Journal of Antimicrobial Chemotherapy, Vol 41, 51-55, Copyright © 1998 by The British Society for Antimicrobial Chemotherapy
S Favre-Bonte, C Forestier and B Joly
The effect of subinhibitory concentrations of roxithromycin on the adhesion
of three strains of Klebsiella pneumoniae to Int-407 cells was studied.
Adherence was markedly inhibited and the effect was increased when
roxithromycin was added to the cell culture medium rather than to the
bacterial growth medium. Several assays were performed in order to
understand the mechanism by which roxithromycin exerted this inhibitory
effect. The greatest effect was obtained when roxithromycin was
concentrated in the extracellular compartment; when roxithromycin was
concentrated in the intracellular compartment, the inhibitory effect was
reduced. The analysis of adhesion factors of bacteria showed that exposure
to roxithromycin did not alter their apparent structure or quantity.
Roxithromycin appears to interfere in the interaction between bacteria and
eukaryotic receptors.
ORIGINAL ARTICLES
Inhibitory effect of roxithromycin on adhesion of Klebsiella pneumoniae strains 3051, CF504 and LM21
Laboratoire de Bacteriologie, Faculte de Pharmacie, Universite d'Auvergne, Clermont-Ferrand, France.
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