Epidemiology and Infection

Research Article

Cell-surface hydrophobicity of Staphylococcus saprophyticus

P. F. Schneidera1 and T. V. Rileya2 c1

a1 Western Diagnostic Pathology, Myaree, Western Australia 6154

a2 Department of Microbiology, University of Western Australia and Sir Charles Gairdner Hospital, The Queen Elizabeth II Medical Centre, Nedlands, Western Australia 6009


The cell-surface hydrophobicity of 100 urinary isolates of Staphylococcus saprophyticus, cultured from symptomatic females in the general population, was assessed using a two-phase aqueous: hydrocarbon system. Relatively strong cell-surface hydrophobicity was exhibited by 79 isolates using the criteria employed, while only 2 of the remaining 21 isolates failed to demonstrate any detectable hydrophobicity. Cell-surface hydrophobicity may be a virulence factor of S. saprophyticus. important in adherence of the organism to uroepithelia. Additionally, the data support the concept that cell-surface hydrophobicity may be a useful predictor of clinical significance of coagulase-negative staphylococci isoated from clinical sources.

(Accepted August 03 1990)


c1 Author for correspondence.