Pyrophosphate Excretion in Various Groups of Calcium Stoneformers: Effect of a Calcium-Restricted Diet
The role of inhibitors of crystallization seems important since urine is frequently supersaturated with respect to calcium oxalate and calcium phosphate1. Inorganic pyrophosphate is one of several ions in urine which can inhibit the precipitation of calcium salts in vitro but reports in the literature on the importance of this inhibitor have been conflicting3,4. These discrepancies may be explained by various factors which can affect pyrophosphate excretion, such as the urinary excretion of calcium and the dietary intake of phosphate5.
KeywordsCalcium Oxalate Calcium Excretion Tubular Reabsorption Restricted Diet Calcium Salt
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