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Welcome to Immunology Course IMMUNOLOGY Prof. dr Vera Pravica Prof. dr Dušan Popadić Doc. dr Miloš Marković Assist. dr Emina Savić [email protected] Tel. 3643-236 Facebook: Antitelija Limfocitic Basic terminology Immunitas (lat.) protection, immunity Immunis,-e (lat.) protected, immune Protection of senators against prosecution, tax payment and other civil duties in Antic Rome Immunity state of resistance to (infectious) disease Immunization process that results in immunity Immune resistant to (infectious) disease Immune system organs, tissues, cells and molecules involved in defence of the organism Immune response coordinated activity of the immune system components Basic function(s) of the immune system Defense against infectious agents Recognition and elimination of cancer cells viruses fungi protozoa bacteria helmints IMMUNOLOGY investigates - mechanisms of recognition of “danger” signal - mechanisms of activation and regulation of defense - effector mechanisms of destruction and elimination of pathogens and neutralization of their harmful products - mechanisms leading to immune response injurious to own tissue - possibilities for manipulation of the immune response INNATE (Natural) (Native) ADAPTIVE (Aquired) IMMUNITY Mechanisms of innate and adaptive immunity INNATE IMMUNITY ADAPTIVE IMMUNITY - filogenetically older - appears in vertebrates - immediate action - fully functional after certain period (days, weeks) - does not change throughout a lifetime - amplified upon re-exposure to the same pathogen - reacts predominantly against infectious agents - reacts against both infectious and non-infectious substances - early line of defence - later but more effective Mutually stimulating Principle mechanisms of innate and adaptive immunity Properties of adaptive immunity - diversity and specificity - memory - clonal expansion - specialization - autotolerance - stimulation of mechanisms of innate immunity Types of adaptive immunity - based on effector mechanisms cellular or cell-mediated (T-lymphocytes) humoral (B-lymphocytes) Types of adaptive immunity Types of adaptive immunity - based on effector mechanisms cellular or cell-mediated (T-lymphocytes) humoral (B-lymphocytes) - based on manner of activation active passive - based on mode of induction natural artificial NATURAL (infection) ACTIVE ARTIFICIAL (vaccination) IMMUNIZATION NATURAL (Mother-to-fetus antibody transfer) PASSIVE ARTIFICIAL (serum therapy) Simplified presentation of immune network