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Noninvasive Sampling of Mucosal Lining Fluid for the Quantification of In Vivo Upper Airway Immune-mediator Levels
Published on: August 7, 2017
Inflammatory and growth mediators in growing preterm infants
Irfan Ahmad1, Frank Zaldivar, Kensho Iwanaga
1Pediatric Exercise Research Center, Department of Pediatrics, University Children's Hospital, University of California Irvine, Orange, CA 92868, USA.
Journal of Pediatric Endocrinology & Metabolism : JPEM
|April 25, 2007
Summary
Optimal growth in preterm infants involves balancing insulin-like growth factor-I (IGF-I) with inflammatory mediators like interleukin-6 (IL-6). This study found IGF-I increased while IL-6 decreased during postnatal growth.
Area of Science:
- Neonatal physiology
- Pediatric endocrinology
- Inflammatory response
Background:
- Optimal balance of growth and inflammatory mediators is crucial for preterm infant development.
- Limited understanding exists regarding the interplay between Insulin-like Growth Factor-I (IGF-I) and inflammatory markers like Interleukin-6 (IL-6) in growing preterm infants.
Purpose of the Study:
- To investigate the relationship between postnatal growth and key growth/inflammatory mediators in preterm infants.
- To explore the balance between anabolic activity (IGF-I, GHBP) and inflammatory status (IL-6, IL-1ra) during early infant development.
Main Methods:
- Prospective cohort study of 51 stable, growing preterm infants.
- Measurement of IGF-I, Growth Hormone Binding Protein (GHBP), IL-6, and IL-1 receptor antagonist (IL-1ra) via ELISA at enrollment and discharge.
- Analysis of correlations between mediator levels and growth parameters using multiple regression models.
Main Results:
- Significant increases in weight, IGF-I, and GHBP were observed during the study period.
- Concurrently, significant decreases in IL-6 and IL-1ra levels were noted.
- IL-6 showed an inverse correlation with IGF-I, and both were significantly associated with growth parameters.
Conclusions:
- Postnatal growth in preterm infants is associated with increased IGF-I and GHBP, alongside decreased IL-6 and IL-1ra.
- Optimizing the balance of inflammatory and growth mediators may enhance somatic growth in very preterm infants.
- Further research into modulating these mediators could improve outcomes for high-risk infants.
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