Author: William B. Jakoby
Publisher: Elsevier
ISBN: 0323137989
Category : Science
Languages : en
Pages : 432
Book Description
Enzymatic Basis of Detoxication, Volume I focuses on the catalytic mechanisms and physiological expression of the enzymes that are involved in the detoxication of foreign compounds. The book explores foreign compound metabolism at the level of what specific enzymes can do. This book is organized into three sections and comprised of 17 chapters. The discussion begins with an overview of detoxication and covers both catalytic and non-catalytic removal of foreign substances, along with the general properties of the enzymes that are active in detoxication. The reader is then introduced to the physiological aspects of detoxication, paying particular attention to the kinetic aspects of metabolism and elimination of foreign compounds in animals, human genetic variation in detoxication enzymes, and how such enzymes are induced. The next section focuses on mixed function oxygenase systems and includes chapters on cytochrome P-450 and the detoxication reactions it catalyzes. The book also considers other oxidation-reduction systems, with reference to alcohol dehydrogenase, aldehyde reductase, aldehyde oxidizing enzymes, ketone reductases, xanthine oxidase and aldehyde oxidase, glutathione peroxidase, and superoxide dismutases. The final chapter is devoted to monoamine oxidase, its properties, substrate specificity, inhibitors, kinetics and mechanism, and multiple forms. Pharmacologists, toxicologists, and biochemists will find this book extremely helpful.
Enzymatic Basis of Detoxication Volume 1
Author: William B. Jakoby
Publisher: Elsevier
ISBN: 0323137989
Category : Science
Languages : en
Pages : 432
Book Description
Enzymatic Basis of Detoxication, Volume I focuses on the catalytic mechanisms and physiological expression of the enzymes that are involved in the detoxication of foreign compounds. The book explores foreign compound metabolism at the level of what specific enzymes can do. This book is organized into three sections and comprised of 17 chapters. The discussion begins with an overview of detoxication and covers both catalytic and non-catalytic removal of foreign substances, along with the general properties of the enzymes that are active in detoxication. The reader is then introduced to the physiological aspects of detoxication, paying particular attention to the kinetic aspects of metabolism and elimination of foreign compounds in animals, human genetic variation in detoxication enzymes, and how such enzymes are induced. The next section focuses on mixed function oxygenase systems and includes chapters on cytochrome P-450 and the detoxication reactions it catalyzes. The book also considers other oxidation-reduction systems, with reference to alcohol dehydrogenase, aldehyde reductase, aldehyde oxidizing enzymes, ketone reductases, xanthine oxidase and aldehyde oxidase, glutathione peroxidase, and superoxide dismutases. The final chapter is devoted to monoamine oxidase, its properties, substrate specificity, inhibitors, kinetics and mechanism, and multiple forms. Pharmacologists, toxicologists, and biochemists will find this book extremely helpful.
Publisher: Elsevier
ISBN: 0323137989
Category : Science
Languages : en
Pages : 432
Book Description
Enzymatic Basis of Detoxication, Volume I focuses on the catalytic mechanisms and physiological expression of the enzymes that are involved in the detoxication of foreign compounds. The book explores foreign compound metabolism at the level of what specific enzymes can do. This book is organized into three sections and comprised of 17 chapters. The discussion begins with an overview of detoxication and covers both catalytic and non-catalytic removal of foreign substances, along with the general properties of the enzymes that are active in detoxication. The reader is then introduced to the physiological aspects of detoxication, paying particular attention to the kinetic aspects of metabolism and elimination of foreign compounds in animals, human genetic variation in detoxication enzymes, and how such enzymes are induced. The next section focuses on mixed function oxygenase systems and includes chapters on cytochrome P-450 and the detoxication reactions it catalyzes. The book also considers other oxidation-reduction systems, with reference to alcohol dehydrogenase, aldehyde reductase, aldehyde oxidizing enzymes, ketone reductases, xanthine oxidase and aldehyde oxidase, glutathione peroxidase, and superoxide dismutases. The final chapter is devoted to monoamine oxidase, its properties, substrate specificity, inhibitors, kinetics and mechanism, and multiple forms. Pharmacologists, toxicologists, and biochemists will find this book extremely helpful.
Activation and Detoxification Enzymes
Author: Chang-Hwei Chen
Publisher: Springer Science & Business Media
ISBN: 1461410495
Category : Medical
Languages : en
Pages : 185
Book Description
Humans are exposed to foreign compounds such as drugs, household products and environmental chemicals by swallowing or breathing. Also, food is considered a foreign compound. Such foreign compounds can be non-essential and non-functional to life, and commonly are referred to as xenobiotics. Some xenobiotics are not toxic; however, many of them are potentially toxic or become toxic after conversion to metabolic intermediates. A considerable number of foreign compounds belong to non-polar, lipophilic substances. Lipophilic compounds are not soluble in water. Metabolic conversion of lipophilic foreign compounds to facilitate their removal from the body is essentially carried out by biochemical reactions catalyzed by two classes of metabolizing enzymes, namely, activation enzymes and detoxification enzymes. Activation enzyme-catalyzed functionalization reaction introduces a functional group to a lipophilic compound. Functionalization modifies many foreign compounds to form reactive intermediates capable of interacting with cellular components (proteins, DNA and lipids), leading to a variety of conditions for diseases. Functionalized compounds are further metabolized through detoxification enzyme-catalyzed reactions, which result in an increase in the solubility of parent compounds and an inactivation of metabolic intermediates, thus facilitating their excretion from the body. To minimize the exposure of potentially toxic metabolic intermediates, it is essential to keep them at a minimum level. Extensive investigations have revealed that foreign compound-metabolizing enzymes exhibit genetic polymorphisms. Variations in their activities can produce different results as to the susceptibility to potential toxic effects. Moreover, the expressions of activation enzymes and detoxification enzymes are inducible. A number of chemical compounds are capable of acting as modulators for these two classes of enzymes. These findings have lead to the proposal of modulating metabolizing enzymes as a useful approach for human health benefits. Importantly, many of these chemical compounds are present in human daily diets. There are many advances that have been made in the past decades towards the understanding of functions and implications of activation enzymes and detoxification enzymes. An organized, concise overview is needed for the readers who are initially exposed to this important subject, particularly for students and researchers in the areas of biomedical sciences, biochemistry, nutrition, pharmacology and chemistry. This book is intended to serve this purpose as an introduction to the subject. Furthermore, major topics in the book, excluding catalytic reactions and structural properties, may have interest to other readers who have knowledge of basic sciences and understanding enzyme related information. The book discusses subjects associated with foreign compound metabolizing enzymes with emphasis on biochemical aspects, including lipophilic foreign compounds, catalytic properties, reactive intermediates, biomedical and biochemical effects, genetic polymorphisms, enzyme inducibility, enzyme modulation for health benefits, dietary related enzyme modulators, and structural characteristics of enzyme inducers.
Publisher: Springer Science & Business Media
ISBN: 1461410495
Category : Medical
Languages : en
Pages : 185
Book Description
Humans are exposed to foreign compounds such as drugs, household products and environmental chemicals by swallowing or breathing. Also, food is considered a foreign compound. Such foreign compounds can be non-essential and non-functional to life, and commonly are referred to as xenobiotics. Some xenobiotics are not toxic; however, many of them are potentially toxic or become toxic after conversion to metabolic intermediates. A considerable number of foreign compounds belong to non-polar, lipophilic substances. Lipophilic compounds are not soluble in water. Metabolic conversion of lipophilic foreign compounds to facilitate their removal from the body is essentially carried out by biochemical reactions catalyzed by two classes of metabolizing enzymes, namely, activation enzymes and detoxification enzymes. Activation enzyme-catalyzed functionalization reaction introduces a functional group to a lipophilic compound. Functionalization modifies many foreign compounds to form reactive intermediates capable of interacting with cellular components (proteins, DNA and lipids), leading to a variety of conditions for diseases. Functionalized compounds are further metabolized through detoxification enzyme-catalyzed reactions, which result in an increase in the solubility of parent compounds and an inactivation of metabolic intermediates, thus facilitating their excretion from the body. To minimize the exposure of potentially toxic metabolic intermediates, it is essential to keep them at a minimum level. Extensive investigations have revealed that foreign compound-metabolizing enzymes exhibit genetic polymorphisms. Variations in their activities can produce different results as to the susceptibility to potential toxic effects. Moreover, the expressions of activation enzymes and detoxification enzymes are inducible. A number of chemical compounds are capable of acting as modulators for these two classes of enzymes. These findings have lead to the proposal of modulating metabolizing enzymes as a useful approach for human health benefits. Importantly, many of these chemical compounds are present in human daily diets. There are many advances that have been made in the past decades towards the understanding of functions and implications of activation enzymes and detoxification enzymes. An organized, concise overview is needed for the readers who are initially exposed to this important subject, particularly for students and researchers in the areas of biomedical sciences, biochemistry, nutrition, pharmacology and chemistry. This book is intended to serve this purpose as an introduction to the subject. Furthermore, major topics in the book, excluding catalytic reactions and structural properties, may have interest to other readers who have knowledge of basic sciences and understanding enzyme related information. The book discusses subjects associated with foreign compound metabolizing enzymes with emphasis on biochemical aspects, including lipophilic foreign compounds, catalytic properties, reactive intermediates, biomedical and biochemical effects, genetic polymorphisms, enzyme inducibility, enzyme modulation for health benefits, dietary related enzyme modulators, and structural characteristics of enzyme inducers.
Chemical Sensitivity
Author: William J. Rea
Publisher: CRC Press
ISBN: 9780873715416
Category : Science
Languages : en
Pages : 556
Book Description
Chemical Sensitivity is the first major scientific book series on chemical sensitivity, an increasingly important worldwide health problem. This four-volume series features results from the study of more than 20,000 environmentally sensitive patients at the Environmental Health Center (EHC) in Dallas. Results from the study at EHC are supplemented by information accumulated from the treatment and study of an estimated 100,000 patients by other environmentally oriented physicians and scientists around the world.
Publisher: CRC Press
ISBN: 9780873715416
Category : Science
Languages : en
Pages : 556
Book Description
Chemical Sensitivity is the first major scientific book series on chemical sensitivity, an increasingly important worldwide health problem. This four-volume series features results from the study of more than 20,000 environmentally sensitive patients at the Environmental Health Center (EHC) in Dallas. Results from the study at EHC are supplemented by information accumulated from the treatment and study of an estimated 100,000 patients by other environmentally oriented physicians and scientists around the world.
The Alkaloids: Chemistry and Pharmacology
Author:
Publisher: Academic Press
ISBN: 0080865518
Category : Science
Languages : en
Pages : 449
Book Description
The Alkaloids: Chemistry and Pharmacology
Publisher: Academic Press
ISBN: 0080865518
Category : Science
Languages : en
Pages : 449
Book Description
The Alkaloids: Chemistry and Pharmacology
Encyclopedia of Entomology
Author: John L. Capinera
Publisher: Springer Science & Business Media
ISBN:
Category : Science
Languages : en
Pages : 1062
Book Description
Bringing together the expertise of over 450 distinguished entomologists from 40 countries, this exhaustive work provides a global overview of insects and their close relatives. It is designed as an introduction to this fascinating group of animals.
Publisher: Springer Science & Business Media
ISBN:
Category : Science
Languages : en
Pages : 1062
Book Description
Bringing together the expertise of over 450 distinguished entomologists from 40 countries, this exhaustive work provides a global overview of insects and their close relatives. It is designed as an introduction to this fascinating group of animals.
Hayes' Principles and Methods of Toxicology
Author: A. Wallace Hayes
Publisher: CRC Press
ISBN: 1842145371
Category : Medical
Languages : en
Pages : 2141
Book Description
Hayes' Principles and Methods of Toxicology has long been established as a reliable reference to the concepts, methodologies, and assessments integral to toxicology. The new sixth edition has been revised and updated while maintaining the same high standards that have made this volume a benchmark resource in the field. With new authors and new chap
Publisher: CRC Press
ISBN: 1842145371
Category : Medical
Languages : en
Pages : 2141
Book Description
Hayes' Principles and Methods of Toxicology has long been established as a reliable reference to the concepts, methodologies, and assessments integral to toxicology. The new sixth edition has been revised and updated while maintaining the same high standards that have made this volume a benchmark resource in the field. With new authors and new chap
Principles and Methods of Toxicology, Fifth Edition
Author: A. Wallace Hayes
Publisher: CRC Press
ISBN: 9780849337789
Category : Medical
Languages : en
Pages : 2304
Book Description
Founded on the paradox that all things are poisons and the difference between poison and remedy is quantity, the determination of safe dosage forms the base and focus of modern toxicology. In order to make a sound determination there must be a working knowledge of the biologic mechanisms involved and of the methods employed to define these mechanisms. While the vastness of the field and the rapid accumulation of data may preclude the possibility of absorbing and retaining more than a fraction of the available information, a solid understanding of the underlying principles is essential. Extensively revised and updated with four new chapters and an expanded glossary, this fifth edition of the classic text, Principles and Methods of Toxicology provides comprehensive coverage in a manageable and accessible format. New topics include 'toxicopanomics', plant and animal poisons, information resources, and non-animal testing alternatives. Emphasizing the cornerstones of toxicology-people differ, dose matters, and things change, the book begins with a review of the history of toxicology and followed by an explanation of basic toxicological principles, agents that cause toxicity, target organ toxicity, and toxicological testing methods including many of the test protocols required to meet regulatory needs worldwide. The book examines each method or procedure from the standpoint of technique and interpretation of data and discusses problems and pitfalls that may be associated with each. The addition of several new authors allow for a broader and more diverse treatment of the ever-changing and expanding field of toxicology. Maintaining the high-quality information and organizational framework that made the previous editions so successful, Principles and Methods of Toxicology, Fifth Edition continues to be a valuable resource for the advanced practitioner as well as the new disciple of toxicology.
Publisher: CRC Press
ISBN: 9780849337789
Category : Medical
Languages : en
Pages : 2304
Book Description
Founded on the paradox that all things are poisons and the difference between poison and remedy is quantity, the determination of safe dosage forms the base and focus of modern toxicology. In order to make a sound determination there must be a working knowledge of the biologic mechanisms involved and of the methods employed to define these mechanisms. While the vastness of the field and the rapid accumulation of data may preclude the possibility of absorbing and retaining more than a fraction of the available information, a solid understanding of the underlying principles is essential. Extensively revised and updated with four new chapters and an expanded glossary, this fifth edition of the classic text, Principles and Methods of Toxicology provides comprehensive coverage in a manageable and accessible format. New topics include 'toxicopanomics', plant and animal poisons, information resources, and non-animal testing alternatives. Emphasizing the cornerstones of toxicology-people differ, dose matters, and things change, the book begins with a review of the history of toxicology and followed by an explanation of basic toxicological principles, agents that cause toxicity, target organ toxicity, and toxicological testing methods including many of the test protocols required to meet regulatory needs worldwide. The book examines each method or procedure from the standpoint of technique and interpretation of data and discusses problems and pitfalls that may be associated with each. The addition of several new authors allow for a broader and more diverse treatment of the ever-changing and expanding field of toxicology. Maintaining the high-quality information and organizational framework that made the previous editions so successful, Principles and Methods of Toxicology, Fifth Edition continues to be a valuable resource for the advanced practitioner as well as the new disciple of toxicology.
Industrial Enzyme Applications
Author: Andreas Vogel
Publisher: John Wiley & Sons
ISBN: 3527343857
Category : Science
Languages : en
Pages : 430
Book Description
This reference is a "must-read": It explains how an effective and economically viable enzymatic process in industry is developed and presents numerous successful examples which underline the efficiency of biocatalysis.
Publisher: John Wiley & Sons
ISBN: 3527343857
Category : Science
Languages : en
Pages : 430
Book Description
This reference is a "must-read": It explains how an effective and economically viable enzymatic process in industry is developed and presents numerous successful examples which underline the efficiency of biocatalysis.
Patty's Toxicology, 6 Volume Set
Author: Eula Bingham
Publisher: John Wiley & Sons
ISBN: 0470410817
Category : Science
Languages : en
Pages : 5872
Book Description
Featuring the improved format used in the 5th edition, this updated set presents, in logical groupings, comprehensive toxicological data for industrial compounds, including CAS numbers, physical and chemical properties, exposure limits, and biological tolerance values for occupational exposures, making it essential for toxicologists and industrial hygienists. This edition has about 40% new authors who have brought a new and international perspective to interpreting industrial toxicology, and discusses new subjects such as nanotechnology, flavorings and the food industry, reactive chemical control to comprehensive chemical policy, metalworking fluids, and pharmaceuticals.
Publisher: John Wiley & Sons
ISBN: 0470410817
Category : Science
Languages : en
Pages : 5872
Book Description
Featuring the improved format used in the 5th edition, this updated set presents, in logical groupings, comprehensive toxicological data for industrial compounds, including CAS numbers, physical and chemical properties, exposure limits, and biological tolerance values for occupational exposures, making it essential for toxicologists and industrial hygienists. This edition has about 40% new authors who have brought a new and international perspective to interpreting industrial toxicology, and discusses new subjects such as nanotechnology, flavorings and the food industry, reactive chemical control to comprehensive chemical policy, metalworking fluids, and pharmaceuticals.
An Introduction to Aquatic Toxicology
Author: Mikko Nikinmaa
Publisher: Elsevier
ISBN: 0124115810
Category : Science
Languages : en
Pages : 253
Book Description
An Introduction to Aquatic Toxicology is an introductory reference for all aspects of toxicology pertaining to aquatic environments. As water sources diminish, the need to understand the effects that contaminants may have on aquatic organisms and ecosystems increases in importance. This book will provide you with a solid understanding of aquatic toxicology, its past, its cutting-edge present and its likely future. An Introduction to Aquatic Toxicology will introduce you to the global issue of aquatic contamination, detailing the major sources of contamination, from where they originate, and their effects on aquatic organisms and their environment. State-of-the-art toxicological topics covered include nanotoxicology, toxicogenomics, bioinformatics, transcriptomics, metabolomics, as well as water management and the toxicological effects of major environmental issues such as algal blooms, climate change and ocean acidification. This book is intended for anyone who wants to know more about the impact of toxicants on aquatic organisms and ecosystems, or to keep up to date with recent and future developments in the field. - Provides with the latest perspectives on the impacts of toxicants on aquatic environments, such as nanotoxicology, toxicogenomics, ocean acidification and eutrophication - Offers a complete overview, beginning with the origins of aquatic toxicology and concluding with potential future challenges - Includes guidance on testing methods and a glossary of aquatic toxicology terms
Publisher: Elsevier
ISBN: 0124115810
Category : Science
Languages : en
Pages : 253
Book Description
An Introduction to Aquatic Toxicology is an introductory reference for all aspects of toxicology pertaining to aquatic environments. As water sources diminish, the need to understand the effects that contaminants may have on aquatic organisms and ecosystems increases in importance. This book will provide you with a solid understanding of aquatic toxicology, its past, its cutting-edge present and its likely future. An Introduction to Aquatic Toxicology will introduce you to the global issue of aquatic contamination, detailing the major sources of contamination, from where they originate, and their effects on aquatic organisms and their environment. State-of-the-art toxicological topics covered include nanotoxicology, toxicogenomics, bioinformatics, transcriptomics, metabolomics, as well as water management and the toxicological effects of major environmental issues such as algal blooms, climate change and ocean acidification. This book is intended for anyone who wants to know more about the impact of toxicants on aquatic organisms and ecosystems, or to keep up to date with recent and future developments in the field. - Provides with the latest perspectives on the impacts of toxicants on aquatic environments, such as nanotoxicology, toxicogenomics, ocean acidification and eutrophication - Offers a complete overview, beginning with the origins of aquatic toxicology and concluding with potential future challenges - Includes guidance on testing methods and a glossary of aquatic toxicology terms