Evidence map›Paper›PMID 30215218›Full record

ArticlePsychopharmacology2018

Lack of deuterium isotope effects in the antidepressant effects of (R)-ketamine in a chronic social defeat stress model.

Kai Zhang, Hidetoh Toki, Yuko Fujita, Min Ma, Lijia Chang, Youge Qu, Shingo Harada, Tetsuhiro Nemoto, Akiko Mizuno-Yasuhira, Jun-Ichi Yamaguchi and 2 more

Abstract read
PubMed Publisher
In one paragraph

Article in Psychopharmacology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
4.2field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed, 31 citations in OpenAlex.

  1. Ketamine and its enantiomers for depression: a bibliometric analysis from 2000 to 2023.European archives of psychiatry and clinical neuroscience · 2025
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  11. Is the History Repeated? Can (2Journal of experimental neuroscience · 2018
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors at 4 institutions in 2 countries.

Kai ZhangDivision of Clinical Neuroscience, Chiba University Center for Forensic Mental Health, Chiba, 260-8670, Japan.
Hidetoh TokiResearch Headquarters, Taisho Pharmaceutical Co., Ltd., Saitama, Japan.
Yuko FujitaDivision of Clinical Neuroscience, Chiba University Center for Forensic Mental Health, Chiba, 260-8670, Japan.
Min MaDivision of Clinical Neuroscience, Chiba University Center for Forensic Mental Health, Chiba, 260-8670, Japan.
Lijia ChangDivision of Clinical Neuroscience, Chiba University Center for Forensic Mental Health, Chiba, 260-8670, Japan.
Youge QuDivision of Clinical Neuroscience, Chiba University Center for Forensic Mental Health, Chiba, 260-8670, Japan.
Shingo HaradaGraduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan.
Tetsuhiro NemotoGraduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan.
Akiko Mizuno-YasuhiraResearch Headquarters, Taisho Pharmaceutical Co., Ltd., Saitama, Japan.
Jun-Ichi YamaguchiResearch Headquarters, Taisho Pharmaceutical Co., Ltd., Saitama, Japan.
Shigeyuki ChakiResearch Headquarters, Taisho Pharmaceutical Co., Ltd., Saitama, Japan.
Kenji HashimotoDivision of Clinical Neuroscience, Chiba University Center for Forensic Mental Health, Chiba, 260-8670, Japan. hashimoto@faculty.chiba-u.jp.
Center for Forensic Mental Health, Chiba University · JPTaisho Pharmaceutical (Japan) · JPChiba University · JPNanjing Medical University · CN

Funding

Japan Agency for Medical Research and Development JP18dm0107119
6 · The paper itself

Abstract

rationale(R,S)-ketamine, an N-methyl-D-aspartate receptor (NMDAR) antagonist, exhibits rapid and long-lasting antidepressant effects and anti-suicidal ideation in treatment-resistant patients with depression. However, the precise mechanisms underlying the antidepressant actions of (R,S)-ketamine are unknown. Although the previous report demonstrated the deuterium isotope effects in the antidepressant actions of (R,S)-ketamine, the deuterium isotope effects in the antidepressant actions of (R)-ketamine, which is more potent than (S)-ketamine, are unknown.

methodsWe examined whether deuterium substitution at the C6 position could affect antidepressant effects of (R)-ketamine in a chronic social defeat stress (CSDS) model.

resultsPharmacokinetic studies showed that levels of (2R,6R)-d

conclusionsThe present study suggests that deuterium substitution of hydrogen at the C6 position slows the metabolism from (R)-ketamine to (2R,6R)-HNK in mice. In contrast, we did not find the deuterium isotope effects in terms of the rapid and long-lasting antidepressant effects of (R)-ketamine in a CSDS model. Therefore, it is unlikely that (2R,6R)-HNK is essential for antidepressant effects of (R)-ketamine.

Indexed as

Disease Models, AnimalAnimalsAntidepressive AgentsBrainChronic DiseaseDepressionDeuteriumKetamineMaleMiceMice, Inbred C57BLStress, PsychologicalTreatment OutcomeAntidepressive AgentsDeuteriumKetaminenorketamine(2R,6R)-hydroxynorketamineDeuterium isotope effectMetabolism(R)-ketamine

Identifiers

PMID30215218
OpenAlexW2892283864

What OpenQuestion holds

Textmetadata
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.