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      Evidence of Defective Tubular Reabsorption and Normal Secretion of Uric Acid in the Syndrome of Inappropriate Secretion of Antidiuretic Hormone

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          Abstract

          The mechanisms responsible for the increased renal clearance of uric acid in the syndrome of inappropriate secretion of antidiuretic hormone (SIADH) are not fully clarified. Studies using either pyrazinamide or probenecid, or both drugs but at an interval of several days, could not undoubtedly distinguish the ‘hypersecretory theory’ from the one favoring a defect in either post- or presecretory reabsorption. We decided to do a combined pyrazinamide and probenecid test in 5 patients with hyponatremia due to SIADH in order to evaluate more clearly the respective importance of these different pathways. Our results allow the conclusion of a diminished presecretory and mainly postsecretory reabsorption (80 ± 4.6 and 14 ± 3% of filtered load, respectively). As far as the secretion of uric acid is concerned (17 ± 10% of filtered load), we may say that this pathway is adapted to the amount of hypouricemia.

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          Author and article information

          Journal
          NEF
          Nephron
          10.1159/issn.1660-8151
          Nephron
          S. Karger AG
          1660-8151
          2235-3186
          1993
          1993
          12 December 2008
          : 64
          : 2
          : 189-192
          Affiliations
          Research Unit for the Study of Hydromineral Metabolism, Departement of Internal Medicine, Erasmus University Hospital, Free University of Brussels, Belgium
          Article
          187312 Nephron 1993;64:189–192
          10.1159/000187312
          8321349
          © 1993 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: 4
          Categories
          Original Paper

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