Cellular Molecular Immunology Abbas Free Download Pdf
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Employs a highly accessible writing style that makes difficult concepts easier to understand, and provides clear implications of immunologic science to the management of human disease and clinical practice.
Features updates from cover to cover, including new information on intracellular sensors of innate immunity, therapeutic use of monoclonal antibodies, regulation of migration events during T cell-B cell interactions, regulatory and transcriptional events in germinal center formation, immunology of infectious diseases including coronaviruses, human immunodeficiency disorders, and immunology of HIV.
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Helps readers grasp the details of experimental observations that form the basis for the science of immunology at the molecular, cellular, and whole-organism levels and draw the appropriate conclusions.
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Popular for its highly visual, straightforward approach, Cellular and Molecular Immunology delivers an accessible yet thorough understanding of this active and fast-changing field. Drs. Abul K. Abbas, Andrew H. Lichtman, and Shiv Pillai present key updates in this new edition to cover the latest developments in antigen receptors and signal transduction in immune cells, mucosal and skin immunity, cytokines, leukocyte-endothelial interaction, and more. With additional online features, this is an ideal resource for medical, graduate and undergraduate students of immunology who need a clear, introductory text for immunology courses.
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Multicellular organisms are constantly subjected to pathogens that might be harmful. Although insects lack an adaptive immune system, they possess highly effective anti-infective mechanisms. Bacterial phagocytosis and parasite encapsulation are some forms of cellular responses. Insects often defend themselves against infections through a humoral response. This phenomenon includes the secretion of antimicrobial peptides into the hemolymph. Specific receptors for detecting infection are required for the recognition of foreign pathogens such as the proteins that recognize glucans and peptidoglycans, together referred to as PGRPs and βGRPs. Activation of these receptors leads to the stimulation of signaling pathways which further activates the genes encoding for antimicrobial peptides. Some instances of such pathways are the JAK-STAT, Imd, and Toll. The host immune response that frequently accompanies infections has, however, been circumvented by diseases, which may have assisted insects evolve their own complicated immune systems. The role of ncRNAs in insect immunology has been discussed in several notable studies and reviews. This paper examines the most recent research on the immune regulatory function of ncRNAs during insect-pathogen crosstalk, including insect- and pathogen-encoded miRNAs and lncRNAs, and provides an overview of the important insect signaling pathways and effector mechanisms activated by diverse pathogen invaders.
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Autoimmune hepatitis (AIH) is a T-cell mediated, inflammatory liver disease affecting all ages and characterized by female preponderance, elevated serum transaminase and immunoglobulin G levels, positive circulating autoantibodies, and presence of interface hepatitis at liver histology. AIH type 1, affecting both adults and children, is defined by positive anti-nuclear and/or anti-smooth muscle antibodies, while type 2 AIH, affecting mostly children, is defined by positive anti-liver-kidney microsomal type 1 and/or anti-liver cytosol type 1 antibody. While the autoantigens of type 2 AIH are well defined, being the cytochrome P4502D6 (CYP2D6) and the formiminotransferase cyclodeaminase (FTCD), in type 1 AIH they remain to be identified. AIH-1 predisposition is conferred by possession of the MHC class II HLA DRB1*03 at all ages, while DRB1*04 predisposes to late onset disease; AIH-2 is associated with possession of DRB1*07 and DRB1*03. The majority of patients responds well to standard immunosuppressive treatment, based on steroid and azathioprine; second- and third-line drugs should be considered in case of intolerance or insufficient response. This review offers a comprehensive overview of pathophysiological and clinical aspects of AIH.
Autoimmune hepatitis (AIH) is a chronic inflammatory condition of the liver due to an autoimmune attack against hepatocytes. What triggers the disease remains unknown, though risk factors have been reported, and, particularly in type 2 AIH, target autoantigens have been identified [1]. AIH is characterized clinically by female preponderance and variable presentation, biochemically by high serum levels of transaminases, serologically by elevated immunoglobulin G (IgG) and positive circulating autoantibodies, and histologically by interface hepatitis. It affects all ages, including young children. AIH is subdivided into two types according to the serological profile: type 1 (AIH-1) is characterized by anti-nuclear antibody (ANA) and/or anti-smooth muscle antibody (SMA), whereas type 2 (AIH-2) is characterized by anti-liver-kidney microsomal antibody type 1 (anti-LKM1) and/or by anti-liver cytosol type 1 antibody (anti-LC1) [2].
AIH-1 patients may have cholestatic features meeting the diagnostic criteria either of primary biliary cholangitis (PBC), i.e. positive anti-mitochondrial antibody, biochemical cholestasis and non-suppurative destructive cholangitis at liver histology, or of primary/autoimmune sclerosing cholangitis (PSC/ASC), i.e. abnormal cholangiogram [3,4,5,6] (Table 1).
AIH conforms to the definition of a rare disease, affecting less than 200,000 individuals in the US and less than 1 in 2000 inhabitants in the EU. It occurs worldwide and in all ethnicities, but the vast majority of the epidemiological studies stem from Western countries, and, more recently, from Asia [1, 10].
Early epidemiological studies, carried out before the publication of diagnostic criteria, report an incidence ranging from 0.1 to 1.9 cases/100,000 in European countries and Japan [1]. More recent studies from Europe report higher disease frequency, with an incidence ranging from 1.1 to 2.56 and a prevalence ranging from 17.3 to 18.3/100,000 inhabitants [11,12,13,14]. Studies in more recent years report an even higher incidence [11, 14].
A large primary care population-based study from the UK published recently reported a yearly incidence of AIH of 1.94/100,000 inhabitants from 2002 to 2016 [15]: the authors describe a higher incidence with higher latitude; in contrast to previous studies, this report did not find an increasing incidence in more recent years. The median age at disease onset in this study, which included only adults, increased from 2002 to 2015 from 52 to 58 years.
AIH has long being considered to be rarer in Asia, although a recent systematic review of the literature published until April 2019 reported a similar yearly incidence per 100,000 inhabitants in Asia (1.31), Europe (1.37) and in America (1.00) [10]. The worldwide AIH prevalence in this paper was 17.44/100,000 inhabitants, being lower in Asia as compared to Europe and America [10]. This finding may reflect a more recent awareness of AIH in Asia.
Viral infections have been reported to be a risk factor for AIH, providing an insight in the pathogenetic mechanism of molecular mimicry, whereby immune responses to pathogens are redirected towards structurally similar self-antigens [29]. This has been best described in AIH-2, in which an amino acid sequence of the target autoantigen CYP2D6 is shared in common with sequences of hepatitis C virus proteins, and other viruses belonging to the herpesvirus family [1]. Moreover, anti-LKM1 is detected in up to 10% of HCV infected subjects, with a tendency to disappear after HCV clearance [30]. Exposure to drugs, particularly nitrofurantoin, minocycline, anti-tumor necrosis factor alpha (TNFα) and statins, but also to herbal supplements, in predisposed subjects, may cause drug-induced liver disease (DILI) mimicking AIH (see below) [31].
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