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Titre :
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Adhesion of the positively charged bacterium Stenotrophomonas (Xanthomonas) maltophilia 70401 to glass and teflon
|
|
Auteurs :
|
B. Jucker ;
H. Harms ;
SWISS FEDERAL INSTITUTE FOR TECHNOLOGY DUBENDORF ;
A. Zehnder ;
SWISS FEDERAL INSTITUTE FOR ENVIRONMENTAL AND TECHNOLOGY DUBENDORF
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Type de document :
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article/chapitre/communication
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|
Année de publication :
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1996
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Format :
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p.5472-5479
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Langues:
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= Anglais
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Catégories :
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Biologie
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Mots-clés:
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BACTERIE
;
ACTIVITE BACTERIENNE
;
MICROORGANISME
;
VERRE
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Résumé :
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Medical implants are often colonized by bacteria which may cause severe infections. The initial step in the colonization, the adhesion of bacteria to the artificial solid surface, is governed mainly by long-range van der Waals and electrostatic interactions between the solid surface and the bacterial cell. The positive charge probably originates from proteins located in the outer membrane. For this bacterium, both long-range forces involved in adhesion are attractive. While adhesion of negatively charged bacteria is impeded in media of low ionic strength because of a thick negatively charged diffuse layer, adhesion of S. maltophilia was particulary favored in dilute medium. The adhesion efficiencies of S. maltophilia at various ionic strengths could be explained in terms of calculated long-range interaction energies between S. maltophilia and glass and teflon.
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Source :
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Journal of bacteriology, vol. 178, n° 18
|
