Author: Chaim Hershko Publisher: Springer Science & Business Media ISBN: 1461505933 Category : Science Languages : en Pages : 275
Book Description
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).
Author: Peggy L. Carver Publisher: Walter de Gruyter GmbH & Co KG ISBN: 3110526980 Category : Science Languages : en Pages : 640
Book Description
Volume 19, entitled Essential Metals in Medicine: Therapeutic Use and Toxicity of Metal Ions in the Clinic of the series Metal Ions in Life Sciences centers on the role of metal ions in clinical medicine. Metal ions are tightly regulated in human health: while essential to life, they can be toxic as well. Following an introductory chapter briefly discussing several important metal-related drugs and diseases and a chapter about drug development, the focus is fi rst on iron: its essentiality for pathogens and humans as well as its toxicity. Chelation therapy is addressed in the context of thalassemia, its relationship to neurodegenerative diseases and also the risks connected with iron administration are pointed out. A subject of intense debate is the essentiality of chromium and vanadium. For example, chromium(III) compounds are taken as a nutritional supplement by athletes and bodybuilders; in contrast, chromate, Cr(VI), is toxic and a carcinogen for humans. The benefi cial and toxic effects of manganese, cobalt, and copper on humans are discussed. The need for antiparasitic agents is emphasized as well as the clinical aspects of metal-containing antidotes for cyanide poisoning. In addition to the essential and possibly essential ones, also other metal ions play important roles in human health, causing harm (like the metalloid arsenic, lead or cadmium) or being used in diagnosis or treatment of human diseases, like gadolinium, gallium, lithium, gold, silver or platinum. The impact of this vibrant research area on metals in the clinic is provided in 14 stimulating chapters, written by internationally recognized experts from the Americas, Europe and China, and is manifested by approximately 2000 references, and about 90 illustrations and tables. Essential Metals in Medicine: Therapeutic Use and Toxicity of Metal Ions in the Clinic is an essential resource for scientists working in the wide range from pharmacology, enzymology, material sciences, analytical, organic, and inorganic biochemistry all the way through to medicine ... not forgetting that it also provides excellent information for teaching.
Author: Jan Aaseth Publisher: Academic Press ISBN: 0128030739 Category : Medical Languages : en Pages : 388
Book Description
Chelation Therapy in the Treatment of Metal Intoxication presents a practical guide to the use of chelation therapy, from its basic chemistry, to available chelating antidotes, and the application of chelating agents. Several metals have long been known to be toxic to humans, and continue to pose great difficulty to treat. These challenges pose particular problems in industrial settings, with lead smelting known to be associated with hemopoietic alterations and paralyses, and the inhalation of mercury vapor in mercury mining being extremely detrimental to the central nervous system. Clinical experience has demonstrated that acute and chronic human intoxications with a range of metals can be treated efficiently by administration of chelating agents. Chelation Therapy in the Treatment of Metal Intoxication describes the chemical and biological principles of chelation in the treatment of these toxic metal compounds, including new chelators such as meso-2,3-dimercaptosuccinic acid (DMSA) and D,L-2,3-dimercapto-1-propanesulfonic acid (DMPS). Presents all the current findings on the potential for chelation as a therapy for metal intoxication Presents practical guidelines for selecting the most appropriate chelating agent Includes coverage on radionuclide exposure and metal storage diseases Describes the chemical and biological principles of chelation in the treatment of toxic metal compounds
Author: Hyman J. Zimmerman Publisher: Lippincott Williams & Wilkins ISBN: 9780781719520 Category : Medical Languages : en Pages : 848
Book Description
Written by the foremost authority in the field, this volume is a comprehensive review of the multifaceted phenomenon of hepatotoxicity. Dr. Zimmerman examines the interface between chemicals and the liver; the latest research in experimental hepatotoxicology; the hepatotoxic risks of household, industrial, and environmental chemicals; and the adverse effects of drugs on the liver. This thoroughly revised, updated Second Edition features a greatly expanded section on the wide variety of drugs that can cause liver injury. For quick reference, an appendix lists these medications and their associated hepatic injuries. Also included are in-depth discussions of drug metabolism and factors affecting susceptibility to liver injury.
Author: Robert R Crichton Publisher: Royal Society of Chemistry ISBN: 1782623892 Category : Science Languages : en Pages : 322
Book Description
Metal chelators are emerging as versatile tool with many medical applications. Their versatility allows them to be used in chelation therapy for treating diseases caused by toxic and heavy metal poisoning, chelating agents are capable of binding to toxic metal ions to form complex structures which are easily excreted from the body removing them from intracellular or extracellular spaces. In addition, metal chelators can also be applied as contrast agents in MRI scanning. Metal Chelation in Medicine provides a clear and timely perspective on the role of chelating agents in the management of metal intoxications and storage diseases. Written by leaders in the field of chelators, this publication is at the cutting-edge of the subject. It covers a broad range of topics such as the use of metal chelators in non-invasive assessment of brain iron overload, and the treatment of systemic iron overload and neurodegenerative diseases. As such it is particularly valuable to clinicians treating metal poisonings and metal storage diseases. However, it is also a useful text for researchers, industry professionals and university students with a specific interest in medicinal chemistry, chelation, metal ions, imaging and non-invasive techniques.
Author: Warren J. Manning Publisher: Elsevier Health Sciences ISBN: 0323497373 Category : Medical Languages : en Pages : 672
Book Description
Provides state-of-the-art coverage of CMR technologies and guidelines, including basic principles, imaging techniques, ischemic heart disease, right ventricular and congenital heart disease, vascular and pericardium conditions, and functional cardiovascular disease. Includes new chapters on non-cardiac pathology, pacemaker safety, economics of CMR, and guidelines as well as new coverage of myocarditis and its diagnosis and assessment of prognosis by cardiovascular magnetic resonance, and the use of PET/CMR imaging of the heart, especially in sarcoidosis. Features more than 1,100 high-quality images representing today’s CMR imaging. Covers T1, T2 and ECV mapping, as well as T2* imaging in iron overload, which has been shown to save lives in patients with thalassaemia major Discusses the cost-effectiveness of CMR.
Author: Gary Greenberg Publisher: Humanix Books ISBN: 1630061204 Category : Health & Fitness Languages : en Pages : 175
Book Description
The Medical Breakthrough of Chelation Therapy: A treatment that uses medicine to remove toxic metals from the body so they don't make you sick. Chelation has long been approved by the FDA to rid the body of lead by using a synthetic amino acid (ethylene diamine tetraacetic acid), which binds to toxic metals and minerals in the bloodstream, allowing a patient to excrete them. When metals like lead, mercury, iron, and arsenic build up in your body, they can be toxic. Alternative medical practitioners have used chelation for nearly 60 years, especially to treat heavy metal contamination that causes or contributes to heart disease. Chelation rids the body of deposits that can lead to atherosclerosis, which causes coronary arteries to narrow, leading to heart attacks. Patients have also found relief through chelation for improving the symptoms of autism. One of the most promising areas of research is in the treatment of Alzheimer’s disease. Because the buildup of metals like copper, iron, and zinc are thought to play a role in Alzheimer's disease, Chelation Therapy might have a place in treating it. Full of hope-inspiring case histories, expert findings and where to find treatment, The Chelation Revolution: Breakthrough Detox Therapy shows how Chelation Therapy can alleviate suffering in numerous medical conditions and lead to a healthier, happier, and longer life. Includes a Foreword by Tammy Born Huizenga, D.O., owner of the internationally recognized Born Clinic in Grand Rapids, MI, an internationally respected organization in preventive medicine with a speciality in Chelation Therapy.
Author: Beth H. Shaz Publisher: Newnes ISBN: 0123977886 Category : Science Languages : en Pages : 1014
Book Description
The second edition of Transfusion Medicine and Hemostasis continues to be the only "pocket-size" quick reference for pathology residents and transfusion medicine fellows. It covers all topics in blood banking, transfusion medicine, and clinical and laboratory based coagulation. Short, focused chapters, organized by multiple hierarchical headings, are supplemented with up to 10 suggested reading citations. This single reference covers essentially all the topics required to meet the goals and objectives of a major program in transfusion medicine and clinical coagulation. New chapters in the coagulation testing section reflect the development of new tests available and their incorporation into clinical practice. Coverage includes essential updates on the importance of new cellular therapies, peripheral blood and bone marrow hematopoietic progenitor cells, as well as cord blood banking and regenerative medicine. The authors also examine advances in the understanding of molecular testing and pathogen reduction in two separate quality control chapters (one for blood centers and one for hospitals). Updated content covers new coagulation tests, cellular therapies, and quality control issues Easy to use, with focused, well-defined chapters in a standardized format throughout Offers quick "cross-reference" lists at the end of each chapter Includes lists of common abbreviations and indexes that cross reference diagnostic, clinical and therapeutic commonalities
Author: Farid Badria Publisher: GRIN Verlag ISBN: 3346117340 Category : Science Languages : en Pages : 117
Book Description
Master's Thesis from the year 2019 in the subject Chemistry - General, grade: 4.0, Mansoura University, language: English, abstract: Iron-overload disorder (hemochromatosis) is one of the major reasons of morbidity, caused by genetic disorder of protein involved in regulation of iron absorption or due to multiple transfusion of iron in chronic anemia for example thalassemia. Resulting in initiation and propagation reactive oxygen species which attacking macromolecules of cells such as proteins, lipids, RNA and DNA and ultimately cells death. Leading to a state of oxidative stress associated with many of health problems such as heart failure, liver cirrhosis, fibrosis, gallbladder disorders, diabetes, arthritis, infertility, and cancer. The available chelators drugs can forming soluble, stable complexes with excessive iron andexcreted it in the feces and/or urine. But due to, their high cost, severe side effects, poor oralbioavailability or short plasma half-life make them suboptimal. Sixteen plant leaves were collected, authenticated and subjected to exhausted extraction by 70% methanol. The obtained leaves extracts were screened for their iron chelation activity using 2,2`- bipyridyl assay. Among the screened extracts, the Mangiferaindica leaves showed the highest iron chelation activity(69.71 ± 0.27%)comparable to positive control, EDTA(70.30 ± 0.08%). The total extract of theM. indica leaves was partitioned with different solvents (petroleum ether, methylene chloride, ethyl acetate and n-butanol). The resultingfractions were screened for their iron chelation activity using 2, 2`- bipyridyl assay.EtOAcfractionhad the significant chelating activity (123 ± 2.75%),more potent than EDTA(64.12 ± 1.48%) and total extract of M. indica leaves (69.71 ± 0.27%). The mangiferin compound was subjected to comparison with desferal® to assurance the quality of its chelating activity throughdetermine the active sites responsible of its chelating property and evaluation the effect of its iron-stable complex on its antioxidant activity. According to introduced results, through different biological analysis. We found that, the iron-overloaded rats treated with ethyl acetate fraction had significant decreases in iron accumulation within liver and spleen (the major organs affected by iron overload). We assume that, the mangiferin may protect from reactive oxygenspecies-stimulatedseveral of disordersby its iron chelatingactivity which promotes its antioxidant property.
Author: Chaim Hershko
Author: Peggy L. Carver
Author: Jan Aaseth
Author: Hyman J. Zimmerman
Author: Robert R Crichton
Author: Maria-Domenica Cappellini
Author: Warren J. Manning
Author: Gary Greenberg
Author: Beth H. Shaz
Author: Farid Badria