Evidence map›Paper›PMID 22914073›Full record

ArticleBehavioural pharmacology2012

Environmental enrichment during development decreases intravenous self-administration of methylphenidate at low unit doses in rats.

Kristin M Alvers, Julie A Marusich, Cassandra D Gipson, Joshua S Beckmann, Michael T Bardo

Abstract read
In one paragraph

Article in Behavioural pharmacology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
3.1field-weighted citation impact, top 9% 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

24 citing papers in PubMed, 43 citations in OpenAlex.

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  19. Inoculation stress hypothesis of environmental enrichment.Neuroscience and biobehavioral reviews · 2015
    Review
  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.

Kristin M AlversCenter for Drug Abuse Research Translation, University of Kentucky, Lexington, Kentucky 40536-0509, USA.
Julie A Marusich
Cassandra D Gipson
Joshua S Beckmann
Michael T Bardo
University of Kentucky · US

Funding

Training and Pilot CoreP50DA005312 · NIDA · UNIVERSITY OF KENTUCKY · PI BARDO, MICHAEL T · 1987 to 2016
$19.5M
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
RESEARCH TRAINING IN DRUG ABUSE BEHAVIORT32DA007304 · NIDA · UNIVERSITY OF KENTUCKY · PI RUSH, CRAIG R · 1998 to 2012
$3.1M
NIDA NIH HHS P50 DA005312NIDA NIH HHS P50 DA05312NIDA NIH HHS R01 DA012964NIDA NIH HHS R01 DA12964NIDA NIH HHS T32 DA007304NIDA NIH HHS T32 DA016176
6 · The paper itself

Abstract

Despite the efficacy and widespread use of methylphenidate (MPH) as a treatment modality for attention deficit hyperactivity disorder, clinical and preclinical findings indicate that it has abuse potential. Environmental enrichment reduces susceptibility to cocaine and amphetamine self-administration and decreases impulsive behavior, but its effects on MPH self-administration are unknown. The present experiments sought to determine the influence of environmental enrichment on MPH self-administration. Male rats were raised in an enriched condition (EC) or isolated condition (IC). They were trained to self-administer MPH (0.3 mg/kg/infusion) and then exposed to varying doses of MPH on either a fixed-ratio (experiment 1) or a progressive-ratio (experiment 2) schedule of reinforcement. EC rats earned significantly fewer infusions of MPH at low doses (0.03 and 0.056 mg/kg/infusion) compared with IC rats under both schedules; however, no differences were observed at high unit doses (0.1-1.0 mg/kg/infusion). During saline substitution at the end of MPH self-administration, EC rats also responded less for saline compared with IC rats, indicative of more rapid extinction. As with other stimulant drugs with different mechanisms of action, environmental enrichment during development protects against self-administration of MPH at low unit doses but not at high unit doses.

Indexed as

Reinforcement ScheduleSocial EnvironmentAnimalsConditioning, OperantDopamine Uptake InhibitorsDose-Response Relationship, DrugInfusions, IntravenousMaleMethylphenidateRatsRats, Sprague-DawleySelf AdministrationSocial IsolationDopamine Uptake InhibitorsMethylphenidate

Identifiers

PMID22914073
PMCPMC3674782
OpenAlexW2051028855

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.