Nosocomial pathogen biofilms on biomaterials: Different growth medium conditions and components of biofilms produced in vitro

Nosocomial pathogens can develop biofilms on hospital surfaces and medical devices; however, few studies have focused on the evaluation of mono-and dual-species biofilms developed by nosocomial pathogens under different growth conditions. This study investigated biofilm development by nosocomial pat...

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Bibliographic Details
Published in:Journal of microbiology, immunology and infection immunology and infection, 2021-12, Vol.54 (6), p.1038-1047
Main Authors: Solis-Velazquez, Oscar Alberto, Gutiérrez-Lomelí, Melesio, Guerreo-Medina, Pedro Javier, Rosas-García, María de Lourdes, Iñiguez-Moreno, Maricarmen, Avila-Novoa, María Guadalupe
Format: Article
Language:English
Subjects:
Bacteria - classification
Bacteria - drug effects
Bacteria - growth & development
Bacterial Adhesion
Bacterial Proteins - metabolism
Biocompatible Materials - pharmacology
Biofilm
Biofilms - drug effects
Biofilms - growth & development
Coculture Techniques
Colony Count, Microbial
Cross Infection - microbiology
Culture Media - pharmacology
DNA, Bacterial - metabolism
Extracellular Polymeric Substance Matrix - drug effects
Extracellular Polymeric Substance Matrix - metabolism
Extracellular Polymeric Substance Matrix - ultrastructure
Humans
Medical device
Nosocomial pathogen
Rubber - pharmacology
Stainless Steel - pharmacology
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Summary:Nosocomial pathogens can develop biofilms on hospital surfaces and medical devices; however, few studies have focused on the evaluation of mono-and dual-species biofilms developed by nosocomial pathogens under different growth conditions. This study investigated biofilm development by nosocomial pathogens (Acinetobacter baumannii, Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa) on biomaterials in different culture media and their components of the extracellular matrix biofilm. The mono-species biofilms showed cell densities from 7.50 to 9.27 Log10 CFU/cm2 on natural rubber latex type I (NLTI) and from 7.58 to 8.79 Log10 CFU/cm2 on stainless steel (SS). Dual-species biofilms consisted of S. aureus + P. aeruginosa (7.87–8.27 Log10 CFU/cm2 in TSBP and TSBME onto SS; p 
ISSN:1684-1182
1995-9133
DOI:10.1016/j.jmii.2020.07.002