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Comparative In vitro activities of daptomycin and vancomycin against resistant gram-positive pathogens. 2000

D R Snydman, and N V Jacobus, and L A McDermott, and J R Lonks, and J M Boyce
New England Medical Center, Boston, Massachusetts 02111, USA. dsnydman@lifespan.org

The in vitro activity of daptomycin against 224 current gram-positive clinical isolates including vancomycin-resistant Enterococcus faecium (VREF), methicillin-resistant Staphylococcus aureus (MRSA), methicillin-resistant Staphylococcus spp. (MRSS), and penicillin-resistant Streptococcus pneumoniae (PRSP) was evaluated. The MICs at which 90% of isolates are inhibited for daptomycin and vancomycin, respectively, were as follows: MRSA, 1 and 2 microg/ml; MRSS, 1 and 4 microg/ml; PRSP, 1 and 0.5 microg/ml; and VREF, 2 and >64 microg/ml. Daptomycin was bactericidal against 82% of 17 VREF isolates. The antibacterial activity of daptomycin was strongly dependent on the calcium concentration of the medium. Daptomycin was active against all gram-positive cocci tested.

UI MeSH Term Description Entries
D008826 Microbial Sensitivity Tests Any tests that demonstrate the relative efficacy of different chemotherapeutic agents against specific microorganisms (i.e., bacteria, fungi, viruses). Bacterial Sensitivity Tests,Drug Sensitivity Assay, Microbial,Minimum Inhibitory Concentration,Antibacterial Susceptibility Breakpoint Determination,Antibiogram,Antimicrobial Susceptibility Breakpoint Determination,Bacterial Sensitivity Test,Breakpoint Determination, Antibacterial Susceptibility,Breakpoint Determination, Antimicrobial Susceptibility,Fungal Drug Sensitivity Tests,Fungus Drug Sensitivity Tests,Sensitivity Test, Bacterial,Sensitivity Tests, Bacterial,Test, Bacterial Sensitivity,Tests, Bacterial Sensitivity,Viral Drug Sensitivity Tests,Virus Drug Sensitivity Tests,Antibiograms,Concentration, Minimum Inhibitory,Concentrations, Minimum Inhibitory,Inhibitory Concentration, Minimum,Inhibitory Concentrations, Minimum,Microbial Sensitivity Test,Minimum Inhibitory Concentrations,Sensitivity Test, Microbial,Sensitivity Tests, Microbial,Test, Microbial Sensitivity,Tests, Microbial Sensitivity
D006094 Gram-Positive Bacteria Bacteria which retain the crystal violet stain when treated by Gram's method. Gram Positive Bacteria
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013997 Time Factors Elements of limited time intervals, contributing to particular results or situations. Time Series,Factor, Time,Time Factor
D014640 Vancomycin Antibacterial obtained from Streptomyces orientalis. It is a glycopeptide related to RISTOCETIN that inhibits bacterial cell wall assembly and is toxic to kidneys and the inner ear. AB-Vancomycin,Diatracin,VANCO-cell,Vanco Azupharma,Vanco-saar,Vancocin,Vancocin HCl,Vancocine,Vancomicina Abbott,Vancomicina Chiesi,Vancomicina Combino Phar,Vancomicina Norman,Vancomycin Hexal,Vancomycin Hydrochloride,Vancomycin Lilly,Vancomycin Phosphate (1:2),Vancomycin Phosphate (1:2), Decahydrate,Vancomycin Sulfate,Vancomycin-ratiopharm,Vancomycine Dakota,Hydrochloride, Vancomycin,Sulfate, Vancomycin
D015169 Colony Count, Microbial Enumeration by direct count of viable, isolated bacterial, archaeal, or fungal CELLS or SPORES capable of growth on solid CULTURE MEDIA. The method is used routinely by environmental microbiologists for quantifying organisms in AIR; FOOD; and WATER; by clinicians for measuring patients' microbial load; and in antimicrobial drug testing. Agar Dilution Count,Colony-Forming Units Assay, Microbial,Fungal Count,Pour Plate Count,Spore Count,Spread Plate Count,Streak Plate Count,Colony Forming Units Assay, Microbial,Colony Forming Units Assays, Microbial,Agar Dilution Counts,Colony Counts, Microbial,Count, Agar Dilution,Count, Fungal,Count, Microbial Colony,Count, Pour Plate,Count, Spore,Count, Spread Plate,Count, Streak Plate,Counts, Agar Dilution,Counts, Fungal,Counts, Microbial Colony,Counts, Pour Plate,Counts, Spore,Counts, Spread Plate,Counts, Streak Plate,Dilution Count, Agar,Dilution Counts, Agar,Fungal Counts,Microbial Colony Count,Microbial Colony Counts,Pour Plate Counts,Spore Counts,Spread Plate Counts,Streak Plate Counts
D016106 Methicillin Resistance Non-susceptibility of a microbe to the action of METHICILLIN, a semi-synthetic penicillin derivative. Methicillin-Resistant,Methicillin Resistant,Resistance, Methicillin
D017576 Daptomycin A cyclic lipopeptide antibiotic that inhibits GRAM-POSITIVE BACTERIA. Cubicin,Daptomycin, 9-L beta-Aspartic Acid,Deptomycin,LY-146032,Daptomycin, 9 L beta Aspartic Acid,LY 146032,LY146032

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