Animal models in addiction research: A dimensional approach

Area of Science:

• Neuroscience
• Psychiatry
• Addiction Research

Background:

• Current diagnostic systems for drug addiction, like DSM-5, focus on outcomes, hindering effective treatment and prevention.
• Rising addiction rates necessitate novel approaches beyond traditional diagnostic criteria.

Purpose of the Study:

• To review the utility of the dimensional Research Domain Criteria (RDoC) framework for addiction research.
• To explore how RDoC can inform the development of preclinical animal models and investigate addiction's biological underpinnings.
• To highlight the role of animal research in refining the RDoC matrix and advancing addiction theories and treatments.

Main Methods:

• Review of existing literature on RDoC and addiction.
• Discussion of RDoC paradigms relevant to the addiction cycle (binge/intoxication, negative affect, craving).
• Examination of the contribution of animal research to RDoC framework development and addiction treatment.

Main Results:

• The RDoC framework provides a process-based, dimensional approach superior to outcome-based systems for studying addiction.
• RDoC paradigms facilitate the investigation of biological mechanisms underlying addiction stages.
• Animal research is crucial for validating and expanding the RDoC matrix and informing addiction theories.

Conclusions:

• Adopting a dimensional framework like RDoC is essential for advancing addiction research and treatment.
• Preclinical research within the RDoC framework can identify vulnerability and protective mechanisms.
• Animal models informed by RDoC contribute significantly to developing novel pharmacological and behavioral addiction therapies.