Abstract
S. saprophyticus is an established pathogen in man, devoided of characteristics associated with pathogenicity in Staphylococcus aureus. The ability of this species to attach to cells from regions, viz. the urinary tract, where it acts as an invador and to cells from areas where it is known as a commensal, was compared to its behaviour in this respect with another staphylococcal species, viz. S. epidermidis. S. saprophyticus showed a preferenital adherence to human exfoliated urogenital cells, when compared with its ability to attach to skin and buccal cells from man and also when compared with procine cells from these regions. The profound ability to adhere to human exfoliated urogenital epithelial cells by far exceeded that of S. epidermidis, while no such species difference was found when testing porcine cells (S. saprophyticus is unknown as a urogenital tract pathogen in pigs). When studied in a two-polymer, aqueous phase system, S. saprophyticus and S. epidermidis were found to have a negative surface charge at pH 7.2, but the former carried a considerably higher surface charge density. Both staphylococcal species exhibited a poor hydrophobic interaction liability. These physico-chemical surface characteristics are briefly discussed with regard to the differential bacteria-cell interactions of these species.
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Schedule a callMore From: Acta Pathologica Microbiologica Scandinavica Section B Microbiology
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