Download or read book Test No 476 In Vitro Mammalian Cell Gene Mutation Tests using the Hprt and xprt genes written by OECD and published by OECD Publishing. This book was released on 2015-07-28 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The in vitro mammalian cell gene mutation test can be used to detect gene mutations induced by chemical substances. In this test, the used genetic endpoints measure mutation at hypoxanthine-guanine phosphoribosyl transferase (HPRT), and at a transgene of xanthineguanine phosphoribosyl ...
Download or read book Test No 476 In Vitro Mammalian Cell Gene Mutation Tests Using the Hprt and Xprt Genes written by Organisation de coopération et de développement économiques and published by . This book was released on 2015 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The in vitro mammalian cell gene mutation test can be used to detect gene mutations induced by chemical substances. In this test, the used genetic endpoints measure mutation at hypoxanthine-guanine phosphoribosyl transferase (HPRT), and at a transgene of xanthineguanine phosphoribosyl transferase (XPRT). The HPRT and XPRT mutation tests detect different spectra of genetic events. Cells in suspension or monolayer culture are exposed to, at least four analysable concentrations of the test substance, both with and without metabolic activation, for a suitable period of time. They are subcultured to determine cytotoxicity and to allow phenotypic expression prior to mutant selection. Cytotoxicity is usually determined by measuring the relative cloning efficiency (survival) or relative total growth of the cultures after the treatment period. The treated cultures are maintained in growth medium for a sufficient period of time, characteristic of each selected locus and cell type, to allow near-optimal phenotypic expression of induced mutations. Mutant frequency is determined by seeding known numbers of cells in medium containing the selective agent to detect mutant cells, and in medium without selective agent to determine the cloning efficiency (viability). After a suitable incubation time, colonies are counted.
Download or read book OECD Guidelines for the Testing of Chemicals Section 4 Test No 476 In Vitro Mammalian Cell Gene Mutation Tests using the Hprt and xprt genes written by OECD and published by OECD Publishing. This book was released on 2016-07-29 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The in vitro mammalian cell gene mutation test can be used to detect gene mutations induced by chemical substances. In this test, the used genetic endpoints measure mutation at hypoxanthine-guanine phosphoribosyl transferase (HPRT), and at a transgene of xanthineguanine phosphoribosyl transferase...
Download or read book Test No 476 In vitro Mammalian Cell Gene Mutation Test written by OECD and published by OECD Publishing. This book was released on 1997-07-21 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The in vitro mammalian cell gene mutation test can be used to detect gene mutations induced by chemical substances. In the cell lines the most commonly-used genetic endpoints measure mutation at thymidine kinase (TK) and hypoxanthine-guanine ...
Download or read book Test No 490 In Vitro Mammalian Cell Gene Mutation Tests Using the Thymidine Kinase Gene written by Organisation de coopération et de développement économiques and published by . This book was released on 2015 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: The in vitro mammalian cell gene mutation test can be used to detect gene mutations induced by chemical substances. This TG includes two distinct in vitro mammalian gene mutation assays requiring two specific tk heterozygous cells lines: L5178Y tk+/-3.7.2C cells for the mouse lymphoma assay (MLA) and TK6 tk+/- cells for the TK6 assay. Genetic events detected using the tk locus include both gene mutations and chromosomal events. Cells in suspension or monolayer culture are exposed to, at least four analysable concentrations of the test substance, both with and without metabolic activation, for a suitable period of time. They are subcultured to determine cytotoxicity and to allow phenotypic expression prior to mutant selection. Cytotoxicity is usually determined by measuring the relative cloning efficiency (survival) or relative total growth of the cultures after the treatment period. The treated cultures are maintained in growth medium for a sufficient period of time, characteristic of each selected locus and cell type, to allow near-optimal phenotypic expression of induced mutations. Mutant frequency is determined by seeding known numbers of cells in medium containing the selective agent to detect mutant cells, and in medium without selective agent to determine the cloning efficiency (viability). After a suitable incubation time, colonies are counted.
Download or read book Haschek and Rousseaux s Handbook of Toxicologic Pathology Volume 1 Principles and Practice of Toxicologic Pathology written by Wanda M. Haschek-Hock and published by Academic Press. This book was released on 2021-10-20 with total page 1154 pages. Available in PDF, EPUB and Kindle. Book excerpt: Haschek and Rousseaux's Handbook of Toxicologic Pathology, recognized by many as the most authoritative single source of information in the field of toxicologic pathology, has been extensively updated to continue its comprehensive and timely coverage. The fourth edition has been expanded to four separate volumes due to an explosion of information in this field requiring new and updated chapters. Completely revised with a number of new chapters, Volume 1, "Principles and the Practice of Toxicologic Pathology," covers the practice of toxicologic pathology in three parts: Principles of Toxicologic Pathology, Methods in Toxicologic Pathology, and the Practice of Toxicologic Pathology. Other volumes in this work round out the depth and breadth of coverage.Volume 2 encompasses "Toxicologic Pathology in Safety Assessment" and "Environmental Toxicologic Pathology". These two sections cover the application of toxicologic pathology in developing specific product classes, principles of data interpretation for safety assessment, and toxicologic pathology of major classes of environmental toxicants. Volumes 3 and 4 provide deep and broad treatment of "Target Organ Toxicity", emphasizing the comparative and correlative aspects of normal biology and toxicant-induced dysfunction, principal methods for toxicologic pathology evaluation, and major mechanisms of toxicity. These volumes comprise the most authoritative reference on toxicologic pathology for pathologists, toxicologists, research scientists, and regulators studying and making decisions on drugs, biologics, medical devices, and other chemicals, including agrochemicals and environmental contaminants. Each volume is being published separately. Provides new chapters on digital pathology, juvenile pathology, in vitro/in vivo correlation, big data technologies and in-depth discussion of timely topics in the area of toxicologic pathology Offers high-quality and trusted content in a multi-contributed work written by leading international authorities in all areas of toxicologic pathology Features hundreds of full-color images in both the print and electronic versions of the book to highlight difficult concepts with clear illustrations
Download or read book Introduction to Toxicological Screening Methods and Good Laboratory Practice written by Saravana Babu Chidambaram and published by Springer Nature. This book was released on 2022-02-11 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the principles, methods, and interpretation involved in establishing the safety, risk, and hazard assessment of small molecules. It presents the regulatory requirements for risk and hazard identification as per the guidelines of the Organization for Economic Cooperation and Development (OECD), Paris, and the International Council for Harmonisation (ICH) of Technical Requirements for Pharmaceuticals for Human Use ICH and Schedule ‘Y’, India. It serves as reference material for undergraduate and postgraduate pharmacy degree students as well as senior researchers to learn about the principles, methods, and interpretations of systemic dosage (acute and repeated dose) and genotoxicity (in vitro and in vivo), special toxicological investigations such as reproductive and developmental toxicology, carcinogenicity, and toxicokinetics using animal models or in vitro methods, as applicable. This book is the first of its kind in providing information on the principles and methods of implementation of Good Laboratory Practice based on the guidelines of OECD. It includes detailed chapters about the regulatory requirements and guidelines in pharmaceutical products and agrochemicals. It also describes the infrastructure needed for preclinical studies, including in vivo and in vitro facilities.
Download or read book OECD Series on Testing and Assessment Overview on genetic toxicology TGs written by OECD and published by OECD Publishing. This book was released on 2017-04-13 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Following a general update of the Genetic Toxicology TGs in 2015, the present Document was written to provide succinct and useful information to individuals unfamiliar with genetic toxicology testing, as well as experienced individuals wishing to obtain an overview of the recent changes that ...
Download or read book A Practical Guide to Toxicology and Human Health Risk Assessment written by Laura Robinson and published by John Wiley & Sons. This book was released on 2018-11-05 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: Toxicology – the study of the adverse effects of chemicals on living organisms is the cornerstone to all aspects of chemical safety and knowledge of the subject is needed in a wide spectrum of fields from the chemical industry to medicine, emergency services, forensics, and regulatory science. Toxicology involves the study of symptoms, mechanisms, treatments and detection of poisoning ... especially the poisoning of people. The many problems arising from a poor understanding of toxicology and its applications in hazard communication and chemical safety motivated the author's training courses and webinars, leading to this valuable book. Providing a practical and accessible guide, A Practical Guide to Toxicology and Human Health Risk Assessment enables readers to quickly build up knowledge and understanding of toxicology and its use in hazard identification, which is a fundamental part of chemical risk assessment. The book also covers current toxicological testing strategies and the use of physicochemical test data in hazard identification and exposure assessment. Examples are provided throughout the book to highlight important issues along with a summary of the key points that have been covered in each of the respective chapters. The book concludes with a listing of online resources on toxicology and risk assessment.
Download or read book 360 Degree Waste Management Volume 2 written by Nishikant A. Raut and published by Elsevier. This book was released on 2023-07-01 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: 360 Degree Waste Management, Volume Two: Biomedical, Pharmaceutical, and Industrial Waste and Remediation presents an interdisciplinary approach to understanding various types of biomedical, pharmaceutical, and industrial waste, including their origin, management, recycling, disposal, effects on ecosystems, and social and economic impacts. By applying the concepts of sustainable, affordable and integrated approaches for the improvement of waste management, the book confronts social, economic and environmental challenges. Thus, researchers, waste managers and environmental engineers will find critical information to identify long-term answers to problems of waste management that require complex understanding and analysis.Presenting key concepts in the management of biomedical and industrial waste, Volume Two of this two volume series includes aspects on microbiology of waste management, advanced treatment processes, environmental impacts, technological developments, economics of waste management and future implications. Provides a critical assessment of economic, social and environmental challenges due to solid wastes, highlighting sustainable management approach Describes various factors to be considered while developing waste management strategies, including techniques for reuse, reduce, recycle or recovery of solid waste and management of other wastes, such as wastes from pharmaceuticals, aluminum industry, heavy metal, and other metallurgical waste Addresses contemporary issues such as the transformation of waste into value-added products Presents an interdisciplinary approach to the management of various types of biomedical, pharmaceutical and industrial waste
Download or read book Chemical Testing Using New Approach Methodologies NAMs written by Amy J. Clippinger and published by Frontiers Media SA. This book was released on 2022-12-16 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Big Data in Predictive Toxicology written by Daniel Neagu and published by Royal Society of Chemistry. This book was released on 2019-12-04 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rate at which toxicological data is generated is continually becoming more rapid and the volume of data generated is growing dramatically. This is due in part to advances in software solutions and cheminformatics approaches which increase the availability of open data from chemical, biological and toxicological and high throughput screening resources. However, the amplified pace and capacity of data generation achieved by these novel techniques presents challenges for organising and analysing data output. Big Data in Predictive Toxicology discusses these challenges as well as the opportunities of new techniques encountered in data science. It addresses the nature of toxicological big data, their storage, analysis and interpretation. It also details how these data can be applied in toxicity prediction, modelling and risk assessment. This title is of particular relevance to researchers and postgraduates working and studying in the fields of computational methods, applied and physical chemistry, cheminformatics, biological sciences, predictive toxicology and safety and hazard assessment.
Download or read book The History of Alternative Test Methods in Toxicology written by and published by Academic Press. This book was released on 2018-10-20 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: The History of Alternative Test Methods in Toxicology uses a chronological approach to demonstrate how the use of alternative methods has evolved from their conception as adjuncts to traditional animal toxicity tests to replacements for them. This volume in the History of Toxicology and Environmental Health series explores the history of alternative test development, validation, and use, with an emphasis on humanity and good science, in line with the Three Rs (Replacement,Reduction, Refinement) concept expounded by William Russell and Rex Burch in 1959 in their now classic volume, The Principles of Humane Experimental Technique. The book describes the historical development of technologies that have influenced the application of alternatives in toxicology and safety testing. These range from single cell monocultures to sophisticated, miniaturised and microfluidic organism-on-a-chip devices, and also include molecular modelling, chemoinformatics and QSAR analysis, and the use of stem cells, tissue engineering and hollow fibre bioreactors. This has been facilitated by the wider availability of human tissues, advances in tissue culture, analytical and diagnostic methods, increases in computational processing, capabilities, and a greater understanding of cell biology and molecular mechanisms of toxicity. These technological developments have enhanced the range and information content of the toxicity endpoints detected, and therefore the relevance of test systems and data interpretation, while new techniques for non-invasive diagnostic imaging and high resolution detection methods have permitted an increased role for human studies. Several key examples of how these technologies are being harnessed to meet 21st century safety assessment challenges are provided, including their deployment in integrated testing schemes in conjunction with kinetic modelling, and in specialized areas, such as inhalation toxicity studies. The History of Alternative Test Methods in Toxicology uses a chronological approach to demonstrate how the use of alternative methods has evolved from their conception as adjuncts to traditional animal toxicity tests to replacements for them. This volume in the History of Toxicology and Environmental Health series explores the history of alternative test development, validation, and use, with an emphasis on humanity and good science, in line with the Three Rs (Replacement, Reduction, Refinement) concept expounded by William Russell and Rex Burch in 1959 in their now-classic volume, The Principles of Humane Experimental Technique. The book describes the historical development of technologies that have influenced the application of alternatives in toxicology and safety testing. These range from single cell monocultures to sophisticated miniaturised and microfluidic organism-on-a-chip devices, and also include molecular modelling, chemoinformatics and QSAR analysis, and the use of stem cells, tissue engineering and hollow fibre bioreactors. This has been facilitated by the wider availability of human tissues, advances in tissue culture, analytical and diagnostic methods, increases in computational processing capabilities, and a greater understanding of cell biology and molecular mechanisms of toxicity. These technological developments have enhanced the range and information content of the toxicity endpoints detected, and therefore the relevance of test systems and data interpretation, while new techniques for non-invasive diagnostic imaging and high resolution detection methods have permitted an increased role for human studies. Several key examples of how these technologies are being harnessed to meet 21st century safety assessment challenges are provided, including their deployment in integrated testing schemes in conjunction with kinetic modelling, and in specialised areas, such as inhalation toxicity studies.
Download or read book Live Cell Assays written by Christophe Furger and published by John Wiley & Sons. This book was released on 2016-07-14 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cell assays include all methods of measurements on living cells. Confined for a long time to research laboratories, these emerging methods have, in recent years, found industrial applications that are increasingly varied and, from now on, regulatory. Based on the recent explosion of knowledge in cell biology, the measurement of living cells represents a new class of industry-oriented research tests, the applications of which continue to multiply (pharmaceuticals, cosmetics, environment, etc.). Cellular tests are now being positioned as new tools at the interface between chemical methods, which are often obsolete and not very informative, and methods using animal models, which are expensive, do not fit with human data and are widely discussed from an ethical perspective. Finally, the development of cell assays is currently being strengthened by their being put into regulatory application, particularly in Europe through the REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) and cosmetic directives.
Download or read book Federal Register written by and published by . This book was released on 1997-08-12 with total page 936 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Download or read book Animal Models in Research written by Harikrishnan Vijayakumar Sreelatha and published by Springer Nature. This book was released on with total page 645 pages. Available in PDF, EPUB and Kindle. Book excerpt:
