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Somatostatin: Basic and Clinical Status PDF

362 Pages·1987·33.88 MB·English
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SOMATOSTATIN Basic and Clinical Status SERONO SYMPOSIA, USA Series Editor: James Posillico SOMATOSTATIN: Basic and Clinical Status Edited by Seymour Reichlin ACROMEGALY: A Century of Scientific and Clinical Progress Edited by Richard J. Robbins and Shlomo Melmed A Continuation Order Plan is available for this series. A continuation order will bring delivery of each new volume immediately upon publication. Volumes are billed only upon actual shipment. For further infor mation please contact the publisher. SOMATOSTATIN Basic and Clinical Status Edited by Seymour Reichlin Tufts University Boston, Massachusetts SPRINGER SCIENCE+BUSINESS MEDIA, LLC Library of Congress Cataloging in Publication Data International Conference on Somatostatin (1986: Washington, D.C.) Somatostatin: basic and clinical status. "Proceedings of the International Conference on Somatostatin, held May 6-8, 1986 in Washington, D.C."-T.p. verso. "Serono Symposia, USA"-Cover. Includes bibliographies and indexes. 1. Somatostatin-Congresses. I. Reichlin, Seymour, 1924- . II. Serono Symposia, USA. III. Title. [DNLM: 1. Somatostatin-congresses. WK 515 15875 1986] QP572.S59158 1986 612'.015756 87-7923 ISBN 978-1-4684-5328-7 ISBN 978-1-4684-5326-3 (eBook) DOI 10.1007/978-1-4684-5326-3 Proceedings of the International Conference on Somatostatin, held May 6-8, 1986, in Washington, D.C. The views expressed in this volume are the responsibility of the named authors. Great care has been taken to maintain the accuracy of the information contained in the volume. However, neither Plenum Press, Serono Symposia, USA, nor the editors can be held responsible for errors or any consequences arising from the use of information contained herein. Some of the names of products referred to in this book may be registered trademarks or proprietary names, although specific references to this fact may not be made; however, the use of a name without designation is not to be construed as a representation by the publisher or editors that it is in the public domain. In addition, the mention of specific companies or of their products or proprietary names does not imply any endorsement or recommendation on the part of the publisher or editors. © 1987 Springer Science+Business Media New York Originally published by Plenum Press, New York in 1987 Softcover reprint of the hardcover 1st edition 1987 All rights reserved No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, microfilming, recording, or otherwise, without written permission from the Publisher SCIENTIFIC COMMITTEE Seymour Reichlin, M.D., Ph.D., Chai~an Tufts University Boston, MA John Gerich, M.D. Mayo Clinic Rochester, MN Richard H. Goodman, M.D., Ph.D. Tufts University Boston, MA Yogesh C. Patel, M.D., Ph.D. McGill University Montreal, Canada Roger Unger, M.D. University of Texas Dallas, TX Klaus-Henning Usadel, M.D. University of Heidelberg Mannheim, West Germany Tadataka Yamada, M.D. University of Michigan Ann Arbor, MI ORGANIZING SECRETARIES Ching Lau, Ph.D. James T. Posillico, Ph.D. Serono Symposia, USA Randolph, MA v PREFACE The discovery of hypothalamic factors that inhibited growth hormone secretion and of pancreatic factors that inhibited insulin secretion were the first clues to the existence of somatostatin. During the course of efforts to isolate growth hormone releasing factor, Krulich, McCann and Dhariwal found that hypothalamic extracts contained a potent inhibitor of growth hormone secretion. They postulated that growth hormone secretion was under a dual control system, one inhibitory and the other excitatory (I) . In studies being carried out at about the same time, Hellman and Lernmark found a factor in pancreatic extracts that inhibited insulin secretion (2). They postulated that islet cell function was regulated by local hormonal factors. With the isolation and chemical characterization of somatostatin by Brazeau and colleagues (3), and the availability of relatively large amounts of the synthetic peptide for research, it has been possible to demonstrate that both predictions were true. Subsequent work revealed that somatostatin, as initially isolated (somatostatin 14), was but one of several related peptides, part of a multigene family, with tissue specific processing. Many of the details of biosynthesis and genetic control have been worked out, and this molecule has served many workers as a model gut-brain peptide for detailed study. The peptides are widely distributed in tissues and exert an extraordinary range of effects on most glandular secretions, both internal and external. Further, they are present in the central nervous system where they exert a number of physiological effects, and are present in the gastrointestinal tract where they regulate a number of functions. The development of potent analogues, with desirable properties, has led to new advances in the pharmacotherapy of endocrine and gastrointestinal disease. The extraordinary range of distribution and actions of the somato statin family of peptides continues to stimulate intense scientific interest and endeavor. Ongoing research has been reviewed in a number of publications (4-9), and three international symposia have been held on this topic: the first in 1977 in Freiberg, Germany (10), the second in 1981 in Athens, Greece (11), and the third in 1984 in Montreal, Canada (12). This International Conference on Somatostatin, which took place in Washington, DC, May 6-8, 1986, brought into focus the current status of knowledge in major areas of somatostatin research. The topics covered included the biosynthesis and processing of the peptide, mechanisms of action, an assessment of the role of somatostatin in central nervous system function and disease, the role of somatostatin in regulation of gastrointestinal function, and a critical summary of the current thera peutic uses of somatostatin and its analogues for the treatment of gastro intestinal bleeding, acromegaly, diabetes, and functioning gastrointes tinal tumors. In addition to presenting an up-to-the-minute understanding of the current advances in somatostatin research, this volume captures the sense of excitement felt by leading investigators in the field. vii REFERENCES 1. Krulich L, Dhariwal APS, McCann SM. Stimulatory and inhibitory effects of purified hypothalamic extracts on growth hormone release from rat pituitary in vitro. Endocrinology 1968; 83:783-90. 2. Hellman B, Lernmark A. Inhibition of the in vitro secretion of insulin by an extract of pancreatic A-I cells. Endocrinology 1969; 84:1484-7. 3. Brazeau P, Vale W, Burgus R, et a!. Hypothalamic peptide that inhibits the secretion of immunoreactive pituitary growth hormone. Science 1973; 179:77-9. 4. Gerich JE. Somatostatin. In: Brownlee M, ed. Handbook of diabetes mellitus. New York: Garland Publishing, Inc., 1981; 1:297-354. 5. Arimura A, Fishback JB. Somatostatin: regulation of secretion. Neuroendocrinology 1981; 33:246-56. 6. Gottesman IS, Mandarino LJ, Gerich JE. Somatostatin. In: Cohen M, Foa P, eds. Special topics in endocrinology and metabolism. New York: Alan R. Liss, 1982:177-243. 7. Reichlin S. Somatostatin. In: Krieger DT, Brownstein MJ, Martin JB, eds. Brain peptides. New York: John Wiley, 1983:711-52. 8. Reichlin S. Somatostatin. New Engl J Med 1983; 309:1495-1501, 1556-63. 9. Patel Y, Srikant C. Somatostatin. Annu Rev Physiol 1986; 48:551-67. 10. Gerich JE, Raptis S, Rosenthal J, eds. Somatostatin symposium. Metabolism 1978; 28:1129-1469. 11. Raptis S, Rosenthal J, Gerich JE, eds. 2nd international symposium on somatostatin. Germany: Attempto Verlag Tubingen GmbH, 1984. 12. Patel JC, Tannenbaum GS, eds. Somatostatin. New York: Plenum Press, 1985. viii CONTENTS I. BIOSYNTHESIS AND PROCESSING 1. Regulation and Diversity of Peptide Hormone Gene Expression. • 3 Joel F. Habener 2. Structure and Regulation of the Rat Somatostatin Gene 13 Jack E. Dixon, Timothy E. Hayes, Marie Tavianini, Bernard A. Roos, and Ourania Andrisani 3. Regulation of Somatostatin Gene Expression by Cyclic AMP 21 Richard H. Goodman, Gail Mandel, Kevin A. Sevarino, and Marc R. Montminy 4. Pep tides Derived from Mammalian Prosomatostatin • • • • • • • • 33 Robert Benoit 5. Expression of Preprosomatostatin in Foreign Cells: Secretion of Mature Somatostatin by Yeast (Saccharomyces Cerevisiae) ••••••• • • • • • • 51 Dennis Shields, Reza Green, Michael Schaber, and Richard Kramer 6. Cotranslational and Posttranslational Proteolytic Processing of Preprosomatostatin-I and Preprosomatostatin-II in Intact Islet Tissue • • • • • • • • • • • • • • . 59 Bryan D. Noe, Robert B. Mackin, John K. McDonald, Philip C. Andrews, Jack E. Dixon, and Joachim Spiess 7. Environmental Regulation of Neurotransmitter Phenotypic Expression in Sympathetic Neurons • • • • • • • • 71 John A. Kessler II. MECHANISMS OF ACTION 8. Side Chain Conformations of Somatostatin Analogs 'fuen Bound to Receptors •••• • • • • • • • • • • • • • • • • 83 Ruth F. Nutt, C. Dylion Colton, Richard Saperstein, and Daniel F. Veber 9. Somatostatin Receptor: Evidence for Functional and Structural Heterogeneity • • • • • • • • • • • 89 Coimbatore B. Srikant and Yogesh C. Patel ix 10. Structural Analysis of Somatostatin Receptors 103 John A. Williams and Christiane Susini 11. Mode of Action of Somatostatin in Islet B-Cells: Influence on Glucose-. L-isoleucine- and Glyburide-Induced Electrical Activity • • • • • • • • • • • • • • • • • III Caroline S. Pace 12. Mechanisms by Which Somatostatin Inhibits Pituitary Hormone Release • • • • • • • • • • • • 121 Agnes Schonbrunn and Bruce D. Koch 13. Molecular Mechanisms of Somatostatin Inhibition of Hormone Release From AtT-20 Ce11s • • • • • • • • • • 137 Lawrence C. Mahan and Terry Reisine III. ROLE OF SOMATOSTATIN IN NERVOUS SYSTEM FUNCTION AND CONTROVERSIES IN SOMATOSTATIN RESEARCH 14. Regulation of Hypothalamic Somatostatin Secretion • 149 Richard Robbins. M.D. 15. Somatostatin and Behavior: Preclinical and Clinical Studies ••••• 157 • ••0 ••••••• Charles B. Nemeroff. Thomas J. Walsh. and Garth Bissette 16. Physiological Significance of Somatostatin in Growth Hormone Regulation • • • • • • • • • • • • • • • • • • • • • • 169 Gloria Shaffer Tannenbaum 17. Somatostatin and Depression ••••••••••• 183 David R. Rubinow. Robert M. Post. Candace Davis. and Allen Doran 18. Cytoprotection by Somatostatins • • • • • • • • • • 193 K. H. Usadel. H. Kessler. G. Rohr. K. Kusterer. K. D. Palitzsch. and U. Schwedes 19. Evidence for Paracrine Function of Somatostatin 201 Werner Creutzfeldt 20. Evidence for the Endocrine Role of Somatostatin • • • • • • •• 209 Volker Schusdziarra IV. SOMATOSTATIN IN GASTROINTESTINAL FUNCTION 21. Gut Somatostatin 221 Tadataka Yamada 22. Regulation of Somatostatin Release From Dispersed Canine Fundic D-Cells •••••••••• 229 Tsutomu Chiba. Jung Park. and Tadataka Yamada 23. Antral Somatostatin: A Paracrine Regulator of Gastrin Secretion • • • • • • • • 239 G. M. Makhlouf. M.D •• Ph.D. x

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