Resumo

MORAIS-BRAGA, Maria Flaviana B et al. Cytotoxic and antiparasitic activity of Lygodium venustum SW. Acta toxicol. argent. [online]. 2013, vol.21, n.1, pp.50-56. ISSN 1851-3743.

Infectious and parasitic diseases like leishmaniasis and Chagas disease have spreading recent decades to places not observed before. They are considered neglected by desolating poor countries and marginalized pharmacologically. There are not many options for the treatment and these drugs have shown signifcant toxicity contributing to the appearance of several side effects. Research on natural products has been shown to be an interesting alternative to the search for new drugs. Lygodium venustum is a cosmopolitan fern with latescence habit found on the Chapada do Araripe, considered by some American popula-tions as a medicinal plant for the treatment of skin diseases, infections, fungal infections and trichomoniasis. This study evaluated its antiparasitic activity against Trypanosoma cruzi and Leishmania brasiliensis, as well as its cytotoxicity through trials in vitro. We tested the ethanolic extract and hexane fraction obtained from the leaves of L. venustum at different concentrations. For in vitro tests of T. cruzi, we used the clone CL-B5 and for L. brasiliensis we used promastigotes. The cytotoxicity assay was performed with strains of fbroblasts. L.venustum showed no antiparasitic activity clinically relevant in the form of crude ethanolic extractor as the hexane fraction against Leishmania. The hexane fraction showed an intermediate activity against T.cruzi, but the concentration of moderate effect has maximum cytotoxicity becoming unfeasible for clinical application. However, the cytotoxicity presented may be useful in research on antineoplastic activity in tumor cells.

Palavras-chave : Fern; Leishmanicidal activity; Trypanocidal activity; Hexane fraction.

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