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Reduced expression of PBP-2A by neonatal mecA-positive coagulase-negative staphylococci (CoNS) blood isolates: -lactams are useful first-line agents for the treatment of neonatal CoNS sepsis, restricting the use of vancomycin
Author(s) -
A. Fleer,
Marieke A. C. Hemels,
Armand Paauw,
Tannette G. Krediet
Publication year - 2012
Publication title -
journal of antimicrobial chemotherapy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.124
H-Index - 194
eISSN - 1460-2091
pISSN - 0305-7453
DOI - 10.1093/jac/dks092
Subject(s) - cons , microbiology and biotechnology , coagulase , penicillin binding proteins , sccmec , neonatal sepsis , penicillin , antibiotics , biology , carriage , cefazolin , sepsis , staphylococcus , medicine , staphylococcus aureus , bacteria , methicillin resistant staphylococcus aureus , immunology , genetics , pathology , computer science , programming language
Vancomycin use for neonatal coagulase-negative staphylococci (CoNS) sepsis is based on a high CoNS carriage rate of mecA, encoding penicillin-binding protein (PBP)-2a, with low affinity for, and associated with resistance to, β-lactam antibiotics. The relationship between mecA gene carriage, phenotypic expression of the gene by PBP-2a production and in vitro resistance to the β-lactam antibiotics oxacillin, cefazolin and amoxicillin/clavulanate was determined for 85 CoNS blood isolates randomly obtained from our collection of isolates from neonates with CoNS sepsis.

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