Antiulcer action of Microgramma squamulosa (Kaulf.) Sota.

J Ethnopharmacol

Faculdade de Ciências Farmacêuticas da Universidade de São Paulo, Departamento de Farmácia, SP, Brasil.

Published: June 1999

AI Article Synopsis

  • Microgramma squamulosa is a plant used in São Paulo as an antiulcer agent, and this study investigates its effectiveness and toxicity.
  • The research involved testing the plant's crude extract against ulcers induced by stress and harsh chemicals, comparing it to standard antiulcer medications like cimetidine and misoprostol.
  • Additionally, a subchronic toxicity test was conducted by giving a high dose of the extract for 30 days, while also analyzing the extracts for their chemical composition.

Article Abstract

Microgramma squamulosa (Kaulf.) Sota (Polypodiaceae) is commonly used as an antiulcer agent in the state of São Paulo, mainly in the upper land. The present work aims to study the antiulcer action of the crude extract of the plant rhizome and its toxicity. The effective dose was determined through acute ulcer induction test by stress. Using a determined dose, we performed a test against ulcer through acute induction by ethanol and hydrochloric acid, using cimetidine and misoprostol as reference drugs in both tests. The same extract, its ethanol and ethanol + water (1:1) fractions and the reference drug cimetidine were tested through subchronic induction test with acetic acid. The subchronic toxicity test was performed using a dose of 800 mg/kg of the crude extract, orally administered for 30 days. Finally the extracts and fractions were analysed in order to determine the main chemical groups of substances.

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http://dx.doi.org/10.1016/s0378-8741(98)00211-6DOI Listing

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