TY - JOUR PY - 1989// TI - The role of excitatory amino acids and NMDA receptors in traumatic brain injury JO - Science A1 - Faden, Alan I. A1 - Demediuk, P. A1 - Panter, S. S. A1 - Vink, R. SP - 798 EP - 800 VL - 244 IS - 4906 N2 - Brain injury induced by fluid percussion in rats caused a marked elevation in extracellular glutamate and aspartate adjacent to the trauma site. This increase in excitatory amino acids was related to the severity of the injury and was associated with a reduction in cellular bioenergetic state and intracellular free magnesium. Treatment with the noncompetitive N-methyl-D-aspartate (NMDA) antagonist dextrophan or the competitive antagonist 3-(2-carboxypiperazin-4-yl)propyl-1-phosphonic acid limited the resultant neurological dysfunction; dextrorphan treatment also improved the bioenergetic state after trauma and increased the intracellular free magnesium. Thus, excitatory amino acids contribute to delayed tissue damage after brain trauma; NMDA antagonists may be of benefit in treating acute head injury.

Language: en

LA - en SN - 0036-8075 UR - http://dx.doi.org/ ID - ref1 ER -