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J Matern Fetal Neonatal Med ; 24(11): 1371-7, 2011 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-21381877

RESUMO

OBJECTIVES: To evaluate the association between endothelial activation markers in the maternal circulation with nitric oxide (NO) synthesis in human umbilical endothelial cells. STUDY DESIGN: This is a case-control study of normal and pre-eclamptic pregnancies. The levels of sE-selectin, soluble vascular cell adhesion molecule 1 (sVCAM-1), and soluble fms-like tyrosine kinase 1 (sFlt-1) were measured by enzyme-linked immunosorbent assay, and histamine-induced NO synthesis was detected by fluorometric examination of the human umbilical vein endothelial cells (HUVECs) isolated from normal and pathological pregnancies. RESULTS: Mothers with severe pre-eclamptic pregnancies have premature and smaller babies than mothers with normal pregnancies (P < 0.05); they also have high maternal plasma levels of sVCAM-1 (∼2-fold), sFlt-1 (∼2.5-fold), and lower (∼70%) histamine-stimulated NO synthesis in HUVECs. A positive relationship between systolic blood pressure (SBP) and plasma levels of sE-selectin, sVCAM-1, and sFlt-1 was demonstrated. Moreover, levels of sE-selectin, sVCAM-1, and sFlt-1 were negatively associated with newborn weight (NBW), gestational age at delivery, and NO synthesis. Women with high E-selectin (>63 ng/ml), VCAM-1 (>752 ng/ml), and sFlt-1 (>15204 pg/ml) showed high risk (∼2-fold) for preterm delivery and very preterm delivery, or fetal weight <1500 g (∼1.5-fold) compared with women with low levels. CONCLUSIONS: High circulating levels of maternal endothelial dysfunction markers present in pre-eclampsia are associated with decreased NO synthesis in fetal endothelium.


Assuntos
Selectina E/sangue , Endotélio/embriologia , Óxido Nítrico/biossíntese , Pré-Eclâmpsia/fisiopatologia , Molécula 1 de Adesão de Célula Vascular/sangue , Receptor 1 de Fatores de Crescimento do Endotélio Vascular/sangue , Adulto , Peso ao Nascer , Pressão Sanguínea , Endotélio/fisiopatologia , Feminino , Idade Gestacional , Células Endoteliais da Veia Umbilical Humana/metabolismo , Humanos , Recém-Nascido , Gravidez , Nascimento Prematuro/sangue
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