Evidence map›Paper›PMID 20828543›Full record

ArticleBrain research2011

Deletion of adenosine A₁ or A(₂A) receptors reduces L-3,4-dihydroxyphenylalanine-induced dyskinesia in a model of Parkinson's disease.

Danqing Xiao, Jared J Cassin, Brian Healy, Thomas C Burdett, Jiang-Fan Chen, Bertil B Fredholm, Michael A Schwarzschild

Abstract read
In one paragraph

Article in Brain research, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
2.2field-weighted citation impact, top 13% 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

23 citing papers in PubMed, 47 citations in OpenAlex.

  1. Caffeine consumption and risk of dyskinesia in CALM-PD.Movement disorders : official journal of the Movement Disorder Society · 2013
    Trial
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  9. Article
  10. CK2 Oppositely Modulates l-DOPA-Induced Dyskinesia via Striatal Projection Neurons Expressing D1 or D2 Receptors.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2017
    Article
  11. Article
  12. Article
  13. Article
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  15. Review
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  19. The emerging role of nutrition in Parkinson's disease.Frontiers in aging neuroscience · 2014
    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

7 authors at 4 institutions in 2 countries.

Danqing XiaoMassGeneral Institute for Neurolodegenerative Disease, Department of Neurology, Massachusetts General Hospital, Charlestown, MA, USA.
Jared J Cassin
Brian Healy
Thomas C Burdett
Jiang-Fan Chen
Bertil B Fredholm
Michael A Schwarzschild
MaineGeneral Medical Center · USMassachusetts General Hospital · USBoston University · USKarolinska Institutet · SE

Funding

Translational Foundation of Adenosine Antagonist Use for DyskinesiasR01NS054978 · NINDS · MASSACHUSETTS GENERAL HOSPITAL · PI SCHWARZSCHILD, MICHAEL A · 2006 to 2010
$2.1M
Pursuing purinergic pathways to clinical trials for Parkinson's diseaseK24NS060991 · NINDS · MASSACHUSETTS GENERAL HOSPITAL · PI SCHWARZSCHILD, MICHAEL A · 2008 to 2012
$954k
NINDS NIH HHS K24 NS060991NINDS NIH HHS NS054978NINDS NIH HHS NS060991NINDS NIH HHS R01 NS054978
6 · The paper itself

Abstract

Adenosine A(₂A) receptor antagonism provides a promising approach to developing nondopaminergic therapy for Parkinson's disease (PD). Clinical trials of A(₂A) antagonists have targeted PD patients with L-3,4-dihydroxyphenylalanine (L-DOPA)-induced dyskinesia (LID) in an effort to improve parkinsonian symptoms. The role of adenosine in the development of LID is little known, especially regarding its actions via A₁ receptors. We aimed to examine the effects of genetic deletion and pharmacological blockade of A₁ and/or A(₂A) receptors on the development of LID, on the induction of molecular markers of LID including striatal preprodynorphin and preproenkephalin (PPE), and on the integrity of dopaminergic nigrostriatal neurons in hemiparkinsonian mice. Following a unilateral 6-hydroxydopamine lesion A₁, A(₂A) and double A₁-A(₂A) knockout (KO) and wild-type littermate mice, and mice pretreated with caffeine (an antagonist of both A₁ and A(₂A) receptors) or saline were treated daily for 18-21 days with a low dose of L-DOPA. Total abnormal involuntary movements (AIMs, a measure of LID) were significantly attenuated (p<0.05) in A₁ and A(₂A) KOs, but not in A₁-A(₂A) KOs and caffeine-pretreated mice. An elevation of PPE mRNA ipsilateral to the lesion in WT mice was reduced in all KO mice. In addition, neuronal integrity assessed by striatal dopamine content was similar in all KOs and caffeine-pretreated mice following 6-hydroxydopamine lesioning. Our findings raise the possibility that A₁ or A(₂A) receptors blockade might also confer a disease-modifying benefit of reduced risk of disabling LID, whereas the effect of their combined inactivation is less clear.

Indexed as

Adrenergic AgentsAnimalsAntiparkinson AgentsCaffeineCorpus StriatumDisease Models, AnimalDynorphinsDyskinesia, Drug-InducedEnkephalinsGene Expression RegulationLevodopaMiceMice, Inbred C57BLMice, KnockoutOxidopamineParkinson DiseaseAdrenergic AgentsAntiparkinson AgentsCaffeineDynorphinsEnkephalinsLevodopaOxidopaminepre-prodynorphinpreproenkephalinProtein PrecursorsPurinergic P1 Receptor AntagonistsReceptor, Adenosine A1Receptor, Adenosine A2ARNA, Messenger

Identifiers

PMID20828543
PMCPMC3005012
OpenAlexW1982075247

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.