Evidence map›Paper›PMID 36333822›Full record

ArticleParasites & vectors2022

Comparative analysis of the anthelmintic efficacy of European heather extracts on Teladorsagia circumcincta and Trichostrongylus colubriformis egg hatching and larval motility.

Francesca Shepherd, Caroline Chylinski, Michael R Hutchings, Joana Lima, Ross Davidson, Robert Kelly, Alastair Macrae, Juha-Pekka Salminen, Marica T Engström, Veronika Maurer and 5 more

Open access · goldAbstract read
In one paragraph

Article in Parasites & vectors, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.8field-weighted citation impact, top 16% 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

7 citing papers in PubMed, 8 citations in OpenAlex.

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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

15 authors at 7 institutions in 6 countries.

Francesca ShepherdScotland's Rural College (SRUC), Easter Bush Campus, Midlothian, UK.
Caroline ChylinskiScotland's Rural College (SRUC), Easter Bush Campus, Midlothian, UK.
Michael R HutchingsScotland's Rural College (SRUC), Easter Bush Campus, Midlothian, UK.
Joana LimaScotland's Rural College (SRUC), Easter Bush Campus, Midlothian, UK.
Ross DavidsonScotland's Rural College (SRUC), Easter Bush Campus, Midlothian, UK.
Robert KellyRoyal (Dick) School of Veterinary Studies [R(D)SVS]-the Roslin Institute, University of Edinburgh, Easter Bush Campus, Midlothian, UK.
Alastair MacraeRoyal (Dick) School of Veterinary Studies [R(D)SVS]-the Roslin Institute, University of Edinburgh, Easter Bush Campus, Midlothian, UK.
Juha-Pekka SalminenDepartment of Chemistry, University of Turku, Turku, Finland.
Marica T EngströmDepartment of Chemistry, University of Turku, Turku, Finland.
Veronika MaurerResearch Institute of Organic Agriculture (FiBL), Frick, Switzerland.
Håvard SteinshamnNorwegian Institute of Bioeconomy Research (NIBIO), Tingvoll, Norway.
Susanne FittjeNaturland Association for Organic Agriculture, Gräfelfing, Germany.
Angela Morell PerezAsociación Valor Ecologico (ECOVALIA), CAAE Association, Seville, Spain.
Rocío Rosa GarcíaAgrifood Research and Development Regional Service (SERIDA), Villaviciosa, Asturias, Spain.
Spiridoula AthanasiadouScotland's Rural College (SRUC), Easter Bush Campus, Midlothian, UK. spiridoula.athanasiadou@sruc.ac.uk.
Scotland's Rural College · GBRoslin Institute · GBUniversity of Turku · FIForschungsinstitut für Biologischen Landbau · CHNaturland · DENorwegian Institute of Bioeconomy Research · NOServicio Regional de Investigación y Desarrollo Agroalimentario · ES

Funding

European Commission 773431
6 · The paper itself

Abstract

backgroundGastrointestinal nematode (GIN) control is traditionally achieved with the use of anthelmintic drugs, however due to regulations in organic farming and the rise in anthelmintic resistance, alternatives are sought after. A promising alternative is the use of bioactive plant feeding due to the presence of plant secondary metabolites (PSMs) such as proanthocyanidins (PAs). This study focussed on the perennial shrub heather (Ericaceae family), a plant rich in PAs, highly abundant across Europe and with previously demonstrated anthelmintic potential.

methodsIn vitro assays were used to investigate heather's anthelmintic efficacy against egg hatching and larval motility. Heather samples were collected from five European countries across two seasons, and extracts were tested against two GIN species: Teladorsagia circumcincta and Trichostrongylus colubriformis. Polyphenol group-specific ultraperformance liquid chromatography-tandem mass spectrometry analysis was performed to identify relevant polyphenol subgroups present, including the PA concentration and size and ratio of the subunits. Partial least squares analysis was performed to associate efficacy with variation in PSM composition.

resultsHeather extracts reduced egg hatching of both GIN species in a dose-dependent manner by up to 100%, while three extracts at the highest concentration (10 mg/ml) reduced larval motility to levels that were not significantly different from dead larvae controls. PAs, particularly the procyanidin type, and flavonol derivatives were associated with anthelmintic activity, and the particular subgroup of polyphenols associated with the efficacy was dependent on the GIN species and life stage.

conclusionsOur results provide in vitro evidence that heather, a widely available plant often managed as a weed in grazing systems, has anthelmintic properties attributed to various groups of PSMs and could contribute to sustainable GIN control in ruminant production systems across Europe.

Indexed as

AnthelminticsEricaceaeNematodaSheep DiseasesAnimalsFecesLarvaOstertagiaPlant ExtractsPolyphenolsSheepTrichostrongylusAnthelminticsPlant ExtractsPolyphenolsAnthelminticCondensed tanninsGastrointestinal nematodePlant extractsProanthocyanidinTeladorsagia circumcinctaTrichostrongylus colubriformis

Identifiers

PMID36333822
PMCPMC9636748
OpenAlexW4308450312

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.