title: Protective effect of Chresta martii extract against indomethacin-induced gastric lesions in mice.
abstract: Chresta martii (Asteraceae) is a plant found in the Xingó region (semi-arid area) in Northeastearn Brazil, and is recognized by the local population as a traditional herb used to treat gastric diseases. This is the first report of the chemical composition, acute toxicity, and gastroprotective effect in mice of the hydroalcoholic extract (HAE) from the aerial parts (leaves and flowers) of Chresta martii. Animals received HAE doses from 10 to 2000 mg/kg, i.p. or 50 to 3000 mg/kg, p.o.) and were observed over 48 h for toxicity signs and mortality; sub-chronic toxicity was evaluated through 14 days treatment with once-daily HAE doses (400 mg/kg, p.o.). The gastroprotective effect of HAE was demonstrated on the indomethacin-induced gastric ulcer model after the administration of extracts. Data comparison of ulcer index averages between saline and HAE (100 or 400 mg/kg, p.o.) groups showed significant (P < 0.01) inhibition (71.73 and 76.72 %, respectively) of indomethacin-induced gastric lesions. Histological analyses showed significant (P < 0.05) inhibition of leukocyte migration in HAE-treated groups. A fingerprint of the HAE obtained by HPLC/UV/MS analysis showed major peaks characteristic of sesquiterpene lactones. Compound 1 was isolated and elucidated as a new natural product. Its capacity to prevent leukocyte chemotaxis was demonstrated in vitro, corroborating the pharmacological effects observed for C. martii HAE.
authors.affiliation: Federal University of Ceará Brazil, Avenida Comandante Maurocélio Rocha Pontes, Sobral, Brazil. alfredodentista@gmail.com
authors.forename: A A R
authors.initials: AA
authors.lastname: Silva
authors.forename: M M
authors.initials: MM
authors.lastname: Bezerra
authors.forename: H V
authors.initials: HV
authors.lastname: Chaves
authors.forename: K M A
authors.initials: KM
authors.lastname: Pereira
authors.forename: J A
authors.initials: JA
authors.lastname: Aguiar
authors.forename: V P T
authors.initials: VP
authors.lastname: Pinto
authors.forename: C
authors.initials: C
authors.lastname: Abbet
authors.forename: C A
authors.initials: CA
authors.lastname: Simões-Pires
authors.forename: E S
authors.initials: ES
authors.lastname: Franco
authors.forename: A T
authors.initials: AT
authors.lastname: Henriques
authors.forename: K
authors.initials: K
authors.lastname: Hostettmann
authors.forename: M B S
authors.initials: MB
authors.lastname: Maia
mesh_terms: D000818:Animals; D000897:Anti-Ulcer Agents / Q000737:chemistry / Q000627:therapeutic use; D019659:Asteraceae / Q000737:chemistry*; D035264:Flowers / Q000737:chemistry; D007213:Indomethacin / Q000633:toxicity*; D008297:Male; D051379:Mice; D010936:Plant Extracts / Q000737:chemistry / Q000627:therapeutic use*; D018515:Plant Leaves / Q000737:chemistry; D013272:Stomach Diseases / Q000188:drug therapy; D013276:Stomach Ulcer / Q000139:chemically induced* / Q000188:drug therapy*
chemical_list: D000897:Anti-Ulcer Agents; D010936:Plant Extracts; D007213:Indomethacin