Pendrin, encoded by Slc26a4 , modulates ENaC expression and function
نویسندگان
چکیده
منابع مشابه
Functional cross talk between ENaC and pendrin.
EPITHELIAL Na CHANNELS (ENaC) are expressed in the aldosterone-sensitive distal nephron, where they serve as the final site of renal Na reabsorption and participate in the regulation of extracellular fluid volume and blood pressure. ENaC gain-offunction mutations are associated with hypertension, whereas loss-of-function mutations are associated with hypotension. Appreciation of the features th...
متن کاملReduced ENaC protein abundance contributes to the lower blood pressure observed in pendrin-null mice.
Pendrin (encoded by Pds, Slc26a4) is a Cl(-)/HCO(3)(-) exchanger expressed in the apical regions of type B and non-A, non-B intercalated cells of kidney and mediates renal Cl(-) absorption, particularly when upregulated. Aldosterone increases blood pressure by increasing absorption of both Na(+) and Cl(-) through increased protein abundance and function of Na(+) transporters, such as the epithe...
متن کاملThe anion exchanger pendrin (SLC26A4) and renal acid-base homeostasis.
The anion exchanger pendrin (Pds, SLC26A4) transports various anions including bicarbonate, chloride and iodide. In the kidney, pendrin is exclusively expressed on the luminal pole of bicarbonate-secretory type B intercalated cells. Genetic ablation of pendrin in mice abolishes luminal chloride-bicarbonate exchanger activity from type B intercalated cells suggesting that pendrin is the apical b...
متن کاملPendrin gene ablation alters ENaC subcellular distribution and open probability.
The present study explored whether the intercalated cell Cl(-)/HCO3(-) exchanger pendrin modulates epithelial Na(+) channel (ENaC) function by changing channel open probability and/or channel density. To do so, we measured ENaC subunit subcellular distribution by immunohistochemistry, single channel recordings in split open cortical collecting ducts (CCDs), as well as transepithelial voltage an...
متن کاملCortical distal nephron Cl(-) transport in volume homeostasis and blood pressure regulation.
Renal intercalated cells mediate the secretion or absorption of Cl(-) and OH(-)/H(+) equivalents in the connecting segment (CNT) and cortical collecting duct (CCD). In so doing, they regulate acid-base balance, vascular volume, and blood pressure. Cl(-) absorption is either electrogenic and amiloride-sensitive or electroneutral and thiazide-sensitive. However, which Cl(-) transporter(s) are tar...
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ژورنال
عنوان ژورنال: The FASEB Journal
سال: 2007
ISSN: 0892-6638,1530-6860
DOI: 10.1096/fasebj.21.6.a902-a