Document Detail

Growth hormone stimulates adrenal steroidogenesis in the fetus.
MedLine Citation:
PMID:  7219525     Owner:  NLM     Status:  MEDLINE    
The 'surge' of corticosteroid in fetal plasma during late gestation has been implicated in the initiation of parturition and the maturation of enzyme systems in organs such as the lung, liver, adrenal medulla and thyroid. But in all species studied, the mechanism responsible for increased secretion in the fetus remains unclear. The hormone adrenocorticotropin (ACTH) is well established as the primary regulator of adrenocortical cellular growth and secretory function during fetal and adult life. However, no increase in fetal plasma ACTH has been observed before the corticosteroid surge in sheep or humans, although differential responsiveness of the fetal adrenal cortex to ACTH at various gestational ages and a possible role of extra-adrenal inhibitory factors have been proposed. The possible steroidogenic effect of alpha-melanocyte-stimulating hormone (alpha MSH) on fetal adrenocortical function is controversial, and we could not demonstrate any such action in fetal lamb or rabbit. Prolactin and growth hormone (GH) potentiate the steroidogenic effect of ACTH in adult rats but prolactin had no such effect in fetal lamb. We have investigated the steroidogenic properties of GH, and report here that it stimulates adrenal steroidogenesis in the fetal but not maternal rabbit in vitro and in fetal but not maternal sheep in vitro as well as in vivo.
U P Devaskar; S U Devaskar; S Voina; N Velayo; M A Sperling
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Nature     Volume:  290     ISSN:  0028-0836     ISO Abbreviation:  Nature     Publication Date:  1981 Apr 
Date Detail:
Created Date:  1981-06-25     Completed Date:  1981-06-25     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  0410462     Medline TA:  Nature     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  404-5     Citation Subset:  IM    
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MeSH Terms
Adrenal Cortex Hormones / biosynthesis*
Adrenal Glands / embryology*
Growth Hormone / pharmacology*
Pituitary-Adrenal System / embryology
Stimulation, Chemical
Reg. No./Substance:
0/Adrenal Cortex Hormones; 9002-72-6/Growth Hormone

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