Cited by 119Nicotinic Acetylcholine Receptors StudyNeuroscience and Neuropharmacology ResearchIon channel regulation and function

Neuroprotection by nicotine in mouse primary cortical cultures involves activation of calcineurin and L-type calcium channel inactivation

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Stevens, Tanya R., Krueger, Stefan R., Fitzsimonds, Reiko M., Picciotto, Marina R.·2003·The Journal of Neuroscience

Abstract

Regulation of intracellular calcium influences neuronal excitability, synaptic plasticity, gene expression, and neurotoxicity. In this study, we investigated the role of calcium in mechanisms underlying nicotine-mediated neuroprotection from glutamate excitotoxicity. Neuroprotection by nicotine in primary cortical cultures was not seen in knock-out mice lacking the beta2 subunit of the nicotinic acetylcholine receptor (nAChR). Neuroprotection was partially blocked in wild-type cultures by alpha-bungarotoxin, an antagonist of the alpha7 nAChR subtype, suggesting a potential cooperative role for these subtypes. Pretreatment with nicotine decreased glutamate-mediated calcium influx in primary cortical cultures by 41%, an effect that was absent in cultures from knock-out mice lacking the beta2 subunit of the nAChR. This effect was dependent on calcium entry through L-type channels during nicotine pretreatment in wild-type cultures. The ability of nicotine to decrease glutamate-mediated calcium influx was occluded by cotreatment with nifedipine during glutamate application, suggesting that nicotine pretreatment decreased subsequent activity of L-type calcium channels. Treatment with the calcineurin antagonists FK506 and cyclosporine during pretreatment eliminated both nicotine-mediated neuroprotection and the effects of nicotine on L-type channels. We conclude that neuroprotective effects of nicotine in cortical neurons involve both beta2- and alpha7-containing nAChRs, activation of calcineurin, and decreased intracellular calcium via L-type channels.

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Crossref · 10.1523/jneurosci.23-31-10093.2003

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Authors
Stevens, T. R., Krueger, S. R., Fitzsimonds, R. M., & Picciotto, M. R.
Affiliations
Yale University (US)
Venue
The Journal of Neuroscience
Published
2003-11-05
Volume
23
Issue
31
Pages
10093-10099
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2141567624
Cited by
119
References
50
Citations by year
2026: 3 · 2024: 1 · 2023: 3 · 2022: 3 · 2021: 3 · 2020: 2 · 2019: 2 · 2018: 8 · 2017: 4 · 2016: 4 · 2015: 3 · 2014: 6 · 2013: 6 · 2012: 7
FWCI
2.65
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Burroughs Wellcome Fund
  • Alzheimer's Association
  • National Institutes of Health (DA14241, DA10455, DA00436)
  • National Institute of Mental Health (R01MH059800, MH-59800)
  • National Institute on Drug Abuse (DA14241, K02DA000436, DA 10455, R01DA014241, R29DA010455, R01DA010455, DA 00436)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nicotinic Acetylcholine Receptors Study
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ion channel regulation and function
Keywords
nicotine, neuroprotection, glutamate excitotoxicity, calcineurin, L-type calcium channels, nicotinic acetylcholine receptors, beta2 subunit, alpha7 subunit, intracellular calcium, calcium influx, cortical neurons, nifedipine, FK506, cyclosporine, alpha-bungarotoxin
MeSH terms
Animals, Bungarotoxins, Calcium Channel Blockers, Cells, Cultured, Cerebral Cortex, Neurons, Neurotoxins, Nicotine, Nifedipine, Receptors, Nicotinic, Tacrolimus, Mice, Knockout, Neuroprotective Agents, Glutamic Acid, Calcineurin, Calcium Channels, L-Type, Mice, alpha7 Nicotinic Acetylcholine Receptor, Calcineurin Inhibitors

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