Maternal circulating angiogenic factors in twin and singleton pregnancies - 27/04/15
Abstract |
Objective |
The purpose of this study was to compare longitudinally sampled maternal angiogenic proteins between singleton and twin pregnancies.
Study Design |
Placental growth factor (PlGF), soluble feline McDonough sarcoma (fms)-like tyrosine kinase (sFlt)-1, and soluble endoglin from healthy pregnant women were quantified at 10, 18, 26, and 35 weeks’ gestation (n = 91), and during the third trimester (31-39 weeks) and at delivery (33-41 weeks; n = 41). Geometric means and 95% confidence intervals were calculated for gestational age-adjusted angiogenic protein concentrations and compared between matched twin and singleton pregnancies.
Results |
Maternal sFlt-1 concentrations and the sFlt-1/PlGF ratio were higher in twins than singletons across pregnancy and at delivery, with the greatest differences at week 35 (sFlt-1: 36,916 vs 10,151 pg/mL; P < .0001; sFlt-1/PlGF: 168.4 vs 29.0; P < .0001). Maternal concentrations of soluble endoglin also were higher in the third trimester and delivery. Maternal PlGF concentrations were lower in twin than singleton pregnancies at week 35 only (219.2 vs 350.2 pg/mL; P < .0001). Placental weight appeared to be inversely correlated with maternal sFlt-1/PlGF ratio at the end of pregnancy in both twins and singletons.
Conclusion |
Higher maternal antiangiogenic proteins in twin than singleton pregnancies does not appear to be due to greater placental mass in the former, and may be one explanation for the increased risk of preeclampsia in women carrying multiple gestations. Determining whether women with a history of multiple gestations have an altered cardiovascular disease and breast cancer risk, like those with a history of preeclampsia, is warranted.
Le texte complet de cet article est disponible en PDF.Key words : angiogenic balance, endoglin, pregnancy, singletons, soluble fms-like tyrosine kinase-1, twins
Plan
| This research was supported by federal funds from the Division of Cancer Epidemiology and Genetics and Center for Cancer Training, Cancer Prevention Fellowship Program, National Cancer Institute. The data from the BIRTH cohort were funded by a research grant (9MZ-04-06N03) from Abbott Laboratories. |
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| T.F.M. received a research grant (9MZ-04-06N03) from Abbott Diagnostics to measure the angiogenic factors in the BIRTH cohort. A.K. is an investigator of the Howard Hughes Medical Institute, a coinventor on multiple patents for preeclampsia markers, and a consultant to Siemens Diagnostics, and has grant funding from Thermofisher and a financial interest in Aggamin LLC. The remaining authors report no conflict of interest. |
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| Cite this article as: Faupel-Badger JM, McElrath TF, Lauria M, et al. Maternal circulating angiogenic factors in twin and singleton pregnancies. Am J Obstet Gynecol 2015;212:636.e1-8. |
Vol 212 - N° 5
P. 636.e1-636.e8 - mai 2015 Retour au numéro
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