Cited by 114Neurotransmitter Receptor Influence on BehaviorOpioid Use Disorder TreatmentSubstance Abuse Treatment and Outcomes

Extended Heroin Access Increases Heroin Choices Over a Potent Nondrug Alternative

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Lenoir, Magalie, Cantin, Lauriane, Vanhille, Nathalie, Serre, Fuschia, Ahmed, Serge H·2013·Neuropsychopharmacology

Abstract

Epidemiological research shows that the proportion of drug users who become addicted to heroin is higher than to cocaine. Here we tested whether this difference could be due to a difference in the addiction liability between the two drugs. Addiction liability was assessed under a discrete-trials choice procedure by measuring the proportion of rats that prefer the drug over a potent alternative reward (ie, water sweetened with saccharin). Previous research on choice between self-administration of i.v. cocaine or sweet water showed that the proportion of cocaine-preferring rats remains relatively low and invariable (ie, 15%), even after extended drug access and regardless of past drug consumption (ie, total drug use before choice testing). By contrast, the present study shows that under similar choice conditions, the proportion of heroin-preferring rats considerably increases with extended heroin access (6-9 h per day for several weeks) and with past heroin consumption, from 11 to 51% at the highest past drug consumption level. At this level, the proportion of drug-preferring rats was about three times higher with heroin than with cocaine (51% vs 15%). This increase in the rate of heroin preference after extended heroin access persisted even after recovery from acute heroin withdrawal. Overall, these findings show that choice procedures are uniquely sensitive to different drugs and suggest that heroin is more addictive than cocaine. This higher addiction liability may contribute to explain why more drug users become addicted to heroin than to cocaine in epidemiological studies.

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  • In rodent studies, choice procedures are resistant to disruption, and a large proportion of rats continue to select a sweet solution rather than the drug even after clear establishment of dependence.

    “In rodent studies, choice procedures are notoriously resistant to disruption, and a large proportion of rats continue to select a sweet solution (e.g., saccharin) rather than the drug even after the clear establishment of dependence (Lenoir et al., 2013;Ahmed, 2018).”

    From Drug Addiction: Hyperkatifeia/Negative Reinforcement as a Framework for Medications Development (2021) · cites this paper as Lenoir et al., 2013

    The Results (page unavailable) show that 8 of 20 rats with extended heroin access still preferred saccharin, and the Discussion describes markers of dependence in that group. But extended access also increased heroin preference from 25% to 60%, so describing the choice procedure as resistant to disruption without that qualification overstates this paper's finding. (LLM, conf=0.86)

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  • In animal models, animals extensively trained to self-administer drugs will readily forego the drug if offered a potent non-drug alternative.

    “The critical role of alternative reinforcers was elegantly brought into modern neuroscience by Ahmed et al., who showed that rats extensively trained to self-administer cocaine would readily forego the drug if offered a sweet solution as an alternative [103].This was later also found to be the case for heroin [103], methamphetamine [104] and alcohol [105].”

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Authors
Lenoir, M., Cantin, L., Vanhille, N., Serre, F., & Ahmed, S. H.
Affiliations
  • Université de Bordeaux (FR)
  • Centre National de la Recherche Scientifique (FR)
Corresponding author
Ahmed, Serge H
Venue
Neuropsychopharmacology
Published
2013-01-15
Volume
38
Issue
7
Pages
1209-1220
ISSN
  • 0893-133X (ISSN-L)
  • 1740-634X
OpenAlex
W2020320083
Cited by
114
References
68
Citations by year
2026: 5 · 2025: 2 · 2024: 3 · 2023: 5 · 2022: 11 · 2021: 14 · 2020: 19 · 2019: 9 · 2018: 9 · 2017: 12 · 2016: 7 · 2015: 4 · 2014: 8 · 2013: 6
FWCI
4.09
Type
journal article
Language
en
Open access
Locations
  • Neuropsychopharmacology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
Funders
  • Agence Nationale de la Recherche
  • Fondation pour la Recherche Médicale
  • Centre National de la Recherche Scientifique
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Opioid Use Disorder Treatment
  • Health Sciences › Medicine › Epidemiology › Substance Abuse Treatment and Outcomes
Keywords
heroin, cocaine, addiction liability, drug preference, self-administration, heroin withdrawal, relapse
MeSH terms
Animals, Choice Behavior, Cocaine, Conditioning, Operant, Heroin, Dose-Response Relationship, Drug, Male, Narcotics, Reward, Saccharin, Self Administration, Behavior, Addictive, Dopamine Uptake Inhibitors, Rats

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