PMID- 25209309 OWN - NLM STAT- MEDLINE DCOM- 20150723 LR - 20141117 IS - 1460-9568 (Electronic) IS - 0953-816X (Linking) VI - 40 IP - 10 DP - 2014 Nov TI - Burst-firing patterns in the prefrontal cortex underlying the neuronal mechanisms of depression probed by antidepressants. PG - 3538-47 LID - 10.1111/ejn.12725 [doi] AB - Major depressive disorder (MDD) is one of the leading causes of morbidity worldwide. Several antidepressants have been widely prescribed to treat patients with MDD. However, neuronal changes in brain function remain poorly understood. Based on the standard chronic mild stress (CMS) model of depression in mice, we investigated the neuronal mechanisms of the classic antidepressant, fluoxetine, and a new compound (termed YY-23 in this study) derived from furostanol saponin. The results showed that both fluoxetine and YY-23 normalized CMS-induced depressive-like behaviors. YY-23 caused antidepressant-like behaviors with a faster action than fluoxetine. In terms of in vivo neuronal activities, a CMS-induced decrease in spontaneous firing in burst of medial prefrontal cortex pyramidal neurons rather than ventral tegmental area (VTA) was reversed by the chronic administration of fluoxetine and YY-23. We also found that CMS-induced deficits in the expression of prefrontal brain-derived neurotrophic factor (BDNF) were also restored by chronically administering YY-23 and fluoxetine. In addition, chronic administration of fluoxetine rather than YY-23 resulted in an improvement of antidepressive-like behavior and a change of burst firing of VTA in control-housed animals, indicating that the pharmacological effects of YY-23 were specific to CMS-treated animals. Together, these data suggest that the burst-firing patterns of pyramidal cells may be a neural biomarker of depressive-like mice and antidepressant action. Furthermore, synaptic transmission and BDNF may contribute to the rapid antidepressant-like effects on depression. CI - (c) 2014 Federation of European Neuroscience Societies and John Wiley & Sons Ltd. FAU - Guo, Fei AU - Guo F AD - Key Laboratory of Receptor Research, Shanghai Institute of Materia Medical, Chinese Academy of Sciences, Shanghai, 201203, China. FAU - Zhang, Qi AU - Zhang Q FAU - Zhang, Bing AU - Zhang B FAU - Fu, Zhiwen AU - Fu Z FAU - Wu, Bin AU - Wu B FAU - Huang, Chenggang AU - Huang C FAU - Li, Yang AU - Li Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140911 PL - France TA - Eur J Neurosci JT - The European journal of neuroscience JID - 8918110 RN - 0 (Antidepressive Agents) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 01K63SUP8D (Fluoxetine) SB - IM MH - Action Potentials/drug effects MH - Animals MH - Antidepressive Agents/pharmacology MH - Brain-Derived Neurotrophic Factor/metabolism MH - Chronic Disease MH - Depressive Disorder/*drug therapy/*physiopathology MH - Disease Models, Animal MH - Fluoxetine/pharmacology MH - Male MH - Mice MH - Prefrontal Cortex/*drug effects/*physiopathology MH - Pyramidal Cells/drug effects/physiopathology MH - Random Allocation MH - Stress, Psychological MH - Ventral Tegmental Area/drug effects/physiopathology OTO - NOTNLM OT - brain-derived neurotrophic factor OT - medial prefrontal cortex OT - mouse OT - ventral tegmental area EDAT- 2014/09/12 06:00 MHDA- 2015/07/24 06:00 CRDT- 2014/09/12 06:00 PHST- 2014/02/26 00:00 [received] PHST- 2014/08/15 00:00 [revised] PHST- 2014/08/15 00:00 [accepted] PHST- 2014/09/12 06:00 [entrez] PHST- 2014/09/12 06:00 [pubmed] PHST- 2015/07/24 06:00 [medline] AID - 10.1111/ejn.12725 [doi] PST - ppublish SO - Eur J Neurosci. 2014 Nov;40(10):3538-47. doi: 10.1111/ejn.12725. Epub 2014 Sep 11.