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Ketamine: all studies

Page 83 of 449: studies 821 to 830 of 4,483, newest first. Back to the ketamine overview

Research

Trends in ketamine use among nightclub attendees in New York City, 2017-2024.

International Journal of Drug Policy June 1, 2025 Joseph J Palamar 7 citations

Ketamine-related poisonings and law enforcement seizures have been increasing in the United States, but population surveys suggest that recreational use has been rare with trends being relatively stable. This study aimed to estimate trends and correlates of use among nightclub attendees-a population known for high prevalence of party drug use. Adults entering randomly selected nightclubs in New...

DOI: 10.1016/j.drugpo.2025.104825 (opens in new tab) Full text (opens in new tab) Drug trends Hallucinogens Nightclub attendees Nightlife culture +3

Converging pathways: shared brain circuitry engaged by monoaminergic antidepressants, ketamine and psilocybin

bioRxiv (Cold Spring Harbor Laboratory) May 30, 2025 Pavel Osten, K Sunny Joseph, Jane Collins et al. preprint

Abstract Ketamine has transformed depression treatment by providing therapeutic relief within a single day, unlike monoaminergic antidepressants that require weeks to take effect. Here, we conducted whole-brain screening in mice to compare drug-evoked c-fos expression—acting as a marker of brain activity leading to protein synthesis-dependent forms of plasticity—following treatment with...

In adult patients presenting to ED with severe acute pain, is intranasal ketamine as effective as intravenous opiates for pain reduction?

Emergency Medicine Journal May 30, 2025 Khilan Santilal, Rhea Saldanha 1 citation

This systematic review assessed whether intranasal (IN) ketamine is as effective as intravenous (IV) opiates for adults presenting to the ED with acute severe pain. EMBASE and Medline were searched, using relevant search terms, identifying four studies relevant to our three-part question. Key findings, as well as study weaknesses, were presented in a table. In summary, our results indicate that...

DOI: 10.1136/emermed-2025-215080 (opens in new tab) Full text (opens in new tab) Emergency medicine Pain management analgesia Pain control Ketamine ketamine therapy +5

Brain Injury and Ketamine study (BIKe): a prospective, randomized controlled double blind clinical trial to study the effects of ketamine on therapy intensity level and intracranial pressure in severe traumatic brain injury patients.

Trials May 28, 2025 Veerle De Sloovere, Liese Mebis, Pieter Wouters et al. 9 citations

In severe traumatic brain injury (TBI), sedatives are often used to control intracranial pressure (ICP), to reduce brain metabolism, to allow for other treatments such as mechanical ventilation or targeted temperature management, or to control paroxysmal sympathetic hyperactivity. Prolonged sedation is often necessary. The most commonly used sedatives in TBI are propofol and midazolam, often in...

DOI: 10.1186/s13063-025-08835-5 (opens in new tab) Full text (opens in new tab) Analgesics Brain injury Central nervous system Cranio-cerebral trauma +7

Effects of serotonergic psychedelics on synaptogenesis and immediate early genes expression - comparison with ketamine, fluoxetine and lithium.

Journal of Psychopharmacology May 28, 2025 Yana Vella, Kateřina Syrová, Aneta Petrušková et al. 1 citation

Recent evidence suggests that psychedelics can induce rapid and long-lasting antidepressant effects. The generally acknowledged explanation for these traits is the phenomenon of neuroplasticity, although the exact underlying molecular mechanisms remain unclear. This study investigates the effects of psilocin, lysergic acid diethylamide (LSD) and N,N-dimethyltryptamine (DMT) on synaptogenesis...

Does the intensity of dissociation predict antidepressant effects 24 hours after infusion of racemic ketamine or esketamine in treatment-resistant depression? A secondary analysis from a randomized controlled trial

Trends in Psychiatry and Psychotherapy May 27, 2025 Mariana V F Echegaray, Rodrigo P Mello, Guilherme M. Magnavita et al. 11 citations

Abstract Objective Ketamine and esketamine have both shown significant antidepressant effects in treatment-resistant depression (TRD) and conflicting evidence suggests that dissociation induced by these drugs could be a clinical predictor of esketamine/ketamine's efficacy. Methods This study is a secondary analysis of data from a two-center, randomized, controlled trial. Participants were...

Methylome and transcriptome functional analysis identifies key biomarkers in ketamine’s sustained therapeutic effect on PTSD

medRxiv May 27, 2025 Nathan J Wellington, Ana Paula Bouças, Paul Schwenn et al. 1 citation preprint

Abstract Background Ketamine has emerged as a rapid-acting therapeutic option for post-traumatic stress disorder (PTSD); however, its ability to sustain long-term therapeutic outcomes remains poorly understood. Identifying molecular biomarkers predictive of a sustained response to ketamine may enhance personalised treatment strategies. This study investigates the epigenetic and transcriptomic...

Temporal Immune Effects of Oral Ketamine on PTSD: Transcriptomic Evidence of Short-Term Inflammation Suppression and Long-Term Immune Remodelling

medRxiv Preprint Server May 26, 2025 Nathan J Wellington, Bonnie L. Quigley, Ana P. Bouças et al. preprint

Ketamine’s rapid acting symptom relief make it a promising intervention for PTSD. However, the mechanisms driving its long-term efficacy over weeks and months remain poorly understood. This study investigated the short-and long-term impacts on gene expression of a six-week subanesthetic oral ketamine trial in 23 PTSD participants (9 males, 14 females). Peripheral Blood Mononuclear Cells (PBMCs)...

DOI: 10.1101/2025.05.26.25328370 (opens in new tab) Full text (opens in new tab) Ketamine therapy PTSD Treatment Mental health treatment Ketamine For PTSD +14

Outpatient Ketamine Prescribing Practices in Psychiatry in the United States: A Nationwide Survey Study.

The Journal of Clinical Psychiatry May 26, 2025 Rachel M Pacilio, Sagar V Parikh, Jamarie Geller 4 citations

Background: Ketamine is an increasingly popular tool for the treatment of psychiatric disorders. Initially available in controlled studies at academic institutions, it is now being offered widely in the community, but little is known about how treatment is actually being delivered and if there are undetermined safety concerns. The aim of this study is to assess ketamine prescribing practices...

DOI: 10.4088/JCP.25m15809 (opens in new tab) Full text (opens in new tab) Ketamine therapy Mental health treatment Depression treatment Psychiatric care +1

GPX4 Inhibition Contributes to NLRP3-Mediated Pyroptosis and Cognitive Impairment in Ketamine-Exposed Neonatal Rats.

Molecular Neurobiology May 23, 2025 Hui Bai, Shan Du, Di Qiu et al. 4 citations

Increasing evidence reveals that multiple or prolonged exposure to ketamine causes hippocampal damage and cognitive dysfunction. However, the critical mechanisms underlying ketamine-induced neurotoxicity in the developing brain remain elusive. The present study was designed to investigate the role of GPX4 in ketamine-induced pyroptosis and cognitive dysfunction in the developing rat...