Article ; Online: New functions and roles of the Na
Pflugers Archiv : European journal of physiology
2024 Volume 476, Issue 4, Page(s) 505–516
Abstract: The sodium/proton exchanger isoform 3 (NHE3) is expressed in the intestine and the kidney, where it contributes to hydrogen secretion and sodium (re)absorption. The roles of this transporter have been studied by the use of the respective knockout mice ... ...
Abstract | The sodium/proton exchanger isoform 3 (NHE3) is expressed in the intestine and the kidney, where it contributes to hydrogen secretion and sodium (re)absorption. The roles of this transporter have been studied by the use of the respective knockout mice and by using pharmacological inhibitors. Whole-body NHE3 knockout mice suffer from a high mortality rate (with only ∼30% of mice surviving into adulthood), and based on the expression of NHE3 in both intestine and kidney, some conclusions that were originally derived were based on this rather complex phenotype. In the last decade, more refined models have been developed that added temporal and spatial control of NHE3 expression. For example, novel mouse models have been developed with a knockout of NHE3 in intestinal epithelial cells, tubule/collecting duct of the kidney, proximal tubule of the kidney, and thick ascending limb of the kidney. These refined models have significantly contributed to our understanding of the role of NHE3 in a tissue/cell type-specific manner. In addition, tenapanor was developed, which is a non-absorbable, intestine-specific NHE3 inhibitor. In rat and human studies, tenapanor lowered intestinal P |
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MeSH term(s) | Animals ; Humans ; Mice ; Rats ; Isoquinolines ; Mice, Knockout ; Sodium/metabolism ; Sodium-Hydrogen Exchanger 3/metabolism ; Sodium-Hydrogen Exchangers/genetics ; Sodium-Hydrogen Exchangers/metabolism ; Sulfonamides |
Chemical Substances | Isoquinolines ; Sodium (9NEZ333N27) ; Sodium-Hydrogen Exchanger 3 ; Sodium-Hydrogen Exchangers ; Sulfonamides ; tenapanor (WYD79216A6) ; SLC9A3 protein, human |
Language | English |
Publishing date | 2024-03-07 |
Publishing country | Germany |
Document type | Journal Article ; Review |
ZDB-ID | 6380-0 |
ISSN | 1432-2013 ; 0031-6768 |
ISSN (online) | 1432-2013 |
ISSN | 0031-6768 |
DOI | 10.1007/s00424-024-02938-9 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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