期刊
SEPARATIONS
卷 8, 期 12, 页码 -出版社
MDPI
DOI: 10.3390/separations8120234
关键词
cystic fibrosis; sweat sampling; skin-wash; capillary electrophoresis; contactless conductivity detection; ion ratio
资金
- Ministry of Health of the Czech Republic [NV18-08-00189]
- Czech Academy of Sciences
- [RVO: 68081715]
The newly developed skin-wash procedure can collect sufficient sweat specimens completely noninvasively in less than one minute, for the diagnosis of cystic fibrosis.
Sweat chloride analysis is one of the important approaches in cystic fibrosis diagnosis. The commonly used Macroduct method to acquire sweat samples is semi-invasive, time consuming and expensive. Furthermore, this method often fails to collect a sufficient amount of sweat in newborns due to the insufficient sweating rate. In this work, we present a novel, simple, 3D-printed sampling device that is used to collect sweat specimens completely noninvasively in less than one minute. The device has a flow-through channel adjacent to the skin surface, through which 500 mu L of deionized water is flushed and the spontaneously formed sweat on the skin in the channel area is washed into a plastic vial. The developed skin-wash procedure is a single step operation, is completely noninvasive and it always produces a sweat specimen. The ions from the skin-wash are subsequently analyzed by capillary electrophoresis with contactless conductivity detection and selected ion ratio (Cl-/K+) or ((Cl- + Na+)/K+) is used as a cut-off value to diagnose cystic fibrosis patients with sensitivity and specificity comparable to the conventional Macroduct method.
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