Merely three years after the discovery of endothelin, a large amount of information has been generated about the molecular biology, biosynthesis, biological actions and potential physiological and pathological importance of this unique peptide and its isoforms. This first book on endothelins summarizes the early events which lead to the discovery of endothelin, the progress made in understanding the peptide’s physiological role, and the current state-of-the-art in contemporary endothelin research. The book also discusses the potential significance of endothelins in health and disease, covers the potential role of the peptides in the integrated control of the cardiovascular system, and outlines future research directions. This comprehensive monograph is an indispensable reference for basic scientists and clinicians.