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      Decreased Bilirubin-Binding Capacity in Uremic Serum Caused by an Accumulation of Furan Dicarboxylic Acid

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          Abstract

          In chronic renal failure, substances that are effectively excreted in healthy subjects accumulate in serum. These substances, uremic toxins, include a variety of organic acids. It has been reported that a decrease in the bilirubin (BR) binding capacity occurs in the serum of renal failure patients. 3-Carboxy-4-methyl-5-propyl-2-furanpropanoic acid (CMPF) has a high affinity for human serum albumin (HSA) and is a potent inhibitor of the serum protein binding of many drugs. We recently reported that CMPF and BR share the binding site for dicarboxylate molecules on the HSA molecule [Pharm Res 1999;16:916–923]. In this study, in order to confirm whether CMPF is involved in the decrease of BR serum binding capacity in chronic renal failure patients, the total concentrations of uremic toxins, CMPF, and indoxyl sulfate (IS) and the free BR concentration in serum from healthy volunteers and renal failure patients were determined. Both total CMPF and IS concentrations correlate with the free BR concentration. However, results from the peroxidase method reveal that IS cannot displace BR under the physiological condition [IS]/[HSA] <1. We, therefore, conclude that CMPF is one of the substances which contribute to the decreased binding capacity of BR in uremic serum.

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          Most cited references 2

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          Accumulation of furancarboxylic acids in uremic serum as inhibitors of drug binding

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            Diagnostic efficacy of serum cross-linked N-telopeptide (NTx) and aminoterminal procollagen extension propeptide (PINP) measurements for identifying elderly women with decreased bone mineral density

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              Author and article information

              Journal
              NEF
              Nephron
              10.1159/issn.1660-8151
              Nephron
              S. Karger AG
              1660-8151
              2235-3186
              2000
              May 2000
              21 April 2000
              : 85
              : 1
              : 60-64
              Affiliations
              aFaculty of Pharmaceutical Sciences, Kumamoto University, Kumamoto, bDaiichi College of Pharmaceutical Sciences, Fukuoka, and cShimada Hospital, Kumamoto, Japan
              Article
              45631 Nephron 2000;85:60–64
              10.1159/000045631
              10773757
              © 2000 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
              Figures: 4, Tables: 1, References: 16, Pages: 5
              Product
              Self URI (application/pdf): https://www.karger.com/Article/Pdf/45631
              Categories
              Original Paper

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