Neonatal adiposity increases with rising cord blood IGF-1 levels

Rachel Kadakia*, Madeleine Ma, Jami L. Josefson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Objective Infants with higher adiposity at birth may be at greater risk of developing obesity later in life. IGF-1 is important for intrauterine growth and may be a useful early life marker of adiposity, and thus later obesity risk. The aim of this study was to determine the relationship between cord blood IGF-1, neonatal anthropometrics and markers of neonatal adiposity. Design, Patients and Measurements A cross-sectional study design was utilized to study a multiethnic cohort of full-term neonates born to healthy mothers with normal glucose tolerance at a large university hospital. Neonatal cord blood was collected after birth and assayed for IGF-1, leptin and C-peptide. Neonatal body composition was measured between 24 and 72 h of life using the method of air displacement plethysmography. Results Cord blood IGF-1 was positively and significantly associated with markers of neonatal adiposity in models adjusted for maternal age at delivery, race, maternal prepregnancy BMI, gestational age at delivery and neonatal sex: birthweight (r = 0·62, P < 0·001), leptin (r = 0·33, P = 0·018), fat mass (r = 0·52, P < 0·001) and percent body fat (r = 0·51, P < 0·001). Cord blood IGF-1 was not associated with cord blood C-peptide. Conclusions Cord blood IGF-1 is strongly associated with all measures of neonatal adiposity suggesting that IGF-1 may be an important contributor to in utero neonatal fat accumulation.

Original languageEnglish (US)
Pages (from-to)70-75
Number of pages6
JournalClinical Endocrinology
Volume85
Issue number1
DOIs
StatePublished - Jul 1 2016

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Endocrinology

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