Maternal plasma concentrations of insulinlike growth factor-1 and insulinlike growth factor-binding protein-1 in early pregnancy and subsequent risk of preeclampsia
2004
Abstract Objectives: We investigated the relationship between maternal plasma free insulinlike growth factor-1 (IGF-1) and insulinlike growth factor-binding protein-1 (IGFBP-1) concentrations and risk of preeclampsia. Design and methods: Maternal blood samples were collected at 13 weeks' gestation on average. From the cohort, we selected 53 women who developed preeclampsia and 477 who remained normotensive. Free IGF-1 and IGFBP-1 concentrations were measured using immunoassays. Logistic regression procedures were used to calculate odds ratios (OR) and 95% confidence intervals (95% CI). Results: Women who developed preeclampsia had 18% and 27% lower concentrations of free IGF-1 and IGFBP-1, respectively, than controls ( P Conclusions: Alterations of free IGF-1 and IGFBP-1 concentrations in maternal plasma during early pregnancy are associated with risk of preeclampsia. These associations may help to further elucidate the pathologic processes of preeclampsia.
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