Trial reportNeuropsychopharmacology : official publication of the American College of Neuropsychopharmacology2018
7T
Trial report in Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 28 papers, 5 of them syntheses that pooled 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.
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.
Investigation of the Rapid (Next Day) Antidepressant Effects of an NMDA Antagonist
Evaluation of Schemes of Administration of Intravenous Ketamine in Treatment-resistant Depression: Clinical-neuroimaging Correlation
Who cites it
28 citing papers in PubMed, 5 syntheses or guidelines pooled it, 53 citations in OpenAlex.
- Neurometabolics of the anterior cingulate cortex (ACC) in major depressive disorder (MDD): A systematic review and meta-analysis.NeuroImage. Clinical · 2026Pooled it
- Psychedelics and ketamine/esketamine in depressive disorders: biological mechanisms and associated neuroimaging and clinical changes.Translational psychiatry · 2025Pooled it
- Brain-based correlates of antidepressant response to ketamine: a comprehensive systematic review of neuroimaging studies.The lancet. Psychiatry · 2023Pooled it
- Meta-analysis and open-source database for in vivo brain Magnetic Resonance spectroscopy in health and disease.Analytical biochemistry · 2023Pooled it
- The Mechanisms Behind Rapid Antidepressant Effects of Ketamine: A Systematic Review With a Focus on Molecular Neuroplasticity.Frontiers in psychiatry · 2022Pooled it
- Effect of naltrexone pretreatment on ketamine-induced glutamatergic activity and symptoms of depression: a randomized crossover study.Nature medicine · 2025Trial
- Lack of association between pretreatment glutamate/GABA and major depressive disorder treatment response.Translational psychiatry · 2025Trial
- Modulation of GABA and glutamate by ketamine in depression: A systematic review and meta-analysis of magnetic resonance spectroscopy studies.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026Article
- Detecting neuroplastic effects induced by ketamine in healthy human subjects: A multimodal approach.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2026Article
- Age-dependent alterations in anterior cingulate excitation-inhibition balance in major depressive disorder revealed by 7-Tesla magnetic resonance spectroscopy.NeuroImage. Clinical · 2026Article
- Esketamine alleviates depressive-like behavior in mice via modulation of the microbiota-gut-brain axis and amino acid metabolism.BMC microbiology · 2025Article
- Kynurenine Metabolism is Associated with Antidepressant Response to Selective Serotonin Reuptake Inhibitors.bioRxiv : the preprint server for biology · 2025Article
- Elevating the field for applying neuroimaging to individual patients in psychiatry.Translational psychiatry · 2024Review
- Ketamine and rapid antidepressant action: new treatments and novel synaptic signaling mechanisms.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2024Review
- Meta-analysis and Open-source Database for In Vivo Brain Magnetic Resonance Spectroscopy in Health and Disease.bioRxiv : the preprint server for biology · 2023Article
- Neuroimaging-Derived Biomarkers of the Antidepressant Effects of Ketamine.Biological psychiatry. Cognitive neuroscience and neuroimaging · 2023Review
- Review
- Functional MRI markers for treatment-resistant depression: Insights and challenges.Progress in brain research · 2023Review
- Predicting Antidepressant Effects of Ketamine: the Role of the Pregenual Anterior Cingulate Cortex as a Multimodal Neuroimaging Biomarker.The international journal of neuropsychopharmacology · 2022Article
- Acute effects of ketamine on the pregenual anterior cingulate: linking spontaneous activation, functional connectivity, and glutamate metabolism.European archives of psychiatry and clinical neuroscience · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
10 authors at 2 institutions in 2 countries.
Funding
Abstract
The glutamatergic modulator ketamine has striking and rapid antidepressant effects in major depressive disorder (MDD), but its mechanism of action remains unknown. Proton magnetic resonance spectroscopy (1H-MRS) is the only non-invasive method able to directly measure glutamate levels in vivo; in particular, glutamate and glutamine metabolite concentrations are separable by 1H-MRS at 7T. This double-blind, placebo-controlled, crossover study that included
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.