Neuronal serine racemase regulates extracellular d-serine levels in the adult mouse hippocampus
نویسندگان
چکیده
منابع مشابه
Purification of serine racemase: biosynthesis of the neuromodulator D-serine.
High levels of D-serine occur in mammalian brain, where it appears to be an endogenous ligand of the glycine site of N-methyl-D-aspartate receptors. In glial cultures of rat cerebral cortex, D-serine is enriched in type II astrocytes and is released upon stimulation with agonists of non-N-methyl-D-aspartate glutamate receptors. The high levels of D-serine in discrete areas of rat brain imply th...
متن کاملSpatiotemporal relationships among D-serine, serine racemase, and D-amino acid oxidase during mouse postnatal development.
AIM To elucidate the spatiotemporal relationships among D-serine, serine racemase, and D-amino acid oxidase (EC 1.4.3.3; DAO) in mouse cortex, striatum, cerebellum, heart, lung, liver, spleen, kidney, and skeletal muscle during mouse postnatal development. METHODS The transcription levels of serine racemase and DAO were assayed by reverse transcription-polymerase chain reaction (RT-PCR). The ...
متن کاملAspartate racemase, generating neuronal D-aspartate, regulates adult neurogenesis.
D-aspartic acid is abundant in the developing brain. We have identified and cloned mammalian aspartate racemase (DR), which converts L-aspartate to D-aspartate and colocalizes with D-aspartate in the brain and neuroendocrine tissues. Depletion of DR by retrovirus-mediated expression of short-hairpin RNA in newborn neurons of the adult hippocampus elicits profound defects in the dendritic develo...
متن کاملSerine racemase: a glial enzyme synthesizing D-serine to regulate glutamate-N-methyl-D-aspartate neurotransmission.
Although D amino acids are prominent in bacteria, they generally are thought not to occur in mammals. Recently, high levels of D-serine have been found in mammalian brain where it activates glutamate/N-methyl-D-aspartate receptors by interacting with the "glycine site" of the receptor. Because amino acid racemases are thought to be restricted to bacteria and insects, the origin of D-serine in m...
متن کاملCofactors of serine racemase that physiologically stimulate the synthesis of the N-methyl-D-aspartate (NMDA) receptor coagonist D-serine.
High levels of d-serine occur in the brain, challenging the notion that d-amino acids would not be present or play a role in mammals. d-serine levels in the brain are even higher than many l-amino acids, such as asparagine, valine, isoleucine, and tryptophan, among others. d-serine is synthesized by a serine racemase (SR) enzyme, which directly converts l- to d-serine. We now report that SR is ...
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ژورنال
عنوان ژورنال: Journal of Neural Transmission
سال: 2015
ISSN: 0300-9564,1435-1463
DOI: 10.1007/s00702-015-1388-2