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Ketamine: all studies

Page 255 of 449: studies 2,541 to 2,550 of 4,486, newest first. Back to the ketamine overview

Research

Ketamine administration during a critical period after forced ethanol abstinence inhibits the development of time-dependent affective disturbances.

Neuropsychopharmacology May 24, 2018 Oliver Vranjkovic, Garrett Winkler, Danny G Winder

Forced abstinence from chronic two bottle-choice ethanol drinking produces the development of negative affective states in female C57BL/6J mice. We previously reported that this disrupted behavior is acutely reversed by administration of ketamine 30 min-prior to testing. Here we assessed whether ketamine can be used as an inoculant against the development of abstinence- dependent affective...

Ketamine and rapid-acting antidepressants: a new era in the battle against depression and suicide

F1000Research May 24, 2018 Ronald S. Duman 203 citations

Therapeutic medications for the treatment of depression have serious limitations, particularly delayed onset and low rates of efficacy. However, the discovery that a single subanesthetic dose of ketamine, a glutamate NMDA receptor channel blocker, can produce a rapid (within hours) antidepressant response that is sustained (about 1 week), even in patients considered treatment-resistant, has...

A Review of the Mechanism of Antagonism of N-methyl-D-aspartate Receptor by Ketamine in Treatment-resistant Depression.

Cureus May 18, 2018 Yasar Sattar, John M Wilson, Ali M Khan et al.

The biochemical processes involved in depression go beyond serotonin, norepinephrine, and dopamine. The N-methyl-D-aspartate (NMDA) receptor has a major role in the neurophysiology of depression. Ketamine, one of the prototypical NMDA antagonists, works rapidly in controlling depressive symptoms, including acutely suicidal behavior, by just a single injection. Ketamine may rapidly increase the...

Low serum level of epidermal growth factor in chronic ketamine users.

Human Psychopharmacology: Clinical and Experimental May 2018 Minling Zhang, Hongbo He, Yuping Ning et al.

Growth factors play an important role in brain development. Whether epidermal growth factor (EGF) plays a role in the pathophysiology of ketamine related disorders is unexplored. In this study, we examined the serum levels of EGF in chronic ketamine users as compared with healthy controls. The possible correlation between serum EGF levels with the demographic, ketamine use characteristics and...

Antidepressant Efficacy and Tolerability of Ketamine and Esketamine: A Critical Review.

CNS Drugs May 2018 Patricio Molero, J A Ramos-Quiroga, Rocío Martín‐Santos et al.

Ketamine and its enantiomer S-ketamine (esketamine) are promising candidates to produce a rapid-onset antidepressant effect in treatment-resistant depression. Ketamine causes continued blockade of the glutamate N-methyl-D-aspartate (NMDA) receptor, though this might not primarily mediate the antidepressant effect. Alternative hypotheses include selectivity for the NMDA receptor subtype...

Protective effects of tetrahydropalmatine against ketamine-induced learning and memory injury via antioxidative, anti-inflammatory and anti-apoptotic mechanisms in mice.

Molecular medicine reports May 1, 2018 Yonglai Zhang, Rui Sha, Kaiguo Wang et al. 26 citations

Tetrahydropalmatine exerts numerous pharmacological activities, including analgesic and narcotic effects; anti-arrhythmic, blood pressure lowering and cardioprotective effects; protective effects against cerebral ischemia-reperfusion injury; inhibition of platelet aggregation; prevention of ulcerative diseases and inhibition of gastric acid secretion; antitumor effects; and beneficial effects...

DOI: 10.3892/mmr.2018.8700 (opens in new tab) Full text (opens in new tab) Ketamine Tetrahydropalmatine Cytochrome c Phospholipase c-γ1

Predictors of Response to Ketamine in Treatment Resistant Major Depressive Disorder and Bipolar Disorder

International Journal of Environmental Research and Public Health April 17, 2018 Carola Rong, Caroline Park, Joshua D. Rosenblat et al. 116 citations

OBJECTIVES: Extant evidence indicates that ketamine exerts rapid antidepressant effects in treatment-resistant depressive (TRD) symptoms as a part of major depressive disorder (MDD) and bipolar disorder (BD). The identification of depressed sub-populations that are more likely to benefit from ketamine treatment remains a priority. In keeping with this view, the present narrative review aims to...

Effects of Subanesthetic Ketamine Administration on Visual and Auditory Event-Related Potentials (ERP) in Humans: A Systematic Review

Frontiers in Behavioral Neuroscience April 16, 2018 André Schwertner, Maxciel Zortéa, Felipe Vasconcelos Torres et al. 48 citations

Ketamine is a non-competitive N-Methyl-D-Aspartate (NMDA) receptor antagonist whose effect in subanesthetic doses has been studied for chronic pain and mood disorders treatment. It has been proposed that ketamine could change the perception of nociceptive stimuli by modulating the cortical connectivity and altering the top-down mechanisms that control conscious pain perception. As this is a...

DOI: 10.3389/fnbeh.2018.00070 (opens in new tab) Ketamine Nmda receptor Sensory system Dissociative +4

Subanaesthetic ketamine and altered states of consciousness in humans

British Journal of Anaesthesia April 13, 2018 Phillip E. Vlisides, Tarik Bel‐bahar, Amanda Nelson et al. 117 citations

BackgroundDespite its designation as a 'dissociative anaesthetic,' the dissociative and psychoactive effects of ketamine remain incompletely understood. The goal of this study was to characterise the subjective experiences and accompanying EEG changes with subanaesthetic doses of ketamine.MethodsHigh-density EEG was recorded in 15 human volunteers before, during, and after subanaesthetic...

DOI: 10.1016/j.bja.2018.03.011 (opens in new tab) Ketamine Altered state Consciousness Cognitive science