Brain activity surge in mice after alcohol abstinence may signal relapse risk

Scientists examined how prolonged voluntary alcohol exposure followed by a period of forced abstinence affected mouse behavior. A subset of the abstinent mice began drinking alcohol despite added quinine, consuming larger volumes of the bitter solution than mice without abstinence. Monitoring revealed that attempts to drink, even when only water was present, coincided with markedly increased activity in the bed nucleus of the stria terminalis (BNST), a region linked to anxiety and addiction.

This BNST activation was more than twice that of non-abstinent mice and emerged before alcohol access, indicating it could serve as a predictive biomarker for relapse. The study underscores challenges of abstinence-based treatment and suggests future clinical screening of BNST activity. Ongoing work includes manipulating specific BNST neurons in mice and investigating BNST signals in early-abstinent humans.