CSF cytokine levels in preterm infants may reflect systemic inflammation and are independent of gestation.

Abstract:

BACKGROUND:Among preterm infants, high concentrations of inflammatory mediators in cerebrospinal fluid (CSF) are associated with poor outcome. Previous studies have not indicated whether CSF concentrations of inflammatory mediators are associated with important confounders such as gestational age. AIMS:To examine associations between CSF concentrations of inflammatory mediators and gestational age, maternal features suggestive of inflammation, characteristics of the CSF sample or the presence of a systemic inflammatory response. STUDY DESIGN AND SUBJECTS:Aliquots of CSF obtained during routine investigation of potential sepsis among infants born before 35 weeks gestation were assayed for 17 mediators of inflammation using a fluorescent multi-bead analyser. Other information was collected from routine clinical records. RESULTS:39 infants were assessed. CSF levels of mediators of inflammation were not correlated with gestational age. CSF red blood cell counts were correlated with CSF concentrations of IL-6, GM-CSF and IL-17 (each p<0.003). CSF lactate was correlated with CSF concentrations of IL-1beta, IL-6, GM-CSF, G-CSF, IFN-gamma and MIP-1beta. CSF concentrations of IL-1beta, IL-6, G-CSF, TNF-alpha and IFN-gamma were higher in infants with a raised CRP within 24 h of delivery (each p<0.003). CONCLUSIONS:CSF concentrations of inflammatory mediators most probably reflect inflammatory pathologies and are not influenced by gestational age. They may also, however, reflect contamination with blood or systemic inflammation. CSF concentrations of inflammatory mediators may not provide a specific indicator of CNS inflammation.

journal_name

Early Hum Dev

journal_title

Early human development

authors

Turner MA,Drury JA,Carlin A,O'Neill S,Pilling D,Barnes N,Balmer P,Newland P,Clark S,Kissack CM,Subhedar NV

doi

10.1016/j.earlhumdev.2008.10.011

subject

Has Abstract

pub_date

2009-04-01 00:00:00

pages

259-62

issue

4

eissn

0378-3782

issn

1872-6232

pii

S0378-3782(08)00620-8

journal_volume

85

pub_type

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