In this study, an ultrastructural and immunohistochemical examination was carried out on the presence of an ‘atrial-natriuretic-peptide (ANP)-like factor’ in the myoblasts of the brachial myotome of chicken embryos at Hamburger and Hamilton stages 17 ± to 19. The results of the immunohistochemical study indicate that, at these stages of their development, the myoblasts of the brachial myotome show ANP immunoreactivity. The ultrastructural analysis of the myoblasts shows the presence of ‘granules’ or ‘secretory vesicles’, similar to the secretory granules which contain natriuretic peptides. The demonstration of immunoreactivity to ANP in the myotome and the specific localization of secretory vesicles in myoblasts, as the first evidence relating ANP with skeletal muscle development, reveal a new site at which an ANP-like factor may be synthesized. The hypothesis of a paracrine and/or autocrine function(s) during myogenesis is suggested.

Keywords:
Myogenesis, Myotome, Myoblast, Embryo, Immunohistochemistry, Atrial natriuretic peptide, Secretory granules, Chick
This content is only available via PDF.
© 1994 S. Karger AG, Basel
1994
Copyright / Drug Dosage / Disclaimer
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.
You do not currently have access to this content.