نتایج جستجو برای: subinhibitory concentrations
تعداد نتایج: 306940 فیلتر نتایج به سال:
This study used kill-kinetic methods to provide data on the bactericidal activity of subinhibitory (1/2 X MIC), inhibitory (1 x MIC), and suprainhibitory (4X, 6X, and 8X MIC) concentrations of deptomycin (LY146032) against strains of enterococci compared with those of ciprofloxacin, vancomycin, and ampicillin. Deptomycin was the most active agent tested, as determined by broth microdilution met...
Ga(3+) is a semimetal element that competes for the iron-binding sites of transporters and enzymes. We investigated the activity of gallium maltolate (GaM), an organic gallium salt with high solubility, against laboratory and clinical strains of methicillin-susceptible Staphylococcus aureus (MSSA), methicillin-resistant S. aureus (MRSA), methicillin-susceptible Staphylococcus epidermidis (MSSE)...
We determined the MICs of ampicillin, ciprofloxacin, erythromycin, imipenem, and rifampin for two clinical isolates of Legionella pneumophila serogroup 1 by 3-(4,5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) reduction assay and by quantitative culture. To test the influence of subinhibitory concentrations (sub-MICs) of antimicrobial agents on Legionella uptake into Acanthamoeba...
BACKGROUND Active efflux is a common mechanism of resistance to fluoroquinolones in Streptococcus pneumoniae. Two efflux systems have been described so far in this species: PmrA, a member of the major facilitator superfamily; and the two ABC transporters PatA and PatB. We studied the inducibility of expression of pmrA, patA and patB by using subinhibitory concentrations of fluoroquinolones. M...
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