Journal
CLINICAL MICROBIOLOGY AND INFECTION
Volume 10, Issue 11, Pages 1011-1014Publisher
BLACKWELL PUBLISHING LTD
DOI: 10.1111/j.1469-0691.2004.01001.x
Keywords
aerobactin; cutaneous infection model; enterobactin; Escherichia coli; siderophore; virulence factors
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Escherichia coli isolates from urinary tract infections (UTIs) (n = 124), extra-urinary sites (n = 37) and normal faecal samples (n = 51) were examined for the presence of virulence factors, including siderophores (aerobactin and enterobactin). The proportion of aerobactin producers was significantly higher in UTI (69.4%; p 0.001) and extra-urinary samples (70.3%; p 0.007) than in controls (41.2%), while the proportion of enterobactin producers was significantly lower in the UTI samples than in the controls (p 0.027). In a cutaneous infection model, aerobactin-positive E. coli showed more growth than non-aerobactin and non-enterobactin isolates, even when other virulence factors were identical.
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