Evidence map›Paper›PMID 28622417›Full record

ArticleBritish journal of pharmacology2017

The anti-migraine component of butterbur extracts, isopetasin, desensitizes peptidergic nociceptors by acting on TRPA1 cation channel.

Silvia Benemei, Francesco De Logu, Simone Li Puma, Ilaria Maddalena Marone, Elisabetta Coppi, Filippo Ugolini, Wolfgang Liedtke, Federica Pollastro, Giovanni Appendino, Pierangelo Geppetti and 2 more

Open access · greenAbstract read
In one paragraph

Article in British journal of pharmacology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
4.1field-weighted citation impact, top 5% 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

38 citing papers in PubMed, 76 citations in OpenAlex.

  1. Sesquiterpene Lactone Derivatives ofPharmaceuticals (Basel, Switzerland) · 2026
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  19. The Role of TRPA1 in Skin Physiology and Pathology.International journal of molecular sciences · 2021
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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

12 authors at 3 institutions in 2 countries.

Silvia BenemeiDepartment of Health Sciences, Section of Clinical Pharmacology and Headache Center, University of Florence, Florence, Italy.
Francesco De LoguDepartment of Health Sciences, Section of Clinical Pharmacology and Headache Center, University of Florence, Florence, Italy.
Simone Li PumaDepartment of Health Sciences, Section of Clinical Pharmacology and Headache Center, University of Florence, Florence, Italy.
Ilaria Maddalena MaroneDepartment of Health Sciences, Section of Clinical Pharmacology and Headache Center, University of Florence, Florence, Italy.
Elisabetta CoppiDepartment of Health Sciences, Section of Clinical Pharmacology and Headache Center, University of Florence, Florence, Italy.
Filippo UgoliniDepartment of Health Sciences, Section of Clinical Pharmacology and Headache Center, University of Florence, Florence, Italy.
Wolfgang LiedtkeDepartments of Neurology, Anesthesiology and Neurobiology, Clinics for Headache, Head-Pain and Trigeminal Sensory Disorders, Duke University, Durham, NC, USA.
Federica PollastroDepartment of Pharmaceutical Sciences, University of Eastern Piedmont, Novara, Italy.
Giovanni AppendinoDepartment of Pharmaceutical Sciences, University of Eastern Piedmont, Novara, Italy.
Pierangelo GeppettiDepartment of Health Sciences, Section of Clinical Pharmacology and Headache Center, University of Florence, Florence, Italy.ORCID http://orcid.org/0000-0003-3797-8371
Serena MaterazziDepartment of Health Sciences, Section of Clinical Pharmacology and Headache Center, University of Florence, Florence, Italy.
Romina NassiniDepartment of Health Sciences, Section of Clinical Pharmacology and Headache Center, University of Florence, Florence, Italy.
University of Florence · ITUniversità degli Studi del Piemonte Orientale “Amedeo Avogadro” · ITDuke University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeThe mechanism of the anti-migraine action of extracts of butterbur [Petasites hybridus (L.) Gaertn.] is unknown. Here, we investigated the ability of isopetasin, a major constituent of these extracts, to specifically target TRPA1 channel and to affect functional responses relevant to migraine. EXPERIMENTAL APPROACH: Single-cell calcium imaging and patch-clamp recordings in human and rodent TRPA1-expressing cells, neurogenic motor responses in rodent isolated urinary bladder, release of CGRP from mouse spinal cord in vitro and facial rubbing in mice and meningeal blood flow in rats were examined. KEY

resultsIsopetasin induced (i) calcium responses and currents in rat/mouse trigeminal ganglion (TG) neurons and in cells expressing the human TRPA1, (ii) substance P-mediated contractions of rat isolated urinary bladders and (iii) CGRP release from mouse dorsal spinal cord, responses that were selectively abolished by genetic deletion or pharmacological antagonism of TRPA1 channels. Pre-exposure to isopetasin produced marked desensitization of allyl isothiocyanate (AITC, TRPA1 channel agonist)- or capsaicin (TRPV1 channel agonist)-evoked currents in rat TG neurons, contractions of rat or mouse bladder and CGRP release from mouse central terminals of primary sensory neurons. Repeated intragastric administration of isopetasin attenuated mouse facial rubbing, evoked by local AITC or capsaicin, and dilation of rat meningeal arteries by acrolein or ethanol (TRPA1 and TRPV1 channel agonists respectively). CONCLUSION AND IMPLICATIONS: Activation of TRPA1 channels by isopetasin results in excitation of neuropeptide-containing nociceptors, followed by marked heterologous neuronal desensitization. Such atten uation in pain and neurogenic inflammation may account for the anti-migraine action of butterbur.

Indexed as

PetasitesAnimalsCells, CulturedHEK293 CellsHumansMaleMice, Inbred C57BLMice, KnockoutMigraine DisordersNociceptorsPlant ExtractsRats, Sprague-DawleySensory Receptor CellsSesquiterpenesSpinal CordTRPA1 Cation ChannelisopetasinPlant ExtractsSesquiterpenesTRPA1 Cation Channel

Identifiers

PMID28622417
PMCPMC5554318
OpenAlexW2626091793

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.