Evidence map›Paper›PMID 30846301›Full record

ArticleBiological psychiatry2019

Incubation of Cocaine Craving After Intermittent-Access Self-administration: Sex Differences and Estrous Cycle.

Céline Nicolas, Trinity I Russell, Anne F Pierce, Steeve Maldera, Amanda Holley, Zhi-Bing You, Margaret M McCarthy, Yavin Shaham, Satoshi Ikemoto

Open access · greenAbstract read
In one paragraph

Article in Biological psychiatry, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 107 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
107citing papers in PubMed, 3 pooled it
8.8field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

107 citing papers in PubMed, 3 syntheses or guidelines pooled it, 156 citations in OpenAlex.

  1. Pooled it
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  13. Cocaine self-administration in adult female and male rhesus monkeys: longitudinal comparison with adolescent behavior and role of early life stress.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2025
    Article
  14. Article
  15. Changes in nucleus accumbens core translatome accompanying incubation of cocaine craving.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2025
    Article
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47 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 2 institutions in 1 country.

Céline NicolasBehavioral Neuroscience Branch, Intramural Research Program, National Institute on Drug Abuse, Baltimore, Maryland.
Trinity I RussellBehavioral Neuroscience Branch, Intramural Research Program, National Institute on Drug Abuse, Baltimore, Maryland.
Anne F PierceBehavioral Neuroscience Branch, Intramural Research Program, National Institute on Drug Abuse, Baltimore, Maryland.
Steeve MalderaBehavioral Neuroscience Branch, Intramural Research Program, National Institute on Drug Abuse, Baltimore, Maryland.
Amanda HolleyDepartment of Pharmacology, University of Maryland School of Medicine, Baltimore, Maryland.
Zhi-Bing YouMolecular Targets and Medications Discovery Branch, Intramural Research Program, National Institute on Drug Abuse, Baltimore, Maryland.
Margaret M McCarthyDepartment of Pharmacology, University of Maryland School of Medicine, Baltimore, Maryland.
Yavin ShahamBehavioral Neuroscience Branch, Intramural Research Program, National Institute on Drug Abuse, Baltimore, Maryland.
Satoshi IkemotoBehavioral Neuroscience Branch, Intramural Research Program, National Institute on Drug Abuse, Baltimore, Maryland. Electronic address: sikemoto@intra.nida.nih.gov.
National Institute on Drug Abuse · USUniversity of Maryland, Baltimore · US

Funding

Neurobiology Of Relapse To Opiate and Psychostimulant DrugsZIADA000434 · NIDA · NATIONAL INSTITUTE ON DRUG ABUSE · PI SHAHAM, YAVIN · 2009 to 2025
$39.8M
Neural mechanisms involved in the development of addiction-like symptomsZIADA000616 · NIDA · NATIONAL INSTITUTE ON DRUG ABUSE · PI IKEMOTO, SATOSHI · 2017 to 2020
$2.0M
Intramural NIH HHS ZIA DA000616
6 · The paper itself

Abstract

backgroundStudies using continuous-access drug self-administration showed that cocaine seeking increases during abstinence (incubation of cocaine craving). Recently, studies using intermittent-access self-administration showed increased motivation to self-administer and seek cocaine. We examined whether intermittent cocaine self-administration would potentiate incubation of craving in male and female rats and examined the estrous cycle's role in this incubation.

methodsIn experiment 1, male and female rats self-administered cocaine either continuously (8 hours/day) or intermittently (5 minutes ON, 25 minutes OFF × 16) for 12 days, followed by relapse tests after 2 or 29 days. In experiments 2 and 3, female rats self-administered cocaine intermittently for six, 12, or 18 sessions. In experiment 4, female rats self-administered cocaine continuously followed by relapse tests after 2 or 29 days. In experiments 3 and 4, the estrous cycle was measured using a vaginal smear test.

resultsIncubation of cocaine craving was observed in both sexes after either intermittent or continuous drug self-administration. Independent of access condition and abstinence day, cocaine seeking was higher in female rats than in male rats. In both sexes, cocaine seeking on both abstinence days was higher after intermittent drug access than after continuous drug access. In female rats, incubation of craving after either intermittent or continuous drug access was significantly higher during estrus than during non-estrus; for intermittent drug access, this effect was independent of the training duration.

conclusionsIn both sexes, intermittent cocaine access caused time-independent increases in drug seeking during abstinence. In female rats, the time-dependent increase in drug seeking (incubation) is critically dependent on the estrous cycle phase.

Indexed as

Sex CharacteristicsAnimalsCocaineCravingEstrous CycleExtinction, PsychologicalFemaleMaleRatsSelf AdministrationTime FactorsCocaineCocaine self-administrationEstrous cycleIncubation of cravingIntermittent accessRelapseSex differences

Identifiers

PMID30846301
PMCPMC6534474
OpenAlexW2914795696

What OpenQuestion holds

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Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.