Evidence map›Paper›PMID 24273211›Full record

ArticleMolecular nutrition & food research2014

GABA(A) receptor modulation by terpenoids from Sideritis extracts.

Artur Kessler, Hilal Sahin-Nadeem, Sarah C R Lummis, Ingrid Weigel, Monika Pischetsrieder, Andrea Buettner, Carmen Villmann

Open access · hybridAbstract read
In one paragraph

Article in Molecular nutrition & food research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed, 2 pooled it
7.4field-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

41 citing papers in PubMed, 2 syntheses or guidelines pooled it, 90 citations in OpenAlex.

  1. Pooled it
  2. Cys-loop receptors on cannabinoids: All high?Frontiers in physiology · 2022
    Pooled it
  3. Trial
  4. Review
  5. Article
  6. Essential Oils: Chemistry and Mechanisms of Anticonvulsant Action.International journal of molecular sciences · 2026
    Review
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. A new herbal anesthetic agent for common carp (Frontiers in veterinary science · 2024
    Article
  14. Secondary Terpenes inBiomedicines · 2022
    Review
  15. Review
  16. Aromas Influencing the GABAergic System.Molecules (Basel, Switzerland) · 2022
    Review
  17. Review
  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

7 authors at 5 institutions in 3 countries.

Artur KesslerDepartment of Chemistry and Pharmacy, Food Chemistry Division, University of Erlangen-Nuernberg, Erlangen, Germany.
Hilal Sahin-Nadeem
Sarah C R Lummis
Ingrid Weigel
Monika Pischetsrieder
Andrea Buettner
Carmen Villmann
Friedrich-Alexander-Universität Erlangen-Nürnberg · DEAkdeniz University · TRFraunhofer Institute for Process Engineering and Packaging · DEUniversity of Cambridge · GBUniversity of Würzburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

scopeGABAA receptors are modulated by Sideritis extracts. The aim of this study was to identify single substances from Sideritis extracts responsible for GABAA receptor modulation. METHODS AND

resultsSingle volatile substances identified by GC have been tested in two expression systems, Xenopus oocytes and human embryonic kidney cells. Some of these substances, especially carvacrol, were highly potent on GABAA receptors composed of α1β2 and α1β2γ2 subunits. All effects measured were independent from the presence of the γ2 subunit. As Sideritis extracts contain a high amount of terpenes, 13 terpenes with similar structure elements were tested in the same way. Following a prescreening on α1β2 GABAA receptors, a high-throughput method was used for identification of the most effective terpenoid substances on GABA-affinity of α1β2γ2 receptors expressed in transfected cell lines. Isopulegol, pinocarveol, verbenol, and myrtenol were the most potent modifiers of GABAA receptor function.

conclusionComparing the chemical structures, the action of terpenes on GABAA receptors is most probably due to the presence of hydroxyl groups and a bicyclic character of the substances tested. We propose an allosteric modulation independent from the γ2 subunit and similar to the action of alcohols and anesthetics.

Indexed as

AnimalsDrug Evaluation, PreclinicalFemaleHEK293 CellsHigh-Throughput Screening AssaysHumansOocytesPlant ExtractsReceptors, GABA-ASideritisStructure-Activity RelationshipTerpenesXenopus laevisPlant ExtractsReceptors, GABA-ATerpenesGABAA receptorPatch clamp recordingsTerpeneTwo-electrode voltage clamp recordingsVolatile odorants

Identifiers

PMID24273211
PMCPMC4384808
OpenAlexW1983822816

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.