期刊
JOURNAL OF NEUROCHEMISTRY
卷 114, 期 3, 页码 647-653出版社
WILEY-BLACKWELL
DOI: 10.1111/j.1471-4159.2010.06802.x
关键词
conditional knockout mice; glycine transporters; glycine-glutamate interactions; neuronal glycine transporter 1; NMDA receptors; schizophrenia
资金
- Italian MIUR
P>Glycine transporter 1 (GLYT1) and GLYT2 are the glycine transporters in CNS. While GLYT2 is largely expressed in glycinergic neurons, GLYT1 has long been considered to be exclusively present in glial cells. There is increasing evidence that significant amounts of the 'glial' transporter also exist on neurons, particularly on pre-synaptic nerve endings of glutamatergic neurons. The functions of 'neuronal GLYT1' may be manifold and are discussed in this review. Of major interest are the interactions between neuronal GLYT1 and glutamatergic receptors of the NMDA type the activity of which is modulated not only by astrocytic GLYT1 but also by neuronal GLYT1. Pathophysiological roles and therapeutic implications of neuronal GLYT1 are emerging from recent studies with genetically modified mice, particularly with animals lacking forebrain neuron-specific GLYT1 transporters. These mutant mice exhibit promnesic phenotypes reflecting enhancement of NMDA receptor function, as it occurs following administration of GLYT1 inhibitors. Inactivation of neuronal GLYT1 in the forebrain may represent an effective therapeutic intervention for the treatment of schizophrenia.
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