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Books > Medicine > Other branches of medicine > Pharmacology > Medical toxicology

Clarke's Analytical Forensic Toxicology (Paperback, 2nd Revised edition): Adam Negrusz, Gail Cooper Clarke's Analytical Forensic Toxicology (Paperback, 2nd Revised edition)
Adam Negrusz, Gail Cooper
R1,865 Discovery Miles 18 650 Ships in 10 - 15 working days

This second edition of Clarke's Analytical Forensic Toxicology offers a fresh perspective on the drugs and poisons that you are most likely to encounter in forensic toxicology, with a focus on collection, extraction and analysis. With additional features incorporated from the fourth edition of Clarke's Analysis of Drugs and Poisons this text is fully updated to reflect the advances in analytical and forensic toxicology. New and extended chapters include: sampling, storage and stability; in-utero exposure to drugs of abuse; drug-facilitated sexual assault; and extraction. Providing unrivalled comprehensive coverage of analytical forensic toxicology, this book is a crucial resource for students of forensic science, toxicology, clinical pharmacology and analytical chemistry. It is an invaluable tool for teachers in these subject areas and a key resource for those working in forensic science laboratories.

Reproductive and Developmental Toxicology (Hardcover, 3rd edition): Ramesh C. Gupta Reproductive and Developmental Toxicology (Hardcover, 3rd edition)
Ramesh C. Gupta
R5,610 Discovery Miles 56 100 Ships in 10 - 15 working days

Reproductive and Developmental Toxicology, Third Edition is a comprehensive and authoritative resource, providing the latest literature on this complex subject by focusing on three core components - parent, placenta and fetus - and the continuous changes that occur in each. Enriched with relevant references describing every aspect of reproductive toxicology, this revised and updated resource addresses the totality of the subject, discussing a broad range of topics including nanoparticles and radiation, gases and solvents, smoking, alcohol and drugs of abuse, and metals, among others. In addition, it is the only resource to include reproductive and developmental toxicity in domestic animals, fish and wildlife With a special focus on placental toxicity, this book is the only available reference to connect the three key risk stages. Completely revised and updated to include the most recent developments in the field, this book is an essential resource for advanced students and researchers in toxicology, as well as biologists, pharmacologists and teratologists from academia, industry and regulatory agencies.

Synthetic Pesticide Use in Africa - Impact on People, Animals, and the Environment (Hardcover): Charles L. Wilson, Don M. Huber Synthetic Pesticide Use in Africa - Impact on People, Animals, and the Environment (Hardcover)
Charles L. Wilson, Don M. Huber
R5,490 Discovery Miles 54 900 Ships in 10 - 15 working days

A UN report presented to the UN Human Rights Council in 2017 recognized that, "although pesticide use has been correlated with a rise in food production, it has had catastrophic impacts" on human health and the environment. The report acknowledged that "increased food production has not succeeded in eliminating hunger worldwide because of the many interacting factors involved. Reliance on hazardous pesticides is a short-term solution that undermines the rights to adequate food and health for present and future generations." It is hoped that the knowledge available in Synthetic Pesticide Use in Africa: Impact on People, Animals, and the Environment will both enlighten the reader to present serious concerns on the use of synthetic pesticides, and motivate society to make the changes necessary for the sustainable production of safe, nutritious, and affordable food for the anticipated 250 billion inhabitants of this Earth in 2050. Key Features: * Explains the relationship of synthetic pesticides to escalating noncommunicable human and animal diseases in Africa and developing countries. * Discusses the impact of the herbicide glyphosate on the health of humans, animals, and the environment. * Reviews the disease causing mode of action of glyphosate and other synthetic pesticides on nutrient density and human and animal bodies. * Warns of the special vulnerability of children to synthetic pesticide toxicity. * Recommends needed legal initiatives to use synthetic pesticides more judiciously. The book is divided into seven (7) sections: I. General Impact, explains the general impact of synthetic pesticides on the African people, their animals, and environment. II. Human Health, covers the impact of synthetic pesticides on the human body, while III, Children's Health, focuses on the special vulnerability of children to synthetic pesticides. IV. Animal Health describes the synthetic pesticide threats to animal production and sustainability. V. Environmental Health presents the threat of synthetic pesticides to soil microbiota and sustainable remediations. VI. Control Strategies discusses biologically-based alternatives to synthetic pesticides. Finally, VII. Reglatory Control presents some legal initiatives to combat the misuse of synthetic pesticides.

Metal Toxicology Handbook (Hardcover): Debasis Bagchi, Manashi Bagchi Metal Toxicology Handbook (Hardcover)
Debasis Bagchi, Manashi Bagchi
R6,649 Discovery Miles 66 490 Ships in 10 - 15 working days

Heavy metals and metalloids, singly or in combination, induce toxic manifestations either through acute or chronic pathology. In particular, long-term chronic exposure to diverse heavy metals and metalloids to humans and animals can lead to numerous physical, muscular, neurological, nephrological, and diverse degenerative diseases and dysfunctions, including multiple sclerosis, muscular dystrophy, Parkinson's and Alzheimer's diseases, cardiovascular disorders, and several others. Recognized heavy metals such as lead, mercury, arsenic, cadmium, thallium, and hexavalent chromium are known for enormous toxicity. The immediate vital signs of acute heavy metal exposure include nausea, vomiting, diarrhea, and acute abdominal pain. Mercury has been identified as the most toxic heavy metal, and mercury poisoning is known as acrodynia or pink disease. Similarly, lead, another toxic heavy metal, was at one time an integral part of painting. Metal Toxicology Handbook further explains and discusses the varying attributes of metals, discussing toxicity, safety, and proper human utilization of metals. Beginning with a broad overview of metals, metalloids, redox biology, and neurodegeneration and going further into the roles, benefits, and toxicity of metals with each section, the text contains 28 chapters from eminent researchers and scientists in their respective fields and is a must-have for anyone researching the potential toxicity in metals. Key Features Discusses the pathology of metal toxicity Highlights the benefits of metals Explains the mechanism and salient features of restoring metabolic homeostasis Highlights dose-dependent beneficial and adverse effects of vanadium safety and toxicity The initial introductory section provides a broad overview of metals, metalloids, redox biology, and neurodegeneration. The second section discusses the pathology of metal toxicity in two chapters, while the third section highlights the mechanism and salient features of restoring metabolic homeostasis in two chapters. The fourth section demonstrates the aspect of radionuclides toxicity. In a change of pace, the fifth section discusses the benefits of metals in four chapters. The sixth section, titled "Toxic Manifestations by Diverse Heavy Metals and Metalloids," provides fourteen chapters that discuss the toxicological mechanism and manifestation of individual metals. The editors have crafted a commentary titled "A Treatise on Metal Toxicity" and summarized a vivid scenario of metal toxicity and its consequences.

Biotechnology And Safety Assessment (Paperback): J.A. Thomas Biotechnology And Safety Assessment (Paperback)
J.A. Thomas
R1,863 Discovery Miles 18 630 Ships in 10 - 15 working days

This updated text explains how advances in mammalian and plant genetics contribute to better therapeutics agents and more wholesome foods. It addresses such topics as new pharmaceutical agents, agribiotechnology, safety evaluation of biotechnology-derived drugs, food safety, nutritional science, and regulatory and environmental aspects of genetically-modified organisms. New to this edition are chapters on biotherapeutics and herbicide-resistant crops. It should be of interest to biotechnology, toxicologists, pharmaceutical scientists, environmental scientists and agriculturists.

Exposure and Risk Assessment of Pesticide Use in Agriculture - Approaches, Tools and Advances (Paperback): Claudio Colosio,... Exposure and Risk Assessment of Pesticide Use in Agriculture - Approaches, Tools and Advances (Paperback)
Claudio Colosio, Aristidis M. Tsatsakis, Stefan Mandic-Rajcevic, Athanasios Alegakis
R4,000 Discovery Miles 40 000 Ships in 10 - 15 working days

Exposure and Risk Assessment of Pesticide Use in Agriculture: Approaches, Tools and Advances offers an overview of the different methods available in toxicology for pesticide exposure and risk assessment, ranging from the regulatory field, to in-field research studies. The book provides technical background on each method, describing known and grounded tools, new uses of tools and development prospects. This book is ideal for researchers in pesticide toxicology, exposure toxicology, toxicologic risk assessment, occupational hygiene and medicine, and pesticide toxicology as well as occupational health and industrial hygiene practitioners, regulatory experts of corporate and public bodies, and advanced students.

Animal-centric Care and Management - Enhancing Refinement in Biomedical Research (Paperback): Dorte Bratbo Sorensen, Sylvie... Animal-centric Care and Management - Enhancing Refinement in Biomedical Research (Paperback)
Dorte Bratbo Sorensen, Sylvie Cloutier, Brianna N. Gaskill
R1,436 Discovery Miles 14 360 Ships in 10 - 15 working days

The concept of the 3Rs (Refinement, Reduction and Replacement) has been used as a framework for improving the welfare of laboratory animals for the last half century. By establishing an animal-centric view on housing and management, Animal-centric Care and Management: Enhancing Refinement in Biomedical Research takes Russell and Burch's definition of Refinement as "elimination of inhumanities" and goes further. Rather than fitting animals into experimental conditions, it encourages readers to adjust conditions to better meet the behavioral, emotional, physical, and physiological needs and preferences of the animals. The team of expert authors, from the fields of laboratory animal science, ethology, biology as well as animal training, provide ideas for creating housing conditions and handling procedures that induce, to the best of current abilities and knowledge, a long-term positive state of mind in the animals under our care. This book is written for animal caretakers, animal health technicians, researchers, animal facility managers, laboratory animal veterinarians, and anyone who engages in work with living experimental animals or is interested in the continuous improvement of laboratory animal welfare. This interdisciplinary guide will act as a catalyst, resulting in multiple viewpoints and fields collaborating to optimize laboratory animal welfare.

Animal-centric Care and Management - Enhancing Refinement in Biomedical Research (Hardcover): Dorte Bratbo Sorensen, Sylvie... Animal-centric Care and Management - Enhancing Refinement in Biomedical Research (Hardcover)
Dorte Bratbo Sorensen, Sylvie Cloutier, Brianna N. Gaskill
R5,200 Discovery Miles 52 000 Ships in 10 - 15 working days

The concept of the 3Rs (Refinement, Reduction and Replacement) has been used as a framework for improving the welfare of laboratory animals for the last half century. By establishing an animal-centric view on housing and management, Animal-centric Care and Management: Enhancing Refinement in Biomedical Research takes Russell and Burch's definition of Refinement as "elimination of inhumanities" and goes further. Rather than fitting animals into experimental conditions, it encourages readers to adjust conditions to better meet the behavioral, emotional, physical, and physiological needs and preferences of the animals. The team of expert authors, from the fields of laboratory animal science, ethology, biology as well as animal training, provide ideas for creating housing conditions and handling procedures that induce, to the best of current abilities and knowledge, a long-term positive state of mind in the animals under our care. This book is written for animal caretakers, animal health technicians, researchers, animal facility managers, laboratory animal veterinarians, and anyone who engages in work with living experimental animals or is interested in the continuous improvement of laboratory animal welfare. This interdisciplinary guide will act as a catalyst, resulting in multiple viewpoints and fields collaborating to optimize laboratory animal welfare.

Toxicants in Food Packaging and Household Plastics - Exposure and Health Risks to Consumers (Hardcover, 2014 ed.): Suzanne M.... Toxicants in Food Packaging and Household Plastics - Exposure and Health Risks to Consumers (Hardcover, 2014 ed.)
Suzanne M. Snedeker
R5,077 R4,756 Discovery Miles 47 560 Save R321 (6%) Ships in 10 - 15 working days

This book serves as a comprehensive resource on toxicants that can be released from food packaging materials and household plastics. Chapters include sources and levels of chemical exposure, known and suspected health effects and the identification of data gaps with recommendations for further research. In addition, regulatory approaches and risk assessment challenges in the United States and Europe are discussed.

Chapters cover both the more widely known chemicals that can migrate from food packaging (bisphenol A, perfluorinated chemicals), and household plastics (lead, phthalates, brominated flame retardants), as well as chemicals that are just entering use in food packaging (nanomaterials in polymer food packaging) and chemicals recently identified as migrating from food packaging to food stuffs (phthalates, benzophenones, antimony, methylnaphthalene and the alkylphenols nonylphenol and octylphenol). Chapters on phthalates and brominated flame retardants discuss challenges that arise with the use of replacement chemicals. The health effect sections of chapters have drawn on a wide variety of toxicological endpoints and recommend approaches to better assess toxicological risks in vulnerable human populations.

Reflecting the global nature of our food supply and household consumer goods, contributions have been drawn from international experts. A wide range of scientists will find this book to be useful, including toxicologists, environmental health scientists, food scientists, and regulators.

Immunotoxicity Testing - Methods and Protocols (Hardcover, 2010 ed.): Rodney R. Dietert Immunotoxicity Testing - Methods and Protocols (Hardcover, 2010 ed.)
Rodney R. Dietert
R2,962 Discovery Miles 29 620 Ships in 18 - 22 working days

Recent critical advances in the field of immunotoxicology have led to incredible contributions to basic science, including crucial improvements in human risk assessment. In Immunotoxicity Testing: Methods and Protocols, expert researchers explore these changes, providing the reader with current, lab-ready procedures, along with the corresponding background information that is necessary to identify effective testing approaches for chemicals and drugs. Among the first volumes to meld consideration of immunotoxicity testing strategies with a comprehensive presentation of detailed laboratory protocols, chapters include a description of the evolution of immunotoxicity testing, a look at the importance of immunotoxicity testing for health risk reduction, and ideas concerning the future of the field. Composed in the highly successful Methods in Molecular Biology(tm) series format, most chapters contain a brief introduction, step-by-step methods, a list of necessary materials, and a Notes section which shares tips from the experts on troubleshooting and avoiding known pitfalls. Comprehensive and innovative, Immunotoxicity Testing: Methods and Protocols is a critical, one-stop reference resource for the most important and commonly used laboratory protocols in immunotoxicology.

PCR Protocols in Molecular Toxicology (Hardcover): John P. Vanden Heuvel PCR Protocols in Molecular Toxicology (Hardcover)
John P. Vanden Heuvel
R5,207 Discovery Miles 52 070 Ships in 10 - 15 working days

Conducting studies of natural and man-made air contaminants is a specialized research activity that draws upon skills from a variety of disciplines including toxicology, pharmacology, industrial hygiene, and environmental health. Methods in Inhalation Toxicology describes how knowledge from these disciplines is integrated into the design and conduct of inhalation studies. Each of the vital aspects of conducting these studies is discussed in detail, including the use of animal subjects and the related quality control and ethical considerations, air purification methodology, exposure atmosphere generation and characterization, inhalation exposure systems, and real-time and post-exposure biological assessments. These methods will enable you to conduct inhalation studies, easily adding any specific measures of particular interest to your research. The book covers techniques needed to: provide suitable clean air for experiments correctly generate the particles and gases being studied select the proper exposure system monitor the exposure prepare tissues for study ensure that animals do not have confounding lung disease The helpful descriptions and detailed lists of suppliers of preferred equipment and materials will help you to perform valid, reproducible inhalation toxicology studies. Methods in Inhalation Toxicology is a perfect textbook for students in toxicology programs, as well as for scientists who conduct inhalation studies in both academic and industrial environments.

High-Throughput Screening Assays in Toxicology (Hardcover, 1st ed. 2016): Hao Zhu, Menghang Xia High-Throughput Screening Assays in Toxicology (Hardcover, 1st ed. 2016)
Hao Zhu, Menghang Xia
R2,703 Discovery Miles 27 030 Ships in 18 - 22 working days

This book focuses on recently developed High Throughput Screening (HTS) assay protocols, many involved in the ToxCast and/or Tox21 initiatives, and the relevant HTS data analysis techniques. Divided into three sections, in vitro assays, in vivo assays, and computational techniques to analyze HTS data are all examined. Written for the highly successful Methods in Molecular Biology series, most chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Authoritative and practical, High Throughput Screening Assays in Toxicology serves as a valuable reference resource for translating new HTS techniques into standardized chemical toxicity assessment tools in order to advance modern toxicology research to a new era where HTS techniques can partially replace the prevailing animal models.

Emerging Chemical Risks in the Working Environment (Book): Magorzata Posniak Emerging Chemical Risks in the Working Environment (Book)
Magorzata Posniak
R1,414 Discovery Miles 14 140 Ships in 10 - 15 working days
Statistical Models in Toxicology (Hardcover): Mehdi Razzaghi Statistical Models in Toxicology (Hardcover)
Mehdi Razzaghi
R3,366 Discovery Miles 33 660 Ships in 10 - 15 working days

Statistical Models in Toxicology presents an up-to-date and comprehensive account of statistical theory topics that occur in toxicology. The attention given by statisticians to the problem of health risk estimation for environmental and occupational exposures in the last few decades has created excitement and optimism among both statisticians and toxicologists. The development of modern statistical techniques with solid mathematical foundations in the twentieth century and the advent of modern computers in the latter part of the century gave way to the development of many statistical models and methods to describe toxicological processes and attempts to solve the associated problems. Not only have the models enjoyed a high level of elegance and sophistication mathematically, but they are widely used by industry and government regulatory agencies. Features: Focuses on describing the statistical models in environmental toxicology that facilitate the assessment of risk mainly in humans. The properties and shortfalls of each model are discussed, and its impact in the process of risk assessment is examined. Discusses models that assess the risk of mixtures of chemicals. Presents statistical models that are developed for risk estimation in different aspects of environmental toxicology including cancer and carcinogenic substances. Includes models for developmental and reproductive toxicity risk assessment, risk assessment in continuous outcomes, and developmental neurotoxicity. Contains numerous examples and exercises. Statistical Models in Toxicology introduces a wide variety of statistical models that are currently utilized for dose-response modeling and risk analysis. These models are often developed based on design and regulatory guidelines of toxicological experiments. The book is suitable for practitioners or it can be used as a textbook for advanced undergraduate or graduate students of mathematics and statistics.

Lead Poisoning - Exposure, Abatement, Regulation (Paperback): Joseph J. Breen, Cindy R. Stroup Lead Poisoning - Exposure, Abatement, Regulation (Paperback)
Joseph J. Breen, Cindy R. Stroup
R967 Discovery Miles 9 670 Ships in 10 - 15 working days

Lead Poisoning discusses one of the most critical and preventable environmentally induced illnesses. The actual toll lead poisoning takes on society cannot be measured fully due to the "silent" nature of health effects, such as subtle intellectual deficits and neurological damage, caused by chronic low-level exposures. This book covers every major topic on the subject, including lead poisoning in children, sources of contamination, state-of-the-art sampling and analytical measurement methods, the newest studies on low-cost abatement methods, and much more. This reference is the most comprehensive presentation of issues currently available under one cover. The text is divided into three major parts. Part I provides insights from studies assessing lead exposures from paint, dust, soil, and lead battery recycling operations. The second part is a unique collection of strategic federal policy statements from the U.S. EPA, HUD, and HEW-CDC. It details the National Implementation Plan as well as a local government's efforts to provide low-cost effective risk communication and public outreach to the community. The next part offers seven chapters on analytical issues in the measurement of lead in blood, paint, dust, and soils. Part IV, Sampling Methods and Statistical Issues, rounds out the technical portion of the volume. The relationships among lead levels in biological and environmental media are investigated and the interpretive problems discussed. The use of multi-element analysis of environmental samples as an approach to investigate sources is described. The book finishes with its most unique feature-OPPT's Check Our Kids for Lead Program, one organization's effort to empower its employees to make a personal difference in confronting the problem of lead poisoning in children. The Program serves as a model for other government organizations (federal, state, and local), university and community organizations, and corporations to educate them and take personal and corporate responsibility for addressing this important and environmental health problem.

Guide to Foodborne Pathogens 2e (Hardcover, 2nd Edition): R Labbe Guide to Foodborne Pathogens 2e (Hardcover, 2nd Edition)
R Labbe
R4,647 Discovery Miles 46 470 Ships in 10 - 15 working days

"Guide to Foodborne Pathogens" covers pathogens--bacteria, viruses, and parasites--that are most commonly responsible for foodborne illness. An essential guide for anyone in the food industry, research, or regulation who needs to ensure or enforce food safety, the guide delves into the nature of illnesses, the epidemiology of pathogens, and current detection, prevention, and control methods. The guide further includes chapters on new technologies for microbial detection and the globalization of the food supply, seafood toxins, and other miscellaneous agents.

Why the Dose Matters - Assessing the Health Risk of Exposure to Toxicants (Hardcover): Urs A. Boelsterli Why the Dose Matters - Assessing the Health Risk of Exposure to Toxicants (Hardcover)
Urs A. Boelsterli
R4,501 Discovery Miles 45 010 Ships in 10 - 15 working days

• Familiarizes the reader with the basic terminology applied to toxicology • Explains how the exposure to a chemical is critically important when estimating the human health risk • Provides a balanced approach, neither spotlighting sensational findings nor downplaying potential real risks

Ophthalmic Toxicology (Paperback, 2nd edition): G.C.Y. Chiou Ophthalmic Toxicology (Paperback, 2nd edition)
G.C.Y. Chiou
R1,884 Discovery Miles 18 840 Ships in 10 - 15 working days

Thoroughly revised and updates, this new edition of Ophthalmic Toxicology retains its uniqueness in covering all aspects of ophthalmic toxicology. With chapters from leading authorities incorporating the latest developments in the field, including a new chapter on the molecular basis of ophthalmic toxicity, this edition covers such topics as: *the history of ophthalmic toxicology *specific actions/affinities of ophthalmic poisons to various eye tissues and to animal species *research methods in vivo and in vitro *ophthalmic toxicities of representative chemicals via systemic and/or local delivery *medical treatment of chemical ocular injuries This one-of-a-kind reference on ophthalmic toxicology will be invaluable to all professionals in academia, industry, clinics, research laboratories, and government agencies.

Statistics for Toxicologists (Paperback): David S. Salsburg Statistics for Toxicologists (Paperback)
David S. Salsburg
R1,916 Discovery Miles 19 160 Ships in 10 - 15 working days

This book explains how the computer programs work and why and when they can be applied to problems in toxicology. It discusses the statistical models used and their applications in a general fashion. The book overviews the problems that can arise from the blind use of the statistical models.

Control of Foodborne Microorganisms (Paperback): Vijay K. Juneja, John N. Sofos Control of Foodborne Microorganisms (Paperback)
Vijay K. Juneja, John N. Sofos
R1,906 Discovery Miles 19 060 Ships in 10 - 15 working days

Presents the latest research in the control of foodborne pathogens. Emphasizes traditional and emerging techniques as well as current applications for the inactivation of microorganisms to reduce illness and enhance food safety and quality.

Pathophysiology and Treatment of Inhalation Injuries (Paperback): J. Loke Pathophysiology and Treatment of Inhalation Injuries (Paperback)
J. Loke
R1,909 Discovery Miles 19 090 Ships in 10 - 15 working days

This book covers several aspects of inhalation toxicology ranging from inhalation drug abuse to battlefield chemical inhalation lung injury, and emphasizes pathophysiology and therapy.

Guide to Cytochromes P450 - Structure and Function, Second Edition (Paperback, 2nd edition): David Lewis Guide to Cytochromes P450 - Structure and Function, Second Edition (Paperback, 2nd edition)
David Lewis
R1,920 Discovery Miles 19 200 Ships in 10 - 15 working days

This book focuses on human Cytochrome P450s and drug metabolism in Man. It describes the structures of the P450s, and reviews the methodology available to determine their nature, including molecular modelling, X-ray crystallography, spectroscopy, and molecular biology.

Toxic Tort - Medical and Legal Elements Third Edition (Hardcover): Ernest P. M. D. J. D. Chiodo Toxic Tort - Medical and Legal Elements Third Edition (Hardcover)
Ernest P. M. D. J. D. Chiodo
R747 Discovery Miles 7 470 Ships in 9 - 17 working days
Toxicology of the Nose and Upper Airways (Paperback): John B. Morris, Dennis J. Shusterman Toxicology of the Nose and Upper Airways (Paperback)
John B. Morris, Dennis J. Shusterman
R1,948 Discovery Miles 19 480 Ships in 10 - 15 working days

The application of molecular biologic methods, recognition of neurogenic inflammatory processes, and utilization of genetic knockout animals are just some of the advances in toxicology of the upper airways in recent years. Toxicology of the Nose and Upper Airways presents a culmination of knowledge gained as a result of both human and experimental animal studies over the past decade. With contributions from internationally recognized leaders in the fields of experimental toxicology, respiratory medicine, otolaryngology, allergy, and sensory science, this volume: Examines the effect of selected pollutants on the upper airways of both humans and experimental animals-emphasizing mechanistic issues in the process Discusses epidemiologic findings from populations exposed occupationally or environmentally, comparing and contrasting alternative risk assessment approaches Features clear chapter organization with sections on structure and function, dosimetry and toxicokinetics, functional and pathologic responses and their measurement, responses to specific agents, risk assessment, and special topics This volume is an essential reference for pharmacologists and toxicologists concerned with the nose and upper airway, as well as clinicians, risk assessors, and sensory scientists.

Paraoxonase (PON1) in Health and Disease - Basic and Clinical Aspects (Hardcover, 2002 ed.): Lucio G. Costa, Clement E. Furlong Paraoxonase (PON1) in Health and Disease - Basic and Clinical Aspects (Hardcover, 2002 ed.)
Lucio G. Costa, Clement E. Furlong
R2,667 Discovery Miles 26 670 Ships in 18 - 22 working days

The journey to find genes responsible for determining sensitivity or resistance to specific insecticides led to the paraoxonase (PON1) gene on human chromosome 7. This gene encodes a 355 amino acid protein that is localized on the high density lipoprotein (HDL) particles in plasma. Characterization of this gene revealed that different individuals expressed both different forms of this enzyme with amino acid substitutions at positions 55 and 192 as well as different levels of this protein. Additional studies showed that mutations in the regulatory region of the PON1 gene contributed to the very different levels of plasma PON1 among individuals. It turned out that both the level of the enzyme as well as the amino acid present at position 192 (glutamine or arginine) are important in determining resistance to the active forms of specific organophosphorus insecticides, especially diazinon and chlorpyrifos. The position 192 amino acid also determined whether an individual's plasma hydrolyzed the nerve agents soman and sarin at high or low rates. It is not yet known whether these different rates of hydrolysis observed in biochemical assays reflect differences in sensitivity of individuals to nerve agents. Taken together, all of the experiments carried out to date indicate that engineered recombinant PON1 is an excellent candidate to use for treating cases of poisoning by specific organophosphorus compounds. The available data on the relationship of PON1 levels and position 192 genotype led us to introduce the term PON1 status to describe an individual's PON1 plasma level as well as their position 192 genotype.

The characterization of the genetic variations of the PON1 gene together withexperiments showing that HDL can protect the lipids in low density lipoprotein particles (LDL) from oxidation and that it was PON1 that was responsible for this protection have opened an entirely new area of investigation, the role of PON1 in protecting against vascular disease.

More recent reports have noted that PON1 also metabolizes a number of drugs, activating some and inactivating others.

This book describes the recent advances in understanding the role of PON1 in both cardiovascular disease and toxicology of insecticide exposure as well as some of the recent information indicating an important possible role in the pharmacokinetics of drug metabolism. The final chapter of the book provides an overview of the areas of PON1 research and suggests future directions for research on PON1 as well as the related, linked genes PON2 and PON3.

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