Techniques In Insect Immunology

The importance of insects for human welfare is unquestionable. This laboratory manual summarizes a number of key methods used by insect immunologists around the world. It should be helpful for those already working in this field & especially for scientists with general interest in this research topic as a methodical guide for the first steps. The experiments are described in detail, with step-by-step directions. Basic procedure for activation, detection, quantification & characterization of cellular & humoral defense reactions are given, along with protocols for more detailed investigations of cell differentiation & isolation of insect immune factors. Population genetic aspect, viral pathology & comparative studies revealing similarities with the vertebrate immune system are also included. The result described in the chapters show remarkable progress in our understanding of insect immunology. Simultaneously, the large number of still-unanswered questions make us realize that we have a lot left to learn about these fascinating animals. From future investigation we can expect a better understanding of the immune system's evolution, the discovery of new antimicrobial & regulatory insect molecules potentially useful in the therapy of human disease & new strategies for insect control.

Insects as a group occupy a middle ground in the biosphere between bacteria and viruses at one extreme, amphibians and mammals at the other. The size and general nature of insects present special problems to the study of ento mology. For example, many commercially available instruments are geared to measure in grams, while the forces commonly encountered in studying insects are in the milligram range. Therefore, techniques developed in the study of insects or in those fields concerned with the control of insect pests are often unique. Methods for measuring things are common to all sciences. Advances some times depend more on how something was done than on what was measured; indeed a given field often progresses from one technique to another as new methods are discovered, developed, and modified. Just as often, some of these techniques find their way into the classroom when the problems involved have been sufficiently ironed out to permit students to master the manipulations in a few laboratory periods. Many specialized techniques are confined to one specific research labora tory. Although methods may be considered commonplace where they are used, in another context even the simplest procedures may save considerable time. It is the purpose of this series (1) to report new developments in method ology, (2) to reveal sources of groups who have dealt with and solved particular entomological problems, and (3) to describe experiments which may be appli cable for use in biology laboratory courses.

This volume details methods and protocols necessary to further the study of insect immunity. Chapters guide readers through up-to-date genomic and transcriptomic approaches, insect samples for proteomic analysis, hemocytes in Drosophila, cellular response in Lepidoptera, insect AMPs, manipulate the composition of mosquito microbiota, viral infections in insects, infections by entomopathogenic nematodes, immune response following oral infections, and protocols to to monitor the effect of septic infections with human pathogens using B. mori as a model. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Authoritative and cutting-edge, Immunity in Insects aims to ensure successful results in the further study of this vital field.Incl .

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In insect and other arthropod immune systems, discrimination between self and nonself tissues is accomplished through the combined actions of two immunocytes and several humoral factors. Immunology of Insects and Other Arthropods presents a comprehensive look at this and other important topics in arthropod immunology. Issues discussed include insect immunocytes and other hemocytes, including computer image analysis of immunocyte serial sections; the two basic cellular immune reactions (phagocytosis and encapsulation), including the molecular basis and roles of gap junctions in encapsulation; how encapsulation is affected by polydnavirus and encapsulation-promoting factors; why insect cells are immune to HIV; humoral factors; and antibacterial factors in Lepidoptera, Diptera, and other insect orders. Other topics include hemolymph proteins interacting with mammalian complement cascade; adaptive humoral response in the American cockroach; antigenic stimulation of hemaglutinin production in insects; and the applications of the Limulus Amebocyte Lysate (LAL) in detecting endotoxins in pharmaceuticals, medical devices, clinical diagnosis, and hygienic control. This book represents an important reference source for hematologists, pathologists, immunologists, AIDS researchers, comparative immunologists, and pharmaceutical companies.

Under continual attack from both microbial pathogens and multicellular parasites, insects must cope with immune challenges every day of their lives. However, this has not prevented them from becoming the most successful group of animals on the planet. Insects possess highly-developed innate immune systems which have been fine-tuned by an arms race with pathogens spanning hundreds of millions of years of evolutionary history. Recent discoveries are revealing both an unexpected degree of specificity and an indication of immunological memory - the functional hallmark of vertebrate immunity. The study of insect immune systems has accelerated rapidly in recent years and is now becoming an important interdisciplinary field. Furthermore, insects are a phenomenally rich and diverse source of antimicrobial chemicals. Some of these are already being seriously considered as potential therapeutic agents to control microbes such as MRSA. Despite a burgeoning interest in the field, this is the first book to provide a coherent synthesis and is clearly structured around two broadly themed sections: mechanisms of immunity and evolutionary ecology. This novel text adopts an interdisciplinary and concept-driven approach, integrating insights from immunology, molecular biology, ecology, evolutionary biology, parasitology, and epidemiology. It features contributions from an international team of leading experts. Insect Infection and Immunity is suitable for both graduate students and researchers interested in insect immunity from either an evolutionary, genetical, physiological or molecular perspective. Due to its interdisciplinary and concept-driven approach, it will also appeal to a broader audience of immunologists, parasitologists and evolutionary biologists requiring a concise overview.

Neurochemical Techniques in Insect Research properly emphasizes the insect. It only scratches the surface of the exploding repertoire of general neuro chemical techniques that can be applied to insect research in 1985. But it al so presents the advantages of using insects for studying certain biological questions that are approachable by neurochemical techniques. Even more so, it summarizes the long list of unique problems encountered in attempting to study insects by neurochemical techniques. As in other volumes of this series, the contributors to this volume are the authorities in the field. They themselves have developed much of the material presented. Thus the sum effort provides a true description of the state of the art; and, pleasantly, it does so in a very complete and clear manner. Readers of this series will not need to be reminded that, despite the fact that vertebrates make up only about 3% of all animal species, research in in vertebrates such as insects has lagged behind that on vertebrates, at least in the neurochemistry area; the relative simplicity and large cell size of the in sect nervous system has always provided incentive for work in neurophysiol ogy and neuroanatomy. Toxicology interests will always stimulate a certain amount of work on insect neuropharmacology, and insects are extremely suitable for several areas of toxin research. Last but not least, the insects are beautiful organisms for which the applications of genetics can be made to the study of nervous system function.