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Unconjugated estetrol in normal pregnancy
Clinical and Experimental Obstetrics & Gynecology
|January 1, 1982
Summary
This study measured Estetrol levels in near-term pregnancies. Higher Estetrol concentrations were found in fetal plasma and amniotic fluid compared to maternal plasma, confirming its fetal origin.
Area of Science:
- Reproductive biology
- Endocrinology
- Perinatal medicine
Background:
- Estetrol (15 alpha-hydroxyestriol) is a fetal-derived estrogen.
- Understanding Estetrol's distribution is crucial for perinatal research.
Purpose of the Study:
- To quantify Estetrol levels in maternal plasma, fetal plasma, and amniotic fluid during late pregnancy.
- To investigate the origin and distribution of Estetrol in the feto-placental unit.
Main Methods:
- Radioimmunoassay (RIA) was employed to measure Estetrol concentrations.
- Samples were collected from near-term pregnancies.
Main Results:
- Estetrol concentrations were significantly higher in fetal plasma and amniotic fluid than in maternal plasma.
- This distribution pattern supports the fetal origin of Estetrol.
Conclusions:
- The findings confirm the fetal origin of Estetrol.
- Further research into Estetrol's role within the amniotic compartment is warranted.