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Is there a role for isofurans and neuroprostanes in pre-eclampsia and normal pregnancy?
Anne E Barden1, Tomas B Corcoran, Emilie Mas
1School of Medicine and Pharmacology, Cardiovascular Research Centre, University of Western Australia, Perth. anne.barden@uwa.edu.au
Insights
Pre-eclampsia is linked to higher levels of isofurans and F(4)-neuroprostanes in mothers and newborns. These lipid oxidation products may impact fetal development and birth weight in pregnancies.
Area of Science:
- Reproductive Biology
- Biochemistry
- Perinatal Medicine
Background:
- Pre-eclampsia is a serious pregnancy complication affecting maternal and fetal health.
- Essential fatty acids like arachidonic and docosahexaenoic acid can oxidize into F(2)-isoprostanes (F(2)-IsoPs), isofurans (IsoFs), and F(4)-neuroprostanes (F(4)-NeuroPs).
- These oxidized metabolites may play a role in pre-eclampsia and fetal development.
Purpose of the Study:
- To investigate the levels of IsoFs, F(4)-NeuroPs, and F(2)-IsoPs in maternal and cord blood plasma.
- To determine the association of these lipid oxidation products with pre-eclampsia and birth weight.
Main Methods:
- Analysis of IsoFs, F(4)-NeuroPs, and F(2)-IsoPs in maternal and cord blood plasma samples.
- Comparison of metabolite levels between women with pre-eclampsia and normal pregnancies.
- Statistical analysis to assess relationships between metabolites, gestational age, and birth weight.
Main Results:
- Maternal plasma showed significantly elevated levels of IsoFs and F(4)-NeuroPs in women with pre-eclampsia, but not F(2)-IsoPs.
- Cord blood plasma revealed elevated F(4)-NeuroPs in neonates born to mothers with pre-eclampsia.
- In normal pregnancies, maternal F(2)-IsoPs, IsoFs, and F(4)-NeuroPs were inversely related to birth weight.
Conclusions:
- IsoFs and F(4)-NeuroPs are elevated in maternal circulation and F(4)-NeuroPs in cord blood of women with pre-eclampsia.
- Maternal lipid oxidation products may serve as predictors of low birth weight in normal pregnancies.
- Further research is needed to explore the predictive value of these markers for pregnancy complications in early gestation.
Abstract:
Pre-eclampsia is a complex disorder of pregnancy that adversely affects the mother and baby. Arachidonic acid and docosahexaenoic acid are essential for fetal development and can undergo free radical oxidation to F(2)-isoprostanes (F(2)-IsoPs) and isofurans (IsoFs); and F(4)-neuroprostanes (F(4)-NeuroPs), respectively. These metabolites may be relevant to pre-eclampsia and fetal development. We examined IsoFs, F(4)-NeuroPs, and F(2)-IsoPs in maternal plasma and cord blood plasma of 23 women with pre-eclampsia and 21 normal pregnancies. Women with pre-eclampsia had significantly elevated maternal IsoFs and F(4)-NeuroPs, but not F(2)-IsoPs. Cord blood F(4)-NeuroPs were elevated among neonates of women with pre-eclampsia. In women with pre-eclampsia, birth weight was predicted by gestation at delivery. The latter was also true in normal pregnancy, but birth weight was negatively related to maternal F(2)-IsoPs, IsoFs, and F(4)-NeuroPs. We have shown that in women with pre-eclampsia, IsoFs and F(4)-NeuroPs are elevated, and cord blood F(4)-NeuroPs are increased. The inverse relationship between maternal F(2)-IsoPs, IsoFs, and F(4)-NeuroPs and birth weight may be relevant as predictors of low birth weight in normal pregnancy. Future studies should examine whether these markers in maternal blood at early stages of pregnancy relate to subsequent maternal, fetal, and neonatal complications.
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