Failure of a protein synthesis inhibitor to modify glutamate receptor-mediated neurotoxicity in vivo

C. Leppin, F. Finiels-Marlier, Jacqueline Crawley, P. Montpied, S. M. Paul

Research output: Contribution to journalArticle

29 Scopus citations

Abstract

The delayed neuronal death (DND) resulting from brief forebrain ischemia has recently been reported to be markedly attenuated by parenteral administration of the reversible protein synthesis inhibitor, anisomycin. Previous work suggests that ischemia-induced DND is mediated by glutamate acting at one or more glutamate receptors, since glutamate receptor antagonists have been reported to reduce ischemia-induced DND. Consequently, we tested whether anisomycin could modify DND induced by direct intracerebral administration of the excitotoxins, N-methyl-d-aspartate (NMDA), α-amino-3-hydroxy-5-methylisoxasole (AMPA) or kainic acid. Anisomycin, administered parenterally, in multiple doses did not alter DND induced by any of these excitotoxins, not did combined parenteral and direct intracerebral injection of anisomycin protect against DND induced by AMPA. Thus, neurotoxicity induced by direct intracerebral administration of NMDA, AMPA or kainic acid does not appear to require de novo protein synthesis, and, therefore is not likely to be mediated by the expression of a programmed cell death cascade.

Original languageEnglish (US)
Pages (from-to)168-170
Number of pages3
JournalBrain Research
Volume581
Issue number1
DOIs
StatePublished - May 22 1992
Externally publishedYes

Keywords

  • Excitotoxicity
  • Glutamate receptor
  • Protein synthesis inhibitor

ASJC Scopus subject areas

  • Developmental Biology
  • Molecular Biology
  • Clinical Neurology
  • Neuroscience(all)

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