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and in the mouse infection model and is associated with induction of reactive oxygen species (ROS) generation. In addition, VC inhibited biofilm formation of CR-hvKP through suppressing the production of exopolysaccharide (EPS). In addition, VC acted as an efflux pump inhibitor at subminimum inhibitory concentration (sub-MIC) to disrupt transportation of EPS and capsular polysaccharide to bacterial cell surface, thereby further inhibiting biofilm and capsule formation. Furthermore, virulence-associated genes in CR-hvKP exposed to sub-MIC of VC were downregulated. Our findings indicated VC could be an effective and safe therapeutic agent to treat CR-hvKP infections in urgent cases when all current treatment options fail.
Xu et al. (Tue,) studied this question.