Effect of ertapenem protein binding on killing of bacteria

David E. Nix, Kathryn R. Matthias, Emily C. Ferguson

Research output: Contribution to journalArticlepeer-review

44 Scopus citations


The effect of protein binding on the antimicrobial activity of ertapenem was evaluated using the bacterial kill rate and concentration-response studies. Various proportions of human serum were utilized to determine the total and free-drug concentrations using a validated high-performance liquid chromatography assay. The MICs and kill curves were determined for test isolates of Enterobacter cloacae and Staphylococcus aureus at various percentages of human serum. The killing of bacteria was analyzed in relation to the free and total concentrations of ertapenem at various proportions of human serum. It was determined that unbound ertapenem was responsible for the antimicrobial activity against the test isolates.

Original languageEnglish (US)
Pages (from-to)3419-3424
Number of pages6
JournalAntimicrobial Agents and Chemotherapy
Issue number9
StatePublished - Sep 2004

ASJC Scopus subject areas

  • Pharmacology
  • Pharmacology (medical)
  • Infectious Diseases


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