Cited by 786Treatment of Major DepressionElectroconvulsive Therapy StudiesTryptophan and brain disorders

Rapid and Longer-Term Antidepressant Effects of Repeated Ketamine Infusions in Treatment-Resistant Major Depression

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Murrough, James W., Perez, Andrew M., Pillemer, Sarah, Stern, Jessica, Parides, Michael K., aan het Rot, Marije, Collins, Katherine A., Mathew, Sanjay J. +2 more·2013·Biological Psychiatry

Abstract

Background Ketamine is reported to have rapid antidepressant effects; however, there is limited understanding of the time-course of ketamine effects beyond a single infusion. A previous report including 10 participants with treatment-resistant major depression (TRD) found that six ketamine infusions resulted in a sustained antidepressant effect. In the current report, we examined the pattern and durability of antidepressant effects of repeated ketamine infusions in a larger sample, inclusive of the original. Methods Participants with TRD (n = 24) underwent a washout of antidepressant medication followed by a series of up to six IV infusions of ketamine (.5 mg/kg) administered open-label three times weekly over a 12-day period. Participants meeting response criteria were monitored for relapse for up to 83 days from the last infusion. Results The overall response rate at study end was 70.8%. There was a large mean decrease in Montgomery-Åsberg Depression Rating Scale score at 2 hours after the first ketamine infusion (18.9 ± 6.6, p < .001), and this decrease was largely sustained for the duration of the infusion period. Response at study end was strongly predicted by response at 4 hours (94% sensitive, 71% specific). Among responders, median time to relapse after the last ketamine infusion was 18 days. Conclusions Ketamine was associated with a rapid antidepressant effect in TRD that was predictive of a sustained effect. Future controlled studies will be required to identify strategies to maintain an antidepressant response among patients who benefit from a course of ketamine.

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Crossref · 10.1016/j.biopsych.2012.06.022

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  • The lack of efficacy in this trial is likely due to the fact that most patients had mild to moderate depression as opposed to the more severe treatment-resistant major depression studied in ketamine clinical trials.

    “The lack of efficacy in our trial is likely due the fact that in our study most patients had mild to moderate depression as opposed to the more severe treatment-resistant major depression studied in ketamine clinical trials (Murrough et al, 2013a;Murrough et al, 2013b;Zarate et al, 2006).”
  • Ketamine's antidepressant properties are transient, lasting an average of 1 week following a single infusion and 18-19 days following repeated infusions.

    “However, ketamine’s antidepressant properties are also transient, lasting an average of 1 week following a single infusion10–14 and 18–19 days following repeated infusions.15,16”

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  1. [33]Wolff K Winstock AR 2006 Ketamine: from medicine to misuse CNS Drugs 20 199 218 16529526

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Authors
Murrough, J. W., Perez, A. M., Pillemer, S., Stern, J., Parides, M. K., aan het Rot, M., Collins, K. A., Mathew, S. J., Charney, D. S., & Iosifescu, D. V.
Affiliations
  • Icahn School of Medicine at Mount Sinai (US)
  • Michael E. DeBakey VA Medical Center (US)
Corresponding author
Murrough, James W.
Venue
Biological Psychiatry
Publisher
Elsevier BV
Published
2013-08
Volume
74
Issue
4
Pages
250-256
ISSN
0006-3223 (ISSN-L)
OpenAlex
W2091363925
Cited by
786
References
36
Citations by year
2026: 29 · 2025: 49 · 2024: 40 · 2023: 56 · 2022: 68 · 2021: 70 · 2020: 91 · 2019: 59 · 2018: 56 · 2017: 45 · 2016: 66 · 2015: 65 · 2014: 52 · 2013: 31 · 2012: 5
FWCI
35.99
Type
journal article
Language
en
Open access
Locations
  • Biological Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • University of Groningen research database (University of Groningen / Centre for Information Technology) (submittedVersion, other-oa)
  • University of Groningen research database (University of Groningen / Centre for Information Technology) (submittedVersion)
Funders
  • National Institute of Mental Health (T32MH096678, R01MH081870, K23MH094707, 5R01MH81870)
  • National Center for Research Resources (UL1RR029887)
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
ketamine, rapid antidepressant effects, recurrence prediction, antidepressant response prediction
MeSH terms
Adult, Antidepressive Agents, Female, Humans, Infusions, Intravenous, Ketamine, Male, Middle Aged, Depressive Disorder, Treatment-Resistant

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