Download or read book Streptococcal Superantigens written by Anshu Babbar and published by Springer. This book was released on 2015-07-24 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides ample knowledge and better understanding of Streptococcus pyogenes and their superantigens. Many illustrations make this a highly informative book. This book elucidates briefly Streptococcus pyogenes as a strict human pathogen possessing an array of virulence factors. These help in evading host immune responses such as by the activation of non-specific T-cell subpopulations by producing superantigens. This book mainly focuses on streptococcal superantigens and explains how they are different from conventional antigens. Moreover, it elaborates those diseases in which superantigens are actively involved. Useful aspects of superantigens and different therapeutic interventions to eradicate superantigens induced diseased are also discussed.
Download or read book Superantigens written by Bernhard Fleischer and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume of Current Topics in Microbiology and Immunology is concerned with a class of molecules that are the most potent polyclonal stimulators of T lymphocytes of several species. These molecules have been named "superantigens" because they use a mechanism of T cell stimulation closely mimicking MHC-restricted recognition of specific antigen: they act on variable parts of T cell antigen receptors and are presented by MHC class II molecules. Prototypes of these molecules are the pyrogenic exotoxins produced by S. aureus and S. pyogenes, of which the staphylococcal enterotoxins and the toxic shock syndrome toxin are the best known. Superantigens also occur endogen ously in mice, most notably the enigmatic Mis determinants, that have withstood characterization for nearly 20 years. Only very recently was it found that Mis is probably encoded by endogenous retroviruses. The list of candidates that are implicated as being superantigens is growing. In many cases, however, the proof that a given molecule indeed falls into this category is still missing.
Download or read book Bacterial Superantigens written by Jacques Thibodeau and published by . This book was released on 1995 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although the field of superantigens (SAgs) has boomed in recent years, the function of these proteins in bacterial infection remains elusive. This volume begins with a brief introduction, followed by 15 chapters. Among the topics are structural studies of streptococcal pyrogenic exotoxin superantigens; Yersinia infection--the virulence determinants and SAgs they produce; structural features of T cell receptor recognition of SAgs; the pathophysiology of bacterial SAgs in vivo; and antibody targeted SAgs in experimental tumor therapy. Annotation copyright by Book News, Inc., Portland, OR
Download or read book Bacterial Superantigens written by Rafick P. Sékaly and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Superantigens and Superallergens written by Gianni Marone and published by Karger Medical and Scientific Publishers. This book was released on 2007-01-01 with total page 259 pages. Available in PDF, EPUB and Kindle. Book excerpt: Superantigens constitute a growing family of bacterial and viral proteins that share the capacity of inducing massive activation of the immune system. This volume contains contributions from leaders in the field of classical T cell superantigens and sheds light on relevant B cell superantigens at the molecular and biochemical levels. This is the first volume to put together basic and clinical aspects of the classical T cell superantigens, B cell superantigens and superallergens. It will therefore be indispensable reading to basic and clinical immunologists, microbiologists, virologists and specialists in allergic and immune disorders.
Download or read book Bacterial Superantigens written by Jacques Thibodeau and published by R G Landes Company. This book was released on 1995 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Superantigens written by Leung and published by CRC Press. This book was released on 1997-02-20 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt: This up-to-date sourcebook covers viral and bacterial superantigens (SAgs) from molecular structure and immunological processes to pathology and treatment of superantigen-mediated human diseases. Discusses diseases beyond Toxic Shock Syndrome, such as autoimmune and inflammatory skin conditions, as well as the role of superantigens in other infectious diseases. Illustrated with molecular structures of superantigens.
Download or read book Superantigen Protocols written by Teresa Krakauer and published by Springer Science & Business Media. This book was released on 2008-02-05 with total page 259 pages. Available in PDF, EPUB and Kindle. Book excerpt: Leading researchers in the biological, chemical, and physical investigation of superantigens describe in step-by-step detail their best experimental techniques to assess the physical characteristics and biological effects of superantigens. Their protocols range from those for investigating the interactions of superantigens with cellular receptors to those for the analysis of their immunological and biological effects, including methods for using BIOcore to determine binding kinetics and establishing various lymphocyte cell culture systems. There are also accounts of such methods as the RNase protection assay, cytokine ELISA, FACS analysis, and cytokine production at the single cell level..
Download or read book Superantigens written by Brigitte T. Huber and published by CSHL Press. This book was released on 1993 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Superantigens are microbial products that defy the conventional notion of lymphocyte activation to produce an unusually vigorous, genetically unrestricted response among many subsets of antigen-specific T cells. Bacterial toxins and certain viral gene products behave as superantigens, deleting T cells in vivo and stimulating their proliferation in vitro. These observations raise many fascinating questions about the nature of T-cell activation and microbial pathogenesis. This volume is an up-to-date, wide-ranging examination of the function and significance of superantigens in virology, biochemistry, and cell and stuctural biology as well as immunology. The book will interest graduate students and postdoctoral fellows in a wide range of biomedical sciences.
Download or read book Janeway s Immunobiology written by Kenneth Murphy and published by Garland Science. This book was released on 2010-06-22 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Janeway's Immunobiology CD-ROM, Immunobiology Interactive, is included with each book, and can be purchased separately. It contains animations and videos with voiceover narration, as well as the figures from the text for presentation purposes.
Download or read book The Comprehensive Sourcebook of Bacterial Protein Toxins written by Joseph E. Alouf and published by Elsevier. This book was released on 2005-12-20 with total page 1072 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the major achievements and discoveries relevant to bacterial protein toxins since the turn of the new century illustrated by the discovery of more than fifty novel toxins (many of them identified through genome screening). The establishment of the three-dimensional crystal structure of more than 20 toxins during the same period offers deeper knowledge of structure-activity relationships and provides a framework to understand how toxins recognize receptors, penetrate membranes and interact with and modify intracellular substrates. Edited by two of the most highly regarded experts in the field from the Institut Pasteur, France 14 brand new chapters dedicated to coverage of historical and general aspects of toxinology Includes the major toxins of both basic and clinical interest are described in depth Details applied aspects of toxins such as therapy, vaccinology, and toolkits in cell biology Evolutionary and functional aspects of bacterial toxins evaluated and summarized Toxin applications in cell biology presented Therapy (cancer therapy, dystonias) discussed Vaccines (native and genetically engineered vaccines) featured Toxins discussed as biological weapons, comprising chapters on anthrax, diphtheria, ricin etc.
Download or read book Bacterial Exotoxins How Bacteria Fight the Immune System written by Inka Sastalla and published by Frontiers Media SA. This book was released on 2016-10-07 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bacterial pathogenicity factors are functionally diverse. They may facilitate the adhesion and colonization of bacteria, influence the host immune response, assist spreading of the bacterium by e.g. evading recognition by immune cells, or allow bacteria to dwell within protected niches inside the eukaryotic cell. Exotoxins can be single polypeptides or heteromeric protein complexes that act on different parts of the cells. At the cell surface, they may insert into the membrane to cause damage; bind to receptors to initiate their uptake; or facilitate the interaction with other cell types. For example, bacterial superantigens specifically bind to major histocompatibility complex (MHC) II molecules on the surface of antigen presenting cells and the T cell receptor, while cytolysins cause pore formation. For intracellular activity, exotoxins need to be translocated across the eukaryotic membrane. Gram-negative bacteria can directly inject effector proteins in a receptor-independent manner by use of specialized needle apparatus such as bacterial type II, III, or type IV secretion systems. Other methods of translocation include the phagocytic uptake of bacteria followed by toxin secretion, or receptor-mediated endocytosis which allows the targeting of distinct cell types. Receptor-based uptake is initiated by the binding of heteromeric toxin complexes to the cell surface and completed by the translocation of the effector protein(s) across the endosomal membrane. In the cytosol, toxins interact with specific eukaryotic target proteins to cause post-translational modifications that often result in the manipulation of cellular signalling cascades and inflammatory responses. It has become evident that the actions of some bacterial toxins may exceed their originally assumed cytotoxic function. For example, pore-forming toxins do not only cause cytolysis, but may also induce autophagy, pyroptosis, or activation of the MAPK pathways, resulting in adjustment of the host immune response to infection and modification of inflammatory responses both locally and systemically. Other recently elucidated examples of the immunomodulatory function of cell death-inducing exotoxins include TcdB of Clostridium difficile which activates the inflammasome through modification of cellular Rho GTPases, or the Staphyloccocus d-toxin which activates mast cells. The goal of this research topic was to gather current knowledge on the interaction of bacterial exotoxins and effector proteins with the host immune system. The following 16 research and review articles in this special issue describe mechanisms of immune modification and evasion and provide an overview over the complexity of bacterial toxin interaction with different cells of the immune system.
Download or read book Biological Significance of Superantigens written by Bernhard Fleischer and published by S Karger Ag. This book was released on 1992 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Necrotizing Soft Tissue Infections written by Anna Norrby-Teglund and published by Springer Nature. This book was released on 2020-10-20 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume aims to enhance the current understanding of clinical features, treatment and pathogenic aspects in necrotizing soft tissue infections. Various representative case studies are discussed to enhance the readers’ understanding of these complex diseases. Necrotizing soft tissue infections are rapidly spreading infections that may cause extensive soft tissue or limb loss, multiorgan failure and are associated with a considerable fatality rate. It is undisputed that rapid diagnosis and prompt intervention is directly related to survival. The initial presentation may be limited to unspecific symptoms such as tenderness, swelling, erythema and pain. Thus, diagnosis and management are challenging due to heterogeneity in clinical presentation, in co-morbidities, in microbiological aetiology, as well as in the pathogenic mechanisms. An international and multidisciplinary consortium, INFECT, has for the last 6 years been pursuing research aimed to advance the understanding of the clinical and pathogenic aspects of these infections. A central part has been to create a comprehensive clinical registry and associated biobank which have also formed the basis for the experimental studies. Using the INFECT patient cohort, as well as an integrated systems biology approach in patients and clinically relevant experimental models, an advanced insight of diagnostic features, causative microbial agents, treatment strategies, and pathogenic mechanisms (host and bacterial disease traits and their underlying interaction network) has been obtained.
Download or read book Encyclopedic Reference of Immunotoxicology written by Hans-Werner Vohr and published by Springer. This book was released on 2005-06-01 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Der Thurgauer Volks Freund Kalender mit Holzschnitten written by and published by . This book was released on 1829 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Viral Superantigens written by Kyuhei Tomonari and published by CRC Press. This book was released on 1997-05-30 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the discovery of viral superantigens in 1991, immunologists have made a number of new discoveries. The discoveries, especially those relating to the interplay between the immune system and viruses producing superantigens, have had a great impact on immunology and virology, as it appears that some diseases are triggered or exacerbated by viral superantigens. Viral Superantigens presents a complete review of this new area of study. Edited by a leading researcher and authored by a distinguished team of contributors, this comprehensive analysis covers every aspect of viral superantigens and related subjects, including critical topics such as effects on the T cell repertoire and viral superantigen-mediated diseases. Immunologists and virologists, clinical practitioners, and graduate students will find this book an invaluable resource to encourage further advances in research.
