PMID- 25307211 OWN - NLM STAT- MEDLINE DCOM- 20160421 LR - 20181202 IS - 1399-5618 (Electronic) IS - 1398-5647 (Linking) VI - 17 IP - 3 DP - 2015 May TI - Effects of mood-stabilizing drugs on dendritic outgrowth and synaptic protein levels in primary hippocampal neurons. PG - 278-90 LID - 10.1111/bdi.12262 [doi] AB - OBJECTIVES: Mood-stabilizing drugs, such as lithium (Li) and valproate (VPA), are widely used for the treatment of bipolar disorder, a disease marked by recurrent episodes of mania and depression. Growing evidence suggests that Li exerts neurotrophic and neuroprotective effects, leading to an increase in neural plasticity. The present study investigated whether other mood-stabilizing drugs produce similar effects in primary hippocampal neurons. METHODS: The effects of the mood-stabilizing drugs Li, VPA, carbamazepine (CBZ), and lamotrigine (LTG) on hippocampal dendritic outgrowth were examined. Western blotting analysis was used to measure the expression of synaptic proteins - that is, brain-derived neurotrophic factor (BDNF), postsynaptic density protein-95 (PSD-95), neuroligin 1 (NLG1), beta-neurexin, and synaptophysin (SYP). To determine neuroprotective effects, we used a B27-deprivation cytotoxicity model which causes hippocampal cell death upon removal of B27 from the culture medium. RESULTS: Li (0.5-2.0 mM), VPA (0.5-2.0 mM), CBZ (0.01-0.10 mM), and LTG (0.01-0.10 mM) significantly increased dendritic outgrowth. The neurotrophic effect of Li and VPA was blocked by inhibition of phosphatidylinositol 3-kinase, extracellular signal-regulated kinase, and protein kinase A signaling; the effects of CBZ and LTG were not affected by inhibition of these signaling pathways. Li, VPA, and CBZ prevented B27 deprivation-induced decreases in BDNF, PSD-95, NLG1, beta-neurexin, and SYP levels, whereas LTG did not. CONCLUSIONS: These results suggest that Li, VPA, CBZ, and LTG exert neurotrophic effects by promoting dendritic outgrowth; however, the mechanism of action differs. Furthermore, certain mood-stabilizing drugs may exert neuroprotective effects by enhancing synaptic protein levels against cytotoxicity in hippocampal cultures. CI - (c) 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd. FAU - Park, Sung Woo AU - Park SW AD - Paik Institute for Clinical Research, Inje University, Busan, Korea; Department of Health Science and Technology, Graduate School of Inje University, Busan, Korea. FAU - Lee, Jung Goo AU - Lee JG FAU - Seo, Mi Kyoung AU - Seo MK FAU - Cho, Hye Yeon AU - Cho HY FAU - Lee, Chan Hong AU - Lee CH FAU - Lee, Ji Heon AU - Lee JH FAU - Lee, Bong Ju AU - Lee BJ FAU - Baek, Jun Hyung AU - Baek JH FAU - Seol, Wongi AU - Seol W FAU - Kim, Young Hoon AU - Kim YH LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20141013 PL - Denmark TA - Bipolar Disord JT - Bipolar disorders JID - 100883596 RN - 0 (Antimanic Agents) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Cell Adhesion Molecules, Neuronal) RN - 0 (Disks Large Homolog 4 Protein) RN - 0 (Dlg4 protein, rat) RN - 0 (Intracellular Signaling Peptides and Proteins) RN - 0 (Lithium Compounds) RN - 0 (Membrane Proteins) RN - 0 (Neuroprotective Agents) RN - 0 (Synaptophysin) RN - 0 (Syp protein, rat) RN - 0 (Triazines) RN - 0 (neuroligin 1) RN - 614OI1Z5WI (Valproic Acid) RN - EC 2.7.1.- (Phosphatidylinositol 3-Kinases) RN - U3H27498KS (Lamotrigine) SB - IM MH - Animals MH - Antimanic Agents/*pharmacology MH - *Bipolar Disorder MH - Brain-Derived Neurotrophic Factor/drug effects/metabolism MH - Cell Adhesion Molecules, Neuronal/drug effects/metabolism MH - Dendrites/*drug effects MH - Disks Large Homolog 4 Protein MH - Hippocampus/cytology MH - Intracellular Signaling Peptides and Proteins/drug effects/metabolism MH - Lamotrigine MH - Lithium Compounds/*pharmacology MH - Membrane Proteins/drug effects/metabolism MH - Neurons/*drug effects MH - Neuroprotective Agents MH - Phosphatidylinositol 3-Kinases MH - Rats MH - Synaptophysin/drug effects/metabolism MH - Triazines/*pharmacology MH - Valproic Acid/*pharmacology OTO - NOTNLM OT - dendritic outgrowth OT - mood-stabilizing drugs OT - neural plasticity OT - signaling OT - synaptic proteins EDAT- 2014/10/14 06:00 MHDA- 2016/04/22 06:00 CRDT- 2014/10/14 06:00 PHST- 2014/03/12 00:00 [received] PHST- 2014/07/23 00:00 [accepted] PHST- 2014/10/14 06:00 [entrez] PHST- 2014/10/14 06:00 [pubmed] PHST- 2016/04/22 06:00 [medline] AID - 10.1111/bdi.12262 [doi] PST - ppublish SO - Bipolar Disord. 2015 May;17(3):278-90. doi: 10.1111/bdi.12262. Epub 2014 Oct 13.