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Immunology (Hypersensitivity types (Type II (cell destruction(opsonize)…
Immunology
Hypersensitivity types
Type I
Anaphylactic and atopic : IgE on mast cell&basophils,histamine
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Type III
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serum sickness,Arthus reaction,SLE,PAN,PSGN
Type IV
contact dermatitis, Graft vs host disease
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T-cell
function
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CD4+T cell(MHC2) ช่วย B cell สร้าง Ab, cytokines กระตุ้น phagocyte&leukocyte
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Helper T cell
Th1 cell
หลั่ง IL2 IFN-g กระตุ้น macrophage, cytotoxic T cell
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Th2 cell
หลั่ง IL4 5 6 10 13 กระตุ้น Eo for parasite, ให้ B-cell สร้าง IgE
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Cytotoxic T cell
Apoptosis kill virus-infected cell,tumor,donor graft cell
release Perforin,granzyme B
Cytokines
Macrophage
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TNF-a - WBC,vascular leak
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INF-g : granulomatous inflam, staph enterotoxin
Structures
primary organ
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Thymus (T cell mature)
Hypoplasia in DiGeorge syndrome, SCID
Thymoma asscoc. MG,SVC syndrome
Secondary organ
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Spleen
T cell&B cell in white pulp, Macrophage(กำจัด Encapsule bact)&special B cell&APC in marginal zone
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vaccine : Pneumococcal, HiB, meningococcal
Lymph node
Function
Macrophageกรอง, เก็บ B & T cell, immune response activate
3 ชั้น
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Medulla
Lymphocyte ,plasma cell, reticular cell, macrophage
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Drainage : Hilar(lung),Paraaortic(kidney,ovary,uterus,testis),Superficial inguinal(scrotum,vulva,anal canal)
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Immunity
Innate
Neutrophil, macrophage, monocyte, Dendritic cell, NK cells
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Recog : TLRs ต่อ PAMPs ; LPS(Gr.- bact),Flagellin(bact),Nucleic acid(virus)
หลั่ง Lysozyme, Complement, CRP, Defensins
Adaptive
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High specific, long period ,memory response
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Immunity
Passive
ได้รับจากAb, rapid แต่HL3wk
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Active
Expose foreign Ag , ช้าแต่ตลอดไป
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Vaccine
Live
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BCG,influenza,MMR,polio,rotavirus,varicella,yellow fever
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MHC
MHC1
ลักษณะ 1 long 1 short จับที่ TCR,CD8
express on nucleated cell, APC, Plt
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