title: Hypoglycemic effect and chlorogenic acid content in two Cecropia species.
abstract: The hypoglycemic effect of methanol leaf extracts from Cecropia obtusifolia and C. peltata was evaluated in healthy mice. A significant decrease (p < 0.05) in plasma glucose levels was recorded 2 and 4 h after a single oral administration of methanol extracts (1 g/kg). This effect was correlated with the chlorogenic acid contents in both species; C. peltata, containing 19.84 +/- 1.64 mg of chlorogenic acid/g of dried leaves produced the highest decrease (D(alpha 2,60) = 20.18, p < 0.05) of plasma glucose levels (52.8%). The extracts of C. obtusifolia from Tabasco and Veracruz, showed similar hypoglycemic effects (33.3% and 35.7%, respectively) and chlorogenic acid contents (Tukey(0.05) = 1.8859) (13.3 +/- 3.2 mg/g and 13.1 +/- 1.6 mg/g, respectively). The hypoglycemic effect produced by different doses (0.1, 0.25, 0.50, 0.75 and 1 g/kg body wt, p.o.) of C. peltata showed a lineal relationship with chlorogenic acid content, reaching an ED(50) = 0.540 g/kg body wt for extract, and an ED(50) = 10.8 mg/kg body wt for chlorogenic acid. These results suggest that C. peltata is a better hypoglycemic agent than C. obtusifolia, and it could be considered for developing a phytomedicinal product to carry out clinical trials.
authors.affiliation: Centro de Investigación Biomédica del Sur, Instituto Mexicano del Seguro Social, Argentina 1 Colonia Centro, 62790 Xochitepec Morelos, México. pisaliva@yahoo.com.mx
authors.forename: Pilar
authors.initials: P
authors.lastname: Nicasio
authors.forename: Lucía
authors.initials: L
authors.lastname: Aguilar-Santamaría
authors.forename: Eduardo
authors.initials: E
authors.lastname: Aranda
authors.forename: Sharon
authors.initials: S
authors.lastname: Ortiz
authors.forename: Manasés
authors.initials: M
authors.lastname: González
mesh_terms: D000818:Animals; D001786:Blood Glucose / Q000187:drug effects; D035702:Cecropia Plant / Q000737:chemistry*; D002726:Chlorogenic Acid / Q000031:analogs & derivatives* / Q000032:analysis / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D007004:Hypoglycemic Agents / Q000737:chemistry* / Q000494:pharmacology*; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D015394:Molecular Structure; D008517:Phytotherapy; D010936:Plant Extracts / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry
chemical_list: D001786:Blood Glucose; D007004:Hypoglycemic Agents; D010936:Plant Extracts; D002726:Chlorogenic Acid