VITAMIN B_6 METABOLISM IN HIGH TEMPERATURE ENVIRONMENT : (I) CHANGES OF THE CONTENTS OF VITAMIN B_6 AND PYRIDOXIC ACID IN BLOOD AND URINE OF RABBITS AT HIGH TEMPERATURE

Abstract

Determinations of pyridoxine+pyridoxamine, pyridoxal and pyridoxic acid were made in blood and urine of rabbits exposed to high temperature. No significant changes was found in blood after the exposure to 3 hours at 30,35 and 37℃, 12 hours at 30℃ or 24 hours at 35℃. But the blood levels fell after the exposure to 48 hours at 35℃. The urinary excretion of vitamin B_6 and pyridoxic acid decreased by the exposure to high temperature.