Anti-Trypanosoma cruzi activity of extracts from Argentinean Asteraceae species

Document Type: Research article

Authors

1 Cátedra de Farmacognosia, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina.

2 Instituto de Química y Metabolismo del Fármaco (IQUIMEFA) (UBA-CONICET), Buenos Aires, Argentina

3 Cátedra de Inmunología, Instituto de Estudios de la Inmunidad Humoral (IDEHU) (UBA-CONICET), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina.

4 Instituto de Microbiología y Parasitología Médica (IMPaM) (UBA-CONICET), Facultad de Medicina, Buenos Aires, Argentina

5 Centro de Referencia para Lactobacilos (CERELA) (CONICET), San Miguel de Tucumán, Argentina.

6 Instituto de Química y Metabolismo del Fármaco (IQUIMEFA) (UBA-CONICET), Buenos Aires, Argentina.

Abstract

The anti-Trypanosoma cruzi activity of extracts from 13 Argentinean Asteraceae species was determined. Dichloromethane and methanol extracts of Acmella bellidioides, Aspilia silphioides, Viguiera tuberosa, Calyptocarpus biaristatus, Hyalis argentea, Helenium radiatum, Gaillardia megapotamica, Verbesina subcordata, Gymnocoronis spilanthoides, Viguiera anchusaefolia, Thelesperma megapotamicum, Zexmenia buphtalmiflora and Vernonia plantaginoides were evaluated in vitro against Trypanosoma cruzi epimastigotes. A. silphioides, V. tuberosa, V. subcordata, G. spilanthoides, G. megapotamica, T. megapotamicum and Z. buphtalmiflora dichloromethane extracts showed trypanocidal activity with inhibitions higher than 60% at a concentration of 10 µg/mL. The methanol extracts of H. radiatum and G. megapotamica were the most active with inhibitions of 70.1 and 77.7%, respectively at 10 µg/mL. The chromatographic profiles of the most active extracts showed bands and major peaks that could be attributed to flavonoids and terpenoid compounds.

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