Download or read book Investigating Complement Regulator Involvement in Innate Immune Evasion by Neisseria Gonorrhoeae written by Donnie Pickel and published by . This book was released on 2021 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: Antimicrobial resistant Neisseria gonorrhoeae (Ng) is an urgent threat to public health worldwide. Ng causes gonorrhea, the second most prevalent sexually transmitted bacterial infection. Left untreated, gonorrhea can lead to pelvic inflammatory disease, ectopic pregnancy, sterility, and in men can increase susceptibility to HIV. The current recommended treatment is a dual therapy with two antibiotics azithromycin and ceftriaxone. However, many countries are reporting cases with reduced effectiveness of this treatment method. This has placed a greater urgency on the development of preventative therapeutics. There is currently no commercial vaccine available for Ng infection. The development of preventative treatment strategies has long been impeded by Ng’s ability to evade the immune system, particularly the complement system. Ng is an obligate human pathogen and has evolved numerous mechanisms to interact with host-derived molecules that negatively regulate the activation of the immune system. Previous characterization of these mechanisms has focused on one class of complement inhibitors, fluid-phase inhibitors. To fully understand Ng immune evasion and the host molecules that contribute to it, investigating the role of the other class of complement inhibitors, membrane-associated complement inhibitors (mCIs) is needed. mCIs like CD46, CD55, and CD59 are expressed by human epithelial cells to prevent formation of the membrane attack complex on the surface of human cells. I hypothesized that these proteins may be sequestered by Ng during infection and create localized regions of immune activation allowing Ng to persist. To test this, we used a co-culture serum bactericidal assay (ccSBA) where human epithelial cells were infected with Ng, treated with normal human serum, a vehicle for the components of the complement system, and monitored bacterial viability over time. Using the ccSBA we demonstrated that increasing host expression of mCIs resulted in higher levels of Ng survival, while decreasing mCI expression resulted in lower Ng survival. We then used CRISPR to knock out all three of CD46, CD55, and CD59 simultaneously. Surprisingly, this had the opposite effect of what we expected, resulting in a substantial increase in Ng survival. We observed that the lack of mCIs rendered host cells susceptible to complement and speculated that this could result in the release of host-derived molecules that stimulated an alternative mechanism of Ng immune evasion. We used a strain of Ng deficient in this alternative mechanism and found that the absence of mCI expression resulted in a significant reduction in Ng survival. Finally, we expressed each of CD46, CD55, and CD59 individually and found that all three could support Ng survival alone. In summary, this dissertation shows that mCIs are involved in Ng immune evasion. Further it demonstrates the value of the ccSBA in investigating the role of host-derived molecules in Ng immune evasion.
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 Management of Infections in the Immunocompromised Host written by Brahm H. Segal and published by Springer. This book was released on 2018-06-18 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive, state-of-the-art review of the concepts vital to a modern treatment of common and opportunistic infections in the immunocompromised host. Chapters are written by experts in the field, and include their views on gaps in the field and future directions of research. This book begins with an overview of the normally functioning immune system followed by a detailed discussion of the major primary immunodeficiencies. Specific chapters are dedicated to providing practical knowledge in the prevention and treatment of infections in specific immunocompromised patients, including those with cancer, transplant recipients, HIV infection, and autoimmune disorders. Emphasis is placed on diagnostic evaluation, antimicrobial selection that includes consideration of the threat of antimicrobial-resistant pathogens, and immunotherapy tailored to specific patients. Finally, dedicated chapters on stem cell transplantation for patients with primary immunodeficiencies, adoptive cellular immunotherapy, and gene therapy will provide readers with insight into these rapidly evolving and cutting edge therapies.Management of Infections in the Immunocompromised Host is a valuable resource for infectious diseases specialists, immunologists, oncologists, hematologists, general physicians, students, researchers, and all other working with immunocompromised patients.
Download or read book Lyme Disease and Relapsing Fever Spirochetes written by Justin D Radolf and published by . This book was released on 2021 with total page 770 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lyme disease (Lyme borreliosis) is the most prevalent vector-borne illness in the United States and Europe and a growing threat to global health. In addition Lyme disease is considered a model system of emerging infectious diseases. The book Borrelia: Molecular Biology, Host Interaction and Pathogenesis published in 2010 was the first state-of-the-art reference work covering the myriad, interlaced facets of the enzootic disorders caused by pathogenic Borrelia. This current volume, by the same editors, builds on the previous work and contains a vast amount of new information, a wider scope, and increased coverage of genomics, genetics, evolutionary biology, vector biology, physiology, pathogenicity, immune response, and immune evasion. Written by renowned scientists who have made seminal contributions to the field, this book contains an expansive treatment of the options to track live spirochetes and evaluate gene expression in ticks and mice, provides insights into the workings of the flagellar motor, presents up-to-date research on the modulation of gene expression, and reviews recent studies on the Lyme disease spirochete's networks of regulatory pathways. The volume highlights and describes in detail the tremendous advances in understanding of the Borrelia genus at the molecular and cellular levels as well as the pathogenesis of Lyme disease and relapsing fever. This comprehensive volume is indispensable for anyone involved in Borrelia and Lyme disease research and is highly recommended for microbiologists, immunologists, and physicians with an interest in spirochetes, vector-borne illness, or emerging infectious diseases. The book is a recommended reference volume for all microbiology libraries.
Download or read book Origin and Evolution of the Vertebrate Immune System written by L. Du Pasquier and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: The comparative approach to immunology can be traced to the era of Pasteur and Metchnikov in which observations regarding foreign recognition in invertebrates was a factor in the develop ment of the principal concepts that created the foundation of what now is the broad field of immunology. With each major experimental and conceptual breakthrough, the classical, albeit essential, question has been asked "are the immune systems of phylogenetically primitive vertebrates and invertebrates similar to that of mammals?" Somewhat surprisingly for the jawed verte brates, the general answer has been a qualified form of "yes", whereas for agnathans and invertebrate phyla it has been "no" so far. The apparent abruptness in the appearance of the immune system of vertebrates is linked to the introduction of the somatic generation of the diversity of its antigen specific receptors. Therefore the questions regarding the origin and evolution of the specific immune system revolve around this phenomenon. With respect to the origin of the system (aside from the or igin of the rearranging machinery itself, the study of which is still in its infancy) one can ask questions about the cellular and mo lecular contexts in which the mechanism was introduced.
Download or read book Clinical Immunology E Book written by Robert R. Rich and published by Elsevier Health Sciences. This book was released on 2022-08-23 with total page 1308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offering unique, comprehensive coverage of both basic science and clinical scenarios, Clinical Immunology: Principles and Practice, 6th Edition, brings you up to date with every aspect of this fast-changing field. It examines the molecular, cellular, and immunologic bases of immunologic diseases and their broader systemic implications; it also includes complete coverage of common and uncommon immunologic disorders. Updated with all the latest immunologic research and clinical implications, including breakthrough immunotherapies and molecular-based treatment protocols, this fully revised edition provides authoritative guidance from some of the most respected global leaders in immunology in one complete, well-illustrated volume. Includes extensive revisions that reflect rapidly expanding research and clinical advances, including breakthrough drug and immunotherapies such as immune checkpoint inhibitors, immunotherapies for cancer, precision medicine, and transfusion medicine. Contains new chapters on COVID-19, immune responses, and the role of the immune system; immunoregulatory deficiencies; immune checkpoints; CAR T cells, including new cellular-based immunotherapy; gene therapy, including CRISPR and gene selection; and a clinically focused chapter on asthma. Provides new genetics content focused on data applications. Addresses notable advances in key areas such as the importance of the microbiota to normal immune system development and to the pathogenesis of immunologic and inflammatory diseases; relationships between the innate and adaptive immune systems; progress in rapid and cost-effective genomics; cell signaling pathways and the structure of cell-surface molecules; and many more. Covers hot topics such as the role of genetics and genomics in immune response and immunologic disease, atherosclerosis, recurrent fever syndromes, aging and deficiencies of innate immunity, the role of microbiota in normal immune system development and in the pathogenesis of immunologic and inflammatory diseases, and novel therapeutics. Features a user-friendly format with color-coded boxes highlighting critical information on Key Concepts, Clinical Pearls, Clinical Relevance, and Therapeutic Principles. Summarizes promising research and development anticipated over the next 5–10 years with "On the Horizon" boxes and discussions of translational research.
Download or read book The Immune Response written by Tak W. Mak and published by Academic Press. This book was released on 2005-11-11 with total page 1217 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Immune Response is a unique reference work covering the basic and clinical principles of immunology in a modern and comprehensive fashion. Written in an engaging conversational style, the book conveys the broad scope and fascinating appeal of immunology. The book is beautifully illustrated with superb figures as well as many full color plates. This extraordinary work will be an invaluable resource for lecturers and graduate students in immunology, as well as a vital reference for research scientists and clinicians studying related areas in the life and medical sciences. Current and thorough 30 chapter reference reviewed by luminaries in the field Unique ‘single voice' ensures consistency of definitions and concepts Comprehensive and elegant illustrations bring key concepts to life Provides historical context to allow fuller understanding of key issues Introductory chapters 1-4 serve as an ‘Immunology Primer' before topics are discussed in more detail
Download or read book The Human Complement System in Health and Disease written by John E. Volanakis and published by CRC Press. This book was released on 1998-02-25 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: This authoritative, single-source reference provides comprehensive examinations of the complement system-offering recent findings in basic science on the structure, biology, physiology, and pathophysiology of complement proteins and the latest therapeutic approaches towards the control of complement-mediated diseases. Written by over 40 international experts from North America, Europe, and Asia, The Human Complement System in Health and Disease describes the molecular architecture of the complement system details the structure of complement genes discusses gene organization as well as the topology and chemistry of ligand-binding sites and catalytic centers of complement proteins analyzes complement organization and activation, including phylogeny and the newly discovered lectin pathway elucidates the regulation of complement gene expression and the structure and function of bioactive peptides explicates opsonic and immunoregulatory properties of complement fragments, endothelial responses, and interactions with viruses and bacteria and more!
Download or read book Regulation of Bacterial Virulence written by Michael L. Vasil and published by American Society for Microbiology Press. This book was released on 2012-12-05 with total page 1189 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book The Third Component of Complement written by John D. Lambris and published by Springer Science & Business Media. This book was released on 2013-03-12 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: The third component of complement, C3, is one of the most versatile proteins and an important participant in immune surveillance and immune response pathways. Its multifunctio nality is based on its ability to interact specifically with multiple serum complement proteins, cell surface receptors, and mem brant;-associated regulatory proteins. One of its most intriguing strategies of interaction with cell surfaces is the covalent binding of activated C3 through the internal thioester. The field has expanded over the past 10 years and a wealth of information has accumulated. C3 from various species and many of the human C3 binding proteins have been cloned and expressed. Numerous cellular responses mediated by the diffe rent fragments of C3 have been described. The findings that C3 interacts in a ligand-receptor-like fashion with proteins of nonself origin such as the gC of herpes simplex virus, a 70-kDa protein from Candida albicans, proteins from Epstein-Barr virus, etc. has opened a new field of investigation. The papers assembled in this volume summarize the wealth of data on the various aspects of the C3 interactions; together they bring to the reader new information on the chemistry, molecular gene tics, biology, and pathophysiology of C3 and C3-binding proteins. Emphasis is given to structural features as they relate to functions. Spring 1989 JOHN D. LAMBRIS, HANS J. MULLER-EBERHARD Table of Contents J. E. VOLANAKIS: Participation of C3 and Its Ligands in Complement Activation . . . . . . . . . . . 1 S. R. BARNUM, G. FEY, and B. F. TACK: Biosynthesis and Genetics of C3 . . . . . . . . . . . . .
Download or read book Stiehm s Immune Deficiencies written by Kathleen E. Sullivan and published by Academic Press. This book was released on 2020-05-23 with total page 1334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stiehm’s Immune Deficiencies: Inborn Errors in Immunity, Second Edition, is ideal for physicians and other caregivers who specialize in immunology, allergies, infectious diseases and pulmonary medicine. It provides a validated source of information for care delivery to patients, covering approaches to diagnosis that use both new genetic information and emphasize screening strategies. Management has changed dramatically over the past five years, so approaches to infection and autoimmunity are emphasized in an effort to improve outcomes and disseminate new information on the uses of targeted therapy. Covers immune deficiencies that are presented in a practical way, providing helpful information for active clinicians Fills an increasingly deep gap in the information available to clinicians Presents both clinical management and scientific advances for immune deficiencies Provides a primary resource for physicians in the field of immunodeficiencies Includes website access to a range of videos relevant to the topics discussed
Download or read book The Journal of Immunology written by and published by . This book was released on 2007 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Molecular Medical Microbiology written by Yi-Wei Tang and published by Academic Press. This book was released on 2023-11-21 with total page 3535 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molecular Medical Microbiology, Third Edition presents the latest release in what is considered to be the first book to synthesize new developments in both molecular and clinical research. The molecular age has brought about dramatic changes in medical microbiology, along with great leaps in our understanding of the mechanisms of infectious disease. This third edition is completely updated, reviewed and expanded, providing a timely and helpful update for microbiologists, students and clinicians in the era of increasing use of molecular techniques, changing epidemiology and prevalence, and increasing resistance of many pathogenic bacteria. Written by experts in the field, chapters include cutting-edge information and clinical overviews for each major bacterial group, along with the latest updates on vaccine development, molecular technology and diagnostic technology. Completely updated and revised edition of this comprehensive and accessible reference on molecular medical microbiology Includes full color presentations throughout Delves into in-depth discussions on individual pathogenic bacteria in a system-oriented approach Includes a clinical overview for each major bacterial group Presents the latest information on vaccine development, molecular technology and diagnostic technology Provides more than 100 chapters on all major groups of bacteria
Download or read book Role of Neutrophils in Disease Pathogenesis written by Maitham Khajah and published by BoD – Books on Demand. This book was released on 2017-06-07 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights the important role of neutrophils in health as well as in the pathogenesis of various diseases. Section 1 provides a general background information regarding the mechanisms and various triggers of neutrophil extracellular traps (NETs) formation and their role in various infectious and noninfectious diseases (such as postinjury inflammation). Section 2 provides recent evidence regarding the role of neutrophils in the pathogenesis as well as a therapeutic target for selected disease conditions such as periodontal diseases, rheumatoid arthritis, and cystic fibrosis. Section 3 describes the anti-inflammatory properties of neutrophils with focus regarding their role in graft versus host disease. This book provides a wider picture with regard to the importance of this immune cell type in various diseases with focus on one of its recently discovered properties, NETs. Therapeutic targets aimed to modulate neutrophil functions might provide novel approaches in the treatment of various diseases of infectious and noninfectious origin.
Download or read book Lectin in Host Defense Against Microbial Infections written by Shie-Liang Hsieh and published by Springer Nature. This book was released on 2020-03-09 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book systemically presents the latest research on lectins, covering all the major topics in the field, including the heterocomplex of lectins and Toll-like receptors, protective versus pathogenic functions in connection with microbial infections, and novel strategies for enhancing host immunity against infectious diseases caused by viruses, bacteria, and fungi. Lectins are a large group of glycan-binding proteins that recognize diverse glycan and non-glycan structures expressed on prokaryotic and eukaryotic cells, and are vital to cell-cell interactions, the attachment of microbes to host cells, and the recognition and activation of immune responses to exogenous and endogenous danger signals. The composition and structure of microbes are complex and include numerous ‘pathogen-associated molecular patterns’ or ‘damage-associated molecular patterns’. As such, microbes’ interactions with immune cells activate multiple innate immunity receptors and produce distinct inflammatory reactions, which can be protective to contain microbial invasion, or pathogenic to cause tissue damage and shock syndrome in the host. The book shares lessons learned from state-of-the art research in this field, highlights the latest discoveries, and provides insightful discussions on lectin-mediated inflammatory reactions, while also outlining future research directions.
Download or read book Macromolecular Protein Complexes III Structure and Function written by J. Robin Harris and published by Springer Nature. This book was released on 2020-11-30 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers important topics such as the dynamic structure and function of the 26S proteasome, the DNA replication machine: structure and dynamic function and the structural organization and protein–protein interactions in the human adenovirus capsid, to mention but a few. The 18 chapters included here, written by experts in their specific field, are at the forefront of scientific knowledge. The impressive integration of structural data from X-ray crystallography with that from cryo-electron microscopy is apparent throughout the book. In addition, functional aspects are also given a high priority. Chapter 1 is available open access under a Creative Commons Attribution 4.0 International License via link.springer.com.
Download or read book Molecular Mechanisms of Microbial Evolution written by Pabulo H. Rampelotto and published by Springer. This book was released on 2018-10-12 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the most profound paradigms that have transformed our understanding about life over the last decades was the acknowledgement that microorganisms play a central role in shaping the past and present environments on Earth and the nature of all life forms. Each organism is the product of its history and all extant life traces back to common ancestors, which were microorganisms. Nowadays, microorganisms represent the vast majority of biodiversity on Earth and have survived nearly 4 billion years of evolutionary change. Microbial evolution occurred and continues to take place in a great variety of environmental conditions. However, we still know little about the processes of evolution as applied to microorganisms and microbial populations. In addition, the molecular mechanisms by which microorganisms communicate/interact with each other and with multicellular organisms remains poorly understood. Such patterns of microbe-host interaction are essential to understand the evolution of microbial symbiosis and pathogenesis.Recent advances in DNA sequencing, high-throughput technologies, and genetic manipulation systems have enabled studies that directly characterize the molecular and genomic bases of evolution, producing data that are making us change our view of the microbial world. The notion that mutations in the coding regions of genomes are, in combination with selective forces, the main contributors to biodiversity needs to be re-examined as evidence accumulates, indicating that many non-coding regions that contain regulatory signals show a high rate of variation even among closely related organisms. Comparative analyses of an increasing number of closely related microbial genomes have yielded exciting insight into the sources of microbial genome variability with respect to gene content, gene order and evolution of genes with unknown functions. Furthermore, laboratory studies (i.e. experimental microbial evolution) are providing fundamental biological insight through direct observation of the evolution process. They not only enable testing evolutionary theory and principles, but also have applications to metabolic engineering and human health. Overall, these studies ranging from viruses to Bacteria to microbial Eukaryotes are illuminating the mechanisms of evolution at a resolution that Darwin, Delbruck and Dobzhansky could barely have imagined. Consequently, it is timely to review and highlight the progress so far as well as discuss what remains unknown and requires future research. This book explores the current state of knowledge on the molecular mechanisms of microbial evolution with a collection of papers written by authors who are leading experts in the field.
