Abstract:
:Antibiotic-loaded acrylic bone cements (ALABC) spacers are routinely used in the treatment of prosthetic joint infections. The objectives of our study were to evaluate different ALABC for elution kinetics, thermal stability, and mechanical properties. A 10 or 20% mixture (w/w) beads of medium viscosity bone cement (DePuy, Inc) and vancomycin (VAN), gentamycin (GM), daptomycin (DAP), moxifloxacin (MOX), rifampicin (RIF), cefotaxime (CTX), cefepime (FEP), amoxicillin clavulanate (AmC), ampicillin (AMP), meropenem (MER), and ertapenem (ERT) were formed and placed into wells filled with phosphate-buffered saline. Antibiotic concentrations were determined using high-performance liquid chromatography. Antimicrobial activity was tested against Micrococcus luteus ATCC 9341 or Escherichia coli ATCC 25922. AmC, AMP, and FEP concentration rapidly decreased after day 2, being almost undetectable at day 4. Sustained and high elution rates were observed with VAN, GM, MOX, and RIF for the 30-day duration of the experiment. DAP, MER, ERT, and CTX elution rates constantly decreased from day 4. All antibiotics tested retained antimicrobial activity proving thermal stability. Mechanical properties of ALABC were maintained except when RIF was used.
journal_name
Diagn Microbiol Infect Disjournal_title
Diagnostic microbiology and infectious diseaseauthors
Gálvez-López R,Peña-Monje A,Antelo-Lorenzo R,Guardia-Olmedo J,Moliz J,Hernández-Quero J,Parra-Ruiz Jdoi
10.1016/j.diagmicrobio.2013.09.014subject
Has Abstractpub_date
2014-01-01 00:00:00pages
70-4issue
1eissn
0732-8893issn
1879-0070pii
S0732-8893(13)00535-Xjournal_volume
78pub_type
杂志文章abstract::Lomefloxacin is a promising new difluorinated quinolone with good antimicrobial activity and favorable pharmacokinetic properties. The in vitro activity of lomefloxacin was compared to other quinolones, expanded spectrum beta-lactams, and gentamicin. The lomefloxacin MIC90 against multiply resistant strains of P. aeru...
journal_title:Diagnostic microbiology and infectious disease
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