Abstract:
:Potassium depletion affects AQP2 expression and the cellular composition of the kidney collecting duct. This, in turn, contributes to the development of a secondary form of nephrogenic diabetes insipidus and hypokalemic nephropathy. Here we show that after 14 days of potassium depletion, the cellular fraction of A-type intercalated cells increases while the fraction of principal cells decreases along the outer medullary collecting duct in rats. The intercalated cells acquired a novel distribution pattern forming rows of cells attached to each other. These morphological changes occur progressively and reverse after 7 days of recovery on normal rat chow diet. The cellular remodeling mainly occurred in the inner stripe of outer medulla similar to the previously seen effect of lithium on the collecting duct cellular profile. The cellular remodeling is associated with the appearance of cells double labelled with both specific markers of principal and type-A intercalated cells. The appearance of this cell type was associated with the downregulation of the Notch signaling via the Hes1 pathways. These results show that the epithelium of the collecting duct has a high degree of plasticity and that Notch signaling likely plays a key role during hypokalemia.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Iervolino A,Prosperi F,De La Motte LR,Petrillo F,Spagnuolo M,D'Acierno M,Siccardi S,Perna AF,Christensen BM,Frische S,Capasso G,Trepiccione Fdoi
10.1038/s41598-020-61882-7subject
Has Abstractpub_date
2020-03-31 00:00:00pages
5708issue
1issn
2045-2322pii
10.1038/s41598-020-61882-7journal_volume
10pub_type
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