Kidney dopamine D1-like receptors and angiotensin 1-7 interaction inhibits renal Na+ transporters

dc.contributor.authorBanday, Anees A.
dc.contributor.authorDiaz, Andrea
dc.contributor.authorLokhandwala, Mustafa
dc.contributor.funderNational Heart, Lung, and Blood Instituteen
dc.date.accessioned2021-09-23T14:04:46Z
dc.date.available2021-09-23T14:04:46Z
dc.date.issued2019-10-09
dc.date.updated2021-09-23T13:54:22Z
dc.description.abstractThe role of dopamine D1-like receptors (DR) in the regulation of renal Na+ transporters, natriuresis, and blood pressure is well established. However, the involvement of the angiotensin 1-7 (ANG 1-7)-Mas receptor in the regulation of Na+ balance and blood pressure is not clear. The present study aimed to investigate the hypothesis that ANG 1-7 can regulate Na+ homeostasis by modulating the renal dopamine system. Sprague-Dawley rats were infused with saline alone (vehicle) or saline with ANG 1-7, ANG 1-7 antagonist A-779, DR agonist SKF38393, and antagonist SCH23390. Infusion of ANG 1-7 caused significant natriuresis and diuresis compared with saline alone. Both natriuresis and diuresis were blocked by A-779 and SCH23390. SKF38393 caused a significant, SCH23390-sensitive natriuresis and diuresis, and A-779 had no effect on the SKF38393 response. Concomitant infusion of ANG 1-7 and SKF38393 did not show a cumulative effect compared with either agonist alone. Treatment of renal proximal tubules with ANG 1-7 or SKF38393 caused a significant decrease in Na+-K+-ATPase and Na+/H+ exchanger isoform 3 activity. While SCH23390 blocked both ANG 1-7- and SKF38393-induced inhibition, the DR response was not sensitive to A-779. Additionally, ANG 1-7 activated PKG, enhanced tyrosine hydroxylase activity via Ser40 phosphorylation, and increased renal dopamine production. These data suggest that ANG 1-7, via PKG, enhances tyrosine hydroxylase activity, which increases renal dopamine production and activation of DR and subsequent natriuresis. This study provides evidence for a unidirectional functional interaction between two G protein-coupled receptors to regulate renal Na+ transporters and induce natriuresis.en
dc.description.sponsorshipNational Heart, Lung, and Blood Institute (Grant HL-139808)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationBanday, A. A., Diaz, A. and Lokhandwala, M. (2019) 'Kidney dopamine D1-like receptors and angiotensin 1-7 interaction inhibits renal Na+ transporters', American Journal of Physiology - Renal Physiology, 317(4), pp. F949-F956. doi: 10.1152/ajprenal.00135.2019en
dc.identifier.doi10.1152/ajprenal.00135.2019en
dc.identifier.eissn1522-1466
dc.identifier.endpageF956en
dc.identifier.issn1931-857X
dc.identifier.issued4en
dc.identifier.journaltitleAmerican Journal of Physiology - Renal Physiologyen
dc.identifier.startpageF949en
dc.identifier.urihttps://hdl.handle.net/10468/11994
dc.identifier.volume317en
dc.language.isoenen
dc.publisherAmerican Physiological Societyen
dc.rights© 2019, American Physiological Society. All rights reserved. This is a post-peer-review, pre-copyedit version of an article published in American Journal of Physiology - Renal Physiology. The final authenticated version is available online at: https://doi.org/10.1152/ajprenal.00135.2019en
dc.subjectNa-K-ATPaseen
dc.subjectNa/H exchangeren
dc.subjectNatriuresisen
dc.subjectRenal tubulesen
dc.titleKidney dopamine D1-like receptors and angiotensin 1-7 interaction inhibits renal Na+ transportersen
dc.typeArticle (peer-reviewed)en
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