Major depressive disorder is a mental disorder affecting millions of people worldwide. A considerable proportion of patients demonstrate a lack of response to conventional treatment. With the recent introduction of esketamine, a new treatment option has been approved for treatment-resistant depression. Although the medication is efficacious in a substantial portion of cases, rare, but possibly...
Dissociative experiences are considered undesirable ketamine's adverse events. However, they might be crucial for ketamine's antidepressant effects, at least in some depression subtypes. Current understandings of ketamine's therapeutic potentials converge on the so-called "relaxed prior hypothesis," suggesting that glutamatergic blockage up-weights bottom-up surprising somatosensory/affective...
The rising prevalence of mental health disorders in adolescents, compounded by treatment resistance, underscores the need for innovative interventions. Ketamine, recognized for its rapid antidepressant and anti-suicidal effects in adults, has recently emerged as a potential treatment for adolescents with treatment-resistant depression and suicidality. This paper aims to highlight key elements...
Esketamine (ESK), an intravenous anesthetic, exerts antidepressant effects; however, the antidepression mechanism is not clear. The aim of this study was to explore whether microglial cannabinoid type 2 (CB2) receptor and protein kinase C (PKC) are involved in the antidepressant effects of ESK. In this investigation, lipopolysaccharide (LPS) was used to stimulate BV-2 microglia to mimic...
Social cognitive deficits and social behavior impairments are common in major depressive disorder (MDD) and affect the quality of life and recovery of patients. This review summarizes the impact of standard and novel treatments on social functioning in MDD and highlights the potential of combining different approaches to enhance their effectiveness. Standard treatments, such as antidepressants,...
Esketamine nasal spray has emerged as a promising rapid-relief therapy for treatment-resistant depression (TRD) and suicide prevention. This review examines the chemical structure and pharmacodynamics of esketamine, highlighting its primary action on NMDA receptors and additional effects on AMPA receptors, opioid receptors, monoaminergic receptors, and inflammatory pathways. Despite the...
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Modern electroconvulsive therapy (ECT) and ketamine currently represent the most effective treatment options in depressed patients showing non-response to two or more trials of antidepressants. Recently, large sample head-to-head comparisons of intravenous ketamine versus ECT for treatment-resistant depression (TRD) have fuelled the debate on which therapy might be more effective. However, the...
The efficacy and safety of esketamine nasal spray (ESK) were established in registration trials in patients with treatment-resistant depression (TRD). This French real-world study aimed to describe the treatment patterns, effectiveness, and safety of ESK in TRD patients over a 12-month follow-up. This study used secondary data from patient files of hospital-based psychiatrists and started...