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      Receptor Binding of 6α-Methylprogesterone in Mouse Kidney

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          Abstract

          6α-Methylprogesterone (6MP) is an androgenic progestin that binds to the androgen receptor. However, results from an in vivo study suggested that 6MP was also bound by a second receptor. In the present study, we found that 6MP was bound in kidney cytosol from adrenalectomized/ovariectomized female mice as well as Tfm/Y mice, which lack androgen receptors. 6MP was bound with high affinity (K<sub>d</sub> = 1.2 × 10<sup>-8</sup> M)by a binder that was present in 7-8 times greater concentration than the androgen receptor and had the specificity of a glucocorticoid receptor. 6MP was bound with similar specificity in liver cytosol. These data indicate that, despite its androgenic effects, 6MP binds primarily to a glucocorticoid receptor in mouse kidney.

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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
          1663-2818
          1663-2826
          1985
          1985
          26 November 2008
          : 21
          : 4
          : 261-269
          Affiliations
          Department of Medicine, Section of Endocrinology, Tufts University, School of Veterinary Medicine, Boston, Mass., USA
          Article
          180059 Horm Res 1985;21:261–269
          10.1159/000180059
          4007785
          © 1985 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.

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          Pages: 9
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