Brain Connectivity of the Cingulate Cortex in Alcohol Use Disorder: Exploring Its Association With Mindfulness

Area of Science:

• Neuroscience
• Psychiatry
• Mental Health

Background:

• Alcohol use disorder (AUD) involves dysregulated brain circuits affecting reward, motivation, and stress.
• Mindfulness interventions show promise in managing AUD by improving self-efficacy and abstinence rates.
• The cingulum bundle (CB) connects key brain networks implicated in mindfulness and executive functions.

Purpose of the Study:

• To investigate the structural and functional integrity of the cingulum bundle (CB) in patients with AUD.
• To explore the relationship between CB connectivity, mindfulness, and abstinence-related self-efficacy in AUD.
• To determine if CB alterations are associated with reduced mindfulness and self-efficacy in AUD patients.

Main Methods:

• Recruited 39 recently abstinent inpatients with AUD and 18 healthy controls.
• Assessed mindfulness and self-efficacy using validated self-report questionnaires.
• Acquired structural and resting-state functional MRI data to analyze CB connectivity.

Main Results:

• AUD patients exhibited reduced structural and functional connectivity in the CB compared to controls.
• Structural and functional CB connectivity showed a strong positive association in AUD patients.
• Mindfulness strongly correlated with abstinence-related self-efficacy; exploratory analysis linked CB streamline number to specific mindfulness facets and self-efficacy.

Conclusions:

• This study provides the first evidence of structural and functional cingulum bundle impairments in patients with AUD.
• Alterations in CB connectivity may underlie reduced mindfulness and self-efficacy, impacting recovery from alcohol use disorder.
• Findings highlight the CB as a potential neurobiological target for AUD treatment interventions.