Cited by 50Treatment of Major DepressionNeuroscience and Neuropharmacology ResearchNeurotransmitter Receptor Influence on Behavior

Metabotropic Glutamatergic Receptor 5 and Stress Disorders: Knowledge Gained From Receptor Imaging Studies

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Esterlis, Irina, Holmes, Sophie E., Sharma, Priya, Krystal, John H., DeLorenzo, Christine·2018·Biological Psychiatry

Abstract

The metabotropic glutamatergic receptor subtype 5 (mGluR5) may represent a promising therapeutic target for stress-related psychiatric disorders. Here, we describe mGluR5 findings in stress disorders, particularly major depressive disorder (MDD), highlighting insights from positron emission tomography studies. Positron emission tomography studies report either no differences or lower mGluR5 in MDD, potentially reflecting MDD heterogeneity. Unlike the rapidly acting glutamatergic agent ketamine, mGluR5-specific modulation has not yet shown antidepressant efficacy in MDD and bipolar disorder. Although we recently showed that ketamine may work, in part, through significant mGluR5 modulation, the specific role of mGluR5 downregulation in ketamine's antidepressant response is unclear. In contrast to MDD, there has been much less investigation of mGluR5 in bipolar disorder, yet initial studies indicate that mGluR5-specific treatments may aid in both depressed and manic mood states. The direction of modulation needed may be state dependent, however, limiting clinical feasibility. There has been relatively little study of posttraumatic stress disorder or obsessive-compulsive disorder to date, although there is evidence for the upregulation of mGluR5 in these disorders. However, while antagonism of mGluR5 may reduce fear conditioning, it may also reduce fear extinction. Therefore, studies are needed to determine the role mGluR5 modulation might play in the treatment of these conditions. Further challenges in modulating this prevalent neurotransmitter system include potential induction of significant side effects. As such, more research is needed to identify level and type (positive/negative allosteric modulation or full antagonism) of mGluR5 modulation required to translate existing knowledge into improved therapies.

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  1. [21]Lin X Donthamsetti P Skinberg M Slifstein M Abi-Dargham A Javitch J 2015 FPEB and ABP688 cannot accesss internalized mGluR5 receptors MGluR5 workshop Columbia University
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Authors
Esterlis, I., Holmes, S. E., Sharma, P., Krystal, J. H., & DeLorenzo, C.
Affiliations
  • Yale University (US)
  • Western University (CA)
  • Stony Brook University (US)
Corresponding author
Esterlis, Irina
Venue
Biological Psychiatry
Publisher
Elsevier BV
Published
2018-07
Volume
84
Issue
2
Pages
95-105
ISSN
0006-3223 (ISSN-L)
OpenAlex
W2755687856
Cited by
50
References
146
Citations by year
2026: 3 · 2025: 8 · 2024: 6 · 2023: 8 · 2022: 8 · 2021: 5 · 2020: 6 · 2019: 2 · 2018: 4
FWCI
0.42
Type
journal article
Language
en
Open access
Locations
  • Biological Psychiatry (acceptedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institutes of Health (K01MH091354, R01MH104459, K01MH092681)
Topics
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
mGluR5, stress disorders, major depressive disorder, bipolar disorder, post-traumatic stress disorder, obsessive-compulsive disorder, ketamine, antidepressant efficacy, fear extinction, fear conditioning, receptor imaging, allosteric modulation
MeSH terms
Antidepressive Agents, Brain, Carbon Radioisotopes, Depression, Depressive Disorder, Major, Major Depressive Disorder, Humans, Ketamine, Randomized Controlled Trials as Topic, Excitatory Amino Acid Antagonists, Positron-Emission Tomography, Receptor, Metabotropic Glutamate 5

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