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Endothelin system in normal and hypertensive pregnancy.
Torsten Slowinski1, Hans-H Neumayer, Thomas Stolze
1Department of Nephrology, University Hospital Charité, Humboldt University of Berlin, D-10117 Berlin, Germany.
Clinical Science (London, England : 1979)
|August 24, 2002
Summary
Elevated plasma endothelin (ET)-1 levels in pregnant women are linked to pre-eclampsia. Higher ET-1 concentrations at 36 weeks gestation significantly increase the risk of developing pre-eclampsia.
Area of Science:
- Obstetrics and Gynecology
- Cardiovascular Physiology
- Endocrinology
Background:
- Pre-eclampsia affects 5-7% of pregnancies, posing risks to both mother and fetus.
- The role of endothelin (ET)-1, a potent vasoconstrictor, in pre-eclampsia pathogenesis requires further investigation.
Purpose of the Study:
- To investigate plasma endothelin (ET)-1 concentrations in pregnant women.
- To determine the association between ET-1 levels and the development of pre-eclampsia.
Main Methods:
- Prospective study involving 30 pre-eclamptic and 125 non-pre-eclamptic pregnant women.
- Plasma ET-1 levels measured at 24 and 36 weeks gestation.
- Receiver operating characteristic (ROC) curve analysis and multivariate analysis used to assess diagnostic value.
Main Results:
- Higher ET-1 concentrations were observed in pre-eclamptic pregnancies at both 24 and 36 weeks.
- Plasma ET-1 levels at 36 weeks showed significant interaction with pre-eclampsia diagnosis (AUC=0.657, P=0.008).
- ET-1 >0.30 pg/ml at 36 weeks indicated a 4.6-fold increased risk of pre-eclampsia.
Conclusions:
- The endothelin (ET) system is activated in pre-eclampsia.
- Plasma ET-1 concentration at 36 weeks gestation may serve as a predictive marker for pre-eclampsia.