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Adherence of clinical isolates ofPseudomonas aeruginosa to hamster trachael epithelium in vitro

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Abstract

The adherence to hamster tracheal epithelium, of mucoid and nonmucoid clinical isolates ofPseudomonas aeruginosa from cystic fibrosis patients, was studied using tracheal organ cultures. Tracheal cultures were infected with 107 colony-forming units per ml of either mucoid or nonmucoid clinical isolates ofP aeruginosa. The tracheal explants were rinsed at various time intervals to remove nonadherent bacteria, fixed, and prepared for transmission-and scanning-electron microscopy. Mucoid isolates were seen adhering to the ciliated epithelium as early as 4 h after initiation of infection, whereas nonmucoid isolates were only observed adhering at 6 to 8 h after infection. Mucoid organisms were found as clusters of bacteria embedded in an extensive extracellular matrix. The nonmucoid isolates were generally found as single organisms with no evidence of an extracellular matrix. These results suggest that the prevalence of mucoid isolates ofP. aeruginosa in cystic fibrosis may be due to adherent properties of the mucoid organism.

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Authors and Affiliations

  1. Department of Microbiology, The Ohio State University, 43210, Columbus, Ohio, USA

    Neil R. Baker & Hilda Marcus

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  1. Neil R. Baker
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  2. Hilda Marcus
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Baker, N.R., Marcus, H. Adherence of clinical isolates ofPseudomonas aeruginosa to hamster trachael epithelium in vitro. Current Microbiology 7, 35–40 (1982). https://doi.org/10.1007/BF01570977

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