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Immunology
Immunology lecture
58
Medical
Graduate
11/02/2008

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Term
Immune system major function is to eliminate...
Definition
microbes, neoplasms, transplants
Term
which immune system cells are found in the blood?
Definition
neutrophils, and monocytes
Term
Macrophages are found where?
Definition
lung, liver, kidney, CNS
Term
Cytokines are secreted by what?
Definition
monocytes or lymphocytes
Term
Where are B cells derived? what type of immune cell are these?
Definition
Bone marrow, lymphocyte
Term
The lymphocytes that are derived from the thymus are called what?
Definition
T Cells
Term
what is the 1st immunogloblin release after exposure?
Definition
IgM
Term
what are the 3 broad types of lymphocytes
Definition
T cell, B cell, NK cells
Term
Which is the only immunoglobulin to cross placenta?
Definition
IgG
Term
IgG increase in amount with the descrease of what?
Definition
IgM
Term
what are the most prevalent (esp memory response) if IG?
Definition
IgG
Term
IgA is found where?
Definition
mucous membranes
Term
IgE is found where where and plays a major part in what?
Definition
respiratory and GIT...allergies
Term
how do T cells recognise Ag
Definition
they dont have Ig but the recognise by recpetor and other adhesion molecules
Term
Where are HLA loci found? (chromosomal)
Definition
chromosome 6
Term
what are the 4 principle HLA loci?
Definition
CLass 1, class 2, B cells, and T cells
Term
B cells will rarely respond to soluble Ag, and generally recognise Ag when embedded with MHC... T or F
Definition
F, b cells can recognise soluble Ag. it is the T cells which have the mentioned characteristics. The recognise Ag-MHC
Term
what does class 2 MLA include?
Definition
HLA-D Locus, HLA-DR Locus, HLA-DQ locus
Term
how do class 2 HLA work?
Definition
present antigens from outside of the cell to T-lymphocytes. These particular antigens stimulate T-helper cells to reproduce and these T-helper cells then stimulate antibody producing B-cells, self-antigens are suppressed by suppressor T-cells
Term
the capacility to mount a humoral response is determined by what?
Definition
genetics
Term
IR genes regulate what?
Definition
  1.  T cell recognition of AG,
  2.  capacity of phagocytes to present Ag
  3.  B cell potential to produce Ab
Term
decreased control of humoural immune responce will resil in what?
Definition
un regulated Ab production leading to self destruction
Term
where is the imcompatability in Rhesus incompatibility
Definition
D group
Term
what is the rhesus status of mother and child in rhesus compatability?
Definition
mother Rh-ve (dd) and she is carrying a Rh+ve foetus (Dd or DD)
Term
how do you prevent complications of Rh incompatability?
Definition
give mother Rh immunoglobin at times of bleeding during pregnancy...
Term
how is extent of haemolyis assessed in Rh incompatability
Definition
amniocentesis, fetal Hb, US
Term
Spleen is major site of Ab synthesis? T F
Definition
T
Term
The major phagocytic organ is the liver, T F
Definition
false this is the spleen
Term
removing the spleen is one way of decreasing the risk of overwelming bacterial infectiosn because the cell mediated immunity is not trigger now...T F
Definition
false, that was gibberish and the a splenectomy will increase the risk of overwelming bacterial infections because it is very important in Ab synthesis and phagocytosis
Term
which is more common primary or secondary immunodeficiency?
Definition
secondary
Term
whtare are some causes of impaired immune system in a previously normal individual?
Definition
Metabolic Dz, immunosuppression, infection, haematological Dz, surgery/trauma
Term
what are 2 traumatic causes of secondayr immunodeficiency
Definition
burns, splenectomy
Term
3 metabolic causes of immunodeficiency
Definition
DM, malnutrition, Vitamin/mineral deficiency
Term
primary deficiencies of the immuno system are caused by traumtic damage to necessary organs, and are not acquired as an an=utoimmune reponse T or F
Definition
F, they are inherited
Term
4 groups of primary immunodeficiency are
Definition
  • B cell: infections
  • T cell: Viral
  • Phagocytic
  • Complement disorders: causing SLE or infections such as neisseria
  • Term
    hayfever is called what?
    Definition
    allergic rhinitis
    Term
    hayfever is called what?
    Definition
    allergic rhinitis
    Term
    the Ag-Ab reaction in type 1 hypersensitivity causes what?
    Definition
    release of potent vasoactive and inflammatory mediators (eg histamine) leading to vasodilation and increase capillary permeability
    Term
    Atopic diseases range from what?
    Definition
    1. allergic rhinitis 
    2. conjunctivitis
    3. asthma
    4. atopic dermatitis
    5. systemic anaphylaxis
    Term
    which immunohglobin is implicated in type 1 hypersensitivity
    Definition
    IgE
    Term
    hives are called what medically, and what do they involve?
    Definition
    urticaria, type 1 hypersensitivity, with a local wheal and erthema in dermis
    Term
    Angiooedema is what?
    Definition
    large odematous areas, associated wiht diffuse swelling of loose connective tissue
    Term
    common places of angioodema
    Definition
    dorsum of hands, eyelids, lips, genitals, mucous membranes
    Term
    what is a problem with angiooedema?
    Definition
    can cause respiratory distress
    Term
    what is the Rx of a food allergy?
    Definition
    avoidance, desensitisation, anti-histamines
    Term
    Pernicious anaemia is caused by what type of hypersensitivity reacton?
    Definition
    typeII
    Term
    a cytotoxic, reaction from Ab acting with antigenic cellular components is characteristic fo what hypersentivity
    Definition
    type II
    Term
    what are 3 disorders of Type III hypersensitivity
    Definition
    acute glomeronephritis, RA, Serum sickness
    Term
    Type II hypersensitivy is caused what
    Definition
    antibody dependent cytotoxic
    Term
    In type III hypersensitivity.... Ab-AG complex activitate complement, this activites (what???) leading to acute inflammation
    Definition
    release of vasoactive substances,which stimulate and activate PMN and other phagocytyes leading to
    Term
    PMN stands for what?
    Definition
    Polymorphonuclear Leucocytes
    Term
    Complex mediated hypersensitivity is what type of hypersensitivity
    Definition
    Type III
    Term
    Type Iv hypersensitivity is called what, and mediated byb wwhat?
    Definition
    Cell mediated (delayed type) hypersensitivity.... mediated by sensitised T cells
    Term
    contact dermatitis is what type of hypersensitivity?
    Definition
    type IV
    Term
    whatre are 4 example of an autoimmune disorder?
    Definition
    Hashimotos thyroiditis
    SLE, Good pasture disease, graves disease
    Term
    SLE is caused by what...
    Definition
    antinuclear Ab, Anti DNA ab
    Term
    goodpastures is a disorder, what ab?
    Definition
    anti basement membrane Ab
    Term
    goodpastures is characterised by what?
    Definition
    rapid destruction of kidneys and lung haemorrage
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