The contribution of bacterial surface hydrophobicity to the process of adherence of Pseudomonas aeruginosa to hydrophilic contact lenses

Current Eye Research
S A KlotzM S Osato

Abstract

Ten isolates of Pseudomonas aeruginosa obtained from the corneas of patients with Pseudomonas keratitis adhered to soft contact lenses in significantly greater numbers than did six isolates from other body sites (P less than .05). However, there was no predominant serotype among the 10 corneal isolates tested. Isolates grown statically in broth at 37 degrees C formed a pellicle and adhered two times as much to contact lenses as did isolates grown in broth while shaking which did not form a pellicle (P less than .01). The more adherent isolates (grown at 37 degrees C) were shown to be more hydrophobic than the less adherent bacteria (grown at 26 degrees C) by their propensity to accumulate at the interface between hexadecane and saline and their movement into polyethylene glycol from dextran. These corneal isolates agglutinated erythrocytes, a process that was inhibited by dilute solutions (as low as 0.01%) of three commonly used surfactants. These same surfactants inhibited the adherence of Pseudomonas aeruginosa to soft contact lens surfaces by as much as 52%. It is concluded that hydrophobic interactions may significantly contribute to the ability of Pseudomonas aeruginosa to adhere to contact lenses.

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Citations

Jan 1, 1993·Eye·J A DuránC García-Riestra
Feb 28, 2013·Journal of Ocular Pharmacology and Therapeutics : the Official Journal of the Association for Ocular Pharmacology and Therapeutics·Mukesh Kumar YadavChoul Yong Park
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Mar 26, 2015·Pathogens·Paulo J M BispoMichael S Gilmore
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Jul 24, 2012·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Ajay Kumar VijayMark D P Willcox
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Aug 1, 1990·Current Eye Research·S I Butrus, S A Klotz
Sep 1, 1989·Applied and Environmental Microbiology·S A Klotz

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