Abstract
Sodium glycolate feeding (50 mg/100 g body weight/day) to adult male rats for 7 days resulted in increased activities of glycolate oxidase in liver and lactate dehydrogenase in liver and kidney. However, the activity of glycolate dehydrogenase decreased both in liver and kidney. Treatment of sodium pyruvate (100 mg/100 g body weight/day) to the glycolate-fed rats resulted in lowered liver glycolate oxidase activity, and the glycolate dehydrogenase activity was further decreased as compared to glycolate-fed rats in both age groups. However, lactate dehydrogenase activity was not affected by pyruvate feeding in comparison to the glycolate-treated group. It is concluded that glycolate-induced oxalate biosynthesis in rats involves increased activity of liver glycolate oxidase, and pyruvate feeding inhibits glycolate oxidase, thereby decreasing oxalate biosynthesis.
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