Evidence map›Paper›PMID 25600245›Full record

ArticleNeuropharmacology2015

Intravenous self-administration of mephedrone, methylone and MDMA in female rats.

Kevin M Creehan, Sophia A Vandewater, Michael A Taffe

Open access · bronzeAbstract read
In one paragraph

Article in Neuropharmacology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 57 papers.

0numbers the graph read from it
0cells of the map it votes in
57citing papers in PubMed
9.4field-weighted citation impact, top 1% 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

57 citing papers in PubMed, 98 citations in OpenAlex.

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  15. An updated review on synthetic cathinones.Archives of toxicology · 2021
    Review
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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

3 authors at 1 institution in 1 country.

Kevin M CreehanCommittee on the Neurobiology of Addictive Disorders, The Scripps Research Institute, La Jolla, CA, USA.
Sophia A VandewaterCommittee on the Neurobiology of Addictive Disorders, The Scripps Research Institute, La Jolla, CA, USA.
Michael A TaffeCommittee on the Neurobiology of Addictive Disorders, The Scripps Research Institute, La Jolla, CA, USA. Electronic address: mtaffe@scripps.edu.
Scripps Research Institute · US

Funding

Immunopharmacotherapy for Methamphetamine AddictionR01DA024705 · NIDA · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI TAFFE, MICHAEL A. · 2008 to 2018
$4.4M
Determinants of transition states in MDMA self-administrationR01DA024105 · NIDA · SCRIPPS RESEARCH INSTITUTE, THE · PI TAFFE, MICHAEL A. · 2011 to 2015
$1.9M
NIDA NIH HHS R01 DA024105NIDA NIH HHS R01 DA024705
6 · The paper itself

Abstract

Male rats will intravenously self-administer (IVSA) the substituted cathinone stimulants ("bath salts") mephedrone (4-methylmethcathione) and methylone (3,4-methylenedioxymethcathinone) robustly, whereas the IVSA of 3,4-methylenedioxymethamphetamine (MDMA) is inconsistent in many rat models. There are no data available on the self-administration of these drugs in female rats, thus a study was undertaken to contrast them directly. Groups of female Wistar rats were trained to self-administer mephedrone, methylone or MDMA (0.5 mg/kg/inf) under a Fixed-Ratio (FR) 1 schedule of reinforcement for 14 sessions. Following the acquisition interval, animals were evaluated in FR (0.0, 0.125, 0.25, 0.5, 1.0, 2.5 mg/kg/inf) and PR (0.125, 1.0 mg/kg/inf) dose-substitution procedures. The results show that female rats acquired the self-administration of all three compounds with intakes in mephedrone-trained rats that were significantly higher than that of methylone-trained or MDMA-trained rats. In dose-substitution under either FR or PR contingencies, however, the potencies of all three drugs were similar within the original training groups. The mephedrone-trained animals exhibited higher intakes of all drugs during dose-substitution, indicating lasting consequences of the training drug. Abuse liability of these three compounds is therefore predicted to be similar in established stimulant users but may differ in liability if they are primary drugs of initiation.

Indexed as

Administration, IntravenousAnimalsCentral Nervous System StimulantsConditioning, OperantDiscrimination, PsychologicalDose-Response Relationship, DrugFemaleHallucinogensMethamphetamineN-Methyl-3,4-methylenedioxyamphetamineRatsRats, WistarReinforcement ScheduleSelf AdministrationTime FactorsCentral Nervous System StimulantsHallucinogensmephedroneMethamphetaminemethyloneN-Methyl-3,4-methylenedioxyamphetamine3,4-methylenedioxymethamphetamine (PubChem CID:1615)4-methylmethcathinone (PubChemCID: 45266826)Bath saltsDrug addictionEcstasymethylone (PubChem CID: 45789647)RewardSubstance abuse

Identifiers

PMID25600245
PMCPMC4346510
OpenAlexW2042586252

What OpenQuestion holds

Textmetadata
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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.