Physiology And Pathophysiology Of Iron In Humans

Iron Physiology and Pathophysiology in Humans provides health professionals in many areas of research and practice with the most up-to-date and well-referenced volume on the importance of iron as a nutrient and its role in health and disease. This important new volume is the benchmark in the complex area of interrelationships between the essentiality of iron, its functions throughout the body, including its critical role in erythropoiesis, the biochemistry and clinical relevance of iron-containing enzymes and other molecules involved in iron absorption, transport and metabolism, he importance of optimal iron status on immune function, and links between iron and the liver, heart, brain and other organs. Moreover, the interactions between genetic and environmental factors and the numerous co-morbidities seen with both iron deficiency and iron overload in at risk populations are clearly delineated so that students as well as practitioners can better understand the complexities of these interactions. Key features of the volume include an in-depth index and recommendations and practice guidelines are included in relevant chapters. The volume contains more than 100 detailed tables and informative figures and up-to-date references that provide the reader with excellent sources of information about the critical role of iron nutrition, optimal iron status and the adverse clinical consequences of altered iron homeostasis. Iron Physiology and Pathophysiology in Humans is an excellent new text as well as the most authoritative resource in the field.

For human beings, iron is an important trace element. It is required for various bodily processes such as cell growth and division, oxygen transport, various catalytic reactions, and oxidative metabolism. Human body requires only a small amount of iron on a daily basis. It must be consumed in a strictly monitored manner because there is no mechanism for excreting excess iron out of the body. Erythropoiesis, i.e., the production of new blood cells, takes place in the bone marrow, which is the major consumer of iron. The reticuloendothelial system helps in recycling iron by erythrocyte phagocytosis. Various proteins are involved in iron metabolism. For instance, hepcidin is a liver-derived peptide hormone that works as a major regulator of iron metabolism. This book explores all the important aspects of the physiology and pathophysiology of iron in the present day scenario. It is a valuable compilation of topics, ranging from the basic to the most complex advancements. Those in search of information to further their knowledge will be greatly assisted by this book.

This reprint focuses on the importance of the micronutrient iron in human physiological iron homeostasis and iron-related diseases. Daily adequate dietary iron supply ensures vital body functions and hemoglobin synthesis during erythropoiesis. During the last few decades, scientific evidence has shown that the maintenance of human iron homeostasis is an important factor for physical and mental health. The present reprint gives an overview of how iron, as an essential dietary element, is responsible for physiological and pathological biochemical processes in the human body. For the readership, this relevant information will provide an evidence-based update on the complex regulatory mechanisms and related diseases of iron metabolism.

This volume is the newest release in the authoritative series issued by the National Academy of Sciences on dietary reference intakes (DRIs). This series provides recommended intakes, such as Recommended Dietary Allowances (RDAs), for use in planning nutritionally adequate diets for individuals based on age and gender. In addition, a new reference intake, the Tolerable Upper Intake Level (UL), has also been established to assist an individual in knowing how much is "too much" of a nutrient. Based on the Institute of Medicine's review of the scientific literature regarding dietary micronutrients, recommendations have been formulated regarding vitamins A and K, iron, iodine, chromium, copper, manganese, molybdenum, zinc, and other potentially beneficial trace elements such as boron to determine the roles, if any, they play in health. The book also: Reviews selected components of food that may influence the bioavailability of these compounds. Develops estimates of dietary intake of these compounds that are compatible with good nutrition throughout the life span and that may decrease risk of chronic disease where data indicate they play a role. Determines Tolerable Upper Intake levels for each nutrient reviewed where adequate scientific data are available in specific population subgroups. Identifies research needed to improve knowledge of the role of these micronutrients in human health. This book will be important to professionals in nutrition research and education.

This book focuses on advances in our understanding of the regulatory mechanisms of brain iron uptake, iron homeostasis and iron metabolism in the pathophysiology and pharmacology of CNS disease models. Dysregulation of brain iron homeostasis can lead to severe pathological changes in the neural system. Iron deficiency can slow down the development of the neural system and cause language and motion disorders, while iron overload is closely related to neurodegenerative diseases. Although some current books include chapters on iron metabolism and certain neurodegenerative diseases, this is the first systematic summary of the latest discoveries regarding brain iron metabolism and CNS diseases. By providing novel and thought-provoking insights into the mechanisms and physiological significance of brain iron metabolism and related diseases, the book stimulates further new research directions. It helps graduate students and researchers gain an overall picture of brain iron metabolism and the pathogenesis of neurodegenerative diseases, and also offers pharmaceutical companies inspiration for new treatment strategies for CNS diseases.

Diet and Health examines the many complex issues concerning diet and its role in increasing or decreasing the risk of chronic disease. It proposes dietary recommendations for reducing the risk of the major diseases and causes of death today: atherosclerotic cardiovascular diseases (including heart attack and stroke), cancer, high blood pressure, obesity, osteoporosis, diabetes mellitus, liver disease, and dental caries.

Within the last few years, iron research has yielded exciting new insights into the under standing of normal iron homeostasis. However, normal iron physiology offers little protec tion from the toxic effects of pathological iron accumulation, because nature did not equip us with effective mechanisms of iron excretion. Excess iron may be effectively removed by phlebotomy in hereditary hemochromatosis, but this method cannot be applied to chronic anemias associated with iron overload. In these diseases, iron chelating therapy is the only method available for preventing early death caused mainly by myocardial and hepatic iron toxicity. Iron chelating therapy has changed the quality of life and life expectancy of thalassemic patients. However, the high cost and rigorous requirements of deferoxamine therapy, and the significant toxicity of deferiprone underline the need for the continued development of new and improved orally effective iron chelators. Such development, and the evolution of improved strategies of iron chelating therapy require better understanding of the pathophysiology of iron toxicity and the mechanism of action of iron chelating drugs. The timeliness of the present volume is underlined by several significant develop ments in recent years. New insights have been gained into the molecular basis of aberrant iron handling in hereditary disorders and the pathophysiology of iron overload (Chapters 1-5).

This book describes the role of trace elements in health and longevity, pursuing a biogerontological approach. It offers essential information on the impact of trace elements on molecular and physiological processes of aging, and on their impact on health in connection with aging. The major topics covered in its 11 chapters, each dedicated to a specific trace element or mineral, are: a) Role of the element in species longevity, b) Recommended intake for longevity in animal species and in the elderly, c) Deficiency and age-related disease, d) Excess/toxicity and age-related disease, and e) Interactions with drugs prescribed in the elderly. Clinical, animal and other laboratory models of interest in aging are included, which enable a more in-depth analysis to be made. The respective chapters are a mixture of overviews and more in-depth reviews in which the mechanisms of aging are described from the point of view of their specific interactions with trace elements and minerals.