Biological Basis of Detoxication

Biological Basis of Detoxication PDF Author: John Caldwell
Publisher: Elsevier
ISBN: 0323150101
Category : Nature
Languages : en
Pages : 444

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Book Description
Biological Basis of Detoxication focuses on the biological processes involved in detoxication, with emphasis on the biochemistry of the removal of xenobiotics from an organism. Topics range from the formation of toxic metabolites and compounds that are not metabolized at all to the tissue distribution and nutritional considerations, the kinetics and mechanisms of the metabolic and excretory processes, and the integration of xenobiotic metabolism in the activation and detoxication of carcinogens. Organized into 14 chapters, this book begins with an overview of the enzymatic basis for the metabolic activation of foreign compounds in forming reactive chemical intermediates. The first few chapters discuss the identification of reactive electrophiles derived from xenobiotics, intratissue distribution of activating and detoxicating enzymes, enzymatic and non-enzymatic modes of xenobiotic metabolism, and unmetabolized compounds. The middle chapters explore the biological basis of detoxication of oxygen free radicals, physiologic and kinetic aspects of the fate of xenobiotics, excretion of xenobiotics, and effects of nutrition on detoxication. The remaining chapters look at the relationships between the enzymes of detoxication and host defense mechanisms, metabolic basis of target organ toxicity, the enzymatic factor in selective toxicity, and intraindividual and interindividual variations in rates of hepatic metabolism of exogenous chemicals. Pharmacologists, toxicologists, and biochemists will find this book highly informative.

Biological Basis of Detoxication

Biological Basis of Detoxication PDF Author: John Caldwell
Publisher: Elsevier
ISBN: 0323150101
Category : Nature
Languages : en
Pages : 444

Get Book

Book Description
Biological Basis of Detoxication focuses on the biological processes involved in detoxication, with emphasis on the biochemistry of the removal of xenobiotics from an organism. Topics range from the formation of toxic metabolites and compounds that are not metabolized at all to the tissue distribution and nutritional considerations, the kinetics and mechanisms of the metabolic and excretory processes, and the integration of xenobiotic metabolism in the activation and detoxication of carcinogens. Organized into 14 chapters, this book begins with an overview of the enzymatic basis for the metabolic activation of foreign compounds in forming reactive chemical intermediates. The first few chapters discuss the identification of reactive electrophiles derived from xenobiotics, intratissue distribution of activating and detoxicating enzymes, enzymatic and non-enzymatic modes of xenobiotic metabolism, and unmetabolized compounds. The middle chapters explore the biological basis of detoxication of oxygen free radicals, physiologic and kinetic aspects of the fate of xenobiotics, excretion of xenobiotics, and effects of nutrition on detoxication. The remaining chapters look at the relationships between the enzymes of detoxication and host defense mechanisms, metabolic basis of target organ toxicity, the enzymatic factor in selective toxicity, and intraindividual and interindividual variations in rates of hepatic metabolism of exogenous chemicals. Pharmacologists, toxicologists, and biochemists will find this book highly informative.

Biological Basis of Detoxication

Biological Basis of Detoxication PDF Author: John Caldwell
Publisher:
ISBN: 9780121550608
Category : Science
Languages : en
Pages : 429

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Book Description
Biological Basis of Detoxication...

Enzymatic Basis of Detoxication

Enzymatic Basis of Detoxication PDF Author: William B. Jakoby
Publisher: Elsevier
ISBN: 0323137989
Category : Medical
Languages : en
Pages : 415

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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.

Metabolic Basis of Detoxication

Metabolic Basis of Detoxication PDF Author: William B. Jakoby
Publisher: Elsevier
ISBN: 0323137997
Category : Science
Languages : en
Pages : 392

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Book Description
Metabolic Basis of Detoxication: Metabolism of Functional Groups considers the possible fates of the relatively circumscribed number of functional groups that xenobiotics bear. An understanding of the possible reactions, and the chemical and biological factors influencing them, will contribute to the overall predictability of the fate of "real" molecules. This approach attempts to knit together the understanding of metabolic pathways with that of the enzymes that catalyze the specific steps. The book contains 18 chapters and begins with a discussion of the biological oxidation of carbon atoms. This is followed by separate chapters on the metabolism of halogenated aliphatic hydrocarbons, aryl halides, heterocyclic rings, alcohols, aldehydes, and ketones. Subsequent chapters cover oxidative processes such as metabolic dealkylations and biological oxidation at nitrogen centers; the reduction of nitro and azo compounds and tertiary amine N-oxides; the oxidation, alkylation, acylation, and glycosylation of mercaptans; epoxide metabolism; and conjugation of phenols. The book aims to inform and interest the pharmacologist and toxicologist concerning the biochemical aspects and to orient the biochemist to the pharmacological insights required in dealing with the metabolism of xenobiotics.

Biochemical Mechanisms of Detoxification in Higher Plants

Biochemical Mechanisms of Detoxification in Higher Plants PDF Author: George Kvesitadze
Publisher: Springer Science & Business Media
ISBN: 3540289976
Category : Science
Languages : en
Pages : 267

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Book Description
Plants play a key role in purifying the biosphere of the toxic effects of industrial activity. This book shows how systematic application of the results of investigations into the metabolism of xenobiotics (foreign, often toxic substances) in plants could make a vastly increased contribution to planetary well-being. Deep physiological knowledge gained from an accumulation of experimental data enables the great differences between the detoxifying abilities of different plants for compounds of different chemical nature to be optimally exploited. Hence planting could be far more systematically adapted to actual environmental needs than is actually the case at present. The book could form the basis of specialist courses in universities and polytechnics devoted to environmental management, and advanced courses in plant physiology and biochemistry, for botany and integrative biology students. Fundamental plant physiology and biochemistry from the molecular level to whole plants and ecosystems are interwoven in a powerful and natural way, making this a unique contribution to the field.

Target Organ Toxicity

Target Organ Toxicity PDF Author: Cohen
Publisher: CRC Press
ISBN: 9780849357756
Category : Medical
Languages : en
Pages : 246

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Book Description
This two-volume set provides essential information on the general princi-ples of target organ toxicity. Pharmacokinetics, metabolic activation and key defense mechanisms, excretion, species variation, and tissue-specific biochemistry are explored comprehensively. These general principles are then illustrated using specific examples of toxicity to different target organs and systems. DNA modifi-cation and repair in tumor induction, and specificity in tumor initiation are also examined. Of primary interest to toxicologist, pharma-cologists, biochemists, and environmental toxicologists.

Annual Plant Reviews, Insect-Plant Interactions

Annual Plant Reviews, Insect-Plant Interactions PDF Author: Claudia Voelckel
Publisher: John Wiley & Sons
ISBN: 1118829808
Category : Science
Languages : en
Pages : 420

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Book Description
This latest volume in Wiley Blackwell’s prestigious AnnualPlant Reviews brings together articles that describe thebiochemical, genetic, and ecological aspects of plant interactionswith insect herbivores.. The biochemistry section of thisoutstanding volume includes reviews highlighting significantfindings in the area of plant signalling cascades, recognition ofherbivore-associated molecular patterns, sequestration of plantdefensive metabolites and perception of plant semiochemicals byinsects. Chapters in the genetics section are focused on geneticmapping of herbivore resistance traits and the analysis oftranscriptional responses in both plants and insects. The ecologysection includes chapters that describe plant-insect interactionsat a higher level, including multitrophic interactions,investigations of the cost-benefit paradigm and the altitudinalniche-breadth hypothesis, and a re-evaluation of co-evolution inthe light of recent molecular research. Written by many of the world’s leading researchers inthese subjects, and edited by Claudia Voelckel and Georg Jander,this volume is designed for students and researchers with somebackground in plant molecular biology or ecology, who would like tolearn more about recent advances or obtain a more in-depthunderstanding of this field. This volume will also be ofgreat use and interest to a wide range of plant scientists andentomologists and is an essential purchase for universities andresearch establishments where biological sciences are studied andtaught. To view details of volumes in Annual Plant Reviews, visit: ahref="http://www.wiley.com/go/apr"www.wiley.com/go/apr/a Also available from Wiley: Plant Defense Dale Walters 9781405175890 Herbicides and Plant Physiology, 2nd Edn Andrew Cobb & John Reade 9781405129350

Molecular Biology of Metal Homeostasis and Detoxification

Molecular Biology of Metal Homeostasis and Detoxification PDF Author: Markus J. Tamás
Publisher: Springer Science & Business Media
ISBN: 3540317198
Category : Science
Languages : en
Pages : 509

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Book Description
One of the challenges faced by every cell as well as by whole organisms is to maintain appropriate concentrations of essential nutrient metals while excluding nonessential toxic metals. Toward that end, all organisms have developed mechanisms for metal homeostasis and detoxification to maintain metal levels within physiological limits. This book brings together current knowledge of the molecular basis of metal homeostasis and detoxification in various eukaryotic model systems, including yeasts, plants, and mammals. It focuses on the cellular systems controlling metal transport, intracellular distribution, and immobilization as well as on systems regulating metal-dependent transcription. In addition to environmental aspects (including phytoremediation), the book treats the pathophysiology of metal deficiency and overload in relation to disease.

Biological Reactive Intermediates V

Biological Reactive Intermediates V PDF Author: Robert R. Snyder
Publisher: Springer Science & Business Media
ISBN: 1475794800
Category : Medical
Languages : en
Pages : 449

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Book Description
Much of organic chemistry is based on the ability of suitably structured chemicals to bind together through the formation of covalent bonds. Biochemistry is replete with exam ples of enzymatically catalyzed reactions in which normal body constituents can be linked through covalent bonds during the process of intermediary metabolism. The finding that xenobiotic chemicals that enter the body from the environment, are metabolized to highly reactive species, and then covalently react with cellular macromolecules to induce toxic and carcinogenic effects was an observation that spawned the research featured in the Fifth International Symposium on Biological Reactive Intermediates (BRI V). The group of investigators that became fascinated with this process and its signifi cance in terms of human health began their discussions in Turku, Finland (J 975), and continued them at Guildford, England (1980), College Park, Maryland (1985), Tucson, Arizona (1990), and Munich, Germany (1995). Among the results were a series of reports listed below, as well as the book for which this serves as the Preface. • Jollow, DJ., Kocsis, J.J., Snyder, R. and Vainio, H. (eds), Biological Reactive Intermediates: Formation, Toxicity and Inactivation, Plenum Press, NY, 1975. • Snyder, R., Park, D.V., Kocsis, J.J., Jollow, D.V., Gibson, G.G. and Witmer, C.M. (eds), Biological Reactive Intermediates II: Chemical Mechanisms and Biological Effects, Plenum Press, N.Y., 1982.

Early Phase Drug Evaluation in Man

Early Phase Drug Evaluation in Man PDF Author: O'grady
Publisher: CRC Press
ISBN: 1000717771
Category : Medical
Languages : en
Pages : 748

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Book Description
Early Phase Drug Evaluation in Man is a comprehensive, practical guide that covers pre-clinical information relevant to early human studies, including pharmaceutical, metabolic, toxicological, and regulatory aspects, as well as the general considerations relevant to all early human studies. Each major therapeutic area is considered by class of activity of drug. The chapters describe what measurements of drug activity are available in healthy human subjects and in patients, how to make the measurements, their value and their limitations. The contributors have been drawn internationally from the pharmaceutical industry and academia. Early Phase Drug Evaluation in Man will provide an important reference guide for industry and academic professionals involved in the development of new drugs.