Evidence map›Paper›PMID 27068096›Full record

ArticleInfection and immunity2016

Hyaluronan Modulation Impacts Staphylococcus aureus Biofilm Infection.

Carolyn B Ibberson, Corey P Parlet, Jakub Kwiecinski, Heidi A Crosby, David K Meyerholz, Alexander R Horswill

Open access · bronzeAbstract read
In one paragraph

Article in Infection and immunity, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed
5.4field-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

66 citing papers in PubMed, 105 citations in OpenAlex.

  1. Oral hymecromone decreases hyaluronan in human study participants.The Journal of clinical investigation · 2022
    Trial
  2. Prevention and Treatment ofPathogens (Basel, Switzerland) · 2026
    Review
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Biofilm-host immunometabolic crosstalk inFrontiers in immunology · 2026
    Review
  9. Review
  10. Antibacterial and Antibiofilm Activity ofJournal of microbiology and biotechnology · 2025
    Article
  11. The NagY antiterminator inMicrobiology spectrum · 2025
    Article
  12. Article
  13. Review
  14. Article
  15. Review
  16. Article
  17. Microbiology (Reading, England) · 2025
    Article
  18. Review
  19. Polymicrobial interactions betweenbioRxiv : the preprint server for biology · 2024
    Article
  20. Article

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

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

6 authors at 1 institution in 1 country.

Carolyn B IbbersonDepartment of Microbiology, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA.
Corey P ParletDepartment of Microbiology, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA.
Jakub KwiecinskiDepartment of Microbiology, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA.
Heidi A CrosbyDepartment of Microbiology, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA.
David K MeyerholzDepartment of Pathology, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA.
Alexander R HorswillDepartment of Microbiology, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA alex-horswill@uiowa.edu.
University of Iowa · US

Funding

The S. aureus biofilm lifecycleP01AI083211 · NIAID · UNIVERSITY OF NEBRASKA MEDICAL CENTER · PI KIELIAN, TAMMY L · 2009 to 2023
$32.1M
Vector Core-Core 2P30DK054759 · NIDDK · UNIVERSITY OF IOWA · PI Amy Leanne Ryan · 1998 to 2026
$30.5M
RESEARCH TRAINING IN INFECTIOUS DISEASEST32AI007343 · NIAID · UNIVERSITY OF IOWA · PI STAPLETON, JACK T. · 1988 to 2024
$5.0M
NIAID NIH HHS P01 AI083211NIAID NIH HHS T32 AI007343NIDDK NIH HHS P30 DK054759
6 · The paper itself

Abstract

Staphylococcus aureus is a leading cause of chronic biofilm infections. Hyaluronic acid (HA) is a large glycosaminoglycan abundant in mammalian tissues that has been shown to enhance biofilm formation in multiple Gram-positive pathogens. We observed that HA accumulated in an S. aureus biofilm infection using a murine implant-associated infection model and that HA levels increased in a mutant strain lacking hyaluronidase (HysA). S. aureus secretes HysA in order to cleave HA during infection. Through in vitro biofilm studies with HA, the hysA mutant was found to accumulate increased biofilm biomass compared to the wild type, and confocal microscopy showed that HA is incorporated into the biofilm matrix. Exogenous addition of purified HysA enzyme dispersed HA-containing biofilms, while catalytically inactive enzyme had no impact. Additionally, induction of hysA expression prevented biofilm formation and also dispersed an established biofilm in the presence of HA. These observations were corroborated in the implant model, where there was decreased dissemination from an hysA mutant biofilm infection compared to the S. aureus wild type. Histopathology demonstrated that infection with an hysA mutant caused significantly reduced distribution of tissue inflammation compared to wild-type infection. To extend these studies, the impact of HA and S. aureus HysA on biofilm-like aggregates found in joint infections was examined. We found that HA contributes to the formation of synovial fluid aggregates, and HysA can disrupt aggregate formation. Taken together, these studies demonstrate that HA is a relevant component of the S. aureus biofilm matrix and HysA is important for dissemination from a biofilm infection.

Indexed as

Gene Expression Regulation, BacterialHost-Pathogen InteractionsAnimalsBiofilmsCatheter-Related InfectionsHyaluronic AcidMaleMiceMice, Inbred C57BLMutationPolysaccharide-LyasesSignal TransductionStaphylococcal InfectionsStaphylococcus aureusSynovial FluidVascular Access Deviceshyaluronate lyaseHyaluronic AcidPolysaccharide-Lyases

Identifiers

PMID27068096
PMCPMC4907140
OpenAlexW2337661696

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.