期刊
DIAGNOSTIC MICROBIOLOGY AND INFECTIOUS DISEASE
卷 50, 期 2, 页码 125-130出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.diagmicrobio.2004.06.014
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We examined the activity of arbekacin, daptomycin, tigecycline, and vancomycin against various Staphylococci isolates with glycopeptide-intermediate (n = 25) and heterogeneous susceptibilities (n = 22) (GISS and hGISS). The minimum inhibitory concentrations (MIC) of each antimicrobial was evaluated in time-kill experiments by using 4 randomly selected GISS isolates tested at 2 and 4 times their respective MIC. The MIC90 mug/mL ranges for arbekacin, daptomycin, tigecycline, and vancomycin were 2 (0.25-4), 1 (0.0625-2), 0.5 (0.0625-2), and 8 (4-8), respectively. Time kill at 2 times the MIC demonstrated a mean log(10) colony forming units (CFU)/mL change of -2.98 +/- 0.708, - 3.6 +/- 0.509, - 2.48 +/- 0.647, and + 1.14 +/- 0.1 arbekacin, daptomycin, tigecycline, and vancomycin, respectively. At 4 times the MIC, significant activity for all compounds was noted with a log(10) CFU/mL decrease range from 3.68 to 2.74 - 0.66. Overall, all the antimicrobials tested (with the exception of vancomycin) exhibited significant in vitro activity against GISS. These compounds may offer therapeutic options for the treatment of GISS. (C) 2004 Elsevier Inc. All rights reserved.
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