Organophosphates


Book Description

This volume pulls together a wealth of up-to-date information on the toxicology of this diverse and ubiquitous class of insecticides. Leading experts review the reactivity of organophosphorus compounds with cholinesterase, as well as their metabolism and biological effects on humans and other nontarget organisms. The book not only covers the anticholinesterase actions of organophosphates, but also other, presumably independent, effects, such as teratogenicity, delayed neuropathy, immunotoxicity, and behavioral toxicity. Offers crucial overviews of chemical and biochemical reactivity and biological responsiveness of mainly nontarget organisms Reviews new developments in assessment of metabolism and disposition of organophosphorus compounds Examines organophosphorus compound-induced toxicity mediated by mechanisms other than inhibition of acetylcholinesterase Covers new research on differences in toxicity induced by the variety of organophosphorus Analyzes current controversies on the relevance of certain biochemical parameters in actual organophosphate toxicity in vivo




Organophosphates Chemistry, Fate, and Effects


Book Description

This volume pulls together a wealth of up-to-date information on the toxicology of this diverse and ubiquitous class of insecticides. Leading experts review the reactivity of organophosphorus compounds with cholinesterase, as well as their metabolism and biological effects on humans and other nontarget organisms. The book not only covers the anticholinesterase actions of organophosphates, but also other, presumably independent, effects, such as teratogenicity, delayed neuropathy, immunotoxicity, and behavioral toxicity. - Offers crucial overviews of chemical and biochemical reactivity and biological responsiveness of mainly nontarget organisms - Reviews new developments in assessment of metabolism and disposition of organophosphorus compounds - Examines organophosphorus compound-induced toxicity mediated by mechanisms other than inhibition of acetylcholinesterase - Covers new research on differences in toxicity induced by the variety of organophosphorus - Analyzes current controversies on the relevance of certain biochemical parameters in actual organophosphate toxicity in vivo




Ecological Risk Assessment for Chlorpyrifos in Terrestrial and Aquatic Systems in the United States


Book Description

Reviews of Environmental Contamination and Toxicology attempts to provide concise, critical reviews of timely advances, philosophy and significant areas of accomplished or needed endeavor in the total field of xenobiotics, in any segment of the environment, as well as toxicological implications.




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




Organophosphates


Book Description

Organophosphates are widely used nowadays. They have applications as pesticides, drugs, plasticizers, flame retardants or chemical warfare agents. Their acute toxicity is ascribed to the inhibition of acetylcholinesterase, a key enzyme in the transmission of nerve impulses in animals. Their toxic effects are manifested by the accumulation of acetylcholine and can lead to paralysis or death. Organophosphates also inhibit the other enzymes playing important roles in various biochemical processes. Organophosphate poisoning therapy is based on the application of specific antidotes as well as non-specific and symptomatic procedures. In this contribution, the authors overview the organophosphates' impact on human health and the environment, their various applications, acute exposure and possible treatments. In Volume 1, special attention was given to the connection of organophosphate exposure to cancer, synaptic vulnerability and depression development. The current state of knowledge and the future perspectives regarding their use, regulations, fate in the environment, biomonitoring, routes of exposure and legislation are reviewed. The detection and remediation of organophosphates in the environment using ionic liquids, electrochemical oxidation, carbon materials and metal-organic frameworks are discussed in more detail. The applications of organophosphates as acaricides and flame retardants are also reviewed.




Pesticide Profiles


Book Description

Pesticide Profiles: Toxicity, Environmental Impact, and Fate is like three books in one-it is a profile containing specific information about 137 pesticides, a primer of environmental toxicology, and an extensive trade name index. Profiles of each pesticide contain regulatory information, toxicity assessments, environmental fate data, physical properties, and acceptable exposure limit values. What these values and data mean in terms of human toxicity is clearly interpreted as well. The book also describes the meaning of carcinogenicity and how it is assessed in non-technical terms the non-expert can understand. Readers with a technical background are provided with the data to make their own judgments. In addition to information about specific pesticides, there are sections on general classes of pesticides, such as organophosphates. This information allows readers to make inferences about any pesticide in a class, even if a profile is not provided. Pesticide Profiles: Toxicity, Environmental Impact, and Fate goes beyond the usual listings of toxicity values or environmental half-lives to offer a broad understanding to readers of various backgrounds and interests.




Gulf War and Health


Book Description

The Gulf War in 1990-1991 was considered a brief and successful military operation, with few injuries or deaths of US troops. The war began in August 1990, and the last US ground troops returned home by June 1991. Although most Gulf War veterans resumed their normal activities, many soon began reporting a variety of nonexplained health problems that they attributed to their participation in the Gulf War, including chronic fatigue, muscle and joint pain, loss of concentration, forgetfulness, headache, and rash. Because of concerns about the veterans' health problems, the Department of Veterans Affairs (VA) requested that the Institute of Medicine (IOM) review the scientific and medical literature on the long-term adverse health effects of agents to which the Gulf War veterans may have been exposed. This report is a broad overview of the toxicology of sarin and cyclosarin. It assesses the biologic plausibility with respect to the compounds in question and health effects.




Ecotoxicology


Book Description

Ecotoxicology, Third Edition discusses the ecological effects of pollutants: the ways in which ecosystems can be affected, and current attempts to predict and monitor such effects. The emphasis is on ecosystems; therefore toxicological approaches are critically assessed. Following a brief introduction to the principal characteristics of both pollutants and ecosystems, the various ecosystem components are considered in more detail. Populations, communities and gene pools are examined with an emphasis on the ways in which pollutants affect them specifically. The indirect effects of pollution are considered separately in a new chapter with particular attention paid to the mechanisms and biological effects of global warming. A discussion of the methods used to predict and to monitor the effects of pollutants, some illustrative examples of pollution problems and a final summary discussion, complete the book. A classic proven by its second edition Still the only book to properly integrate ecological principles with chemistry/biochemistry Focuses on the interaction between ecology and toxicology Designed for use by toxicologists with no ecology training, and for ecologists with no toxicology training There is a new chapter on pollutants in habitats and global warming




Reviews of Environmental Contamination and Toxicology Volume 205


Book Description

Reviews of Environmental Contamination and Toxicology attempts to provide concise, critical reviews of timely advances, philosophy and significant areas of accomplished or needed endeavor in the total field of xenobiotics, in any segment of the environment, as well as toxicological implications.




Environmental Pollution


Book Description

Pollution is the release of chemical, physical, biological or radioactive contaminants to the environment. Principal forms of pollution include: air pollution, the release of chemicals and particulates into the atmosphere. Common examples include carbon monoxide, sulphur dioxide, chlorofluorocarbons (CFCs), and nitrogen oxides produced by industry and motor vehicles. Ozone and smog are created as nitrogen oxides and hydrocarbons react to sunlight. Water pollution affects oceans and inland bodies of water. Examples include organic and inorganic chemicals, heavy metals, petrochemicals, chloroform, and bacteria. Water pollution may also occur in the form of thermal pollution and the depletion of dissolved oxygen. Soil contamination often occurs when chemicals are released by spill or underground storage tank leakage. Contaminants include hydrocarbons, heavy metals, MTBE, herbicides, pesticides and chlorinated hydrocarbons. Often occurs with water pollution, thanks to surface runoff and groundwater. Radioactive contamination was added in the wake of 20th-century discoveries in atomic physics. Noise pollution encompasses roadway noise, aircraft noise, industrial noise as well as high-intensity sonar. Light pollution, includes light trespass, over-illumination and astronomical interference. Visual pollution, which can refer to the presence of overhead power lines, highway billboards, scarred landforms (as from strip mining), open storage of junk or municipal solid waste. The nature, distribution and ecological effects of all types and forms of pollutants in air, soil and water are the subject of this book.