Multiple Sclerosis (MS) is an inflammatory, often progressive, and potentially disabling disease of the central nervous system. Onset of disease is usually between the ages of 15 and 50, with the incidence nearly twice as high in women. While the cause of MS is still unknown, the predominant theory is that it is an autoimmune disease, triggered by an unknown environmental factor that results in both loss of central nervous system myelin and degeneration of axons and neurons. Although there have been a number of publications addressing different aspects of MS treatment in the neurological literature, there is a dearth of material on MS designed for internists and primary care physicians, who are often the first to see patients presenting with symptoms of MS. Therefore, this concise, clinically focused volume will serve as a valuable resource tailored to the specific needs of internists and primary care physicians. Part of the Oxford Neurology Library, this highly practical pocketbook covers current approaches and new developments in the diagnosis, treatment and management of MS, including both early and advanced stages of the disease. The book offers in-depth coverage of special populations, as well as the more unusual manifestations of MS, which are less familiar to the internal medicine audience. It will also address the role of imaging studies in the diagnosis, differential diagnosis and monitoring of the progression of MS. In addition to providing up-to-date information on pharmacological therapies for MS, the book also describes an array of non-pharmacological treatment options.

Recent advances in molecular biology have shown GTPases and phosphoproteins to be the paramount molecular switches utilized intracellularly in biological systems. The origins of the GTPase switch appear to be almost as ancient as life itself, and through evolution nature has adapted this switch to a variety of purposes. In this two-volume work a broad survey of the major classes of GTPases is presented. The role of GTPases in ensuring accuracy during protein translation, a new look at the trimeric G-protein cycle, the molecular function of ARF in vesicle coating, the emerging role of the dynamin family in vesicle transfer, GTPases which activate GTPases during nascent protein translocation, and the many roles of ras-related proteins in growth, cytoskeletal polymerization, and vesicle transfer, are all described in 80 chapters by the leading authorities in their fields. Both detailed knowledge of specific systems or proteins and general principles of structure and function are offered. Much of this information has never been published before. At the rate the extended family of GTPases is growing it becomes increasingly unlikely that we will again get it to sit for a group portrait such as this. Therefore, the volume has the chance to become "the" reference work for GTPases.

The purpose of the present volume, the first of two on the pharmacology, biochemistry, and physiology of cyclic nucleotides, is to provide a comprehensive and up-to-date anthology on the nature and role of these important chemical regulators. Each of the chapters is the work of internationally known researchers who present a lucid and detailed review of their subject and not merely a single laboratory's viewpoint. The chapters emphasize critical assessments of the field rather than mere listings of experimental findings. By so doing, the contributors present the role of cyclic nucleotides in relationship to other intracellular regulators. Each chapter begins with a detailed summary to allow the reader to obtain a rapid overview of subsequent material. In addition, there are extensive bibliographies and a detailed subject index. Wherever pertinent, the chapters contain sections on drug mechanisms, physiological relevance, and disease processes. The Volume is divided into two sections, each beginning with an overview written by Professors T. W. RALL and P. GREENGARD, respectively. The first section focuses on the detailed pharmacology and chemistry of cyclic nucleotides, including their formation, degradation, measurement, and interaction with various modulatory agents, such as receptors and calcium. The second section is concerned with the biochemistry of protein phosphorylation, a process which appears to be one of the most important mechanisms for the intracellular expression of cyclic nucleotide action in eukaryotic cells.