title: Reversal of the surface effects of chlorhexidine diacetate on cells of Providencia stuartii.
abstract: Chlorhexidine diacetate (CHA) increased the hydrophobicity of the cell surface of cells of three strains of Providencia stuartii. Removal of at least some of the CHA from the cells by washing them with an appropriate antidote partially reversed the hydrophobicity-increasing action of the biguanide. The effects of other treatments on cell surface hydrophobicity were examined with these strains and, for comparison, with two strains each of Escherichia coli and Pseudomonas aeruginosa: ethylenediamine tetraacetic acid affected all strains, although not to the same extent, whereas thermal injury (55 degrees C) produced marked changes only with the two E. coli strains.
mesh_terms: D002462:Cell Membrane / Q000187:drug effects / Q000378:metabolism; D002710:Chlorhexidine / Q000494:pharmacology*; D004492:Edetic Acid / Q000494:pharmacology; D004926:Escherichia coli / Q000187:drug effects / Q000378:metabolism; D006358:Hot Temperature; D011511:Proteus / Q000187:drug effects*; D011532:Providencia / Q000187:drug effects* / Q000378:metabolism; D011550:Pseudomonas aeruginosa / Q000187:drug effects / Q000378:metabolism
chemical_list: D004492:Edetic Acid; D002710:Chlorhexidine