SourceJournal of Breath Research, 9, 2, (2015), pp. 027102
Article / Letter to editor
Display more detailsDisplay less details
Paediatrics - OUD tm 2017
Molecular and Laser Physics
Journal of Breath Research
SubjectRadboudumc 4: lnfectious Diseases and Global Health RIHS: Radboud Institute for Health Sciences
We present the real-time monitoring of hydrogen cyanide (HCN) production from Pseudomonas aeruginosa (P. aeruginosa) strains in vitro, using laser-based photoacoustic spectroscopy. Simultaneously, the production of ammonia (NH3) was measured, and the influence of different factors (e.g. the medium, temperature and antibiotics treatment) was assessed. Both reference strains and clinical isolates of patients with CF were studied, and compared to other pathogens commonly present in lungs/airways of CF patients. Hydrogen cyanide production starts to rise as soon as P. aeruginosa bacteria reach the stationary phase ((9.0-9.5) x 10(9) colony forming units, CFUs), up to concentrations of 14.5 microliters per hour (microl h(-1)). Different strains of P. aeruginosa produced HCN to varying degrees, and addition of tobramycin strongly reduced HCN production within 2 h from application. Burkholderia cepacia also produced HCN (up to 0.35microl h(-1) in 9.0 x 10(9) CFU) while other pathogens (Aspergillus fumigatus, Stenotrophomonas maltophilia, Mycobacterium abscessus) did not produce detectable levels. Our study reveals for the first time a broad overview of the dynamics of the HCN production in vitro.
This item appears in the following Collection(s)
- Academic publications 
- Faculty of Medical Sciences 
- Faculty of Science 
Upload full text
Use your RU credentials (u/z-number and password) to log in with SURFconext to upload a file for processing by the repository team.