Abstract
In order to establish the pharmacological basis for the ethnomedicinal use of stem bark extracts of Calophyllum brasiliense Camb. in gastrointestinal affections, this study examined the effects of a dichloromethane fraction (DCMF), obtained from the hexane extract of bark, on ethanol, indomethacin and hypothermic restraint stress-induced gastric lesions in mice and rats, respectively. Oral administration of DCMF at doses ranging from 12.5–250 mg/kg significantly inhibited the development of gastric lesions in all the three test models. It caused significant decreases of the pyloric-ligation and bethanechol-stimulated gastric secretion, and also the free and total acidities. Besides, DCMF offered protection against ethanol-induced depletion of stomach wall mucus and reduction in nonprotein sulfhydryl concentration. The results indicate that DCMF from C. brasiliense possesses antisecretory, antiulcer and cytoprotective properties.
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