SERS spectroscopy for detection of hydrogen cyanide in breath from children colonised with P. aeruginosa. Issue 39 (27th September 2017)

• Record Type: Journal Article
• Authors: Lauridsen, Rikke Kragh; Skou, Peter Bæk; Rindzevicius, Tomas; Wu, Kaiyu; Molin, Søren; Engelsen, Søren Balling; Nielsen, Kim Gjerum; Johansen, Helle Krogh; Boisen, Anja
• Is Part Of: Analytical methods. Volume 9:Issue 39(2017)
• Page Start: 5757
• Page End: 5762
• Publication Date: 2017-09-27
• Subjects: Chemistry, Analytic -- Periodicals; Analytical biochemistry -- Periodicals; Chemical laboratories -- Standards -- Periodicals; 543.1905
• DOI: 10.1039/c7ay01693j
• Languages: English
• ISSNs: 1759-9660

Abstract

Abstract : There is a need for a fast and non-invasive tool to detect Pseudomonas aeruginosa airway colonisation in cystic fibrosis (CF) patients unable to expectorate. Abstract : There is a need for a fast and non-invasive tool to detect Pseudomonas aeruginosa airway colonisation in cystic fibrosis (CF) patients unable to expectorate. Fifty CF children and 19 controls aged 5–17 years were included in the feasibility study. A surface-enhanced Raman spectroscopy (SERS) nanochip optimised for detection of trace amounts of the P. aeruginosa biomarker hydrogen cyanide (HCN) was mounted inside a Tedlar bag, which the patient breathed into. The SERS chip was then analysed in a Raman spectrometer, investigating the CN peak at 2131 cm −1 and correlated with sputum cultures. One new P. aeruginosa colonisation occurred during the trial period. The CN peak intensity was enhanced in this sample in contrast to the subject's 3 other samples. Three additional patients had intense CN SERS signals from their breath, but no P. aeruginosa was cultured from their sputum. It is concluded that SERS spectroscopy can be developed into an easy to use hypersensitive clinical prescreening method for detection of HCN in human breath.