Characterizing brain structural and functional abnormalities in borderline personality disorder by seed-based d...

Area of Science:

• Neuroscience
• Psychiatry
• Medical Imaging

Background:

• Borderline personality disorder (BPD) presents with significant instability in mood, relationships, and self-image.
• Neurobiological underpinnings of BPD are complex, with prior neuroimaging studies showing inconsistent findings, especially regarding amygdala volume.
• Abnormalities extend beyond the amygdala to regions like the prefrontal cortex, hippocampus, and insula, affecting emotion regulation and impulse control.

Purpose of the Study:

• To systematically investigate and summarize characteristic brain structural and functional changes in BPD patients compared to healthy controls.
• To integrate findings from multiple neuroimaging modalities to provide a comprehensive overview of BPD neurobiology.

Main Methods:

• A systematic literature search was performed to identify relevant neuroimaging studies comparing BPD patients and healthy controls.
• Coordinate-based meta-analysis (CBMA) using seed-based d mapping (SDM) software was employed to analyze structural and functional data.
• Four neuroimaging modalities were integrated: diffusion tensor imaging (DTI), structural MRI (sMRI), fMRI, and resting-state fMRI (rs-fMRI).

Main Results:

• The meta-analysis included 26 studies, integrating data from DTI, sMRI, fMRI, and rs-fMRI.
• Results indicated widespread structural and functional dysregulation within the frontolimbic system in BPD patients.
• Key affected regions are involved in emotion regulation, self-cognition, and impulse control.

Conclusions:

• The neurobiological basis of BPD is characterized by frontolimbic system dysregulation.
• These widespread brain alterations provide a foundation for the core symptoms of BPD, including impaired emotion regulation and impulse control.
• This meta-analysis offers a consolidated view of brain changes associated with BPD across various neuroimaging techniques.