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  • Title: Anti-diarrhoeal activity of aqueous extract of Ocimum kilimandscharicum.
    Author: Sarin RV, Narwal S, Bafna PA.
    Journal: J Ethnopharmacol; 2013 Jun 21; 148(1):223-8. PubMed ID: 23603195.
    Abstract:
    ETHNOPHARMACOLOGICAL RELEVANCE: Ocimum kilimandscharicum Baker ex Güerke, commonly referred to as Kapur Tulsi, is a medicinal herb that belongs to the family of Lamiaceae. It is traditionally popular for its gastroprotective effects, including its use as a digestive and anti-diarrhoeal. AIM OF THE STUDY: The present study aims to prove the anti-diarrhoeal activity of aqueous extract of leaves of Ocimum kilimandscharicum in animal models. MATERIALS AND METHODS: The aqueous extract was tested at three different dose levels (100, 200 and 400mg/kg, p.o. in rats and the corresponding doses in mice) against castor-oil induced diarrhoea model and castor oil induced enteropooling assay in rats; and charcoal meal test/intestinal motility test in mice. The parameters observed were the onset of defecation, cumulative faecal weight and consistency of faeces in the castor oil induced diarrhoea model; the weight of intestinal content in castor oil induced enteropooling assay; and the distance travelled by charcoal in the intestinal motility test. RESULTS: A significant delay in the onset of defecation (p<0.05), reduction in the cumulative faecal weight (p<0.001), along with a change in the faecal consistency from watery to solid form was observed at the dose of 200mg/kg in the castor oil-induced diarrhoea model. Similarly, the extract at the doses of 100mg/kg (p<0.01) and 200mg/kg (p<0.001) significantly decreased the weight of intestinal content in castor oil induced enteropooling assay. In the charcoal meal test the extract at the dose of 280mg/kg (corresponding to 200mg/kg in rats) significantly (p<0.01) reduced the distance travelled by charcoal. CONCLUSION: The aqueous extract of leaves of Ocimum kilimandscharicum showed anti-diarrhoeal activity, which may be due to its anti-motility and anti-secretory effects, which thus proved the traditional claims.
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