Comparison of Umbilical Cord and Maternal Serum Levels of IGF-1, Leptin and Cortisol in Appropriate for Gestational Age and Small for Gestational Age Neonates

Z Karamizadeh; S Saki; S Kashef; F Saki

International Journal of Endocrinology and Metabolism

Research Institute for Endocrine Sciences

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Comparison of Umbilical Cord and Maternal Serum Levels of IGF-1, Leptin and Cortisol in Appropriate for Gestational Age and Small for Gestational Age Neonates

Author(s):

Z Karamizadeh^1,*,

S Saki²,

S Kashef²,

F Saki²

1Department of Pediatrics, Shiraz University of Medical Sciences, [email protected], IR.Iran

2Department of Pediatrics, Shiraz University of Medical Sciences, IR.Iran

International Journal of Endocrinology and Metabolism:Vol. 6, issue 2; 89-94

Published online:Apr 30, 2008

Article type:Research Article

Received:Jul 09, 2007

Accepted:Feb 01, 2008

How to Cite:Karamizadeh Z, Saki S, Kashef S, Saki F. Comparison of Umbilical Cord and Maternal Serum Levels of IGF-1, Leptin and Cortisol in Appropriate for Gestational Age and Small for Gestational Age Neonates. Int J Endocrinol Metab. 2008;6(2):. doi:

Abstract

We aim to compare Insulin like Growth Factor (IGF-1), leptin, and cortisol concentrations in maternal and umbilical cord vein and to investi-gate the relationship between these values and fetal growth in appropriate for gestational age (AGA) and small for gestational age (SGA) neo-nates. Materials and Methods: In a case-control study, maternal and umbilical cord venous samples were collected from 25 SGA neonates and 25 AGA neonates in the obstetric ward at Hafez Hospital, Shiraz, Iran, between 2004 and 2005. Serum levels of IGF-1, leptin, and cortisol were measured by specific radioimmunoassay using commercial kits. Results: Mean maternal age was 25.38±5.22 years (range 17-38 yr) and mean gestational age was 37.92±1.79 weeks (range 34-41 weeks). Mean con-centration of leptin and IGF-1 in cord blood was lower in SGA as compared with AGA neonates (p<0.012 and p<0.001, respectively). Maternal se-rum concentration of IGF-1 and cortisol were lower in SGA neonates (p<0.032 and p<0.011, re-spectively), however there was no significant difference in the concentration of maternal leptin levels between the two groups. A correla-tion was observed between the head circumfer-ence of neonate and maternal cortisol levels in the SGA group (p<0.01). Conclusion: Low IGF-1 and leptin concentra-tions in cord blood and low maternal serum con-centration of IGF-1 and cortisol are associated with growth retardation in SGA as compared to AGA neonates. Also maternal cortisol level plays an important role in intrauterine brain de-velopment of SGA neonates.

Keywords

Leptin

Cortisol

IGF-1

Intrauterine growth retardation

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Author(s):

Z Karamizadeh:[PubMed][Scholar]
S Saki:[PubMed][Scholar]
S Kashef:[PubMed][Scholar]
F Saki:[PubMed][Scholar]

Research Institute for Endocrine Sciences

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Comparison of Umbilical Cord and Maternal Serum Levels of IGF-1, Leptin and Cortisol in Appropriate for Gestational Age and Small for Gestational Age Neonates

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