Document Detail

Influence of a single course of antenatal betamethasone on the maternal-fetal insulin-IGF-GH axis in singleton pregnancies.
MedLine Citation:
PMID:  16920374     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: We examined the hypothesis that a single course of antenatal betamethasone influences the maternal-fetal insulin-IGF-GH axis. DESIGN: A prospective, observational, pilot study consisting of four groups of pregnant women: (I) received betamethasone and delivered <2 weeks post treatment; (II) received betamethasone and delivered >2 weeks post treatment; (III) untreated women who delivered <37 weeks (preterm controls); (IV) untreated women who delivered >37 weeks (term controls). Maternal and mixed umbilical cord blood was collected at delivery and analyzed for insulin, glucose, IGF-I, IGF-II, IGFBP-1, IGFBP-3, GH, and GHBP. RESULTS: Betamethasone increased maternal insulin, glucose and IGF-I levels without affecting IGFBPs. In the fetal compartment, betamethasone treatment was associated with a delayed suppressive effect on GH and a sustained suppressive effect on IGF-II levels. There were no differences in infant size or neonatal morbidities between patients who delivered <2 weeks or >2 weeks post betamethasone treatment. In Group IV, birth weight correlated positively with cord IGF-I levels (r2=0.41, p=0.0098) and negatively with cord IGFBP-1 levels (r2=0.51, p=0.0039), and ponderal index correlated negatively with cord IGFBP-1 levels (r2=0.27, p<0.05). CONCLUSIONS: A single course of antenatal betamethasone influences the maternal-fetal insulin-IGF-GH axis, particularly fetal IGF-II levels, without measurable anthropometric changes at birth. Whether these effects have implications beyond the neonatal period remains to be determined.
Irfan Ahmad; Kay D A Beharry; Arwin M Valencia; Steve Cho; Leonel Guajardo; Michael P Nageotte; Houchang D Modanlou
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Publication Detail:
Type:  Controlled Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't     Date:  2006-08-22
Journal Detail:
Title:  Growth hormone & IGF research : official journal of the Growth Hormone Research Society and the International IGF Research Society     Volume:  16     ISSN:  1096-6374     ISO Abbreviation:  Growth Horm. IGF Res.     Publication Date:  2006 Aug 
Date Detail:
Created Date:  2006-09-04     Completed Date:  2006-11-14     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9814320     Medline TA:  Growth Horm IGF Res     Country:  Scotland    
Other Details:
Languages:  eng     Pagination:  267-75     Citation Subset:  IM    
Division of Neonatal-Perinatal Medicine, Department of Pediatrics, University of California Irvine, Orange, CA 92868, USA.
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MeSH Terms
Betamethasone / pharmacology*,  therapeutic use
Birth Weight / drug effects
Blood Glucose / analysis,  drug effects
Fetal Blood / drug effects
Gestational Age
Growth Hormone / blood*
Insulin / blood*
Insulin-Like Growth Factor Binding Protein 1 / blood
Insulin-Like Growth Factor Binding Protein 3 / blood
Insulin-Like Growth Factor I / analysis*
Insulin-Like Growth Factor II / analysis
Maternal-Fetal Exchange / drug effects*
Pilot Projects
Placenta / blood supply,  drug effects
Pregnancy Outcome
Premature Birth / drug therapy,  prevention & control
Prenatal Care* / methods
Time Factors
Reg. No./Substance:
0/Blood Glucose; 0/Insulin-Like Growth Factor Binding Protein 1; 0/Insulin-Like Growth Factor Binding Protein 3; 11061-68-0/Insulin; 378-44-9/Betamethasone; 67763-96-6/Insulin-Like Growth Factor I; 67763-97-7/Insulin-Like Growth Factor II; 9002-72-6/Growth Hormone

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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