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Related Experiment Videos

Corticosteroid sulfates in fetus plasma.

K Nahoul1, F Daffos, F Forestier

  • 1Fondation de Recherche en Hormonologie, Fresnes, France.

Journal of Steroid Biochemistry
|October 1, 1989
PubMed
Summary
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Fetal steroid sulfate levels, including deoxycorticosterone sulfate (DOCS) and corticosterone sulfate (BS), decrease early in gestation. Later, cortisol sulfate (FS) and cortisone sulfate (ES) increase, suggesting a shift in steroid production during pregnancy.

Area of Science:

  • Endocrinology
  • Reproductive Biology
  • Biochemistry

Background:

  • Maternal and fetal steroid hormone production is crucial for pregnancy progression.
  • Understanding fetal adrenal steroidogenesis provides insights into developmental processes.

Purpose of the Study:

  • To investigate the patterns of four steroid sulfates in fetal blood plasma during gestation.
  • To explore potential shifts in steroid biogenesis during the second half of pregnancy.

Main Methods:

  • Radioimmunoassay of deoxycorticosterone sulfate (DOCS), corticosterone sulfate (BS), cortisone sulfate (ES), and cortisol sulfate (FS).
  • Analysis of umbilical vein blood plasma from 97 fetuses (19-32 weeks gestation).
  • Extraction and Sephadex LH 20 column chromatography for sample purification.

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Main Results:

  • DOCS and BS levels decreased until 27-28 weeks, while FS and ES showed minimal variation.
  • FS and ES levels significantly increased at 29-30 weeks.
  • BS levels significantly increased later in gestation, with no significant changes in other sulfates.

Conclusions:

  • Observed differences in 17-deoxy- and 17-hydroxycorticosteroid sulfate patterns suggest a potential shift towards increased cortisol production.
  • Correlations between different steroid sulfates indicate complex metabolic interrelationships and origins during fetal development.