Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7612806 | Journal of Chromatography A | 2014 | 6 Pages |
Abstract
A novel approach for diagnosis of cystic fibrosis is presented. A simple and fast procedure to obtain sweat sample was developed. It consists of repeatedly wiping the skin of the forearm with deionized water moisturized cotton swab and extraction in 1Â mL of deionized water. Double opposite end injection capillary electrophoresis with contactless conductometric detection is used for the analysis of the extract. Chloride, sodium and potassium as the three target ions that participate in the ion transfer across the cellular membranes, and are affected by CF, are simultaneously determined in approximately 3Â min in a background electrolyte containing 20Â mM 2-(N-morpholino)ethanesulfonic acid, 20Â mM l-histidine and 2Â mM 18-crown-6. By using the target ion ratios rather than the concentrations of each individual ion combined with principal component analysis, the diagnosis of CF can be made more accurately and greatly reduce the number of false positive or negative results as is often the case when single ion (chloride) is analyzed.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Petr KubáÅ, Michal GreguÅ¡, Eva Pokojová, Jana SkÅiÄková, FrantiÅ¡ek Foret,