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The role of renal water channels in health and disease

Authors
Journal
Molecular Aspects of Medicine
0098-2997
Publisher
Elsevier
Volume
33
Identifiers
DOI: 10.1016/j.mam.2012.01.001
Keywords
  • Kidney
  • Aquaporins
  • Water Transport
  • Vasopressin
  • Membrane Channels
Disciplines
  • Biology
  • Medicine

Abstract

Abstract Seven members of the aquaporin (AQP) family are expressed in different regions of the kidney. AQP1–4 are localized in plasma membranes of renal epithelial cells and are intimately involved in water reabsorption by the kidney. AQP7 is also localized in the plasma membrane and may facilitate glycerol transport. AQP6 and AQP11 are localized within the cell, with AQP6 involved in anion transport and AQP11 water transport. Mutations in AQP2 can result in diabetes insipidus, whereas mutations in other AQPs have not yet been shown to be disease-associated. Genetic polymorphisms may contribute to the susceptibility to defects in urine concentrating mechanisms associated with some diseases. Most of the AQPs are subject to transcriptional regulation and post-translational modifications by a range of biological modifiers. As a result a number of chronic kidney and systemic diseases produce changes in the abundance of AQPs. The more recent developments in this field are reviewed.

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