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J Cyst Fibros. 2013 Dec;12(6):817-20. doi: 10.1016/j.jcf.2013.01.008. Epub 2013 Mar 6.

Inhaled nitric oxide decreases the bacterial load in a rat model of Pseudomonas aeruginosa pneumonia.

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  • 1Division of Respiratory Medicine, University of British Columbia, Vancouver, BC, Canada; Division of Infectious Diseases, University of British Columbia, Vancouver, BC, Canada. Electronic address:


Gaseous nitric oxide (NO) is bactericidal in vitro. However whether and how it can be used for the treatment of bacterial lung infections in patients with cystic fibrosis is unclear. Here we assessed the bactericidal effect of intermittently inhaled 160 ppm NO for 30 min every 4 h in a Pseudomonas aeruginosa pneumonia model in rats. NO significantly reduced P. aeruginosa colony count in rat lungs but did not affect neutrophil myeloperoxidase function methemoglobin percentage nor plasma nitrite/nitrate levels. This regimen warrants exploration in infected patients with cystic fibrosis.

Copyright © 2013 European Cystic Fibrosis Society. Published by Elsevier B.V. All rights reserved.


Cystic fibrosis; Inhalation; Myeloperoxidase; Nitric oxide; P. aeruginosa pneumonia

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