Hyaluronan

It was probably the French chemist Portes, who first reported in 1880 that the mucin in the vitreous body, which he named hyalomucine, behaved differently from other mucoids in cornea and cartilage. Fifty four years later Karl Meyer isolated a new polysaccharide from the vitreous, which he named hyaluronic acid. Today its official name is hyaluronan, and modern-day research on this polysaccharide continues to grow. Expertly written by leading scientists in the field, this book provides readers with a broad, yet detailed review of the chemistry of hyaluronan, and the role it plays in human biology and pathology. Twenty-seven chapters present a sequence leading from the chemistry and biochemistry of hyaluronan, followed by its role in various pathological conditions, to modified hylauronans as potential therapeutic agents and finally to the functional, structural and biological properties of hyaluronidases. Chemistry and Biology of Hyaluronan covers the many interesting facets of this fascinating molecule, and all chapters are intended to reach the wider research community. Comprehensive look at the chemistry and biology of hyaluronans Essential to Chemists, Biochemists and Medical researchers Broad yet detailed review of this rapidly growing research area

Hyaluronan biology is being recognized as an important regulator of cancer progression. Paradoxically, both hyaluronan (HA) and hyaluronidases, the enzymes that eliminate HA, have also been correlated with cancer progression. Hyaluronan, a long-chain polymer of the extracellular matrix, opens up tissue spaces through which cancer cells move and metastasize. It also confers motility upon cells through interactions of cell-surface HA with the cytoskeleton. Embryonic cells in the process of movement and proliferation use the same strategy. It is an example of how cancer cells have commandeered normal cellular processes for their own survival and spread. There are also parallels between cancer and wound healing, cancer occasionally being defined as a wound that does not heal. The growing body of literature regarding this topic has recently progressed from describing the association of hyaluronan and hyaluronidase expression associated with different cancers, to understanding the mechanisms that drive tumor cell activation, proliferation, drug resistance, etc. No one source, however, discusses hyaluronan synthesis and catabolism, as well as the factors that regulate the balance. This book will offer a comprehensive summary and cutting-edge insight into Hyaluronan biology, the role of the HA receptors, the hyaluronidase enzymes that degrade HA, as well as HA synthesis enzymes and their relationship to cancer. * Offers a comprehensive summary and cutting-edge insight into Hyaluronan biology, the role of the HA receptors, the hyaluronidase enzymes that degrade HA, as well as HA synthesis enzymes and their relationship to cancer * Chapters are written by the leading international authorities on this subject, from laboratories that focus on the investigation of hyaluronan in cancer initiation, progression, and dissemination * Focuses on understanding the mechanisms that drive tumor cell activation, proliferation, and drug resistance

Hyaluronan and its derivatives has developed very quickly in the last few years from a scientific novelty into an important new material for a diverse range of medical and biomaterial applications. This landmark conference focused on developments and applications in the use of hyaluronan in tissue repair and reconstruction, drug delivery systems, anti-cancer treatments and joint recovery and engineering. The entire range of hyaluronan progress is covered in depth by the more than 135 individual papers: Analytical chemistry Structural elucidation and basic chemistry Electron microscopy and atomic force microscopy Production, purification and characterisation Quality in production systems Chemical modification Derivatives and properties Cross-linking Free radical modification Physical characterisation Rheology Aggregation phenomena Interaction with water and solution properties Cell biology Control and regulation of HA synthases Cell surface chemistry HA cell receptors and cell signalling Interaction with proteins and other biological ligands Biophysical aspects Effects on pain receptors Neurobiology Role in organisation of extracellular matrix Role in development (embryogenesis): cell movement/migration Medical applications Uses in cartilage and wound repair Inflammation Wound regenerative healing Surgery and tissue engineering Viscosupplementation / osteoarthritis Viscoaugmentation and viscoprotection Anti-adhesion applications Brug delivery systems Binding onto tumour cells and metastases Outlines the proceedings of the landmark conference which focused on key developments and applications in the use of hyaluronan in tissue repair and reconstruction, among other uses The entire range of hyaluronan processes is dealt with in depth by more than 135 individual papers presented in two volumes Covers analytical chemistry, chemical modification, physical characterisation, cell biology and medical applications

This book addresses the structural and biological properties of the extracellular matrix component and glycosaminoglycan polymer hyaluronan (or hyaluronic acid, HA). The book discusses various aspects of HA biology, e.g., HA synthesis and degradation, as well as the role of HA in embryogenesis, development, and cell maintenance. The reader will learn about the role of HA in different tissues as well as its biological activities triggered by the interaction with different HA receptors. A closer look is had at the involvement of HA in human pathologies such as cancer, kidney fibrosis and wound healing. Biotechnological and biomedical applications for HA such as scaffold generation and drug delivery, including the novel synthetic sulphated HA are explored. This work will appeal to a wide readership within the extracellular matrix and hyaluronan field. It can serve as an introduction to the field for junior scientists but can also help senior scientists to gain a broader view of the field beyond their area of specialization. The series Biology of Extracellular Matrix is published in collaboration with the American Society for Matrix Biology and the International Society for Matrix Biology.

Advances in Cancer Research provides invaluable information on the exciting and fast-moving field of cancer research. Here, once again, outstanding and original reviews are presented on a variety of topics. This volume covers hyaluronan signaling and turnover. Provides information on cancer research Outstanding and original reviews Suitable for researchers and students

Presents state-of-the-art applications in hyaluronan research, from hyaluronan's physicochemical properties to its clinical role as a connective tissue marker and its surgical implications, particularly in ear, eye and orthopaedic surgery. Covers hyaluronan's synthesis and catabolism, its role in cells, its interactions with specific binding proteins, and its role in the embryonic nervous system.

Hyaluronic acid is an essential part of connective, epithelial and neural tissues, and contributes to cell proliferation and migration. It is used as a stimulating agent for collagen synthesis and is a common ingredient in skin-care products, a multi-billion dollar industry, as it is believed to be a key factor in fighting the aging process. Hyaluronic Acid: Production, Properties, Application in Biology and Medicine consists of six chapters discussing the various issues of hyaluronic acid research. In Chapter 1, a historical analysis recounts the discovery and milestones of the research leading to the practical applications of hyaluronan. Chapter 2 is dedicated to biological role of the hyaluronic acid in nature, in particular in the human body. The chapter starts from the phylogenesis of hyaluronic acid, then describes hyaluronan functions in human ontogenesis and especially the role which hyaluronan plays in extracellular matrix of the different tissues. Chapter 3 describes the methods to manufacture and purify hyaluronic acid, including the analytical means for assessing quality of the finished product. Chapter 4 discusses the structure and rheological properties of hyaluronic acid considering effects on conformation and biological properties related to molecular weight. In Chapter 5, the physical and chemical methods for modifying the structure of hyaluronan are discussed including cross-linking using bi-functional reagents, solid-phase modification and effects of the combined action of high pressures and shift deformation. The final chapter focuses on the products derived from hyaluronic acid, including therapeutics composed of modified hyaluronan conjugated to vitamins, amino acids and oligo-peptides. The biological roles and medical applications of this polysaccharide have been extensively studied and this book provides a wealth of scientific data demonstrating the critical role of hyaluronic acid and its promise as a multifaceted bio-macromolecule. Approaching hyaluronic acid from multiple angles, this book links relationships between its biological functions, structure and physical–chemical properties. It will be an invaluable resource to researchers, both industrial and academic, involved in all aspects of hyaluronan-based technologies.

The ballooning body of research devoted to hyaluronan (HA) reflects its enormous potential for various medical applications. There have been many successes of varying degrees in the development of medical products based on HA, but also some setbacks. While there is obviously ample information available on the chemistry and various properties of this macromolecule, Practical Aspects of Hyaluronan Based Medical Products is the first book devoted to systematically applying this knowledge to product development. Based on the author's extensive experience working with HA, this book explores in detail the chemistry, composition, formulation, testing, safety, effectiveness, quality control, and regulatory approval of HA medical products. It begins with a survey of the historical development and recent products based on hyaluronan. Subsequent chapters detail the rheological properties of the molecule and explore the chemical principles and methods forming the technical basis of product development, illustrated by more than 50 figures of chemical structures, reaction schemes, and rheological properties. Individual chapters then consider standards, tests, and analytical methods; safety of HA-based products for their indicated applications; and clinical performance, mechanism of action, and product characteristics. Practical Aspects of Hyaluronan Based Medical Products surveys FDA review documents as well as peer-reviewed journal articles to identify the elements essential to successful product development, namely, understanding the critical issues in the regulatory path and linking clinical performance of the products to their original design.