Influence of the Pineal Gland on Hypothalamic Content of TRH in the Syrian Hamster

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Abstract

Blinding adult female hamsters by bilateral orbital enucleation caused an increase in thyrotropin-releasing hormone (TRH) content of the medial basal hypothalamus and also led to an increase in TRH content in the remainder of the hypothalamus (dorsal hypothalamus). Although pinealectomy by itself had no significant effect on the neuroendocrine-thyroid axis, this surgical procedure prevented the inhibition of serum thyroxin observed in blinded hamsters. Pinealectomy also prevented the increase in TRH content of medial basal and dorsal hypothalamus observed in blinded hamsters. The results are consistent with the view that the pineal gland has a CNS site of action and provide evidence that the anti-thyroid influence of the pineal gland can be explained by pineal inhibition of TRH release.

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Author and article information

Journal

Journal ID (publisher-id): HRE

Journal ID (nlm-ta): Horm Res Paediatr

Journal ID (doi): 10.1159/issn.1663-2818

Title: Hormone Research in Paediatrics

Publisher: S. Karger AG

ISSN (Print): 1663-2818

ISSN (Electronic): 1663-2826

Publication date Subscription-year: 1983

Publication date (Print): 1983

Publication date (Electronic): 26 November 2008

Volume: 17

Issue: 2

Pages: 108-113

Affiliations

Department of Anatomy, University of Manitoba School of Medicine, Winnipeg, Manitoba, Canada; Department of Medicine, Louisiana State University Medical Center, New Orleans, La., USA

Article

Publisher ID: 179684 Other ID: Horm Res 1983;17:108–113

DOI: 10.1159/000179684

PubMed ID: 6404746

SO-VID: 1dd4c56e-52ae-450a-b6e4-acfa15f588ae

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 : 14 January 1982

Date accepted : 06 July 1982

Page count

Pages: 6

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