Sex-Dependent Effects of Perinatal Inflammation on the Brain: Implication for Neuro-Psychiatric Disorders

Area of Science:

• Neuroscience
• Developmental Biology
• Immunology

Background:

• Individuals born preterm exhibit elevated risks for neurodevelopmental disorders, including schizophrenia, autistic spectrum disorder, and attention deficit/hyperactivity disorder.
• These disorders often present with sex-dimorphic characteristics and varied developmental paths.
• Infections during pregnancy and early childhood are identified as significant risk factors, potentially interacting with sex hormones and immune responses.

Purpose of the Study:

• To review the sex-dependent effects on brain development under normal conditions and following perinatal inflammation.
• To highlight the role of glia cells in these processes.
• To emphasize how early-life inflammatory reactions may program later neurobehavioral disturbances.

Main Methods:

• Literature review focusing on sex-dependent effects in brain development.
• Analysis of research on glia cell activation and cytokine production.
• Examination of interactions between sex hormones, brain transcriptome, and immune responses.

Main Results:

• Sex influences brain development trajectories and vulnerability to neurodevelopmental disorders.
• Perinatal inflammation can trigger sex-dependent immune activation in the brain.
• Specific brain regions involved in neuropsychiatric disorders show sex-dependent inflammatory responses.

Conclusions:

• Sex-dependent immune activation in the brain is a critical factor in neurodevelopmental outcomes.
• Early-life inflammatory insults can have long-lasting, sex-specific effects on brain function.
• Understanding these sex differences is crucial for developing targeted interventions for neurodevelopmental disorders.