Innovative Medical Treatments for Addiction

Understanding the Scope of Addiction

In the United States, nearly 20 million adults grapple with addiction to drugs or alcohol. Addiction is recognized as a chronic relapsing disorder, with relapse prevention being a primary objective of treatment. Despite extensive research into the neuro-behavioral triggers of relapse, effective medical solutions remain elusive. Current options, including anti-relapsing medications and psychosocial therapies, have shown limited success in clinical settings.

New Research Approach

A recent study published in *Nature Communications* introduces a novel perspective on addressing the neuro-behavioral aspects of drug addiction. Instead of focusing on factors that encourage relapse, researchers aimed to identify elements that suppress drug cravings to avert relapse.

Methodology of the Study

The research team developed an omission cue-induced suppression (OCIS) procedure utilizing male rat models that were conditioned to become compulsive users of cocaine or alcohol. The study examined the rats’ responses to “omission cues,” which are environmental signals indicating that drugs are unavailable. Findings revealed that these cues effectively suppressed the factors that typically trigger relapse, indicating a shared learning mechanism for drug-seeking behaviors related to both cocaine and alcohol.

Insights into Brain Mechanisms

Further investigation focused on the brain mechanisms linked to these “anti-relapse” behaviors. The researchers identified that brain cells in the infralimbic cortex, a region associated with impulse control, play a crucial role in the learned behaviors that suppress relapse in the rat subjects. The results illustrate that specific brain cells responding to omission cues collaborate to influence behavior and mitigate the risk of drug relapse.

Future Research Directions

The study lays the groundwork for ongoing research aimed at enhancing our understanding of addiction treatment. The research team is optimistic that continued exploration will pave the way for effective medical interventions for addiction.

About the Author

Written by Maggie Leung, PharmD.

References

Laque, A., Ness, G. L. D., Wagner, G. E., Nedelescu, H., Carroll, A., Watry, D., … Suto, N. (2019). Anti-relapse neurons in the infralimbic cortex of rats drive relapse-suppression by drug omission cues. *Nature Communications*, 10(1). doi: 10.1038/s41467-019-11799-1. (2019, September 9). Brain cells that suppress drug cravings may be the secret to better addiction medicines. Retrieved from https://www.eurekalert.org/pub_releases/2019-09/sri-bct090919.php.

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