This book is based on papers presented at a Symposium held in Seoul, Korea in 1992. The idea for the symposium developed naturally from work in which Professor Yung E Earm, at Seoul National University, had been involved both in my laboratory in Oxford and in his own laboratory in Seoul concerning the possible role of certain amino acids, like taurine that are strongly concentrated by the cells of the heart, and the relationship between such acids and membrane ionic currents. The first obvious question was whether it is possible to identify the transport mechanisms involved for taurine and whether they are electrogenic. The second question is what function could be served by such processes: does taurine play an essential role in cardiac tissue and is this important in protecting the heart from disease? With his colleagues in the Korean Physiological Society, Professor Earm set about the task of fmancing and organizing a meeting at which some of the world's leading cardiac electrophysiologists and taurine specialists could discuss these questions. The fmance was generously provided by the Dong-A Pharmaceutical Company, one of the leading scientific companies in Korea.

This volume comprises the edited proceedings of the International Taurine Sympo sium held in Osaka, Japan, in June 1995, as a Satellite Symposium of the 15th Biennial of the International Society for Neurochemistry. This Taurine Symposium was the Meeting latest in a series held since 1975 at approximately two-year intervals by an informal group of international researchers. It attracted contributions from 20 countries, ranging from Armenia via Finland and Spain to the United States. Some 121 participants attended. The Symposium was organized and chaired by Junichi Azuma, University of Osaka. Other members of the Organizing Committee in Japan consisted of Kinya Kuriyama and Masao Nakagawa, both from the Kyoto Prefectural University of Medicine, and Akemichi Baba, from Osaka University. The Committee had to contend with the disaster of the Kobe earthquake, which struck on January 21. The epicenter was only around 25 miles from the meeting site, and the quake demolished the home of one Committee member. Despite this unnaturally natural handicap, the participants experienced a superbly organized meeting, one which more than maintained the high social and scientific standards established for this series. In his Welcome Message, Dr. Azuma listed a threefold objective for the Symposium: To provide a forum for the interdisciplinary exchange of information on taurine; to give an opportunity for renewing old friendships and making new friends; and to promote coopera tion among participants from around the world.

The Taurine Symposium- "Taurine: Beginning the 21'' Century"- was held September 20-23, 2002, on the beautiful island of Kauai in Hawaii. The headquarters of the meeting was the Radisson Kauai Beach Resort. This international meeting was attending by approximately 80 individuals from 23 nations and 4 continents. Seventy-five papers were presented either as platform presentations or poster presentations. Taurine, first isolated from ox bile in 1827 by Tiedemann and Gmelin and named in 1838 by Demarcay, became of significant scientific interest in 1968 when the first extensive review article was published by Jacobsen and Smith. Interest in taurine grew exponentially after 1975 when the first taurine symposium was organized by Ryan Huxtable in Tucson, Arizona. Since that date, taurine symposia have been held approximately every two years held in various cities and resort areas around the world. Taurine investigators have had the privilege of attending these scientific meetings on three continents - Asia, Europe, and North America. Since the initial meeting in 1975, a central question addressed during many of the symposia has been: "What is physiological, pharmacological, nutritional, and pathological role of taurine?". Although taurine has been established as an important osmolyte, it appears to affect many other biological processes. However, the exact mechanism(s) by "which taurine acts" has not yet been definitively answered. In Kauai, the patticipants discussed many topics and asked many questions regarding the role and actions of taurine.

Proceedings of the International Taurine Symposium '97: Neurochemistry, Biochemistry, and Pharmacology held in Tucson, Arizona, July 15-19, 1997

Taurine, or 2-aminoethane sulfonic acid, has long been known to be the major organic product formed from the breakdown of the sulfur-containing amino acids, methionine and cysteine. It is excreted as such in the urine or as bile acid conjugates in the bile. Research over the last 25 years, however, has uncovered an amazing variety of phenomena involving taurine. Despite the fact that the mechanism of action of taurine in some of these phenomena remains to be elucidated, it is clear that taurine is of far more physiological relevance than being the mere metabolic debris of sulfur amino acid catabolism. It also has numerous pharmacological actions that are beginning to be developed, as exemplified by some of the studies reported in this volume. This volume reports the proceedings of the latest of a series of international symposia, continuing on from the initial meeting held in Tucson, Arizona, in 1975. The latest symposium was the first to be held in Germany, in Cologne from August 29 through September 1, 1993. It continued the multidisciplinary approach that has been the norm for taurine symposia. We hope the publication of the proceedings will stimulate further investigations on this simple but fascinating compound.

Taurine (2-aminoethanesulfonic acid) is an enigmatic compound abounding in animal tissues. It is present at relatively high concentrations in all electrically excitable tissues such as brain, sensory organs, heart, and muscle, and in certain endocrine glands. Some of its physiological functions are already established, for example as an essential nutrient during development and as a neuromodulator or osmolyte, but the cellular mechanisms are still mostly a matter of conjecture. Moreover, there are a number of other putative functions of taurine less well known at present. Taurine 7 contains the proceedings of the 16th International Taurine Meeting. This meeting is a multidisciplinary symposium, with participants presenting different fields of biological science. This volume focuses on all aspects of taurine research from immunology and its effect on health to chemistry and biochemistry, including future clinical applications.

This volume contains the proceedings of the 2nd World Conference of the International Society for Molecular Nutrition & Therapy. This conference was held on August 2-4, 1997, in Winnipeg, Canada. The goal of the conference was to advance our knowledge concerning the molecular events which link nutrition to various disease processes in the body. This volume represents an important compilation of unique articles addressing the molecular and cellular basis for the nutritional and therapeutic treatment of five general disease processes.

This special issue of Molecular and Cellular Biochemistry contains original research papers as well as invited reviews dedi cated, on the occasion of the 40th anniversary of the inauguration of the Heart Research Group in Berlin-Buch that today forms a part there of the Max Delbriick Center for Molecular Medicine, to Professor Albert Wollenberger, founder of the Heart Research Group and for 21 years its head. The papers in this issue are written by researchers working in the field of cardiovascular research who together with Albert Wollenberger share the belief that an integrative application of advances in molecular and cellular biology will lead to new concepts for treatment and prevention of cardiovascular diseases. We hope that this special will serve as a good source of information in this regard. We wish to thank all of the contributors for their help and cooperation. We also wish to thank Mrs. Verona Kuhle for her secretarial help. We are grateful to Dr. Naranjan S. Dhalla, Editor-in-Chief of Molecular and Cellular Biochemistry for his interest and encouragement, and for agreeing to publish this issue in honor of Albert Wollenberger. ROLAND VETTER and ERNST -GEORG KRAUSE Max Delbriick Center for Molecular Medicine, Robert-Rossle-StraBe 10, 13122 Berlin-Buch, Germany PART I CARDIAC DEVELOPMENT AND REGULATION Molecular and Cellular Biochemistry 163/164: 5-11, 1996. © 1996 Kluwer Academic Publishers.

Taurine (2-aminoethanesulfonic acid) is an enigmatic compound abounding in animal tissues. Some of its physiological functions are already established, but the cellular mechanisms are still mostly a matter of conjecture. The 15th International Taurine Meeting offered a multidisciplinary symposium, with participants representing a range of fields of biological science. Based on the proceedings of this meeting, Taurine 6: Taurine Today presents current research on Taurine by top scientists in the field.

The first Taurine Symposium organized by Dr. Ryan Huxtable and the late Dr. Andre Barbeau was held in Tucson, Arizona, in 1975. Since that auspici ous event, nine international symposia on the role of taurine in biology have taken place. The locations for these meetings have been Tucson (two times), Rome, Philadelphia, Tokyo, Vancouver, Mexico City, Helsinki, and Florence. In 1977, due to the large number of scientists in Japan who were interested in the role of this unique amino acid in biological systems, we organized the Japanese Research Society on Sulfur Amino Acids with the encouragement and financial assistance of the Taisho Pharmaceutical Co., Ltd (Tokyo). Annual meetings have been held, and the membership has expanded from 78 to 414 in 1987; the number of presentations has increased during this time span from 29 to 74. The symposium in Tokyo in 1982, "Sulfur Amino Acids, Biochemical and Clinical Aspects" [1], was held to celebrate the 5th Annual Meeting of our Society. I would like to emphasize that in Japan we have an active Research Society especially directed to the study of sulfur amino acids. We have published our own semi-annual journal entitled Sulfur Amino Acids. Our society is an inter disciplinary research society since taurine is a highly diversified compound that interconnects physiology, biochemistry, pharmacology, nutrition, and medicine. One exciting fringe benefit of taurine research and the society has been the fostering of contacts with distinguished scientists from many varied medical fields.