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  • Title: Prenatal and postnatal inflammation in relation to cortisol levels in preterm infants at 18 months corrected age.
    Author: Gover A, Chau V, Miller SP, Brant R, McFadden DE, Poskitt KJ, Synnes A, Weinberg J, Grunau RE.
    Journal: J Perinatol; 2013 Aug; 33(8):647-51. PubMed ID: 23558431.
    Abstract:
    OBJECTIVE: To examine whether early inflammation is related to cortisol levels at 18 months corrected age (CA) in children born very preterm. STUDY DESIGN: Infants born ≤ 32 weeks of gestational age were recruited in the neonatal intensive care unit (NICU), and placental histopathology, magnetic resonance imaging (MRI) and chart review were obtained. At 18 months CA, developmental assessment and collection of three salivary cortisol samples were carried out. Generalized least squares was used to analyze data from 85 infants providing 222 cortisol samples. RESULT: Infants exposed to chorioamnionitis with funisitis had a significantly different pattern of cortisol across the samples compared with infants with chorioamnionitis alone or no prenatal inflammation (F(4, 139)=7.3996, P<0.0001). Postnatal infections, necrotizing enterocolitis and chronic lung disease were not significantly associated with the cortisol pattern at 18 months CA. CONCLUSION: In children born very preterm, prenatal inflammatory stress may contribute to altered programming of the hypothalamic-pituitary-adrenal (HPA) axis.
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