RESUMEN
Five fractions (F1-F5) isolated from the methanolic leaf extract of Cissampelos mucronata A. Rich were investigated for antiulcer activity. At the dose of 450 mg/kg, they showed varying degree of protection against ulcer induced by indomethacin; the order of protection being F1>F4>F5>F2>F3. The antiulcer potency of F1 and F2 is comparable with that of cimetidine (100 mg/kg, i.p.). Inhibition of gastric mucosal damage may partly contribute to the antiulcer activity of the fractions.
Asunto(s)
Animales , Antiulcerosos/uso terapéutico , Cissampelos/química , Femenino , Indometacina/toxicidad , Masculino , Metanol/química , Fitoterapia , Extractos Vegetales/uso terapéutico , Hojas de la Planta/química , Plantas Medicinales/química , Ratas , Ratas Endogámicas , Úlcera Gástrica/inducido químicamenteRESUMEN
The methanolic extract of the leaves of C. mucronata was screened for anti-ulcer properties using animal models. On isolated guinea pig ileum the extract inhibited contractions evoked by acetylcholine, histamine and serotonin. The extract remarkably decreased the propulsive movement of gastrointestinal content. The extract exhibited significant anti-ulcer activity protecting rats from indomethacin, histamine and stress-induced ulcers. It inhibited the growth of both Gram-positive and Gram-negative microorganisms. The oral LD50 value of the extract in mice was estimated to be 8.5 +/- 0.35 g/kg. The results revealed that the plant C. mucronata has potential medicinal value as an anti-ulcer agent.