Ketamine has gained prominence as one of the most effective therapeutic options in unipolar treatment-resistant depression (TRD). However, most studies related to the antidepressant action of ketamine used intravenous (IV) or intranasal (IN) administration. The subcutaneous (SC) route of administration is a promising alternative, as it results in plasma levels comparable to IV, causes fewer...
CNS Spectrums2025Ana Rodríguez Lorente, María Pilar Campos-Navarro, Ángela Gil Montoya et al.
Abstract Objectives This proof-of-concept study aimed to assess the impact of intranasal esketamine (ESK-IN) in brain volume and neurofilament light chain (sNfL) over 6-months in patients with treatment resistant depression (TDR). Methods Seven TRD patients received ESK-IN while continuing oral antidepressants. Clinical evaluations were conducted at baseline, 1, 3, and 6 months, with MRI scans...
If available in one's practice area, augmenting current medication therapy with esketamine results in greater rates of remission for treatment resistant depression as compared with quetiapine1.
Intranasal Esketamine is an effective rapid-acting antidepressant currently used to treat treatment-resistant depression. Artificial intelligence is another emerging tool in medicine, but little is known about the effectiveness of combining these innovations in psychiatry. This case report presents the outcome of a 37-year-old patient who received intranasal Esketamine treatment (84 mg) and...
Major Depressive Disorder (MDD) and Treatment-Resistant Depression (TRD) are debilitating psychiatric conditions associated with significant psychosocial and economic burdens. Conventional antidepressants, particularly SSRIs and SNRIs, often produce inadequate responses and cause sexual dysfunction, contributing to poor adherence and diminished quality of life. This review aims to evaluate the...
Treatment-Resistant Depression (TRD) remains a major challenge in the management of Major Depressive Disorder (MDD). Esketamine, the S-enantiomer of ketamine and a glutamatergic modulator, was approved by the FDA and EMA for TRD in 2019. Beyond its rapid antidepressant effects, esketamine may enhance neuroplasticity, facilitating the reconnection with emotional and cognitive processes,...
Nasal esketamine has demonstrated efficacy in the management of treatment-resistant depression and psychiatric emergency due to major depression. This study investigates acceptance and awareness of esketamine as a depression treatment option, focusing on factors that influence patients' acceptance, including adherence to current medication regimens, regardless of prior esketamine exposure. This...
Ketamine and esketamine have demonstrated rapid, short-term antidepressant effects in major depressive disorder (MDD), but their relative safety remains unclear. This review aims to update the evidence on the safety of two agents for MDD and indirectly compare their safety and tolerability. We systematically searched PubMed, PsycINFO, Embase, and Cochrane databases up to 1 May 2025. Eligible...
Ketamine's antidepressant effects have been linked to its modulation of glutamatergic neurotransmission and synaptic plasticity. However, the precise roles of both glutamate (Glu) levels and brain-derived neurotrophic factor (BDNF) in this process remain incompletely understood. This study examined the relationship between ketamine-induced changes in Glu levels and peripheral BDNF levels using...
Depression affects approximately 5.7% of adults worldwide, and around one-third of these individuals develop treatment-resistant depression (TRD). Intravenous (IV) ketamine and esketamine (administered IV or intranasally (IN)) are novel treatment options for TRD; however, only IN esketamine currently holds FDA approval. Compare the acute effectiveness of IV ketamine with esketamine (IV or IN)...