Download or read book Phagocytosis of Bacteria and Bacterial Pathogenicity written by Joel D. Ernst and published by Cambridge University Press. This book was released on 2006-09-07 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides up-to-date information on the crucial interaction of pathogenic bacteria and professional phagocytes, the host cells whose purpose is to ingest, kill, and digest bacteria in defense against infection. The introductory chapters focus on the receptors used by professional phagocytes to recognize and phagocytose bacteria, and the signal transduction events that are essential for phagocytosis of bacteria. Subsequent chapters discuss specific bacterial pathogens and the strategies they use in confronting professional phagocytes. Examples include Helicobacter pylori, Streptococcus pneumoniae, and Yersinae, each of which uses distinct mechanisms to avoid being phagocytosed and killed. Contrasting examples include Listeria monocytogenes and Mycobacterium tuberculosis, which survive and replicate intracellularly, and actually cooperate with phagocytes to promote their entry into these cells. Together, the contributions in this book provide an outstanding review of current knowledge regarding the mechanisms of phagocytosis and how specific pathogenic bacteria avoid or exploit these mechanisms.
Download or read book Bacterial Pathogenesis written by and published by Academic Press. This book was released on 1998-07-01 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt: Established almost 30 years ago, Methods in Microbiology is the most prestigious series devoted to techniques and methodology in the field. Now totally revamped, revitalized, with a new format and expanded scope, Methods in Microbiology will continue to provide you with tried and tested, cutting-edge protocols to directly benefit your research. Focuses on the methods most useful for the microbiologist interested in the way in which bacteria cause disease Includes section devoted to 'Approaches to characterising pathogenic mechanisms' by Stanley Falkow Covers safety aspects, detection, identification and speciation Includes techniques for the study of host interactions and reactions in animals and plants Describes biochemical and molecular genetic approaches Essential methods for gene expression and analysis Covers strategies and problems for disease control
Download or read book Bacteria A Very Short Introduction written by Sebastian G. B. Amyes and published by OUP Oxford. This book was released on 2013-05-30 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bacteria form a fundamental branch of life. They are the oldest forms of life as we know it, and they are still the most prolific living organisms. They inhabit every part of the Earth's surface, its ocean depths, and even terrains such as boiling hot springs. They are most familiar as agents of disease, but benign bacteria are critical to the recycling of elements and all ecology, as well as to human health. In this Very Short Introduction, Sebastian Amyes explores the nature of bacteria, their origin and evolution, bacteria in the environment, and bacteria and disease. In looking at our efforts to manage co-evolving bacteria, he also considers the challenges of resistance to antibiotics. ABOUT THE SERIES: The Very Short Introductions series from Oxford University Press contains hundreds of titles in almost every subject area. These pocket-sized books are the perfect way to get ahead in a new subject quickly. Our expert authors combine facts, analysis, perspective, new ideas, and enthusiasm to make interesting and challenging topics highly readable.
Download or read book Bacterial Pathogenesis Interaction of pathogenic bacteria with host cells written by Virginia L. Clark and published by Gulf Professional Publishing. This book was released on 1994 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bacterial Pathogenesis written by Frank R. DeLeo and published by Springer Science & Business Media. This book was released on 2008-01-31 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bacterial infections affect world health today as a leading cause of morbidity and mortality. This book presents in-depth methods and state-of-the-art protocols for investigating specific mechanisms of pathogenesis for a wide range of bacteria. Written by experts in the field, this invaluable collection includes protocols to study host-pathogen interactions, animal models of infection, and novel approaches to identifying therapeutic targets designed to control infections.
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 Bacterial Capsules written by Klaus Jann and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many bacteria, such as certain Neisseria and Haemophilus or Escherichia coli, are able to withstand the bactericidal activity of complement and phagocytes. This bacterial self protection is brought about by encapsulation. Bacterial capsules thus enable the pathogenic bacteria to survive in the host by counter action or evasion of the nonspecific host defense in the early pre immune phase of an infection. It is only in the late immune phase of the infection, when specific anticapsular antibodies are formed and enforce the host's defense system, that this protective action is overcome. Encapsulated bacteria are then killed and eliminated. Interestingly, some capsules can not or only inefficiently be handled by the immune system. The ensuing lack of antibody formation results in a prolonged susceptibility of the host to the pathogenic bacteria exhibiting such capsules. It was found that bacterial capsules consist of acidic poly saccharides. From this it followed that the role of the capsules in the interaction of encapsulated bacteria with the host may be due to the chemistry of the capsular polysaccharides. This led to intensive studies of capsular polysaccharides in many laboratories. Our increasing knowledge of the structural features of capsular polysaccharides prompted not only immuno chemical studies analyzing the interactions of these poly saccharide antigens and characterizing the epitopes, but also investigations into their biosynthesis. These studies were complemented and supported by genetic analyses. Today many interdisciplinary investigations of capsular polysaccharides are in progress.
Download or read book Bacteria Complement and the Phagocytic Cell written by Felipe C. Cabello and published by Springer. This book was released on 2012-06-17 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phagocytic cells and complement are probably the most important components of host defense against bacteria which, after overcoming the mucosal and epithelial barriers, multiply in the subepithelial tissue and may threaten to disseminate and invade the blood stream and different organs. Questions concerning the factors which regulate the interactions of the bacterial cell with host defenses are a challenge to research and lead to practical applications for the prevention, treatment and diagnosis of infectious diseases. The questions of expression and regulation of virulence related bacterial genes and gene products, the specific mechanisms of defence reactions by complement and phagocytic cells, their mutual interactions with bacteria and especially bacterial surfaces are focused. Considerations on how to translate this knowledge into the management of infectious diseases are also included.
Download or read book The Pathogenesis of Bacterial Infections written by George G. Jackson and published by Springer Science & Business Media. This book was released on 2013-03-07 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: G. G. Jackson The pathogenesis of bacterial infection defines the dynamics at an interface of ecologic association of bacteria and host. First, it occurs at the portal of initial contact with a per missive target cell. The infected cell provides either a passive or a specific receptor for the bacterium or its products, to gether with ligands and an environment of helper and inhibiting factors. The result is bacterial replication to produce an im balance of a potentially commensal relation which, under other defined conditions, would be optimal for the survival of both the host and bacterial cells. Virulence and pathogenesis are both absolute and relative terms. They must be interpreted strictly according to the circumstances of site-specific inter actions of bacterial and host cells, membrane composition, structure, characteristics, and environmental substances. The bacteria themselves may have, acquire, or switch on or off under certain conditions, the products or properties that produce cellular damage that we recognize as virulence. Another result of bacterial infection may be to stimulate a normal host cell function to perform at a pathophysiologic level, causing illness that we recognize as virulence. A third marker of virulence may be the ability to invade a cell or tissue barrier and produce a pathologic effect at a site that is remote from the portal of commensal association or pathologic entry.
Download or read book Bacterial Invasion of Host Cells written by Richard J. Lamont and published by Cambridge University Press. This book was released on 2004-03-29 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book concerns the intimate association between bacteria and host cells. Many bacterial pathogens are able to invade and survive within cells at mucosal membranes. Remarkably, the bacteria themselves orchestrate this process through the exploitation of host cellular signal transduction pathways. Intracellular invasion can lead to disruption of host tissue integrity and perturbation of the immune system. An understanding of the molecular basis of bacterial invasion and of host cell adaptation to intracellular bacteria will provide fundamental insights into the pathophysiology of bacteria and the cell biology of the host. The book details specific examples of bacteria that are masters of manipulation of eukaryotic cell signaling and relates these events to the broader context of host-pathogen interaction. Written by experts in the field, this book will be of interest to researchers and graduate students in microbiology, immunology, biochemistry, as well as molecular medicine and dentistry.
Download or read book Bacterial Pathogens and Their Virulence Factors written by Douglas I. Johnson and published by Springer. This book was released on 2017-11-23 with total page 461 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bacterial Pathogens and their Virulence Factors contains a detailed description of 32 major bacterial pathogens that affect human health and their associated virulence determinants. Chapter 1 gives an overview of the different types and classes of general virulence factors involved in host cell adherence and invasion, dissemination within the host, host cell damage, and evasion of host defense systems, as well as mechanisms by which these virulence factors are regulated. Chapters 2 through 33 give concise descriptions of the disease states associated with the 32 bacterial genera and their major pathogenic species, along with an in-depth description of the individual virulence factors that have been found to be functionally involved in pathogenicity. A detailed bibliography derived from primary literature and review articles accompanies each of these chapters, allowing the reader to delve more deeply into individual pathogens and their virulence determinants. Chapter 34 discusses the exciting possibilities and initial successes of using detailed information on a pathogen’s virulence toolkit to design new therapeutics aimed at specific virulence traits.
Download or read book Bacteria and Intracellularity written by Pascale Cossart and published by John Wiley & Sons. This book was released on 2019-12-20 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bacteria and Intracellularity clearly demonstrates that cellular microbiology as a field has reached maturity, extending beyond the strictly cellular level to infections of various organs and tissues. Decades of intense investigation into host-bacterial pathogen interactions have highlighted common concepts in intracellularity but also very diverse mechanisms underlying the various infections produced by bacteria. This book offers a wide-ranging look at the latest studies, including: foodborne pathogens, including how, when, and where bacteria interact with the gut and its microbiota infections of the urogenital tract, endothelial barriers, and the nervous system major advances in work with Mycobacterium tuberculosis and M. leprae subcellular microbiology, including metabolism of infected cells, nuclear biology, and microRNAs endosymbionts, in particular the latest work with Wolbachia and its effect on insect transmission of viral pathogens research into cell autonomous defense pathways that has led to major insights into immunology and innate immunity the latest developments in technology, for the next steps in the study of intracellularity All facets of cellular physiology, within the entire scope of cells and host tissues, can be targeted by pathogens. This book offers to researchers, students, and laboratorians a valuable overview of the state of current research into the cellular microbiology of host-pathogen interactions.
Download or read book Bacterial Pathogenesis written by Abigail A. Salyers and published by . This book was released on 2002 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bacterial Pathogenesis: A Molecular Approach is the first text designed to provide a comprehensive introduction to this dynamic field for both students and researchers. The application of molecular techniques to the study of bacterium-host interaction has made possible great progress in fundamental understanding of the molecular basis of infectious diseases. In the text the authors integrate material from pathogenic microbiology, molecular biology, immunology, and human physiology to provide a complete but accessible overview of the field.
Download or read book Cytoskeleton written by Jose C. Jimenez-Lopez and published by BoD – Books on Demand. This book was released on 2017-05-17 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: The cytoskeleton is a highly dynamic intracellular platform constituted by a three-dimensional network of proteins responsible for key cellular roles as structure and shape, cell growth and development, and offering to the cell with "motility" that being the ability of the entire cell to move and for material to be moved within the cell in a regulated fashion (vesicle trafficking). The present edition of Cytoskeleton provides new insights into the structure-functional features, dynamics, and cytoskeleton's relationship to diseases. The authors' contribution in this book will be of substantial importance to a wide audience such as clinicians, researches, educators, and students interested in getting updated knowledge about molecular basis of cytoskeleton, such as regulation of cell vital processes by actin-binding proteins as cell morphogenesis, motility, their implications in cell signaling, as well as strategies for clinical trial and alternative therapies based in multitargeting molecules to tackle diseases, that is, cancer.
Download or read book Phagocytosis Molecular Mechanisms and Physiological Implications written by Esther M. Lafuente and published by Frontiers Media SA. This book was released on 2020-12-03 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
Download or read book Pathogenic Bacteria written by Sahra Kırmusaoğlu and published by BoD – Books on Demand. This book was released on 2020-12-09 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pathogenic bacteria are the main problem in hospital- and community-acquired infections. As bacteria continue to develop more resistance to antibiotics, it is imperative to develop antibacterial treatment strategies. Written by experts from all over the world, this book examines pathogenic bacteria and their link to multidrug resistance. Over thirteen chapters, it presents examples of pathogenesis, virulence factors, and treatment strategies.
Download or read book General Microbiology written by Linda Bruslind and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Welcome to the wonderful world of microbiology! Yay! So. What is microbiology? If we break the word down it translates to "the study of small life," where the small life refers to microorganisms or microbes. But who are the microbes? And how small are they? Generally microbes can be divided in to two categories: the cellular microbes (or organisms) and the acellular microbes (or agents). In the cellular camp we have the bacteria, the archaea, the fungi, and the protists (a bit of a grab bag composed of algae, protozoa, slime molds, and water molds). Cellular microbes can be either unicellular, where one cell is the entire organism, or multicellular, where hundreds, thousands or even billions of cells can make up the entire organism. In the acellular camp we have the viruses and other infectious agents, such as prions and viroids. In this textbook the focus will be on the bacteria and archaea (traditionally known as the "prokaryotes,") and the viruses and other acellular agents.
