Cocaine Destroys Gray Matter Brain Cells and Accelerates Brain Aging

Area of Science:

• Neuroscience
• Radiology
• Addiction Medicine

Background:

• Cocaine use disorder (CUD) is a complex condition with significant public health implications.
• The neurobiological underpinnings of CUD, particularly structural brain alterations and their link to accelerated brain aging, remain incompletely understood.

Purpose of the Study:

• To investigate anatomical brain changes in individuals with CUD compared to healthy controls.
• To explore whether these anatomical abnormalities contribute to accelerated brain aging in CUD patients.

Main Methods:

• Utilized anatomical magnetic resonance imaging (MRI) data from 74 CUD patients and 62 healthy controls.
• Employed voxel-based morphometry (VBM) and deformation-based morphometry to identify morphological brain changes.
• Calculated brain-predicted age difference (brain-PAD) and analyzed regional gray matter (GM) and white matter (WM) changes associated with brain-PAD.

Main Results:

• Observed widespread GM atrophy in CUD patients across temporal, frontal, insula, and limbic lobe regions.
• Found a significantly higher brain-PAD in CUD patients (mean difference = 2.62 years, p = 0.002).
• Identified significant negative correlations between GM volume and brain-PAD in limbic and cingulate regions in the CUD group.

Conclusions:

• Chronic cocaine use is associated with significant gray matter changes, leading to accelerated structural brain aging.
• These findings highlight the detrimental impact of cocaine on brain structure and aging processes.