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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Role of glycine in the N-methyl-D-aspartate-mediated neuronal cytotoxicity.

Current evidence indicates that glutamate acting via the N-methyl-D-aspartate (NMDA) receptor/ion channel complex plays a major role in the neuronal degeneration associated with a variety of neurological disorders. In this report the role of glycine in NMDA neurotoxicity was examined. We demonstrate that NMDA-mediated neurotoxicity is markedly potentiated by glycine and other amino acids, e.g., D-serine. Putative glycine antagonists HA-966 and 7-chlorokynurenic acid were highly effective in preventing NMDA neurotoxicity, even in the absence of added glycine. The neuroprotective action of HA-966 and 7-chlorokynurenic acid, but not that of NMDA antagonists 3-(2-carboxypiperazine-4-yl)propylphosphonate and MK-801, could be reversed by glycine. These results indicate that glycine, operating through a strychinine-insensitive glycine site, plays a central permissive role in NMDA-mediated neurotoxicity.[1]


  1. Role of glycine in the N-methyl-D-aspartate-mediated neuronal cytotoxicity. Patel, J., Zinkand, W.C., Thompson, C., Keith, R., Salama, A. J. Neurochem. (1990) [Pubmed]
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