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  • Title: Effect of thiamine deficiency, pyrithiamine and oxythiamine on pyruvate metabolism in rat liver and brain in vivo.
    Author: Meghal SK, O'Neal RM, Koeppe RE.
    Journal: J Nutr Sci Vitaminol (Tokyo); 1977; 23(5):385-93. PubMed ID: 604430.
    Abstract:
    Rats were fed either a thiamine-deficient diet of diets containing pyrithiamine or oxythiamine. When symptoms of thiamine deficiency appeared, the animals were injected intraperitoneally with [2-14C] pyruvate six to twelve minutes prior to sacrifice. Free glutamic and aspartic acids were isolated from liver and brain and degraded. The results indicate that, in thiamine-deficient or oxythiamine-treated rats, pyruvate metabolism in liver and brain is similar to that in normal animals. In contrast, pyrithiamine drastically decreases the oxidative decarboxylation of pyruvate by rat liver.
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