Journal
ANTIMICROBIAL AGENTS AND CHEMOTHERAPY
Volume 61, Issue 3, Pages -Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/AAC.00598-16
Keywords
Acinetobacter; ESKAPE; catalase; fitness; mass spectrometry; mouse model; serial isolation; virulence
Categories
Funding
- Military Infectious Diseases Research Program (MIDRP)
- Defense Medical Research and Development Program (DMRDP)
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The loss of fitness in colistin-resistant (CR) Acinetobacter baumannii was investigated using longitudinal isolates from the same patient. Early CR isolates were outcompeted by late CR isolates for growth in broth and survival in the lungs of mice. Fitness loss was associated with an increased susceptibility to oxidative stress since early CR strains had reduced in vitro survival in the presence of hydrogen peroxide and decreased catalase activity compared to that of late CR and colistin-susceptible (CS) strains.
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