Levels of maternal serum angiogenic factors in third-trimester normal pregnancies: reference ranges, influence of maternal and pregnancy factors and fetoplacental Doppler indices.

Abstract:

AIM:To establish normal ranges of maternal placental growth factor (PlGF), soluble fms-like tyrosine kinase-1 (sFlt-1) and sFlt-1/PlGF ratio at 32-41 weeks' gestation and to evaluate the influence of maternal characteristics, and of fetoplacental Doppler. MATERIAL AND METHODS:Serum levels of PlGF, sFlt-1 and sFlt-1/PlGF ratio were measured in 300 noncomplicated pregnancies (30 at each gestational week between 32 and 41). Quantile regression analysis was used to derive gestational age (GA)-adjusted normal ranges, and to account for characteristics that might influence serum levels. The relationship with Doppler indices was tested, including umbilical artery pulsatility index and middle cerebral artery pulsatility index. RESULTS:PlGF decreased with GA from 32 weeks, while sFlt-1 and sFlt-1/PlGF ratio increased steadily. None of the factors evaluated showed any significant influence on the levels of angiogenic factors. PlGF multiple of the median significantly correlated with mean uterine artery Doppler (R -0.17; p = 0.029). CONCLUSIONS:In normal pregnancies during the third trimester, serum PlGF decreases, sFlt-1 increases and sFlt-1/PlGF ratio increases with GA. Angiogenic factor levels needed no adjustment for factors such as smoking, body mass index, blood pressure or parity.

journal_name

Fetal Diagn Ther

authors

Lobmaier SM,Figueras F,Mercade I,Crovetto F,Peguero A,Parra-Saavedra M,Ortiz JU,Crispi F,Gratacós E

doi

10.1159/000360078

subject

Has Abstract

pub_date

2014-01-01 00:00:00

pages

38-43

issue

1

eissn

1015-3837

issn

1421-9964

pii

000360078

journal_volume

36

pub_type

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