Abstract

BUITRAGO R., Diana M.; RAMOS R., Gloria; RINCON V., Javier  and  GUERRERO P., Mario F.. ANTIAGGREGANT ACTIVITY OF THE ETHANOLIC EXTRACTS OF Solanum tuberosum IN HUMAN PLATELETS. Vitae [online]. 2007, vol.14, n.1, pp.49-54. ISSN 0121-4004.

The plant Solanum tuberosum is used in Colombian folk medicine for the treatment of hypertension. We evaluated the antiaggregant properties on human platelets of an ethanolic extract (96%) obtained from the skin of tubers of this species. Extracts from two varieties, sabanera and pastusa revealed in vitro dose-dependent (10-100 mg/mL) antiaggregant effects on platelets stimulated with adenosindiphosphate (ADP 10 µM), epinephrine (300 µM), collagen (10 µg/mL), and arachidonic acid (150 µg/mL). The IC₅₀ values for the sabanera and pastusa varieties were, respectively, 1,8 µg/mL and 0,4 mg/mL, against ADP; 4,4 µg/mL and 0,1 mg/mL against epinephrine; 34,1 µg/mL and 1,3 mg/mL against collagen, and 12,3 µg/mL and < 0,1 µg/mL, against arachidonic acid, a key precursor in prostaglandin synthesis. Our findings suggest that S. tuberosum has a promising pharmacological profile since it combines the hypotensive effects, previously described, with the antiaggregant ones; therefore, it is potentially useful for the treatment of cardiovascular disorders such as hypertension and coronary artery disease.

Keywords : Solanum tuberosum; arachidonic acid; antiaggregant; coronary disease.

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