Insulin-like growth factor-1 and insulin-like growth factor binding protein-3 as early predictors of growth, body

Megan E Paulsen1,2,3, Nicholas Marka4, Scott Lunos4

  • 1Division of Neonatology, Department of Pediatrics, University of Minnesota Medical School, Minneapolis, MN, USA. megan.paulsen@childrensmn.org.

Insights

Early insulin-like growth factor binding protein 3 (IGFBP-3) levels in preterm infants correlate with better neurodevelopment. Insulin-like growth factor 1 (IGF-1) is linked to improved growth outcomes.

Area of Science:

  • Neonatal Research
  • Endocrinology
  • Developmental Pediatrics

Background:

  • Preterm infants face risks for impaired growth, body composition, and neurodevelopment.
  • Insulin-like growth factor 1 (IGF-1) and IGF binding protein 3 (IGFBP-3) are crucial for fetal and postnatal development.
  • Understanding their role in preterm infants is vital for optimizing long-term outcomes.

Purpose of the Study:

  • To examine the association between IGF-1, IGFBP-3 levels and growth, body composition, and neurodevelopment in preterm infants.
  • To identify potential early biomarkers for predicting long-term outcomes in this vulnerable population.

Main Methods:

  • Prospective cohort study of 50 infants born at or before 32 weeks gestational age.
  • Measurement of IGF-1 and IGFBP-3 at 1 week (early) and 35 weeks (late) post-menstrual age (PMA).
  • Assessment of growth, body composition, and neurodevelopment at 4 and 12 months PMA using linear regression analysis.

Main Results:

  • Early IGFBP-3 concentrations positively correlated with neurodevelopment at 12 months PMA.
  • Early IGF-1 concentrations were associated with increased weight at 4 months PMA, head circumference at 12 months PMA, and body mass index at 12 months PMA.
  • Late IGFBP-3 concentrations showed a positive association with weight at 4 months PMA.

Conclusions:

  • Early IGF-1 and IGFBP-3 levels may serve as predictive biomarkers for growth and neurodevelopmental outcomes in preterm infants.
  • These findings suggest potential targets for therapeutic interventions to improve health in preterm populations.
  • Further research is warranted to explore these associations for novel biomarker and treatment development.
Abstract

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