Journal
HYPERTENSION IN PREGNANCY
Volume 31, Issue 4, Pages 398-404Publisher
TAYLOR & FRANCIS INC
DOI: 10.3109/10641955.2012.690054
Keywords
Preeclampsia; Apelin; APJ; Hypertension; Epidemiology
Funding
- RTI International
- National Institutes of Health [R01 HD-34-888, R01 HD-32562]
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Background. Preeclampsia is a hypertensive disorder that complicates 3-7% of pregnancies. The development of preeclampsia has not been completely elucidated and current therapies are not broadly efficacious. The apelinergic system appears to be involved in hypertensive disorders and experimental studies indicate a role of this system in preeclampsia. Thus, an epidemiological evaluation of apelin protein concentration in plasma was conducted in case-control study of pregnant women. Methods. Data and maternal plasma samples were collected from pregnant women with confirmed preeclampsia (n = 76) or normotensive controls (n = 79). Concentrations of apelin peptides were blindly measured using enzyme-linked immunosorbent assay. Data were subjected to statistical analyses. Results. Plasma apelin concentrations, measured at delivery, were lower in preeclampsia cases compared with controls (mean +/- standard deviation: 0.66 +/- 0.29 vs. 0.78 +/- 0.31 ng/mL, p = 0.02). After controlling for confounding by maternal age, smoking status, and pre-pregnancy body mass index, odds of preeclampsia were 48% lower for women with high versus low plasma apelin (>= 0.73 vs. <0.73 ng/mL) concentrations. Conclusion. Reduced circulating apelin peptides may be associated with preeclampsia. The apelinergic system should be further investigated to elucidate its role in preclampsia and other hypertensive maternal disorders.
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