Journal of Lipid Research, Vol 27, 801-806, Copyright © 1986 by Lipid Research, Inc.
Bile acid biosynthesis during development: hydroxylation of C27-sterols in human fetal liver
J Gustafsson
Several hydroxylase activities in bile acid biosynthesis were assayed in
subcellular fractions of human fetal liver. The livers were obtained at
legal abortions performed between gestational weeks 14 and 24. Microsomal
12 alpha-hydroxylase and mitochondrial 12 alpha- and 26- hydroxylase
activities were detected from week 14. The microsomal fraction also had
capacity for 25-hydroxylation, whereas 7 alpha- and 26-hydroxylase
activities were hardly detectable. The variation of the hydroxylase
activities between different experiments can be explained by inactivation
during the abortion or workup procedure. The results are discussed with
respect to earlier studies of bile acid biosynthesis during development and
adult life.