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  • Title: An animal model of calcium oxalate urolithiasis based on a cyclooxygenase 2 selective inhibitor.
    Author: Jeong BC, Park MY, Kwak C, Kim BS, Kim JI, Kim HH.
    Journal: Urol Res; 2005 Dec; 33(6):453-9. PubMed ID: 16311770.
    Abstract:
    Our aim was to develop a stone-forming animal model involving renal tubular injury using a cyclooxygenase 2 selective inhibitor. Male Sprague-Dawley rats fed chow containing 3% sodium oxalate with or without 100 mg/kg celecoxib were compared to animals fed normal chow. Rats were killed after 2 or 4 weeks and the kidneys were harvested for morphological examination. Collections of 24-h urine were made before kidney harvest. After 2 weeks only a few crystals were observed in rats that received oxalate and celecoxib, but after 4 weeks more crystals were observed at the renal papilla than in rats that received only oxalate. Few crystals were found in rats fed normal chow with or without celecoxib. The urinary activities of gamma-glutamyl transpeptidase (GGT) were increased by celecoxib administration whereas creatinine clearance rates were unchanged. In rats fed oxalate, urinary oxalate excretion increased, but calcium excretion decreased. This model using a cyclooxygenase 2 selective inhibitor is a useful stone forming animal model involving mild renal tubular injury together with mild hyperoxaluria.
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