Download or read book The Basis of Toxicity Testing written by Donald J. Ecobichon and published by CRC Press. This book was released on 1997-08-11 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Toxicity Testing for Assessment of Environmental Agents written by National Research Council and published by National Academies Press. This book was released on 2006-04-07 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Toxicity Testing in the 21st Century written by National Research Council and published by National Academies Press. This book was released on 2007-11-05 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Pesticides in the Diets of Infants and Children written by National Research Council and published by National Academies Press. This book was released on 1993-02-01 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Science and Judgment in Risk Assessment written by National Research Council and published by National Academies Press. This book was released on 1994-01-01 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Handbook of Acute Toxicity of Chemicals to Fish and Aquatic Invertebrates written by W. Waynon Johnson and published by . This book was released on 1980 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Methods for Acute Toxicity Tests with Fish Macroinvertebrates and Amphibians written by Committee on Methods for Toxicity Tests with Aquatic Organisms and published by . This book was released on 1975 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Basis of Toxicity Testing written by Donald J. Ecobichon and published by . This book was released on 1992 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1. Introduction; 2. Preliminary considerations; 3. Acute toxicity studies; 4. Subchronic and chronic studies; 5. Reproductive toxicology.
Download or read book Short term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms written by and published by . This book was released on 1994 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Intentional Human Dosing Studies for EPA Regulatory Purposes written by National Research Council and published by National Academies Press. This book was released on 2004-06-04 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: The EPA commissioned The National Academies to provide advice on the vexing question of whether and, if so, under what circumstances EPA should accept and consider intentional human dosing studies conducted by companies or other sources outside the agency (so-called third parties) to gather evidence relating to the risks of a chemical or the conditions under which exposure to it could be judged safe. This report recommends that such studies be conducted and used for regulatory purposes only if all of several strict conditions are met, including the following: The study is necessary and scientifically valid, meaning that it addresses an important regulatory question that can't be answered with animal studies or nondosing human studies; The societal benefits of the study outweigh any anticipated risks to participants. At no time, even when benefits beyond improved regulation exist, can a human dosing study be justified that is anticipated to cause lasting harm to study participants; and All recognized ethical standards and procedures for protecting the interests of study participants are observed. In addition, EPA should establish a Human Studies Review Board (HSRB) to evaluate all human dosing studiesâ€"both at the beginning and upon completion of the experimentsâ€"if they are carried out with the intent of affecting the agency's policy-making.
Download or read book Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms written by and published by DIANE Publishing. This book was released on 2002 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Test No 223 Avian Acute Oral Toxicity Test written by OECD and published by OECD Publishing. This book was released on 2010-07-23 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes procedures designed to estimate the acute oral toxicity of substances to birds, and it provides three testing options: (1) limit dose test, (2) LD50-slope test, and (3) LD50-only test. The LD50-slope and LD50-only ...
Download or read book Environmental Neurotoxicology written by National Research Council and published by National Academies Press. This book was released on 1992-02-01 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientists agree that exposure to toxic agents in the environment can cause neurological and psychiatric illnesses ranging from headaches and depression to syndromes resembling parkinsonism. It can even result in death at high exposure levels. The emergence of subclinical neurotoxicity-the concept that long-term impairments can escape clinical detection-makes the need for risk assessment even more critical. This volume paves the way toward definitive solutions, presenting the current consensus on risk assessment and environmental toxicants and offering specific recommendations. The book covers: The biologic basis of neurotoxicity. Progress in the application of biologic markers. Reviews of a wide range of in vitro and in vivo testing techniques. The use of surveillance and epidemiology to identify neurotoxic hazards that escape premarket screening. Research needs. This volume will be an important resource for policymakers, health specialists, researchers, and students.
Download or read book Toxicity Testing of Chemicals written by United States. Congress. Senate. Committee on Environment and Public Works. Subcommittee on Toxic Substances and Environmental Oversight and published by . This book was released on 1984 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Casarett and Doull s Toxicology written by Louis J. Casarett and published by McGraw-Hill Professional Publishing. This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This newest addition to the Companion Handbook Series is perfect for the toxicologist or pharmacy student who requires a brief introduction to the fundamental principles of toxicology but does not have immediate access to the textbook, nor the time for consultation. Fully page referenced to the classic text in the field, concepts are organized and presented in a logical progression from general principles to specific topics such as organ system toxicology, specific agent toxicology, and environmental toxicology. Where possible the information is summarized in tables or presented in outline format.
Download or read book Small Animal Toxicology E Book written by Michael E. Peterson and published by Elsevier Health Sciences. This book was released on 2013-08-07 with total page 928 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diagnose and determine treatment for toxic exposures in small animals with this quick reference! Small Animal Toxicology, 3rd Edition covers hundreds of potentially toxic substances, providing the information you need to manage emergency treatment and prevent poisonings in companion animals. To help you identify an unknown poison, this guide provides a list of potential toxins based on clinical signs or symptoms. It also includes a NEW color insert with 85 full-color photographs of toxic plants and of lesions associated with various poisonings. Written by respected veterinarian Michael E. Peterson and board-certified veterinary toxicologist Patricia A. Talcott, along with a team of expert contributors, this edition covers a wide variety of topics including toxicodynamics, toxicokinetics, effective history taking, recognizing clinical signs of toxic exposures, managing emergencies, and supportive care of the poisoned patient. Comprehensive coverage of toxins/poisons includes the full range of substances from acetaminophen to zinc, including home products, prescription medicines, recreational drugs, and more. Guidelines to evaluation, diagnosis and treatment include examinations of the source, toxic dose, toxicokinetics, clinical signs, minimum database, confirming tests, treatment progress and differential diagnosis for each specific toxicant. Coverage of common poisonous substances includes grapes and raisins, nicotine, mercury, mushrooms, Christmas-time plants, and snake and spider venoms. Toxicological Concepts section provides information on toxicologic principles such as history taking, providing supportive care, and managing emergency treatment. General Exposures section addresses nontraditional toxicology such as indoor environmental air, pesticides, pharmaceuticals, and toxicities in pregnant and lactating animals. Miscellaneous Toxicant Groups section covers commonly encountered specific toxicants, the proper use of diagnostic laboratories, use of human poison control centers, and antidotes for specific toxins. More than 50 international contributors provide up-to-date, authoritative advice on treating poisonings and intoxications. 8 NEW chapters cover topics including legal considerations in toxicology cases, responding to mass exposures, and poisonings in birds, small mammals, and geriatric patients. NEW color insert shows 85 of the most commonly encountered toxic substances for at-a-glance identification. UPDATED Signs and Symptoms index makes it easier to find information on a toxic agent by presenting signs rather than requiring the formulation of a diagnosis. UPDATED information on agents most likely to cause a toxic reaction includes natural flea products and an expanded section on human medications. NEW quick-access format with bold headings and convenient tables and boxes allows quick retrieval of information in emergency situations.
Download or read book OECD Guidelines for Testing of Chemicals written by Organisation for Economic Co-operation and Development and published by Organisation for Economic Co-operation and Development ; [Montréal : Renouf]. This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
