Abstract
Objectives
Determine if chronologic age and/or chorioamnionitis exposure alter normal serum cytokine and chemokine levels in uninfected preterm neonates during their initial NICU stay.
Study design
A 7-plex immunoassay measured levels of serum IL-1β, IL-6, IL-8, IL-10, TNF-α, CCL2, and CCL3 longitudinally from chorioamnionitis-exposed and unexposed preterm neonates under 33 weeks’ gestation.
Results
Chorioamnionitis-exposed and unexposed preterm neonates demonstrated differences in the trends of IL-1β, IL-6, IL-8, IL-10, TNF-α, and CCL2 over the first month of life. The unexposed neonates demonstrated elevated levels of these inflammatory markers in the first two weeks of life with a decrease by the third week of life, while the chorioamnionitis-exposed neonates demonstrated differences over time without a predictable pattern. Chorioamnionitis-exposed and unexposed neonates demonstrated altered IL-10 and TNF-α trajectories over the first twelve weeks of life.
Conclusion
Chorioamnionitis induces a state of immune dysregulation in preterm neonates that persists beyond the immediate neonatal period.
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Funding
This project was funded through philanthropic funds from the Korneffel family and by the National Institute of Allergy and Infectious Diseases at the National Institutes of Health AI141673.
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GES made substantial contributions to the acquisition, analysis and interpretation of the data and wrote the initial draft of the manuscript. CAC and KLM made substantial contributions to the acquisition, analysis and interpretation of the data and critically revised the manuscript. JMS made substantial contributions to the analysis and interpretation of the data and critically revised the manuscript. LAE made substantial contributions to the design of the work, analysis and interpretation of the data and critically revised the manuscript. RCB and JRB made substantial contributions to the conceptualization and design of the work, acquisition, analysis and interpretation of the data and critically revised the manuscript.
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Stepanovich, G.E., Chapman, C.A., Meserve, K.L. et al. Chorioamnionitis-exposure alters serum cytokine trends in premature neonates. J Perinatol 43, 758–765 (2023). https://doi.org/10.1038/s41372-022-01584-2
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DOI: https://doi.org/10.1038/s41372-022-01584-2