Abstract
1. 1. UDP-glucose, UDP-N-acetylglucosamine and UDP-glucuronic acid concentrations in various tissues of vertebrates were measured; changes in UDP-sugar quantity during the prenatal and postnatal development of pigs were also studied. 2. 2. Compared to UDP-glucose and UDP-N-acetylglucosamine a larger amount of UDP-glucuronic acid in guinea-pig and pig liver as well as in guinea-pig small intestine was established. No UDP-glucuronic acid was found in the spleen, pancreas, pituitary gland, testis and oviduct of the hen. 3. 3. In rat small intestine, rat and guinea-pig pancreas, anterior lobe of the pituitary gland of the calf, isthmus and magnum of the oviduct of the hen the quantity of UDP-N-acetylglucosamine is considerably higher than that of UDP-glucose. In all other cases the UDP-glucose concentration predominated over that of the other two UDP-sugars. 4. 4. In the early stages of pig embryogenesis a large liver UDP-glucose and UDP-N-acetylglucosamine concentration was found, which decreased five to seven times several days before birth.
Published Version
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