Welcome to Immunology Course IMMUNOLOGY Prof. dr Vera Pravica Prof. dr Dušan Popadić Doc. dr Miloš Marković Assist. dr Emina Savić imunologija@med.bg.ac.rs Tel. 3643-236 Facebook: Antitelija Limfocitic Advice • for successful learning • and passing the exam Immunology • independent subject (separated from Microbiology) • winter semester • 45 hours during 15 week Seminars (20) Lectures (15) Labs (10) Seminars, Labs and Lectures are integral parts of the course Student are allowed to be absent on seminar or lab twice during the semester Textbook Basic Immunology: Functions and Disorders of the Immune System - Authors: Abbas AK, Lichtman AH. - Publisher: Elsevier - 3rd edition updated, 2011 .ppt presentations and authorised supplementary material (available on web site) Continuous assessment Activity during the course (seminars, labs and lectures) through activity points Presence on lectures noted separately Colloquium – divided in three separate mini-tests after every 4 weeks (5th, 9th and 13th week) Final test Colloquium Test (multiple choice – 1 correct answer out of 4) It consists of 30 questions in total (divided into 3 mini tests with 10 questions each) - first: in the 5th week (first 4 chapters from the textbook) - second: in the 9th week (chapters 5 to 8) -third: in the 13th week (chapters 9 to 12 plus immunological methods and vaccines) 1 point for each correct answer (max 30 points) 15 minutes per mini test Final test 70 points in total consists of: • 20 multiple choice questions with one correct answer out of four (2 points for each correct answer, max. 40 points) • 5 fill-in questions where correct word should be filled in the blanks (max. 20 points) • 2 questions that require short answers up to five sentences (max. 10 points) Threshold for passing the final test is 36 points (50% plus 1) Final mark in Immunology For the passing of the Immunology exam the minimum of 51 points (out of 100) should be collected on condition that the 50% of points plus one (minimally 36) has been reached in the final test Note: If the student collected less than 15 points in colloqium (i.e. 50%), he/she must perform better than 36 in the final test 100 points in total 51-60 6 (six) 61-70 7 (seven) 71-80 8 (eight) 81-90 9 (nine) 91-100 10 (ten) Activity points (max. 10 points) are added only if the minimum of 51 points has been reached Introduction to immune system • Innate and adaptive immunity • Types of adaptive immunity • Properties and phases of adaptive immune response • Central and peripheral lymphoid organs • Lymphocyte recirculation INNATE (Natural) (Native) ADAPTIVE (Aquired) IMMUNITY Principle mechanisms of innate and adaptive immunity Principle mechanisms of innate and adaptive immunity The most important cells of the immune system Chain of events in infection Pathogen(s) enter(s) tissue Pathogen(s) enter(s) tissue Pathogen(s) enter(s) tissue Macrophages recognize (and eliminate) pathogens Macrophages recognize (and eliminate) pathogens Macrophages recognize (and eliminate) pathogens Inflammation is induced and PMNs attracted Inflammation is induced and PMNs attracted Antigen-presenting cells (APCs) capture antigen(s) Antigen-presenting cells (APCs) capture antigen(s) APCs migrate to draining lymph node APCs migrate to draining lymph node APCs migrate to draining lymph node APCs migrate to draining lymph node APCs migrate to draining lymph node APCs migrate to draining lymph node APCs migrate to draining lymph node APCs migrate to draining lymph node APCs migrate to draining lymph node T cells are activated by APCs T cells are activated by APCs T cells are activated by APCs B cell are activated (helped by T cells) B cell are activated (helped by T cells) B cell are activated (helped by T cells) Activated B cells (plasma cells) produce antibodies (Abs) Activated B cells (plasma cells) produce antibodies (Abs) Activated B cells (plasma cells) produce antibodies (Abs) Activated B cells (plasma cells) produce antibodies (Abs) Activated T cells and Abs leave lymph node... ... enter blood stream and... ... enter blood stream and... ... migrate to site of infection ... migrate to site of infection ... migrate to site of infection Activated T cells stimulate phagocytes Activated T cells stimulate phagocytes Activated T cells stimulate phagocytes Activated T cells stimulate phagocytes Abs neutralize pathogens and stimulate phagocytes Abs neutralize pathogens and stimulate phagocytes Abs neutralize pathogens and stimulate phagocytes Abs neutralize pathogens and stimulate phagocytes Abs neutralize pathogens and stimulate phagocytes Pathogen is eliminated http://instruction.cvhs.okstate.edu/vmed5253/immunobiology.swf Principle mechanisms of innate and adaptive immunity Mechanisms of adaptive immunity - acquired throughout a lifetime of an individual - result of previous contact with pathogen - present in vertebrates Properties of adaptive immunity - diversity and specificity - memory - clonal expansion - specialization - autotolerance - stimulation of mechanisms of innate immunity Types of adaptive immunity Phases of adaptive immune response Types of lymphocytes Lymphoid organs Lymph node structure Lymph node structure Recirculation of T lymphocytes The morphology of the spleen Introduction to immune system • Innate and adaptive immunity • Types of adaptive immunity • Properties and phases of adaptive immune response • Central and peripheral lymphoid organs • Lymphocyte recirculation 1. Innate immunity is also called a. phagocytes and NK cells 2. Mechanisms of innate immunity mediate b. humoral and cellular immunity 3. First line of defence of innate immunity is provided by c. B and T lymphocytes 4. Cells of innate immunity are d. natural or native immunity 5. Cells of adaptive immunity are e. diversity, specificity and memory 6. Types of adaptive immunity are f. 7. Important properties of adaptive immune cells are g. early defence against infectious agents 8. Human central (primary) lymphoid organs are h. epithelial barriers 9. Human peripheral (secondary) lymphoid organs are i. peripheral lymphoid organs j. lymph nodes, spleen and MALT 10. Primary adaptive immune response begins in 1._____ 2._____ d. g. 3._____ 4._____ h. a. bone marrow and thymus 5._____ 6._____ 7._____ c. b. e. 8._____ 9._____ f. j. 10.____ i.