Journal of Affective Disorders
2023
Fan Zhang, Chengyu Wang, Xiaofeng Lan et al.
OBJECTIVE Hippocampal functional connectivity (FC) alterations, which may happen following ketamine treatment, play a key role in major depression remission. This study aims to investigate the resting-state FC changes of the hippocampus associated with clinical remission after repeated ketamine infusions. METHODS Forty-four major depressive patients received six intravenous ketamine (0.5 mg/kg)...
Therapeutic Advances in Psychopharmacology
2023
Fabrice Jollant, Romain Colle, Thi Mai Loan Nguyen et al.
Background: More than 2% of the general population experience suicidal ideas each year and a large number of them will attempt suicide. Evidence-based therapeutic options to manage suicidal crisis are currently limited. Objectives: The aim of this study was to overview the findings on the use of ketamine and esketamine for the treatment of suicidal ideas and acts. Design: Systematic review....
Neuropsychobiology
2023
Matti Gärtner, Anne Weigand, Christian Keicher et al.
Cognition and emotion are fundamentally integrated in the brain and mutually contribute to behavior. The relation between working memory (WM) and emotion is particularly suited to investigate cognition-emotion interaction since WM is an essential component of many higher cognitive functions. Ketamine affects not only WM but also has a profound impact on emotional processing. Effects of acute...
Advances in experimental medicine and biology
2023
Angelos Halaris, John Cook
The glutamatergic system is the primary excitatory pathway within the CNS and is responsible for cognition, memory, learning, emotion, and mood. Because of its significant importance in widespread nervous system function, it is tightly regulated through multiple mechanisms, such as glutamate recycling, microglial interactions, and inflammatory pathways. Imbalance within the glutamatergic system...
Yakugaku Zasshi
2023
Satoshi Deyama
Ketamine, an N-methyl-D-aspartate receptor antagonist, elicits swift antidepressant effects even in subjects with treatment-resistant depression. Nonetheless, owing to the serious adverse effects associated with ketamine, including psychotomimetic effects, the development of safer rapid-acting antidepressants is imperative. The elucidation of the mechanisms underlying the antidepressant effects...
Biologie aujourd'hui
2023
Jean-Philippe Guilloux, Thi Mai Loan Nguyen, Alain M. Gardier
Ketamine, a non-competitive antagonist of the N-methyl-D-aspartate-glutamate receptor (R-NMDA), has a rapid (from 24 h post-dose) and prolonged (up to one week) antidepressant effect in treatment resistant depression and in rodent models of anxiety/depression. Arguments regarding its cellular and molecular mechanisms underlying its antidepressant activity mainly come from animal studies....
Biologie aujourd'hui
2023
Philippe Fossati
Thirty percent of depressed patients are treatment resistant (TRD) suggesting the need of new therapeutic strategy. Recently, it has been shown that ketamine, an anesthetic agent with dissociative effects, has potent and rapid antidepressant properties. Ketamine is a ionotropic glutamatergic NMDA antagonist that inhibits gabaergic neurons. Its antidepressant effect peaks at 24 h post-treatment....
Biologie aujourd'hui
2023
Emilie Olié, Aiste Lengvenyte, Philippe Courtet
In France, suicidal behaviors remain a major public health issue. Depressed patients with suicidal ideation have more severe depressive symptoms, a more unfavorable disease course, and a greater number of suicide attempts than patients without suicidal ideation. Unfortunately, conventional antidepressants tend to be less effective in patients with suicidal tendencies than in those without....
Egyptian Pharmaceutical Journal
2023
Gehan S. Georgy, Amany M Gad, H. Anwar et al.
Background The pupae of mulberry silkworms, family Bombycidae, possess a great number of proteins that cover all of the necessary amino acids obligatory for well-being. Objective In this study, we aimed to evaluate the probable antipsychotic effect of pupae of mulberry silkworms in a rat model of schizophrenia prompted by ketamine on the cerebral cortex, hippocampus, and striatum, the brain...
Medicine Science | International Medical Journal
2023
Guven Akcay
Schizophrenia is a serious neuropsychiatric disorder that affects 1% of the world's population. It plays an important role in psychiatric symptoms, including major depression and schizophrenia. However, it is also known that one of the main reasons underlying the pathogenesis of schizophrenia is oxidative stress. Transcranial direct current stimulation (tDCS) has recently been a promising...