Cyclic AMP in human preterm infant blood is associated with increased TLR-mediated production of acute-phase and anti-inflammatory cytokines in vitro.

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ID: 56721
2019
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Abstract
Preterm infants are at high risk of infection and have distinct pathogen recognition responses. Suggested mechanisms include soluble mediators that enhance cellular levels of cAMP.To assess the relationship between blood cAMP concentrations and TLR-mediated cytokine production in infants during the first month of life.Cord and serial peripheral blood samples (days of life 1-28) were obtained from a cohort of very preterm (<30 weeks' gestational age) and term human infants. Whole-blood concentrations of cAMP and FSL-1 and LPS in vitro stimulated cytokine concentrations were measured by ELISA and multiplex bead assay.cAMP concentrations were higher in cord than in peripheral blood, higher in cord blood of female preterm infants, and lower at Days 1 and 7 in infants exposed to chorioamnionitis, even after adjusting for leukocyte counts. TLR2 and TLR4-mediated TNF-α, IL-1β, IL-6, IL-12p70, and IL-10 production in vitro increased over the first month of life in preterm infants and were positively correlated with leukocyte-adjusted cAMP levels and reduced by exposure to chorioamnionitis.The ontogeny of blood cAMP concentrations and associations with chorioamnionitis and TLR-mediated production of cytokines suggest that this secondary messenger helps shape distinct neonatal pathogen responses in early life.
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strunk2019cyclicpediatric Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Strunk, Tobias;van Haren, Simon D;Hibbert, Julie;Pettengill, Matthew;Ozonoff, Al;Jans, Jop;Schüller, Simone S;Burgner, David;Levy, Ofer;Currie, Andrew J;
Journal Pediatric research
Year 2019
DOI
10.1038/s41390-019-0586-2
URL
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