Cited by 39Nicotinic Acetylcholine Receptors StudyNeurotransmitter Receptor Influence on BehaviorSmoking Behavior and Cessation

Intermittent nicotine exposure upregulates nAChR s in VTA dopamine neurons and sensitises locomotor responding to the drug

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Baker, Lorinda K., Mao, Danyan, Chi, Henry, Govind, Anitha P., Vallejo, Yolanda F., Iacoviello, Michael, Herrera, Stacy, Cortright, James J. +3 more·2013·European Journal of Neuroscience

Abstract

Dopaminergic projections from the ventral tegmental area (VTA) to the nucleus accumbens (NA cc) mediate the behavioral and motivational effects of many drugs of abuse, including nicotine. Repeated intermittent administration of these drugs, a pattern often associated with initial drug exposure, sensitises the reactivity of dopamine (DA) neurons in this pathway, enhances the locomotor behaviors the drugs emit, and promotes their pursuit and self‐administration. Here we show that activation of nicotinic acetylcholine receptors (n AC h R s) in the VTA, but not the NA cc, is essential for the induction of locomotor sensitisation by nicotine. Repeated intermittent nicotine exposure (4 × 0.4 mg/kg, base, i.p., administered over 7 days), a regimen leading to long‐lasting locomotor sensitisation, also produced upregulation of nAChR s in the VTA, but not the NA cc, in the hours following the last exposure injection. Functional nAChR upregulation was observed selectively in DA but not GABA neurons in the VTA. These effects were followed by long‐term potentiation of excitatory inputs to these cells and increased nicotine‐evoked DA overflow in the NA cc. Withdrawal symptoms were not observed following this exposure regimen. Thus, intermittent activation and upregulation by nicotine of nAChR s in DA neurons in the VTA may contribute to the development of behavioral sensitisation and increased liability for nicotine addiction.

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Authors
Baker, L. K., Mao, D., Chi, H., Govind, A. P., Vallejo, Y. F., Iacoviello, M., Herrera, S., Cortright, J. J., Green, W. N., McGehee, D. S., & Vezina, P.
Affiliations
University of Chicago (US)
Corresponding author
Vezina, Paul
Venue
European Journal of Neuroscience
Publisher
Wiley
Published
2013-01-21
Volume
37
Issue
6
Pages
1004-1011
ISSN
  • 0953-816X (ISSN-L)
  • 1460-9568
OpenAlex
W1996574732
Cited by
39
References
50
Citations by year
2025: 1 · 2024: 3 · 2023: 1 · 2021: 3 · 2020: 4 · 2019: 2 · 2018: 5 · 2017: 2 · 2016: 3 · 2015: 10 · 2014: 2 · 2013: 3
FWCI
2.69
Type
journal article
Language
en
Open access
Locations
  • European Journal of Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health
  • National Institute on Drug Abuse (T32-DA07255, R01DA015918, P01DA019695, T32DA007255)
  • National Institute of Neurological Disorders and Stroke (R01NS043782)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nicotinic Acetylcholine Receptors Study
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Health Sciences › Medicine › Physiology › Smoking Behavior and Cessation
Keywords
nicotine, nicotinic acetylcholine receptors, ventral tegmental area, dopaminergic neurons, nicotine dependence, nucleus accumbens, receptor up-regulation, long-term potentiation, nicotine withdrawal, drugs of abuse
MeSH terms
Animals, Dopamine, Locomotion, Male, Nicotine, Nucleus Accumbens, Receptors, Nicotinic, Up-Regulation, Rats, Sprague-Dawley, Ventral Tegmental Area, Long-Term Potentiation, Nicotinic Agonists, Rats, Dopaminergic Neurons, GABAergic Neurons, Central Nervous System Sensitization

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