Repeated intracerebroventricular infusion of nicotine prevents kainate-induced neurotoxicity by activating the α7 nicotinic acetylcholine receptor

  • Eun Joo Shin
  • , Jong Seok Chae
  • , Myung Eun Jung
  • , Guoying Bing
  • , Kwang Ho Ko
  • , Won Ki Kim
  • , Myung Bok Wie
  • , Mi Ae Cheon
  • , Seung Yeol Nah
  • , Hyoung Chun Kim*
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

We examined whether (-)-nicotine infusion can affect kainic acid (KA)-induced neurotoxicity in rats. Although treatment with a single nicotine infusion (0.5 or 1.0 μg/side, i.c.v.) failed to attenuate KA-induced neurotoxicity, repeated nicotine infusions (1.0 μg/side/day for 10 days) attenuated the seizures, the severe loss of cells in hippocampal regions CA1 and CA3, the increase in activator protein (AP)-1 DNA binding activity, and mortality after KA administration. α-Bungarotoxin and mecamylamine blocked the neuroprotective effects of nicotine. These results suggest that repeated nicotine treatment provides α7 nicotinic acetylcholine receptor-mediated neuroprotection against KA toxicity.

Original languageEnglish
Pages (from-to)292-298
Number of pages7
JournalEpilepsy Research
Volume73
Issue number3
DOIs
Publication statusPublished - 2007 Mar
Externally publishedYes

Bibliographical note

Funding Information:
This research was supported by a Grant (M103KV010013-06K22010310) from the Brain Research Center from 21st Century Frontier Research Program funded by the Ministry of Science and Technology, Republic of Korea, by a Grant of the Korea Health 21 R & D Project (A020007), Ministry of Health & welfare, Republic of Korea, and by BK 21 Project, Korea Research Foundation. Equipment at the Institute of Pharmaceutical Science (Kangwon National University) was used for this study.

Keywords

  • AP-1 DNA binding activity
  • Hippocampus
  • Kainic acid
  • Neuroprotection
  • Nicotine
  • α7 nicotinic acetylcholine receptor

ASJC Scopus subject areas

  • Neurology
  • Clinical Neurology

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