Evidence map›Paper›PMID 26295163›Full record

ArticlePloS one2015

Castanea sativa (European Chestnut) Leaf Extracts Rich in Ursene and Oleanene Derivatives Block Staphylococcus aureus Virulence and Pathogenesis without Detectable Resistance.

Cassandra L Quave, James T Lyles, Jeffery S Kavanaugh, Kate Nelson, Corey P Parlet, Heidi A Crosby, Kristopher P Heilmann, Alexander R Horswill

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 61 papers.

0numbers the graph read from it
0cells of the map it votes in
61citing papers in PubMed
3.9field-weighted citation impact, top 6% 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

61 citing papers in PubMed, 112 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Critical Assessment of the Prospects of Quorum-Quenching Therapy forInternational journal of molecular sciences · 2023
    Review
  10. Article
  11. Article
  12. Article
  13. Molecules (Basel, Switzerland) · 2022
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Castaneroxy A From the Leaves ofFrontiers in pharmacology · 2021
    Article

1 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 1 country.

Cassandra L QuaveCenter for the Study of Human Health, Emory University, Atlanta, Georgia, United States of America; Department of Dermatology, Emory University School of Medicine, Atlanta, Georgia, United States of America.
James T LylesCenter for the Study of Human Health, Emory University, Atlanta, Georgia, United States of America.
Jeffery S KavanaughDepartment of Microbiology, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, United States of America.
Kate NelsonDepartment of Dermatology, Emory University School of Medicine, Atlanta, Georgia, United States of America.
Corey P ParletDepartment of Microbiology, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, United States of America.
Heidi A CrosbyDepartment of Microbiology, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, United States of America.
Kristopher P HeilmannDepartment of Microbiology, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, United States of America.
Alexander R HorswillDepartment of Microbiology, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, United States of America.
University of Iowa · USEmory University · US

Funding

TRAINING IN MECHANISMS OF PARASITISMT32AI007511 · NIAID · UNIVERSITY OF IOWA · PI BUTLER, NOAH SULLIVAN, WEBER, MARY · 1996 to 2025
$8.1M
RESEARCH TRAINING IN INFECTIOUS DISEASEST32AI007343 · NIAID · UNIVERSITY OF IOWA · PI STAPLETON, JACK T. · 1988 to 2024
$5.0M
Mechanistic Studies on Staphylococcal Quorum Quenching Natural ProductsR01AT007052 · NCCIH · EMORY UNIVERSITY · PI QUAVE, CASSANDRA LEAH · 2012 to 2016
$1.8M
NCCIH NIH HHS R01 AT007052NIAID NIH HHS AI007511NIAID NIH HHS T32 AI007511
6 · The paper itself

Abstract

The Mediterranean is home to a rich history of medical traditions that have developed under the influence of diverse cultures over millennia. Today, many such traditions are still alive in the folk medical practices of local people. Investigation of botanical folk medicines used in the treatment of skin and soft tissue infections led us to study Castanea sativa (European Chestnut) for its potential antibacterial activity. Here, we report the quorum sensing inhibitory activity of refined and chemically characterized European Chestnut leaf extracts, rich in oleanene and ursene derivatives (pentacyclic triterpenes), against all Staphylococcus aureus accessory gene regulator (agr) alleles. We present layers of evidence of agr blocking activity (IC50 1.56-25 μg mL-1), as measured in toxin outputs, reporter assays hemolytic activity, cytotoxicity studies, and an in vivo abscess model. We demonstrate the extract's lack of cytotoxicity to human keratinocytes and murine skin, as well as lack of growth inhibitory activity against S. aureus and a panel of skin commensals. Lastly, we demonstrate that serial passaging of the extract does not result in acquisition of resistance to the quorum quenching composition. In conclusion, through disruption of quorum sensing in the absence of growth inhibition, this study provides insight into the role that non-biocide inhibitors of virulence may play in future antibiotic therapies.

Indexed as

AnimalsAnti-Bacterial AgentsBacterial ProteinsBacterial ToxinsCell LineCells, CulturedDrug Resistance, BacterialErythrocytesFagaceaeHemolysin ProteinsHumansKeratinocytesMiceMicrobial Sensitivity TestsOleanolic AcidPlant ExtractsAgr protein, Staphylococcus aureusAnti-Bacterial AgentsBacterial ProteinsBacterial ToxinsHemolysin ProteinsOleanolic AcidPlant Extractsstaphylococcal alpha-toxinstaphylococcal delta toxinTrans-Activators

Identifiers

PMID26295163
PMCPMC4546677
OpenAlexW1839089902

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.