Neural Underpinnings of Social Stress in Substance Use Disorders.
Level 4 - case-series / case-control
Systematic review of observational and cross-sectional neuroimaging studies.
PubMed 34971448 · doi:10.1007/7854_2021_272
What was done
Authors conducted a systematic review of 21 in vivo structural and functional neuroimaging studies examining the neural correlates of social stress in individuals with substance use disorders. The review evaluated neural changes associated with chronic historical social stress (such as childhood maltreatment) as well as acute social stress induced during neuroimaging paradigms across drug classes and lifespan stages.
What was found
The abstract reports qualitative synthesis across 21 studies without providing quantitative effect sizes or aggregate participant numbers: - Brain regions altered in individuals exposed to chronic social stress and acute stress induction overlap with addiction networks, including the prefrontal cortex, insula, hippocampus, and amygdala. - Individuals with childhood maltreatment and substance use history showed decreased gray matter or reduced activation in executive functioning regions (medial prefrontal cortex, orbitofrontal cortex, anterior cingulate cortex), the hippocampal complex, and the supplementary motor area. - Acute stress-induction paradigms most commonly triggered activation in the anterior cingulate cortex, caudate, and amygdala.
Why it matters
This review highlights shared neural circuitry between social stress processing and addiction networks, pinpointing key corticolimbic structures involved in craving and relapse. These shared pathways help guide future research into trauma-informed interventions for substance use disorders.
Limits
The abstract provides no quantitative metrics or total sample size across the 21 included studies. The underlying neuroimaging studies are cross-sectional and observational, preventing causal distinction between the independent neural impacts of social stress versus substance-induced neurotoxicity.
Cited by
- supports Addiction relapse is most likely to occur during periods of stress, such as interpersonal conflict or sleep deprivation.