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Toxin Profiles, and Cell‐Surface Properties of Salmonella Strains Isolated from Swedish Travelers
Author(s) -
Baloda Suraj B.,
Krovacek Karel
Publication year - 1991
Publication title -
microbiology and immunology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.664
H-Index - 70
eISSN - 1348-0421
pISSN - 0385-5600
DOI - 10.1111/j.1348-0421.1991.tb01622.x
Subject(s) - microbiology and biotechnology , salmonella , toxin , agar , biology , fibronectin , agar plate , cell , lysis , bacteria , biochemistry , genetics
Toxin production, cell‐surface hydrophobicity and fibronectin‐binding properties of 21 Salmonella strains of different species, isolated from Swedish travelers to different parts of the world, were studied. Cell sonicate supernatants from blood agar grown cultures of 80% of the strains induced rabbit skin permeability reaction in the form of induration and/or blueing while 33% of the strains also produced cell necrotizing factor on rabbit skin. Four strains were negative in the rabbit skin permeability test, while only two were negative when tested on CHO cells. When cultured on blood agar, a majority of the strains (17/21) showed low cell‐surface hydrophobicity, showing no aggregation even at 1.5 M ammonium sulfate concentration in salt aggregation test (SAT), while only four strains showed high cell‐surface hydrophobicity. Furthermore, these strains could be classified as low fibronectin binders due to their poor interaction with fibronectin or its 29 kDa N‐terminal fragment.

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