Comparative study of 7 fluorescent pseudomonad clinical isolates. - Archive ouverte HAL Access content directly
Journal Articles Canadian Journal of Microbiology Year : 2008

Comparative study of 7 fluorescent pseudomonad clinical isolates.

Abstract

There is some debate about the potential survival of Pseudomonas fluorescens at temperatures above 37 degrees C and its consequences for infectious potential, owing to the heterogeneity of clinical strains. Seven clinical strains growing at 37 degrees C or more were submitted for polyphasic identification; 2 were identified as Pseudomonas mosselii and 4 were precisely characterized as P. fluorescens bv. I or II. The binding indexes on glial cells of the strains identified as P. fluorescens bv. I and P. mosselii were compared with that of a reference psychrotrophic strain, P. fluorescens MF37 (bv. V). Clinical P. fluorescens had a similar adherence potential range than strain MF37. Conversely, the binding indexes for P. mosselii strains were 3 times greater than that for strain MF37. These data, and those obtained by comparing the cytotoxic activities of P. fluorescens clinical strains, suggest the existence of different virulence mechanisms, leading either to a low infectious form or to a microorganism with cytotoxic activity in the same range as that of P. mosselii or even Pseudomonas aeruginosa.
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Dates and versions

hal-00390599 , version 1 (02-06-2009)

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A. Chapalain, G. Rossignol, O. Lesouhaitier, A. Merieau, C. Gruffaz, et al.. Comparative study of 7 fluorescent pseudomonad clinical isolates.. Canadian Journal of Microbiology, 2008, 54 (1), pp.19-27. ⟨10.1139/w07-110⟩. ⟨hal-00390599⟩
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