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Insulin-like growth factor 1 associated with altered immune responses in preterm infants and pigs.

Ole BækMartin Bo RasmussenTherese GertsLise AunsholtGitte ZachariassenPer SangildDuc Ninh Nguyen
Published in: Pediatric research (2023)
Supplementation of insulin-like growth factor 1 (IGF-1) to preterm infants has been proposed to promote postnatal growth, but its impact on the developing immune system is largely unknown. In a cohort of very preterm infants, low gestational age and birth weight were the primary predictors of low plasma levels of IGF-1, which in turn were associated with plasma immune markers. Meanwhile, in immature preterm pigs, experimental supplementation of IGF-1 reduced Th1-related immune responses in early life. Supplementation of IGF-1 to preterm infants may affect the developing immune system, which needs consideration when evaluating overall impact on neonatal health.
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