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Infections and Brain Development.

Christina N Cordeiro1, Michael Tsimis2, Irina Burd3

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Summary
This summary is machine-generated.

Maternal infections during pregnancy can impact fetal brain development, potentially leading to neurodevelopmental disorders like autism and cerebral palsy. This link is supported by evidence of inflammation and structural brain changes.

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Immunology

Background:

  • Maternal infections during pregnancy are increasingly linked to adverse neurodevelopmental outcomes in offspring.
  • Specific infections like influenza and HIV have been associated with autism spectrum disorders, cognitive deficits, and bipolar disorder.
  • Prenatal infections can trigger inflammatory responses, affecting fetal brain structure and function.

Purpose of the Study:

  • To synthesize evidence linking maternal infection and inflammation during gestation to altered fetal brain development.
  • To explore the role of inflammatory pathways and cytokine balance in mediating these effects.
  • To highlight the time-sensitive nature of prenatal insults on neurodevelopment.

Main Methods:

  • Review of epidemiological and retrospective studies examining maternal infections and neurodevelopmental outcomes.
  • Analysis of animal models investigating the impact of prenatal inflammation on brain development.
  • Examination of biomarkers and histological evidence of intrauterine infection and inflammation.

Main Results:

  • Maternal infections are associated with fetal brain anomalies (e.g., calcifications, hydrocephalus) and increased risk for autism, schizophrenia, and bipolar disorder.
  • Inflammatory pathways activated by infection lead to elevated proinflammatory cytokines, correlated with cerebral palsy and autism.
  • Chorioamnionitis and funisitis are linked to cerebral palsy and other adverse neurodevelopmental outcomes.

Conclusions:

  • A substantial body of evidence suggests maternal infection and inflammation during critical fetal development periods can alter brain structure and function.
  • The balance of pro- and anti-inflammatory cytokines is crucial for normal neurodevelopment.
  • Prenatal insults from infection and inflammation represent a significant risk factor for various neurodevelopmental disorders.