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Related Experiment Video

Updated: May 18, 2026

Using Optogenetics to Reverse Neuroplasticity and Inhibit Cocaine Seeking in Rats

Using Optogenetics to Reverse Neuroplasticity and Inhibit Cocaine Seeking in Rats

Published on: October 5, 2021

mGluR-Dependent Synaptic Plasticity in Drug-Seeking.

Camilla Bellone¹, Manuel Mameli

¹Department of Basic Neuroscience, University of Geneva Geneva, Switzerland.

Frontiers in Pharmacology

|September 13, 2012

Summary

Addictive substances hijack brain circuits, altering synaptic plasticity and leading to compulsive drug use. Metabotropic glutamate receptors (mGluRs) play a key role in these changes and may offer a strategy to restore normal brain function.

Keywords:

AMPA receptors NMDA receptor addiction long-term depression mGluR synaptic plasticity

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Last Updated: May 18, 2026

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Area of Science:

Neuroscience
Molecular Biology
Pharmacology

Background:

Drug addiction is characterized by compulsive substance use despite adverse outcomes.
Addictive drugs impact synaptic transmission and plasticity in brain reward circuits.
Neuroadaptations in learning and memory are hypothesized to drive addictive behaviors.

Purpose of the Study:

To explore the role of metabotropic glutamate receptors (mGluRs) in drug-evoked synaptic plasticity.
To review cellular mechanisms of mGluR-dependent synaptic changes.
To discuss mGluRs as a potential therapeutic target for addiction.

Main Methods:

Review of existing literature on mGluRs and synaptic plasticity in addiction.
Focus on cellular mechanisms of long-term changes in excitatory synapses.
Analysis of studies implicating mGluRs in drug-evoked plasticity.

Main Results:

mGluRs modulate synaptic transmission and are implicated in drug-evoked plasticity.
Drug experience can impair mGluR-dependent synaptic modulation.
mGluR activation may restore synaptic function disrupted by drug use.

Conclusions:

mGluRs are crucial in the neuroadaptations underlying addiction.
Understanding mGluR-dependent plasticity is key to developing addiction treatments.
Targeting mGluRs offers a promising avenue for restoring normal synaptic function.