PMID- 21956446 OWN - NLM STAT- MEDLINE DCOM- 20120821 LR - 20231106 IS - 1740-634X (Electronic) IS - 0893-133X (Print) IS - 0893-133X (Linking) VI - 37 IP - 1 DP - 2012 Jan TI - From revolution to evolution: the glutamate hypothesis of schizophrenia and its implication for treatment. PG - 4-15 LID - 10.1038/npp.2011.181 [doi] AB - Glutamate is the primary excitatory neurotransmitter in mammalian brain. Disturbances in glutamate-mediated neurotransmission have been increasingly documented in a range of neuropsychiatric disorders including schizophrenia, substance abuse, mood disorders, Alzheimer's disease, and autism-spectrum disorders. Glutamatergic theories of schizophrenia are based on the ability of N-methyl-D-aspartate receptor (NMDAR) antagonists to induce schizophrenia-like symptoms, as well as emergent literature documenting disturbances of NMDAR-related gene expression and metabolic pathways in schizophrenia. Research over the past two decades has highlighted promising new targets for drug development based on potential pre- and postsynaptic, and glial mechanisms leading to NMDAR dysfunction. Reduced NMDAR activity on inhibitory neurons leads to disinhibition of glutamate neurons increasing synaptic activity of glutamate, especially in the prefrontal cortex. Based on this mechanism, normalizing excess glutamate levels by metabotropic glutamate group 2/3 receptor agonists has led to potential identification of the first non-monoaminergic target with comparable efficacy as conventional antipsychotic drugs for treating positive and negative symptoms of schizophrenia. In addition, NMDAR has intrinsic modulatory sites that are active targets for drug development, several of which show promise in preclinical/early clinical trials targeting both symptoms and cognition. To date, most studies have been done with orthosteric agonists and/or antagonists at specific sites. However, allosteric modulators, both positive and negative, may offer superior efficacy with less danger of downregulation. FAU - Moghaddam, Bita AU - Moghaddam B AD - Department of Neuroscience and Psychiatry, University of Pittsburgh, Pittsburgh, PA 15260, USA. bita@pitt.edu FAU - Javitt, Daniel AU - Javitt D LA - eng GR - R01 DA003383/DA/NIDA NIH HHS/United States GR - R01DA03383/DA/NIDA NIH HHS/United States GR - R01 MH084906/MH/NIMH NIH HHS/United States GR - R56 MH084906/MH/NIMH NIH HHS/United States GR - R01 MH048404/MH/NIMH NIH HHS/United States GR - R37 MH48404/MH/NIMH NIH HHS/United States GR - R37 MH048404/MH/NIMH NIH HHS/United States GR - P50 MH086385/MH/NIMH NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20110928 PL - England TA - Neuropsychopharmacology JT - Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology JID - 8904907 RN - 0 (Neurotransmitter Agents) RN - 0 (Psychotropic Drugs) RN - 0 (Receptors, N-Methyl-D-Aspartate) RN - 3KX376GY7L (Glutamic Acid) SB - IM MH - Glutamic Acid/*physiology MH - Humans MH - Neurotransmitter Agents/*physiology MH - Psychotropic Drugs/*therapeutic use MH - Receptors, N-Methyl-D-Aspartate/*antagonists & inhibitors/physiology MH - Schizophrenia/*drug therapy/*metabolism/physiopathology PMC - PMC3238069 EDAT- 2011/10/01 06:00 MHDA- 2012/08/22 06:00 PMCR- 2013/01/01 CRDT- 2011/09/30 06:00 PHST- 2011/09/30 06:00 [entrez] PHST- 2011/10/01 06:00 [pubmed] PHST- 2012/08/22 06:00 [medline] PHST- 2013/01/01 00:00 [pmc-release] AID - npp2011181 [pii] AID - 10.1038/npp.2011.181 [doi] PST - ppublish SO - Neuropsychopharmacology. 2012 Jan;37(1):4-15. doi: 10.1038/npp.2011.181. Epub 2011 Sep 28.