Gray matter abnormalities in patients with premenstrual dysphoric disorder: an optimized voxel-based morphometry

Area of Science:

• Neuroimaging
• Neuroscience
• Psychiatry

Background:

• Premenstrual dysphoric disorder (PMDD) is associated with neurochemical changes, but neuroimaging studies are limited.
• Investigating structural brain differences in women with PMDD is crucial for understanding the disorder's pathophysiology.

Purpose of the Study:

• To compare gray matter (GM) density in women with PMDD versus healthy controls.
• To explore the relationship between GM density and PMDD symptom severity.

Main Methods:

• Utilized 3.0T MRI scans for 15 women with PMDD and 15 healthy controls.
• Employed optimized voxel-based morphometry (VBM) for analyzing GM density differences.
• Conducted regression analysis to correlate GM density with PMDD symptom severity.

Main Results:

• Significantly increased GM density in the hippocampal cortex of women with PMDD.
• Significantly decreased GM density in the parahippocampal cortex of women with PMDD.
• No significant association found between observed GM abnormalities and PMDD symptom severity.

Conclusions:

• Gray matter abnormalities in limbic and paralimbic cortices are associated with PMDD pathophysiology.
• Findings suggest PMDD etiology may involve emotional processing and self-regulation deficits.
• The study provides a neurobiological basis for understanding PMDD.