Article: Epithelial Ca2+ and Mg2+ channels in health and disease.
Journal of the American Society of Nephrology : JASN
2005 Volume 16, Issue 1, Page(s) 15–26
Abstract: ... These epithelial Ca(2+) (TRPV5 and TRPV6) and Mg(2+) channels (TRPM6 and TRPM7) form prime targets ... epithelial Ca(2+) and Mg(2+) channels in (patho)physiologic situations. ... compartment. This review describes the characteristics of epithelial Ca(2+) and Mg(2+) transport in general ...
| Abstract | A near constancy of the extracellular Ca(2+) and Mg(2+) concentration is required for numerous physiologic functions at the organ, tissue, and cellular levels. This suggests that minor changes in the extracellular concentration of these divalents must be detected to allow the appropriate correction by the homeostatic systems. The maintenance of the Ca(2+) and Mg(2+) balance is controlled by the concerted action of intestinal absorption, renal excretion, and exchange with bone. After years of research, rapid progress was made recently in identification and characterization of the Ca(2+) and Mg(2+) transport proteins that contribute to the delicate balance of divalent cations. Expression-cloning approaches in combination with knockout mice models and genetic studies in families with a disturbed Mg(2+) balance revealed novel Ca(2+) and Mg(2+) gatekeeper proteins that belong to the super family of the transient receptor potential (TRP) channels. These epithelial Ca(2+) (TRPV5 and TRPV6) and Mg(2+) channels (TRPM6 and TRPM7) form prime targets for hormonal control of the active Ca(2+) and Mg(2+) flux from the urine space or intestinal lumen to the blood compartment. This review describes the characteristics of epithelial Ca(2+) and Mg(2+) transport in general and highlights in particular the distinctive features and the physiologic relevance of these new epithelial Ca(2+) and Mg(2+) channels in (patho)physiologic situations. |
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| MeSH term(s) | Animals ; Calcium/metabolism ; Calcium Channels/physiology ; Epithelial Cells/physiology ; Humans ; Kidney/cytology ; Kidney/physiology ; Kidney Diseases/metabolism ; Kidney Diseases/physiopathology ; Magnesium/metabolism | |||||
| Chemical Substances | Calcium Channels ; Magnesium (I38ZP9992A) ; Calcium (SY7Q814VUP) | |||||
| Language | English | |||||
| Publishing date | 2005-01 | |||||
| Publishing country | United States | |||||
| Document type | Journal Article ; Research Support, Non-U.S. Gov't ; Review | |||||
| ZDB-ID | 1085942-1 | |||||
| ISSN | 1533-3450 ; 1046-6673 | |||||
| ISSN (online) | 1533-3450 | |||||
| ISSN | 1046-6673 | |||||
| DOI | 10.1681/ASN.2004070523 | |||||
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| Database | MEDical Literature Analysis and Retrieval System OnLINE |
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