Hormone Research in Paediatrics

Original Paper

Expression and Protein Content of IGF-I and IGF-I Receptor in Placentas from Small, Adequate and Large for Gestational Age Newborns

Iñiguez G. · González C.A. · Argandoña F. · Kakarieka E. · Johnson M.C. · Cassorla F.

Author affiliations

Institute of Maternal and Child Research, and Hospital Clínico San Borja-Arriarán, University of Chile, Santiago, Chile

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Horm Res Paediatr 2010;73:320–327

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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: March 16, 2009
Accepted: June 20, 2009
Published online: April 14, 2010
Issue release date: April 2010

Number of Print Pages: 8
Number of Figures: 2
Number of Tables: 2

ISSN: 1663-2818 (Print)
eISSN: 1663-2826 (Online)

For additional information: https://www.karger.com/HRP

Abstract

In humans, a direct relationship between IGF-I cord blood levels and birth weight has been demonstrated. To determine the placental IGF-I, IGF-II and IGF-IR mRNA and protein contents in full-term pregnancies from appropriate for gestational age (AGA), small for gestational age (SGA) and large for gestational age (LGA) newborns, we studied the placentas from 35 AGA, 30 SGA and 28 LGA pregnancies. The IGF-I, IGF-II and IGF-I receptor (IGF-IR) placental mRNA and protein contents were determined in the basal and chorionic plates of the placenta. IGF1 and IGF1R mRNA was higher in SGA compared to AGA and LGA placentas and lower in LGA compared with AGA placentas. In addition, a higher protein content of IGF-I and IGF-IR was observed in SGA compared with AGA and LGA placentas and lower contents in LGA compared with AGA placentas. These results suggest that the higher IGF-I and IGF-IR contents observed in SGA placentas and the lower contents observed in LGA placentas compared with AGA placentas may be influencing human fetal growth.

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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: March 16, 2009
Accepted: June 20, 2009
Published online: April 14, 2010
Issue release date: April 2010

Number of Print Pages: 8
Number of Figures: 2
Number of Tables: 2

ISSN: 1663-2818 (Print)
eISSN: 1663-2826 (Online)

For additional information: https://www.karger.com/HRP


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