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The flavonoid kaempferol obtained from Helianthemum glomeratum, an endemic Mexican medicinal herb used to treat gastrointestinal disorders, has been shown to inhibit growth of Entamoeba histolytica trophozoites in vitro; however, the mechanisms associated with this activity have not been documented.
Mexican traditional medicine uses a great variety of plants in the treatment of gastrointestinal disorders such as diarrhea. In order to understand the properties of some of their chemical constituents, three flavonoids (kaempferol, tiliroside and (-)-epicatechin) isolated from Geranium mexicanum,
Structure characterization and biological evaluation of the compounds isolated from Helianthemum glomeratum, particularly that of the polyphenols, has been the aim of a series of studies carried out to define the further potential use of this plant in the treatment of infectious diarrhoea in
Bioassay-guided fractionation of the methanol extract of aerial parts from Helianthemum glomeratum afforded five antiprotozoal flavonol glycosides: tiliroside, kaempferol-3-O-(3'',6''di-O-E-p-coumaroyl)-betad-glucopyranoside, astragalin, quercitrin and isoquercitrin. The in vitro antiprotozoal assay