Importance of UDP-glucuronosyltransferase 1A1 expression in skin and its induction by ultraviolet B in neonatal hyperbilirubinemia
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Udp-glucuronosyltransferase (ugt) 1a1 Expression in Skin and Role of Uvb in Induction of Ugt1a1 in the Neonatal Hyperbilirubinemia
This study is to determine the expression pattern of human UGT1A family enzymes in human skin. This study revealed a protective role of UGT1A1 expressed in the skin against neonatal hyperbilirubinemia. Sunlight, a natural and free source of light, makes it possible to treat neonatal jaundice without phototherapy units while allowing mothers to breast-feed neonates.
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While breast milk has been known as a cause of neonatal hyperbilirubinemia, the underlying mechanism of breast milk-induced jaundice has not been clarified. Here, the impact of fatty acids on human UDP-glucuronosyltransferase (UGT) 1A1--the sole enzyme that can metabolize bilirubin--were examined. Oleic acid, linoleic acid, and docosahexaenoic acid (DHA) strongly inhibited UGT1A1 activity. Fort...
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Human UDP-glucuronosyltransferase (UGT) 1A1 is the enzyme that detoxifies neurotoxic bilirubin by conjugating it with glucuronic acid. UGT1A1 also plays a critical role in the detoxification and excretion of endogenous and exogenous lipophilic compounds mainly in the liver and gastrointestinal tract. Impaired or reduced UGT1A1 activity causes unconjugated hyperbilirubinemia (Gilbert's syndrom...
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