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Immunological And Molecular Aspects Of Bacterial Virulence

Author: S. Patrick
Publisher: Wiley-Blackwell
ISBN: 9780471952510
Size: 32.11 MB
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The living mammalian host provides a unique environment for bacterial colonisation. It is not only subject to passive change but has evolved highly specialised mechanisms, together constituting the immune system, to actively discourage microbial colonisation. It brings together under one cover aspects of the human immune response to bacteria and the genetic systems of pathogenic bacteria as well as details of the bacterial molecules involved in virulence. Although biased towards pathogenic bacteria of humans, the principles covered are equally applicable to veterinary pathogens. Immunological and Molecular Aspects of Bacterial Virulence caters for undergraduate and postgraduate science students of human and veterinary bacteriology who wish to gain a better understanding of the fundamental aspects of bacterial virulence.

Regulation Of Bacterial Virulence

Author: Michael L. Vasil
Publisher: American Society for Microbiology Press
ISBN: 1555816762
Size: 37.69 MB
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A comprehensive compendium of scholarly contributions relating to bacterial virulence gene regulation. • Provides insights into global control and the switch between distinct infectious states (e.g., acute vs. chronic). • Considers key issues about the mechanisms of gene regulation relating to: surface factors, exported toxins and export mechanisms. • Reflects on how the regulation of intracellular lifestyles and the response to stress can ultimately have an impact on the outcome of an infection. • Highlights and examines some emerging regulatory mechanisms of special significance. • Serves as an ideal compendium of valuable topics for students, researchers and faculty with interests in how the mechanisms of gene regulation ultimately affect the outcome of an array of bacterial infectious diseases.

Immune Recognition And Evasion Molecular Aspects Of Host Parasite Interaction

Author: L.H.T. Van Der Ploeg
Publisher: Elsevier
ISBN: 0323155669
Size: 29.69 MB
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Immune Recognition and Evasion: Molecular Aspects of Host-Parasite Interaction reviews recent advances in understanding the genetic basis of host-parasite interactions, with emphasis on antigenic epitopes, the genetics of parasites, the molecular mechanisms of immune recognition and evasion, and the way that cytokines and hormones act on host-parasite interactions. Organized into four parts encompassing 25 chapters, this volume begins with an overview of the genomic organization of the T cell receptor genes and the contribution of non-B DNA structures to switch recombination in immunoglobulin genes. It then discusses signal transduction by class II molecules encoded by the major histocompatibility complex la and the biological consequences of this process; allelic polymorphism of HLA class II antigens and its connection to the molecular basis of autoimmunity; mimicry between HLAB27 and bacteria; and genetic control of susceptibility to helminth infection. The reader is also introduced to recognition of protein antigens by antibodies; recognition of influenza antigens by class I-restricted cytotoxic T lymphocytes; the biochemical basis of cachexia of infection; mechanisms of antigenic variation in Plasmodium; and rational design of trypanocidal drugs. Geneticists and molecular biologists will gain valuable information from this book.

Molecular Biology Of The Cell

Author: Bruce Alberts
Publisher: Garland Science
ISBN: 1317563743
Size: 36.35 MB
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As the amount of information in biology expands dramatically, it becomes increasingly important for textbooks to distill the vast amount of scientific knowledge into concise principles and enduring concepts.As with previous editions, Molecular Biology of the Cell, Sixth Edition accomplishes this goal with clear writing and beautiful illustrations. The Sixth Edition has been extensively revised and updated with the latest research in the field of cell biology, and it provides an exceptional framework for teaching and learning. The entire illustration program has been greatly enhanced.Protein structures better illustrate structure–function relationships, icons are simpler and more consistent within and between chapters, and micrographs have been refreshed and updated with newer, clearer, or better images. As a new feature, each chapter now contains intriguing openended questions highlighting “What We Don’t Know,” introducing students to challenging areas of future research. Updated end-of-chapter problems reflect new research discussed in the text, and these problems have been expanded to all chapters by adding questions on developmental biology, tissues and stem cells, pathogens, and the immune system.

Bacterial Pathogenesis

Author: Virginia L. Clark
Publisher:
ISBN:
Size: 74.63 MB
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Bacterial Pathogenesis contains a selection of key articles from Volumes 235 and 236 of Methods in Enzymology. It presents in benchtop format assays and methods used to identify and characterize determinants of bacterial virulence. Key Features * Examples of In Vitro systems to determine bacterial virulence * Classical and molecular biological approaches to identify bacterial strains and components involved in virulence * Molecular approaches to study genetics and regulation in pathogenic bacteria * Molecular and cellular interaction of bacterial pathogens with host immune system

Salmonella Infections

Author: Pietro Mastroeni
Publisher: Cambridge University Press
ISBN: 9780521835046
Size: 22.68 MB
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Salmonella enterica encompasses a diverse range of bacteria that cause a spectrum of diseases in many hosts. Advancements in prevention and treatment of S. enterica infections have at times been hampered by compartmentalization of research efforts and lack of multidisciplinary approaches. This book attempts to cover a diverse range of topics related to the biology of S. enterica infections, including epidemiological and clinical aspects, molecular pathogenesis, immunity to disease and vaccines. S. enterica infections are important zoonoses and therefore material on infections of animals and public health issues have also been considered. Each chapter can be read independently, but the full contents of the book will provide the reader with up-to-date knowledge on all the key aspects of salmonellosis in humans and animals. It will therefore be of interest to graduate students and researchers, as well as to clinicians, whose research focuses on this important pathogen.

Bacterial Pathogenesis

Author: Brenda A. Wilson
Publisher: Amer Society for Microbiology
ISBN: 9781555814182
Size: 47.33 MB
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Completely revised and updated to capture new research findings, the third edition of this best–selling text is designed to provide a comprehensive introduction to bacterial pathogenesis for both students and researchers. The authors integrate material from pathogenic microbiology, molecular biology, immunology, and human physiology to provide a complete but accessible overview of the field.

Moonlighting Proteins

Author: Brian Henderson
Publisher: John Wiley & Sons
ISBN: 1118951115
Size: 14.97 MB
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Moonlighting Proteins: Novel Virulence Factors in Bacterial Infections is a complete examination of the ways in which proteins with more than one unique biological action are able to serve as virulence factors in different bacteria. The book explores the pathogenicity of bacterial moonlighting proteins, demonstrating the plasticity of protein evolution as it relates to protein function and to bacterial communication. Highlighting the latest discoveries in the field, it details the approximately 70 known bacterial proteins with a moonlighting function related to a virulence phenomenon. Chapters describe the ways in which each moonlighting protein can function as such for a variety of bacterial pathogens and how individual bacteria can use more than one moonlighting protein as a virulence factor. The cutting-edge research contained here offers important insights into many topics, from bacterial colonization, virulence, and antibiotic resistance, to protein structure and the therapeutic potential of moonlighting proteins. Moonlighting Proteins: Novel Virulence Factors in Bacterial Infections will be of interest to researchers and graduate students in microbiology (specifically bacteriology), immunology, cell and molecular biology, biochemistry, pathology, and protein science. About the Editor Brian Henderson, Division of Infection and Immunity, University College London, London, UK

Bacterial Exotoxins How Bacteria Fight The Immune System

Author: Inka Sastalla
Publisher: Frontiers Media SA
ISBN: 2889199916
Size: 24.24 MB
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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.