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  • Title: Effects of imipenem and meropenem on serum sensitivity and surface hydrophobicity of Klebsiella pneumoniae.
    Author: Hostacká A.
    Journal: Arzneimittelforschung; 1998 Nov; 48(11):1101-3. PubMed ID: 9850433.
    Abstract:
    Serum sensitivity and surface hydrophobicity of two Klebsiella pneumoniae strains (internal strain No. 378 and 3259) exposed to imipenem (CAS 64221-86-9) and meropenem (CAS 96036-03-2) at subinhibitory concentrations (sub-MICs; 1/4, 1/8 and 1/16 of the MICs) were evaluated. Carbapenems at all sub-MICs tested (with the exception of 1/16 of the MICs in strain 378) decreased susceptibility of bacteria to serum bactericidal activity. All sub-MICs of the antibiotics tested also reduced the bacterial surface hydrophobicity. The surface hydrophobicity of strain 3259 was most effectively decreased after the exposure to imipenem and meropenem at 1/4 of the MICs (to 3% or 5.2% of the control values). The highest decrease of hydrophobicity in strain 378 was found after exposure to imipenem and meropenem at 1/16 of the MICs (19.2% or 32.3%).
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