Simulation of catalase-dependent tolerance of microbial biofilm to hydrogen peroxide with a biofilm computer model.
Journal
NPJ biofilms and microbiomes
ISSN: 2055-5008
Titre abrégé: NPJ Biofilms Microbiomes
Pays: United States
ID NLM: 101666944
Informations de publication
Date de publication:
23 08 2023
23 08 2023
Historique:
received:
03
05
2023
accepted:
07
08
2023
medline:
25
8
2023
pubmed:
24
8
2023
entrez:
23
8
2023
Statut:
epublish
Résumé
Hydrogen peroxide (HP) is a common disinfectant and antiseptic. When applied to a biofilm, it may be expected that the top layer of the biofilm would be killed by HP, the HP would penetrate further, and eventually eradicate the entire biofilm. However, using the Biofilm.jl computer model, we demonstrate a mechanism by which the biofilm can persist, and even become thicker, in the indefinite treatment with an HP solution at concentrations that are lethal to planktonic microorganisms. This surprising result is found to be dependent on the neutralization of HP by dead biomass, which provides protection for living biomass deeper within the biofilm. Practically, to control a biofilm, this result leads to the concept of treating with an HP dose exceeding a critical threshold concentration rather than a sustained, lower-concentration treatment.
Identifiants
pubmed: 37612330
doi: 10.1038/s41522-023-00426-z
pii: 10.1038/s41522-023-00426-z
pmc: PMC10447567
doi:
Substances chimiques
Hydrogen Peroxide
BBX060AN9V
Catalase
EC 1.11.1.6
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
60Informations de copyright
© 2023. Springer Nature Limited.
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