Szczegóły publikacji
Opis bibliograficzny
New ISE-based apparatus for $Na^{+}, K^{+}, Cl^{−}$, pH and transepithelial potential difference real-time simultaneous measurements of ion transport across epithelial cells monolayer-advantages and pitfalls / Mirosław Zając, Andrzej LEWENSTAM, Magdalena Stobiecka, Krzysztof Dołowy // Sensors [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 1424-8220. — 2019 — vol. 19 iss. 8 art. no. 1881, s. 1-13. — Wymagania systemowe: Adobe Reader. — Tryb dostępu: https://www.mdpi.com/1424-8220/19/8/1881/pdf [2019-06-24]. — Bibliogr. s. 11-13, Abstr. — A. Lewenstam - dod. afiliacja: Centre for Process Analytical Chemistry and Sensor Technology (ProSens), Johan Gadolin Process Chemistry Centre, Åbo Akademi University, Biskopsgatan
Autorzy (4)
- Zając Mirosław
- AGHLewenstam Andrzej
- Stobiecka Magdalena
- Dołowy Krzysztof
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 122455 |
|---|---|
| Data dodania do BaDAP | 2019-10-04 |
| DOI | 10.3390/s19081881 |
| Rok publikacji | 2019 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Sensors |
Abstract
Cystic Fibrosis (CF) is the most common fatal human genetic disease, which is caused by a defect in an anion channel protein (CFTR) that affects ion and water transport across the epithelium. We devised an apparatus to enable the measurement of concentration changes of sodium, potassium, chloride, pH, and transepithelial potential difference by means of ion-selective electrodes that were placed on both sides of a 16HBE14 sigma human bronchial epithelial cell line that was grown on a porous support. Using flat miniaturized ISE electrodes allows for reducing the medium volume adjacent to cells to approximately 20 L and detecting changes in ion concentrations that are caused by transport through the cell layer. In contrast to classic electrochemical measurements, in our experiments neither the calibration of electrodes nor the interpretation of results is simple. The calibration solutions might affect cell physiology, the medium composition might change the direction of actions of the membrane channels and transporters, and water flow that might trigger or cut off the transport pathways accompanies the transport of ions. We found that there is an electroneutral transport of sodium chloride in both directions of the cell monolayer in the isosmotic transepithelial concentration gradient of sodium or chloride ions. The ions and water are transported as an isosmotic solution of 145 mM of NaCl.