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Hypersensitivity
Types and Reasons behind
39
Agriculture
Graduate
03/26/2012

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Cards

Term
Type I Hypersensitivity Actions
Definition
Immune mediated- Th2 cells induce B cells to produce IgE antibodies which when restimulated by antigen leads to degranulization of mast cells
Term
Anaphylaxis
Definition
Edema in larynx, hypotension, airway obstruction, vascular dilation- Type I
Term
Food allergy
Definition
Increase peristalsis- Type I
Term
Asthma
Definition
Broncho constriction and mucous secretion- Type I
Term
Rhinitis
Definition
increased mucus secretion (IL-13)
Term
IL-4 an IL-13
Definition
Stimulate B-Cell switch to IgE plasma cells
Term
IL-5
Definition
released from mast and Th2 cells and activates eosinophils
Term
Type 2 Hypersensitivity Action
Definition
Anti-body mediated reaction- IgG and IgM antibodies against tissues bind neutrophils and macrophages to activate complement system and leads to destruction of tissue
Term
AI Hemolytic Anemia
Definition
Type II against Rh blood group
Term
AI Thrombocytopenic Purpura
Definition
Type II against platelet GpIIB-IIIA---> bleeding
Term
Pemohigus Vulgaris
Definition
Type II against epidermal cell proteins---> bullae
Term
Goodpasture Syndrome
Definition
Type II against basement membrane of glomerulu and lung alveolar
Term
Acute Rheumatic Fever
Definition
Type II- streptococcal cell wall antigen cross reacts with heart
Term
Myastenia Gravis
Definition
Type II AI against nicotinic ACH receptors
Term
Grave's Disease
Definition
Type II against TSH receptors leading to hyperthyroidism
Term
Pernicious Anemia
Definition
Type II AI against gastric parietal cells and loss of intrinsic factor
Term
Type III hypersensitivity actions
Definition
Immune complex deposits in blood vessels mainly, activates complement and phagocytosis
Term
SLE
Definition
Type III- vasculitis, arthrisis, nephritis
Term
Poststreptococcal glomerunephritis
Definition
Type III causing nephritis
Term
Polyarteritis nodosa
Definition
Type III against Hep. B antigent leading to vasculitis
Term
Serum Sickness
Definition
Type III- protein antigens given from a serum of another person leads to vasculitis, nephritis, and arthritis.

TX for snake bites and rabies expose
Term
Arthus Reaction
Definition
Type III- proteins injected into the subcuatneous skin leading to vasculitis of the skin
Term
Treatments for Type II and III
Definition
Plasmapheresis, antibody against CD20 found on B cells
Term
Type IV hypersensitivity
Definition
CD4 and CD8 T cells activated by antigens, more organ specific than systemic
Term
CD4 T cells
Definition
Inflammation due to cytokine release
Term
CD8 T cells
Definition
cell lysis and tissue injur
Term
IFN-gamma
Definition
activates macrophages and is released due to Th1
Term
Th17
Definition
Recruits leukocytes and neutrophils
Term
Diabetes Type I
Definition
Type IV with impared glucose metabolism
Term
RA
Definition
Type IV due to PTPN22/HLA-DR4
Term
MS
Definition
Type IV against myelin CD25 genes
Term
Chrones Disease
Definition
Type IV against intestinal microbes- NOD2 gene
Term
Poision Ivy
Definition
Type IV leading to rash
Term
TB
Definition
Type IV granulomatous inflammation
Term
Viral Hepatitis
Definition
Type IV against viral proteins with hepatocyte death
Term
Toxic Shock Syndrome
Definition
Type IV overactivation of T cells of different specificities leading to shock and fever
Term
Tx inflammation of type IV
Definition
corticosterioids
Term
Tx for cytokines in IV
Definition
antagonists of TNF
Term
Tx for IV that inhibits T cell response
Definition
Cyclospronine
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