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  • Title: [Comparative studies on activities of antimicrobial agents against causative organisms isolated from urinary tract infections (1993). I. Susceptibility distribution].
    Author: Kumamoto Y, Hirose T, Tanaka N, Hikichi Y, Shigeta S, Shiraiwa Y, Kameoka H, Yoshida H, Tazaki H, Iri H.
    Journal: Jpn J Antibiot; 1995 Nov; 48(11):1757-87. PubMed ID: 8558757.
    Abstract:
    The frequencies of isolation and susceptibilities to antimicrobial agents were investigated on 657 bacterial strains isolated from patients with urinary tract infections in 10 hospitals during the period of June 1993 to May 1994. Of the above total bacterial isolates, Gram-positive bacteria accounted for 28.3% and a majority of them were Enterococcus faecalis. Gram-negative bacteria accounted for 71.7% and most of them were Escherichia coli. 1. Enterococcus faecalis Ampicillin (ABPC), imipenem (IPM) and vancomycin (VCM) showed the highest activities against E. faecalis isolated from patients with urinary tract infections. The MIC90s of them were 2 micrograms/ml. Piperacillin (PIPC) was also active with the MIC90 of 8 micrograms/ml. The others were not so active with the MIC90s of 32 micrograms/ml or above. 2. Staphylococcus aureus including MRSA VCM showed the highest activities against S. aureus isolated from patients with urinary tract infections. Its MIC90 was 1 microgram/ml. Arbekacin (ABK) was also active with the MIC90 of 2 micrograms/ml. The others were not so active with the MIC90s of 32 micrograms/ml or above. 3. Staphylococcus epidermidis VCM showed the strongest activity against S. epidermidis isolated from patients with urinary tract infections. Its MIC90 was 1 microgram/ml. ABK was also active with the MIC90 of 4 micrograms/ml. The others except ABPC were not so active with the MIC90s of 32 micrograms/ml or above. 4. Streptococcus agalactiae Most of the agents were active against S. agalactiae isolated from patients with urinary tract infections. Penicillins, cephems, erythromycin (EM), and clindamycin (CLDM) showed the highest activities. The MIC90s of them were 0.25 microgram/ml or below. Amikacin (AMK) and minocycline (MINO) showed somewhat low activities with the MIC90s of 16 micrograms/ml. 5. Citrobacter freundii IPM showed the highest activities against C. freundii isolated from patients with urinary tract infections. Its MIC90 was 2 micrograms/ml. Cefozopran (CZOP) and gentamicin (GM) were also active with the MIC90s of 8 micrograms/ml. Penicillins and cephems generally were not so active. 6. Enterobacter cloacae IPM and GM showed the highest activities against E. cloacae. The MIC90s of them were 1 microgram/ml. CZOP and tosufloxacin (TFLX) were also active with the MIC90s of 8 micrograms/ml. Penicillins and cephems except CZOP showed lower activities with the MIC90s of 64 micrograms/ml or above. 7. Escherichia coli Most of antimicrobial agents were active against E. coli. Flomoxef (FMOX), CZOP, IPM, CPFX and TFLX showed the highest activities against E. coli. The MIC90s of them were 0.125 microgram/ml or below. Cefmenoxime (CMX), ceftazidime (CAZ), cefuzonam (CZON), latamoxef (LMOX), carumonam (CRMN), norfloxacin (NFLX) and ofloxacin (OFLX) were also active with the MIC90s of 0.25 microgram/ml. Penicillins and MINO were not so active with the MIC90s of 32 micrograms/ml or above. 8. Klebsiella pneumoniae CZOP, IPM and CRMN showed the highest activities against K. pneumoniae. The MIC90s of them were 0.125 microgram/ml or below. CAZ, CZON, CFIX, CPFX and TFLX were also active the MIC90s of 0.25 microgram/ml. Penicillins were not so active with the MIC90s of 128 micrograms/ml or above. 9. Proteus mirabilis P. mirabilis was susceptible to a majority of drugs. CMX, CAZ, CZON, LMOX, CFIX, CRMN and CPFX showed the highest activities against P. mirabilis isolated from patients with urinary tract infections. The MIC90s of them were 0.125 microgram/ml or below. MINO was not so active with the MIC90 of 256 micrograms/ml or above. 10. Pseudomonas aeruginosa Most of the agents were not so active against P. aeruginosa. IPM showed MIC90 of 8 micrograms/ml.
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