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Circulating interferon-gamma and white matter brain damage in preterm infants
Ingrid Hansen-Pupp1, Solveig Harling, Ann-Cathrine Berg
1Department of Pediatrics, Lund University Hospital, 221 85 Lund, Sweden. ingrid.pupp@skane.se
Pediatric Research
|September 27, 2005
Summary
The fetal inflammatory response, particularly elevated interferon-gamma (IFN-gamma) after birth, is linked to white matter brain damage in premature infants. Premature rupture of membranes also correlates with specific inflammatory cytokine patterns.
Area of Science:
- Neonatal immunology
- Perinatal medicine
- Inflammatory response
Background:
- The fetal inflammatory response is implicated in neonatal morbidity.
- Understanding cytokine profiles in premature infants is crucial for predicting outcomes.
Purpose of the Study:
- To evaluate serial circulating cytokine levels in premature infants.
- To correlate cytokine profiles with neonatal morbidities such as white matter brain damage (WMD), intraventricular hemorrhage (IVH), and arterial hypotension.
Main Methods:
- Serial cytokine levels (pro-inflammatory and modulatory) were measured in 74 infants (mean GA 27.1 wk) from cord blood up to 72 hours postnatal.
- Area under the curve (AUC) assessed cytokine burden over time.
- Associations between cytokine levels and morbidities (PROM, WMD, IVH, hypotension) were analyzed.
Main Results:
- Premature rupture of membranes (PROM) associated with increased IL-2, IFN-gamma, and TNF-alpha.
- Elevated postnatal IFN-gamma levels correlated with white matter brain damage (WMD) (OR, 26.0).
- Severe intraventricular hemorrhage (IVH) linked to increased IL-6 and IL-8 AUC (OR, 2.8 and 13.2).
- Arterial hypotension associated with increased IL-6.
Conclusions:
- A fetal immune response, indicated by elevated postnatal IFN-gamma, is associated with WMD development.
- PROM is linked to a T-helper 1 cytokine response.
- The type of inflammatory response is critical for subsequent neonatal morbidity.