Actividad bactericida de superficies de cobre frente a bacterias asociadas a infecciones nosocomiales, en un modelo in vitro de adherencia y sobrevivencia / Adherence to copper and stainless steel metal coupons of common nosocomial bacterial strains
Rev. méd. Chile
;
141(3): 291-297, mar. 2013. ilus
Article
in Spanish
| LILACS
| ID: lil-677335
ABSTRACT
Background:
Copper has a bactericidal activity against a series of bacterial strains.Aim:
To measure resistance to bacterial adherence of copper (Cu) and stainless steel (SS) metal coupons. Material andMethods:
Bacterial strains causing nosocomial infections in Chile were analyzed. Bacterial adherence was studied using apreviously described method based on a system of metal coupons that are immersed in culture media containing the bacteria ofinterest at room temperature.Results:
Adherence to Cu and SS coupons was differentfor Methicillin-resistant Staphylococcus aureus (MRSA), Klebsiella pneumoniae and Acinetobacter baumannii strains. For these strains, no adherence to Cu coupons occurred during the 48 h observation period compared to a rapidly increasing adherence to SS coupons, with a final colony count of 1.00E + 07 cfu/mL. For two different Pseudomonas aeruginosa clinical strains, inhibition of adherence was not observed on Cu coupons, and colony counts were similar for Cu and SS using the standard inoculum (2-3 xlO7 cfu).Apartial decrease in adherence was observed for Cu but not for SS coupons, when a lower inoculum was used.Conclusions:
Copper surfaces represent an interesting option to reduce bacterial contamination in the hospital environment due to its resistance to bacterial adhesión ofmost ofthe common nosocomial bacterial strains.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Stainless Steel
/
Bacterial Adhesion
/
Cross Infection
/
Copper
Limits:
Adult
/
Humans
Language:
Spanish
Journal:
Rev. méd. Chile
Journal subject:
Medicine
Year:
2013
Type:
Article
/
Project document
Affiliation country:
Chile
Institution/Affiliation country:
Universidad de Chile/CL
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