ABSTRACT
The objective of this paper was to evaluate the antiulcer activity of a crude ethanol extract of Salvia officinalis L. in a gastric lesion induction model. Male Wistars rats were housed in groups of five and fasted 12 hours before the experiment, receiving only water ad libitum. The experimental groups received oral doses of 50, 75, 100 and 150 μg/kg of the extract and the negative and positive control groups received distilled water and omeprazol (30mg/kg), respectively. One hour after each respective oral dose, the ulcer was induced with absolute ethanol. a further hour after induction, the animals were euthanized by CO2 camera, the stomachs removed and opened along the greater curvature. Data was statistically analysed using analysis of variance (ANOVA) followed by the Tukey method (p<0.05). The groups treated with Salvia officinalis L. extract at doses of 100 and 150 μg/kg showed significant changes in the four parameters evaluated. By reducing the total lesion area, a significant increase in the cure ratio was observed, suggesting a gastroprotective effect of the extract. This data demonstrates the potential use of Salvia officinalis L. extract for effective treatment of injuries caused by absolute ethanol.
ABSTRACT
Oito amostras, provenientes do Brasil, Chile e Argentina, de Peumus boldus Molina (Monimiaceae), espécie comum e abundante no Chile, cujas folhas são amplamente empregadas pela medicina tradicional para o tratamento de uma variedade de afecções do sistema digestivo e hepatobiliar, foram analisadas, após digestão nítrica, para a quantificação de ferro, manganês, cobre, chumbo, cromo, cobalto e níquel, por espectrofotometria de absorção atômica. Chumbo, cromo e cobalto não foram detectados (limite de detecção de 5 µg/g) em nenhuma das amostras. Todas as amostras apresentaram maior teor em ferro, que variou de 109,7 mg/kg a 315,7 mg/kg, seguido por manganês (65,5 mg/kg a 158,8 mg/kg), cobre (3,04 mg/kg a 9,16 mg/kg) e níquel (0,77 mg/kg a 4,31 mg/kg).
Eight samples, obtained from Brazil, Chile and Argentina, of Peumus boldus Molina (Monimiaceae), an abundant and widespread native tree in Chile, which leaves are widely used in folk medicine for the treatment of digestive and hepatobiliary disorders, were analyzed, after nitric digestion, for the content of iron, manganese, copper, lead, chromium, cobalt and nickel, by atomic absorption spectrophotometry. Lead, chromium and cobalt were not detected (detection limit of 5 µg/g) in any sample. The samples showed a high level of iron, which ranged from 109.7 mg/kg to 315.7 mg/kg, followed by manganese (65.5 mg/kg to 158.8 mg/kg), copper (3.04 mg/kg to 9.16 mg/kg) and nickel (0.77 mg/kg to 4.31 mg/kg).