Clostridium difficile ciprofloxacin, ofloxacin, norfloxacin Bifidobacterium Lactobacillus Lactobacillus Bacteroides fragilis B. fragilis C. difficile

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Transcription:

Clostridium difficile ciprofloxacin, ofloxacin, norfloxacin Bifidobacterium Lactobacillus Lactobacillus Bacteroides fragilis B. fragilis C. difficile Key words: temafloxacin, TA-167, Bacteroides fragilis, Clostridium difficile Bacteroides fragilis group Clostridium difficile bivia, Prevotella intermedia, Port'hyromonas gingivalis

CHEMOTHERAPY DEC. 1993 bivia, Fusobacterium vanum C. sordellii Bifidobacterium Lactobacillus B. fragilis group Prevotella Clostridium C. difficle Table 1. Antibacterial spectrum of temafloxacin against gram-negative anaerobic bacteria compared with those of other agents Inoculum size: 106 CFU/ml

Table 2. Antibacterial spectrum of temafloxacin against gram-positive anaerobic bacteria compared with those of other agents Inoculum size: 106 CFU/ml Table 3. Antibacterial spectrum of temafloxacin against gram-positive anaerobic bacteria compared with those of other agents Inoculum size: 106 CFU/ml

CHEMOTHERAPY DEC. 1993 Clostridium Mobituncus spp,, C. vagina., PePtostrePto. Peplostreptococcus anaerobius B. fragilis group coccus magnus, Clostridium perfringens, Mobiluncus spp. B. fragilis Bacteroides ovalus Prevotella intermedia Peptosireptococcus 3. B. fragilis Table 4-1. Antimicrobial activity of temafloxacin and three other quinolones against clinical isolates of gram-negative anaerobic bacteria

VOL.41 5-5 Table 4-2. Antimicrobial activity of temafloxacin and three other quinolones against clinical isolates of gram-positive anaerobic bacteria and Gardnerella vaginalis Temafloxacin (MIC: 12.5 Ag/ml) Ciprofloxacin (MIC: 25 Ag/ml) Fig. 1. Bactericidal activity of temafloxacin and ciprofloxacin against Bacteroides fragilis GAI 5562.

CHEMOTHERAPY DEC. 1993 Table 5. Appearance of Clostridium difficile in murine cecum contents after 5 days of dosing with temafloxacin, ofloxacin, cefixime and cefotaxime All mice (30 }1g) received antimicrobials at a dose of 100 mg/kg once a day for 5 days. Number of mice.

VOL.41 S-5 motherapy 40 (S-2): 30 `36, 1992 8) Kato N, Miyauchi M, Muto Y, Watanabe K and Ueno K: Emergence of fluoroquinolone resistance in Bacteraides fragilis accompanied by resistance to Ĉ-lactam antibiotics. Antimicrob Agent Chemother 32: 1437 `1438, 1988 Activity of temafloxacin, a novel fluoroquinolone, against anaerobic bacteria Naoki Kato, Haru Kato, Yasunori Tanaka, Kaori Tanaka, Kunitomo Watanabe and Kazue Ueno Institute of Anaerobic Bacteriology, Gifu University School of Medicine, 40 Tukasa-machi, Gifu 500, Japan The in vitro activity of temafloxacin(tmfx), a new fluoroquinolone, was evaluated against anaerobic bacteria, and the inducibility of Clostridium difficile overgrowth in murine cecum by 5- day administration of temafloxacin was also studied. The antimicrobial activity of ciprofloxacin, ofloxacin and norfloxacin were compared with that of TMFX. TMFX showed a broad spectrum, and was the most active against 45 reference strains (44 species) tested, although some species of genus Lactobacillus had low susceptibility to this compound. Against all recent clinical isolates tested, TMFX was the most active among antimicrobial agents used; 90% of Bacteroides fragilis isolates were inhibited at 3.13 Đg/ml of the compound. TMFX showed strong bactericidal activity against B. fragilis. A 5-day administration of TMFX did not provoke the overgrowth of C. difficile in murine cecum.