Trial reportThe international journal of neuropsychopharmacology2019
Nocturnal Gamma-Hydroxybutyrate Reduces Cortisol-Awakening Response and Morning Kynurenine Pathway Metabolites in Healthy Volunteers.
Trial report in The international journal of neuropsychopharmacology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02342366 (Multimodal Characterization of the Prosocial and Prosexual Effects of GHB Assessing Behavior, fMRI, EEG, and Neuroendocrine Mechanisms), which is not on this map. Cited by 10 papers.
What it found
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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.
Multimodal Characterization of the Prosocial and Prosexual Effects of GHB Assessing Behavior, fMRI, EEG, and Neuroendocrine Mechanisms
Who cites it
10 citing papers in PubMed, 14 citations in OpenAlex.
- Prophylactic effect of intraoperative sodium oxybate on postoperative delirium in older patients undergoing major orthopedic surgery: a randomized clinical trial.BMC medicine · 2025Trial
- Subacute changes in brain functional network connectivity after nocturnal sodium oxybate intake are associated with anterior cingulate GABA.Cerebral cortex (New York, N.Y. : 1991) · 2023Trial
- Activation of the kynurenine pathway in possible bruxism: associations with cortisol, TNF-α, and possible bruxism subtypes.Oral and maxillofacial surgery · 2026Article
- Differential alterations in peripheral tryptophan pathways in methamphetamine versus MDMA users are linked to their contrasting psychiatric symptoms.Translational psychiatry · 2026Article
- Can Sodium Oxybate Mitigate the Symptoms of Schizophrenia?Current neuropharmacology · 2026Review
- Depression and the Glutamate/GABA-Glutamine Cycle.Current neuropharmacology · 2024Review
- Urinary concentrations of GHB and its novel amino acid and carnitine conjugates following controlled GHB administration to humans.Scientific reports · 2023Article
- Stress and Kynurenine-Inflammation Pathway in Major Depressive Disorder.Advances in experimental medicine and biology · 2023Article
- Observational
- Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
13 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundGamma-hydroxybutyrate (GHB; or sodium oxybate) is an endogenous GHB-/gamma-aminobutyric acid B receptor agonist. It is approved for application in narcolepsy and has been proposed for the potential treatment of Alzheimer's disease, Parkinson's disease, fibromyalgia, and depression, all of which involve neuro-immunological processes. Tryptophan catabolites (TRYCATs), the cortisol-awakening response (CAR), and brain-derived neurotrophic factor (BDNF) have been suggested as peripheral biomarkers of neuropsychiatric disorders. GHB has been shown to induce a delayed reduction of T helper and natural killer cell counts and alter basal cortisol levels, but GHB's effects on TRYCATs, CAR, and BDNF are unknown.
methodsTherefore, TRYCAT and BDNF serum levels, as well as CAR and the affective state (Positive and Negative Affect Schedule [PANAS]) were measured in the morning after a single nocturnal dose of GHB (50 mg/kg body weight) in 20 healthy male volunteers in a placebo-controlled, balanced, randomized, double-blind, cross-over design.
resultsIn the morning after nocturnal GHB administration, the TRYCATs indolelactic acid, kynurenine, kynurenic acid, 3-hydroxykynurenine, and quinolinic acid; the 3-hydroxykynurenine to kynurenic acid ratio; and the CAR were significantly reduced (P < 0.05-0.001, Benjamini-Hochberg corrected). The quinolinic acid to kynurenic acid ratio was reduced by trend. Serotonin, tryptophan, and BDNF levels, as well as PANAS scores in the morning, remained unchanged after a nocturnal GHB challenge.
conclusionsGHB has post-acute effects on peripheral biomarkers of neuropsychiatric disorders, which might be a model to explain some of its therapeutic effects in disorders involving neuro-immunological pathologies. This study was registered at ClinicalTrials.gov as NCT02342366.
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