Activity of Host Antimicrobials against Multidrug-Resistant Acinetobacter baumannii Acquiring Colistin Resistance through Loss of Lipopolysaccharide

作者:Garcia Quintanilla Meritxell; Pulido Marina R; Moreno Martinez Patricia; Martin Pena Reyes; Lopez Rojas Rafael; Pachon Jeronimo; McConnell Michael J*
来源:Antimicrobial Agents and Chemotherapy, 2014, 58(5): 2972-2975.
DOI:10.1128/AAC.02642-13

摘要

Acinetobacter baumannii can acquire resistance to the cationic peptide antibiotic colistin through complete loss of lipopolysaccharide (LPS) expression. The activities of the host cationic antimicrobials LL-37 and human lysozyme against multidrug-resistant clinical isolates of A. baumannii that acquired colistin resistance through lipopolysaccharide loss were characterized. We demonstrate that LL-37 has activity against strains lacking lipopolysaccharide that is similar to that of their colistin-sensitive parent strains, whereas human lysozyme has increased activity against colistin-resistant strains lacking LPS.

  • 出版日期2014-5