PMID- 25296946 OWN - NLM STAT- MEDLINE DCOM- 20160118 LR - 20161125 IS - 1440-1819 (Electronic) IS - 1323-1316 (Linking) VI - 69 IP - 5 DP - 2015 May TI - Psychopharmacology of atypical antipsychotic drugs: From the receptor binding profile to neuroprotection and neurogenesis. PG - 243-58 LID - 10.1111/pcn.12242 [doi] AB - The original definition of atypical antipsychotic drugs (APD) was drugs that are effective against positive symptoms in schizophrenia with no or little extrapyramidal symptoms (EPS). However, atypical APD have been reported to be more effective for cognitive dysfunction and negative symptoms in schizophrenia than typical APD, which expands the definition of 'atypicality'. This article provides a critical review of the pharmacology of atypical APD, especially from the viewpoint of receptor binding profiles and neurotransmitter regulations as well as neuroprotection and neurogenesis. A variety of serotonin (5-HT) receptors, such as 5-HT2A / 2C , 5-HT1A , 5-HT6 and 5-HT7 receptors, may contribute to the mechanisms of action of 'atypicality'. The dopaminergic modulations, including a low affinity for dopamine D2 receptors and a partial D2 receptor agonistic action, and glutamatergic regulations may also be involved in the pharmacological backgrounds of 'atypicality'. Atypical APD, but not typical APD, may facilitate cortical neuroprotection and hippocampal neurogenesis, which might be a part of the action mechanisms of atypical APD. The facilitation of cortical neuroprotection and hippocampal neurogenesis induced by atypical APD might be mediated by an increase in the Ser9 phosphorylation of glycogen synthase kinase-3beta (GSK-3beta). The stimulation of 5-HT1A receptors and/or the blockade of 5-HT2 receptors, which is characteristic of atypical APD, might increase Ser9 phosphorylation of GSK-3beta. Moreover, atypical APD increase brain-derived neurotrophic factor (BDNF) levels. BDNF increases Ser9 phosphorylation of GSK-3beta and has neuroprotective and neurogenic effects, as in the case of atypical APD. These findings suggest that GSK-3beta might play a role in the action mechanisms of atypical APD, in both the 5-HT-dependent and BDNF-dependent mechanisms. CI - (c) 2014 The Authors. Psychiatry and Clinical Neurosciences (c) 2014 Japanese Society of Psychiatry and Neurology. FAU - Kusumi, Ichiro AU - Kusumi I AD - Department of Psychiatry, Hokkaido University Graduate School of Medicine, Sapporo, Japan. FAU - Boku, Shuken AU - Boku S FAU - Takahashi, Yoshito AU - Takahashi Y LA - eng PT - Journal Article PT - Review DEP - 20141106 PL - Australia TA - Psychiatry Clin Neurosci JT - Psychiatry and clinical neurosciences JID - 9513551 RN - 0 (Antipsychotic Agents) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Receptors, Dopamine) RN - 0 (Receptors, Serotonin) RN - EC 2.7.11.1 (GSK3B protein, human) RN - EC 2.7.11.1 (Glycogen Synthase Kinase 3 beta) RN - EC 2.7.11.26 (Glycogen Synthase Kinase 3) SB - IM MH - Antipsychotic Agents/*pharmacology/*therapeutic use MH - Brain/drug effects/metabolism MH - Brain-Derived Neurotrophic Factor/metabolism MH - Glycogen Synthase Kinase 3/metabolism MH - Glycogen Synthase Kinase 3 beta MH - Humans MH - Neurogenesis/*drug effects MH - Neuroprotection/*drug effects MH - Receptors, Dopamine/*metabolism MH - Receptors, Serotonin/*metabolism OTO - NOTNLM OT - atypicality OT - brain-derived neurotrophic factor OT - dopamine OT - glycogen synthase kinase-3beta OT - serotonin EDAT- 2014/10/10 06:00 MHDA- 2016/01/19 06:00 CRDT- 2014/10/10 06:00 PHST- 2014/10/06 00:00 [accepted] PHST- 2014/10/10 06:00 [entrez] PHST- 2014/10/10 06:00 [pubmed] PHST- 2016/01/19 06:00 [medline] AID - 10.1111/pcn.12242 [doi] PST - ppublish SO - Psychiatry Clin Neurosci. 2015 May;69(5):243-58. doi: 10.1111/pcn.12242. Epub 2014 Nov 6.