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Ketamine: all studies

Page 258 of 449: studies 2,571 to 2,580 of 4,490, newest first. Back to the ketamine overview

Research

Acute psychoactive effects of intravenous ketamine during treatment of mood disorders: Analysis of the Clinician Administered Dissociative State Scale.

Journal of Affective Disorders February 2018 Gerrit I Van Schalkwyk, Samuel T. Wilkinson, Larry Davidson et al.

Ketamine has rapid-acting antidepressant effects. Frequently, ketamine administration also causes acute psychoactive effects - in trials, these effects are commonly measured using the Clinician Administered Dissociative State Scale (CADSS). However, the CADSS was not designed for this specific purpose, having been validated in other clinical contexts, and anecdotally does not appear to fully...

Mapping the central effects of (±)-ketamine and traxoprodil using pharmacological magnetic resonance imaging in awake rats.

Journal of Psychopharmacology February 2018 Haiying Tang, Daniel Kukral, Yu-Wen Li et al.

Major depressive disorder is a leading cause of disability globally. Improvements in the efficacy of antidepressant therapy are needed as a high proportion (>40%) of individuals with major depressive disorder fail to respond adequately to current treatments. The non-selective N-methyl-D-aspartate receptor channel blocker, (±)-ketamine, has been reported to produce a rapid and long-lasting...

Effects of NMDA antagonists ketamine, methoxetamine and phencyclidine on the odor span test of working memory in rats

Experimental and Clinical Psychopharmacology February 1, 2018 Michael Mathews, R. N. Mead, M. Galizio

The glutamate hypothesis proposes that N-Methyl-D-aspartate (NMDA) receptor hypofunction underlies cognitive and perhaps other schizophrenic symptoms. The present study used the odor span task to assess the effects of NMDA antagonists on remembering multiple stimuli in rodents. This task uses an incrementing nonmatching-to-sample procedure in which responses to a new olfactory stimulus are...

Psychedelics and reconsolidation of traumatic and appetitive maladaptive memories: focus on cannabinoids and ketamine.

Psychopharmacology February 1, 2018 Liana Fattore, Alessandro Piva, Mary Tresa Zanda et al.

Clinical data with 3,4-methylenedioxymethamphetamine (MDMA) in post-traumatic stress disorder (PTSD) patients recently stimulated interest on the potential therapeutic use of psychedelics in disorders characterized by maladaptive memories, including substance use disorders (SUD). The rationale for the use of MDMA in PTSD and SUD is being extended to a broader beneficial "psychedelic effect,"...

DOI: 10.1007/s00213-017-4793-4 (opens in new tab) Full text (opens in new tab) Ketamine Cannabinoids Maladaptive memories Post-traumatic stress disorders +2

Impact of oral ketamine augmentation on hospital admissions in treatment-resistant depression and PTSD: a retrospective study.

Psychopharmacology February 1, 2018 John Hartberg, Simone Garrett-Walcott, Angelo De Gioannis 66 citations

Depressive episodes are the leading cause of mental health-related hospital admissions in Australia, and 44% of those admitted have a previous history of hospitalisations for depression (Admitted patient mental health-related care: (Australian Institute of Health and Welfare Aust Hospital Stat 2011-12, 2013). Despite numerous available antidepressant treatments, many patients do not respond to...

Intravenous ketamine infusion for a patient with treatment-resistant major depression: a 10-month follow-up

Journal of Clinical Pharmacy and Therapeutics January 25, 2018 Ji‐Hye Kwon, Woo-Seok Sim, Jhuo Hong et al. 5 citations

WHAT IS KNOWN AND OBJECTIVE: Ketamine in a subanaesthetic dose has been shown to produce rapid antidepressant effects. Here, we describe a long-term follow-up case of a Korean patient with severe major depression who received repeated ketamine intravenous therapy (KIT). CASE DESCRIPTION: A 49-year-old woman with a 6-year history of treatment-resistant major depression was given KIT once every 1...

S-Ketamine Mediates Its Acute and Sustained Antidepressant-Like Activity through a 5-HT1B Receptor Dependent Mechanism in a Genetic Rat Model of Depression

Frontiers in Pharmacology January 15, 2018 Kristian Du Jardin, Nico Liebenberg, M. Cajina et al.

Rationale: The mechanisms responsible for the unique antidepressant properties of ketamine have only been partly resolved. Recent preclinical reports implicate the neurotransmitter serotonin [5-hydroxytryptamine (5-HT)] in the antidepressant-like response of ketamine, and modulation of 5-HT1B receptors has been hypothesized to attain an important role. Objectives: To evaluate the role of...

Role of NMDA receptor GluN2D subunit in the antidepressant effects and the cognitive impairment effects of enantiomers of ketamine

Proceedings for Annual Meeting of The Japanese Pharmacological Society 2018 Soichiro Ide, Yuiko Ikekubo, Masayoshi Mishina et al.

Background: The N-methyl-D-aspartate (NMDA) receptor antagonist ketamine exerts rapid and sustained antidepressant effects in depressed patients. Ketamine is a racemic mixture of equal amounts of enantiomers, (R)-ketamine and (S)-ketamine. The neural mechanisms that underlie different effects of these enantiomers remain unclear.

Prenatal exposure to ketamine in rats: Implications on animal models of schizophrenia.

Developmental Psychobiology January 2018 Carlos Coronel-Oliveros, Renny Pacheco-Calderón

Schizophrenia is a complex neuropsychiatric disorder characterized by hallucinations, delusions, anhedonia, flat affect and cognitive impairments. The aim of this study was to propose a prenatal treatment with ketamine, a psychedelic drug that acts as a non-competitive inhibitor of glutamate NMDA receptors, as a neurodevelopmental animal model of schizophrenia. The drug was applied (i.m. 60...

Rhynchophylline downregulates phosphorylated camp response element binding protein, nuclear receptor-related-1, and brain-derived neurotrophic factor expression in the hippocampus of ketamine-induced conditioned place preference rats

Pharmacognosy Magazine 2018 Ken Kin Lam Yung, Zhixian Mo, Youli Guo et al. 12 citations

BACKGROUND: species that is well known for both its potent anti-addictive and neuroprotective properties. Increasing evidence supports the contributions of cAMP response element binding protein (CREB), nuclear receptor-related-1 (Nurr1), and brain-derived neurotrophic factor (BDNF) in modulating neural and behavioral plasticity which was induced by addictive drugs. OBJECTIVE: To investigate the...