Journal Article10.1080/1120009X.1990.11738975
The effect of subinhibitory concentrations of some antibiotics on the hydrophobicity of gram-negative bacteria.
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TL;DR: Investigation of Gram-negative bacteria isolated from urinary tract infections found that Pretreatment with antibiotics generally reduced hydrophobicity and thus affected the initial reversible phase of attachment of bacteria to eukaryotic cells.
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Abstract: Cell surface hydrophobicity is currently regarded as an important factor in promoting bacterial adherence to a wide variety of surfaces. This feature was investigated in some Gram-negative bacteria isolated from urinary tract infections and the extent to which their surface characteristics were affected by subinhibitory concentrations of some antibiotics was assayed. Surface properties were evaluated using the salting-out technique (SAT) and bacterial absorption to n-hexadecane (BATH). SAT showed that all except 3 Escherichia coli strains were autoaggregating. BATH detected more hydrophobic characteristics in the stationary phase of bacterial growth. Pretreatment with antibiotics generally reduced hydrophobicity and thus affected the initial reversible phase of attachment of bacteria to eukaryotic cells.
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Citations
A reference guide to microbial cell surface hydrophobicity based on contact angles
TL;DR: Comparison of the results of an acid-base analysis of the microbial cell surfaces on the basis of contact angles for the latter two strains and theresults of the so-called MATH (microbial adhesion to hydrocarbons) assay for cell surface hydrophobicity, demonstrates that only contact angles can provide a real estimate of cell surface HydrophOBicity.
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The effects of pH, ionic strength and polyvalent ions on the cell surface hydrophobicity of Escherichia coli evaluated by the BATH and HIC methods
TL;DR: Polyvalent ions increased adherence to octyl-Sepharose while reducing adherence to dichloromethane, indicating the possibility of different mechanisms of interaction between E. coli and these substrates.
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Effect of growth temperature on the biosynthesis of cell wall proteins from Bifidobacterium globosum.
TL;DR: It was observed that BIFOP expression at low-growth temperature was considerably attenuated, while at medium- and high- growth temperature it increased, and at high-growth temperatures, the presence of a new common protein was detected in all the strains studied.
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Adhesins of uropathogenic bacteria: Properties, identification and use for new antibacterial strategies
C. A. Guzmán,C. Pruzzo +1 more
TL;DR: Attachment to epithelia is a promising target for developing new methods in prophylaxis and therapy and the knowledge of the molecular mechanisms underlying adherence may be useful for epidemiological research in the pathogenesis of UTI.
Effects of Electroporation on Antibiotic Susceptibility and Adhesive Activity to n-Hexadecane in Rhodococcus ruber IEGM 231
Maria S. Kuyukina,Maria S. Kuyukina,A. M. Varushkina,A. M. Varushkina,I. B. Ivshina,I. B. Ivshina +5 more
TL;DR: Electroporation can be used for the electrotransformation of hydrocarbon-oxidizing rhodococci in order to increase the efficiency of recombinant clone selection via a decrease in the cell recovery period and the antibiotic concentration in selective medium.
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TL;DR: Evidence is provided for the suspected role of hydrophobic interaction in the adhesive properties of certain enteropathogenic strains of E. coli and provides convenient and rapid alternative means of screening strains for a property potentially associated with adhesiveness.
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Hemagglutination patterns of enterotoxigenic and enteropathogenic Escherichia coli determined with human, bovine, chicken, and guinea pig erythrocytes in the presence and absence of mannose
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