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      Chronic Triiodothyronine Supplementation Does Not Improve the Lipoprotein Disorders of Mildly Uremic Rats

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          Abstract

          The present study was performed to appreciate the potential role that thyroid deficiency could play in the energy homeostasis and lipid metabolism of experimental chronic renal failure. For this purpose, 12 uremic rats that were supplemented with T<sub>3</sub> (0.4 μg/100 g body weight/day) during 5 weeks by means of osmotically driven minipumps were compared to 12 unsupplemented uremic rats and 12 control rats. The chronic supplementation of uremic rats with T<sub>3</sub> induced no significant change in body weight gain or in the serum concentration of insulin, glucose, glycerol, nonesterified fatty acids, total triglycerides (TG), total cholesterol, and total choline phospholipids. Similarly, the metabolism of TG-rich lipoproteins was not affected by the supplementation with T<sub>3</sub> in these uremic rats as appreciated by TG production or TG degradation (adipose tissue lipoprotein lipase activity). T<sub>3</sub> administration induced a significant decrease in serum β-hydroxybutyrate concentration and an increase in serum lactate concentration. Furthermore, heparin-releasable hepatic TG lipase activity as expressed per total liver mass was decreased in uremic rats treated with T<sub>3</sub>. The latter changes were observed in the absence of modifications of serum glucose or TG concentration. We conclude from these observations that rats with a moderate degree of chronic uremia do not seem to have a cellular thyroid deficiency sufficient to disturb their energy or lipid metabolism.

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          Author and article information

          Journal
          NEF
          Nephron
          10.1159/issn.1660-8151
          Nephron
          S. Karger AG
          1660-8151
          2235-3186
          1987
          1987
          05 December 2008
          : 45
          : 2
          : 129-134
          Affiliations
          aInserm U 90, Hôpital Necker, et bLaboratoire de Biochimie, Hôpital du Val de Grâce, Paris, France
          Article
          184094 Nephron 1987;45:129–134
          10.1159/000184094
          3550497
          544ffaed-5f68-4bc6-8ed6-1db5a07a87d6
          © 1987 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.

          History
          : 07 April 1986
          Page count
          Pages: 6
          Categories
          Original Paper

          Cardiovascular Medicine,Nephrology
          Thyroid insufficiency,Lipid disorders,T3-supplementation,Uremia
          Cardiovascular Medicine, Nephrology
          Thyroid insufficiency, Lipid disorders, T3-supplementation, Uremia

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