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The cytoplasm of Gram-negative bacteria is bound by three layers: an inner membrane, a layer of peptidoglycan, and an outer membrane. The outer membrane is an asymmetric lipidic bilayer, with phospholipids on its inner surface and lipopolysaccharides (LPSs) on the outside, with the latter being the major component of the outer leaflet and covering nearly three-quarters of the total outer cell surface. All LPSs possess the same general chemical architecture independently of bacterial activity (pathogenic, symbiotic, commensal), ecological niche (human, animal, soil, plant, water), or growth conditions. Endotoxins are large amphiphilic molecules consisting of a hydrophilic polysaccharide component and a covalently bound hydrophobic and highly conserved lipid component, termed lipid A (the endotoxin subunit). The polysaccharide component can be divided into two subdomains: the internal and conserved core region as well as the more external and highly variable O-specific chain, also referred to as the O-antigen due to its immunogenic properties. LPSs are endotoxins, one of the most potent class of activators of the mammalian immune system; they can be released from cell surfaces of bacteria during multiplication, lysis, and death. LPS can act through its biological center (lipid A component) on various cell types, of which macrophages and monocytes are the most important.

Immunologic diseases.

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Since publication of the Third Edition in 1998, the understanding of the immune mechanisms underlying autoimmunity and autoimmune disease has significantly deepened and broadened. This Fourth Edition incorporates new material and combines common themes underlying inductive and effector mechanisms and therapies that relate generally to the autoimmune disorders. It discusses the biological basis of disease at genetic, molecular, cellular, and epidemiologic levels.New to This Edition:* Tissue-specific interventions to arrest or ""cure"" autoimmune disease* Bone marrow eradication

Autoimmune diseases. --- Immunologic diseases.

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Autoimmunity is defined as an immune response against a self-antigen. This abnormal immune response can lead to tissue damage and to the development of autoimmune disease. From organ-specific autoimmune diseases, such as myasthenia gravis, to non-organ-specific, such as systemic lupus erythematosus, autoimmune diseases represent a heterogeneous group of disorders which affect approximately 6% of the population. The pathogenesis of many autoimmune diseases is complex and remains not completely understood. The aim of this book is to present current knowledge regarding pathogenic mechanisms of autoimmune diseases, clinical aspects of specific autoimmune diseases, like vitiligo, celiac disease and autoimmune liver disease, as well as insights regarding specific therapies.

Autoimmune diseases --- Treatment. --- Autoimmunologic diseases --- Autoimmunity --- Immunologic diseases --- Immunology

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Autoimmune diseases --- Treatment. --- Autoimmunologic diseases --- Autoimmunity --- Immunologic diseases

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Pediatric Allergy supplies the comprehensive guidance you need to diagnose, manage, and treat virtually any type of allergy seen in children. Drs. Leung, Sampson, Geha, and Szefler present the new full-color second edition, with coverage of the diagnosis and management of anaphylaxis, the immune mechanisms underlying allergic disease, the latest diagnostic tests, and more...in print and online at expertconsult.com. Treat the full range of pediatric allergic and immunologic diseases through clinically focused coverage relevant to both allergists and pediatricians. Unders

Allergy in children. --- Immunologic diseases in children. --- Pediatric immunopathology --- Children --- Pediatric allergy --- Allergy --- Immunologic diseases in children --- Diseases