[Study of the susceptibility of Staphylococcus sp. and Enterococcus sp. to teicoplanin and vancomycin].
OBJECTIVE
The study was performed in order to evaluate the susceptibility of Enterococcus and Staphylococcus to teicoplanin and vancomycin.


METHODS
150 Enterococcus strains and 450 Staphylococcus strains (298 Staphylococcus aureus and 152 negative coagulase strains) isolated in three Brazilian hospitals were studied. The MICs were determined using teicoplanin and vancomycin E Test strips. The range of the antimicrobial concentration in each strip went from 256 mcg/mL to 0.016 mcg/mL. Diffusion tests using disks impregnated with 10 mcg of teicoplanin and 30 mcg of vancomycin were also performed.


RESULTS
All the 298 Staphylococcus aureus strains were susceptible to the two antimicrobials. Three of the 152 negative coagulase strains presented intermediate susceptibility to teicoplanin (MICs between 8 and 16 mcg/mL). Four of the 150 Enterococcus strains presented intermediate susceptibility to vancomycin but were totally susceptible to teicoplanin.


CONCLUSIONS
According to these results teicoplanin and vancomycin are good therapeutical options in the treatment of staphylococcal and enterococcal infections.
Mimica
I
I
Faculdade de Ciências Médicas da Santa Casa de São Paulo.
Mendes
C M
CM
Mimica
L
L
Oplustil
C
C
Pignatari
A C
AC
Sader
H
H
D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D016983:Enterococcus / Q000187:drug effects*; D008826:Microbial Sensitivity Tests; D013210:Staphylococcus / Q000187:drug effects*; D017334:Teicoplanin / Q000494:pharmacology*; D014640:Vancomycin / Q000494:pharmacology*
D000900:Anti-Bacterial Agents; D017334:Teicoplanin; D014640:Vancomycin