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Perinatal growth hormone (GH) physiology : effect of GH-releasing factor on maternal and fetal secretion of pituitary and placental GH.
De Zegher, F.; Vanderschueren-Lodeweyckx, M.; Spitz, B. et al.
1990In Journal of Clinical Endocrinology and Metabolism, 71 (2), p. 520-522
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Keywords :
Cesarean Section; Female; Fetal Blood/analysis; Growth Hormone/blood/secretion; Growth Hormone-Releasing Hormone/analogs & derivatives/pharmacology; Humans; Peptide Fragments/pharmacology; Pituitary Gland, Anterior/drug effects/secretion; Placenta/drug effects/secretion; Placenta Previa/physiopathology; Pregnancy; Sermorelin
Abstract :
[en] To study regulation of the secretion of human pituitary GH (hGH) and placental GH (hPGH) in the pregnant woman and human fetus, the GH-releasing factor Sermorelin [GRF-(l–29)-NH2] was administered to pregnant women at term (n = 5), just before elective cesarean section; saline was administered in control studies (n = 5). The effects of GRF-(1–29)-NH2 administration on maternal and fetal serum concentrations of hGH and GRF-(l–29)-NH2 and maternal serum levels of hPGH were evaluated at birth. The mean time span between injection and birth was 20 min (range, 15–25 min). Cord serum hGH concentrations were similar in infants of GRF-(1–29)-NH2-injected mothers and control infants. GRF-(l–29)-NH2 elicited a consistent but small rise in maternal hGH serum concentrations (P = 0.08), whereas hPGH concentrations remained unaltered. Finally, GRF-(l–29)-NH2 concentrations were undetectable in cord serum, but readily detectable in concomitantly obtained maternal serum. In conclusion, these data suggest that hGH secretion in the pregnant woman at term is suppressed at the pituitary level, that GRF does not affect hPGH secretion, and that fetal hGH secretion is independent of circulating maternal GRF, probably because of lack of transplacental GRF passage.
Disciplines :
Endocrinology, metabolism & nutrition
Author, co-author :
De Zegher, F.
Vanderschueren-Lodeweyckx, M.
Spitz, B.
Faijerson, Y.
Blomberg, F.
Beckers, Albert ;  Université de Liège - ULiège > Département des sciences cliniques > Endocrinologie
Hennen, Georges ;  Université de Liège - ULiège > Endocrinologie clinique
Frankenne, Francis;  Université de Liège - ULiège > Département des sciences cliniques
Language :
English
Title :
Perinatal growth hormone (GH) physiology : effect of GH-releasing factor on maternal and fetal secretion of pituitary and placental GH.
Publication date :
1990
Journal title :
Journal of Clinical Endocrinology and Metabolism
ISSN :
0021-972X
eISSN :
1945-7197
Publisher :
Endocrine Society, Chevy Chase, United States - Maryland
Volume :
71
Issue :
2
Pages :
520-522
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 27 May 2010

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