Neurotox ’91


Book Description

NEUROTOX '91 was the fourth meeting in a series which started in 1979. The '91 meeting, like its predecessors, was held under the patronage of the Society of Chemical Industry, and despite the unfortunate proximity of hostilities in the Arabian Gulf attracted a truly international mix of industrial and academic pesticide scientists. This volume contains the text of invited papers read at the meeting and presents the dramatic developments which so excited those who attended. The potential of molecular neurobiology for gaining knowledge of target sites for neurotoxicants is now starting to be realised. These studies, in conjunction with developments in molecular imaging and modelling, provide new oppor tunities for chemists and biologists to gain insights into molecular interactions underlying intoxication. Molecular techniques have also enabled rapid ad vances on a second front, where the cloning of genes controlling pesticide resistance should have a profound impact on our understanding of this commercially important problem. The understanding of molecular events will undoubtedly be vital in future developments in chemical control of pests; however, the value of understand ing the way in which the nervous system controls behaviour and how behaviour can be modified by chemicals of bath synthetic and natural origins was highlighted. Natural products and their synthetic analogues have continued to provide new and interesting molecules which are already proving their worth as tools for the neuroscientist and may offer leads for commercial synthesis.




Environmental Neurotoxicology


Book Description

Scientists agree that exposure to toxic agents in the environment can cause neurological and psychiatric illnesses ranging from headaches and depression to syndromes resembling parkinsonism. It can even result in death at high exposure levels. The emergence of subclinical neurotoxicity-the concept that long-term impairments can escape clinical detection-makes the need for risk assessment even more critical. This volume paves the way toward definitive solutions, presenting the current consensus on risk assessment and environmental toxicants and offering specific recommendations. The book covers: The biologic basis of neurotoxicity. Progress in the application of biologic markers. Reviews of a wide range of in vitro and in vivo testing techniques. The use of surveillance and epidemiology to identify neurotoxic hazards that escape premarket screening. Research needs. This volume will be an important resource for policymakers, health specialists, researchers, and students.




Resistance’ 91: Achievements and Developments in Combating Pesticide Resistance


Book Description

The development of pesticide resistance in arthropod pests, plant pathogens and weeds can be viewed and studied from two contrasting perspectives. At a fundamental level, resistance provides an almost ideal example of adaptation to withstand severe environmental stress. Population geneticists, biochemists and, most recently, molecular biologists have cast considerable light on the nature of this adaptation in diverse taxonomic groups, and on factors determining its selection and spread within and between populations. Unlike most evolutionary phenomena, however, resistance is also of immediate practical and economic significance. Not only has the number of resistant species continued to increase inexorably, but there has been an alarming increase in the severity and extent of some resistance problems. Cases of organisms resisting virtually all available pesticides are by no means uncommon, and pose a formidable challenge in view of present difficulties in discovering and developing novel chemicals. Although most occurrences of resistance were initially monofactorial, resistance now frequently involves a suite of coexisting mechanisms that protect organisms against the same or different pesticide groups, and may even predispose them to resist new, as yet unused chemicals.




Chemical Ecology


Book Description

Chemical signals among organisms form "a vast communicative interplay, fundamental to the fabric of life," in the words of one expert. Chemical ecology is the the discipline that seeks to understand these interactions-to use biology in the search for new substances of potential benefit to humankind. This book highlights selected research areas of medicinal and agricultural importance. Leading experts review the chemistry of: Insect defense and its applications to pest control. Phyletic dominanceâ€"the survival success of insects. Social regulation, with ant societies as a model of multicomponent signaling systems. Eavesdropping, alarm, and deceitâ€"the array of strategies used by insects to find and lure prey. Reproductionâ€"from the gamete attraction to courtship nd sexual selection. The chemistry of intracellular immunosuppression. Topics also include the appropriation of dietary factors for defense and communication; the use of chemical signals in the marine environment; the role of the olfactory system in chemical analysis; and the interaction of polydnaviruses, endoparasites, and the immune system of the host.




Comparative Molecular Neurobiology


Book Description

It is generally accepted that all living organisms present on earth derive from one single primordial cell born several billion years ago. One important step in the evolution occurred some 1. 5 billion years ago with the transition from small procaryote cells with relatively simple internal structures such as bacteria to larger and more compleX: eucaryotic cells such as those found in higher animals and plants. Large membrane proteins which enable the cells to communicate appeared early in evolution, and it is believed that the nerve membrane receptors and ionic channels which are observed today in both invertebrate and vertebrate species derive from a common ancestor. Basically, the three identified superfamilies, 1) ionotropic receptors (i. e. receptors containing an integral ionic channel), 2) metabotropic receptors (receptors coupled to G proteins) and 3) voltage-dependent ionic channels (Na+, K + and Ca2+ channels) were already well differentiated when vertebrates separated from invertebrate species. The large number of subtypes which are observed in each superfamily may be of more recent evolutionary origin. To understand how this happened, the best approach was to compare the sequences and the properties of the receptors and ionic channels in species sufficiently distant in the evolutionary tree. In the present volume, many of the best specialists in the field of comparative molecular neurobiology, several of them working on vertebrate and invertebrate species, have accepted to report their most recent findings.




Insect Pheromone Research


Book Description

This book contains the proceedings of the "First International Symposium on Insect Pheromones," which was held at Wageningen, The Netherlands, from March 6 to March 11, 1994. Eighty participants from 17 countries attended the symposium, which turned out to be a unique forum for the exchange of the latest worldwide findings on insect pheromones, an opportunity to discuss and debate unsettled issues, and a mechanism to define new directions in pheromone research and foster interdisciplinary collaborations. The meeting comprised five sessions representing the breadth of disciplinary interest in pheromones, a typical charac teristic of this research area. In the sessions the following topics were presented: (1) control of pheromone production (organized by W. L. Roelofs), (2) sensory processing of pheromone signals (T. L. Payne), (3) neuroethology of pheromone mediated responses (T. C. Baker), (4) use of pheromones in direct control (A. K. Minks and R. T. Card6), and (5) evolution of pheromone communication (c. LOfstedt). All sessions started with a series of 30-minute lectures, after which ample time was reserved for discussion. In each session some participants were asked to serve as discussants and to initiate and stimulate discussion, and a rapporteur was recruited to make notes of these discussions and to summarize the general trends emerging from the session. The general program ming of the symposium was in the hands of R. T. Carde, A. K. Minks, and T. L. Payne.




Clinical Neurotoxicology E-Book


Book Description

Clinical Neurotoxicology offers accurate, relevant, and comprehensive coverage of a field that has grown tremendously in the last 20 years. You’ll get a current symptomatic approach to treating disorders caused by neurotoxic agents, environmental factors—such as heavy metals and pesticides—and more. Apply discussions of cellular and molecular processes and pathology to clinical neurology. Leading authorities and up-and-coming clinical neurotoxicologists present their expertise on wide-ranging, global subjects and debate controversies in the specialty, including Gulf War Syndrome. Provides a complete listing of neurotoxic agents—from manufactured to environmental—so you get comprehensive, clinical coverage. Covers how toxins manifest themselves according to age and co-morbidity so that you can address the needs of all your patients. Offers broad and in-depth coverage of toxins from all over the world through contributions by leading authorities and up-and-coming clinical neurotoxicologists. Features discussion of controversial and unusual topics such as Gulf War Syndrome, Parkinson’s Disease, motor neuron disease, as well as other issues that are still in question.




Nuclear Magnetic Resonance


Book Description

As a spectroscopic method, Nuclear Magnetic Resonance (NMR) has seen spectacular growth over the past two decades, both as a technique and in its applications. Today the applications of NMR span a wide range of scientific disciplines, from physics to biology to medicine. Each volume of Nuclear Magnetic Resonance comprises a combination of annual and biennial reports which together provide comprehensive of the literature on this topic. This Specialist Periodical Report reflects the growing volume of published work involving NMR techniques and applications, in particular NMR of natural macromolecules which is covered in two reports: "NMR of Proteins and Acids" and "NMR of Carbohydrates, Lipids and Membranes". For those wanting to become rapidly acquainted with specific areas of NMR, this title provides unrivalled scope of coverage. Seasoned practitioners of NMR will find this an in valuable source of current methods and applications. Specialist Periodical Reports provide systematic and detailed review coverage in major areas of chemical research. Compiled by teams of leading authorities in the relevant subject areas, the series creates a unique service for the active research chemist, with regular, in-depth accounts of progress in particular fields of chemistry. Subject coverage within different volumes of a given title is similar and publication is on an annual or biennial basis.




Molecular Mechanisms of Resistance to Agrochemicals


Book Description

Over the past 30 years one alarming trend is the emergence of plant species resistant to agrochemicals (e.g. insecticides, herbicides, fungicides). Considering the fact that these pesticides are crucial to human health and to food, feed and fiber production, impressive research was carried out during the last decade to understand the mechanisms of resistance development. This volume reviews the latest results and examines the implications of these findings for delaying or avoiding resistance in plants to agrochemicals.




Nervous System


Book Description

The International Life Sciences Institute (ILSI) was estab lished in 1978 to stimulate and support scientific research and educational programs related to nutrition, toxicology, and food safety, and to encourage cooperation in these programs among scientists in universities, industry, and government agencies to assist in the resolution of health and safety issues. To supplement and enhance these efforts, ILSI has made a major commitment to supporting programs to harmon ize toxicological testing, to advance a more uniform inter pretation of bioassay results worldwide, to promote a common understanding of lesion classifications, and to encourage wide discussion of these topics among scien tists. The Monographs on the Pathology of Laboratory Ani mals are designed to facilitate communication among those involved in the safety testing of foods, drugs, and chemicals. The complete set will cover all organ systems and is intended for use by pathologists, toxicologists, and others concerned with evaluating toxicity and carcinogen icity studies. The international nature of the project - as reflected in the composition of the editorial board and the diversity of the authors and editors - strengthens our ex pectations that understanding and cooperation will be im proved worldwide through the series. Alex Malaspina President International Life Sciences Institute Preface This book, on the nervous system, is the sixth volume of a set pre pared under the sponsorship of the International Life Sciences Insti tute (ILSI).