PMID- 25979765 OWN - NLM STAT- MEDLINE DCOM- 20160302 LR - 20171116 IS - 1878-4216 (Electronic) IS - 0278-5846 (Linking) VI - 62 DP - 2015 Oct 1 TI - D-aspartate dysregulation in Ddo(-/-) mice modulates phencyclidine-induced gene expression changes of postsynaptic density molecules in cortex and striatum. PG - 35-43 LID - S0278-5846(15)00093-7 [pii] LID - 10.1016/j.pnpbp.2015.05.003 [doi] AB - N-methyl-D-aspartate receptor (NMDAR) hypofunction has been considered a key alteration in schizophrenia pathophysiology. Thus, several strategies aimed at enhancing glutamatergic transmission, included the introduction in therapy of D-amino acids, such as D-serine and D-cycloserine augmentation, have been proposed to counteract difficult-to-treat symptoms or treatment-resistant forms of schizophrenia. Another D-amino acid, D-aspartate, has recently gained increasing interest for its role in NMDAR activation and has been found reduced in post-mortem cortex of schizophrenia patients. NMDAR is the core of the postsynaptic density (PSD), a postsynaptic site involved in glutamate signaling and responsive to antipsychotic treatment. In this study, we investigated striatal and cortical gene expression of key PSD transcripts (i.e. Homer1a, Homer1b/c, and PSD-95) in mice with persistently elevated brain D-aspartate-levels, i.e. the D-aspartate-oxidase knockout mice (Ddo(-/-)). These animal models were analyzed both in naive condition and after phencyclidine (PCP) treatment. Naive Ddo(-/-) mice showed decreased Homer1a expression in the prefrontal cortex, increased Homer1b/c expression in the striatum, and decreased PSD-95 expression in the striatum and in the cortex. Acute PCP treatment restored, and even potentiated, Homer1a expression in the prefrontal cortex of mutant mice, while it had limited effects on the other genes. These results suggest that persistently elevated D-aspartate, by enhancing NMDA transmission, may cause complex adaptive mechanisms affecting Homer1a, which in turn may explain the recently demonstrated protective effects of this D-amino acid against PCP-induced behavioral alterations, such as ataxic behavior. CI - Copyright (c) 2015 Elsevier Inc. All rights reserved. FAU - de Bartolomeis, Andrea AU - de Bartolomeis A AD - Laboratory of Molecular and Translational Psychiatry, Department of Neuroscience, Reproductive and Odontostomatological Sciences, University School of Medicine Federico II, Naples, Italy. Electronic address: adebarto@unina.it. FAU - Errico, Francesco AU - Errico F AD - CEINGE Biotecnologie Avanzate, Naples, Italy; Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, Naples, Italy. FAU - Aceto, Giuseppe AU - Aceto G AD - CEINGE Biotecnologie Avanzate, Naples, Italy. FAU - Tomasetti, Carmine AU - Tomasetti C AD - Laboratory of Molecular and Translational Psychiatry, Department of Neuroscience, Reproductive and Odontostomatological Sciences, University School of Medicine Federico II, Naples, Italy. FAU - Usiello, Alessandro AU - Usiello A AD - CEINGE Biotecnologie Avanzate, Naples, Italy; Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, Second University of Naples (SUN), Caserta, Italy. FAU - Iasevoli, Felice AU - Iasevoli F AD - Laboratory of Molecular and Translational Psychiatry, Department of Neuroscience, Reproductive and Odontostomatological Sciences, University School of Medicine Federico II, Naples, Italy. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150512 PL - England TA - Prog Neuropsychopharmacol Biol Psychiatry JT - Progress in neuro-psychopharmacology & biological psychiatry JID - 8211617 RN - 0 (Carrier Proteins) RN - 0 (Disks Large Homolog 4 Protein) RN - 0 (Dlg4 protein, mouse) RN - 0 (Homer Scaffolding Proteins) RN - 0 (Membrane Proteins) RN - 0 (Psychotropic Drugs) RN - 0 (RNA, Messenger) RN - 4SR0Q8YD1X (D-Aspartic Acid) RN - EC 1.4.3.1 (D-Aspartate Oxidase) RN - EC 2.7.4.8 (Guanylate Kinases) RN - J1DOI7UV76 (Phencyclidine) SB - IM MH - Animals MH - Ataxia/chemically induced/metabolism MH - Carrier Proteins/metabolism MH - Cerebral Cortex/drug effects/*metabolism MH - Corpus Striatum/drug effects/*metabolism MH - D-Aspartate Oxidase/genetics/*metabolism MH - D-Aspartic Acid/*metabolism MH - Disks Large Homolog 4 Protein MH - Gene Expression/drug effects MH - Guanylate Kinases/metabolism MH - Homer Scaffolding Proteins MH - Membrane Proteins/metabolism MH - Mice, Knockout MH - Phencyclidine/*pharmacology MH - Psychotropic Drugs/*pharmacology MH - RNA, Messenger/metabolism MH - Random Allocation OTO - NOTNLM OT - Homer OT - NMDAR OT - PSD-95 OT - Psychosis OT - Treatment-resistant schizophrenia EDAT- 2015/05/17 06:00 MHDA- 2016/03/05 06:00 CRDT- 2015/05/17 06:00 PHST- 2015/03/19 00:00 [received] PHST- 2015/05/06 00:00 [revised] PHST- 2015/05/06 00:00 [accepted] PHST- 2015/05/17 06:00 [entrez] PHST- 2015/05/17 06:00 [pubmed] PHST- 2016/03/05 06:00 [medline] AID - S0278-5846(15)00093-7 [pii] AID - 10.1016/j.pnpbp.2015.05.003 [doi] PST - ppublish SO - Prog Neuropsychopharmacol Biol Psychiatry. 2015 Oct 1;62:35-43. doi: 10.1016/j.pnpbp.2015.05.003. Epub 2015 May 12.