Effect of Trachyspermum copticum L. of ethanolic extract on prevention of calcium oxalate crystals in kidney of male Wistar rats

Urolithiasis is a worldwide problem. Kidney stones have different chemical components. Calcareous stones are still by far the most common nephroliths accounting for more than 80% of stones. In Iranian folk medicine, many plants are used for treatment of kidney stones. In the present study, effect of Trachyspermum copticum L. seeds hydro-alcoholic extract on calcium oxalate crystallization was studied in kidney of male rats. At first, hydro-alcoholic extract of plant at doses of 12.5, 25 and 50 mg/kg were prepared. Crystallization of calcium oxalate was induced by adding ammonium chloride and ethylene glycol in drinking water for 3 and 38 days, respectively. Control group was treated by drinking water. Experimental groups were treated by plant extract at doses 12.5, 25 and 50 mg/kg for 41 days, interperitoneally. After 41 days, animals were anesthetized by ether and left kidneys removed and put them in buffered formaldehyde. Specimens were prepared for histological studies and stained by H&E staining method. Results showed that treatment of extract decreased number of crystals in kidney sections of experimental animals in comparison with control group (p