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      The Influence of Ouabain on in vitro Renin Secretion and Intracellular Sodium

      ,

      Nephron

      S. Karger AG

      Renin, <italic>in vitro </italic>renin secretion, Ouabain, Sodium

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          Abstract

          Renin secretion has been hypothesized to be inversely related to the tubular sodium concentration or load. Using rat kidney cortex slices, in vitro renin secretion was measured as a function of sodium concentration of the medium. We found, as have many others, that renin secretion increases with increasing medium sodium concentration. However, in the presence of 10<sup>-3</sup>m ouabain, renin secretion decreased with increasing medium sodium concentration. We also found that intracellular sodium concentration varied directly with medium sodium both in the presence and absence of ouabain. Furosemide, a known renin stimulator in vivo, had no effect on renin secretion from tissue slices. Although obvious differences exist between in vitro and in vivo results, no simple relationship may exist between intracellular sodium concentration and renin secretion.

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          Author and article information

          Journal
          NEF
          Nephron
          10.1159/issn.1660-8151
          Nephron
          S. Karger AG
          1660-8151
          2235-3186
          1975
          1975
          28 November 2008
          : 14
          : 6
          : 442-450
          Affiliations
          Department of Physiology, Wayne State University School of Medicine, Detroit, Mich. 48201
          Article
          180478 Nephron 1975;14:442–450
          10.1159/000180478
          1153045
          © 1975 S. Karger AG, Basel

          Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, microcopying, or by any information storage and retrieval system, without permission in writing from the publisher. Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug. Disclaimer: The statements, opinions and data contained in this publication are solely those of the individual authors and contributors and not of the publishers and the editor(s). The appearance of advertisements or/and product references in the publication is not a warranty, endorsement, or approval of the products or services advertised or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements.

          Page count
          Pages: 9
          Categories
          Original Paper

          Cardiovascular Medicine, Nephrology

          Renin, Sodium, Ouabain, <italic>in vitro </italic>renin secretion

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