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Type: Journal article
Title: Alterations in human placental 11β-hydroxysteroid dehydrogenase type 1 and 2 with gestational age and labour
Other Titles: Alterations in human placental 11beta-hydroxysteroid dehydrogenase type 1 and 2 with gestational age and labour
Author: Murphy, V.
Clifton, V.
Citation: Placenta, 2003; 24(7):739-744
Publisher: W B Saunders Co Ltd
Issue Date: 2003
ISSN: 0143-4004
Abstract: 11β-hydroxysteroid dehydrogenase type 1 and type 2 may be important in the process of human parturition and the regulation of fetal growth, by the modulation of cortisol concentrations in the fetal compartment. Changes in the expression and activity of these enzymes in late gestation have not been well described. This study has examined the gene expression of placental 11β-HSD1 and 2, activity of 11β-HSD2 and fetal cortisol concentrations during the final few weeks of human pregnancy and with the onset of labour. Placental 11β-HSD2 activity decreased significantly between 38 and 40 weeks. There were no significant changes in mRNA abundance or protein expression with gestational age or labour. Placental 11β-HSD1 mRNA abundance significantly increased with spontaneous labour. Fetal cortisol concentrations increased significantly with spontaneous labour. This study is the first to describe a decrease in 11β-HSD2 activity in the last few weeks of human gestation. This decrease in type 2 activity, along with an increase in 11β-HSD1 gene expression may be a mechanism by which cortisol concentrations rise at term to regulate fetal maturation and activate pathways associated with labour.
Keywords: Pregnancy
11β-hydroxysteroid dehydrogenase
Description: © 2003 Elsevier Ltd
DOI: 10.1016/S0143-4004(03)00103-6
Appears in Collections:Aurora harvest
Obstetrics and Gynaecology publications

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