PMID- 35182519 OWN - NLM STAT- MEDLINE DCOM- 20220425 LR - 20220425 IS - 1873-2968 (Electronic) IS - 0006-2952 (Linking) VI - 198 DP - 2022 Apr TI - Is (R)-ketamine a potential therapeutic agent for treatment-resistant depression with less detrimental side effects? A review of molecular mechanisms underlying ketamine and its enantiomers. PG - 114963 LID - S0006-2952(22)00057-0 [pii] LID - 10.1016/j.bcp.2022.114963 [doi] AB - Approximately one-third of individuals with major depressive disorder are resistant to conventional antidepressants (i.e., monoamine-based therapies), and, even among respondents, a proper therapeutic effect may require weeks of treatment. Ketamine, a racemic mixture of the two enantiomers, (R)-ketamine and (S)-ketamine, is an N-methyl-d-aspartate receptor (NMDAR) antagonist and has been shown to have rapid-acting antidepressant properties in patients with treatment-resistant depression (TRD). Although (R)-ketamine has a lower affinity for NMDAR, it presents greater potency and longer-lasting antidepressant properties, with no major side effects, than racemic ketamine or (S)-ketamine in preclinical findings. Thereby, ketamine and its enantiomers have not only an antagonistic effect on NMDAR but also a strong synaptogenic-modulatory effect, which is impaired in TRD pathophysiology. In this review, we summarize the current evidence regarding the modulation of neurotransmission, neuroplasticity, and neural network activity as putative mechanisms of these rapid-acting antidepressants, highlighting differences on intracellular signaling pathways of synaptic proteins such as mammalian target of rapamycin (mTOR), extracellular signal-regulated kinase (ERK) and brain-derived neurotrophic factor (BDNF). In addition, we discuss probable mechanisms involved in the side effects of ketamine and its enantiomers. CI - Copyright (c) 2022 Elsevier Inc. All rights reserved. FAU - Scotton, Ellen AU - Scotton E AD - Laboratorio de Psiquiatria Molecular, Hospital de Clinicas de Porto Alegre, Porto Alegre, RS, Brazil; Department of Pharmacology, Programa de Pos-Graduacao em Farmacologia e Terapeutica, UFRGS, Porto Alegre, RS, Brazil. FAU - Antqueviezc, Barbara AU - Antqueviezc B AD - Laboratorio de Psiquiatria Molecular, Hospital de Clinicas de Porto Alegre, Porto Alegre, RS, Brazil. FAU - Vasconcelos, Mailton Franca de AU - Vasconcelos MF AD - Laboratorio de Psiquiatria Molecular, Hospital de Clinicas de Porto Alegre, Porto Alegre, RS, Brazil; Instituto de Psicologia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil. FAU - Dalpiaz, Giovana AU - Dalpiaz G AD - Laboratorio de Psiquiatria Molecular, Hospital de Clinicas de Porto Alegre, Porto Alegre, RS, Brazil. FAU - Paul Gea, Luiza AU - Paul Gea L AD - Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, ON, Canada. FAU - Ferraz Goularte, Jeferson AU - Ferraz Goularte J AD - Laboratorio de Psiquiatria Molecular, Hospital de Clinicas de Porto Alegre, Porto Alegre, RS, Brazil; Programa de Pos-Graduacao em Psiquiatria e Ciencias do Comportamento, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil. Electronic address: jefgoularte@hcpa.edu.br. FAU - Colombo, Rafael AU - Colombo R AD - Laboratorio de Psiquiatria Molecular, Hospital de Clinicas de Porto Alegre, Porto Alegre, RS, Brazil; Programa de Pos-Graduacao em Biotecnologia, Universidade de Caxias do Sul (UCS), Caxias do Sul, RS, Brazil; Programa de Pos-Graduacao em Ciencias da Saude, Universidade de Caxias do Sul (UCS), Caxias do Sul, RS, Brazil. Electronic address: rcolombo1@ucs.br. FAU - Ribeiro Rosa, Adriane AU - Ribeiro Rosa A AD - Laboratorio de Psiquiatria Molecular, Hospital de Clinicas de Porto Alegre, Porto Alegre, RS, Brazil; Department of Pharmacology, Programa de Pos-Graduacao em Farmacologia e Terapeutica, UFRGS, Porto Alegre, RS, Brazil; Programa de Pos-Graduacao em Psiquiatria e Ciencias do Comportamento, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil. Electronic address: arrosa@hcpa.edu.br. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20220216 PL - England TA - Biochem Pharmacol JT - Biochemical pharmacology JID - 0101032 RN - 0 (Antidepressive Agents) RN - 0 (Receptors, N-Methyl-D-Aspartate) RN - 690G0D6V8H (Ketamine) SB - IM MH - Antidepressive Agents/adverse effects MH - Depression/metabolism MH - *Depressive Disorder, Major/drug therapy MH - Humans MH - *Ketamine/adverse effects MH - Receptors, N-Methyl-D-Aspartate/metabolism OTO - NOTNLM OT - (R)-ketamine OT - (S)-ketamine OT - Ketamine enantiomers OT - Neuroplasticity OT - Racemic ketamine OT - Treatment resistant depression EDAT- 2022/02/20 06:00 MHDA- 2022/04/26 06:00 CRDT- 2022/02/19 20:09 PHST- 2021/12/14 00:00 [received] PHST- 2022/02/09 00:00 [revised] PHST- 2022/02/10 00:00 [accepted] PHST- 2022/02/20 06:00 [pubmed] PHST- 2022/04/26 06:00 [medline] PHST- 2022/02/19 20:09 [entrez] AID - S0006-2952(22)00057-0 [pii] AID - 10.1016/j.bcp.2022.114963 [doi] PST - ppublish SO - Biochem Pharmacol. 2022 Apr;198:114963. doi: 10.1016/j.bcp.2022.114963. Epub 2022 Feb 16.