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Ketamine: all studies

Page 253 of 449: studies 2,521 to 2,530 of 4,486, newest first. Back to the ketamine overview

Research

Astrocytes activation contributes to the antidepressant-like effect of ketamine but not scopolamine.

Pharmacology, Biochemistry, and Behavior July 2018 Yun Wang, Liming Xie, Ce Gao et al.

Depression is a common, debilitating mood disorder, but currently available antidepressants have several major drawbacks. Both ketamine and scopolamine attract more and more attention due to their rapid and sustained antidepressant activities. However, the molecular and cellular mechanism that underlies the therapeutic action of ketamine and scopolamine still remain to be elucidated....

Ketamine: A Review for Clinicians

FOCUS: The Journal of Lifelong Learning in Psychiatry July 1, 2018 Gerard Sanacora, Rachel B. Katz 16 citations

A growing series of clinical trials and case series now suggest that ketamine-originally used as an anesthetic agent-potentially offers an exciting new treatment option for severe depression. Increasing numbers of studies show that ketamine can provide prompt relief for many depressed patients, including those with severe treatment-refractory depression. Although the effects of a single...

Is Ketamine the Future Clozapine for Depression? A Case Series and Literature Review on Maintenance Ketamine in Treatment-resistant Depression With Suicidal Behavior.

Journal of Psychiatric Practice July 1, 2018 Lai Fong Chan, Choon Leng Eu, Shean Yih Soh et al. 18 citations

Ketamine has shown effectiveness as a rapid-acting antidepressant with antisuicidal effects in terms of reduction of suicidal ideation in the short term. However, the evidence for long-term maintenance ketamine therapy for treatment-resistant depression (TRD) and suicidal behavior is limited. This case series (N=13) highlights the role of adjunctive serial maintenance ketamine infusions in...

Ketamine and Ketamine Metabolite Pharmacology: Insights into Therapeutic Mechanisms

Pharmacological Reviews June 26, 2018 Panos Zanos, Ruin Moaddel, Patrick J. Morris et al. 1,272 citations

Ketamine, a racemic mixture consisting of (S)- and (R)-ketamine, has been in clinical use since 1970. Although best characterized for its dissociative anesthetic properties, ketamine also exerts analgesic, anti-inflammatory, and antidepressant actions. We provide a comprehensive review of these therapeutic uses, emphasizing drug dose, route of administration, and the time course of these...

Glutamatergic Deficits in Schizophrenia – Biomarkers and Pharmacological Interventions within the Ketamine Model

Current Pharmaceutical Biotechnology June 21, 2018 Moritz Haaf, Gregor Leicht, Stjepan Curic et al. 53 citations

BACKGROUND: The observation that N-methyl-D-aspartate glutamate receptor (NMDAR) antagonists such as ketamine transiently induce schizophrenia-like positive, negative and cognitive symptoms has led to a paradigm shift from dopaminergic to glutamatergic dysfunction in pharmacological models of schizophrenia. NMDAR hypofunction can explain many schizophrenia symptoms directly due to...

Time until relapse after augmentation with single‐dose ketamine in treatment‐resistant depression

Psychiatry and Clinical Neurosciences June 19, 2018 R. Pérez-Esparza, T. Corona, R. Ruiz-García et al.

Growing evidence of the rapid antidepressant effects of ketamine represents a promising advance in treatment-resistant depression (TRD) therapeutics. Most studies provide information after treatment washout, reporting response up to 7 days and remission up to 3-5 days after a single dose.

The effects of a combination of intravenous dexamethasone and ketamine on postoperative mood in patients undergoing laparoscopically assisted-gynecologic surgery

Psychopharmacology June 14, 2018 Cheol Lee, Juhwan Lee, Gilho Lee et al.

It has been known that anesthetic adjuvants such as dexamethasone or ketamine might change mood. This study aimed to investigate the effects of a single dose of each drug individually along with their combined usage on postoperative mood changes in patients undergoing gynecologic surgery. Two hundred ninety-seven patients randomly allocated were divided into three groups. Group K (n = 99)...

Mechanisms of ketamine on mice hippocampi shown by gas chromatography-mass spectrometry-based metabolomic analysis.

Neuroreport June 13, 2018 Bin Lian, Jinjun Xia, Xun Yang et al.

In the present study, we used a gas chromatography-mass spectrometry-based metabolomics method to evaluate the effects of ketamine on mice hippocampi. Multivariate statistical analysis and ingenuity pathway analysis were then used to identify and explore the potential mechanisms and biofunction of ketamine. Compared with the control (CON) group, 14 differential metabolites that involved amino...

The monoaminergic pathways and inhibition of monoamine transporters interfere with the antidepressive-like behavior of ketamine

IBRO Reports June 13, 2018 Glauce Socorro de Barros Viana, Cecilia Coelho Xavier, Eduardo Mulato Do Vale et al. 10 citations

Ketamine (KET), a NMDA receptor antagonist, has been studied for its rapid and efficacious antidepressant effect, even for the treatment-resistant depression. Although depression is a major cause of disability worldwide, the treatment can be feasible, affordable and cost-effective, decreasing the population health burden. We evaluated the antidepressive-like effects of KET and its actions on...

No Sex-Specific Differences in the Acute Antidepressant Actions of (R)-Ketamine in an Inflammation Model

The International Journal of Neuropsychopharmacology June 6, 2018 Lijia Chang, Hidetoh Toki, Youge Qu et al. 26 citations

Background: Although previous reports suggest sex-specific differences in the antidepressant actions of (R,S)-ketamine, these differences in the antidepressant actions of (R)-ketamine, which is more potent than (S)-ketamine, are unknown. Methods: Saline or (R)-ketamine was administered 23 hours post lipopolysaccharide administration to adult male or female mice. Subsequently, antidepressant...