Antimicrobial Peptoids Are Effective against Pseudomonas aeruginosa Biofilms

Abstract
The resistance of biofilms to conventional antibiotics complicates the treatment of chronic cystic fibrosis (CF). We investigated the effects of peptoids, peptides, and conventional antibiotics on the biomass and cell viability within Pseudomonas aeruginosa biofilms. At their MICs, peptoids 1 and 1-C13 4mer caused maximum reductions in biomass and cell viability, respectively. These results suggest that peptoids of this class could be worth exploring for the treatment of pulmonary infections occurring in CF patients.