PMID- 24296153 OWN - NLM STAT- MEDLINE DCOM- 20141203 LR - 20140303 IS - 1873-7064 (Electronic) IS - 0028-3908 (Linking) VI - 79 DP - 2014 Apr TI - Effects of antidepressant drugs on synaptic protein levels and dendritic outgrowth in hippocampal neuronal cultures. PG - 222-33 LID - S0028-3908(13)00565-0 [pii] LID - 10.1016/j.neuropharm.2013.11.019 [doi] AB - The alteration of hippocampal plasticity has been proposed to play a critical role in both the pathophysiology and treatment of depression. In this study, the ability of different classes of antidepressant drugs (escitalopram, fluoxetine, paroxetine, sertraline, imipramine, tranylcypromine, and tianeptine) to mediate the expression of synaptic proteins and dendritic outgrowth in rat hippocampal neurons was investigated under toxic conditions induced by B27 deprivation, which causes hippocampal cell death. Postsynaptic density protein-95 (PSD-95), brain-derived neurotrophic factor (BDNF), and synaptophysin (SYP) levels were evaluated using Western blot analyses. Additionally, dendritic outgrowth was examined to determine whether antidepressant drugs affect the dendritic morphology of hippocampal neurons in B27-deprived cultures. Escitalopram, fluoxetine, paroxetine, sertraline, imipramine, tranylcypromine, and tianeptine significantly prevented B27 deprivation-induced decreases in levels of PSD-95, BDNF, and SYP. Moreover, the independent application of fluoxetine, paroxetine, and sertraline significantly increased levels of BDNF under normal conditions. All antidepressant drugs significantly increased the total outgrowth of hippocampal dendrites under B27 deprivation. Specific inhibitors of calcium/calmodulin kinase II (CaMKII), KN-93, protein kinase A (PKA), H-89, or phosphatidylinositol 3-kinase (PI3K), LY294002, significantly decreased the effects of antidepressant drugs on dendritic outgrowth, whereas this effect was observed only with tianeptine for the PI3K inhibitor. Taken together, these results suggest that certain antidepressant drugs can enhance synaptic protein levels and encourage dendritic outgrowth in hippocampal neurons. Furthermore, effects on dendritic outgrowth likely require CaMKII, PKA, or PI3K signaling pathways. The observed effects may be may be due to chronic treatment with antidepressant drugs. CI - Copyright (c) 2013 Elsevier Ltd. All rights reserved. FAU - Seo, Mi Kyoung AU - Seo MK AD - Paik Institute for Clinical Research, Inje University, Busan, Republic of Korea. FAU - Lee, Chan Hong AU - Lee CH AD - Paik Institute for Clinical Research, Inje University, Busan, Republic of Korea. FAU - Cho, Hye Yeon AU - Cho HY AD - Paik Institute for Clinical Research, Inje University, Busan, Republic of Korea. FAU - Lee, Jung Goo AU - Lee JG AD - Paik Institute for Clinical Research, Inje University, Busan, Republic of Korea; Department of Psychiatry, School of Medicine, Haeundae Paik Hospital, Republic of Korea; Department of Health Science and Technology, Graduate School of Inje University, Busan, Republic of Korea. FAU - Lee, Bong Ju AU - Lee BJ AD - Department of Psychiatry, School of Medicine, Haeundae Paik Hospital, Republic of Korea. FAU - Kim, Ji Eun AU - Kim JE AD - Department of Psychiatry, School of Medicine, Haeundae Paik Hospital, Republic of Korea. FAU - Seol, Wongi AU - Seol W AD - InAm Neuroscience Research Center, Wonkwang University, Sanbon Hospital, Gunpo, Republic of Korea. FAU - Kim, Young Hoon AU - Kim YH AD - Paik Institute for Clinical Research, Inje University, Busan, Republic of Korea; Department of Psychiatry, School of Medicine, Haeundae Paik Hospital, Republic of Korea; Department of Health Science and Technology, Graduate School of Inje University, Busan, Republic of Korea. Electronic address: neuro109@hanmail.net. FAU - Park, Sung Woo AU - Park SW AD - Paik Institute for Clinical Research, Inje University, Busan, Republic of Korea; Department of Health Science and Technology, Graduate School of Inje University, Busan, Republic of Korea. Electronic address: swpark@inje.ac.kr. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20131201 PL - England TA - Neuropharmacology JT - Neuropharmacology JID - 0236217 RN - 0 (Antidepressive Agents) RN - 0 (Antidepressive Agents, Second-Generation) RN - 0 (Antidepressive Agents, Tricyclic) RN - 0 (Nerve Tissue Proteins) RN - 0 (Thiazepines) RN - 01K63SUP8D (Fluoxetine) RN - 0DHU5B8D6V (Citalopram) RN - 0T493YFU8O (tianeptine) RN - 3E3V44J4Z9 (Tranylcypromine) RN - 41VRH5220H (Paroxetine) RN - OGG85SX4E4 (Imipramine) RN - QUC7NX6WMB (Sertraline) SB - IM MH - Animals MH - Antidepressive Agents/*pharmacology MH - Antidepressive Agents, Second-Generation/pharmacology MH - Antidepressive Agents, Tricyclic/pharmacology MH - Cell Enlargement/drug effects MH - Cells, Cultured MH - Citalopram/pharmacology MH - Dendrites/*drug effects/physiology MH - Fluoxetine/pharmacology MH - Hippocampus/*drug effects/physiology MH - Imipramine/pharmacology MH - Nerve Tissue Proteins/*drug effects MH - Neurons/*drug effects/physiology MH - Paroxetine/pharmacology MH - Rats MH - Rats, Sprague-Dawley MH - Sertraline/pharmacology MH - Thiazepines/pharmacology MH - Tranylcypromine/pharmacology OTO - NOTNLM OT - Antidepressant drugs OT - Dendritic outgrowth OT - Hippocampal plasticity OT - Signaling OT - Synaptic proteins EDAT- 2013/12/04 06:00 MHDA- 2014/12/15 06:00 CRDT- 2013/12/04 06:00 PHST- 2013/04/08 00:00 [received] PHST- 2013/11/07 00:00 [revised] PHST- 2013/11/21 00:00 [accepted] PHST- 2013/12/04 06:00 [entrez] PHST- 2013/12/04 06:00 [pubmed] PHST- 2014/12/15 06:00 [medline] AID - S0028-3908(13)00565-0 [pii] AID - 10.1016/j.neuropharm.2013.11.019 [doi] PST - ppublish SO - Neuropharmacology. 2014 Apr;79:222-33. doi: 10.1016/j.neuropharm.2013.11.019. Epub 2013 Dec 1.