The acetone soluble fraction from bark extract of Stryphnodendron adstringens (Mart.) coville inhibits gastric acid secretion and experimental gastric ulceration in rats.
The acetone soluble fraction from a crude methanol extract of Stryphnodendron adstringens stem bark (AFSAB) was evaluated in acute (ethanol, indomethacin and hypothermic restraint-stress) and chronic (acetic acid) models of gastric ulceration and on basal and bethanechol-stimulated gastric acid secretion in rats. Rats pretreated orally with AFSAB at doses of 400 and 800 mg/kg showed significant decreases of gastric lesion scores in ethanol (62% and 98%) and hypothermic restraint-stress (89% and 88%) models but exerted no significant influence on indomethacin-induced acute or acetic acid-induced chronic ulceration. In pylorus-ligated rats, AFSAB significantly decreased the basal as well as bethanechol-stimulated gastric secretory volume and the total acidity with an elevated pH value. AFSAB failed to modify the gastric mucus and the gastric wall nonprotein-sulphydryl content. These results point to a possible antisecretory effect of AFSAB which account for the observed antiulcer activity in ethanol and hypothermic restraint-stress induced models of acute gastric ulceration.
Departamento de Ciëncias Básicas em Saúde-FCM, Universidade Federal de Mato Grosso, 78060-900 Cuiabá - MT, Brazil. taba@zaz.com.br
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Martins
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JC
Lima
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Rao
D000096:Acetone; D000284:Administration, Oral; D000818:Animals; D000897:Anti-Ulcer Agents / Q000008:administration & dosage / Q000737:chemistry / Q000494:pharmacology / Q000627:therapeutic use*; D004195:Disease Models, Animal; D007887:Fabaceae / Q000737:chemistry*; D005744:Gastric Acid / Q000378:metabolism*; D007213:Indomethacin / Q000494:pharmacology; D008297:Male; D008517:Phytotherapy; D024301:Plant Bark / Q000737:chemistry*; D010936:Plant Extracts / Q000008:administration & dosage / Q000737:chemistry / Q000494:pharmacology* / Q000627:therapeutic use*; D010946:Plants, Medicinal / Q000737:chemistry; D051381:Rats; D012995:Solubility; D013276:Stomach Ulcer / Q000139:chemically induced / Q000150:complications / Q000188:drug therapy* / Q000378:metabolism; D013312:Stress, Physiological / Q000150:complications
D000897:Anti-Ulcer Agents; D010936:Plant Extracts; D000096:Acetone; D007213:Indomethacin