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      Atrial Natriuretic Factor Release in Cardiomyopathic Hamsters

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          Abstract

          Studies were done in male cardiomyopathic and normal hamsters to examine the effect of heart failure on atrial natriuretic factor (ANF) secretion. Five groups of animals were studied. The hamsters were 70, 150, 200, 250 and 300 days old. The degree of heart failure became more severe with age. This was associated with a marked increase in left and right atrial weight. Plasma ANF rose in the cardiomyopathic hamsters with age, and no significant change was seen in the normal animals. ANF levels in the atrial tissue declined as the animals developed heart failure, suggesting that ANF release increased in heart failure. To examine these directly, the right and left atria of these animals were isolated and superfused in a modified Langendorff apparatus. The effluents from these experiments were collected and analyzed for ANF levels. Analysis showed that ANF secretion (expressed as pg/min/mg of tissue) declined in heart failure. Since there were significant atrial hypertrophy, the results were also expressed as picogram per minute per atrium. When the data were shown as picogram per minute per atrium, there was a marked increase in ANF secretion. The present data show that one of the factors causing an increase in circulating ANF in heart failure is augmented secretion.

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          Author and article information

          Journal
          CRD
          Cardiology
          10.1159/issn.0008-6312
          Cardiology
          S. Karger AG
          0008-6312
          1421-9751
          1992
          1992
          12 November 2008
          : 80
          : 1
          : 12-17
          Affiliations
          Department of Medicine, University of British Columbia, Vancouver, Canada
          Article
          174974 Cardiology 1992;80:12–17
          10.1159/000174974
          1532533
          d135d1d8-fb63-42ab-8215-5a9b927ffafe
          © 1992 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
          : 24 June 1991
          : 02 July 1991
          Page count
          Pages: 6
          Categories
          General Cardiology

          General medicine,Neurology,Cardiovascular Medicine,Internal medicine,Nephrology
          Atrial natriuretic factor, release,Experimental heart failure

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