Download or read book Emerging Bioinformatic Tools in Toxicogenomics written by Danyel Jennen and published by Frontiers Media SA. This book was released on 2020-02-27 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Toxicogenomics was established as a merger of toxicology with genomics approaches and methodologies more than 15 years ago, and considered of major value for studying toxic mechanisms-of-action in greater depth and for classification of toxic agents for predicting adverse human health risks. While the original focus was on technological validation of in particular microarray-based whole genome expression analysis (transcriptomics), mainly through cross-comparing different platforms for data generation (MAQC-I), it was soon appreciated that actually the wide variety of data analysis approaches represents the major source of inter-study variation. This led to early attempts towards harmonizing data analysis protocols focusing on microarray-based models for predicting toxicological and clinical end-points and on different methods for GWAS data (MAQC-II). Simultaneously, further technological developments, geared by increasing insights into the complexity of cellular regulation, enabled analyzing molecular perturbations across multiple genomics scales (epigenomics and microRNAs, metabolomics). While these were initially still based on microarray technology, this is currently being phased out and replaced by a variety of next generation sequencing-based methods enabling exploration of genomic responses to toxicants at even greater depth (SEQC-I). This raises the demand for reliable and robust data analysis approaches, ranging from harmonized bioinformatics concepts for preprocessing raw data to non-supervised and supervised methods for capturing and integrating the dynamic perturbations of cell function across dose and time, and thus retrieving mechanistic insights across multiple regulation scales. Traditional toxicology focused on dose-dependently determining apical endpoints of toxicity. With the advent of toxicogenomics, efforts towards better understanding underlying molecular mechanisms has led to the development of the concept of Adverse Outcome Pathways, which are basically presented as a structural network of linearly related gene-gene interactions regulating key events for inducing apical toxic endpoints of interest. Impulse challenges from exposure of biological systems to toxic agents will however induce a cascade-type of events, presenting both adverse and adaptive processes, thus requiring bioinformatics approaches and methods for complex dynamic data, generated not only across dose, but clearly also across time. Currently, time-resolved toxicogenomics data sets are increasingly being assembled in the course of large-scaled research projects, for instance devoted towards developing toxicogenomics-based predictive assays for evaluating chemical safety which are no longer animal-based.
Download or read book Toxicogenomics written by Hisham K. Hamadeh and published by John Wiley & Sons. This book was released on 2004-09-06 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Toxicogenomics: Principles and Applications fills the need for a single, thorough text on the key breakthrough technologies in genomics, proteomics, metabolomics, and bioinformatics, and their applications to toxicology research. The first section following a general introduction is on genomics and toxicogenomics, and qPCR. The next sections are toxicoproteomics and metabolomics. The final section covers bioinformatics aspects, from databases to data integration strategies. A practical resource for specialists and non-specialists alike, this book includes numerous illustrations that support the textual explanations. It offers practical guidance to investigators wishing to pursue this line of research, and lists key relevant software and Internet resources.
Download or read book Applications of Toxicogenomic Technologies to Predictive Toxicology and Risk Assessment written by National Research Council and published by National Academies Press. This book was released on 2007-11-19 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: The new field of toxicogenomics presents a potentially powerful set of tools to better understand the health effects of exposures to toxicants in the environment. At the request of the National Institute of Environmental Health Sciences, the National Research Council assembled a committee to identify the benefits of toxicogenomics, the challenges to achieving them, and potential approaches to overcoming such challenges. The report concludes that realizing the potential of toxicogenomics to improve public health decisions will require a concerted effort to generate data, make use of existing data, and study data in new waysâ€"an effort requiring funding, interagency coordination, and data management strategies.
Download or read book Validation of Toxicogenomic Technologies written by National Research Council and published by National Academies Press. This book was released on 2007-04-28 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Beginning in the early 1980s, new technologies, began to permit evaluation of the expression of individual genes. Recent technological advances have expanded those evaluations to permit the simultaneous detection of the expression of tens of thousands of genes and to support holistic evaluations of the entire genome. The application of these technologies has enabled researchers to unravel complexities of cell biology and, in conjunction with toxicologic evaluations, the technologies are used to probe and gain insight into questions of toxicologic relevance. As a result, the use of the technologies has become increasingly important for scientists in academia, as well as for the regulatory and drug development process.
Download or read book Application of Toxicogenomics to Cross Species Extrapolation written by National Research Council and published by National Academies Press. This book was released on 2006-05-24 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: Some of what we know about the health effects of exposure to chemicals from food, drugs, and the environment come from studies of occupational, inadvertent, or accident-related exposures. When there is not enough human data, scientists rely on animal data to assess risk from chemical exposure and make health and safety decisions. However, humans and animals can respond differently to chemicals, including the types of adverse effects experienced and the dosages at which they occur. Scientists in the field of toxicogenomics are using new technologies to study the effects of chemicals. For example, in response to a particular chemical exposure, they can study gene expression ("transcriptomics"), proteins ("proteomics") and metabolites ("metabolomics"), and they can also look at how individual and species differences in the underlying DNA sequence itself can result in different responses to the environment. Based on a workshop held in August 2004, this report explores how toxicogenomics could enhance scientists' ability to make connections between data from experimental animal studies and human health.
Download or read book Handbook of Toxicogenomics written by Jürgen Borlak and published by John Wiley & Sons. This book was released on 2006-03-06 with total page 705 pages. Available in PDF, EPUB and Kindle. Book excerpt: Toxicogenomics is a new, dynamic and very promising field that can help optimize toxicity analyses and streamline research into active substances. It is of interest not only for basic research and development, but also from a legal and ethical perspective. Here, experts from all the fields mentioned will find solid information provided by an international team of experienced authors. With its approach as an interdisciplinary overview, it will prove particularly useful for all those needing to develop appropriate research strategies. The authors work for major research institutions, such as the Fraunhofer Institute of Toxicology and Experimental Medicine (Germany), the German Cancer Research Center, the National Institute of Environmental Health Science (USA), the National Institute of Health Science (Japan) or for companies like Affymetrix, Altana Pharma, Bayer, Boehringer Ingelheim, Bruker, Merck, Nimblegen, Novartis, and Syngenta. Coverage ranges from the technology platforms applied, including DNA arrays or proteomics, via the bioinformatics tools required, right up to applications of toxicogenomics presented in numerous case studies, while also including an overview of national programs and initiatives as well as regulatory perspectives. Walter Rosenthal, Director of the Research Institute for Molecular Pharmacology in Berlin, praises the book thus: "I would like to congratulate the publishers of this handbook, one that deals with a extremely hot topic. They have succeeded in gaining as authors leading representatives from this field. The Handbook impressively shows how modern genomic research is leading to rapid advances and new insights within toxicology."
Download or read book Unsupervised Data Mining Applications on High Dimensional Gene Expression Time Series in Toxicogenomics written by Ce Gao and published by . This book was released on 2015 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Toxicogenomics, the study of adverse effects caused by toxicants to human health and environment via high-throughput genomics technologies, present promising alternatives to expensive and lengthy animal-based approaches in toxicity testing and risk assessment. Advances in toxicogenomics techniques now enable monitoring cellular activities continuously, under a large range of experimental and biological conditions and providing comprehensive and high-resolution information at molecular levels. The research interests in toxicogenomics center on key issues involving the quantification of molecular toxic effects, the linkage between molecular endpoints and phenotypic ones, the discernment of dose-response and pharmacokinetics relationships, as well as the integration of bioinformatics into predictive toxicology. In particular, the increasingly complex and voluminous toxicogenomics data pose great analytical challenges. The existing bioinformatics tools are incompatible with the high dimensionality and temporal dynamics of the data, possibly leading to unreliable and misinterpretation of the potential toxicity connotation. The objectives of this dissertation are to develop and demonstrate new or improved methodology that better address the challenges and limitations in high dimensional time series toxicogenomics data analysis for critical bioinformatics application such as toxicity mechanism identification, toxicants classification, and for predictive toxicology knowledge discovery. In this study, we develop new or improve bioinformatics data analysis algorithms so that they are capable of processing high dimensional time series toxicogenomics data, therefore better capture and reflect the dynamics of cellular response to toxicants. We also prove the potential and validity of the incorporation of various molecular disturbance/effect quantifiers into various functional toxicogenomics bioinformatics to provide quantitative insights into the toxicant-induced cellular molecular responses at individual gene, specific pathway and system levels. In addition, we demonstrate the effectives of unsupervised bioinformatics tools for mining new, more in depth, much-detailed and fundamental knowledge and understanding of toxicological information at molecular level. This research could generate new information to fill in the urgent knowledge gaps in toxicogenomics that present barriers to the realization of predictive toxicology and make contributions to several fields including toxicology, bioinformatics and environmental science.
Download or read book Toxicogenomic Technologies and Risk Assessment of Environmental Carcinogens written by National Research Council and published by National Academies Press. This book was released on 2005-11-17 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Toxicogenomics is a discipline that combines expertise in toxicology, genetics, molecular biology, and environmental health to help understand the response of living organisms to stressful environments. The National Research Council convened a workshop to discuss how toxicogenomic data could be applied to improve risk assessments, particularly cancer risk from environmental exposure to chemicals. Risk assessments serve as the basis of many public-health decisions in environmental, occupational, and consumer protection from chemicals. The workshop provided a forum for communities of experts, including those working in "-omics" and those in the policy arena, to discuss where their fields intersect, and how toxicogenomics could address critical knowledge gaps in risk assessments.
Download or read book Handbook of Toxicogenomics written by Jurgen Borlak and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Toxicogenomics is a new, dynamic and very promising field that can help optimize toxicity analyses and streamline research into active substances. It is of interest not only for basic research and development, but also from a legal and ethical perspective. Here, experts from all the fields mentioned will find solid information provided by an international team of experienced authors. With its approach as an interdisciplinary overview, it will prove particularly useful for all those needing to develop appropriate research strategies. The authors work for major research institutions, such as the Fraunhofer Institute of Toxicology and Experimental Medicine (Germany), the German Cancer Research Center, the National Institute of Environmental Health Science (USA), the National Institute of Health Science (Japan) or for companies like Affymetrix, Altana Pharma, Bayer, Boehringer Ingelheim, Bruker, Merck, Nimblegen, Novartis, and Syngenta. Coverage ranges from the technology platforms applied, including DNA arrays or proteomics, via the bioinformatics tools required, right up to applications of toxicogenomics presented in numerous case studies, while also including an overview of national programs and initiatives as well as regulatory perspectives. Walter Rosenthal, Director of the Research Institute for Molecular Pharmacology in Berlin, praises the book thus: "I would like to congratulate the publishers of this handbook, one that deals with a extremely hot topic. They have succeeded in gaining as authors leading representatives from this field. The Handbook impressively shows how modern genomic research is leading to rapid advances and new insights within toxicology."
Download or read book Toxicogenomics written by Tohru Inoue and published by Springer. This book was released on 2013-01-02 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: The meteoric rate at which the human genome is being sequenced has presented to the research community a vast array of newly discovered genes, which in tum has catalyzed an even more dramatic effort to decipher this voluminous data set into understanding how genes function both individually and in complex pathways that regulate the biochemistry of life. A compendium of gene expression data, enhanced by complete proteomic analysis, will enable investigators to probe into the complexities of the mechanisms of normal genetic and metabolic pathways and, subsequently, how disease occurs when they malfunction. The new science of toxicogenomics combines genomic, proteomic, and informatics technologies, and biological research can now foresee a time when there will be a full comprehension of the complex dynamic mechanisms of genetics, biochemistry, and physiology. The inherent power of toxicogenomics derives from an amalgamation of multiple scientific disciplines that were originally drawn together to facilitate sequencing the three billion bases that comprise the human genome. Traditionally, the science of toxicology has been founded upon empirical codification of dose-related effects. It has evolved to studies that are directed towards understanding the mechanisms by which individual agents cause their effects in humans. Due to technical limitations, this process has been relatively slow, since it has accomplished one chemical or one effect at a time.
Download or read book Encyclopedia of Cancer written by Manfred Schwab and published by Springer Science & Business Media. This book was released on 2008-09-23 with total page 3307 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive encyclopedic reference provides rapid access to focused information on topics of cancer research for clinicians, research scientists and advanced students. Given the overwhelming success of the first edition, which appeared in 2001, and fast development in the different fields of cancer research, it has been decided to publish a second fully revised and expanded edition. With an A-Z format of over 7,000 entries, more than 1,000 contributing authors provide a complete reference to cancer. The merging of different basic and clinical scientific disciplines towards the common goal of fighting cancer makes such a comprehensive reference source all the more timely.
Download or read book OMICS written by Debmalya Barh and published by CRC Press. This book was released on 2013-03-26 with total page 721 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the advent of new technologies and acquired knowledge, the number of fields in omics and their applications in diverse areas are rapidly increasing in the postgenomics era. Such emerging fields—including pharmacogenomics, toxicogenomics, regulomics, spliceomics, metagenomics, and environomics—present budding solutions to combat global challenges in biomedicine, agriculture, and the environment. OMICS: Applications in Biomedical, Agricultural, and Environmental Sciences provides valuable insights into the applications of modern omics technologies to real-world problems in the life sciences. Filling a gap in the literature, it offers a broad, multidisciplinary view of current and emerging applications of omics in a single volume. Written by highly experienced active researchers, each chapter describes a particular area of omics and the associated technologies and applications. Topics covered include: Proteomics, epigenomics, and pharmacogenomics Toxicogenomics and the assessment of environmental pollutants Applications of plant metabolomics Nutrigenomics and its therapeutic applications Microalgal omics and omics approaches in biofuel production Next-generation sequencing and omics technology for transgenic plant analysis Omics approaches in crop improvement Engineering dark-operative chlorophyll synthesis Computational regulomics Omics techniques for the analysis of RNA splicing New fields, including metagenomics, glycomics, and miRNA Breast cancer biomarkers for early detection Environomics strategies for environmental sustainability This timely book explores a wide range of omics application areas in the biomedical, agricultural, and environmental sciences. Throughout, it highlights working solutions as well as open problems and future challenges. Demonstrating the diversity of omics, it introduces readers to state-of-the-art developments and trends in omics-driven research.
Download or read book Applications of Toxicogenomic Technologies to Predictive Toxicology and Risk Assessment written by National Research Council and published by National Academies Press. This book was released on 2007-12-19 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: The new field of toxicogenomics presents a potentially powerful set of tools to better understand the health effects of exposures to toxicants in the environment. At the request of the National Institute of Environmental Health Sciences, the National Research Council assembled a committee to identify the benefits of toxicogenomics, the challenges to achieving them, and potential approaches to overcoming such challenges. The report concludes that realizing the potential of toxicogenomics to improve public health decisions will require a concerted effort to generate data, make use of existing data, and study data in new waysâ€"an effort requiring funding, interagency coordination, and data management strategies.
Download or read book Regulatory Toxicology written by Franz-Xaver Reichl and published by Springer. This book was released on 2014-03-27 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book will be written by experts for professionals, scientists and all those involved in toxicological data generation and decision-making. It is the updated and expanded version of a monograph published in German in 2004. Chemical safety is regulated on various levels including production, storage, transport, handling, disposal or labelling. This book deals comprehensively with the safety-ensuring methods and concepts employed by regulatory agencies, industry and academics. Toxicologists use experimental and scientific approaches for data collection, e.g. about chemical hazards, physicochemical features or toxicokinetics. The respective experimental methods are described in the book. Toxicologists also deal with much insecurity in the exposure and effect scenarios during risk assessment. To overcome these, they have different extrapolation methods and estimation procedures at their disposal. The book describes these methods in an accessible manner. Differing concepts from one regulation area to another are also covered. Reasons and consequences become evident when reading the book. Altogether, the book Regulatory Toxicology will serve as an excellent reference.
Download or read book Information Resources in Toxicology Volume 1 Background Resources and Tools written by Steve Gilbert and published by Academic Press. This book was released on 2020-05-16 with total page 1055 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new fifth edition of Information Resources in Toxicology offers a consolidated entry portal for the study, research, and practice of toxicology. Both volumes represents a unique, wide-ranging, curated, international, annotated bibliography, and directory of major resources in toxicology and allied fields such as environmental and occupational health, chemical safety, and risk assessment. The editors and authors are among the leaders of the profession sharing their cumulative wisdom in toxicology’s subdisciplines. This edition keeps pace with the digital world in directing and linking readers to relevant websites and other online tools. Due to the increasing size of the hardcopy publication, the current edition has been divided into two volumes to make it easier to handle and consult. Volume 1: Background, Resources, and Tools, arranged in 5 parts, begins with chapters on the science of toxicology, its history, and informatics framework in Part 1. Part 2 continues with chapters organized by more specific subject such as cancer, clinical toxicology, genetic toxicology, etc. The categorization of chapters by resource format, for example, journals and newsletters, technical reports, organizations constitutes Part 3. Part 4 further considers toxicology’s presence via the Internet, databases, and software tools. Among the miscellaneous topics in the concluding Part 5 are laws and regulations, professional education, grants and funding, and patents. Volume 2: The Global Arena offers contributed chapters focusing on the toxicology contributions of over 40 countries, followed by a glossary of toxicological terms and an appendix of popular quotations related to the field. The book, offered in both print and electronic formats, is carefully structured, indexed, and cross-referenced to enable users to easily find answers to their questions or serendipitously locate useful knowledge they were not originally aware they needed. Among the many timely topics receiving increased emphasis are disaster preparedness, nanotechnology, -omics, risk assessment, societal implications such as ethics and the precautionary principle, climate change, and children’s environmental health. Introductory chapters provide a backdrop to the science of toxicology, its history, the origin and status of toxicoinformatics, and starting points for identifying resources Offers an extensive array of chapters organized by subject, each highlighting resources such as journals, databases,organizations, and review articles Includes chapters with an emphasis on format such as government reports, general interest publications, blogs, and audiovisuals Explores recent internet trends, web-based databases, and software tools in a section on the online environment Concludes with a miscellany of special topics such as laws and regulations, chemical hazard communication resources, careers and professional education, K-12 resources, funding, poison control centers, and patents Paired with Volume Two, which focuses on global resources, this set offers the most comprehensive compendium of print, digital, and organizational resources in the toxicological sciences with over 120 chapters contributions by experts and leaders in the field
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 Bisphenol A written by Pinar Erkekoglu and published by BoD – Books on Demand. This book was released on 2017-06-07 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bisphenol A (BPA) is a synthetic compound for hardening and clearing polycarbonate plastics. BPA is mainly classified as an estrogen-like endocrine-disrupting chemical. In the last decade, attention has arisen in scientific communities that it is not safe to use this chemical in mainly polycarbonate plastics. Exposure to BPA starts in prenatal period, which is the critical period for its toxic effects on different organs. Throughout this book, the readers will obtain information on the effects of BPA on different systems. They will also get information on the prenatal and postnatal effects of BPA. We believe that readers will get qualified scientific knowledge and a general overview of the toxic effects of BPA exposure and its consequences from this book.
