title: The zoapatle. VII. Antiimplantation effect in the rat of zoapatle aqueous crude extract (ZACE) from Montanoa tomentosa and Montanoa frutescens.
abstract: Intrauterine administration of zoapatle aqueous crude extract (ZACE) from Montanoa frutescens on the fourth day of rat pregnancy, at concentrations equivalent to 50 mg and 5 mg of dry leaves, was associated with total inhibition of implantation sites. On the other hand, ZACE from Montanoa tomentosa equivalent to 50 and/or 100 mg of dry leaves, prepared and administered in the same fashion, did not inhibit the number of implants by day 11 of pregnancy. However, most implants were found abnormal, of blue color, poor orientation or spacing; these morphological changes could be considered as reabsorption sites.
mesh_terms: D000818:Animals; D005591:Chemical Fractionation / Q000379:methods; D010064:Embryo Implantation / Q000187:drug effects*; D020964:Embryo Loss / Q000139:chemically induced; D005260:Female; D035924:Montanoa; D010082:Oxepins / Q000008:administration & dosage / Q000302:isolation & purification / Q000494:pharmacology*; D010936:Plant Extracts / Q000008:administration & dosage / Q000302:isolation & purification / Q000494:pharmacology*; D010946:Plants, Medicinal / Q000032:analysis; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000187:drug effects*; D051381:Rats; D011919:Rats, Inbred Strains; D013045:Species Specificity; D013696:Temperature
chemical_list: D010082:Oxepins; D010936:Plant Extracts