The Role Of The Renin Angiotensin System In The Central Nervous System

The Fourteenth Midwest Conference on Endocrinology and Metab olism, held at the University of Missouri - Columbia on September 28th and 29th, 1978, brought together several prominent researchers who are authorities on various aspects of the renin-angiotensin system. Each speaker presented an in-depth coverage of a topic related to his own area of expertise, including recent findings from his own research laboratory. Following each presentation thet:e was a general discussion of the material by the speaker and the audience. These presentations and the ensuing discussions are summarized in these published Proceedings. Traditionally the Midwest Conferences on Endocrinology and Metabolism have emphasized breadth as well as depth of coverage of the selected topic; the present Conference is no exception. Perusal of the titles of the presentations will reveal that the Conference dea1th with many different facets of the renin-angiotensin system, including the biochemistry, anatomy, physiology, and comparative endocrinology of this hormonal system, plus special areas of con sideration such as angiotensin receptors, angiotensin-converting enzyme, the control of renin release, angiotensin and aldosterone secretion, and the role of the renin-angiotensin system in the central nervous system. The selection of the renin-angiotensin system as the topic for the present conference was very timely because of the many noteworthy advances in this area in recent years, many by the participants in the Conference. The Editors are very appreciative of the excellent manuscripts which the speakers provided for these Proceedings.

Central Actions of Angiotensin and Related Hormones investigates the centrally mediated actions of angiotensin and related hormones in the central nervous system (CNS). Topics covered include angiotensin I converting enzyme activity in the choroid plexus and in the retina; peptide regulation of neuronal excitability; effects of angiotensin-II and angiotensin-III on catecholamine biosynthesis; and humoral kidney mediation of adrenal catecholamine response to hemorrhage. A systems analysis of CNS-angiotensin interaction is also presented. This book is comprised of 51 chapters and opens with a discussion on the results of initial studies undertaken at the University of Pittsburgh to probe the centrally mediated hypertensive response of angiotensin II. The following chapters explore angiotensin receptor sites and angiotensin antagonists, along with the mechanisms involved in changes of blood pressure elicited by hypothalamic stimulation. The effects of angiotensin-II and angiotensin-III on the biosynthesis of catecholamines are also analyzed. The last chapter looks at recommendations regarding the nomenclature of the renin-angiotensin system, especially with respect to the extrarenal tissue enzymes. This monograph will be a valuable source of information for biochemists, biologists, physiologists, and pharmacologists.

Cellular and Molecular Biology of the Renin-Angiotensin System provides the first review and update of the state-of-the-art cellular and molecular aspects of the renin-angiotensin system. The book presents detailed analyses from world experts on each component of this system, including future directions. Topics range from angiotensin II receptor subtypes to processing of renin to the use of transgenic animal models for studying the role of this system in hypertension. Cellular and Molecular Biology of the Renin-Angiotensin System is essential reading for physiologists of the renin-angiotensin system, endocrinologists, cardiovascular specialists, renal physiologists, and neurobiologists.

The Protective Arm of the Renin Angiotensin System: Functional Aspects and Therapeutic Implications is the first comprehensive publication to signal the protective role of a distinct part of the renin–angiotensin system (RAS), providing readers with early insight into a complex system which will become of major medical importance in the near future. Focusing on recent research, The Protective Arm of the Renin Angiotensin System presents a host of new experimental studies on specific components of the RAS, namely angiotensin AT2 receptors (AT2R), the angiotensin (1–7) peptide with its receptor Mas, and the enzyme ACE 2, which exert significant beneficial, health-promoting actions by counterbalancing the well-known harmful arm of the RAS with its classical angiotensin AT1 receptor. This innovative concept of the protective arm of the RAS, examined in this reference, represents an indispensable background and will be a strong support for biomedical students, researchers, cardiologists, surgeons, nephrologists, diabetologists, and endocrinologists, as well as any other physician or researcher concerned with RAS physiology, pathophysiology and clinical implications. Provides a complete understanding of the protective side of the Renin Angiotensin System (RAS) involving angiotensin AT2 receptor, ACE2, and Ang(1-7)/Mas receptor Combines the knowledge of editors who pioneered research on the protective renin angiotensin system including; Dr. Thomas Unger, one of the founders of AT2 receptor research; Dr. Ulrike M. Steckelings, who contributed significantly to first preclinical studies with a novel specific AT2-agonist, and Dr. Robson Santos who pioneered research on angiotensin-(1-7) and its receptor Mas. Shows that the protective RAS axes are able to ameliorate the course of several cardiovascular, renal, metabolic and neurological diseases Provides the basis for the understanding of a novel therapeutic approach to stimulate components of the protective arm of the RAS.

The renin-angiotensin system and the mechanisms regulating this system developed during the adaptive evolution of verte brates, along with many other systems involved in the in tegrated survival of the organism. Because animal species have evolved from common ancestral populations, a basis for the comparison of body structures and physiological processes ex ists among animal groups belonging to different classifications. The comparative approach provides a better understanding of the structure and function of adaptive systems and facilitates the development of general principles governing these systems among animal groups; further, this approach reveals significant characteristics specific to certain animal groups. As the evolu tion of adaptation of animals to environmental conditions is explored, directions for future research are suggested. In this book, advances in research on the renin-angiotensin system are described with emphasis on the comparative aspects. However, since studies on the renin-angiotensin system of birds, reptiles, amphibians and fishes are limited compared with those con ducted in mammals, in some chapters descriptions are con cerned primarily with mammals. It has taken a long time to write this volume, and the topic is a broad one, with new data always emerging; therefore, certain aspects, and sometimes the most recent information, may not be included. Chapters 1-3 and sections 8. 1-8. 4,8. 6, 8. 7 were written by H. K. ; Chapters 4-7 and Section 8. 5 by Y. T. ; Chapter 9 was written by both authors. H. Uemura, M. Nozaki, Y. Okawara, We are indebted to Drs.