Estrogen metabolism pathways in preeclampsia and normal pregnancy.
Estradiol-17β metabolites
Estrogen metabolism pathways
LC-MS/MS
Preeclampsia
Urine
Journal
Steroids
ISSN: 1878-5867
Titre abrégé: Steroids
Pays: United States
ID NLM: 0404536
Informations de publication
Date de publication:
04 2019
04 2019
Historique:
received:
01
10
2018
revised:
08
01
2019
accepted:
22
01
2019
pubmed:
28
1
2019
medline:
23
2
2020
entrez:
28
1
2019
Statut:
ppublish
Résumé
Experimental studies suggest that shallow uterine cytotrophoblastic invasion in preeclampsia may be associated with alterations in estrogen metabolism. The objective of this study was to examine the association of parent estrogens and their metabolites between preeclamptics and normotensive controls at three time points during pregnancy. Methods Parent estrogens and their metabolites were measured in urine by high-performance liquid chromatography-tandem mass spectrometry in 66 singleton preeclampsia cases and 137 matched controls. Percent change in geometric means were estimated by general linear models adjusted for gestational age at sampling, maternal age, parity, race, body mass index, and use of assisted reproductive technologies. Results Urinary estradiol concentrations were approximately 50% higher in early pregnancy in preeclampsia cases than controls, but similar late in pregnancy. There was an approximate 20% reduction in total 2-pathway metabolites and 4-pathway metabolites in cases compared with controls in mid- and later pregnancy that was slightly attenuated with adjustment for BMI, and a reduction in 16-pathways in mid-pregnancy but not later. Conclusion(s) Our findings show that estradiol concentrations were elevated in preeclampsia versus controls in early pregnancy. In mid-pregnancy, all three estrogen metabolism (2-, 4-, and 16-) pathways showed some reduction in preeclampsia that appeared to continue for the 2- and 4-pathways in late pregnancy. We hypothesize that this may indicate that there is a generalized reduction in estrogen metabolism in preeclampsia rather than a deficit of specific enzymes, such as those involved in the 2-hydroxylation pathway.
Sections du résumé
BACKGROUND
Experimental studies suggest that shallow uterine cytotrophoblastic invasion in preeclampsia may be associated with alterations in estrogen metabolism. The objective of this study was to examine the association of parent estrogens and their metabolites between preeclamptics and normotensive controls at three time points during pregnancy. Methods Parent estrogens and their metabolites were measured in urine by high-performance liquid chromatography-tandem mass spectrometry in 66 singleton preeclampsia cases and 137 matched controls. Percent change in geometric means were estimated by general linear models adjusted for gestational age at sampling, maternal age, parity, race, body mass index, and use of assisted reproductive technologies. Results Urinary estradiol concentrations were approximately 50% higher in early pregnancy in preeclampsia cases than controls, but similar late in pregnancy. There was an approximate 20% reduction in total 2-pathway metabolites and 4-pathway metabolites in cases compared with controls in mid- and later pregnancy that was slightly attenuated with adjustment for BMI, and a reduction in 16-pathways in mid-pregnancy but not later. Conclusion(s) Our findings show that estradiol concentrations were elevated in preeclampsia versus controls in early pregnancy. In mid-pregnancy, all three estrogen metabolism (2-, 4-, and 16-) pathways showed some reduction in preeclampsia that appeared to continue for the 2- and 4-pathways in late pregnancy. We hypothesize that this may indicate that there is a generalized reduction in estrogen metabolism in preeclampsia rather than a deficit of specific enzymes, such as those involved in the 2-hydroxylation pathway.
Identifiants
pubmed: 30685337
pii: S0039-128X(19)30007-8
doi: 10.1016/j.steroids.2019.01.005
pmc: PMC6681456
mid: NIHMS1039881
pii:
doi:
Substances chimiques
Estrogens
0
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
8-14Subventions
Organisme : NIEHS NIH HHS
ID : R01 ES018872
Pays : United States
Organisme : Intramural NIH HHS
ID : ZIA CP010168-18
Pays : United States
Informations de copyright
Copyright © 2019 Elsevier Inc. All rights reserved.
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