A decreased rate of progesterone metabolism is detected in human fetal membranes several weeks preceding normal parturition at term. A 10- to 20-fold decrease in 20α-hydroxysteroid oxidoreductase activity and a 2- to 6-fold decrease in 5α-reductase activity are observed in human amnion and chorion laeve after 33 weeks' gestation.
|Original language||English (US)|
|Number of pages||4|
|Journal||Obstetrics and gynecology|
|State||Published - Jul 1977|
ASJC Scopus subject areas
- Obstetrics and Gynecology