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Related Experiment Video

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Circuit Investigation of Social Interaction and Substance Use Disorder Using Miniscopes.

Nicholas J Beacher1, Kayden A Washington1, Craig T Werner1,2

  • 1Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD, United States.

Frontiers in Neural Circuits
|October 22, 2021
PubMed
Summary

Miniaturized microscopes offer a novel approach to understanding the neural basis of substance use disorder (SUD) and social interaction (SI). This technology can reveal how brain circuits involved in drug cues and social rewards contribute to SUD relapse.

Keywords:
in vivo calcium imaginglongitudinal imagingminiature fluorescence microscopyminiscopesocial interactionsubstance use disorder

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Area of Science:

  • Neuroscience
  • Addiction Research
  • Behavioral Science

Background:

  • Substance use disorder (SUD) is linked to severe health problems and social isolation.
  • Social interventions are key treatments for SUD, yet relapse remains common.
  • Neural circuits encoding drug cues are implicated in SUD relapse, but remain poorly understood.

Purpose of the Study:

  • To explore how miniaturized fluorescence microscopes (miniscopes) can advance the study of neural correlates of social interaction (SI) and SUD.
  • To investigate the shared neurobiology between SI and SUD to explain treatment relapse.
  • To identify cell types and circuits involved in SI and SUD, and monitor neural activity during drug self-administration and social behaviors.

Main Methods:

  • Utilizing miniaturized fluorescence microscopes (miniscopes) with gradient index (GRIN) lenses for deep brain imaging.
  • Employing genetically encoded reporters for cell-type specific neural activity recording.
  • Monitoring unrestrained animal behavior during drug self-administration (SA) and SI.

Main Results:

  • Miniscopes enable detailed imaging of deep brain structures relevant to SUD.
  • Combined with genetic tools, miniscopes allow for cell-type specific analysis of neural circuits.
  • The technology facilitates the study of neural activity during complex social and drug-related behaviors.

Conclusions:

  • Miniscopes are a powerful tool for uncovering the neural underpinnings of SUD and SI.
  • This technology can illuminate the neurobiology of relapse and inform the development of novel therapeutic interventions for SUD.
  • Further research using miniscopes can enhance our understanding of the interplay between social behavior and addiction.