Abstract
The epithelial sodium channel/degenerin (ENaC/deg) family of ion channels is formed by a large number of genes with variable tissue expression patterns and physiological roles. ENaC is a non-voltage gated, constitutively active channel highly selective for sodium. ENaC is formed by three homologous subunits, α, β and γ, and a fourth subunit (δ) has been found in human and monkeys that can substitute α to form functional channels. The best-characterized role of ENaC is to serve as a rate-limiting step in transepithelial sodium reabsorption in the distal part of the kidney tubule and other tight epithelia. However, ENaC subunits are also found in the peripheral and central nervous system, where their functional roles are only beginning to be understood. In this review, we mainly focus on the putative pathophysiological roles of ENaC channels in the central nervous system and their potential value as drug targets in neurodegenerative disorders and the central control of blood pressure.
Keywords: ASIC, amiloride, degenerins, delta subunit, ENaC, neuroprotection.
Current Molecular Pharmacology
Title:ENaC in the Brain - Future Perspectives and Pharmacological Implications
Volume: 6
Author(s): Teresa Giraldez, Jaime Dominguez and Diego Alvarez de la Rosa
Affiliation:
Keywords: ASIC, amiloride, degenerins, delta subunit, ENaC, neuroprotection.
Abstract: The epithelial sodium channel/degenerin (ENaC/deg) family of ion channels is formed by a large number of genes with variable tissue expression patterns and physiological roles. ENaC is a non-voltage gated, constitutively active channel highly selective for sodium. ENaC is formed by three homologous subunits, α, β and γ, and a fourth subunit (δ) has been found in human and monkeys that can substitute α to form functional channels. The best-characterized role of ENaC is to serve as a rate-limiting step in transepithelial sodium reabsorption in the distal part of the kidney tubule and other tight epithelia. However, ENaC subunits are also found in the peripheral and central nervous system, where their functional roles are only beginning to be understood. In this review, we mainly focus on the putative pathophysiological roles of ENaC channels in the central nervous system and their potential value as drug targets in neurodegenerative disorders and the central control of blood pressure.
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Cite this article as:
Giraldez Teresa, Dominguez Jaime and Rosa Diego Alvarez de la, ENaC in the Brain - Future Perspectives and Pharmacological Implications, Current Molecular Pharmacology 2013; 6 (1) . https://dx.doi.org/10.2174/1874467211306010006
DOI https://dx.doi.org/10.2174/1874467211306010006 |
Print ISSN 1874-4672 |
Publisher Name Bentham Science Publisher |
Online ISSN 1874-4702 |
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