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- W2149084968 abstract "The role of bacterial adherence in the persistence of bacteria in the human urinary tract was analyzed. Women with chronic symptomatic urinary tract infections were subjected to deliberate colonization with nonvirulent Escherichia coli, after eradication of their current infections. E. coli organisms were instilled into the bladder through a catheter. The strain used for colonization, E. coli 83972, was isolated from a patient with stable bacteriuria. It lacked expressed adherence factors and did not belong to the uropathogenic O:K:H serotypes. Strain 83972 was transformed with the pap and pil DNA sequences encoding Gal alpha 1-4Gal beta- and mannose-specific (type 1) adhesins. Patients were colonized with a mixture of the wild-type and the transformed strains. E. coli 83972 caused stable bacteriuria for greater than 30 days in 7 of 12 individuals. In contrast, the Gal alpha 1-4 Gal beta-recognizing or mannose-binding transformants were eliminated within 48 h. The consistent superiority of the wild-type strain in establishing stable bacteriuria when compared with the adhesive transformants did not appear to be due to differences in growth rates or to plasmid segregation. Rather, the transformants expressing the adhesin determinants were selectively eliminated by the host. This suggested that the acquisition of adherence factors is not sufficient to increase the fitness of E. coli for survival in the urinary tract of humans." @default.
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- W2149084968 date "1991-09-01" @default.
- W2149084968 modified "2023-09-30" @default.
- W2149084968 title "Persistence of Escherichia coli bacteriuria is not determined by bacterial adherence" @default.
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- W2149084968 doi "https://doi.org/10.1128/iai.59.9.2915-2921.1991" @default.
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