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Decreased Maternal Serum Leptin in Pregnancies Complicated by Preeclampsia

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Abstract

Objective

To determine whether circulating levels of leptin differed between women with preeclampsia and women who had an uncomplicated pregnancy.

Methods

Maternal and umbilical venous plasma leptin concentrations obtained at delivery were compared in 36 pairs of women with either preeclampsia or normal pregnancy, matched 1:1 for prepregnancy body mass index and fetal gestational age at delivery.

Results

Prepregnancy body mass index was 21.1 ± 2.1 kg/m2 in either study group (range 17.6−25.3 kg/m2 and 17.7−25.3 kg/m2 in the normal and preeclamptic group, respectively). Mean fetal gestational age at delivery was 40.1 ± 1.3 weeks and 40.1 ± 1.2 weeks in the normal and preeclamptic group, respectively. Median leptin concentrations were significantly lower (P < .0001) in women with preeclampsia (8.3 ng/mL, range 3.5−20.0 ng/mL) than in normal pregnant women (20.2 ng/mL, range 6.0−63.7 ng/mL). Median umbilical venous leptin was not significantly different between groups (preeclampsia 11.8 ng/mL, range 2.0−37.2 ng/mL; normal 7.6 ng/mL, range 1.6−24.3 ng/mL; P = .377). Umbilical venous leptin levels correlated positively with birth weight in both groups (preeclampsia ρ = 0.501, P = .002; normal ρ = 0.517, P = .001), whereas no correlations were found between maternal and fetal hormone concentrations. Maternal leptin concentrations did not correlate with birth weight.

Conclusion

Our data suggest that the correlation between umbilical venous leptin concentration and birth weight is independent of the presence of preeclampsia. Given the inconsistency in literature concerning circulating leptin levels in preeclampsia, further studies should investigate the regulatory systems of leptin in preeclampsia.

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Authors and Affiliations

  1. Department of Obstetrics and Gynecology, Division of Gynecology, Department of Obstetrics and Gynecology, Division of Special Gynecology, Institute for Statistical Analyses, Institute of Medical and Chemical Laboratories, University of Vienna Medical School, and Ignaz-Semmelweis-Frauenklinik der Stadt Wien, Waehnrnger Guertel 18-20, Vienna, A-1090, Austria

    Thomas Laml MD, Oliver Preyer MD, Beda W. Hartmann MD, Ernst Ruecklinger PhD, Gabor Soeregi MD & Peter Wagenbichler MD

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  1. Thomas Laml MD
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  2. Oliver Preyer MD
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  3. Beda W. Hartmann MD
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  4. Ernst Ruecklinger PhD
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  5. Gabor Soeregi MD
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  6. Peter Wagenbichler MD
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Correspondence to Thomas Laml MD.

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Laml, T., Preyer, O., Hartmann, B.W. et al. Decreased Maternal Serum Leptin in Pregnancies Complicated by Preeclampsia. Reprod. Sci. 8, 89–93 (2001). https://doi.org/10.1177/107155760100800205

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