Evidence map›Paper›PMID 24821405›Full record

ArticleBehavioural brain research2014

Environmental enrichment reduces methamphetamine cue-induced reinstatement but does not alter methamphetamine reward or VMAT2 function.

Rebecca S Hofford, Mahesh Darna, Carrie E Wilmouth, Linda P Dwoskin, Michael T Bardo

Open access · greenAbstract read
In one paragraph

Article in Behavioural brain research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
1.5field-weighted citation impact, top 21% 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

22 citing papers in PubMed, 42 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
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

5 authors at 1 institution in 1 country.

Rebecca S HoffordDepartment of Psychology, University of Kentucky, Lexington, KY 40536, USA; Center for Drug Abuse Research Translation, University of Kentucky, Lexington, KY 40536, USA.
Mahesh DarnaDepartment of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY 40536, USA; Center for Drug Abuse Research Translation, University of Kentucky, Lexington, KY 40536, USA.
Carrie E WilmouthDepartment of Psychology, University of Kentucky, Lexington, KY 40536, USA; Center for Drug Abuse Research Translation, University of Kentucky, Lexington, KY 40536, USA.
Linda P DwoskinDepartment of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY 40536, USA; Center for Drug Abuse Research Translation, University of Kentucky, Lexington, KY 40536, USA.
Michael T BardoDepartment of Psychology, University of Kentucky, Lexington, KY 40536, USA; Center for Drug Abuse Research Translation, University of Kentucky, Lexington, KY 40536, USA. Electronic address: mbardo@uky.edu.
University of Kentucky · US

Funding

Training and Pilot CoreP50DA005312 · NIDA · UNIVERSITY OF KENTUCKY · PI BARDO, MICHAEL T · 1987 to 2016
$19.5M
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
Development of Novel Therapies or Methamphetamine AbuseU01DA013519 · NIDA · UNIVERSITY OF KENTUCKY · PI DWOSKIN, LINDA P · 2012 to 2016
$3.2M
NIDA NIH HHS P50 DA005312NIDA NIH HHS P50 DA05312NIDA NIH HHS R01 DA012964NIDA NIH HHS R01 DA12964NIDA NIH HHS T32 DA016176NIDA NIH HHS T32 DA035200NIDA NIH HHS U01 DA013519NIDA NIH HHS U01 DA13519
6 · The paper itself

Abstract

Environmental factors influence a variety of health-related outcomes. In general, being raised in an environment possessing social, sensory, and motor enrichment reduces the rewarding effects of various drugs, thus protecting against abuse vulnerability. However, in the case of methamphetamine (METH), which acts at the vesicular monoamine transporter 2 (VMAT2) to enhance dopamine release from the cytosol, previous evidence suggests that METH reward may not be altered by environmental enrichment. This study examined the influence of an enriched environment on measures of METH reward, METH seeking, and VMAT2 function. Rats were raised from weaning to adulthood in either an enriched environment (presence of social cohorts and novel objects) or an isolated environment (no cohorts or novel objects). Rats in these two conditions were subsequently tested for their acquisition of conditioned place preference (CPP), METH self-administration, maintenance of self-administration at various unit doses of METH (0.001-0.5mg/kg/infusion), and cue-induced reinstatement. VMAT2 function in striatum from these two groups also was assessed. No significant environment effects were found in CPP or METH self-administration, which paralleled a lack of effect in VMAT2 function between groups. However, cue-induced reinstatement was reduced by environmental enrichment. Together, these results suggest that environmental enrichment does not alter VMAT2 function involved in METH reward. However, the enrichment-induced decrease in cue-induced reinstatement indicates that enrichment may have a beneficial effect against relapse following a period of extinction via a neural mechanism other than striatal VMAT2 function.

Indexed as

CuesEnvironmentRewardAnimalsConditioning, OperantDopamine Uptake InhibitorsDose-Response Relationship, DrugMaleMethamphetamineRatsRats, Sprague-DawleySelf AdministrationVesicular Monoamine Transport ProteinsDopamine Uptake InhibitorsMethamphetamineVesicular Monoamine Transport ProteinsConditioned place preference (CPP)Environmental enrichmentMethamphetamine (METH)Self-administrationSocial isolationVesicular monoamine transporter 2 (VMAT2)

Identifiers

PMID24821405
PMCPMC4096828
OpenAlexW1996402667

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.