PMID: 410407Aug 15, 1977

Precocious development of uridine diphosphate glucuronosyltransferase activity during organ culture of foetal rat liver in the presence of glucocorticoids

The Biochemical Journal
G J WishartG J Dutton


1. Precocious development of mammalian UDP-glucuronosyltransferase (EC induced by endogenous compounds of known chemical composition is reported for the first time. 2. This development occurs in cultured explants of foetal rat liver when exposed to corticosteroids possessing a pregn-4'-ene structure and a hydroxy or an oxo group at C-11. 3. Explants from 14-day foetuses cultured for 3 days in a chemically defined medium containing dexamethasone exhibited transferase activities towards o-aminophenol within adult male values. Those liver transferase activities attained in utero by 17 days were still negligible. 4. Evidence from several approaches indicated that the explants required glucocorticoids for expression of the transferase, not for maintenance of viability. 5. Glucocorticoid-dependent stimulation of transferase activity required incorporation of L-[14C]leucine into protein, as judged from the pulsing of cultures with cycloheximide. 6. The relevance of these culture experiments to the situation in vivo is discussed.


Oct 1, 1986·Xenobiotica; the Fate of Foreign Compounds in Biological Systems·P L Grover
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Jan 1, 1989·Teratogenesis, Carcinogenesis, and Mutagenesis·G BronzettiR Vellosi
Nov 28, 2007·Drug Metabolism and Disposition : the Biological Fate of Chemicals·K C FalknerR A Prough

Related Concepts

Enzyme Induction
Glucocorticoid Effect
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