Evidence map›Paper›PMID 22579614›Full record

ArticleNeuropharmacology2012

Role for α6 nicotinic receptors in l-dopa-induced dyskinesias in parkinsonian mice.

Maryka Quik, Keon Min Park, Maya Hrachova, Archana Mallela, Luping Z Huang, J Michael McIntosh, Sharon R Grady

Abstract read
In one paragraph

Article in Neuropharmacology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
2.4field-weighted citation impact, top 11% 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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 37 citations in OpenAlex.

  1. Effect of nicotine on L-dopa-induced dyskinesia in animal models of Parkinson's disease: a systematic review and meta-analysis.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2014
    Pooled it
  2. Review
  3. Review
  4. Nicotinic Acetylcholine Receptors of PC12 Cells.Cellular and molecular neurobiology · 2021
    Review
  5. Article
  6. Review
  7. Potential Therapeutic Application for Nicotinic Receptor Drugs in Movement Disorders.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2019
    Review
  8. Article
  9. The striatal cholinergic system in L-dopa-induced dyskinesias.Journal of neural transmission (Vienna, Austria : 1996) · 2018
    Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. Review
  15. Article
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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 3 institutions in 1 country.

Maryka QuikCenter for Health Sciences, SRI International, 333 Ravenswood Ave, Menlo Park, CA 94025, USA. maryka.quik@sri.com
Keon Min Park
Maya Hrachova
Archana Mallela
Luping Z Huang
J Michael McIntosh
Sharon R Grady
SRI International · USUniversity of Colorado Boulder · USUniversity of Utah · US

Funding

Studies with Nicotinic Null Mutant MiceP30DA015663 · NIDA · UNIVERSITY OF COLORADO AT BOULDER · PI MARKS, MICHAEL J · 2003 to 2013
$4.5M
Mechanisms of nicotine-mediated decrease in L-dopa induced-dyskinesiasR01NS059910 · NINDS · SRI INTERNATIONAL · PI QUIK, MARYKA · 2009 to 2013
$3.7M
Nicotinic receptors as molecular targets to reduce L-dopa-induced dyskinesias inR21NS065851 · NINDS · SRI INTERNATIONAL · PI QUIK, MARYKA · 2010 to 2011
$485k
NIDA NIH HHS DA015663NIDA NIH HHS P30 DA015663NINDS NIH HHS NS59910NINDS NIH HHS NS65851NINDS NIH HHS R01 NS059910NINDS NIH HHS R21 NS065851
6 · The paper itself

Abstract

L-Dopa-induced dyskinesias are a serious side effect that develops in most Parkinson's disease patients on dopamine replacement therapy. Few treatment options are available to manage dyskinesias; however,recent studies show that nicotine reduces these abnormal involuntary movements (AIMs) in parkinsonian animals by acting at nicotinic acetylcholine receptors (nAChRs). Identification of the nAChR subtypes that mediate this reduction in AIMs is important as it will help in the development of nAChR subtype selective drugs for their treatment. Here we investigate the role of α6β2* nAChRs, a subtype selectively present in the nigrostriatal pathway, using a6 nAChR subunit null mutant (α6⁻/⁻) mice.Wildtype and α6⁻/⁻ mice were lesioned by unilateral injection of 6-hydroxydopamine (3 mg/ml) into the medial forebrain bundle. They were then given L-dopa (3 mg/kg) plus benserazide (15 mg/kg) 2e3 wk later. L-dopa-induced AIMs developed to a similar extent in α6⁻/⁻ and wildtype mice.However, AIMs in α6⁻/⁻ mice declined to ~50% of that in wildtype mice with continued L-dopa treatment. Nicotine treatment also decreased AIMs by ~50% in wildtype mice, although not in α6⁻/⁻ mice. There were no effects on parkinsonism under any experimental condition. To conclude, the similar declines in L-dopa-induced AIMs in nicotine-treated wildtype mice and in α6⁻/⁻ mice treated with and without nicotine indicate an essential role for α6β2* nAChRs in the maintenance of L-dopa-induced AIMs.These findings suggest that α6β2* nAChR drugs have potential for reducing L-dopa-induced dyskinesias in Parkinson's disease.

Indexed as

AnimalsAntiparkinson AgentsAutoradiographyBenserazideCotinineDopamineDopamine AgentsDopamine Plasma Membrane Transport ProteinsDyskinesia, Drug-InducedHydroxydopaminesLevodopaMiceMice, Inbred C57BLMice, KnockoutNicotineNicotinic Agonistsalpha6beta2 nicotinic acetylcholine receptorAntiparkinson AgentsBenserazideCotinineDopamineDopamine AgentsDopamine Plasma Membrane Transport ProteinsHydroxydopaminesLevodopaNicotineNicotinic Agonistsnicotinic receptor alpha6Receptors, Nicotinic

Identifiers

PMID22579614
PMCPMC3726309
OpenAlexW2035959989

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.