PMID- 17989282 OWN - NLM STAT- MEDLINE DCOM- 20071206 LR - 20220309 IS - 1529-2401 (Electronic) IS - 0270-6474 (Print) IS - 0270-6474 (Linking) VI - 27 IP - 45 DP - 2007 Nov 7 TI - The neuropeptide VGF produces antidepressant-like behavioral effects and enhances proliferation in the hippocampus. PG - 12156-67 AB - Brain-derived neurotrophic factor (BDNF) is upregulated in the hippocampus by antidepressant treatments, and BDNF produces antidepressant-like effects in behavioral models of depression. In our previous work, we identified genes induced by BDNF and defined their specific roles in hippocampal neuronal development and plasticity. To identify genes downstream of BDNF that may play roles in psychiatric disorders, we examined a subset of BDNF-induced genes also regulated by 5-HT (serotonin), which includes the neuropeptide VGF (nonacronymic). To explore the function of VGF in depression, we first investigated the expression of the neuropeptide in animal models of depression. VGF was downregulated in the hippocampus after both the learned helplessness and forced swim test (FST) paradigms. Conversely, VGF infusion in the hippocampus of mice subjected to FST reduced the time spent immobile for up to 6 d, thus demonstrating a novel role for VGF as an antidepressant-like agent. Recent evidence indicates that chronic treatment of rodents with antidepressants increases neurogenesis in the adult dentate gyrus and that neurogenesis is required for the behavioral effects of antidepressants. Our studies using [(3)H]thymidine and bromodeoxyuridine as markers of DNA synthesis indicate that chronic VGF treatment enhances proliferation of hippocampal progenitor cells both in vitro and in vivo with survival up to 21 d. By double immunocytochemical analysis of hippocampal neurons, we demonstrate that VGF increases the number of dividing cells that express neuronal markers in vitro. Thus, VGF may act downstream of BDNF and exert its effects as an antidepressant-like agent by enhancing neurogenesis in the hippocampus. FAU - Thakker-Varia, Smita AU - Thakker-Varia S AD - Department of Neuroscience and Cell Biology, University of Medicine and Dentistry of New Jersey, Robert Wood Johnson Medical School, Piscataway, New Jersey 08854-5635, USA. FAU - Krol, Jennifer Jernstedt AU - Krol JJ FAU - Nettleton, Jacob AU - Nettleton J FAU - Bilimoria, Parizad M AU - Bilimoria PM FAU - Bangasser, Debra A AU - Bangasser DA FAU - Shors, Tracey J AU - Shors TJ FAU - Black, Ira B AU - Black IB FAU - Alder, Janet AU - Alder J LA - eng GR - R01 MH059970-05/MH/NIMH NIH HHS/United States GR - R01 MH059970-06/MH/NIMH NIH HHS/United States GR - R01 MH059970-07/MH/NIMH NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - United States TA - J Neurosci JT - The Journal of neuroscience : the official journal of the Society for Neuroscience JID - 8102140 RN - 0 (Antidepressive Agents) RN - 0 (Neuropeptides) RN - 0 (VGF peptide) SB - IM MH - Animals MH - Antidepressive Agents/*administration & dosage/antagonists & inhibitors/metabolism MH - Behavior, Animal/physiology MH - Cell Differentiation/physiology MH - *Cell Proliferation MH - Depressive Disorder/pathology/*therapy MH - Down-Regulation/physiology MH - Hippocampus/*cytology/metabolism/*physiology MH - Male MH - Mice MH - Neuronal Plasticity/physiology MH - Neurons/cytology/physiology MH - Neuropeptides/antagonists & inhibitors/biosynthesis/*physiology MH - Rats MH - Rats, Sprague-Dawley PMC - PMC3363962 MID - NIHMS310626 EDAT- 2007/11/09 09:00 MHDA- 2007/12/07 09:00 PMCR- 2008/05/07 CRDT- 2007/11/09 09:00 PHST- 2007/11/09 09:00 [pubmed] PHST- 2007/12/07 09:00 [medline] PHST- 2007/11/09 09:00 [entrez] PHST- 2008/05/07 00:00 [pmc-release] AID - 27/45/12156 [pii] AID - 3281026 [pii] AID - 10.1523/JNEUROSCI.1898-07.2007 [doi] PST - ppublish SO - J Neurosci. 2007 Nov 7;27(45):12156-67. doi: 10.1523/JNEUROSCI.1898-07.2007.