Evidence map›Paper›PMID 34730110›Full record

ArticleThe Journal of clinical investigation2021

Intracellular Staphylococcus aureus triggers pyroptosis and contributes to inhibition of healing due to perforin-2 suppression.

Irena Pastar, Andrew P Sawaya, Jelena Marjanovic, Jamie L Burgess, Natasa Strbo, Katelyn E Rivas, Tongyu C Wikramanayake, Cheyanne R Head, Rivka C Stone, Ivan Jozic and 5 more

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of clinical investigation, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed
3.9field-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

47 citing papers in PubMed, 67 citations in OpenAlex.

  1. Review
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  11. Article
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  14. Inflammation, diabetic foot and related treatments.Frontiers in endocrinology · 2025
    Review
  15. Skin microbiota and diabetic foot ulcers.Frontiers in microbiology · 2025
    Review
  16. Review
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  18. Article
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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 2 institutions in 2 countries.

Irena PastarWound Healing and Regenerative Medicine Research Program, Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery.
Andrew P SawayaWound Healing and Regenerative Medicine Research Program, Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery.
Jelena MarjanovicWound Healing and Regenerative Medicine Research Program, Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery.
Jamie L BurgessWound Healing and Regenerative Medicine Research Program, Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery.
Natasa StrboDepartment of Microbiology and Immunology, and.
Katelyn E RivasDepartment of Microbiology and Immunology, and.
Tongyu C WikramanayakeWound Healing and Regenerative Medicine Research Program, Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery.
Cheyanne R HeadWound Healing and Regenerative Medicine Research Program, Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery.
Rivka C StoneWound Healing and Regenerative Medicine Research Program, Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery.
Ivan JozicWound Healing and Regenerative Medicine Research Program, Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery.
Olivera StojadinovicWound Healing and Regenerative Medicine Research Program, Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery.
Eran Y KornfeldWound Healing and Regenerative Medicine Research Program, Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery.
Robert S KirsnerWound Healing and Regenerative Medicine Research Program, Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery.
Hadar Lev-TovWound Healing and Regenerative Medicine Research Program, Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery.
Marjana Tomic-CanicWound Healing and Regenerative Medicine Research Program, Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery.
Regenerative Medicine Institute · MXUniversity of Miami · US

Funding

Perforin-2: The role of a novel antimicrobial protein in diabetic foot ulcersR01NR015649 · NINR · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI STRBO, NATASA, TOMIC-CANIC, MARJANA · 2015 to 2019
$2.6M
University of Miami Clinical Research Unit of the Diabetic Foot ConsortiumU01DK119085 · NIDDK · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI KIRSNER, ROBERT SCOTT, LEV-TOV, HADAR · 2018 to 2022
$1.8M
NIDDK NIH HHS U01 DK119085NINR NIH HHS R01 NR015649
6 · The paper itself

Abstract

Impaired wound healing associated with recurrent Staphylococcus aureus infection and unresolved inflammation are hallmarks of nonhealing diabetic foot ulcers (DFUs). Perforin-2, an innate immunity molecule against intracellular bacteria, limits cutaneous infection and dissemination of S. aureus in mice. Here, we report the intracellular accumulation of S. aureus in the epidermis of DFUs with no clinical signs of infection due to marked suppression of perforin-2. S. aureus residing within the epidermis of DFUs triggers AIM2 inflammasome activation and pyroptosis. These findings were corroborated in mice lacking perforin-2. The effects of pyroptosis on DFU clinical outcomes were further elucidated in a 4-week longitudinal clinical study in patients with DFUs receiving standard care. Increased AIM2 inflammasome and ASC-pyroptosome coupled with induction of IL-1β were found in nonhealing DFUs compared with healing DFUs. Our findings revealed that perforin-2 suppression, intracellular S. aureus accumulation, and associated induction of pyroptosis contribute to healing inhibition and prolonged inflammation in patients with DFUs.

Indexed as

AdultAgedAnimalsDiabetic FootDNA-Binding ProteinsEpidermisFemaleHumansInterleukin-1betaMaleMembrane ProteinsMiceMice, KnockoutMiddle AgedPore Forming Cytotoxic ProteinsPyroptosisAIM2 protein, humanAim2 protein, mouseDNA-Binding ProteinsIL1B protein, humanIL1B protein, mouseInterleukin-1betaMembrane ProteinsMPEG1 protein, humanMpeg1 protein, mousePore Forming Cytotoxic ProteinsDermatologyDiabetesInflammationMolecular pathologySkin

Identifiers

PMID34730110
PMCPMC8670843
OpenAlexW3209632366

What Socratic 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 Socratic graph.