Inflammation-induced sensitization of the brain in term infants

Area of Science:

• Neuroscience
• Perinatal Medicine
• Developmental Pediatrics

Background:

• Perinatal insults are a primary cause of infant mortality.
• Survivors often experience neurocognitive impairment, cerebral palsy (CP), and seizures.
• The origins of perinatal brain injury are complex and multifactorial.

Purpose of the Study:

• To review clinical and experimental evidence on how subinjurious factors sensitize the brain to subsequent injury.
• To explore the mechanisms underlying this sensitization process.
• To discuss potential neuroprotective strategies.

Main Methods:

• Review of clinical data, including maternal and fetal infections in infants with neonatal encephalopathy and CP.
• Examination of preclinical experimental evidence.
• Analysis of existing research on inflammation and hypoxia-ischemia interactions.

Main Results:

• High rates of maternal and fetal infections are observed in term-born infants with neonatal encephalopathy and CP.
• Preclinical studies demonstrate that inflammation sensitizes the brain to injuries like hypoxia-ischemia.
• Evidence suggests a two-hit model exacerbates brain injury cascades.

Conclusions:

• Inflammation plays a critical role in sensitizing the developing brain to injury.
• Understanding these sensitization mechanisms is key to developing neuroprotective interventions.
• Targeting inflammatory pathways may offer a route to prevent or mitigate CP and other neurodevelopmental disorders.