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      Dietary Citrate Treatment of Polycystic Kidney Disease in Rats

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          Abstract

          Progression of autosomal-dominant polycystic kidney disease (ADPKD) in the heterozygous male Han:SPRD rat is dramatically slowed by ingestion of potassium or sodium citrate. This study examined the efficacy of delayed therapy with sodium citrate, the effect of sodium citrate therapy on kidney cortex levels of transforming growth factor-β (TGF-β), and the response to calcium citrate ingestion. Rats were provided with citrate salts in their food, and renal clearance, blood pressure, blood chemistry, and survival determinations were made. Sodium citrate therapy was most effective when started at age 1 month, and delay of therapy until age 3 months produced no benefit. Kidney cortex TGF-β levels were elevated in 3- and 8-month-old rats with ADPKD, but not in 6-week-old rats. Sodium citrate treatment, started at age 1 month, lowered TGF-β levels to normal in 3-month-old rats, but this is probably not the primary mechanism of citrate’s beneficial effect. Calcium citrate had only a modest effect in preserving glomerular filtration rate. Effective treatment of ADPKD in this rat model requires early administration of a readily absorbed alkalinizing citrate salt. Existing data on ADPKD patients on vegetarian diets or with kidney stones should be studied in light of these findings.

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          The transforming growth factor beta system in kidney disease and repair: recent progress and future directions

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            Author and article information

            Journal
            NEP
            Nephron Physiol
            10.1159/issn.1660-2137
            Nephron Physiology
            S. Karger AG
            1660-2137
            2003
            January 2003
            30 October 2002
            : 93
            : 1
            : p14-p20
            Affiliations
            Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Ind., USA
            Article
            66654 Nephron Physiol 2003;93:p14–p20
            10.1159/000066654
            12411726
            © 2003 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
            Tables: 3, References: 27, Pages: 1
            Product
            Self URI (application/pdf): https://www.karger.com/Article/Pdf/66654
            Categories
            Original Paper

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