-base partitioned and phytochemically analyzed. The antiplasmodial activity, in vivo antimalarial activity and in vitro cytotoxicity were acessed. The selectivity index (SI) was calculated. The acute oral toxicity and pathological effects, of the ethanol extract was evaluated in mice. The major constituent of the ethanol extract was suggestive of a β-carboline chromophore. The alkaloid and neutral fractions contained compounds with an aspidospermine core as the major constituent. The ethanol extract (IC50 = 3.60 µg/mL), neutral fraction (IC50 = 3.34 µg/mL) and alkaloid fraction (IC50= 2.32 µg/mL) showed high activity against P. falciparum (W2 strain). The ethanol extract and the alkaloid fraction reduced 80% of the parasitemia of P. berghei (ANKA)-infected mice (dose of 500 mg/kg) in the 5th day, which was not sustainable at the 8th day. A similar result was obtained for chloroquine. The ethanol extract (CC50 = 410.65 µg/mL; SI = 114.07), neutral fraction (CC50 = 452.53 µg/mL; SI = 135.49), and alkaloid fraction (CC50 =346.73 µg/mL; SI 149.45) demonstrated low cytotoxicity and high SI. The ethanol extract (5000 mg/kg; gavage) presented low acute oral toxicity, with no clinical or anatomopathological modifications being observed (in comparison to the control group). In vitro studies with a chloroquine-resistant clone of P. falciparum confirmed the antiplasmodial activity of the A. nitidum ethanol extract, and its fractions had low cytotoxicity for HepG2 cells. In vivo studies with P. berghei–infected mice and acute toxicity studies corroborated these results.
Objetivo: Verificar a relação entre nível de capacidade motora de crianças e adolescentes com ECNE e a percepção ambiental e psicossocial de pais e cuidadores. Métodos: Trata-se de um estudo transversal, observacional e quantitativo. A avaliação da percepção psicossocial dos pais e cuidadores realizou-se através do formulário do Índice de Estresse Parental e a avaliação motora das crianças e adolescentes com a escala GMFCS. A pesquisa aconteceu em um ambiente reservado no Centro de Reabilitação Neurológica e Infantil de Cacoal (Cernic), a amostra incluiu 14 participantes, sendo 6 mães e 1 pai, 4 crianças e 3 adolescentes. Resultados: 71% (5) dois pais apresentaram faixa percentual típica de estresse e 29% (2) demostram que possuem a faixa percentual de estresse clinicamente significativo. A hipótese inicial do estudo era de que, quanto maior o nível de incapacidade, maior era o nível de estresse parental. Contudo os resultados apontam um nível de significância com valor P: 0,149b. Esse resultado mostra que a hipótese verdadeira não foi comprovada Conclusão: Após quantificar o nível de controle motor nas crianças e adolescentes com ECNE, analisar a percepção ambiental e psicossocial dos pais e cuidadores, foi correlacionados os dados do formulário e os achados da escala GMFCS, o estudo expôs que houve uma discordância na maioria das respostas presentes no formulário por parte dos pais e cuidadores avaliados, levando a considerar que não possui uma correlação entre o nível de estresse parental com o nível da capacidade motora e funcional de seus filhos.
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