title: Gastroprotective activity of hydroalcoholic extract obtained from the leaves of Brassica oleracea var. acephala DC in different animal models.
abstract: BACKGROUND
  Brassica oleracea var. acephala DC has been extensively used in Brazilian traditional medicine to treat gastric ulcer.
  
  
  OBJECTIVE
  This study was conducted to evaluate the antiulcerogenic property of hydroalcoholic extract obtained from the leaves of Brassica oleracea.
  
  
  METHODS
  Antiulcer assays were performed using the protocol of ulcer induced by ethanol/HCl, and non-steroidal anti-inflammatory drugs (NSAIDs). Parameters of gastric secretion (volume, pH and [H(+)]) were determined by the pylorus ligation model and mucus in gastric contents.
  
  
  RESULTS
  In the ethanol-induced ulcer model, we observed a significant reduction in all the parameters analyzed, obtaining curative ratios of 58.8 ± 11.5, 86.2 ± 12.2 and 42.8 ± 6.6% for the groups treated with 50 and 100mg/kg of extract and omeprazole (30 mg/kg), respectively. The dose of 25mg/kg of hydroalcoholic extract of Brassica oleracea showed no significant results. In the indomethacin-induced ulcer, the percentages of ulcer inhibition were 64.3 ± 9.9, 66.4 ± 12.3 and 81.2 ± 7.5% for the groups treated with 50 and 100mg/kg extract and positive control (cimetidine, 100mg/kg), respectively. The results showed a significant increase in pH and mucus production in the groups treated with Brassica oleracea when compared with the control group. No sign of toxicity was observed in the acute toxicity study.
  
  
  CONCLUSIONS
  The results of the present study show that hydroalcoholic extract of Brassica oleracea displays antiulcer activity, as demonstrated by the significant inhibition of ulcer formation induced using different models. The data suggest that the effectiveness of the extract is based on its ability to stimulate the synthesis of mucus, increase pH and decrease H(+) ions in the stomach. This work corroborates the ethnopharmacology use of Brassica oleracea preparations, contributing to its pharmacological validation by suggesting that preparations obtained from Brassica oleracea could be used for the development of new phytopharmaceuticals for the treatment of gastric ulcer.
authors: Programa de Mestrado em Ciências Farmacêuticas, Núcleo de Investigações Químico-Farmacêuticas (NIQFAR), Rua Uruguai, 458, Universidade do Vale do Itajaí - UNIVALI, Itajaí, Santa Catarina, Brazil.
authors: Marivane
authors: M
authors: Lemos
authors: José Roberto
authors: JR
authors: Santin
authors: Luiz Carlos Klein
authors: LC
authors: Júnior
authors: Rivaldo
authors: R
authors: Niero
authors: Sérgio Faloni de
authors: SF
authors: Andrade
mesh_terms: D000818:Animals; D001937:Brassica / Q000737:chemistry*; D000431:Ethanol / Q000737:chemistry; D005260:Female; D023421:Models, Animal; D010936:Plant Extracts / Q000494:pharmacology*; D018515:Plant Leaves / Q000737:chemistry*; D051381:Rats; D017208:Rats, Wistar; D013276:Stomach Ulcer / Q000517:prevention & control*
chemical_list: D010936:Plant Extracts; D000431:Ethanol