Evidence map›Paper›PMID 26168917›Full record

ArticleBMC complementary and alternative medicine2015

Valerenic acid and Valeriana officinalis extracts delay onset of Pentylenetetrazole (PTZ)-Induced seizures in adult Danio rerio (Zebrafish).

Bianca A Torres-Hernández, Lisa M Del Valle-Mojica, José G Ortíz

Open access · goldAbstract read
In one paragraph

Article in BMC complementary and alternative medicine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
11.4field-weighted citation impact, top 2% 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

21 citing papers in PubMed, 66 citations in OpenAlex.

  1. Article
  2. Review
  3. Investigation of Anticonvulsant Potential ofInternational journal of molecular sciences · 2025
    Article
  4. Review
  5. Article
  6. Article
  7. Treating Epilepsy with Natural Products: Nonsense or Possibility?Pharmaceuticals (Basel, Switzerland) · 2023
    Review
  8. Article
  9. Review
  10. Review
  11. Review
  12. Article
  13. Article
  14. Anti-Inflammation Associated Protective Mechanism of Berberine and its Derivatives on Attenuating Pentylenetetrazole-Induced Seizures in Zebrafish.Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2020
    Article
  15. Frontiers in neuroscience · 2020
    Article
  16. Article
  17. Article
  18. Article
  19. 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

3 authors at 1 institution in 1 country.

Bianca A Torres-HernándezNeuropharmacology Laboratory, Pharmacology and Toxicology, Department University of Puerto Rico- Medical Science Campus, PO Box 365067, San Juan, 00936-5067, Puerto Rico. bianca.torreshernandez12@gmail.com.
Lisa M Del Valle-MojicaNeuropharmacology Laboratory, Pharmacology and Toxicology, Department University of Puerto Rico- Medical Science Campus, PO Box 365067, San Juan, 00936-5067, Puerto Rico. lisamdelvalle@yahoo.com.
José G OrtízNeuropharmacology Laboratory, Pharmacology and Toxicology, Department University of Puerto Rico- Medical Science Campus, PO Box 365067, San Juan, 00936-5067, Puerto Rico. jg_ortiz@yahoo.com.
University of Puerto Rico System · PR

Funding

RISE Option III: MBRS RISE at the UPR Medical Sciences CampusR25GM061838 · NIGMS · UNIVERSITY OF PUERTO RICO MED SCIENCES · PI CADILLA, CARMEN LYDIA · 2000 to 2021
$25.5M
TRANSLATIONAL PROTEOMICS CENTERG12MD007600 · NIMHD · UNIVERSITY OF PUERTO RICO MED SCIENCES · PI FERNANDEZ-REPOLLET, EMMA · 2012 to 2016
$11.0M
NIGMS NIH HHS 2 R25 GM061838NIGMS NIH HHS R25 GM061838NIMHD NIH HHS G12 MD007600
6 · The paper itself

Abstract

backgroundAnticonvulsant properties have been attributed to extracts of the herbal medicine Valeriana officinalis. Our aims were to examine the anticonvulsant properties of valerenic acid and valerian extracts and to determine whether valerian preparations interact with the activity of other anti-epileptic drugs (phenytoin or clonazepam). To achieve these goals, we validated the adult zebrafish, Danio rerio, as an animal model for studying anticonvulsant drugs.

methodsAll drug treatments were administered by immersion in water containing the drug. For assays of anticonvulsant activity, zebrafish were pretreated with: anti-epileptic drugs, valerenic acid, aqueous or ethanolic valerian extracts, or mixtures (phenytoin or clonazepam with valerenic acid or valerian extracts). Seizures were then induced with pentylenetetrazole (PTZ). A behavioral scale was developed for scoring PTZ-induced seizures in adult zebrafish. The seizure latency was evaluated for all pretreatments and control, untreated fish. Valerenic acid and both aqueous and ethanolic extracts of valerian root were also evaluated for their ability to improve survival after pentylenetetrazole-challenge. The assay was validated by comparison with well-studied anticonvulsant drugs (phenytoin, clonazepam, gabapentin and valproate). One-way ANOVA followed by Tukey post-hoc test was performed, using a p < 0.05 level of significance. All treatments were compared with the untreated animals and with the other pretreatments.

resultsAfter exposure to pentylenetetrazole, zebrafish exhibited a series of stereotypical behaviors prior to the appearance of clonic-like movements--convulsions. Both valerenic acid and valerian extracts (aqueous and ethanolic) significantly extended the latency period to the onset of seizure (convulsion) in adult zebrafish. The ethanolic valerian extract was a more potent anticonvulsant than the aqueous extract. Valerenic acid and both valerian extracts interacted synergistically with clonazepam to extended the latency period to the onset of seizure. Phenytoin showed interaction only with the ethanolic valerian extracts.

conclusionsValerenic acid and valerian extracts have anticonvulsant properties in adult zebrafish. Valerian extracts markedly enhanced the anticonvulsant effect of both clonazepam and phenytoin, and could contribute to therapy of epileptic patients.

Indexed as

SeizuresAnimalsAnticonvulsantsBehavior, AnimalIndenesPentylenetetrazolePlant ExtractsSesquiterpenesValerianZebrafishAnticonvulsantsIndenesPentylenetetrazolePlant ExtractsSesquiterpenesvalerenic acid

Identifiers

PMID26168917
PMCPMC4501072
OpenAlexW1527842181

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.