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      Urinary Excretion of Podocytes Reflects Disease Activity in Children with Glomerulonephritis

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          Abstract

          The significance of the presence of podocytes in the urine was studied in various renal diseases in children. The podocytes were detected by immunofluorescence using monoclonal antibodies against the podocalyxin that is present on the surface of podocytes which serves as a glycocalyx. They were scored according to the numbers per partitioned area on cytospun urine sediments. Urine podocytes were absent in normal control, nonglomerular diseases such as urinary tract infection and nonglomerular hematuria, and glomerular, noninflammatory diseases such as minimal change nephrotic syndrome and membranous nephropathy. Conversely, the excretion of podocytes in the urine were detected in various glomerular, inflammatory diseases. A significantly higher level of the podocyte score was found in the acute state of glomerular diseases which was defined as within 6 months after disease onset. Positive correlations were obtained between the presence of urinary podocytes and the histological features of active extracapillary changes and mesangial proliferation. Urinary podocytes were examined monthly for 12 months in 7 cases with IgA nephropathy and 2 cases with Henoch-Schönlein purpura nephritis, and a consistently higher urinary podocyte score was observed in the patients with histological progression. The scoring of urinary podocytes was found to be useful clinically, as a diagnostic tool for glomerular or nonglomerular diseases, inflammatory or noninflammatory diseases, a marker for the estimation of the severity of active glomerular injury and also as a predictor of disease progression.

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          Author and article information

          Journal
          AJN
          Am J Nephrol
          10.1159/issn.0250-8095
          American Journal of Nephrology
          S. Karger AG
          0250-8095
          1421-9670
          1998
          February 1998
          16 January 1998
          : 18
          : 1
          : 35-41
          Affiliations
          a Department of Pediatrics, Yoshida Hospital, and b Department of Pathology, Institute of Nephrology, School of Medicine, Niigata University, Niigata, Japan
          Article
          13302 Am J Nephrol 1998;18:35–41
          10.1159/000013302
          9481437
          © 1998 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: 2, References: 22, Pages: 7
          Product
          Self URI (application/pdf): https://www.karger.com/Article/Pdf/13302
          Categories
          Clinical Study

          Cardiovascular Medicine, Nephrology

          Podocytes in the urine, Disease activity, Glomerulonephritis

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