1887

Abstract

SUMMARY: The long-term catheterized urinary tract appears to offer a niche for , otherwise an unusual clinical isolate. , the most frequent and persistent isolate from the urine of 51 long-term catheterized patients, was recovered from 761 of 1230 (62%) weekly urine specimens. To test the hypothesis that prevalence of this species may be due to adherence properties of the organism, 20 selected strains from 14 patients at two nursing homes, representing six distinct serotypes and harbouring combinations of nine different plasmid species, were tested for adherence to uroepithelial cells (UEC). Optimal conditions were determined for differentiating strains on the basis of adherence to UEC. These strains, grown in nutrient broth, were incubated with UEC isolated from the urine of a healthy adult female (10 bacteria per 10 cells). Washed UEC, retained on 8 μm pore diameter filters, were transferred to slides, fixed and stained; bacteria were counted on each of 40 cells. Fourteen of the 20 strains were defined as adherent to UEC by comparison of mean adherent bacteria and percentage of uroepithelial cells with more than 10 bacteria. Adherence was compared to that of a P-fimbriated strain of It was not inhibited by 50 mM-mannose. We conclude that the majority of isolates are adherent to UEC and suggest that this may play a role in the persistence of this organism in the catheterized urinary tract.

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/content/journal/micro/10.1099/00221287-132-10-2863
1986-10-01
2019-10-15
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