Cited by 55Neurotransmitter Receptor Influence on BehaviorNeuroscience and Neuropharmacology ResearchSubstance Abuse Treatment and Outcomes

Effect of Novel Allosteric Modulators of Metabotropic Glutamate Receptors on Drug Self-administration and Relapse: A Review of Preclinical Studies and Their Clinical Implications

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Caprioli, Daniele, Justinova, Zuzana, Venniro, Marco, Shaham, Yavin·2018·Biological Psychiatry

Abstract

Results from preclinical rodent studies during the last 20 years implicated glutamate neurotransmission in different brain regions in drug self-administration and rodent models of relapse. These results, along with evidence for drug-induced neuroadaptations in glutamatergic neurons and receptors, suggested that addiction might be treatable by medications that inhibit glutamatergic responses to drugs of abuse, drug-associated cues, and stressors. This idea is supported by findings in rodent and primate models that drug self-administration and relapse are reduced by systemic injections of antagonists of ionotropic glutamate receptors or metabotropic glutamate receptors (mGluRs) or orthosteric agonists of mGluR2/3. However, these compounds have not advanced to clinical use because of potential side effects and other factors. This state of affairs has led to the development of positive allosteric modulators (PAMs) and negative allosteric modulators (NAMs) of mGluRs. PAMs and NAMs of mGluRs, either of which can inhibit evoked glutamate release, may be suitable for testing in humans. We reviewed results from recent studies of systemically injected PAMs and NAMs of mGluRs in rodents and monkeys, focusing on whether they reduce drug self-administration, reinstatement of drug seeking, and incubation of drug craving. We also review results from rat studies in which PAMs or NAMs of mGluRs were injected intracranially to reduce drug self-administration and reinstatement. We conclude that PAMs and NAMs of mGluRs should be considered for clinical trials.

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Crossref · 10.1016/j.biopsych.2017.08.018

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  • Several studies established a causal role for reduced prefrontal metabotropic glutamate receptor 2 function in craving and relapse responses in preclinical models of alcohol dependence.

    “Several studies established a causal role for reduced prefrontal metabotropic glutamate receptor 2 (mGluR2) function in craving and relapse responses in preclinical models of alcohol dependence [48–52].”

    From Psilocybin-assisted therapy for severe alcohol use disorder: protocol for a double-blind, randomized, placebo-controlled, 7-month parallel-group phase II superiority trial (2024) · cites this paper as [50]

    The Group II metabotropic glutamate receptors > Reinstatement section (page unavailable) reports that an mGluR2 modulator reduced cue-induced alcohol seeking in rats, but not in rats lacking functional mGluR2, supporting a causal role for mGluR2 in that relapse response. It does not establish that reduced *prefrontal* mGluR2 function causes craving and relapse in models of alcohol dependence; its alcohol finding concerns cue-induced reinstatement, not craving broadly. (LLM, conf=0.85)

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Authors
Caprioli, D., Justinova, Z., Venniro, M., & Shaham, Y.
Affiliations
  • Sapienza University of Rome (IT)
  • National Institutes of Health (US)
Corresponding author
Caprioli, Daniele
Venue
Biological Psychiatry
Publisher
Elsevier BV
Published
2018-08
Volume
84
Issue
3
Pages
180-192
ISSN
0006-3223 (ISSN-L)
OpenAlex
W2753071628
Cited by
55
References
152
Citations by year
2026: 3 · 2025: 4 · 2024: 6 · 2023: 5 · 2022: 6 · 2021: 9 · 2020: 6 · 2019: 10 · 2018: 6
FWCI
0.74
Type
journal article
Language
en
Open access
Locations
  • Biological Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • IRIS Research product catalog (Sapienza University of Rome) (submittedVersion)
Funders
  • National Institutes of Health
  • National Institute on Drug Abuse (ZIADA000434)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Health Sciences › Medicine › Epidemiology › Substance Abuse Treatment and Outcomes
Keywords
metabotropic glutamate receptors, positive allosteric modulators, negative allosteric modulators, self-administration, relapse, reinstatement of drug seeking, drug craving, addiction treatment, glutamatergic neurotransmission, mGluR2/3 agonist
MeSH terms
Allosteric Regulation, Animals, Disease Models, Animal, Humans, Self Administration, Receptors, Metabotropic Glutamate, Excitatory Amino Acid Agents, Substance-Related Disorders, Drug-Seeking Behavior, Craving

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