Activated B cells

January 18, 2018 | Author: Anonymous | Category: Science, Health Science, Immunology
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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

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.

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