Abstract Ketamine and psilocybin show potential as therapies for various mental illnesses, including major depressive disorder. However, further investigation into their neural mechanisms is required to understand their effects on the brain. By combining computational modelling with electroencephalography (EEG), we examine the effects of ketamine and psilocybin on hierarchical sensory...
Treatment-Resistant Depression (TRD) challenges psychiatric treatment, with existing guidelines covering only a subset of augmentation strategies. A network meta-analysis following PRISMA guidelines examined the efficacy and safety of TRD treatments, analyzing 72 randomized controlled trials from eight databases, assessing response and remission rates, tolerability, and safety through the...
With the discovery of the antidepressive effects of ketamine and the increasing withdrawal of the pharmaceutical industry from the development of new psychotropic drugs, the psychiatric research into the clinical application of hallucinogens in psychiatry has literally blossomed in the last two decades. Promising results for various treatment approaches with psychedelic agents, such lysergic...
Changes in glutamatergic neuroplasticity has been proposed as one of the core mechanisms underlying the pathophysiology of depression. In consequence components of the glutamatergic synapse have been explored as potential targets for antidepressant treatment. The rapid antidepressant effect of the NMDA receptor antagonist ketamine and subsequent approval of its S-enantiomer (i.e. esketamine),...
Recent experience with off-label use of ketamine and recent challenges experienced in research with MDMA and psilocybin provide additional perspectives on how best to continue development of experimental psychedelic medications. Andrews et al. [1] provide a valuable perspective by noting the parallels between the ongoing deregulation of cannabis and what is now happening with psychedelics. The...
Objectives: Primary Objective: (1) The objectives of the study are as follows: assessment of the effectiveness of ketamine-based treatment in known patients of various subtypes of depression and (2) assessment of time of onset and duration along with routes of administration and safety of ketamine therapy. Secondary Objective: The objectives of the study are as follows: (1) evaluate changes in...
Quality in SportJuly 28, 2024Weronika Szafrańska, Dominika Poborowska, Tomasz Gańko et al.
Introduction and purpose: Major depressive disorder (MDD) is the most common psychiatric illness, affecting millions of people worldwide. The first line of pharmacological treatment is usually monoamine reuptake inhibitors. Up to 60% of cases, may be drug-resistant patients, prompting researchers to research substances other than conventional. 1 The purpose of this article was to review recent...
Background: Low doses of different ketamine enantiomers have demonstrated rapid behavioural and biological actions in animals with depressive-like behavior. However, some authors report different effects depending on model of depression and ketamine isomer used. Objective: Our primary aim was to evaluate the effect of ketamine enantiomers on depressive-like behavior, anhedonic-like behavior and...
Ketamine, a dissociative anesthetic, is widely utilized in both human and veterinary anesthesia. Its (S)-enantiomer, esketamine, is similarly employed for anesthesia and analgesia. The anesthetic effects of both ketamine and esketamine arise from their antagonism of the N-methyl-D-aspartate receptor (NMDAR). In field of psychiatry, the rapid-acting antidepressant properties of ketamine for...
Ketamine is a well-known and widely available general anesthetic from the 1960s that, in sub-anesthetic doses, has been adopted in a limited manner for the treatment of acute suicidality and treatment-resistant depression. Its short onset time and short duration of action make it feasible for use at outpatient clinics. In the US, it has a long history of off-label use and was officially...