Factors influencing the adhesive properties of Pseudomonas aeruginosa.

The aim of this study was to evaluate different factors which may influence surface and adhesive properties of Pseudomonas aeruginosa strains isolated from patients with urinary tract infections. P. aeruginosa strains exhibited moderate surface hydrophobicity as shown by "salting out" with ammonium sulfate and hydrophobic interaction chromatography.

Induction of human neutrophils chemotaxis by staphylococcal lipase.

Influence of highly purified staphylococcal lipase on chemotactic activity of human polymorphonuclear leukocytes (PMN), has been studied. Staphylococcal lipase exhibited both chemotactic and chemokinetic properties. Chemotactic response was stimulated at concentration as low as 10(-9) M and was dose-dependent.

Streptococcus pyogenes cell wall protein responsible for binding to pharyngeal epithelial cells.

The aim of this study was to identify a streptococcal cell wall substance which is able to bind to epithelial cells. The water-soluble phase of sonicated M+ and M- strains was incubated with pharyngeal and buccal epithelial cells. Electrophoretic analysis of these materials, before and after incubation, showed disappearance of one band from the M+ samples only, after incubation with pharyngeal epithelial cells.