Cited by 28Treatment of Major DepressionElectroconvulsive Therapy StudiesTryptophan and brain disorders

Ameliorating treatment-refractory depression with intranasal ketamine: potential NMDA receptor actions in the pain circuitry representing mental anguish

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Opler, Lewis A., Opler, Mark G. A., Arnsten, Amy F. T.·2016·CNS Spectrums

Abstract

This article reviews the antidepressant actions of ketamine, an N-methyl-D-aspartame glutamate receptor (NMDAR) antagonist, and offers a potential neural mechanism for intranasal ketamine's ultra-rapid actions based on the key role of NMDAR in the nonhuman primate prefrontal cortex (PFC). Although intravenous ketamine infusions can lift mood within hours, the current review describes how intranasal ketamine administration can have ultra-rapid antidepressant effects, beginning within minutes (5-40 minutes) and lasting hours, but with repeated treatments needed for sustained antidepressant actions. Research in rodents suggests that increased synaptogenesis in PFC may contribute to the prolonged benefit of ketamine administration, beginning hours after administration. However, these data cannot explain the relief that occurs within minutes of intranasal ketamine delivery. We hypothesize that the ultra-rapid effects of intranasal administration in humans may be due to ketamine blocking the NMDAR circuits that generate the emotional representations of pain (eg, Brodmann Areas 24 and 25, insular cortex), cortical areas that can be overactive in depression and which sit above the nasal epithelium. In contrast, NMDAR blockade in the dorsolateral PFC following systemic administration of ketamine may contribute to cognitive deficits. This novel view may help to explain how intravenous ketamine can treat the symptoms of depression yet worsen the symptoms of schizophrenia.

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  1. [46]Neafsey EJ Prefrontal control of the autonomic nervous system: Anatomical and physiological observations Progress in Brain Res 1990 85 147 165 2094892

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Authors
Opler, L. A., Opler, M. G. A., & Arnsten, A. F. T.
Affiliations
  • Columbia University Irving Medical Center (US)
  • Yale University (US)
Corresponding author
Arnsten, Amy F. T.
Venue
CNS Spectrums
Published
2015-01-26
Volume
21
Issue
1
Pages
12-22
ISSN
  • 1092-8529 (ISSN-L)
  • 2165-6509
OpenAlex
W2109249243
Cited by
28
References
83
Citations by year
2025: 3 · 2024: 2 · 2023: 3 · 2022: 2 · 2021: 2 · 2020: 4 · 2018: 3 · 2017: 4 · 2016: 4 · 2015: 1
FWCI
0.50
Type
journal article
Language
en
Open access
Locations
  • CNS Spectrums (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute on Aging (DP1AG047744)
Topics
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Health Sciences › Medicine › Psychiatry and Mental health › Electroconvulsive Therapy Studies
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
Keywords
intranasal ketamine, treatment-resistant depression, NMDA receptor antagonism, prefrontal cortex, synaptogenesis, insula, cognitive impairment, schizophrenia, nasal epithelium
MeSH terms
Administration, Intranasal, Animals, Cerebral Cortex, Humans, Ketamine, Pain, Synapses, Receptors, N-Methyl-D-Aspartate, Prefrontal Cortex, Excitatory Amino Acid Antagonists, Depressive Disorder, Treatment-Resistant

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