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  • Title: [Comparative studies on activities of antimicrobial agents against causative organisms isolated from patients with urinary tract infections (1998). III. Secular changes in susceptibility].
    Author: Kumamoto Y, Tsukamoto T, Hirose T, Matsukawa M, Kunishima Y, Matsuda S, Sato S, Ogiwara M, Ishibashi K, Fujime M, Fujita K, Shigeta S, Watanabe J, Igari J, Yoshida H, Imafuku Y, Oguri T, Murai M, Yamaguchi K, Matsumoto T, Kashitani F, Watanabe K, Kobayashi Y, Uchida H, Ooe H, Nishikawa M, Kohno S, Oka T, Takano Y, Miyagawa Y, Miyazaki Y, Izumikawa K, Yamaguchi T, Mochida C, Furuhama T.
    Journal: Jpn J Antibiot; 2000 May; 53(5):299-386. PubMed ID: 10923285.
    Abstract:
    Susceptibilities to various antimicrobial agents were examined for Enterococcus faecalis, Staphylococcus aureus, Echerichia coli, Klebsiella spp. and Pseudomonas aeruginosa that were isolated from patients with urinary tract infections (UTIs) in 9 hospitals during June 1998 to May 1999, and the results were compared with those obtained during the same period from 1990 to 1997 in uncomplicated UTIs and complicated UTIs. Among E. faecalis strains, those with low susceptibilities to almost drugs have increased in the latest period. All 5 S. aureus strains isolated from uncomplicated UTIs were the most susceptible to gentamicin (GM). Over 50% of S. aureus strains isolated from complicated UTIs were susceptible to GM, and on the contrary the resistant strains have increased with the MIC90 of 256 micrograms/ml or above. Among S. aureus strains isolated from complicated UTIs, those with low susceptibilities to arbekacin (ABK) have increased in the latest period compared to those during period of 1996-1997, and the MIC90s of them have changed into the lower state from 1 microgram/ml in 1996-1997 to 4 micrograms/ml in 1998. S. aureus strains have continued high susceptibilities to vancomycin (VCM). The susceptibilities to minocycline (MINO) of E. coli showed MIC90: 4 micrograms/ml in 1997, but those have returned in the latest period in uncomplicated UTIs. The MIC90s of ofloxacin (OFLX) to E. coli isolated from uncomplicated and complicated UTIs have been lower 2-3 classes in the latest period than those in 1997. Among Klebsiella spp. strains isolated from uncomplicated UTIs, those with low susceptibilities to almost cephems had increased in 1997, but few of them were detected in the latest study. The sensitive strains of P. aeruginosa to almost drugs have increased during the latest period. The MIC50s of cefozopran (CZOP) and OFLX against P. aeruginosa were the best in our history. The sensitive strains of P. aeruginosa to ceftazidime (CAZ) have increased and its percentage was 30%. Piperacilline (PIPC), cefoperazone (CPZ), GM and OFLX resistant P. aeruginosa strains have increased in the latest period.
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