Excitotoxic insult due to ibogaine leads to delayed induction of neuronal nos in purkinje cells

E. O’Hearn, P. Zhang, M. E. Molliver

Research output: Contribution to journalArticle

Abstract

Ibogaine causes degeneration of Purkinje cells (PKCs), presumably via activation of neurons in the inferior olive leading to release of glutamate at climbing fiber terminals. Following ibogaine administration, some Purkinje cells express NADPH-diaphorase and neuronal NOS (nNOS), neither of which is present normally in these cells. The induction of NOS is delayed in onset, dose-related, and detected in neurons adjacent to degenerated PKCs. The results demonstrate that nNOS induction can follow excitotoxic neuronal injury or perturbation. However, NO is unlikely to participate in the initial phase of PKC damage. Both the late induction of nNOS and the spatial relationship between damaged and nNOS-expressing PKCs are consistent with a role for NO in either neuronal recovery or delayed cell death following excitotoxic injury.

Original languageEnglish (US)
Pages (from-to)1611-1616
Number of pages6
JournalNeuroreport
Volume6
Issue number12
StatePublished - Aug 1995

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Keywords

  • Addiction
  • Cerebellum
  • Excitotoxicity
  • Hallucinogen
  • Ibogaine
  • Microglia
  • NADPH-diaphorase
  • Neurotoxicity
  • Nitric oxide synthase (NOS)
  • Purkinje cell

ASJC Scopus subject areas

  • Neuroscience(all)

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