Clinical isolates of Pseudomonas aeruginosa from superficial skin infections have different physiological patterns.

Abstract:

:Pseudomonas aeruginosa are known to have a wide physiological potential allowing them to constantly populate diverse environments leading to severe infections of humans such as septicemia, leg ulcers, and burn wounds. We set out to probe physiological characteristics of P. aeruginosa isolates from diabetic leg ulcers collected from Helsinki metropolitan area. A total of 61 clinical isolates were obtained. Detailed phenotypic (physiological) characteristics [outer membrane (OM) permeability, membrane voltage, and activity of multidrug resistance pumps] were determined in several growth phases leading to the division of the analyzed set of P. aeruginosa strains into five distinct clusters including cells with similar physiological properties. In addition, their antibiotic resistance patterns and genetic heterogeneity were determined. Multiple isolates from the same patient were genetically very closely related and belonged to the same phenotypic cluster. However, genetically close isolates from different patients expressed very different phenotypic properties. The characteristics of infected patients seem to determine the growth environments for microorganisms that adapt by changing their physiological and/or genetic properties.

journal_name

FEMS Microbiol Lett

authors

Buivydas A,Pasanen T,Senčilo A,Daugelavičius R,Vaara M,Bamford DH

doi

10.1111/1574-6968.12148

subject

Has Abstract

pub_date

2013-06-01 00:00:00

pages

183-9

issue

2

eissn

0378-1097

issn

1574-6968

journal_volume

343

pub_type

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