1999
DOI: 10.1093/jac/43.5.711
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In-vitro activity of grepafloxacin, a new fluoroquinolone, against mycoplasmas

Abstract: The in-vitro activity of grepafloxacin, a new oral fluoroquinolone antibiotic, was compared with those of three other fluoroquinolones and two unrelated antimicrobials, doxycycline and erythromycin, against various Mycoplasma spp. For 65 mycoplasma and 42 ureaplasma strains, grepafloxacin (MIC range 0.03-2 mg/L) was some two to 16 times more active than ofloxacin and ciprofloxacin, showing similar activity to that of sparfloxacin. MBCs of grepafloxacin increased two- to 16-fold when compared with MICs and were… Show more

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Cited by 68 publications
(13 citation statements)
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“…Thus, some laboratories prefer to test a frozen stock culture that was serially diluted previously to determine the number of viable cells and then dilute it to an inoculum containing 10 4 to 10 5 colorchanging units/ml for use directly after a 2-h prewarming period (435,436). SP4 medium and Hayflick's modified medium (pH 7.4 to 7.6) have been used for determining MICs for M. pneumoniae, with similar results (35,434,435). MIC test mixtures should be incubated at 37°C.…”
Section: Antimicrobial Susceptibility Profilesmentioning
confidence: 99%
“…Thus, some laboratories prefer to test a frozen stock culture that was serially diluted previously to determine the number of viable cells and then dilute it to an inoculum containing 10 4 to 10 5 colorchanging units/ml for use directly after a 2-h prewarming period (435,436). SP4 medium and Hayflick's modified medium (pH 7.4 to 7.6) have been used for determining MICs for M. pneumoniae, with similar results (35,434,435). MIC test mixtures should be incubated at 37°C.…”
Section: Antimicrobial Susceptibility Profilesmentioning
confidence: 99%
“…Compared to ciprofloxacin, moxifloxacin exerts stronger activity against most grampositive organisms and mycobacteria and some nonfermenting bacteria, anaerobes, and chlamydia as well as mycoplasma, while the MICs of moxifloxacin for Enterobacteriaceae and Pseudomonas aeruginosa are usually higher (3,4,8,21,31). Moxifloxacin shows improved activity against topoisomerase IV, which is encoded by the parC and parE genes.…”
mentioning
confidence: 99%
“…Moxifloxacin is a new fluoroquinolone compound which has been reported to be more effective than ofloxacin and ciprofloxacin against a wide range of pathogens, including Streptococcus pneumoniae, Chlamydia pneumoniae, Mycoplasma pneumoniae, and Legionella pneumophila (2,3,(13)(14)(15). The intracellular pharmacokinetic properties of moxifloxacin are improved compared to those of the oldest fluoroquinolone compounds (10).…”
mentioning
confidence: 99%