Resumo

DUMENIGO GONZALEZ, Abel et al. Anti-inflammatory and analgesic activity of an organic extract from the red alga Galaxaura rugosa (J. Ellis & Solander) J.V. Lamouroux. Rev Cubana Plant Med [online]. 2014, vol.19, n.3, pp.235-247. ISSN 1028-4796.

Introduction: the red alga Galaxaura rugosa (J. Ellis & Solander) J.V. Lamouroux (Galaxauraceae) is one of the most abundant species on the rocky platform of the Cuban coral reef. However, little is known about its pharmacological properties. Objectives: evaluate the anti-inflammatory and analgesic activity of a dichloromethane extract from the red alga G. rugosa and determine the phytochemical composition of the species. Methods: the algae were collected from the northern coast of Havana. Phytochemical characterization of the alga was performed using Chabra's method. The extract was obtained with a Soxhlet device with dichloromethane at 40 ºC. Topical anti-inflammatory activity was studied with the croton oil ear edema test model in male OF-1 mice at doses of 10*10^-3, 0.125, 0.25, 0.5, 1 and 2 mg/ear. The analgesic activity of the extract was evaluated on a model of writhing induced by 0.8 % acetic acid administered intraperitoneally (i.p.) at doses of 3, 6, 12.5, 25 and 100 mg/kg. Results: phytochemical analysis of G. rugosa revealed the presence of fatty, lactonic, triterpenic and/or steroidal compounds, as well as carbohydrates. The dichloromethane extract of G. rugosa at the dose of 0.125 mg/ear displayed a potent anti-inflammatory activity (above 40 %). The extract reduced writhing by more than 75 % with a dose of 6 mg/kg. Conclusions: results show that dichloromethane extract of the red alga G. rugosa is composed of a mixture of compounds capable of inhibiting the acute inflammatory response and the pain induced by chemical agents with a high pharmacological efficacy.

Palavras-chave : Galaxaura rugosa; anti-inflammatory; analgesic; dichloromethane extract; phytochemical composition.

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