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Mol Psychiatry ; 21(3): 386-93, 2016 Mar.
Article in English | MEDLINE | ID: mdl-26008737

ABSTRACT

NMDA glutamate receptors have key roles in brain development, function and dysfunction. Regulatory roles of D-serine in NMDA receptor-mediated synaptic plasticity have been reported. Nonetheless, it is unclear whether and how neonatal deficits in NMDA-receptor-mediated neurotransmission affect adult brain functions and behavior. Likewise, the role of D-serine during development remains elusive. Here we report behavioral and electrophysiological deficits associated with the frontal cortex in Pick1 knockout mice, which show D-serine deficits in a neonatal- and forebrain-specific manner. The pathological manifestations observed in adult Pick1 mice are rescued by transient neonatal supplementation of D-serine, but not by a similar treatment in adulthood. These results indicate a role for D-serine in neurodevelopment and provide novel insights on how we interpret data of psychiatric genetics, indicating the involvement of genes associated with D-serine synthesis and degradation, as well as how we consider animal models with neonatal application of NMDA receptor antagonists.


Subject(s)
Mental Disorders , Nuclear Proteins/deficiency , Serine/therapeutic use , Signal Transduction/genetics , 2,3,4,5-Tetrahydro-7,8-dihydroxy-1-phenyl-1H-3-benzazepine/pharmacology , Action Potentials/drug effects , Action Potentials/genetics , Age Factors , Animals , Carrier Proteins/genetics , Cell Cycle Proteins , Disease Models, Animal , Dopamine Agonists/pharmacology , Excitatory Amino Acid Antagonists/therapeutic use , Exploratory Behavior/drug effects , Frontal Lobe/pathology , Maze Learning/drug effects , Mental Disorders/drug therapy , Mental Disorders/genetics , Mental Disorders/prevention & control , Mice , Mice, Inbred C57BL , Mice, Knockout , Motor Activity/drug effects , Motor Activity/genetics , Neurons/drug effects , Nuclear Proteins/genetics , Prepulse Inhibition/drug effects , Prepulse Inhibition/genetics , Serine/metabolism , Signal Transduction/drug effects , Swimming/psychology , Time Factors
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