Evidence map›Paper›PMID 19005643›Full record

ArticlePsychopharmacology2009

Environmental enrichment decreases the rewarding but not the activating effects of heroin.

Rana El Rawas, Nathalie Thiriet, Virginie Lardeux, Mohamed Jaber, Marcello Solinas

Abstract read
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In one paragraph

Article in Psychopharmacology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 11% 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

60 citing papers in PubMed, 1 synthesis or guideline pooled it, 120 citations in OpenAlex.

  1. Pooled it
  2. Neighborhood perceptions are associated with tobacco dependence among African American smokers.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2012
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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

5 authors at 2 institutions in 1 country.

Rana El RawasInstitut de Physiologie et Biologie Cellulaires, University of Poitiers, CNRS, 40 avenue du recteur Pineau, Poitiers 86022, France.
Nathalie Thiriet
Virginie Lardeux
Mohamed Jaber
Marcello Solinas
Centre National de la Recherche Scientifique · FRUniversité de Poitiers · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

rationaleEnvironmental conditions during adolescence, a critical period of brain maturation, can have important consequences on subsequent vulnerability to drugs of abuse. We have recently found that the behavioral effects of cocaine as well as its ability to increase expression of zif-268 are reduced in mice reared in enriched environments (EE).

objectivesThe present experiments examined whether environmental enrichment has protective influences on the effects of heroin, a drug of addiction whose mechanism of action differs from that of cocaine. MATERIALS AND

methodsMice were housed either in standard environments (SE) or in EE from weaning to adulthood before any drug exposure. EE were constituted by big housing cages and contained constantly a running wheel and a small house and four to five toys that were changed once a week with new toys of different shapes and colors. We assessed the influence of EE on the ability of heroin to (1) induce conditioned place preferences, (2) induce behavioral sensitization, (3) increase dopamine levels in the nucleus accumbens (NAc), and (4) increase expression of the immediate early gene zif-268 in the striatum.

resultsConditioned place preference but not behavioral sensitization was reduced in EE mice compared to SE mice. Heroin induced similar increases in dopamine levels and in the expression of zif-268 in the NAc of EE and SE mice.

conclusionsThe rewarding effects of heroin are blunted by EE and appear to be, at least in part, independent from activation of the mesolimbic system.

Indexed as

EnvironmentRewardAnimalsBehavior, AnimalConditioning, PsychologicalHeroinHeroin DependenceMaleMiceMice, Inbred C57BLHeroin

Identifiers

PMID19005643
OpenAlexW2039924325

What OpenQuestion holds

Textmetadata
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.