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Author: National Research Council
Publisher: National Academies Press
ISBN: 0309109922
Category : Nature
Languages : en
Pages : 217
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Book Description
Advances in molecular biology and toxicology are paving the way for major improvements in the evaluation of the hazards posed by the large number of chemicals found at low levels in the environment. The National Research Council was asked by the U.S. Environmental Protection Agency to review the state of the science and create a far-reaching vision for the future of toxicity testing. The book finds that developing, improving, and validating new laboratory tools based on recent scientific advances could significantly improve our ability to understand the hazards and risks posed by chemicals. This new knowledge would lead to much more informed environmental regulations and dramatically reduce the need for animal testing because the new tests would be based on human cells and cell components. Substantial scientific efforts and resources will be required to leverage these new technologies to realize the vision, but the result will be a more efficient, informative and less costly system for assessing the hazards posed by industrial chemicals and pesticides.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309109922
Category : Nature
Languages : en
Pages : 217
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Book Description
Advances in molecular biology and toxicology are paving the way for major improvements in the evaluation of the hazards posed by the large number of chemicals found at low levels in the environment. The National Research Council was asked by the U.S. Environmental Protection Agency to review the state of the science and create a far-reaching vision for the future of toxicity testing. The book finds that developing, improving, and validating new laboratory tools based on recent scientific advances could significantly improve our ability to understand the hazards and risks posed by chemicals. This new knowledge would lead to much more informed environmental regulations and dramatically reduce the need for animal testing because the new tests would be based on human cells and cell components. Substantial scientific efforts and resources will be required to leverage these new technologies to realize the vision, but the result will be a more efficient, informative and less costly system for assessing the hazards posed by industrial chemicals and pesticides.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309048753
Category : Science
Languages : en
Pages : 402
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Book Description
Many of the pesticides applied to food crops in this country are present in foods and may pose risks to human health. Current regulations are intended to protect the health of the general population by controlling pesticide use. This book explores whether the present regulatory approaches adequately protect infants and children, who may differ from adults in susceptibility and in dietary exposures to pesticide residues. The committee focuses on four major areas: Susceptibility: Are children more susceptible or less susceptible than adults to the effects of dietary exposure to pesticides? Exposure: What foods do infants and children eat, and which pesticides and how much of them are present in those foods? Is the current information on consumption and residues adequate to estimate exposure? Toxicity: Are toxicity tests in laboratory animals adequate to predict toxicity in human infants and children? Do the extent and type of toxicity of some chemicals vary by species and by age? Assessing risk: How is dietary exposure to pesticide residues associated with response? How can laboratory data on lifetime exposures of animals be used to derive meaningful estimates of risk to children? Does risk accumulate more rapidly during the early years of life? This book will be of interest to policymakers, administrators of research in the public and private sectors, toxicologists, pediatricians and other health professionals, and the pesticide industry.
Author: Donald J. Ecobichon
Publisher: CRC Press
ISBN: 9780849385544
Category : Medical
Languages : en
Pages : 240
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Book Description
This substantially updated edition presents fundamental principles and concepts behind the various types of toxicological studies, and explains how to design and conduct studies and interpret results. The text explains the increasing need to monitor, assess, and reevaluate the toxicity database of many agents and evaluates the place of individual studies in the overall toxicological assessment of a chemical. Concise descriptions of the formats of in vivo and in vitro studies and methods used in assessing endpoints of toxicity make this an essential introduction and guide for anyone who needs to understand or conduct toxicological studies. Reflecting increasing interest in the "Three Rs" (Reducing, Refining, and Replacement of existing animal tests) in recent years, the Second Edition includes much more information on a variety of new alternative testing protocols. Particular attention is given to the new in vitro alternative testing procedures being incorporated into EEC regulations. The text also covers studies required by regulatory agencies around the world.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309164869
Category : Nature
Languages : en
Pages : 270
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Book Description
Toxicity testing in laboratory animals provides much of the information used by the Environmental Protection Agency (EPA) to assess the hazards and risks associated with exposure to environmental agents that might harm public health or the environment. The data are used to establish maximum acceptable concentrations of environmental agents in drinking water, set permissible limits of exposure of workers, define labeling requirements, establish tolerances for pesticides residues on food, and set other kinds of limits on the basis of risk assessment. Because the number of regulations that require toxicity testing is growing, EPA called for a comprehensive review of established and emerging toxicity-testing methods and strategies. This interim report reviews current toxicity-testing methods and strategies and near-term improvements in toxicity-testing approaches proposed by EPA and others. It identifies several recurring themes and questions in the various reports reviewed. The final report will present a long-range vision and strategic plan to advance the practices of toxicity testing and human health assessment of environmental contaminants.
Author: Shayne C. Gad
Publisher: Academic Press
ISBN: 008052592X
Category : Medical
Languages : en
Pages : 561
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Book Description
Acute toxicology testing provides the first line of defense against potentially dangerous chemicals. This book is a complete and practical guide to conducting and interpreting all regulatory required and commonly used acute toxicity tests. It presents detailed protocols for all of the common test designs and reviews their development and objectives. Acute Toxicology Testing, Second Edition will interest not only workers in the pharmaceutical industry, but also researchers and students in toxicology and public health.Key Features* Over 100 tables summarizing and interpreting results* Complete coverage of all major test designs and their limitations and advantages* Current status of alternative test designs and models
Author: Frank A Barile
Publisher: CRC Press
ISBN: 1842145282
Category : Medical
Languages : en
Pages : 368
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Book Description
Nationally, toxicology programs have evolved from a traditional exploration of the chemistry and applied toxicity of chemicals and drugs to a more comprehensive study of toxicology and toxicology testing as independent entities. Consequently, the second edition of Principles of Toxicology Testing starts with basic toxicological principles, including absorption, distribution, metabolism, and elimination of toxins, including chemicals and drugs. The book then continues with animal (in vivo) and in vitro toxicology testing methods associated with toxicological analysis and preclinical drug development. As in the first edition, the book begins with an introduction into the fundamentals of toxicology (Section I) to prepare readers for the subsequent topics and continues through with a discussion of toxicokinetics and human risk assessment. This introductory material is useful in understanding the applications of toxicology testing. Section II describes the fundamental principles of toxicology testing in animals in greater detail. This section describes acute toxicity studies as well as subchronic and chronic studies performed on animals. Special emphasis is placed on study design and determination of classical indicators for acute and chronic testing, such as the LD50. The book examines other short- and long-term animal toxicity testing methodologies, including dermal, ocular, and reproductive toxicity testing. In addition, mutagenicity and carcinogenicity studies are also discussed in separate chapters. Section III introduces and discusses in vitro alternatives to animal toxicology tests. This section emphasizes cell culture methodology and cellular methods for acute systemic toxicity, target organ toxicity, and local toxicity. The contributors present the advantages and disadvantages of alternative methods. They also describe the use of high-throughput screening and its applications, the concepts of standardization and validation of in vitro techniques (especially large, organized validation efforts currently supported by US and EU regulatory agencies), and the theories supporting the development of in vitro methodologies. This second edition is a must-read for undergraduate and graduate toxicology students. Industrial and academic research centers will also find the text useful for establishing a toxicology testing laboratory.
Author: Committee on Methods for Toxicity Tests with Aquatic Organisms
Publisher:
ISBN:
Category : Aquatic animals
Languages : en
Pages : 82
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Book Description
Author: Chantra Eskes
Publisher: Springer
ISBN: 3319338269
Category : Medical
Languages : en
Pages : 418
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Book Description
This book provides information on best practices and new thinking regarding the validation of alternative methods for toxicity testing. It covers the validation of experimental and computational methods and integrated approaches to testing and assessment. Validation strategies are discussed for methods employing the latest technologies such as tissue-on-a-chip systems, stem cells and transcriptomics, and for methods derived from pathway-based concepts in toxicology. Validation of Alternative Methods for Toxicity Testing is divided into two sections, in the first, practical insights are given on the state-of-the-art and on approaches that have resulted in successfully validated and accepted alternative methods. The second section focuses on the evolution of validation principles and practice that are necessary to ensure fit-for-purpose validation that has the greatest impact on international regulatory acceptance of alternative methods. In this context validation needs to keep pace with the considerable scientific advancements being made in toxicology, the availability of sophisticated tools and techniques that can be applied in a variety of ways, and the increasing societal and regulatory demands for better safety assessment. This book will be a useful resource for scientists in the field of toxicology, both from industry and academia, developing new test methods, strategies or techniques, as well as Governmental and regulatory authorities interested in understanding the principles and practicalities of validation of alternative methods for toxicity testing.
Author: Ederio Dino Bidoia
Publisher: Humana Press
ISBN: 9781493974245
Category : Medical
Languages : en
Pages : 397
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Book Description
This volume presents a broad compendium of techniques used in biodegradation and toxicological research. Through both legacy and up-to-date approaches to practical methodologies with proven results, the book examines the role and applications of analytical biodegradation quantification as it applies to the environmental sciences, particularly in the range of byproducts that are usually linked to toxicology, and the test organisms most often used in toxicity testing. Topics include scientific and technical feasibility studies, contaminant impacts evaluation, study design and analytical techniques, key methodologies required to prepare the biodegradation and toxicology protocols, as well as the handling of microbial communities related to such processes. Written for the Methods in Pharmacology and Toxicology series, chapters deal with a critical discussion of laboratory scale experiments, as well as full scale in situ and ex situ apparatus, with each chapter containing both a discursive section along with a detailed methods section. Detailed and authoritative, Toxicity and Biodegradation Testing is primarily focused toward the environmental sciences researcher, while the range of techniques also provides an introduction to biodegradation and toxicology methods for researchers outside of the field.
Author: National Research Council
Publisher: National Academies Press
ISBN: 030904894X
Category : Science
Languages : en
Pages : 668
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Book Description
The public depends on competent risk assessment from the federal government and the scientific community to grapple with the threat of pollution. When risk reports turn out to be overblownâ€"or when risks are overlookedâ€"public skepticism abounds. This comprehensive and readable book explores how the U.S. Environmental Protection Agency (EPA) can improve its risk assessment practices, with a focus on implementation of the 1990 Clean Air Act Amendments. With a wealth of detailed information, pertinent examples, and revealing analysis, the volume explores the "default option" and other basic concepts. It offers two views of EPA operations: The first examines how EPA currently assesses exposure to hazardous air pollutants, evaluates the toxicity of a substance, and characterizes the risk to the public. The second, more holistic, view explores how EPA can improve in several critical areas of risk assessment by focusing on cross-cutting themes and incorporating more scientific judgment. This comprehensive volume will be important to the EPA and other agencies, risk managers, environmental advocates, scientists, faculty, students, and concerned individuals.
