The Thymus in Immunotoxicology


Book Description

"Thymus Update 4" details the sensitivity of the thymus to xenobiotics and their effects on thymocyte development and maturation. It highlights the importance of immunological testing of all envoronmental toxins, such as dioxin, tin compounds and caramel additives, and drugs, such as immunosuppressives, antiviral agents and antihypertensive agents. The effects of trauma are also considered. Part two covers a subject of topical importance: an update on procedures for vascular transplantation of the thymus.




Biomarkers in Marine Organisms


Book Description

Many previous studies and books have been dedicated to fundamental and developmental aspects of biomarkers. The purpose of this book is to provide, through various case studies, an overview of the practical use of biological markers in marine animals to evaluate the health effects of environmental contamination in marine ecosystems. More precisely, the book presents the results obtained during the development and application of biological markers as indicators of exposure/effect to toxic chemicals in marine environments, using diverse sentinel species such as fish, bivalves and crustaceans. An important aspect is also the publication of technical annexes that describe in detail the experimental procedures developed for both chemical and biochemical measurement.




Toxicology of Organophosphate and Carbamate Compounds


Book Description

This text/reference book provides the most comprehensive coverage of anticholinesterase compounds (Organophosphates and Carbamates), which constitute the largest number of chemicals that are primarily used as insecticides in agriculture, industry, and around the home/garden. Some OPs (nerve agents) have been used in chemical warfare and terrorist attacks, while some OPs and CMs have been recommended as therapeutic agents in human medicine as well as in veterinary medicine. Many chemicals of both classes are extremely toxic and lack selectivity, thus their inadvertent/accidental use continues to pose a threat to human and animal health, aquatic systems and wildlife. These anticholinesterase agents produce a variety of toxicological effects in target and nontarget organs. In light of this complexicity, this multi-authored book is written by the well known scientists from many countries. The book is organized into nine sections, with a total of 49 chapters, to provide in-depth knowledge on various aspects of OP and CM compounds, including their use, classification, mechanism-based toxicity, and prophylactic and therapeutic measurements. Several chapters are written with special emphasis to cover timely topics, such as chemical warfare agents, physiologically-based pharmacokinetic modeling, structure and function of cholinesterases, paraoxonase, carboxylesterases; developmental neurotoxicity, the intermediate syndrome, oxidative stress, endocrine disruption, and DNA damage/gene expression and carcinogenesis. Section-VI with 5 chapters is specifically devoted to risk assessment, and safety and regulatory guidelines for pesticides. - Describes everything you need to know about Organophosphates and Carbamates - Extensively covers pesticides, nerve agents, therapeutic drugs, and flame retardants - Describes epidemiology of the world's major disasters involving Organophosphates and Carbamates - Covers animal, human, aquatic, and wildlife toxicity of Anticholinesterases - Insights into in-depth cholinergic and noncholinergic mechanisms of toxicity - Describes recent advancements in cholinesterases, paraoxonases, carboxylesterases, oxidative stress, endocrine disruption, cardiac and pulmonary toxicity, and carcinogenesis - Provides in vitro and in vivo models for neurotoxicity testing - Integrates knowledge of studies in lab animals and humans - Offers risk/safety assessment and national/international guidelines for permissible levels of pesticide residues - Describes management of Anticholinesterase poisoning in humans




Tumor Microenvironment


Book Description

Revealing essential roles of the tumor microenvironment in cancer progression, this volume focuses on non-hematopoietic cells within the tumor microenvironment.Further, it teaches readers about the roles of distinct constituents of the tumor microenvironment and how they affect cancer development. Topics include fibroblasts, adipocytes, mesenchymal stem cells, stellate cells, and more. Taken alongside its companion volumes, Tumor Microenvironment: Non-Hematopoietic Cells updates us on what we know about the different aspects of the tumor microenvironment as well as future directions. Useful for introducing the newer generation of researchers to the history of how scientists focused in the tumor microenvironment and how this knowledge is currently applied for cancer treatments, it will be essential reading for advanced cell biology and cancer biology students as well as researchers seeking an update on research in the tumor microenvironment. All of the chapter authors are renowned international experts in the cancer biology field in specific subfields that will be the focus of their chapters.




Hormonally Active Agents in the Environment


Book Description

Some investigators have hypothesized that estrogens and other hormonally active agents found in the environment might be involved in breast cancer increases and sperm count declines in humans as well as deformities and reproductive problems seen in wildlife. This book looks in detail at the science behind the ominous prospect of "estrogen mimics" threatening health and well-being, from the level of ecosystems and populations to individual people and animals. The committee identifies research needs and offers specific recommendations to decision-makers. This authoritative volume: Critically evaluates the literature on hormonally active agents in the environment and identifies known and suspected toxicologic mechanisms and effects of fish, wildlife, and humans. Examines whether and how exposure to hormonally active agents occursâ€"in diet, in pharmaceuticals, from industrial releases into the environmentâ€"and why the debate centers on estrogens. Identifies significant uncertainties, limitations of knowledge, and weaknesses in the scientific literature. The book presents a wealth of information and investigates a wide range of examples across the spectrum of life that might be related to these agents.




Encyclopedic Reference of Immunotoxicology


Book Description

This work provides rapid access to focused information on topics of Immunotoxicology not only for scientists and those dealing with laboratory aspects but also for lecturers and advanced students. Over 200 contributing authors – including many of the world’s top specialists – have contributed full essays on all relevant topics, supplemented by keyword definitions of related terms. Full essays are structured uniformly to provide reader-friendly information on all aspects of Immunotoxicology, including methods of testing and analysis, characteristics of substances, the regulatory environment and the relevance of these to humans. The single A–Z format of both types of entry makes this reference book very easy to use. The Encyclopedic Reference of Immunotoxicology is intended to be a comprehensive work of reference which will provide easy access to relevant information in the fast-growing field of Immunotoxicology.




Xenobiotics in Fish


Book Description

Aquaculture is rapidly becoming a major source of fish protein used to meet the nutritional needs of humans. As the aquaculture industry grows, exposure of farmed fish to environmental contaminants, and the need for chemical therapeutic agents for fish, will increase. This book is designed to bring together authorities worldwide on the regulation of environmental contaminants and food chemicals and researchers investigating the metabolism and disposition of foreign chemicals (xenobiotics) in fish species.




Animal Biomarkers as Pollution Indicators


Book Description

Ecotoxicology is a relatively new scientific discipline. Indeed, it might be argued that it is only during the last 5-10 years that it has come to merit being regarded as a true science, rather than a collection of procedures for protecting the environment through management and monitoring of pollutant discharges into the environment. The term 'ecotoxicology' was first coined in the late sixties by Prof. Truhaut, a toxicologist who had the vision to recognize the importance of investigating the fate and effects of chemicals in ecosystems. At that time, ecotoxicology was considered a sub-discipline of medical toxicology. Subsequently, several attempts have been made to portray ecotoxicology in a more realistic light. Notably, both F. Moriarty (1988) and F. Ramade (1987) emphasized in their books the broad basis of ecotoxicology, encompassing chemical and radiation effects on all components of ecosystems. In doing so, they and others have shifted concern from direct chemical toxicity to man, to the far more subtle effects that pollutant chemicals exert on natural biota. Such effects potentially threaten the existence of all life on Earth. Although I have identified the sixties as the era when ecotoxicology was first conceived as a coherent subject area, it is important to acknowledge that studies that would now be regarded as ecotoxicological are much older. Wherever people's ingenuity has led them to change the face of nature significantly, it has not escaped them that a number of biological con sequences, often unfavourable, ensue.




Immunotoxicity Testing


Book Description

Recent critical advances in the field of immunotoxicology have led to incredible contributions to basic science, including crucial improvements in human risk assessment. In Immunotoxicity Testing: Methods and Protocols, expert researchers explore these changes, providing the reader with current, lab-ready procedures, along with the corresponding background information that is necessary to identify effective testing approaches for chemicals and drugs. Among the first volumes to meld consideration of immunotoxicity testing strategies with a comprehensive presentation of detailed laboratory protocols, chapters include a description of the evolution of immunotoxicity testing, a look at the importance of immunotoxicity testing for health risk reduction, and ideas concerning the future of the field. Composed in the highly successful Methods in Molecular Biology(tm) series format, most chapters contain a brief introduction, step-by-step methods, a list of necessary materials, and a Notes section which shares tips from the experts on troubleshooting and avoiding known pitfalls. Comprehensive and innovative, Immunotoxicity Testing: Methods and Protocols is a critical, one-stop reference resource for the most important and commonly used laboratory protocols in immunotoxicology.




Environmental Influences on the Immune System


Book Description

This book brings together articles on the overarching theme of how the environment shapes the immune system. The immune system is commonly assumed to respond to harmful pathogens such as bacteria and viruses. However, harmless bacteria, chemicals, stress, normal food and other factors can also trigger, shape or interfere with the immune system, often producing adverse effects. Yet, it is also becoming increasingly accepted that some of these interactions are physiological and necessary for a healthy immune system. Examples of negative effects include the immunosuppressive effects of UV irradiation, or the immunotoxic effects of man-made chemicals such as polycyclic aromatic hydrocarbons. Autoimmunity or allergies can be the adverse consequences of interaction between the immune system and chemical compounds such as drugs. Positive effects can come from natural exposure levels to bacteria, healthy life-style or the diet. There is a great need to understand how communication between the environment and the immune system works. This book addresses this need. It covers environmental factors (such as bacteria, sun exposure), human factors (such as age, exercise or stress), and important man-made factors (such as air pollution). A chapter on human rights complements the scientific chapters. The book is intended for immunologists, toxicologists and researchers who want to know how the immune system works and is triggered, as well as for medical doctors in environmental medicine and the general public interested in immunology.