Evidence map›Paper›PMID 26505994›Full record

ArticlePloS one2015

Limited Effect of Chronic Valproic Acid Treatment in a Mouse Model of Machado-Joseph Disease.

Sofia Esteves, Sara Duarte-Silva, Luana Naia, Andreia Neves-Carvalho, Andreia Teixeira-Castro, Ana Cristina Rego, Anabela Silva-Fernandes, Patrícia Maciel

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 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
2.5field-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

16 citing papers in PubMed, 26 citations in OpenAlex.

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  13. From Pathogenesis to Novel Therapeutics for Spinocerebellar Ataxia Type 3: Evading Potholes on the Way to Translation.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2019
    Review
  14. Genetics, Mechanisms, and Therapeutic Progress in Polyglutamine Spinocerebellar Ataxias.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2019
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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

8 authors at 2 institutions in 1 country.

Sofia EstevesLife and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, 4710-057 Braga, Portugal; ICVS/3Bs-PT Government Associate Laboratory, Braga/Guimarães, Portugal.
Sara Duarte-SilvaLife and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, 4710-057 Braga, Portugal; ICVS/3Bs-PT Government Associate Laboratory, Braga/Guimarães, Portugal.
Luana NaiaCNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal; Faculty of Medicine, University of Coimbra, Coimbra, Portugal.
Andreia Neves-CarvalhoLife and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, 4710-057 Braga, Portugal; ICVS/3Bs-PT Government Associate Laboratory, Braga/Guimarães, Portugal.
Andreia Teixeira-CastroLife and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, 4710-057 Braga, Portugal; ICVS/3Bs-PT Government Associate Laboratory, Braga/Guimarães, Portugal.
Ana Cristina RegoCNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal; Faculty of Medicine, University of Coimbra, Coimbra, Portugal.
Anabela Silva-FernandesLife and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, 4710-057 Braga, Portugal; ICVS/3Bs-PT Government Associate Laboratory, Braga/Guimarães, Portugal.
Patrícia MacielLife and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, 4710-057 Braga, Portugal; ICVS/3Bs-PT Government Associate Laboratory, Braga/Guimarães, Portugal.
University of Minho · PTUniversity of Coimbra · PT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Machado-Joseph disease (MJD) is an inherited neurodegenerative disease, caused by a CAG repeat expansion within the coding region of ATXN3 gene, and which currently lacks effective treatment. In this work we tested the therapeutic efficacy of chronic treatment with valproic acid (VPA) (200mg/kg), a compound with known neuroprotection activity, and previously shown to be effective in cell, fly and nematode models of MJD. We show that chronic VPA treatment in the CMVMJD135 mouse model had limited effects in the motor deficits of these mice, seen mostly at late stages in the motor swimming, beam walk, rotarod and spontaneous locomotor activity tests, and did not modify the ATXN3 inclusion load and astrogliosis in affected brain regions. However, VPA chronic treatment was able to increase GRP78 protein levels at 30 weeks of age, one of its known neuroprotective effects, confirming target engagement. In spite of limited results, the use of another dosage of VPA or of VPA in a combined therapy with molecules targeting other pathways, cannot be excluded as potential strategies for MJD therapeutics.

Indexed as

AnimalsAstrocytesAtaxin-3BrainDisease Models, AnimalEndoplasmic Reticulum Chaperone BiPHeat-Shock ProteinsHumansMachado-Joseph DiseaseMiceMutationTrinucleotide Repeat ExpansionValproic AcidAtaxin-3Endoplasmic Reticulum Chaperone BiPHeat-Shock ProteinsHSPA5 protein, humanHspa5 protein, mouseValproic Acid

Identifiers

PMID26505994
PMCPMC4624233
OpenAlexW1885640155

What OpenQuestion holds

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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.