Body Mass Index Impacts on Gray Matter Volume in Developmental Restrictive Anorexia Nervosa: A Voxel-Based...

Area of Science:

• Neuroscience
• Developmental Psychology
• Radiology

Background:

• Previous magnetic resonance imaging (MRI) studies indicate brain alterations in anorexia nervosa restricting type (AN-R).
• Limited structural neuroimaging research exists for AN-R during developmental/adolescent ages.

Purpose of the Study:

• To analyze volumetric brain differences between adolescent AN-R patients and typically developing controls.
• To investigate correlations between altered brain volumes and clinical/psychopathological features in AN-R.

Main Methods:

• Structural MRI scans were acquired from 47 adolescent females with AN-R and 39 controls.
• Voxel-based morphometry (VBM) was employed to detect significant volumetric brain differences.
• Clinical data including body mass index (BMI) and disease duration were collected.

Main Results:

• AN-R patients exhibited reduced gray matter (GM) volume and increased cerebrospinal fluid (CSF) compared to controls.
• These GM and CSF alterations correlated significantly with lower BMI.
• Reduced GM volume was prominent in frontal and parietal regions, associated with AN-R cognitive processes.

Conclusions:

• Findings contribute to understanding the pathophysiology of AN-R in adolescents.
• Identified brain alterations may serve as potential imaging biomarkers for AN during developmental ages.