Conversion of progesterone to corticosteroids by the midterm fetal adrenal and kidney

Midterm fetal adrenal and kidney tissue homogenates were incubated with 3H-progesterone (1 μM) and its conversion to the 3H-corticosteroids metabolites studied. Cortisol (36.3%) and corticosterone (4.7%) were isolated from the adrenal, and 11-deoxycortisol (32.5%) and deoxycorticosterone (21.1%) fro...

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Veröffentlicht in:Steroids 1983-09, Vol.42 (3), p.299-310
Hauptverfasser: McShane, Patricia M., Fencl, Montserrat deM
Format: Artikel
Sprache:eng
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Zusammenfassung:Midterm fetal adrenal and kidney tissue homogenates were incubated with 3H-progesterone (1 μM) and its conversion to the 3H-corticosteroids metabolites studied. Cortisol (36.3%) and corticosterone (4.7%) were isolated from the adrenal, and 11-deoxycortisol (32.5%) and deoxycorticosterone (21.1%) from the kidney. The results of these incubations confirmed the presence of 17- and 21-hydroxylase activities in both fetal tissues, and that of 11β-hydroxylase activity only in fetal adrenal tissue. We conclude that during pregnancy when progesterone levels are high, biosynthesis by the fetal kidney of 11-deoxycortisol, the most abundant corticosteroid formed by this tissue in this investigation, might provide to the fetal adrenal an important precursor for cortisol biosynthesis within the fetal compartment.
ISSN:0039-128X
1878-5867
DOI:10.1016/0039-128X(83)90041-7