Cited by 85Nicotinic Acetylcholine Receptors StudyNeuroscience and Neuropharmacology ResearchSmoking Behavior and Cessation

The DOI matches its Crossref record; 69 of the 71 references it cites were found in a registry or an index.

Presynaptic α4β2 Nicotinic Acetylcholine Receptors Increase Glutamate Release and Serotonin Neuron Excitability in the Dorsal Raphe Nucleus

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Garduño, Julieta, Galindo-Charles, Luis, Jiménez-Rodríguez, Javier, Galarraga, Elvira, Tapia, Dagoberto, Mihailescu, Stefan, Hernandez-Lopez, Salvador·2012·The Journal of Neuroscience

Abstract

Several behavioral effects of nicotine are mediated by changes in serotonin (5-HT) release in brain areas that receive serotonergic afferents from the dorsal raphe nucleus (DRN). In vitro experiments have demonstrated that nicotine increases the firing activity in the majority of DRN 5-HT neurons and that DRN contains nicotinic acetylcholine receptors (nAChRs) located at both somata and presynaptic elements. One of the most common presynaptic effects of nicotine is to increase glutamate release. Although DRN receives profuse glutamatergic afferents, the effect of nicotine on glutamate release in the DRN has not been studied in detail. Using whole-cell recording techniques, we investigated the effects of nicotine on the glutamatergic input to 5-HT DRN neurons in rat midbrain slices. Low nicotine concentrations, in the presence of bicuculline and tetrodotoxin (TTX), increased the frequency but did not change the amplitude of glutamate-induced EPSCs, recorded from identified 5-HT neurons. Nicotine-induced increase of glutamatergic EPSC frequency persisted 10-20 min after drug withdrawal. This nicotinic effect was mimicked by exogenous administration of acetylcholine (ACh) or inhibition of ACh metabolism. In addition, the nicotine-induced increase in EPSC frequency was abolished by blockade of α4β2 nAChRs, voltage-gated calcium channels, or intracellular calcium signaling but not by α7 nAChR antagonists. These data suggest that both nicotine and endogenous ACh can increase glutamate release through activation of presynaptic α4β2 but not α7 nAChRs in the DRN. The effect involves long-term changes in synaptic function, and it is dependent on voltage-gated calcium channels and presynaptic calcium stores.

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Crossref · 10.1523/jneurosci.0941-12.2012

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  • Nicotine influences the rate of dorsal raphe nucleus (DRN) neuron firing, and can increase serotonin release in rat midbrain slices, an effect largely mediated by presynaptic enhancement of both norepinephrine and glutamate release.

    “Nicotine influences the rate of dorsal raphe nucleus (DRN) neuron firing, and can increase serotonin release in rat midbrain slices (Mihailescu et al., 1998), an effect that appears to be largely mediated by presynaptic enhancement of both norepinephrine (Li et al., 1998) and glutamate release (Garduno et al., 2012).”

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  1. Engberg, 2000, Nicotine inhibits firing activity of dorsal raphé 5-HT neurones in vivo, Naunyn Schmiedebergs Arch Pharmacol, 362, 41

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Metadata

Authors
Garduño, J., Galindo-Charles, L., Jiménez-Rodríguez, J., Galarraga, E., Tapia, D., Mihailescu, S., & Hernandez-Lopez, S.
Affiliations
Universidad Nacional Autónoma de México (MX)
Venue
The Journal of Neuroscience
Published
2012-10-24
Volume
32
Issue
43
Pages
15148-15157
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2096390216
Cited by
83
References
71
Citations by year
2026: 3 · 2025: 2 · 2024: 6 · 2022: 7 · 2021: 8 · 2020: 5 · 2019: 2 · 2018: 8 · 2017: 5 · 2016: 5 · 2015: 5 · 2014: 15 · 2013: 12
FWCI
4.12
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
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
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Smoking Behavior and Cessation
Keywords
presynaptic nicotinic acetylcholine receptors, alpha4beta2 nAChR, alpha7 nAChR, nicotine, dorsal raphe nucleus, serotonergic neurons, glutamate release, voltage-gated calcium channels, acetylcholine, nicotine withdrawal, synaptic plasticity
MeSH terms
Acetylcholine, Aconitine, Animals, Animals, Newborn, Atropine, Bicuculline, Chelating Agents, Dihydro-beta-Erythroidine, Egtazic Acid, Electric Stimulation, Enzyme Inhibitors, Indoles, Male, Nicotine, Physostigmine, Raphe Nuclei, Receptors, Nicotinic, Ryanodine, Serotonin, Tetrodotoxin, Rats, Wistar, Presynaptic Terminals, Patch-Clamp Techniques, Cholinergic Agonists, Excitatory Amino Acid Antagonists, Glutamic Acid, Muscarinic Antagonists, Nicotinic Antagonists, 6-Cyano-7-nitroquinoxaline-2,3-dione, GABA Antagonists, Cadmium Chloride, Excitatory Postsynaptic Potentials, Sodium Channel Blockers, Rats, Serotonergic Neurons, In Vitro Techniques

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