The bacterial strains isolated from 565 patients diagnosed as having urinary tract infections (UTIs) in 14 institutions in Japan were collected between August 2003 and July 2004. The susceptibilities of them to many kinds of antimicrobial agents were investigated. Of them, 701 strains were estimated as prophlogistic bacteria and used for the investigation. The strains consisted of 258 Gram-positive bacterial strains (36.8%) and 443 Gramnegative bacterial strains (63.2%).
Against
Staphylococcus aureus, vancomycin (VCM) showed the strongest activity and prevented the growth of all strains with 2μg/mL. Against
Streptococcus agalactiae, ampicillin (ABPC), cefozopran (CZOP), imipenem (IPM), and clarithromycin (CAM) showed a strong activity and the MIC
90 was 0.125μg/mL or less. Against
Enterococcus faecalis, VCM, ABPC, and IPM showed a strong antibacterial activity. The antibacterial activity of cephems to
Escherichia coli was generally good, and especially CZOP and cefpirome (CPR) showed the strongest activity (MIC
90: ≤0.125μg/mL). Quinolone resistant
E. coli [MIC of ciprofloxacin (CPFX): ≥4μg/mL] was detected at frequency of 15.7%, which was higher than that in the last year. Against
Klebsiella pneumoniae, meropenem (MEPM) showed the strongest activity and next, the antibacterial activity of CRMN and CZOP was good. The antibacterial activity of the other cephems, however, significantly decreased, compared with that evaluated in last year. Against
Serratia marcescens, MEPM had the strongest antibacterial activity. Against
Proteus mirabilis, MEPM and CRMN showed the strongest activity and prevented the growth of all strains with 0.125μg/mL or less. Nest, cefmenoxime (CMX), ceftazidime (CAZ), cefixime (CFIX), cefpodoxime (CPDX), CPR, CZOP, and cefditoren (CDTR) showed a strong activity. The antibacterial activity of the drugs to Pseudomonas aeruginosa was generally low, and MIC
90 of all the drugs was ranged from 32 to ≥256μg/mL except IPM and amikacin (AMK) having 16μg/mL. The antibacterial activity of CZOP was relatively good (MIC
50: 2μg/mL).
View full abstract