Summary
Human sweat duct cells from the coiled reabsorptive segment have been cultured successfully, free from fibroblasts, in a low serum, hormone-supplemented medium. Ham's F12. The cultured cells exhibited a typical epithelial cobblestone pattern and microvilli-covered luminal cells were seen joined together with typical junctional complexes. In cultures derived from normals and patients with cystic fibrosis (CF), growth and morphologic characteristics were indistinguishable. When grown on a membranous support, and mounted in an Ussing chamber, vectorial electroconductive ion-transport could be identified. The epithelial preparations produced active mucosa to serosa-directed sodium flux via amiloride-sensitive, apical sodium channels and ouabain-sensitive sodium pumps located in the basolateral membrane, which also contained a potassium shunt. These findings are consistent with a polarized epithelium with properties similar to the intact organ. High transepithelial resistance and increased amiloride sensitivity were typical for cells derived from CF, indicating that principal normal as well as pathologic properties of the sweat duct are preserved in culture.
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Financial support was provided by CF Foundation USA (G1397-01), SLF, Ville Heyse, Haensch, Nationalforeningen, Winthertur, Novo, and Egmont Foundation.
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Pedersen, P.S. Human sweat duct cells in primary culture. Basic bioelectric properties of cultures derived from normals and patients with cystic fibrosis. In Vitro Cell Dev Biol 25, 342–352 (1989). https://doi.org/10.1007/BF02624597
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DOI: https://doi.org/10.1007/BF02624597