:Z] c~ ::3 ---< Ct) / " ~ i , 3 ~ Ct) 0 ..~ Ct) i Z --I / t~ I C~ m --I I rn Z --I < Z m O- r" Z C m C:: m !11 :Z] c~ ::3 ---< Ct) / " ~ i , 3 ~ Ct) 0 ..~ Ct) i Z --I / t~ I C~ m --I I rn Z --I < Z m O- r" Z C m C:: m !11 This Page Intentionally Left Blank ADVANCES IN DRUG RESEARCH VOLUME 27 Edited by BERNARD TESTA School of Pharmacy, University of Lausanne Lausanne, Switzerland and URS A. MEYER Institute of Pharmacology University of Basel, Basel Switzerland ANTIDIABETIC AGENTS Recent Advances in their Molecular and Clinical Pharmacology by H. P. T. Ammon, H. U. H~iring, M. Kellerer, H. Laube, L. Mosthaf, E. J. Verspohl and M. A. Wahl ACADEMIC PRESS Harcourt Brace & Company, Publishers LONDON SAN DIEGO NEW YORK BOSTON SYDNEY TOKYO TORONTO ACADEMIC PRESS LIMITED 24-28 Oval Road LONDON NWl 7DX U.S. Edition Published by ACADEMIC PRESS INC. San Diego, CA 92101 This book is printed on acid-free paper Copyright � 9 1996 ACADEMIC PRESS LIMITED All rights reserved No part of this book may be reproduced or transmitted in any form or by any means, electronic or mechanical including photocopying, recording or any information storage and retrieval system without permission in writing from the publisher A catalogue record for this book is available from the British Library ISBN 0-12-013327-X Typeset by Keyset Composition, Colchester, Essex Printed in Great Britain by Hartnolls Ltd, Bodmin, Cornwall CONTENTS CONTRIBUTORS . . . . . . . . . . . . . . . . . . ix FOREWORD . . . . . . . . . . . . . . . . . . . . xi PREFACE . . . . . . . . . . . . . . . . . . . . xiii ABBREVIATIONS . . . . . . . . . . . . . . . . . . XV Introduction . . . . . . . . . . . . . . . . . . . 1 Regulation of Glucose Homoeostasis 1 Introduction . . . . . . . . . . . . . . . . . . 3 2 Effect of Insulin Deficiency . . . . . . . . . . . . . 7 3 Regulation of Glucose Homoeostatis in Type-I Diabetes MeUitus (IDDM) . . . . . . . . . . . . . . . . . 9 4 Regulation of Glucose Homoeostasis in Type-II Diabetes Mellitus (NIDDM) . . . . . . . . . . . . . . . . 13 Clinical Aspects of Diabetes Mellitus 1 Type-I Diabetes Mellitus . . . . . . . . . . . . . . 17 2 Type-II Diabetes Mellitus . . . . . . . . . . . . . . 21 Mechanisms of Insulin Action 1 Insulin Actions . . . . . . . . . . . . . . . . . 25 2 Insulin Receptor . . . . . . . . . . . . . . . . . 26 3 Signal Transduction . . . . . . . . . . . . . . . . 32 4 Effector Systems of Insulin Signals: A Limited Selection . . . . 42 Therapeutic Use of Insulin 1" Chemistry . . . . . . . . . . . . . . . . . . . 50 2 Preparations . . . . . . . . . . . . . . . . . . 50 3 Application of Insulins . . . . . . . . . . . . . . . 52 4 Pharmacokinetics . . . . . . . . . . . . . . . . . 53 5 Toxic Effects . . . . . . . . . . . . . . . . . . 55 6 Side Effects . . . . . . . . . . . . . . . . . . 55 7' Clinical Studies of Insulin-replacement Therapy . . . . . . 69 vi CONTENTS The Secretory Machinery of Insulin Release 1 Introduction . . . . . . . . . . . . . . . . . . 77 2 Route by which Initiators and Modulators Reach the B-Cell . . 78 3 Initiation of Insulin Secretion . . . . . . . . . . . . . 79 4 Modulation of Insulin Secretion via Adenylate Cyclase and Phospholipase C (PLC) . . . . . . . . . . . . . . 92 5 Concept of Initiation and Modulation of Insulin Secretion . . . 106 Compounds Acting on Insulin Secretion: Sulphonylureas 1 Chemical Structure . . . . . . . . . . . . . . . . 108 2 Actions . . . . . . . . . . . . . . . . . . . . 108 3 Pharmacokinetics . . . . . . . . . . . . . . . . 117 4 Toxic Effects . . . . . . . . . . . . . . . . . . 121 5 Side Effects . . . . . . . . . . . . . . . . . . 122 6 Interaction with Other Drugs . . . . . . . . . . . . . 127 7 Clinical Studies . . . . . . . . . . . . . . . . . 129 Compounds Acting on Glucose Uptake: Biguanides 1 Chemistry . . . . . . . . . . . . . . . . . . . 137 2 Pharmacology . . . . . . . . . . . . . . . . . . 138 3 Pharmacokinetics . . . . . . . . . . . . . . . . . 142 4 Toxic Effects . . . . . . . . . . . . . . . . . . 144 5 Side Effects . . . . . . . . . . . . . . . . . . 144 6 Interactions with Other Drugs . . . . . . . . . . . . 146 7 Clinical Studies . . . . . . . . . . . . . . . . . 146 Compounds Acting on Glucose Absorption 1 Guar . . . . . . . . . . . . . . . . . . . . . 151 2 Acarbose . . . . . . . . . . . . . . . . . . . 159 Aldose Reductase Inhibitors as New Antidiabetic Drugs 1 Chemistry . . . . . . . . . . . . . . . . . . . 171 2 Functions of Aldose Reductase . . . . . . . . . . . . 172 3 Action of Aldose Reductase Inhibitors . . . . . . . . . . 173 4 Pharmacokinetics . . . . . . . . . . . . . . . . . 175 5 Pathological Changes in the Pharmacokinetics . . . . . . . 176 6 Toxic and Side Effects . . . . . . . . . . . . . . . 176 CONTENTS vii 7 Interaction with Other Drugs . . . . . . . . . . . . 177 8 Clinical Trials . . . . . . . . . . . . . . . . . . 177 Conclusions . . . . . . . . . . . . . . . . . . . 179 References . . . . . . . . . . . . . . . . . . . 181 SUBJECT INDEX . . . . . . . . . . . . . . . . . . . 215 CUMULATIVE INDEX OF AUTHORS . . . . . . . . . . . . . 229 CUMULATIVE INDEX OF TITLES . . . . . . . . . . . . . . 233 This Page Intentionally Left Blank CONTRIBUTORS H. P. T. AMMON, Lehrstuhl Pharmakologie, Pharmazeutisches Institut, Universitiit Tiibingen, Auf der Morgenstelle 8, D-72076 Tiibingen, Ger- many H. U. HA, RIN6, Institut fiir Diabetes-Forschung, Krankenhaus Schwabing, KOlner Platz 1, D-80804 Miinchen, Germany M. KELLERER, Institut fiir Diabetes-Forschung, Krankenhaus Schwabing, KOlner Platz 1, D-80804 Miinchen, Germany H. LAUBE, Medizinische Klinik der Universitiit Gieflen, Rodthohl 6, D-35392 Gieflen, Germany L. MOSTHAF, Institut for Diabetes-Forschung, Krankenhaus Schwabing, KOlner Platz 1, D-80804 Miinchen, Germany E. J. VERSPOHL, Institut fiir Pharmazeutische Chemie, Hittorfstrasse 58-62, D-48149 Miinster, Germany M. A. WAHL, Lehrstuhl Pharmakologie, Pharmazeutisches Institut, Univer- sitiit Tiibingen, Auf der Morgenstelle 8, D-72076 Tiibingen, Germany