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Principles of Immunology by S.S.Eghbali,MD 5/10/1380
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IMMUNE SYSTEM Non specific IMMUNITY Specific Immunity
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Specific Immunity Humoral Immunitiy Cellular Immunity
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Humoral Immunity
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Cellular Immunity T CD4/TCD8 ratio Cytokines IL-2, G-IFN, IL-4,IL-5 CTL NK-Cells
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CELL IMMUNITY IS AFFECTED BY AGE Malnutrition Cancers Chronic diseases
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Immuno assays Precipitation Immunoassay Particle Immunoassay Radio Immunoassay Enzyme Immunoassay Chemiluminescent Immunoassay
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Precipitation Immunoassay
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A)Qualitative Single Immunodiffusion Double Immuno diffusion Immuno electro phoresis Electro Immuno Fixation B)Semi-Quantitative Single radial immunodiffusion Single dimension electro immunodiffusion (Rocket electrophoresis)
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Particle Immunoassay Hemaglutination e.g Treponema pal. Gelatin particle agglutination HBV,HCV,HIV Latex agglutination HCG
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Radio Immuno assay Competitive RIA Non competitive RIA (Sandwich or IRMA)
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Enzyme Immunoassay Colorimetric EIA Fluorescent EIA Chemiluminscent EIA
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PRESENTATION OF POSSIBLE IMMUNODEFICIENCY * Frequent bacterial infection * Unusually severe systemic reaction to a virus * Development of infection with an unusual organism such as fungus or protozoan * Systemic reaction following live virus vaccination * Family history of recurrent infections * Exposure to the human immunodeficiency virus.
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BASIC SCANNING IMMUNOLOGY STUDIES Complete blood count / differential Lymphocyte subpopulation analysis (numbers and percentages of T and B cells) by flow cytometry Lymphocyte activation in vitro to mitogens and microbial activators
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Serum immunoglobulins, including immunoglobulin subclasses if evidence of clinical infections with encapsulated bacteria. In some cases, immunoglobulin levels are normal but heterogeneous nonbinding antibodies are produced; thus, additional studies are needed.
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CONFIRMING AND FIRST-STAGE ANALYTICAL STUDIES * Radiograph for thymic shadow * Skin test * Natural Killer cell activity ( if child is 6 months or older) * Cytokine production in response to activation T-helper 1, T-helper 2 (IL-2, interferon-y, IL-4, and so on) * Mixed lymphocyte culture reaction with patient as stimulator and patient as responder * Response to immunization
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* Test for presence of age- appropriate specific antibodies * Naturally occurring antibody *Response to isohemagglutinins (anti- A and – B blood group substances) if patient has A, B, or O blood type * Test for adenosine deaminase and purine nucleoside phosphorylase enzyme deficiency
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ANALYTICAL AND IMMUNOREGULATORY STUDIES * Development of activation antigens during ersponse to stimulation, such as Tac antigen, transferrin receptor, up-regulation for MHC class II on T cells, soluble receptor, and so on * Early activation response (e.g., calcium channels)
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Immunoregulation Response to IL-1, IL-2, interferons Development of effector functions Immunoglobulin synthesis in vitro Cytotoxic T-cell activity Suppressor cell/factor analysis Gene activation, cell cycle analysis Response to immunization: de novo immunization
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