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Aquaporin-2 transcript is differentially regulated by dietary salt in Sprague-Dawley and Dahl SS/Jr rats.

Authors: Roxas, B  Farjah, M  Danziger, R 
Citation: Roxas B, etal., Biochem Biophys Res Commun 2002 Aug 23;296(3):755.
Pubmed: (View Article at PubMed) PMID:12176047

Aquaporin-2 (AQP-2) is a vasopressin-regulated water channel in the kidney collecting duct. AQP-2 transcript has been identified by transcriptional profiling of rat kidneys as being regulated by dietary salt. We compared renal AQP-2 transcript expression in Sprague-Dawley and Dahl salt-sensitive (SS/Jr) rats using real-time RT-PCR. Expression of AQP-2 transcript is 5-fold less (P<0.01) in the Sprague-Dawley and 3-fold greater in Dahl SS/Jr rats (P<0.01) on high versus basal NaCl diets. The AQP-2 coded sequence was identical in Sprague-Dawley and Dahl SS/Jr rats. The present results provide evidence that: (1)AQP-2 plays a role in salt adaptation and (2) regulation of aquaporin transcript expression by salt is altered in the Dahl SS/Jr rat.


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RGD Object Information
RGD ID: 625535
Created: 2002-09-27
Species: All species
Last Modified: 2002-09-27
Status: ACTIVE


RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.