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. 1989 Apr;57(4):1050–1053. doi: 10.1128/iai.57.4.1050-1053.1989

Adherence of Pseudomonas aeruginosa to tracheal epithelium.

H Marcus 1, A Austria 1, N R Baker 1
PMCID: PMC313227  PMID: 2494109

Abstract

Adherence of mucoid and nonmucoid strains of Pseudomonas aeruginosa to tracheal epithelium was studied with a perfused-trachea model. The species specificity of adherence was studied by infecting tracheas from hamsters, guinea pigs, or mice. Perfused tracheas from hamsters were infected with strains of P. aeruginosa in the presence of various sugars, lectins, cations, or charged polymers. Adherence of mucoid strains of P. aeruginosa was greatest for guinea pigs; that for hamsters and mice was approximately the same. Nonmucoid strains did not adhere well to epithelium from any of the species tested. N-Acetylglucosamine, galactose, and N-acetylneuraminic acid were the best inhibitors of adherence of mucoid strains of P. aeruginosa. Phaseolus vulgaris agglutinin and Arachis hypogaea agglutinin enhanced adherence of mucoid strains. Adherence of mucoid strains was also enhanced by the presence of Ca2+ in the incubation medium. Poly-L-lysine, poly-L-aspartic acid, and polyglycine inhibited adherence of a mucoid strain by 96, 86, and 52%, respectively. In general, the adherence of nonmucoid strains was not affected. The results indicate that carbohydrates are involved in the interaction of mucoid strains of P. aeruginosa with tracheal cells and that divalent cations may enhance this interaction. The lectin data show that lectins can interact with the mucoid organisms and the host and suggest that lectins may play a role in the adhesion process.

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Selected References

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