Evidence map›Paper›PMID 21652627›Full record

ArticleJournal of cell science2011

Identifying an uptake mechanism for the antiepileptic and bipolar disorder treatment valproic acid using the simple biomedical model Dictyostelium.

Nicole Terbach, Rishita Shah, Rachel Kelemen, Peter S Klein, Dmitri Gordienko, Nigel A Brown, Christopher J Wilkinson, Robin S B Williams

Open access · bronzeAbstract read
In one paragraph

Article in Journal of cell science, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
7.0field-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

24 citing papers in PubMed, 43 citations in OpenAlex.

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  15. Valproate-induced neurodevelopmental deficits in Xenopus laevis tadpoles.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2015
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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 3 institutions in 2 countries.

Nicole TerbachCentre for Biomedical Sciences, School of Biological Sciences, Royal Holloway University of London, Egham TW200EX, UK.
Rishita Shah
Rachel Kelemen
Peter S Klein
Dmitri Gordienko
Nigel A Brown
Christopher J Wilkinson
Robin S B Williams
Royal Holloway University of London · GBUniversity of Pennsylvania · USSt George's, University of London · GB

Funding

Training Program in Cancer PharmacologyR25CA101871 · NCI · UNIVERSITY OF PENNSYLVANIA · PI BLAIR, IAN ALEXANDER · 2003 to 2013
$4.3M
MOLECULAR MECHANISM FOR LITHIUM ACTIONR01MH058324 · NIMH · UNIVERSITY OF PENNSYLVANIA · PI KLEIN, PETER S · 1998 to 2010
$2.8M
Early activation of the zygotic genomeR01GM076621 · NIGMS · UNIVERSITY OF PENNSYLVANIA · PI KLEIN, PETER S · 2006 to 2009
$1.2M
National Centre for the Replacement, Refinement and Reduction of Animals in Research G0900775/1NCI NIH HHS 5R25CA101871-07NCI NIH HHS R25 CA101871NIGMS NIH HHS GM076621NIGMS NIH HHS R01 GM076621NIMH NIH HHS MH58324NIMH NIH HHS R01 MH058324Wellcome Trust 082640
6 · The paper itself

Abstract

Valproic acid (VPA) is the most highly prescribed epilepsy treatment worldwide and is also used to prevent bipolar disorder and migraine. Surprisingly, very little is known about its mechanisms of cellular uptake. Here, we employ a range of cellular, molecular and genetic approaches to characterize VPA uptake using a simple biomedical model, Dictyostelium discoideum. We show that VPA is taken up against an electrochemical gradient in a dose-dependent manner. Transport is protein-mediated, dependent on pH and the proton gradient and shows strong substrate structure specificity. Using a genetic screen, we identified a protein homologous to a mammalian solute carrier family 4 (SLC4) bicarbonate transporter that we show is involved in VPA uptake. Pharmacological and genetic ablation of this protein reduces the uptake of VPA and partially protects against VPA-dependent developmental effects, and extracellular bicarbonate competes for VPA uptake in Dictyostelium. We further show that this uptake mechanism is likely to be conserved in both zebrafish (Danio rerio) and Xenopus laevis model systems. These results implicate, for the first time, an uptake mechanism for VPA through SLC4-catalysed activity.

Indexed as

AnimalsBiological Transport, ActiveCells, CulturedDictyosteliumHydrogen-Ion ConcentrationMembrane Transport ProteinsSubstrate SpecificityValproic AcidXenopus laevisZebrafishMembrane Transport ProteinsValproic Acid

Identifiers

PMID21652627
PMCPMC3113673
OpenAlexW2120814831

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.