Abstract
The activity of rat liver microsomal uridine diphosphate glucuronosyltransferase towards 4-methylumbelliferone (4-MU-UDPGT) increased markedly between day 18 of fetal life and day 1 after birth. This increase in UDPGT activity resulted largely from a gradual increase in the fraction of enzyme activity which was detected after pretreatment of microsomes with digitonin ('latent' activity). The latent fraction of 4-MU-UDPGT activity approached at birth the values obtained for adult rat liver. This perinatal increase in latency of 4-MU-UDPGT activity may be associated with the concurrent fluidization of the microsomal membrane which is observed in the perinatal period.
Original language | English |
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Pages (from-to) | 30-34 |
Number of pages | 5 |
Journal | Developmental Pharmacology and Therapeutics |
Volume | 12 |
Issue number | 1 |
DOIs | |
State | Published - 1989 |