Metabotropic and ionotropic glutamate receptors as potential targets for the treatment of alcohol use disorder

•Role of metabotropic receptors mGluR1/5, mGluR2/3, and mGluR7 on alcohol intake.•Role of ionotropic receptors, NMDA and AMPA on alcohol intake.•Implication of glutamatergic receptors in development of alcohol dependence. Emerging evidence indicates that dysfunctional glutamate neurotransmission is...

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Published in:Neuroscience and biobehavioral reviews 2017-06, Vol.77, p.14-31
Main Authors: Goodwani, Sunil, Saternos, Hannah, Alasmari, Fawaz, Sari, Youssef
Format: Article
Language:English
Subjects:
Alcohol
Alcoholism
Alcohols
AMPA
Animals
Glutamate
Glutamic Acid
mGluR1/5
mGluR2/3
mGluR7
NMDA
Receptors, Ionotropic Glutamate - metabolism
Receptors, Metabotropic Glutamate - metabolism
Receptors, N-Methyl-D-Aspartate
Synaptic Transmission
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Summary:•Role of metabotropic receptors mGluR1/5, mGluR2/3, and mGluR7 on alcohol intake.•Role of ionotropic receptors, NMDA and AMPA on alcohol intake.•Implication of glutamatergic receptors in development of alcohol dependence. Emerging evidence indicates that dysfunctional glutamate neurotransmission is critical in the initiation and development of alcohol and drug dependence. Alcohol consumption induced downregulation of glutamate transporter 1 (GLT-1) as reported in previous studies from our laboratory. Glutamate is the major excitatory neurotransmitter in the brain, which acts via interactions with several glutamate receptors. Alcohol consumption interferes with the glutamatergic signal transmission by altering the functions of these receptors. Among the glutamate receptors involved in alcohol-drinking behavior are the metabotropic receptors such as mGluR1/5, mGluR2/3, and mGluR7, as well as the ionotropic receptors, NMDA and AMPA. Preclinical studies using agonists and antagonists implicate these glutamatergic receptors in the development of alcohol use disorder (AUD). Therefore, the purpose of this review is to discuss the neurocircuitry involving glutamate transmission in animals exposed to alcohol and further outline the role of metabotropic and ionotropic receptors in the regulation of alcohol-drinking behavior. This review provides ample information about the potential therapeutic role of glutamatergic receptors for the treatment of AUD.
ISSN:0149-7634
1873-7528
DOI:10.1016/j.neubiorev.2017.02.024