Evidence map›Paper›PMID 22539851›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2012

Gα(olf) mutation allows parsing the role of cAMP-dependent and extracellular signal-regulated kinase-dependent signaling in L-3,4-dihydroxyphenylalanine-induced dyskinesia.

Cristina Alcacer, Emanuela Santini, Emmanuel Valjent, Florence Gaven, Jean-Antoine Girault, Denis Hervé

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed, 2 pooled it
5.5field-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

49 citing papers in PubMed, 2 syntheses or guidelines pooled it, 87 citations in OpenAlex.

  1. Pooled it
  2. The Signaling and Pharmacology of the Dopamine D1 Receptor.Frontiers in cellular neuroscience · 2021
    Pooled it
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  8. DYT-Frontiers in neuroscience · 2023
    Review
  9. Article
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  11. Selective Manipulation of G-Protein γThe Journal of neuroscience : the official journal of the Society for Neuroscience · 2021
    Article
  12. Review
  13. Article
  14. Subregion-Specific Regulation of Dopamine D1 Receptor Signaling in the Striatum: Implication for L-DOPA-Induced Dyskinesia.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2021
    Article
  15. 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

6 authors at 3 institutions in 2 countries.

Cristina AlcacerInserm UMR-S 839, F-75005 Paris, France.
Emanuela Santini
Emmanuel Valjent
Florence Gaven
Jean-Antoine Girault
Denis Hervé
Institut du Fer à Moulin · FRCenter for Neuro-Oncology · USInserm · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Although L-3,4-dihydroxyphenylalanine (L-DOPA) remains the reference treatment of Parkinson's disease, its long-term beneficial effects are hindered by L-DOPA-induced dyskinesia (LID). In the dopamine (DA)-denervated striatum, L-DOPA activates DA D₁ receptor(D₁R) signaling, including cAMP-dependent protein kinase A (PKA) and extracellular signal-regulated kinase (ERK), two responses associated with LID. However, the cause of PKA and ERK activation, their respective contribution to LID, and their relationship are not known. In striatal neurons, D₁R activates adenylyl-cyclase through Gα(olf), a protein upregulated after lesion of DA neurons in rats and inpatients. We report here that increased Gα(olf) levels in hemiparkinsonian mice are correlated with LID after chronic L-DOPA treatment. To determine the role of this upregulation, we performed unilateral lesion in mice lacking one allele of the Gnal gene coding for Gα(olf) (Gnal⁺/⁻). Despite an increase in the lesioned striatum,Gα(olf) levels remained below those of unlesioned wild-type mice. In Gnal⁺/⁻ mice, the lesion-induced L-DOPA stimulation of cAMP/PKA-mediated phosphorylation of GluA1 Ser845 and DARPP-32 (32 kDa DA- and cAMP-regulated phosphoprotein) Thr34 was dramatically reduced, whereas ERK activation was preserved. LID occurrence was similar in Gnal⁺/⁺ and Gnal⁺/⁻ mice after a 10-d L-DOPA (20 mg/kg) treatment. Thus, in lesioned animals, Gα(olf) upregulation is critical for the activation by L-DOPA of D₁R-stimulated cAMP/PKA but not ERK signaling. Although the cAMP/PKA pathway appears to be required for LID development, our results indicate that its activation is unlikely to be the main source of LID. In contrast, the persistence of L-DOPA-induced ERK activation in Gnal⁺/⁻ mice supports its causal role in LID development.

Indexed as

Analysis of VarianceAnimalsAntiparkinson AgentsBenserazideBrainCorpus StriatumDrug InteractionsDyskinesia, Drug-InducedEnzyme InhibitorsExtracellular Signal-Regulated MAP KinasesFunctional LateralityGTP-Binding Protein alpha SubunitsHistonesLevodopaMaleMiceAntiparkinson AgentsBenserazideEnzyme InhibitorsExtracellular Signal-Regulated MAP KinasesGTP-Binding Protein alpha SubunitsHistonesLevodopaolfactory G protein subunit alpha olfOxidopamineReceptors, AMPASympatholyticsTyrosine 3-Monooxygenase

Identifiers

PMID22539851
PMCPMC6703620
OpenAlexW1984008642

What OpenQuestion holds

Textmetadata
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.