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      Lipoprotein(a) and Oxygen Free Radicals in Survivors of Acute Myocardial Infarction: Effects of Captopril

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          Abstract

          Long-term treatment of survivors of an acute myocardial infarction with angiotensin-converting enzyme inhibitors has a beneficial impact on their long-term outcome. We tested the hypothesis that captopril could reductively cleave the lipoprotein(a) molecule and in addition act as a scavenger of oxygen free radicals. In a double-blind trial, 20 patients were randomized to receive either captopril 50 mg daily or corresponding placebo. Patients were followed for a period of 30 days. Blood samples were drawn prior to randomization and after 30 days of treatment. Plasma concentrations of lipoprotein(a) and malondialdehyde were evaluated. Captopril treatment produced a significant reduction in plasma content of lipoprotein(a) (p < 0.05) and at day 30 the plasma content of lipoprotein(a) was also significantly lower than that in the placebo group (p < 0.05). Furthermore, on day 30 plasma concentrations of malondialdehyde, an indicator of oxidative damage, were significantly lower in the captopril group when compared to baseline values and corresponding placebo group values (p < 0.05). The observed effect of captopril treatment on lipoprotein(a) and malondialdehyde might be ascribed to the sulfhydryl group in the captopril molecule.

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          Author and article information

          Journal
          CRD
          Cardiology
          10.1159/issn.0008-6312
          Cardiology
          S. Karger AG
          0008-6312
          1421-9751
          1996
          1996
          19 November 2008
          : 87
          : 1
          : 18-22
          Affiliations
          Departments of aCardiology and bEndocrinology, Aarhus University Hospital, Aarhus, Denmark
          Article
          177054 Cardiology 1996;87:18–22
          10.1159/000177054
          8631039
          © 1996 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: 5
          Categories
          General Cardiology

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