Structural and functional brain network alterations in prenatal alcohol exposed neonates.

Area of Science:

• Neuroscience
• Developmental Psychology
• Medical Imaging

Background:

• Prenatal alcohol exposure (PAE) is linked to cognitive and behavioral deficits.
• Previous research has not integrated structural and functional brain imaging in infants with PAE.
• Understanding early brain alterations is crucial for intervention.

Purpose of the Study:

• To investigate disruptions in structural and functional brain network organization in neonates with PAE.
• To compare brain network organization between exposed and unexposed neonates.
• To identify early neural markers associated with PAE.

Main Methods:

• Used diffusion weighted imaging (DWI) and resting-state functional magnetic resonance imaging (rs-fMRI).
• Analyzed structural and functional covariance networks using graph theory.
• Compared global and regional network organization between 11 neonates with PAE and 14 controls.

Main Results:

• Global structural network organization was similar between groups.
• Functional networks in neonates with PAE showed temporal and limbic hubs, unlike controls' distributed hubs.
• Regional analysis revealed distinct structural and functional connectivity patterns in subcortical and occipital regions for the PAE group.

Conclusions:

• Prenatal alcohol exposure causes early, global, and regional functional brain network disruptions.
• Suboptimal functional network organization in neonates with PAE may underlie sensory and behavioral issues.
• Early identification of these network differences is vital for addressing PAE consequences.