Biochemistry, Molecular Biology, and Physiology of Phospholipase A2 and Its Regulatory Factors


Book Description

During the past decade there has been a dramatic expansion of our knowledge on phospholipases in general, and phospholipase A2 (PLA2) in particular. Progress in this field has been evident on many fronts, with novel information rapidly accumulating in the literature regarding the chemistry and molecular biology of this enzyme and its role in many important physiological processes. These include cellular signal transduction via the G-protein cycle, and in the generation of many cellular mediators, such as the platelet activating factor (PAF) and the eicosanoids that participate in the initiation and propagation of inflammation, to mention a few. This symposium was organized to obtain an overview of current investigations on this enzyme from the standpoint of its chemistry, molecular biology and physiology. Another important focus of this symposium concerns the regulation of PLA2, including endogenous and synthetic inhibitors and activators of this enzyme. To review these important areas in PLA2 research we invited scientists who made significant contributions in this field. The papers in this volume are organized to emphasize the recent advances in several areas of investigation, including: (I) the structure and mechanism of action of PLA2, (2) mechanism of activation of PLA2, (3) molecular biology, physiology and endogenous inhibitors of this enzyme and finally, (4) clinical investigations emphasizing the pathophysiological role of this enzyme in human diseases. The first article in this volume is by Dr.













Chemical and Structural Approaches to Rational Drug Design


Book Description

This book is the first to provide both a broad overview of the current methodologies being applied to drug design and in-depth analyses of progress in specific fields. It details state-of-the-art approaches to pharmaceutical development currently used by some of the world's foremost laboratories. The book features contributors from a variety of fields, new techniques, previously unpublished data, and extensive reference lists.




Coronaviruses and their Diseases


Book Description

Interest in the coronaviruses has never been greater. Their economic impact is considerable as they infect humans, livestock, poultry and companion animals. Murine hepatitis virus (MHV) infection of the mouse and rat central nervous systems are the subject of intense study; these investigations are providing insights into the potential role of viruses in human neurological diseases and, more generally, into mechanisms causing neurological damage. The single-stranded, positive-sense RNA genomes of two species of these enveloped viruses (IBV and MHV) have been cloned completely and one of them (lBV) sequenced in its entirety, revealing a genome size of some 27000 nucleotides. This has made possible more incisive investigations into the nature of those polypeptides, encoded by more than half of the genome, which are likely to contribute, in the main, to RNA polymerase/replicase activity. Intriguingly, ribosomal frameshifting is exhibited within the mRNA coding for these polypeptides. The cloning/sequencing phase of coronavirology for which the 1980's will be partly remembered, has provided a sound framework for furthex: studies of the virus structural proteins and also some provocative insights relevant to these studies. The large spike glycoprotein(s), responsible for membrane fusion and bearing important antigenic sites, varies amazingly in length and composition both within as well as between coronavirus species. Receptors on host cells have been identified. The integral membrane glycoprotein (M) has been shown to use internal hydrophobic sequences to direct translocation within membranes.




Fibrinogen, Thrombosis, Coagulation, and Fibrinolysis


Book Description

The International Scientific Symposium on Fibrinogen, Thrombosis, Coagulation, and Fibrinolysis was held in Academia Sinica, Taipei, Taiwan, Republic of China, on August 30 - September 1, 1989. This Symposium has provided a forum for the free exchange of information in this important and rapidly advancing research field. This proceedings volume provides a published record of 46 papers presented at the Symposium. The sponsors have exerted no influence on the scientific opinions or positions of the participants in the Symposium. It is hoped that this Symposium will stimulate further worldwide cooperation and collaboration in these vital fields for the benefit of all human kind. This volume is composed of four parts. The first part consists of 8 papers on Fibrinogen and Fibrin: Biochemistry, Molecular Biology, and Physiology. The second part contains 16 papers on Coagulation and Fibrinolysis: Biochemistry, Molecular Biology, and Physiology. The third part has 10 papers on Cardiovascular Cell Biology: Biochemistry, Molecular Biology, and Physiology. The fourth part comprises 12 papers on Clinical Studies of the Cardiovascular System: Thrombotic and Bleeding Disorders and Thrombolytic Therapy. The Author Index with addresses of all contributors and the Subject Index of all 46 papers are arranged at the end of this volume.




Tobacco Smoking and Atherosclerosis


Book Description

Atherosclerosis is the principal underlying cause of cardiovascular and cerebrovascular disease in people of the Western world. Cigarette smoking has been implicated in both the initiation and exacerbation of the atherosclerotic process. Data to support this implication derives primarily from epidemiologic studies where the relationship between the incidence of atherosclerosis in people who smoke cigarettes has been shown to have a strong correlation. There are few well established explanations for this phenomenon, and basic molecular, biochemical, and cellular mechanisms associated with smoking and the development of atherosclerosis remain both undefined and virtually unexplored. Even the epidemiologic correlation between cigarette smoking and the development of atherosclerosis needs further critical studies. It is known that individuals who do not smoke cigarettes develop athero sclerosis and it is also known that in people who smoke but have normal or low blood cholesterol/lipoprotein levels, the incidence of development of atherosclerosis is no different from that which is found in a non smoking population. Answers which explain such observations must address fundamental biological mechanisms. Toward this end, the purpose of this volume is to assemble, in a single publication, information which will address the questions; what basic cellular and/or molecular mechanisms are associated with the development of atherosclerosis and how does cigarette smoking influence such mechanisms to initiate or exacerbate the atherosclerotic process? Clearly, the development of atherosclerosis is a complex, multifactorial biological event.




Myoblast Transfer Therapy


Book Description

I am pleased to introduce this volume on Myoblast Transfer Therapy on behalf of the Muscular Dystrophy Association and all of its Advisory Committees. The international conference which led to this volume brought together leading basic scientists and clinical investigators for the purpose of coordinating the development of this new field in the fight against muscular dystrophy. The Muscular Dystrophy Association is the nation's most rapidly growing voluntary health agency in terms of its programs of patient care, research, and professional and public education. Success is attributable to its National Chairman, Jerry Lewis, to its effective corporate membership, and to the many physicians and scientists who give their time freely to advise on policies, to review grant applications, and to participate in meetings such as this. I should like to acknowledge a large number of other individuals to whom we are indebted: the broad segment of the American public which continually and generously supports our spectrum of services. The Muscular Dystrophy Association, next year, should raise in excess of $115,000,000. These contributions are derived from more than 10 million American families. These families are not only pledging their money but expressing their hopes that we will find answers to the tragic problem of neuromuscular disease. We are confident that the fruits of this meeting will move the frontier of research forward toward that goal.




Biochemistry of Lipids, Lipoproteins and Membranes


Book Description

Biochemistry of Lipids: Lipoproteins and Membranes, Volume Six, contains concise chapters that cover a wide spectrum of topics in the field of lipid biochemistry and cell biology. It provides an important bridge between broad-based biochemistry textbooks and more technical research publications, offering cohesive, foundational information. It is a valuable tool for advanced graduate students and researchers who are interested in exploring lipid biology in more detail, and includes overviews of lipid biology in both prokaryotes and eukaryotes, while also providing fundamental background on the subsequent descriptions of fatty acid synthesis, desaturation and elongation, and the pathways that lead the synthesis of complex phospholipids, sphingolipids, and their structural variants. Also covered are sections on how bioactive lipids are involved in cell signaling with an emphasis on disease implications and pathological consequences. - Serves as a general reference book for scientists studying lipids, lipoproteins and membranes and as an advanced and up-to-date textbook for teachers and students who are familiar with the basic concepts of lipid biochemistry - References from current literature will be included in each chapter to facilitate more in-depth study - Key concepts are supported by figures and models to improve reader understanding - Chapters provide historical perspective and current analysis of each topic