Elevated Pituitary LH and Depressed Pituitary Prolactin Levels in Female Hamsters with Pineal-Induced Gonadal Atrophy and the Effects of Chronic Treatment with Synthetic LRF

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Abstract

Light deprivation by blinding leads to involution of the reproductive organs and cessation of cyclic vaginal phenomena in adult fe-male hamsters. Associated with the atrophy of the reproductive system are elevated LH levels and depressed prolactin levels in the anterior pituitary gland. Chronic treatment (15 or 30 days) of blind hamsters with synthetic luteinizing hormone releasing factor (LRF) decreased pituitary levels and elevated plasma titers of LH. Neither pituitary nor plasma levels of prolactin were influenced by LRF treatment. Pinealectomy completely reversed the effects of blinding on the reproductive organs and on the pituitary levels of LH and prolactin.

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Journal

Journal ID (publisher-id): NEN

Journal ID (nlm-ta): Neuroendocrinology

Journal ID (doi): 10.1159/issn.0028-3835

Title: Neuroendocrinology

Publisher: S. Karger AG

ISSN (Print): 0028-3835

ISSN (Electronic): 1423-0194

Publication date Subscription-year: 1974

Publication date (Print): 1974

Publication date (Electronic): 20 March 2008

Volume: 14

Issue: 5

Pages: 310-320

Affiliations

Department of Anatomy, The University of Texas Health Science Center at San Antonio, San Antonio, Tex.

Article

Publisher ID: 122274 Other ID: Neuroendocrinology 1974;14:310–320

DOI: 10.1159/000122274

PubMed ID: 4603274

SO-VID: 542ccfcb-c742-446c-9cde-efff3b13a2cb

License:

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

Date received : 10 September 1973

Date accepted : 07 November 1973

Page count

Pages: 11

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