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Updated: Jul 7, 2026

Culturing Primary Rat Inner Medullary Collecting Duct Cells
Published on: June 21, 2013
Aldosterone-induced signalling and cation transport in the distal nephron
Warren Thomas1, Victoria McEneaney, Brian J Harvey
1Department of Molecular Medicine, Royal College of Surgeons in Ireland Education and Research Centre, Beaumont Hospital, Dublin, Ireland. wthomas@rcsi.ie
Abstract:
Aldosterone is an important regulator of Na(+) and K(+) transport in the distal nephron modulating the surface expression of transporters through the action of the mineralocorticoid receptor as a ligand-dependent transcription factor. Aldosterone stimulates the rapid activation of protein kinase-based signalling cascades that modulate the genomic effects of the hormone. Evidence is accumulating about the multi-factorial regulation of the epithelial sodium channel (ENaC) by aldosterone. Recent published data suggests that the activation of a novel PKC/PKD signalling pathway through the c-Src-dependent trans-activation of epidermal growth factor receptor contributes to early ENaC trafficking in response to aldosterone.
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