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      Differential Effects of Diuretic Agents on Electrolyte Excretion in the Dog

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          Abstract

          The sulfonamide derivative diuretics acetazolamide, metolazone and furosemide produce differing degrees of natriuresis and varying patterns of phosphate excretion. At least part of the explanation for these diverse actions could be related to divergent effects of the drugs on total renal blood flow (TRBF) and its intracortical distribution (IBFD). To test this hypothesis, and to determine if a consistent thesis regarding alterations in intrarenal blood flow could be developed, clearance studies were performed in chronically thyroparathyroidectomized dogs in which radioactive microsphere methodology was utilized to evaluate the distribution of blood flow within the renal cortex. These data were then compared with those available in the literature. The variations which the drugs induced in TRBF and IBFD did not help to explain the differences in their diuretic actions. However, a consistent hypothesis relating natriuresis, perfusion pressure, renal vascular resistance, TRBF and IBFD could be developed based on the data from this study and those available in the literature.

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          Author and article information

          Journal
          NEF
          Nephron
          10.1159/issn.1660-8151
          Nephron
          S. Karger AG
          1660-8151
          2235-3186
          1979
          1979
          02 December 2008
          : 23
          : 1
          : 38-45
          Affiliations
          Renal-Electrolyte Section, Departments of Medicine, Allegheny General Hospital, and the University of Pittsburgh School of Medicine. Pittsburgh, Pa.
          Article
          181604 Nephron 1979;23:38–45
          10.1159/000181604
          450165
          © 1979 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: 8
          Categories
          Original Paper

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