Document Detail


Size at birth and cord blood levels of insulin, insulin-like growth factor I (IGF-I), IGF-II, IGF-binding protein-1 (IGFBP-1), IGFBP-3, and the soluble IGF-II/mannose-6-phosphate receptor in term human infants. The ALSPAC Study Team. Avon Longitudinal Study of Pregnancy and Childhood.
MedLine Citation:
PMID:  11095465     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Experimental rodent studies demonstrate that insulin-like growth factor II (IGF-II) promotes fetal growth, whereas the nonsignaling IGF-II receptor (IGF2R) is inhibitory; in humans their influence is as yet unclear. A soluble, circulating form of IGF2R inhibits IGF-II mediated DNA synthesis and may therefore restrain fetal growth. We measured cord blood levels of IGF-II, soluble IGF2R, insulin, IGF-I, IGF-binding protein-1 (IGFBP-1), and IGFBP-3 and examined their relationships to weight, length, head circumference, ponderal index, and placental weight at birth in 199 normal term singletons. IGF-II levels correlated with levels of IGF-I (r = 0.29; P < 0.0005), IGFBP-3 (r = 0.45; P < 0.0005), and soluble IGF2R (r = 0.20; P < 0.005). Insulin and IGF-I were positively related to all parameters of size at birth. IGF-II was weakly related to ponderal index (r = 0.18; P < 0.05) and placental weight (r = 0.18; P < 0.05), and the molar ratio of IGF-II to IGF2R was also related to birth weight (r = 0.15; P < 0.05). Correlations between the IGFs and size at birth were stronger in nonprimiparous pregnancies; in these, IGF-I (r = 0.52; P < 0.0005), IGFBP-3 (r = 0.41; P < 0.0005), and the IGF-II to IGF2R ratio (r = 0.40; P < 0.0005) were most closely related to placental weight, together accounting for 39% of its variance. We demonstrate for the first time relationships between circulating IGF-II and soluble IGF2R levels and size at birth, supporting their putative opposing roles in human fetal growth.
Authors:
K Ong; J Kratzsch; W Kiess; M Costello; C Scott; D Dunger
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of clinical endocrinology and metabolism     Volume:  85     ISSN:  0021-972X     ISO Abbreviation:  J. Clin. Endocrinol. Metab.     Publication Date:  2000 Nov 
Date Detail:
Created Date:  2000-11-29     Completed Date:  2000-12-14     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0375362     Medline TA:  J Clin Endocrinol Metab     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  4266-9     Citation Subset:  AIM; IM    
Affiliation:
Department of Paediatrics, University of Cambridge, Addenbrookes Hospital, United Kingdom.
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MeSH Terms
Descriptor/Qualifier:
Body Constitution*
Cohort Studies
Female
Fetal Blood / chemistry*
Human Growth Hormone / blood
Humans
Infant, Newborn*
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*
Male
Placenta
Pregnancy
Receptor, IGF Type 2 / blood*
Reference Values
Regression Analysis
Chemical
Reg. No./Substance:
0/Insulin-Like Growth Factor Binding Protein 1; 0/Insulin-Like Growth Factor Binding Protein 3; 0/Receptor, IGF Type 2; 11061-68-0/Insulin; 12629-01-5/Human Growth Hormone; 67763-96-6/Insulin-Like Growth Factor I; 67763-97-7/Insulin-Like Growth Factor II

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


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