Fractional excretion of angiogenic factors in women with severe preeclampsia

Obstetrics and Gynecology
Catalin S BuhimschiIrina A Buhimschi

Abstract

We estimated the fractional excretions of soluble fms-like tyrosine kinase 1 (sFlt-1), vascular endothelial growth factor, and placental growth factor of severely preeclamptic women at the time of disease clinical manifestation. Levels of free sFlt-1, vascular endothelial growth factor, and placental growth factor were measured by immunoassay from time-matched serum-urine samples from 64 women in the following groups: nonpregnant reproductive aged (n = 9), healthy pregnant controls (n = 13), mildly preeclamptic women (n = 15), and women with severe preeclampsia (n = 27). Urinary concentrations of angiogenic factors were normalized to creatinine and fractional excretions calculated. Correlations were estimated between fractional excretions of angiogenic factors, albuminuria, nonspecific proteinuria and urine protein-to-creatinine ratio. Severely preeclamptic women had more than double urinary vascular endothelial growth factor (P = .01) and fractional excretion of vascular endothelial growth factor compared with mildly preeclamptic women (P = .007) or pregnant controls (P < .001). Serum, urine and fractional excretion levels of sFlt-1 were much higher among severely preeclamptic women compared with all the other pregnant groups ...Continue Reading

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