Evidence map›Paper›PMID 28916995›Full record

ArticlePsychopharmacology2017

Effects of environmental enrichment on self-administration of the short-acting opioid remifentanil in male rats.

Rebecca S Hofford, Jonathan J Chow, Joshua S Beckmann, Michael T Bardo

Open access · greenAbstract read
In one paragraph

Article in Psychopharmacology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
1.6field-weighted citation impact, top 19% 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

26 citing papers in PubMed, 36 citations in OpenAlex.

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  19. Review
  20. Medications Development for Treatment of Opioid Use Disorder.Cold Spring Harbor perspectives in medicine · 2021
    Review
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

4 authors at 1 institution in 1 country.

Rebecca S HoffordDepartment of Psychology, BBSRB, University of Kentucky, Room 448C, Lexington, KY, 40536-0509, USA. rebecca.hofford@uky.edu.ORCID http://orcid.org/0000-0002-4381-4173
Jonathan J ChowDepartment of Psychology, BBSRB, University of Kentucky, Room 448C, Lexington, KY, 40536-0509, USA.
Joshua S BeckmannDepartment of Psychology, BBSRB, University of Kentucky, Room 448C, Lexington, KY, 40536-0509, USA.
Michael T BardoDepartment of Psychology, BBSRB, University of Kentucky, Room 448C, Lexington, KY, 40536-0509, USA.
University of Kentucky · US

Funding

Research Training in Drug Abuse BehaviorT32DA035200 · NIDA · UNIVERSITY OF KENTUCKY · PI CRAIG R RUSH, William Walton Stoops · 2013 to 2026
$4.4M
Training in Drug Abuse Related Research.T32DA016176 · NIDA · UNIVERSITY OF KENTUCKY · PI DWOSKIN, LINDA P · 2004 to 2020
$4.0M
NOVELTY, DOPAMINE AND RESPONSE TO AMPHETAMINER01DA012964 · NIDA · YAUPON THERAPEUTICS, INC. · PI BARDO, MICHAEL T · 2000 to 2013
$3.7M
Tonic and Phasic Glutamate Release in Incentive Salience and Cocaine ReinforcemenR00DA033373 · NIDA · UNIVERSITY OF KENTUCKY · PI BECKMANN, JOSHUA · 2014 to 2016
$741k
Tonic and Phasic Glutamate Release in Incentive Salience and Cocaine ReinforcemenK99DA033373 · NIDA · UNIVERSITY OF KENTUCKY · PI BECKMANN, JOSHUA · 2012 to 2013
$263k
Social isolation: effects on the stress axis and stimulant self-administrationF32DA036291 · NIDA · UNIVERSITY OF KENTUCKY · PI HOFFORD, REBECCA · 2014 to 2014
$40k
NIDA NIH HHS DA012964NIDA NIH HHS DA016176NIDA NIH HHS DA033373NIDA NIH HHS DA035200NIDA NIH HHS DA036291NIDA NIH HHS F32 DA036291NIDA NIH HHS K99 DA033373NIDA NIH HHS R00 DA033373NIDA NIH HHS R01 DA012964NIDA NIH HHS T32 DA016176NIDA NIH HHS T32 DA035200
6 · The paper itself

Abstract

backgroundOpioid abuse is a major problem around the world. Identifying environmental factors that contribute to opioid abuse and addiction is necessary for decreasing this epidemic. In rodents, environmental enrichment protects against the development of low dose stimulant self-administration, but studies examining the effect of enrichment and isolation (compared to standard housing) on the development of intravenous opioid self-administration have not been conducted. The present study investigated the role of environmental enrichment on self-administration of the short-acting μ-opioid remifentanil.

methodsRats were raised in an enriched condition (Enr), standard condition (Std), or isolated condition (Iso) beginning at 21 days of age and were trained to lever press for 1 or 3 μg/kg/infusion remifentanil in young adulthood. Acquisition of self-administration and responding during increasing fixed ratio requirements were assessed, and a dose-response curve was generated.

resultsIn all phases, Enr rats lever pressed significantly less than Std and Iso rats, with Enr rats pressing between 9 and 40% the amount of Iso rats. Enr rats did not acquire remifentanil self-administration when trained with 1 μg/kg/infusion, did not increase responding over increasing FR when trained at either dose, and their dose-response curves were flattened compared to Std and Iso rats. When expressed as economic demand curves, Enr rats displayed a decrease in both essential value (higher α) and reinforcer intensity (Q

conclusionEnvironmental enrichment reduced remifentanil intake, suggesting that social and environmental novelty may protect against opioid abuse.

Indexed as

EnvironmentAnalgesics, OpioidAnimalsBehavior, AddictiveDose-Response Relationship, DrugInfusions, IntravenousMaleOpioid-Related DisordersPiperidinesRatsRats, Sprague-DawleyRemifentanilSelf AdministrationTreatment OutcomeAnalgesics, OpioidPiperidinesRemifentanilEnvironmental enrichmentOpioidRemifentanilSelf-administrationSocial isolation

Identifiers

PMID28916995
PMCPMC6541008
OpenAlexW2754273660

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.