Abstract：
:During the last few years, insufficient efficacy of currently recommended antimicrobial agents has been observed, mainly in the case of glycopeptides, during the treatment of infections due to methicillin-resistant Staphylococcus aureus, even if these isolates show MIC values within the susceptible range. The phenomena associated with this observation are tolerance (a genetic event in which a bactericidal antibiotic fails to kill a bacterial population), persistence (a non-inherited and transient phenotypic phenomenon in which a bacterial subpopulation -0.1%-10%- survive lethal antimicrobial concentrations irrespective of the mechanisms of action) and heteroresistance (an epigenetic event in which less susceptible isogenic subpopulations are recovered when the entire population is challenged with concentrations exceeding MIC values). New antimicrobials, including daptomycin, are less affected by these phenomena and should be considered as the treatment of choice when these events are demonstrated or suspected.
journal_name
Med Clin (Barc)journal_title
Medicina clinicaauthors
Morosini MI,Cantón Rdoi
10.1016/S0025-7753(10)70036-1subject
Has Abstractpub_date
2010-12-01 00:00:00pages
16-22eissn
0025-7753issn
1578-8989pii
S0025-7753(10)70036-1journal_volume
135 Suppl 3pub_type
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