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Author: G.E. Paget
Publisher: Springer Science & Business Media
ISBN: 9401166390
Category : Medical
Languages : en
Pages : 234
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Book Description
Topics in Toxicology Toxicology is a science that stands at the intersection of several interests and disciplines. These intersecting forces are by no means all scientific since some are legal and some are commercial. All have valid things to say about the conduct and interpretation of toxicity experiments. The practising toxicologist must bear all these sometimes conflicting forces in mind as he carries out his duties. This is especially true, of course, of the toxicologist in industry. Toxicology is also a field in which contract research particularly flourishes and a number of major contract research companies have established over the years a reputation for contributing usefully to the practice of this skill. These contract research organisations are particu larly favoured to develop an appreciation of the problems of the industrial toxicologist, since it is very common for such a company to service the toxicological needs of companies in several sectors of industry producing new chemical compounds, and the contract research company, therefore, is aware of a wider diversity of problems than probably affects a single toxicologist in one industry.
Author: G.E. Paget
Publisher: Springer Science & Business Media
ISBN: 9401166390
Category : Medical
Languages : en
Pages : 234
Get Book Here
Book Description
Topics in Toxicology Toxicology is a science that stands at the intersection of several interests and disciplines. These intersecting forces are by no means all scientific since some are legal and some are commercial. All have valid things to say about the conduct and interpretation of toxicity experiments. The practising toxicologist must bear all these sometimes conflicting forces in mind as he carries out his duties. This is especially true, of course, of the toxicologist in industry. Toxicology is also a field in which contract research particularly flourishes and a number of major contract research companies have established over the years a reputation for contributing usefully to the practice of this skill. These contract research organisations are particu larly favoured to develop an appreciation of the problems of the industrial toxicologist, since it is very common for such a company to service the toxicological needs of companies in several sectors of industry producing new chemical compounds, and the contract research company, therefore, is aware of a wider diversity of problems than probably affects a single toxicologist in one industry.
Author: Colin S. Cooper
Publisher: Springer Science & Business Media
ISBN: 3642747787
Category : Medical
Languages : en
Pages : 482
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Book Description
I have been privileged to witness and participate in the great growth of knowledge on chemical carcinogenesis and mutagenesis since 1939 when I entered graduate school in biochemistry at the University of Wisconsin Madison. I immediately started to work with the carcinogenic aminoazo dyes un der the direction of Professor CARL BAUMANN. In 1942 I joined a fellow graduate student, ELIZABETH CA VERT, in marriage and we soon commenced a joyous part nership in research on chemical carcinogenesis at the McArdle Laboratory for Cancer Research in the University of Wisconsin Medical School in Madison. This collaboration lasted 45 years. I am very grateful that this volume is dedi cated to the memory of Elizabeth. The important and varied topics that are reviewed here attest to the continued growth of the fields of chemical car cinogenesis and mutagenesis, including their recent and fruitful union with viral oncology. I feel very optimistic about the application of knowledge in these fields to the eventual solution of numerous problems, including the detection and estimation of the risks to humans of environmental chemical carcinogens and re lated factors.
Author: Alexander Hollaender
Publisher: Springer Science & Business Media
ISBN: 1461321476
Category : Medical
Languages : en
Pages : 316
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Book Description
Volume 9 of Chemical Mutagens consists mainly of chapters discussing the development and validation of short-term assays to detect the mutagenic effects of environmental chemicals. These chapters include an assay with the grasshopper neuroblast, a comparison of mutagenic responses of human lung-derived and skin-derived diploid fibroblasts, a forward-mutation assay in Salmonella, a multigene sporulation test in Bacillus subtilis, a specific locus assay in mouse lymphoma cells, a study of the induction of bacteriophage lambda, and the granuloma pouch assay. In addition, there are two chapters on the identification of mutagens in cooked food and in human feces. Frederick 1. de Serres Research Triangle Park, North Carolina vii Contents Chapter 1 The Grasshopper Neuroblast Short-Term Assay for Evaluating the Effects of Environmental Chemicals on Chromosomes and Cell Kinetics 1 Mary Esther Gaulden, Jan C. Liang, and Martha J. Ferguson 1. Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2. Embryo Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. 1. Species. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. 2. Origin of Colonies . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. 3. Life Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2. 4. Colony Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 6 2. 5. Pathology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 2. 6. Allergy to Grasshoppers . . . . . . . . . . . . . . . . . . . . . . 14 3. Grasshopper Egg, Embryo, and Cells . . . . . . . . . . . . . . . . . 14 3. 1. The Egg Shell and Membranes . . . . . . . . . . . . . . . . . 14 3. 2. Embryonic Development . . . . . . . . . . . . . . . . . . . . . . 17 3. 3. Cells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4. Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 4. 1. Exposure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 4. 2. Preparation of Embryos for Cell Analysis . . . . . . . . . 34 4. 3. Analysis of Mutagen Effects. . . . . . . . . . . . . . . . . 40 . . . 5. Response of the Grasshopper Neuroblast to Mutagens . . . . 50 5. 1. Reproducibility of Data . . . . . . . . . . . . . . . . . . . . . . . 50 5. 2. Radiation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 5. 3. Chemical Mutagens . . . . . . . . . . . . . . . . . . . . . . . . . .
Author: W. J. Hunter
Publisher: Elsevier
ISBN: 1483140083
Category : Medical
Languages : en
Pages : 429
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Book Description
The Evaluation of Toxicological Data for the Protection of Public Health: Proceedings of the International Colloquium, Luxembourg, December 1976 focuses on the review of toxicological tests and methods used in toxicological evaluation of chemicals and reconsideration of these procedures in identifying decision-making processes involved in the protection of public health. The selection first discusses reviews of toxicological tests, including introductory remarks and comments on acute toxicity; problems associated with the testing of environmental mutagens; and the testing of carcinogenic potentials. The publication also examines the uncertainties related to the evaluation of the health hazards of environmental chemicals from toxicological data and epidemiological monitoring of indices of chemical hazards. The book takes a look at safety factors and their application in toxicological evaluation; ecotoxicological approaches for the protection of environment and health; and use of biological materials as environmental pollution gauges. The text also discusses acute toxicity, teratogenic effects of pollutants, and examples of ecotoxicological research. The selection is a dependable source of data for readers interested in the evaluation of toxicological data relative to the protection of public health.
Author: National Library of Medicine (U.S.)
Publisher:
ISBN:
Category : Medicine
Languages : en
Pages : 1116
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Book Description
First multi-year cumulation covers six years: 1965-70.
Author: H.E. Sutton
Publisher: Elsevier
ISBN: 0323160107
Category : Science
Languages : en
Pages : 212
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Book Description
Mutagenic Effects of Environmental Contaminants investigates the mutagenic consequences of environmental contaminants, such as pesticides, industrials, food additives, drugs, and biologicals, as well as the possible relationships between mutagenesis and carcinogenesis. It describes the monitoring of chemical mutagens in the environment and the ways that genetic mutations cause disease in humans. Organized into 14 chapters, this volume begins with an overview of the current burden of human genetic disease and the biochemical mechanisms of mutation. It then discusses practical and feasible methods that use a variety of organisms to screen potential mutagenic agents, increased mutation rates in human populations, mutagens that are currently used commercially, and the interrelationships between mutagenicity, carcinogenicity, and teratogenicity. The reader is also introduced to genetic toxicology, detection of chemically induced mutations in experimental animals, and chromosome and somatic mutations in humans. This book is a valuable resource for scientists, policymakers, and administrators of environmental programs.
Author:
Publisher:
ISBN:
Category : Environmental health
Languages : en
Pages : 388
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Book Description
Author:
Publisher:
ISBN:
Category : Carcinogenesis
Languages : en
Pages : 640
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Book Description
Author:
Publisher:
ISBN:
Category : Pesticides
Languages : en
Pages : 892
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Book Description
Author: Frederick De Serres
Publisher: Springer Science & Business Media
ISBN: 1461334098
Category : Science
Languages : en
Pages : 1113
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Book Description
Frederick J. de Serres, Ph. D. Office of the Associate Director for Genetics National Institute of Environmental Health Sciences Research Triangle Park, North Carolina (U. S. A. ) 27709 The Workshop on Comparative Chemical Mutagenesis was orga nized to begin the process of problem identification and resolution concerning our needs to evaluate the data on test chemicals arising from assays for mutagenic activity on laboratory organisms. In the past, data on chemical mutagens has been generated and published in the scientific literature on a more or less random basis. Individual chemicals enjoy a brief period of "popularity" that leads to a burst of publications in the same or sometimes related assay systems. The incompleteness of the data base, in many of these cases, makes comparative mutagenesis difficult or impossible. In our attempts to compare the genetic effects of a given chemical over a wide range of assay systems, we are often interested in making quantitative as well as qualitative compari sons. To restate the first comparison: is the chemical under ques tion a weak, moderate or potent mutagen over a wide range of assay systems--or alternatively, does the level of response vary markedly? To make the second comparison, what is needed is information on the spectrum of genetic alterations produced as well as whether this spectrum is consistent over a wide range of organisms.
