Redox warfare between airway epithelial cells and Pseudomonas: dual oxidase versus pyocyanin.
Redox warfare between airway epithelial cells and Pseudomonas: dual oxidase versus pyocyanin.
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DOI:
10.1007/s12026-008-8071-8
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发表时间:
2009
影响因子:
4.4
通讯作者:
Leto, Thomas L.
中科院分区:
文献类型:
--
作者:
Rada, Balazs;Leto, Thomas L.
关键词:
The importance of reactive oxygen species-dependent microbial killing by the phagocytic cell NADPH oxidase has been appreciated for some time, although only recently has an appreciation developed for the partnership of lactoperoxidase with related dual oxidases (Duox) within secretions of the airway surface layer. This system produces mild oxidants designed for extracellular killing that are effective against several airway pathogens, including Staphylococcus aureus, Bulkhoderia cepacia, and Pseudononas aeruginosa. Establishment of chronic pseudomonas infections involves adaptations to resist oxidant-dependent killing by expression of a redox-active virulence factor, pyocyanin, that competitively inhibits epithelial Duox activity by consuming intracellular NADPH and producing superoxide, thereby inflicting oxidative stress on the host.
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