Resumen

SOTO VASQUEZ, Marilú Roxana. Antinociceptive and antibacterial activity of total alkaloids from two species of the Solanaceae family. Rev Cubana Plant Med [online]. 2014, vol.19, n.4, pp. 361-373. ISSN 1028-4796.

Introduction: Solanum multifidum Lam. and Lycianthes lycioides (L.) Hassl. are two species typical of coastal hills of Peru. Both belong to the Solanaceae family, and are renowned for their high content of alkaloids with a variety of therapeutic activities. That was the reason why the present study was conducted. Objective: evaluate the antinociceptive and antibacterial activity of total alkaloids from leaves of Solanum multifidum Lam. and Lycianthes lycioides (L.) Hassl. Methods: total alkaloids were extracted from dry leaves of the study species following the method described by Peña. Antinociceptive activity was evaluated in vivo using the writhing test, whereas in vitro antibacterial activity was evaluated with the agar diffusion technique with impregnated discs. Minimum inhibitory concentration was determined by the agar dilution method. Results: in both species total alkaloids showed antinociceptive activity at doses of 2.5 mg/kg, 5 mg/kg y 10 mg/kg, with the greatest inhibition percentage at 10 mg/kg and statistically significant differences (p<0.05). The alkaloids also inhibited the growth of Staphylococcus aureus (ATCC 25923), Escherichia coli (ATCC 25992) and Pseudomona aeruginosa (ATCC 27853) at concentrations of 2 mg/mL and 4 mg/mL, exhibiting greater bioactivity against Staphlylococus aureus. In general terms, total alkaloids Lycianthes lycioides (L.) Hassl. showed the greatest antinociceptive and antibacterial activity. Conclusions: it was demonstrated that total alkaloids from both species have antinociceptive and antibacterial activity. The present paper is the first report about bioactivity of these plant species, an attractive option for the development of new drugs.

Palabras clave : alkaloids; Solanum multifidum Lam; Lycianthes lycioides (L.) Hassl; antinociceptive; antibacterial.

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