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      Zoladex: Therapeutic Effects in Postmenopausal Breast Cancer

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          Abstract

          The endocrine and therapeutic effects of the luteinising hormone-releasing hormone (LHRH) analogue, Zoladex, have been assessed in 28 postmenopausal women with advanced breast cancer. Fourteen had responded to previous hormone therapy and 14 had received no previous hormone therapy. Zoladex treatment resulted in 2 partial responses and 2 patients with stable disease for more than 6 months in the former group, and 1 partial response and 2 with stable disease for more than 6 months in the latter group. Toxicity was minimal. All responses occurred in soft tissue disease. Peripheral oestradiol levels fell after 1 month of Zoladex from 33 pmol/l ( ± 20 SD) to 22 pmol/l ( ± 11 SD) (p < 0.005) and both responders and nonresponders showed similar changes in oestradiol. Oestrone levels did not change significantly. Six out of 7 patients who received tamoxifen after progression of disease on Zoladex, showed a response. These results suggest that Zoladex acts indirectly via changes in peripheral hormone levels rather than directly on LHRH receptors on the tumour.

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          Author and article information

          Journal
          HRE
          Horm Res Paediatr
          10.1159/issn.1663-2818
          Hormone Research in Paediatrics
          S. Karger AG
          978-3-8055-5105-2
          978-3-318-01977-3
          1663-2818
          1663-2826
          1989
          1989
          02 December 2008
          : 32
          : Suppl 1
          : 213-217
          Affiliations
          aUniversity Department of Clinical Oncology, Regional Radiotherapy Centre, Newcastle General Hospital, Newcastle-upon-Tyne, and bEndocrine Department, Chelsea Hospital for Women, London, UK
          Article
          181349 Horm Res 1989;32:213–217
          10.1159/000181349
          2533153
          1bc4d466-c19c-429f-a305-dd9c4bfd45c8
          © 1989 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
          Page count
          Pages: 5
          Categories
          Breast Cancer

          Endocrinology & Diabetes,Neurology,Nutrition & Dietetics,Sexual medicine,Internal medicine,Pharmacology & Pharmaceutical medicine
          Peripheral hormonal effects,LHRH analogue,Postmenopausal breast cancer,Zoladex

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