Evidence map›Paper›PMID 25817856›Full record

ArticleCurrent molecular medicine2015

Improvement of learning and increase in dopamine level in the frontal cortex by methylphenidate in mice lacking dopamine transporter.

Y Takamatsu, Y Hagino, A Sato, T Takahashi, S Y Nagasawa, Y Kubo, M Mizuguchi, G R Uhl, I Sora, K Ikeda

Open access · bronzeAbstract read
In one paragraph

Article in Current molecular medicine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.3field-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

13 citing papers in PubMed, 21 citations in OpenAlex.

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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

10 authors at 5 institutions in 2 countries.

Y Takamatsu
Y Hagino
A Sato
T Takahashi
S Y Nagasawa
Y Kubo
M Mizuguchi
G R Uhl
I Sora
K IkedaAddictive Substance Project, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya-ku, Tokyo 156-8506, Japan. ikeda-kz@igakuken.or.jp.
Tokyo Metropolitan Institute of Medical Science · JPThe University of Tokyo · JPKobe University · JPNational Institutes of Health · USTohoku University · JP

Funding

Genetic Approaches To Characterizing Drug Responses And Vulnerabilities: MiceZIADA000165 · NIDA · NATIONAL INSTITUTE ON DRUG ABUSE · PI UHL, GEORGE RICHARD · 2009 to 2016
$7.9M
6 · The paper itself

Abstract

The symptoms of attention-deficit/hyperactivity disorder (ADHD) are characterized by inattention and hyperactivity-impulsivity. It is a common childhood neurodevelopmental disorder that often persists into adulthood. Improvements in ADHD symptoms using psychostimulants have been recognized as a paradoxical calming effect. The psychostimulant methylphenidate (MPH) is currently used as the first-line medication for the management of ADHD. Recent studies have drawn attention to altered dopamine-mediated neurotransmission in ADHD, particularly reuptake by the dopamine transporter (DAT). This hypothesis is supported by the observation that DAT knockout mice exhibit marked hyperactivity that is responsive to acute MPH treatment. However, other behaviors relevant to ADHD have not been fully clarified. In the present study, we observed learning impairment in shuttle-box avoidance behavior together with hyperactivity in a novel environment in DAT knockout mice. Methylphenidate normalized these behaviors and enhanced escape activity in the tail suspension test. Interestingly, the effective dose of MPH increased extracellular dopamine in the prefrontal cortex but not striatum, suggesting an important role for changes in prefrontal dopamine in ADHD. Research that uses rodent models such as DAT knockout mice may be useful for elucidating the pathophysiology of ADHD.

Indexed as

AnimalsAttention Deficit Disorder with HyperactivityAvoidance LearningCorpus StriatumDopamineDopamine Uptake InhibitorsDrug Evaluation, PreclinicalFemaleMaleMethylphenidateMice, 129 StrainMice, Inbred C57BLMice, KnockoutMotor ActivityPrefrontal CortexDopamineDopamine Uptake InhibitorsMethylphenidate

Identifiers

PMID25817856
PMCPMC5384353
OpenAlexW2103359932

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.