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  • Title: [Comparative studies on activities of antimicrobial agents against causative organisms isolated from urinary tract infections (1988). I. Susceptibility distribution].
    Author: Kosakai N, Kumamoto Y, Hirose T, Tanaka N, Hikichi Y, Shigeta S, Shiraiwa Y, Kameoka H, Yoshida H, Ogata M.
    Journal: Jpn J Antibiot; 1992 Sep; 45(9):1071-102. PubMed ID: 1433906.
    Abstract:
    Isolation frequencies and sensitivities to antibacterial and antibiotic agents were investigated on 801 bacterial strains isolated from patients with urinary tract infections in 9 hospitals during the period of June to November 1988. Of the above total bacterial population, Gram-positive bacteria accounted for 29.3% and a majority of them were Enterococcus spp. Gram-negative bacteria accounted for 70.7% and most of them were Escherichia coli. 1. Enterococcus faecalis: Vancomycin was most active with its MIC90 < or = 0.78 microgram/ml. Ampicillin, piperacillin, ofloxacin (OFLX), ciprofloxacin (CPFX) and imipenem (IPM) were also active. 2. Staphylococcus aureus: Arbekacin and minocycline were most active with their MIC90s 0.39 microgram/ml and 1.56 micrograms/ml, respectively. Among penicillins, dicloxacillin was the most active. Activities of cephems were considerably lower. 3. E. coli: Most of the agents were tested active. Particularly the second and third generation cephems were active in a range of < or = 0.10-0.20 microgram/ml. Carumonam (CRMN), IPM, OFLX and CPFX were also active with MIC90s < or = 0.10 microgram/ml. 4. Klebsiella pneumoniae CRMN and IPM were highly active. Penicillins generally showed lower activities. Cephems and new quinolones had high activities with their MIC90s in a range of 0.39-0.78 microgram/ml. 5. Proteus mirabilis: The third generation cephems were active with their MIC90s in a range of < or = 0.10-0.20 microgram/ml. CRMN, OFLX and CPFX were also active with their MIC90s < or = 0.10 microgram/ml, 0.39 microgram/ml and 0.20 microgram/ml, respectively. 6. Pseudomonas aeruginosa: IPM and tobramycin were active with their MIC90s 1.56 micrograms/ml and 3.13 micrograms/ml, respectively. CRMN and new quinolones showed MIC80s of 25-100 micrograms/ml. Most of penicillins and cephems were not active. 7. Other Gram-negative rods: Against Citrobacter freundii, Enterobacter cloacae and Serratia marcescens, IPM, CPFX and OFLX were active. Penicillins and cephems were not so active. CRMN was active against S. marcescens with its MIC80 at 6.25 micrograms/ml.
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