PMID- 25539510 OWN - NLM STAT- MEDLINE DCOM- 20150930 LR - 20220318 IS - 1469-5111 (Electronic) IS - 1461-1457 (Print) IS - 1461-1457 (Linking) VI - 18 IP - 1 DP - 2014 Oct 31 TI - BDNF release is required for the behavioral actions of ketamine. LID - pyu033 [pii] LID - 10.1093/ijnp/pyu033 [doi] AB - BACKGROUND: Recent studies demonstrate that the rapid antidepressant ketamine increases spine number and function in the medial prefrontal cortex (mPFC), and that these effects are dependent on activation of glutamate alpha-amino-3-hydroxy-5-methylisoxazole-4-propionic acid (AMPA) receptors and brain-derived neurotrophic factor (BDNF). In vitro studies also show that activation of AMPA receptors stimulates BNDF release via activation of L-type voltage-dependent calcium channels (VDCC). METHODS: Based on this evidence, we examined the role of BDNF release and the impact of L-type VDCCs on the behavioral actions of ketamine. RESULTS: The results demonstrate that infusion of a neutralizing BDNF antibody into the mPFC blocks the behavioral effects of ketamine in the forced swim test (FST). In addition, we show that pretreatment with nifedipine or verapamil, two structurally-different L-type calcium channel antagonists, blocks the behavioral effects of ketamine in the FST. Finally, we show that ketamine treatment stimulates BDNF release in primary cortical neurons and that this effect is blocked by inhibition of AMPA receptors or L-type VDCCs. CONCLUSIONS: Taken together, these results indicate that the antidepressant effects of ketamine are mediated by activation of L-type VDCCs and the release of BDNF. They further elucidate the cellular mechanisms underlying this novel rapid-acting antidepressant. CI - (c) The Author 2014. Published by Oxford University Press on behalf of CINP. FAU - Lepack, Ashley E AU - Lepack AE AD - Departments of Psychiatry and Neurobiology, Yale University School of Medicine, New Haven, CT (Drs Lepack, Fuchikami, Dwyer, Banasr, and Duman). FAU - Fuchikami, Manabu AU - Fuchikami M AD - Departments of Psychiatry and Neurobiology, Yale University School of Medicine, New Haven, CT (Drs Lepack, Fuchikami, Dwyer, Banasr, and Duman). FAU - Dwyer, Jason M AU - Dwyer JM AD - Departments of Psychiatry and Neurobiology, Yale University School of Medicine, New Haven, CT (Drs Lepack, Fuchikami, Dwyer, Banasr, and Duman). FAU - Banasr, Mounira AU - Banasr M AD - Departments of Psychiatry and Neurobiology, Yale University School of Medicine, New Haven, CT (Drs Lepack, Fuchikami, Dwyer, Banasr, and Duman). FAU - Duman, Ronald S AU - Duman RS AD - Departments of Psychiatry and Neurobiology, Yale University School of Medicine, New Haven, CT (Drs Lepack, Fuchikami, Dwyer, Banasr, and Duman). ronald.duman@yale.edu. LA - eng GR - R01 MH093897/MH/NIMH NIH HHS/United States GR - R01 MH105910/MH/NIMH NIH HHS/United States GR - MH093897/MH/NIMH NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20141031 PL - England TA - Int J Neuropsychopharmacol JT - The international journal of neuropsychopharmacology JID - 9815893 RN - 0 (Antidepressive Agents) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Calcium Channel Blockers) RN - 0 (Calcium Channels, L-Type) RN - 0 (Receptors, AMPA) RN - 690G0D6V8H (Ketamine) RN - CJ0O37KU29 (Verapamil) RN - I9ZF7L6G2L (Nifedipine) SB - IM EIN - Int J Neuropsychopharmacol. 2016 Apr 27;:. PMID: 27207904 MH - Animals MH - Antidepressive Agents/*pharmacology MH - Brain-Derived Neurotrophic Factor/*metabolism MH - Calcium Channel Blockers/pharmacology MH - Calcium Channels, L-Type/metabolism MH - Cells, Cultured MH - Depressive Disorder/drug therapy/physiopathology MH - Ketamine/*pharmacology MH - Male MH - Neurons/drug effects/physiology MH - Nifedipine/pharmacology MH - Prefrontal Cortex/drug effects/physiopathology MH - Rats, Sprague-Dawley MH - Receptors, AMPA/antagonists & inhibitors/metabolism MH - Verapamil/pharmacology PMC - PMC4368871 MID - NIHMS686432 OTO - NOTNLM OT - BDNF OT - L-type VDCC OT - depression OT - glutamate OT - ketamine EDAT- 2014/12/30 06:00 MHDA- 2015/10/01 06:00 PMCR- 2014/12/19 CRDT- 2014/12/25 06:00 PHST- 2014/12/25 06:00 [entrez] PHST- 2014/12/30 06:00 [pubmed] PHST- 2015/10/01 06:00 [medline] PHST- 2014/12/19 00:00 [pmc-release] AID - pyu033 [pii] AID - 10.1093/ijnp/pyu033 [doi] PST - epublish SO - Int J Neuropsychopharmacol. 2014 Oct 31;18(1):pyu033. doi: 10.1093/ijnp/pyu033.