Abstract
Aqueous extracts of seeds of Dolichos biflorus was evaluated for its diuretic activity against experimentally induced renal stone in rats. The animals were grouped into seven groups of six animals each. Hyperoxularia was induced by giving ethylene glycol and ammonium chloride to a final concentration of 0.75% and 2% in drinking water for a period of 28 days. The first group of animals served as negative (healthy) control and received normal distilled water. The second group served as positive (untreated) control and no extract was given to this group. Rest groups received aqueous extract of Dolichos biflorus at a dose of 100, 150, 200, 250 and 300 mg/kg. The urine volume was recorded for all the groups after every seven days for about 28 days. The extracts treated groups showed increase in total urine production and the extract treated group (300 mg/kg) showed significantly and markedly increased the urine output (p < 0.01). There was significant (p < 0.01) decrease in pH of positive control rats as compared to extract treated rats. Urinary pH also showed dose dependent effect, the higher the dose the lesser the decrease in pH of urine. The extract treated rats showed lesser decrease in pH as compared to positive control rats. Crystals in urine also varied with dose of extract and lesser crystals were found in rats treated with higher dose of extract and maximum crystals were found in positive control group. These findings suggest the possible traditional use of this plant in nephrolithiasis as diuretics.
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