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Updated: Jul 15, 2026

Modeling Encephalopathy of Prematurity Using Prenatal Hypoxia-ischemia with Intra-amniotic Lipopolysaccharide in Rats
Published on: November 20, 2015
Intrauterine T-cell activation and increased proinflammatory cytokine concentrations in preterm infants with cerebral
Insights
Intrauterine infection and inflammation increase the risk of brain injury in very preterm infants. An in utero immune response, indicated by elevated cytokines and T cells, predicts cerebral lesions in newborns.
Area of Science:
- Neonatal neurology
- Immunology
- Perinatal medicine
Background:
- Brain injury is a significant concern in very preterm infants, often linked to intrauterine infections preceding preterm birth.
- This study investigates the connection between fetal exposure to intrauterine antigens/inflammation and the development of cerebral damage.
Discussion:
- Elevated levels of specific cytokines (tumor necrosis factor alpha, interleukins 1beta, 6, and 10) and CD45RO(+) T lymphocytes in umbilical cord blood were associated with cerebral lesions.
- These findings highlight the role of the fetal immune response in the pathogenesis of brain injury.
Key Insights:
- Higher concentrations of inflammatory markers and immune cells in umbilical blood predict early-onset cerebral lesions in preterm infants.
- The fetal immune system's activation in response to intrauterine insults is a critical factor in brain injury risk.
Outlook:
- Further research could explore targeted interventions to modulate the fetal immune response.
- Understanding these mechanisms may lead to strategies for preventing brain damage in high-risk preterm neonates.
Abstract:
Brain injury is common in very preterm infants, and intrauterine infection is a frequent antecedent of preterm birth. We examined the relation of cerebral damage to intrauterine antigen exposure and inflammation in 50 infants who were born at 23-29 weeks' gestation. Higher concentrations of cytokines (tumour necrosis factor alpha [TNF-alpha], and interleukins [IL], 1beta, 6, and 10) and CD45RO(+) T lymphocytes in umbilical blood predicted cerebral lesions detected by magnetic resonance imaging very soon after delivery. Our results suggest that infants who mount an immune response in utero are at higher risk of cerebral lesions.
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