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Over the past several decades, vanadium has increasingly attracted the interest of biologists and chemists. The discovery by Henze in 1911 that certain marine ascidians accumulate the metal in their blood cells in unusually large quantities has done much to stimulate research on the role of vanadium in biology. In the intervening years, a large number of studies have been carried out to investigate the toxicity of vanadium in higher animals and to determine whether it is an essential trace element. That vanadium is a required element for a few selected organisms is now well established. Whether vanadium is essential for humans remains unclear although evidence increasingly suggests that it probably is. The discovery by Cantley in 1977 that vanadate is a potent inhibitor of ATPases lead to numerous studies of the inhibitory and stimulatory effects of vanadium on phosphate metabolizing enzymes. As a consequence vanadates are now routinely used as probes to investigate the mechanisms of such enzymes. Our understanding of vanadium in these systems has been further enhanced by the work of Tracy and Gresser which has shown striking parallels between the chemistry of vanadates and phosphates and their biological compounds. The observation by Shechter and Karlish, and Dubyak and Kleinzeller in 1980 that vanadate is an insulin mimetic agent has opened a new area of research dealing with the hormonal effects of vanadium. The first vanadium containing enzyme, a bromoperoxidase from the marine alga Ascophyllum nodosum, was isolated in 1984 by Viltner.
"Volume 31, devoted solely to the role of vanadium in life processes, offers a comprehensive and timely account of this fascinating field by 37 distinguished, international authorities. Highlights the properties of the various oxidation states of vanadium, their affinity for biogenic ligands, the effects of vanadium species on enzyme activity, the role of vanadium in nitrogenases and haloperoxidases, and more."
Vanadium is named after Vanadis, the most aristocratic of Norse goddesses, who symbolises beauty and fertility - essential features of vanadium chemistry. It is a ubiquitous trace element, with a surprising range of biological functions. In Bioinorganic Vanadium Chemistry, Dieter Rehder addresses the major aspects of vanadium chemistry related to living organisms and the mutual impact between biological and inorganic vanadium chemistry. Topics covered include: the history, natural occurrence, distribution and impact of vanadium inorganic aspects of the function of vanadium in biological systems interaction of aqueous vanadate and vanadyl with biogenic ligands vanadium coordination compounds the vanadium-carbon bond methods of characterisation of biogenic and model vanadium systems (EPR and ENDOR for oxovanadium(IV); 51V NMR for vanadium(V); XAS) vanadium in ascidians and polychaeta worms the concentration of vanadium in the form of amavadin by Amanita mushrooms vanadate-dependent haloperoxidases vanadium and the nitrogen cycle vanadate as energiser for bacteria, and vanadophores medicinal aspectsm including the anti-diabetic potential of vanadium compounds interaction of vanadium with proteins and protein substrates vanadium and phosphate-metabolising enzymes Bioinorganic Vanadium Chemistry conveys the essential aspects of vanadium bioinorganic chemistry, making this book a valuable complement to more general bioinorganic chemistry texts and more specialized topical reviews for researchers and students alike.
The first comprehensive resource on the chemistry of vanadium, Vanadium: Chemistry, Biochemistry, Pharmacology, and Practical Applications has evolved from over a quarter century of research that concentrated on delineating the aqueous coordination reactions that characterize the vanadium(V) oxidation state. The authors distill information o
The publication of Vanadium: Biochemical and Molecular Biological Approaches is particularly timely as it exactly coincides with the centennial anniversary of the discovery of vanadium by Professor Henze, in the blood cells of an ascidian (tunicate) collected in Gulf of Naples in 1911. Vanadium, atomic number 23, covers a wide range of oxidation states (from -2 to +5) and has unpaired electrons. Depending on these properties, a wide variety of enzymes and compounds containing vanadium have been found and the biochemical behaviour of vanadium has been investigated extensively. This monograph provides not only the basic properties and recent advances of vanadium chemistry but also presents recent topics on hyper-accumulators of vanadium, enzymatic roles of vanadium, biochemical functions of vanadium and medicinal functions of vanadium, which have been discovered by Biochemical and Molecular Biological Approaches. Vanadium: Biochemical and Molecular Biological Approaches is aimed at pure and applied chemists, biochemists, pharmaceutical and medical scientists.
The papers in this volume comprise invited reviews as well as original research papers presented at the Vanadium Symposium held July 29-31, 1994. Vanadium is a trace element and its compounds have been shown to exert a wide variety of insulin-like effects including the ability to lower hyperglycemia in several experimental models of diabetes mellitus. Because of the possibility that vanadium compounds may be able to serve as potential therapeutic agents for the treatment of diabetes, and possibly other diseases, this trace element has attracted the attention of biomedical researchers from a variety of fields. The Vanadium Symposium 1994 was therefore organized to facilitate exchange of ideas and increase interaction among researchers of different disciplines actively engaged in studying the biological actions of vanadium compounds. The papers are written by leading vanadium researchers and are grouped into three main sections: the chemistry, biochemical and physiological aspects, and potential therapeutic use and toxic effects of vanadium compounds. A good source of information on vanadium chemistry and biology.
Vanadium has long been known to mimic or to enhance insulin activity. It was estimated that by the year 2025 about 300 million people would suffer from diabetes mellitus. Diabetic patients are also subject to other pathologies such as nephropathy, arterial and neurodegenerative diseases. Behind the purpose to produce a special review book in inorganic biochemistry in the area of vanadium compounds/vanadate species, is the increase interest of vanadium knowledge, not only in chemistry but also in biochemistry, biology, toxicology, pharmacology and medicine. It was a wonderful opportunity to bring together remarkable contributions from many people that are responsible, at least in part, for the actual knowledge of vanadium in biological systems, as well for many papers highly cited and for an entire generation of scientists in the field. Personally, I consider myself a beginner in the Biochemistry of Vanadium, (I obtained my first decavanadate solution 51V-NMR spectra by 1985, at the University of Coimbra), and a product of the outstanding group of scientists and teachers that lead the way about 25 years ago, at the late 70 ́s and early 80 ́s. They are truly responsible for the actual interest of vanadium in fascinating and different scientific fields of research. The present book can be divided in two main parts: vanadium chemistry/biochemistry and biology/pharmacology/medicine, within the 16 chapters that wipe away the frontiers of 10 different countries. A special attention is given to decavanadate structure and chemistry, biochemistry (effects in muscle contraction/regulation) and in vivo biological studies. Also noteworthy are the chapters describing studies in aquatic organisms such as the ecophysiology perspectives of vanadium accumulation by ascidians, the use of fishes and fish cells lines for understanding the processes of vanadium in biology, as an alternative to mammalian systems, pointing out to a different interface of research. Medicinal applications of vanadium are push forward in chapters focusing structure-activity relationship of anti-diabetic vanadium complexes, vanadium compounds as anti-tumour drugs and anti-parasitic agents, improving bioactive ligands activity through complexation with vanadium, osteogenic action of vanadium compounds and cytotoxicity, in order to make vanadium available and safe for clinical use. Milestones in the history of vanadium biochemistry are also the chapters about the redox profile of vanadium, the role of vanadium in bromoperoxidases, the vanadium binding proteins in ascidians and more recently decavanadate interactions with lipidic structures. Putting it all together, this special Vanadium Biochemistry book would not be so special without the contributions of eminent scientists around the world, although some have been recently retire, such as the esteemed Professor Ramasarma and the esteemed Professor Sakurai. Thanking to all the contributors of the Vanadium Biochemistry book, clearly a wide-ranging and in many aspects an educational book that reflects, at least in part, the versatile and fascinating biochemistry of vanadium.
The authors of this study on bio-inorganic chemistry seek to examine the importance of inorganic elements. They survey chemical and physical factors controlling the elements of life, discuss the functions of inorganic elements and examine the co-operative interaction in living systems.