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  • Title: Effect of pyridoxine deficiency on ornithine aminotransferase in rat kidney and liver.
    Author: Ikeda M, Okada M.
    Journal: J Nutr Sci Vitaminol (Tokyo); 1985 Dec; 31(6):553-61. PubMed ID: 3834046.
    Abstract:
    The hepatic and renal activities of ornithine aminotransferase (OAT) [L-ornithine 2-oxoacid aminotransferase, EC 2.6.1.13] were determined in male and female rats given diet with or without pyridoxine. OAT activities were measured in the presence of pyridoxal phosphate. Diet without pyridoxine caused a decrease in hepatic OAT activity in males and no change in females and an increase in renal OAT activity in males and a decrease in females. The increased renal OAT activity in males was associated with increased immunochemically recognizable OAT, and was due to increased synthesis of OAT as shown by measurement of [3H]leucine incorporation in vivo. Thus OAT is regulated by nutritional conditions in different ways in liver and kidney.
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