Cited by 36Memory and Neural MechanismsNicotinic Acetylcholine Receptors StudySmoking Behavior and Cessation

Nicotine and extinction of fear conditioning

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Elias, G.A., Gulick, D., Wilkinson, D.S., Gould, T.J.·2010·Neuroscience

Abstract

Despite known health risks, nicotine use remains high, especially in populations diagnosed with mental illnesses, including anxiety disorders and Post-Traumatic Stress Disorder (PTSD). Smoking in these populations may relate to the effects of nicotine on emotional memories. The current study examined the effects of nicotine administration on the extinction of conditioned fear memories. C57BL/6J mice were trained with two white noise conditioned stimulus (CS; 30 s, 85 dB)-foot shock (2 s, 0.57 mA) pairings. Extinction sessions consisted of six presentations of the CS (60 s) across multiple days. Mice were either tested in an AAA design, in which all stages occurred in the same context, or in an ABA design to identify if context changes alter extinction. Saline or nicotine was administered 5 min before training and/or extinction. In the AAA design, nicotine administration before training did not alter extinction. Nicotine administered prior to extinction sessions enhanced extinction and nicotine administered before training and extinction decreased extinction. In the ABA design, nicotine administered before extinction enhanced extinction and blocked context renewal of conditioned fear, while nicotine administered during training and extinction did not alter extinction but enhanced the context renewal of conditioned fear. Nicotine has a differential effect on extinction of fear conditioning depending on when it is administered. Administration during extinction enhances extinction whereas administration during training and extinction may strengthen contextual fear memories and interfere with extinction.

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Authors
Elias, G. A., Gulick, D., Wilkinson, D. S., & Gould, T. J.
Affiliations
Temple University (US)
Corresponding author
Gould, T.J.
Venue
Neuroscience
Publisher
Elsevier BV
Published
2010-02
Volume
165
Issue
4
Pages
1063-1073
ISSN
0306-4522 (ISSN-L)
OpenAlex
W2019113229
Cited by
36
References
46
Citations by year
2025: 1 · 2024: 1 · 2023: 1 · 2022: 3 · 2021: 1 · 2020: 3 · 2019: 2 · 2017: 4 · 2016: 7 · 2015: 4 · 2014: 3 · 2013: 3 · 2012: 2
FWCI
0.48
Type
journal article
Language
en
Open access
Locations
  • Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute for Drug Abuse (NIDA) (DA017949)
  • NIDA diversity supplement (DA024787-01A1S1)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nicotinic Acetylcholine Receptors Study
  • Health Sciences › Medicine › Physiology › Smoking Behavior and Cessation
Keywords
nicotine, fear extinction, fear conditioning, contextual fear memory, anxiety disorders, post-traumatic stress disorder, emotional memory
MeSH terms
Acoustic Stimulation, Animals, Conditioning, Classical, Electroshock, Extinction, Psychological, Fear, Female, Male, Mice, Inbred C57BL, Nicotine, Random Allocation, Time Factors, Nicotinic Agonists, Mice

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