Cited by 77Nicotinic Acetylcholine Receptors StudyNeuroscience and Neuropharmacology ResearchMemory and Neural Mechanisms

Nicotinic mechanisms influencing synaptic plasticity in the hippocampus

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Placzek, Andon Nicholas, Zhang, Tao A, Dani, John Anthony·2009·Acta Pharmacologica Sinica

Abstract

Nicotinic acetylcholine receptors (nAChRs) are expressed throughout the hippocampus, and nicotinic signaling plays an important role in neuronal function. In the context of learning and memory related behaviors associated with hippocampal function, a potentially significant feature of nAChR activity is the impact it has on synaptic plasticity. Synaptic plasticity in hippocampal neurons has long been considered a contributing cellular mechanism of learning and memory. These same kinds of cellular mechanisms are a factor in the development of nicotine addiction. Nicotinic signaling has been demonstrated by in vitro studies to affect synaptic plasticity in hippocampal neurons via multiple steps, and the signaling has also been shown to evoke synaptic plasticity in vivo. This review focuses on the nAChRs subtypes that contribute to hippocampal synaptic plasticity at the cellular and circuit level. It also considers nicotinic influences over long-term changes in the hippocampus that may contribute to addiction.

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  • Repeated nicotine exposure produces heterologous adaptations, including increased AMPA/NMDA current ratios at DA neurons and increased high-affinity D2 receptors in the NAcc.

    “Besides altering cholinergic function, repeated nicotine exposure produces heterologous adaptations. For example, nicotine increases AMPA/NMDA current ratios (a hallmark of long-term potentiation) at DA neurons [94–96] and other locations involved in drug-associated memory [97–99]. In the NAcc, nicotine leads to an increase in high affinity DA D2 receptors [100].”

    From Mechanistic insights into nicotine withdrawal (2011) · cites this paper as [95]

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Authors
Placzek, A. N., Zhang, T. A., & Dani, J. A.
Affiliations
Baylor College of Medicine (US)
Corresponding author
Dani, John Anthony
Venue
Acta Pharmacologica Sinica
Published
2009-05-11
Volume
30
Issue
6
Pages
752-760
ISSN
  • 0253-9756 (ISSN-L)
  • 1671-4083
  • 1745-7254
OpenAlex
W2055471148
Cited by
77
References
91
Citations by year
2026: 2 · 2025: 3 · 2024: 2 · 2023: 3 · 2022: 1 · 2021: 5 · 2020: 3 · 2019: 1 · 2018: 8 · 2017: 3 · 2016: 5 · 2015: 3 · 2014: 9 · 2013: 10 · 2012: 6
FWCI
0.46
Type
journal article
Language
en
Open access
Locations
  • Acta Pharmacologica Sinica (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (NS21229)
  • National Institute on Drug Abuse (DA09411, R01DA009411)
  • National Institute of Neurological Disorders and Stroke (NS 21229, R37NS021229, R01NS021229)
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 › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
nicotinic acetylcholine receptors, synaptic plasticity, hippocampus, learning and memory, nicotine dependence, nAChR subtypes, hippocampal circuitry
MeSH terms
Animals, Hippocampus, Humans, Synaptic Transmission, Neuronal Plasticity, Nicotine, Receptors, Nicotinic, Tobacco Use Disorder, Signal Transduction, Nicotinic Agonists, Protein Subunits

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