PMID- 18654637 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20100610 LR - 20220331 IS - 1570-159X (Print) IS - 1875-6190 (Electronic) IS - 1570-159X (Linking) VI - 4 IP - 4 DP - 2006 Oct TI - Neurochemistry of the nucleus accumbens and its relevance to depression and antidepressant action in rodents. PG - 277-91 AB - There is accumulating evidence that the nucleus accumbens (NAc) plays an important role in the pathophysiology of depression. Given that clinical depression is marked by anhedonia (diminished interest or pleasure), dysfunction of the brain reward pathway has been suggested as contributing to the pathophysiology of depression.Since the NAc is the center of reward and learning, it is hypothesized that anhedonia might be produced by hampering the function of the NAc. Indeed, it has been reported that stress, drug exposure and drug withdrawal, all of which produce a depressive-phenotype, alter various functions within the NAc, leading to inhibited dopaminergic activity in the NAc.In this review, we describe various factors as possible candidates within the NAc for the initiation of depressive symptoms. First, we discuss the roles of several neurotransmitters and neuropeptides in the functioning of the NAc, including dopamine, glutamate, gamma-aminobutyric acid (GABA), acetylcholine, serotonin, dynorphin, enkephaline, brain-derived neurotrophic factor (BDNF), cAMP response element-binding protein (CREB), melanin-concentrating hormone (MCH) and cocaine- and amphetamine-regulated transcript (CART). Second, based on previous studies, we propose hypothetical relationships among these substances and the shell and core subregions of the NAc. FAU - Shirayama, Yukihiko AU - Shirayama Y AD - Department of Neuropsychiatry, Faculty of Medicine, Tottori University, Yonago, Japan. shirayama@rapid.ocn.ne.jp FAU - Chaki, Shigeyuki AU - Chaki S LA - eng PT - Journal Article PL - United Arab Emirates TA - Curr Neuropharmacol JT - Current neuropharmacology JID - 101157239 PMC - PMC2475798 OTO - NOTNLM OT - Depression OT - acetylcholine OT - cAMP response element-binding protein (CREB) OT - dopamine OT - dynorphin OT - glutamate OT - nucleus accumbens OT - gamma-aminobutyric acid (GABA) EDAT- 2008/07/26 09:00 MHDA- 2008/07/26 09:01 PMCR- 2007/10/01 CRDT- 2008/07/26 09:00 PHST- 2005/06/30 00:00 [received] PHST- 2005/09/06 00:00 [revised] PHST- 2006/02/08 00:00 [accepted] PHST- 2008/07/26 09:00 [pubmed] PHST- 2008/07/26 09:01 [medline] PHST- 2008/07/26 09:00 [entrez] PHST- 2007/10/01 00:00 [pmc-release] AID - CN-4-4-277 [pii] AID - 10.2174/157015906778520773 [doi] PST - ppublish SO - Curr Neuropharmacol. 2006 Oct;4(4):277-91. doi: 10.2174/157015906778520773.