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Related Experiment Videos

Significant decrease of maternal serum serotonin levels in singleton pregnancies complicated by the HELLP syndrome

J Backe1, S Bussen, T Steck

  • 1Department of Obstetrics and Gynecology, University of Würzburg Teaching Hospitals, Germany.

Gynecological Endocrinology : the Official Journal of the International Society of Gynecological Endocrinology
|February 26, 1998
PubMed
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Maternal serum serotonin levels are significantly decreased in pregnancies with severe preeclampsia or HELLP syndrome, indicating potential platelet activation. This finding may serve as an additional diagnostic marker for these conditions.

Area of Science:

  • Obstetrics and Gynecology
  • Perinatal Medicine
  • Clinical Chemistry

Background:

  • Hypertensive disorders of pregnancy, including preeclampsia and HELLP syndrome, are significant causes of maternal and fetal morbidity.
  • Serotonin, a biogenic amine, plays a role in various physiological processes and is largely stored in platelets.

Purpose of the Study:

  • To compare peripartum maternal and umbilical cord serum serotonin levels in singleton pregnancies complicated by HELLP syndrome or severe preeclampsia with those of appropriate controls.

Main Methods:

  • Maternal serum and umbilical cord serum serotonin levels were measured using 125I-radioimmunoassay.
  • Study population included women with HELLP syndrome (n=14) or severe preeclampsia (n=17) and two control groups (n=31 each).

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Main Results:

  • Maternal serum serotonin was significantly lower in the HELLP syndrome group (59.5 ng/ml) and severe preeclampsia group (51.6 ng/ml) compared to control groups.
  • Serotonin levels in the preeclampsia group were not different from the HELLP group but were significantly lower than controls.
  • A similar depression of serum serotonin concentrations was observed in both severe preeclampsia and HELLP syndrome.

Conclusions:

  • Decreased serum serotonin concentration is observed in both severe preeclampsia and HELLP syndrome, likely reflecting reduced platelet serotonin content.
  • This reduction may serve as an additional marker for platelet activation in these hypertensive disorders of pregnancy.
  • The causal role of these serotonin changes in the pathogenesis of hypertensive disorders of pregnancy requires further investigation.