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Introduction and Historical Notes

Excitotoxicity in Neurologic Diseases
  • M. Flint Beal

Abstract

Excitotoxicity refers to neuronal death caused by activation of excitatory amino acid receptors. Several lines of evidence have linked excitotoxic cell death to the pathogenesis of both acute and chronic neurologic diseases. The initial observation that glutamate was neurotoxic was that of Lucas and Newhouse, who found that administration of glutamate to mice resulted in retinal degeneration (Lucas and Newhouse, 1957). Subsequent studies of Olney and colleagues linked neurotoxicity to the activation of excitatory amino acid receptors, and the term “excitotoxin” was coined (Olney, 1969). Further advances were those of Rothman linking release of excitatory amino acids to anoxic cell death in hippocampal cultures (Rothman, 1984), and of Choi linking calcium influx to delayed cell death caused by excitatory amino acids (Choi, 1987). More work has linked activation of excitatory amino acid receptors to free radical generation and nitric oxide, both of which may lead to oxidative stress (Dawson et al., 1991: Lafon-Cazal et al., 1993).

Keywords

Electron Paramagnetic Resonance Excitatory Amino Acid Kainic Acid Quinolinic Acid Cereb Blood Flow 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 2004

Authors and Affiliations

  • M. Flint Beal
    • 1
  1. 1.Department of Neurology and NeuroscienceWeill Medical College of Cornell University, New York Presbyterian HospitalNew YorkUSA

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