title: Antiprotozoal and Antimycobacterial Activities of Pure Compounds from Aristolochia elegans Rhizomes.
abstract: We analyzed the antimycobacterial activity of the hexane extract of rhizomes from Aristolochia elegans. Some compounds of this extract were purified and tested against a group of drug-resistant Mycobacterium tuberculosis strains. We also evaluated their antiprotozoal activities. The hexane extract was active against M. tuberculosis H37Rv at a MIC = 100 μg mL(-1); the pure compounds eupomatenoid-1, fargesin, and (8R,8'R,9R)-cubebin were active against M. tuberculosis H37Rv (MIC = 50 μg mL(-1)), while fargesin presented activity against three monoresistant strains of M. tuberculosis H37Rv and a MDR clinical isolate of M. tuberculosis (MIC < 50 μg mL(-1)). Both the extract and eupomatenoid-1 were very active against E. histolytica and G. lamblia (IC(50) < 0.624 μg mL(-1)); in contrast, fargesin and (8R,8'R,9R)-cubebin were moderately active (IC(50) < 275 μg mL(-1)). In this context, two compounds responsible for the antimycobacterial presented by A. elegans are fargesin and cubebin, although others may exert this activity also. In addition to the antimycobacterial activity, the hexane extract has important activity against E. histolytica and G. lamblia, and eupomatenoid-1 is one of the compounds responsible for the antiparasite activity.
authors.affiliation: Unidad de Investigación Médica en Farmacología de Productos Naturales (UIMFPN), UMAE Hospital de Pediatría, Centro Médico Nacional Siglo XXI (CMN-SXXI), Instituto Mexicano del Seguro Social, (IMSS), 2° piso CORSE, 06720 México, DF, Mexico.
authors.forename: Adelina
authors.initials: A
authors.lastname: Jiménez-Arellanes
authors.forename: Rosalba
authors.initials: R
authors.lastname: León-Díaz
authors.forename: Mariana
authors.initials: M
authors.lastname: Meckes
authors.forename: Amparo
authors.initials: A
authors.lastname: Tapia
authors.forename: Gloria María
authors.initials: GM
authors.lastname: Molina-Salinas
authors.forename: Julieta
authors.initials: J
authors.lastname: Luna-Herrera
authors.forename: Lilián
authors.initials: L
authors.lastname: Yépez-Mulia