期刊
INTERNATIONAL JOURNAL OF MEDICAL MICROBIOLOGY
卷 300, 期 8, 页码 549-556出版社
ELSEVIER GMBH, URBAN & FISCHER VERLAG
DOI: 10.1016/j.ijmm.2010.08.007
关键词
Pseudamonas aeruginosa; Anaerobic physiology; Antibiotic tolerance; Cystic fibrosis; Denitrification; Arginine fermentation; Pyruvate fermentation; NO-signaling; Universal stress protein
资金
- Mukoviszidose e.V.
- Deutsche Forschungsgemeinschaft (DFG)
During chronic infection of the cystic fibrosis (CF) lung, Pseudomonas aeruginosa grows and persists in a microaerobic to anaerobic environment. P. aeruginosa is well adapted to thrive under such conditions and contains multiple enzyme systems for energy generation under oxygen-restricted or even anaerobic conditions. Recent data confirm a heterogeneous environment in the CF lung and indicate that P. aeruginosa induces enzyme systems for microaerobic growth but also denitrification and fermentative pathways. Moreover, stress response systems as universal stress proteins enhance survival under anaerobic energy starvation conditions. Growth in these oxygen-limited environments induces a drastic physiological change in P. aeruginosa, like increased alginate production and alterations in the outer membrane, which contribute to an increased antibiotic tolerance. (C) 2010 Elsevier GmbH. All rights reserved.
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