Neurobiology of Stress
August 1, 2023
Min Cai, Yingbo Zhu, M. R. Shanley et al.
Repeated, long-term (weeks to months) exposure to standard antidepressant medications is required to achieve treatment efficacy. In contrast, acute ketamine quickly improves mood for an extended time. Recent work implicates that hyperpolarization-activated cyclic nucleotide-gated (HCN) channels are involved in mediating ketamine's antidepressant effects. In this study, we directly targeted HCN...
Journal of Psychiatric Research
August 1, 2023
Igor D. Bandeira, Gustavo C. Leal, Fernanda S. Correia-Melo et al.
There are significantly fewer options for the treatment of bipolar depression than major depressive disorder, with an urgent need for alternative therapies. In this pilot study, we treated six subjects with bipolar disorder types I and II (according to the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) criteria) who had been in a current depressive episode for at...
Journal of Affective Disorders
August 1, 2023
Mu-Hong Chen, Ya-Mei Bai, Hui-Ju Wu et al.
7 citations
OBJECTIVE Previous studies have found an association between klotho, an anti-aging hormone, and major depressive disorder. However, whether low-dose ketamine infusion alters klotho levels among patients with treatment-resistant depression (TRD) remains unknown. METHODS In total, 48 patients with TRD and strong suicidal ideation were randomly assigned to a single 0.5 mg/kg ketamine or 0.045...
Pharmaceuticals
August 1, 2023
Boney Joseph, Nicolas A. Nunez, Simon Kung et al.
14 citations
Intravenous (IV) ketamine and FDA-approved intranasal (IN) esketamine are increasingly used for treatment-resistant depression (TRD). Preliminary studies have suggested a synergistic effect of ketamine and lamotrigine, although the data are inconclusive. Herein, we report the response to serial ketamine/esketamine treatment among patients with TRD with or without lamotrigine therapy. In this...
EClinicalMedicine
August 1, 2023
Stevan Nikolin, Anthony Rodgers, Andreas Schwaab et al.
166 citations
Background: Intranasal esketamine has received regulatory approvals for the treatment of depression. Recently a large trial of repeated dose racemic ketamine also demonstrated efficacy in severe depression. However, uncertainties remain regarding comparative efficacy, dosage, and the time course of response. Methods: In this systematic review and meta-analysis, we searched Embase, Medline,...
Pharmacopsychiatry
July 30, 2023
Kengo Yonezawa, Hiroyuki Uchida, Taisuke Yatomi et al.
8 citations
Abstract Introduction Predictors of treatment response to intravenous ketamine remain unclear in patients with treatment-resistant depression (TRD); therefore, this study aimed to clarify these predictors using the US National Institutes of Health database of clinical trials. Methods Data from a placebo-controlled, double-blind, randomized controlled trial were used to assess the efficacy of...
Psychiatry Research
July 29, 2023
Mauro Pettorruso, Roberto Guidotti, Giacomo D’andrea et al.
56 citations
Treatment-resistant depression (TRD) represents a severe clinical condition with high social and economic costs. Esketamine Nasal Spray (ESK-NS) has recently been approved for TRD by EMA and FDA, but data about predictors of response are still lacking. Thus, a tool that can predict the individual patients' probability of response to ESK-NS is needed. This study investigates sociodemographic and...
Computational and Mathematical Methods in Medicine
July 26, 2023
Computational And Mathematical Methods In Medicine
[This retracts the article DOI: 10.1155/2022/1524198.].
Journal of Exploratory Research in Pharmacology
July 25, 2023
Helena van Oers
Major depressive disorder (MDD) is a prevalent and highly debilitating illness that causes significant functional impairment in many patients. Conventional pharmacotherapy, such as monoaminergic antidepressant agents, usually takes several weeks to improve symptomatology and has some adverse side effects, and in many cases, patients show clinical non-response. This has resulted in a quest to...
Translational Psychiatry
July 25, 2023
Li Ma, Long Wang, Youge Qu et al.
Relapse is common in remitted patients with major depressive disorder (MDD). Arketamine, an (R)-enantiomer of ketamine, has persistent prophylactic actions in an inflammatory model of depression. However, the precise mechanisms underlying these prophylactic actions remain unknown. Given the role of the brain-spleen axis in depression, we sought to identify splenic molecular targets that play a...
Psychiatric News
July 24, 2023
Nick Zagorski
Back to table of contents Previous article Next article Annual MeetingFull AccessKetamine Comparable to ECT for Many Patients With Refractory DepressionNick ZagorskiNick ZagorskiSearch for more papers by this authorPublished Online:24 Jul 2023https://doi.org/10.1176/appi.pn.2023.08.7.47AbstractFollowing a presentation of new clinical trial data at the Annual Meeting, some questioned why...
Neuropsychopharmacology
July 24, 2023
John H. Krystal, Ege T Kavalali, Lisa M Monteggia
229 citations
Ketamine is an open channel blocker of ionotropic glutamatergic N -Methyl- D -Aspartate (NMDA) receptors. The discovery of its rapid antidepressant effects in patients with depression and treatment-resistant depression fostered novel effective treatments for mood disorders. This discovery not only provided new insight into the neurobiology of mood disorders but also uncovered fundamental...
Behavioural Brain Research
July 22, 2023
Merve Akan, Ivan Skorodumov, M. Meinhardt et al.
The delayed onset of monoaminergic antidepressants and disadvantages of traditional administration routes created the need for alternative non-invasive delivery methods with rapid onset therapeutic effect. Ketamine attracted attention as a fast-acting glutamatergic antidepressant with ideal physiochemical properties for alternative routes of administration. However, there is no sufficient data...
Scientific Reports
July 19, 2023
Adelaida Castillo, Julien Dubois, Ryan M. Field et al.
19 citations
Quantifying neural activity in natural conditions (i.e. conditions comparable to the standard clinical patient experience) during the administration of psychedelics may further our scientific understanding of the effects and mechanisms of action. This data may facilitate the discovery of novel biomarkers enabling more personalized treatments and improved patient outcomes. In this single-blind,...
Frontiers in Human Neuroscience
July 18, 2023
Nicolas Garel, Julien Thibault Lévesque, Dasha A. Sandra et al.
29 citations
Background Psychedelic drug experiences are shaped by current-moment contextual factors, commonly categorized as internal (set) and external (setting). Potential influences of past environments, however, have received little attention. Aims To investigate how previous environmental stimuli shaped the experiences of patients receiving ketamine for treatment-resistant depression (TRD), and...
Neuropsychiatric Disease and Treatment
July 17, 2023
Cheng-Chuan Chen, Xiao-Bin Wang
Thank you very much for your attention and advice, as this is indeed a thought-provoking issue. Although the US Food and Drug Administration (FDA) has not yet recognized the advantages of ketamine in treating depression and preventing suicide, relevant research results show that ketamine also has a significant role in preventing suicide. In contrast, as the only drug approved by the FDA,...
Pharmaceuticals
July 17, 2023
Glorister A. Altê, Ana Lúcia S Rodrigues
17 citations
Ketamine, a racemic mixture of esketamine (S-ketamine) and arketamine (R-ketamine), has received particular attention for its rapid antidepressant and antisuicidal effects. NMDA receptor inhibition has been indicated as one of the main mechanisms of action of the racemic mixture, but other pharmacological targets have also been proposed. This study aimed to explore the possible multiple targets...
The British Journal of Psychiatry
July 14, 2023
Colleen Loo, N. Glozier, David Barton et al.
70 citations
Background Prior trials suggest that intravenous racemic ketamine is a highly effective for treatment-resistant depression (TRD), but phase 3 trials of racemic ketamine are needed. Aims To assess the acute efficacy and safety of a 4-week course of subcutaneous racemic ketamine in participants with TRD. Trial registration: ACTRN12616001096448 at www.anzctr.org.au. Method This phase 3,...
Neuropsychiatric Disease and Treatment
July 12, 2023
Lucian Manu
Effects of Intravenous Sub-Anesthetic Doses of Ketamine and Intranasal Inhaled Esketamine on Suicidal Ideation: A Systematic Review and Meta-Analysis." This letter is not a rebuttal to the article but, rather, a response to further clarify a few points on the real-world use of ketamine and esketamine.
International Clinical Psychopharmacology
July 11, 2023
Lucas Arrighi, Eloïse Maakaron, Théo Korchia et al.
About 30% of patients with major depressive disorder have treatment-resistant depression (TRD). Recently, intranasal esketamine was approved as a treatment option after the failure of two antidepressant trials. We report a patient with multiresistant depression that was successfully and safely treated with esketamine nasal spray. This 31-year-old inpatient with severe, chronic, and multi-TRD...