Evidence map›Paper›PMID 21480727›Full record

ArticleExperimental and clinical psychopharmacology2011

Discriminative and reinforcing stimulus effects of nicotine, cocaine, and cocaine + nicotine combinations in rhesus monkeys.

Nancy K Mello, Jennifer L Newman

Abstract read
In one paragraph

Article in Experimental and clinical psychopharmacology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
2.1field-weighted citation impact, top 13% 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

32 citing papers in PubMed, 53 citations in OpenAlex.

  1. Nicotine effects on associative learning in human non-smokers.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2018
    Trial
  2. Evaluating Nicotine Craving, Withdrawal, and Substance Use as Mediators of Smoking Cessation in Cocaine- and Methamphetamine-Dependent Patients.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2016
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  9. Nicotine Enhances Intravenous Self-administration of Cannabinoids in Adult Rats.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2023
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

Nancy K MelloAlcohol and Drug Abuse Research Center, McLean Hospital, Harvard Medical School, 115 Mill Street, Belmont, MA 02478, USA. mello@mclean.harvard.edu
Jennifer L Newman
Harvard University · US

Funding

Preclinical Evaluation of Medications to Treat Polydrug AddictionR01DA026892 · NIDA · MCLEAN HOSPITAL · PI BERGMAN, JACK · 2009 to 2013
$2.7M
Sex/Gender Factors in Nicotine AddictionR01DA024642 · NIDA · MCLEAN HOSPITAL · PI CAINE, SIMON BARAK · 2008 to 2012
$1.7M
NIDA NIH HHS R01 DA024642NIDA NIH HHS R01 DA026892NIDA NIH HHS R01-DA026892
6 · The paper itself

Abstract

Concurrent cigarette smoking and cocaine use is well documented. However, the behavioral pharmacology of cocaine and nicotine combinations is poorly understood, and there is a need for animal models to examine this form of polydrug abuse. The purpose of this study was twofold: first to assess the effects of nicotine on the discriminative stimulus effects of cocaine, and second, to study self-administration of nicotine/cocaine combinations in a novel polydrug abuse model. In drug discrimination experiments, nicotine increased the discriminative stimulus effects of low cocaine doses in two of three monkeys, but nicotine did not substitute for cocaine in any monkey. Self-administration of cocaine and nicotine alone, and cocaine + nicotine combinations was studied under a second-order fixed ratio 2, variable ratio 16 (FR2[VR16:S]) schedule of reinforcement. Cocaine and nicotine alone were self-administered in a dose-dependent manner. The combination of marginally reinforcing doses of cocaine and nicotine increased drug self-administration behavior above levels observed with the same dose of either cocaine or nicotine alone. These findings indicate that nicotine may increase cocaine's discriminative stimulus and reinforcing effects in rhesus monkeys, and illustrate the feasibility of combining cocaine and nicotine in a preclinical model of polydrug abuse. Further studies of the behavioral effects of nicotine + cocaine combinations will contribute to our understanding the pharmacology of dual nicotine and cocaine dependence, and will be useful for evaluation of new treatment medications.

Indexed as

AnimalsCocaineCocaine-Related DisordersDiscrimination, PsychologicalDose-Response Relationship, DrugMacaca mulattaMaleModels, AnimalNicotineReinforcement ScheduleSelf AdministrationTobacco Use DisorderCocaineNicotine

Identifiers

PMID21480727
PMCPMC3144152
OpenAlexW2075240784

What OpenQuestion holds

Textmetadata
LicenceTDM
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.