Publication details

STUDY OF VARIOUS PARAMETERS THAT INFLUENCE THE CONTENT OF EXHALED BREATH CONDENSATE USED IN THE DIAGNOSIS OF GASTROESOPHAGEAL REFLUX DISEASE

Authors

GREGUŠ Michal ĎURČ Pavol LAČNÁ Júlia FORET František KUBÁŇ Petr

Year of publication 2018
Type Article in Periodical
Magazine / Source HUNGARIAN JOURNAL OF INDUSTRY AND CHEMISTRY
MU Faculty or unit

Central European Institute of Technology

Citation
Doi http://dx.doi.org/10.1515/hjic-2018-0007
Keywords capillary electrophoresis; exhaled breath condensate; ionic analysis; pH; gastroesophageal reflux disease
Description In this work, various parameters that influence the ionic content and pH of exhaled breath condensate in terms of the non-invasive diagnosis of gastroesophageal reflux disease were studied. Exhaled breath condensate samples were collected using a miniature and inexpensive sampling device. Capillary electrophoresis with contactless conductometric detection was used to monitor the ionic content of exhaled breath condensate. Background electrolyte composed of 20 mM of 2-(N-Morpholino)ethanesulfonic acid, 20 mM of L-Histidine, 2 mM of 18-Crown-6 and 30 mu M of cetyltrimethylammonium bromide facilitated the rapid separation of anions and cations, both in less than 2 minutes. The possibility of contamination of the exhaled breath condensate by saliva is discussed in detail. The day-to-day repeatability (n=5) of the ionic content and pH of the exhaled breath condensate was studied and was satisfactory, reflecting mainly the physiological variability.
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