Evidence map›Paper›PMID 22363677›Full record

ArticlePloS one2012

Role of histone acetylation in the stimulatory effect of valproic acid on vascular endothelial tissue-type plasminogen activator expression.

Pia Larsson, Erik Ulfhammer, Mia Magnusson, Niklas Bergh, Sebastian Lunke, Assam El-Osta, Robert L Medcalf, Per-Arne Svensson, Lena Karlsson, Sverker Jern

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
2.0field-weighted citation impact, top 14% 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

31 citing papers in PubMed, 53 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Review
  6. Review
  7. Review
  8. Article
  9. Review
  10. Review
  11. Article
  12. Article
  13. The Role of Histone Protein Acetylation in Regulating Endothelial Function.Frontiers in cell and developmental biology · 2021
    Review
  14. Review
  15. Review
  16. Review
  17. Dual mechanisms for the regulation of brain-derived neurotrophic factor by valproic acid in neural progenitor cells.The Korean journal of physiology & pharmacology : official journal of the Korean Physiological Society and the Korean Society of Pharmacology · 2018
    Article
  18. Article
  19. Article
  20. Article
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

10 authors at 3 institutions in 2 countries.

Pia LarssonThe Wallenberg Laboratory for Cardiovascular Research, Institute of Medicine, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Erik Ulfhammer
Mia Magnusson
Niklas Bergh
Sebastian Lunke
Assam El-Osta
Robert L Medcalf
Per-Arne Svensson
Lena Karlsson
Sverker Jern
University of Gothenburg · SEBaker Heart and Diabetes Institute · AUMonash University · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimsStimulated release of tissue-type plasminogen activator (t-PA) is pivotal for an intravascular fibrinolytic response and protects the circulation from occluding thrombosis. Hence, an impaired t-PA production is associated with increased risk for atherothrombotic events. A pharmacological means to stimulate the production of this enzyme may thus be desirable. We investigated if the anti-epileptic drug valproic acid (VPA) is capable of enhancing t-PA expression in vitro in vascular endothelial cells, and further examined if its histone deacetylase (HDAC)-inhibitory activity is of importance for regulating t-PA expression. METHODS AND

resultsHuman endothelial cells were exposed to valproic acid and t-PA mRNA and protein levels were quantified. Potential changes in histone acetylation status globally and at the t-PA promoter were examined by western blot and chromatin immunoprecipitation. Valproic acid dose-dependently stimulated t-PA mRNA and protein expression in endothelial cells reaching a 2-4-fold increase at clinically relevant concentrations and 10-fold increase at maximal concentrations. Transcription profiling analysis revealed that t-PA is selectively targeted by this agent. Augmented histone acetylation was detected at the t-PA transcription start site, and an attenuated VPA-response was observed with siRNA knock of HDAC3, HDAC5 and HDAC7.

conclusionsValproic acid induces t-PA expression in cultured endothelial cells, and this is associated with increased histone acetylation at the t-PA promoter. Given the apparent potency of valproic acid in stimulating t-PA expression in vitro this substance may be a candidate for pharmacological modulation of endogenous fibrinolysis in man.

Indexed as

AcetylationChromatin ImmunoprecipitationCoronary VesselsEndothelium, VascularGene Expression RegulationGene Knockdown TechniquesHemostasisHistone Deacetylase InhibitorsHistone DeacetylasesHistonesHumansHuman Umbilical Vein Endothelial CellsPromoter Regions, GeneticRNA, MessengerRNA, Small InterferingTissue Plasminogen ActivatorHistone Deacetylase InhibitorsHistone DeacetylasesHistonesRNA, MessengerRNA, Small InterferingTissue Plasminogen ActivatorValproic Acid

Identifiers

PMID22363677
PMCPMC3282745
OpenAlexW2063970242

What OpenQuestion holds

Textmetadata
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.