TY - JOUR A1 - Hughes, C. A1 - Hacker, Jörg A1 - Roberts, A. A1 - Goebel, W T1 - Hemolysin production as a virulence marker in symptomatic and asymptomatic urinary tract infections caused by Escherichia coli N2 - Potential virulence, as defined by combined Ievels of adhesion to urinary epithelial cells, serum resistance, and mouse toxicity, was assessed for Escherichia coli strains causing symptomatic and asymptomatic urinary tract infections in relation to the carriage of hemolysin and other suspected virulence determinants. Hemolysin production (Hly), associated with certain 0 (04, 06, 018, and 075), K (5), and hemagglutination (VI and VII) antigenic types but not colicin V production (Cva), was evident in 83 and 60% ofisolates in groups possessing high potential virulence andin only 11 and 6% of those with low virulence. Strains of particular 0-types were not more virulent per se, but among the serotypes, specific combinations of virulence factors appeared decisive, e.g., 018 HAVI B/D/G Hly+ K5+t- and 018 HAIIIIIVBN Hly- Cva +t- Kl +t- strains were, respectively, of high and low potential virulence. Isolates with high potential virulence were found to a similar extent in symptomatic and asymptomatic infections. KW - Infektionsbiologie Y1 - 1983 UR - https://opus.bibliothek.uni-wuerzburg.de/frontdoor/index/index/docId/5235 UR - https://nbn-resolving.org/urn:nbn:de:bvb:20-opus-59346 ER -