[The serum bactericidal activity of domestic fleroxacin and lomefloxacin].
OBJECTIVE
To evaluate antibacterial activities in vivo and in vitro of fleroxacin and lomefloxacin.


METHODS
Minimal inhibitory concentration (MIC) and serum bactericidal activity (SBA) domestic fleroxacin and lomefloxacin were determined by agar disk dilution method and microplate method respectively. A clinical observation of fleroxacin and lomefloxacin for treating acute bacillary dysentery was carried out.


RESULTS
MIC(90) of fleroxacin against E. coli, K. pneumoniae, S. dysenteriae, S. aureus was 0.25-2 mg/L, being the same as that of ofloxacin. However, MIC(90) of lomefloxacin against the above mentioned species was twice or fourfold as that of ofloxacin and fleroxacin. The percent age of peak SBA > or = 1:8 with ofloxacin, fleroxacin and lomefloxacin against E. coli, K. pneumoniae, S. dysenteriae was 80%-100%, 90%-100% and 50%-80% respectively (P < 0.01). The clinical cure rates of acute bacillary dysentery were 93.3%, 100% and 100% and the bacterial clearance rates were 93.3%, 100% and 100% in the lomefloxacin, fleroxacin and ofloxacin group respectively.


CONCLUSIONS
The antibacterial activity in vivo and in vitro of fleroxacin against E. coli, K. pneumoniae, S. dysenteriae was similar to that of ofloxacin and stronger than that of lomefloxacin.
Zhao
M
M
The 302nd Hospital of the PLA, Beijing 100039.
Jiang
S
S
Wang
R
R
D000890:Anti-Infective Agents / Q000494:pharmacology* / Q000627:therapeutic use; D004405:Dysentery, Bacillary / Q000188:drug therapy*; D004926:Escherichia coli / Q000187:drug effects; D016576:Fleroxacin / Q000494:pharmacology* / Q000627:therapeutic use; D024841:Fluoroquinolones / Q000494:pharmacology* / Q000627:therapeutic use; D006801:Humans; D007711:Klebsiella pneumoniae / Q000187:drug effects; D008826:Microbial Sensitivity Tests; D015363:Quinolones / Q000494:pharmacology* / Q000627:therapeutic use; D015610:Serum Bactericidal Test; D012762:Shigella dysenteriae / Q000187:drug effects; D013211:Staphylococcus aureus / Q000187:drug effects
D000890:Anti-Infective Agents; D024841:Fluoroquinolones; D015363:Quinolones; C053091:lomefloxacin; D016576:Fleroxacin