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SGK1 in the kidney: disrupted sodium transport in diabetes and beyond
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Hills, Claire E., Bland, Rosemary and Squires, Paul E. SGK1 in the kidney: disrupted sodium transport in diabetes and beyond. Asia-Pacific Journal of Endocrinology, Vol.1 (No.1). pp. 27-34.
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Official URL: http://issuu.com/sanlucasmedical/docs/apjoe.1.1
Abstract
Renal complications of diabetes can be severe; however, the mechanisms that underlie the development and progression of diabetic nephropathy are poorly understood. Recent evidence suggests that the serum and glucocorticoid induced kinase-1 (SGK1) may be key to this process. SGK1 expression and function are increased in models of diabetes and polymorphisms of the SGK1 gene are associated with type 2 diabetes mellitus. A key regulator of sodium transport within the renal epithelium of the distal nephron, SGK1 was originally isolated as a glucocorticoid-sensitive gene that regulated the epithelial sodium channel (ENaC; known also as the sodium channel, nonvoltage-gated 1, SCNN1). It is now apparent that SGK1 modulates sodium re-absorption by a number of sodium transporters/channels throughout the length of the nephron including; the Na+/H+ exchange isoform 3 (NHE3), the Na+Cl- co-transporter (NCC) and the Na+/K+-ATPase. In addition, SGK1 is regulated by a diverse range of factors including; insulin, glucose, intracellular calcium, transforming growth factor-beta1, flow rate and osmolality. This brief review examines the evidence supporting an involvement of SGK1 in diabetic nephropathy and discusses how dysregulated sodium transport may account for the development of secondary hypertension associated with the condition. Furthermore, the article examines how aberrant SGK1 expression and activity may be responsible for the cellular changes seen in the damaged nephron.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > Q Science (General) |
| Divisions: | Faculty of Science > Life Sciences (2010- ) |
| Journal or Publication Title: | Asia-Pacific Journal of Endocrinology |
| Publisher: | San Lucas Medical Ltd |
| ISSN: | 2041-7993 |
| Volume: | Vol.1 |
| Number: | No.1 |
| Number of Pages: | 8 |
| Page Range: | pp. 27-34 |
| Status: | Not Peer Reviewed |
| Publication Status: | Published |
| Access rights to Published version: | Restricted or Subscription Access |
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