Evidence map›Paper›PMID 22955568›Full record

ArticlePsychopharmacology2013

Interactive effects of methylphenidate and alcohol on discrimination, conditioned place preference and motor coordination in C57BL/6J mice.

William C Griffin, Robin W McGovern, Guinevere H Bell, Patrick K Randall, Lawrence D Middaugh, Kennerly S Patrick

Abstract read
In one paragraph

Article in Psychopharmacology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
1.2field-weighted citation impact, top 24% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 16 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Regulation of Human Hydrolases and Its Implications in Pharmacokinetics and Pharmacodynamics.Drug metabolism and disposition: the biological fate of chemicals · 2024
    Review
  4. Effect of caffeine on alcohol drinking in mice.Alcohol (Fayetteville, N.Y.) · 2021
    Article
  5. Article
  6. Carboxylesterase 1 and Precision Pharmacotherapy: Pharmacogenetics and Nongenetic Regulators.Drug metabolism and disposition: the biological fate of chemicals · 2020
    Review
  7. Review
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. 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

6 authors at 3 institutions in 1 country.

William C GriffinDepartment of Psychiatry and Behavioral Science, Charleston Alcohol Research Center, Center for Drug and Alcohol Programs, Charleston, SC, USA. griffinw@musc.edu
Robin W McGovern
Guinevere H Bell
Patrick K Randall
Lawrence D Middaugh
Kennerly S Patrick
Medical University of South Carolina · USCharleston County's Department of Alcohol and Other Drug Abuse Services · USWestminster College - Pennsylvania · US

Funding

MUSC-Claflin Cooperative for Postdoctoral Academic Career DevelopmentK12GM081265 · NIGMS · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI WRIGHT, CYNTHIA F. · 2007 to 2011
$1.8M
Methylphenidate-Ethanol Interactions in ADHD and Co-abuseR01AA016707 · NIAAA · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI PATRICK, KENNERLY SEXTON · 2006 to 2010
$1.5M
NIAAA NIH HHS R01 AA016707NIGMS NIH HHS K12 GM081265
6 · The paper itself

Abstract

introductionPrior research indicates methylphenidate (MPH) and alcohol (ethanol, EtOH) interact to significantly affect responses humans and mice. The present studies tested the hypothesis that MPH and EtOH interact to potentiate ethanol-related behaviors in mice.

methodsWe used several behavioral tasks including: drug discrimination in MPH-trained and EtOH-trained mice, conditioned place preference (CPP), rota-rod and the parallel rod apparatus. We also used gas chromatographic methods to measure brain tissue levels of EtOH and the D- and L-isomers of MPH and the metabolite, ethylphenidate (EPH).

resultsIn discrimination, EtOH (1 g/kg) produced a significant leftward shift in the MPH generalization curve (1-2 mg/kg) for MPH-trained mice, but no effects of MPH (0.625-1.25 mg/kg) on EtOH discrimination in EtOH-trained mice (0-2.5 g/kg) were observed. In CPP, the MPH (1.25 mg/kg) and EtOH (1.75 g/kg) combination significantly increased time on the drug paired side compared to vehicle (30.7 %), but this was similar to MPH (28.8 %) and EtOH (33.6 %). Footslip errors measured in a parallel rod apparatus indicated that the drug combination was very ataxic, with footslips increasing 29.5 % compared to EtOH. Finally, brain EtOH concentrations were not altered by 1.75 g/kg EtOH combined with 1.25 mg/kg MPH. However, EtOH significantly increased D-MPH and L-EPH without changing L-MPH brain concentrations.

conclusionsThe enhanced behavioral effects when EtOH is combined with MPH are likely due to the selective increase in brain D-MPH concentrations. These studies are consistent with observations in humans of increased interoceptive awareness of the drug combination and provide new clinical perspectives regarding enhanced ataxic effects of this drug combination.

Indexed as

AnimalsBehavior, AnimalConditioning, PsychologicalDiscrimination, PsychologicalDose-Response Relationship, DrugDrug InteractionsEthanolMaleMethylphenidateMiceMice, Inbred C57BLMotor ActivityEthanolMethylphenidate

Identifiers

PMID22955568
PMCPMC3547134
OpenAlexW2080562748

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.