Evidence map›Paper›PMID 21218475›Full record

ArticleJournal of the science of food and agriculture2011

Bioactive xanthones from the roots of Hypericum perforatum (common St John's wort).

Sara L Crockett, Birgit Poller, Nurhayat Tabanca, Eva-Maria Pferschy-Wenzig, Olaf Kunert, David E Wedge, Franz Bucar

Abstract read
In one paragraph

Article in Journal of the science of food and agriculture, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
2.5field-weighted citation impact, top 10% 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

11 citing papers in PubMed, 59 citations in OpenAlex.

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  6. Extracts FromFrontiers in pharmacology · 2018
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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

7 authors at 2 institutions in 2 countries.

Sara L CrockettInstitute of Pharmaceutical Sciences, Department of Pharmacognosy, Karl-Franzens-University, 8010 Graz, Austria. sara.crockett@uni-graz.at
Birgit Poller
Nurhayat Tabanca
Eva-Maria Pferschy-Wenzig
Olaf Kunert
David E Wedge
Franz Bucar
University of Graz · ATUniversity of Mississippi · US

Funding

Austrian Science Fund FWF T 345
6 · The paper itself

Abstract

backgroundExtracts of Hypericum perforatum L. (common St John's wort; Hypericaceae) are sold as phytopharmaceuticals and herbal supplements to treat mild to moderate depression and as food additives. Extensively cultivated in Europe, plants can be infected by anthracnose (Colletotrichum gloeosporioides), a virulent fungal pathogen that causes tissue necrosis and dramatically decreases crop value. Such infections triggered the production of new secondary metabolites, specifically xanthones, in cell culture experiments.

resultsBioassay-guided fractionation of H. perforatum root extracts, testing for growth inhibition of plant pathogenic fungi from the genera Colletotrichum, Botrytis, Fusarium and Phomopsis, was performed. In vitro anti-inflammatory activity through inhibition of COX-1, COX-2 and 5-LOX-catalyzed LTB(4) formation was also evaluated. Extracts were analyzed by various chromatographic means and structure elucidation was performed using data from nuclear magnetic resonance and mass spectrometry.

conclusionResearchers have previously described constituents from the aerial parts of this species, but few reports describe secondary metabolites found in underground parts, of particular interest because the lower stem and upper root are often sites of fungal infection. This work resulted in the isolation of three xanthones: 1,6-dihydroxy-5-methoxy-4',5'-dihydro-4',4',5'-trimethylfurano-(2',3':3,4)-xanthone; 4,6-dihydroxy-2,3-dimethoxyxanthone; and cis-kielcorin, one of which possessed novel bioactivity against species of Phomopsis and inhibited 5-LOX-mediated LTB(4) formation.

Indexed as

Antifungal AgentsAnti-Inflammatory AgentsCyclooxygenase 1Cyclooxygenase 2FungiHypericumLeukotriene B4LipoxygenasePlant DiseasesPlant ExtractsPlant RootsXanthonesAntifungal AgentsAnti-Inflammatory AgentsCyclooxygenase 1Cyclooxygenase 2Leukotriene B4LipoxygenasePlant ExtractsXanthones

Identifiers

PMID21218475
PMCPMC3318991
OpenAlexW2158202761

What OpenQuestion holds

Textmetadata
LicenceTDM
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.