PMID- 22676966 OWN - NLM STAT- MEDLINE DCOM- 20130821 LR - 20220330 IS - 1469-5111 (Electronic) IS - 1461-1457 (Print) IS - 1461-1457 (Linking) VI - 16 IP - 2 DP - 2013 Mar TI - Concomitant BDNF and sleep slow wave changes indicate ketamine-induced plasticity in major depressive disorder. PG - 301-11 LID - 10.1017/S1461145712000545 [doi] AB - The N-methyl-d-aspartate (NMDA) receptor antagonist ketamine has rapid antidepressant effects in treatment-resistant major depressive disorder (MDD). In rats, ketamine selectively increased electroencephalogram (EEG) slow wave activity (SWA) during non-rapid eye movement (REM) sleep and altered central brain-derived neurotrophic factor (BDNF) expression. Taken together, these findings suggest that higher SWA and BDNF levels may respectively represent electrophysiological and molecular correlates of mood improvement following ketamine treatment. This study investigated the acute effects of a single ketamine infusion on depressive symptoms, EEG SWA, individual slow wave parameters (surrogate markers of central synaptic plasticity) and plasma BDNF (a peripheral marker of plasticity) in 30 patients with treatment-resistant MDD. Montgomery-Asberg Depression Rating Scale scores rapidly decreased following ketamine. Compared to baseline, BDNF levels and early sleep SWA (during the first non-REM episode) increased after ketamine. The occurrence of high amplitude waves increased during early sleep, accompanied by an increase in slow wave slope, consistent with increased synaptic strength. Changes in BDNF levels were proportional to changes in EEG parameters. Intriguingly, this link was present only in patients who responded to ketamine treatment, suggesting that enhanced synaptic plasticity - as reflected by increased SWA, individual slow wave parameters and plasma BDNF - is part of the physiological mechanism underlying the rapid antidepressant effects of NMDA antagonists. Further studies are required to confirm the link found here between behavioural and synaptic changes, as well as to test the reliability of these central and peripheral biomarkers of rapid antidepressant response. FAU - Duncan, Wallace C AU - Duncan WC AD - Experimental Therapeutics and Pathophysiology Branch, Intramural Research Program, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, USA. FAU - Sarasso, Simone AU - Sarasso S FAU - Ferrarelli, Fabio AU - Ferrarelli F FAU - Selter, Jessica AU - Selter J FAU - Riedner, Brady A AU - Riedner BA FAU - Hejazi, Nadia S AU - Hejazi NS FAU - Yuan, Peixiong AU - Yuan P FAU - Brutsche, Nancy AU - Brutsche N FAU - Manji, Husseini K AU - Manji HK FAU - Tononi, Giulio AU - Tononi G FAU - Zarate, Carlos A AU - Zarate CA LA - eng GR - ZIA MH002857-07/Intramural NIH HHS/United States PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, N.I.H., Intramural PT - Research Support, Non-U.S. Gov't DEP - 20120607 PL - England TA - Int J Neuropsychopharmacol JT - The international journal of neuropsychopharmacology JID - 9815893 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Excitatory Amino Acid Antagonists) RN - 690G0D6V8H (Ketamine) RN - 7LJ087RS6F (Riluzole) SB - IM MH - Adult MH - Analysis of Variance MH - Brain Waves/*drug effects MH - Brain-Derived Neurotrophic Factor/*blood MH - Depressive Disorder, Major/blood/*drug therapy MH - Electroencephalography MH - Enzyme-Linked Immunosorbent Assay MH - Excitatory Amino Acid Antagonists/*therapeutic use MH - Female MH - Humans MH - Ketamine/*therapeutic use MH - Male MH - Middle Aged MH - Psychiatric Status Rating Scales MH - Riluzole/therapeutic use MH - Single-Blind Method MH - Sleep Stages/*drug effects MH - Statistics as Topic MH - Time Factors PMC - PMC3510337 MID - NIHMS402046 EDAT- 2012/06/09 06:00 MHDA- 2013/08/22 06:00 PMCR- 2014/03/01 CRDT- 2012/06/09 06:00 PHST- 2012/06/09 06:00 [entrez] PHST- 2012/06/09 06:00 [pubmed] PHST- 2013/08/22 06:00 [medline] PHST- 2014/03/01 00:00 [pmc-release] AID - S1461145712000545 [pii] AID - 10.1017/S1461145712000545 [doi] PST - ppublish SO - Int J Neuropsychopharmacol. 2013 Mar;16(2):301-11. doi: 10.1017/S1461145712000545. Epub 2012 Jun 7.