Evidence map›Paper›PMID 26422146›Full record

ArticlePloS one2015

Attenuated Tonic and Enhanced Phasic Release of Dopamine in Attention Deficit Hyperactivity Disorder.

Rajendra D Badgaiyan, Sampada Sinha, Munawwar Sajjad, David S Wack

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed, 2 pooled it
4.8field-weighted citation impact, top 4% 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

42 citing papers in PubMed, 2 syntheses or guidelines pooled it, 83 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
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  14. Neurogenetics and Epigenetics of Loneliness.Psychology research and behavior management · 2023
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  16. The effects of early life stress on impulsivity.Neuroscience and biobehavioral reviews · 2022
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  17. 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

4 authors at 2 institutions in 1 country.

Rajendra D BadgaiyanMolecular and Functional Imaging Laboratory, Department of Psychiatry, University of Minnesota, Minneapolis, Minnesota, United States of America; Neuromodulation Program, University of Minnesota Twin City Campus, Minneapolis, Minnesota, United States of America; Laboratory of Advanced Radiochemistry, University of Minnesota Twin City Campus, Minneapolis, Minnesota, United States of America.
Sampada SinhaMolecular and Functional Imaging Laboratory, Department of Psychiatry, University of Minnesota, Minneapolis, Minnesota, United States of America.
Munawwar SajjadDepartment of Nuclear Medicine, University at Buffalo, Buffalo, New York, United States of America.
David S WackDepartment of Nuclear Medicine, University at Buffalo, Buffalo, New York, United States of America.
University at Buffalo, State University of New York · USUniversity of Minnesota · US

Funding

Dopamine Neurotransmission in Tourette SyndromeR01NS073884 · NINDS · UNIVERSITY OF MINNESOTA · PI BADGAIYAN, RAJENDRA D · 2012 to 2016
$2.2M
Detection of Dopamine Release During a Cognitive TaskR21MH073624 · NIMH · MASSACHUSETTS GENERAL HOSPITAL · PI BADGAIYAN, RAJENDRA D · 2005 to 2006
$368k
NIMH NIH HHS 1R21MH073624NIMH NIH HHS R21 MH073624NINDS NIH HHS 1R01NS073884NINDS NIH HHS R01 NS073884
6 · The paper itself

Abstract

It is unclear whether attention deficit hyperactive disorder (ADHD) is a hypodopaminergic or hyperdopaminergic condition. Different sets of data suggest either hyperactive or hypoactive dopamine system. Since indirect methods used in earlier studies have arrived at contradictory conclusions, we directly measured the tonic and phasic release of dopamine in ADHD volunteers. The tonic release in ADHD and healthy control volunteers was measured and compared using dynamic molecular imaging technique. The phasic release during performance of Eriksen's flanker task was measured in the two groups using single scan dynamic molecular imaging technique. In these experiments volunteers were positioned in a positron emission tomography (PET) camera and administered a dopamine receptor ligand (11)C-raclopride intravenously. After the injection PET data were acquired dynamically while volunteers either stayed still (tonic release experiments) or performed the flanker task (phasic release experiments). PET data were analyzed to measure dynamic changes in ligand binding potential (BP) and other receptor kinetic parameters. The analysis revealed that at rest the ligand BP was significantly higher in the right caudate of ADHD volunteers suggesting reduced tonic release. During task performance significantly lower ligand BP was observed in the same area, indicating increased phasic release. In ADHD tonic release of dopamine is attenuated and the phasic release is enhanced in the right caudate. By characterizing the nature of dysregulated dopamine neurotransmission in ADHD, the results explain earlier findings of reduced or increased dopaminergic activity.

Indexed as

AdultAttention Deficit Disorder with HyperactivityCase-Control StudiesCorpus StriatumDopamineFemaleHumansLigandsMaleMolecular ImagingPositron-Emission TomographyProtein BindingPsychomotor PerformanceReceptors, DopamineYoung AdultDopamineLigandsReceptors, Dopamine

Identifiers

PMID26422146
PMCPMC4589406
OpenAlexW2335928261

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.