Cited by 271Treatment of Major DepressionNeurotransmitter Receptor Influence on BehaviorNeuroscience and Neuropharmacology Research

The DOI matches its Crossref record; 85 of the 86 references it cites were found in a registry or an index.

Pharmacological and behavioral divergence of ketamine enantiomers: implications for abuse liability

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Abstract

Ketamine, a racemic mixture of (S)-ketamine and (R)-ketamine enantiomers, has been used as an anesthetic, analgesic and more recently, as an antidepressant. However, ketamine has known abuse liability (the tendency of a drug to be used in non-medical situations due to its psychoactive effects), which raises concerns for its therapeutic use. (S)-ketamine was recently approved by the United States' FDA for treatment-resistant depression. Recent studies showed that (R)-ketamine has greater efficacy than (S)-ketamine in preclinical models of depression, but its clinical antidepressant efficacy has not been established. The behavioral effects of racemic ketamine have been studied extensively in preclinical models predictive of abuse liability in humans (self-administration and conditioned place preference [CPP]). In contrast, the behavioral effects of each enantiomer in these models are unknown. We show here that in the intravenous drug self-administration model, the gold standard procedure to assess potential abuse liability of drugs in humans, rats self-administered (S)-ketamine but not (R)-ketamine. Subanesthetic, antidepressant-like doses of (S)-ketamine, but not of (R)-ketamine, induced locomotor activity (in an opioid receptor-dependent manner), induced psychomotor sensitization, induced CPP in mice, and selectively increased metabolic activity and dopamine tone in medial prefrontal cortex (mPFC) of rats. Pharmacological screening across thousands of human proteins and at biological targets known to interact with ketamine yielded divergent binding and functional enantiomer profiles, including selective mu and kappa opioid receptor activation by (S)-ketamine in mPFC. Our results demonstrate divergence in the pharmacological, functional, and behavioral effects of ketamine enantiomers, and suggest that racemic ketamine's abuse liability in humans is primarily due to the pharmacological effects of its (S)-enantiomer.

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Authors
Bonaventura, J., Lam, S., Carlton, M., Boehm, M. A., Gomez, J. L., Solís, O., Sánchez-Soto, M., Morris, P. J., Fredriksson, I., Thomas, C. J., Sibley, D. R., Shaham, Y., Zarate, C. A., & Michaelides, M.
Affiliations
  • National Institutes of Health (US)
  • National Institute on Drug Abuse (US)
  • National Center for Advancing Translational Sciences (US)
  • National Institute of Neurological Disorders and Stroke (US)
  • National Institute of Mental Health (US)
Corresponding author
  • Bonaventura, Jordi
  • Michaelides, Michael
Venue
Molecular Psychiatry
Published
2021-04-15
Volume
26
Issue
11
Pages
6704-6722
ISSN
  • 1359-4184 (ISSN-L)
  • 1476-5578
OpenAlex
W3156594315
Cited by
271
References
86
Citations by year
2026: 35 · 2025: 46 · 2024: 64 · 2023: 56 · 2022: 53 · 2021: 17
FWCI
27.71
Type
journal article
Language
en
Open access
Locations
  • Molecular Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
U.S. Department of Health & Human Services | NIH | National Institute on Drug Abuse (DA000069)
Topics
  • Health Sciences › Medicine › Pharmacology (medical) › Treatment of Major Depression
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
ketamine, enantiomers, esketamine, (R)-ketamine, abuse liability, self-administration, conditioned place preference, locomotor activity, locomotor sensitization, medial prefrontal cortex, dopamine, opioid receptors, mu-opioid receptor, kappa opioid receptor, antidepressant efficacy, treatment-resistant depression
MeSH terms
Animals, Antidepressive Agents, Depression, Ketamine, Stereoisomerism, Mice, Rats, Depressive Disorder, Treatment-Resistant

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