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      Serum Erythropoietin and Reticulocyte Maturity Index after Renal Transplantation: A Prospective Longitudinal Study

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          Abstract

          Improvement in erythropoiesis following renal transplantation (RT) was assessed in 74 consecutive patients by serial measurements of serum erythropoietin (EPO), hematocrit, absolute reticulocyte count (ARC) and serum creatinine during the first month after RT. The reticulocyte maturity index (RMI) which provides an objective measure of red-cell maturity was assessed in 31 patients by flow cytometry using thiazole orange. In group I (n = 39) with immediate graft function, EPO levels increased rapidly from day 2 and remained elevated at the plateau between two and three times the upper limit of normal during the first 2 months. In group II (n = 29) with delayed graft function, EPO levels increased gradually from day 10 when renal function improved significantly. No particular significant biphasic pattern of secretion was detected in group I or II. In both groups, hematocrit rose to over 35% approximately 3 months after RT. In a third group (n = 6) with immediate postoperative acute blood loss and severe anemia, a hematocrit fall was followed by a steep increase in EPO levels with a negative correlation between hematocrit and EPO levels during the first 4 days. During acute rejection, EPO diminished significantly by more than 50% either on the day of diagnosis or on the following days in 8 patients. RMI increased by 25% over the pretransplantation values by 7 days on average before the ARC rose. Thus the RMI seems to be an early sensitive predictor of erythropoiesis after RT. EPO response after RT depends on graft function, and the early transient increase in EPO observed in patients with acute blood loss may explain the apparent biphasic response previously reported.

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          Author and article information

          Journal
          NEF
          Nephron
          10.1159/issn.1660-8151
          Nephron
          S. Karger AG
          1660-8151
          2235-3186
          1995
          1995
          17 December 2008
          : 69
          : 3
          : 259-266
          Affiliations
          aService de Néphrologie, bLaboratoire d’Hématologie et cLaboratoire de Médecine Nucléaire, Hôpital de la Conception, Marseille, France
          Article
          188467 Nephron 1995;69:259–266
          10.1159/000188467
          7753259
          © 1995 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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