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42 Cards in this Set
- Front
- Back
Intrinsic pathway activates:
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Kininogen system leads to bradykinin
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B2-Integrins:
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neutrophil (CD11:18) adhesion molecules, activated by C5a and LTB4
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Delayed separation umbilical cord:
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selectin or CD11a:CD18 deficiency
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Opsonins:
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lgG and C3b
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Bruton's agammaglobulinemia:
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opsonization defect
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Chronic granulomatous disease:
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absent NADPH oxidase and respiratory burst
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MPO deficiency:
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normal respiratory burst, b/c have NADPH oxidase, cant kill bacteria b/c can't make bleach
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Thromboxane A2:
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Sources: Platelets, converted from PGH2 by thromboxane synthase. Functions: Vasoconstriction, platelet aggregation, bronchoconstriction.
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PGH2:
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major precursor of PGs and thromboxanes
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PGE2:
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vasodilation, pain, fever
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PGI2:
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vasodilation; inhibition of platelet aggregation
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LTB4:
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chemotaxis and activation of neutrophil adhesion molecules
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LTC4, LTD4, LTE4:
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vasoconstriction, increased vessel permeability, bronchoconstriction
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Bradykinin:
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Source: product of kinin system activation by activated factor XII. Functions: vasodilation, increased vessel permeability, pain, bronchoconstriction
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IL-1 (Cytokines):
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Function: initiate PGE2 synthesis in anterior hypothalamus leading to production of fever, activate endothelial cell adhesion molecules, increase liver synthesis of acute-phase reactants, increase release of neutrophilis from bone marrow
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Histamine:
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Source: Mast cells (primary cell), platelets, enterochromaffin cells. Function: Vasodilation, increased vessel permeability.
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Nitric Oxide (NO):
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Source: Macrophages, endothelial cells, Free radical gas released during conversion of arginine to citrulline by NO synthase. Function: Vasodilation, bactericidal, big in shock.
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Serotonin:
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Source: Mast cells, platelets (AA Tryptophan precursor). Functions: Vasodilation, increased vessel permeability.
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Fibronectin:
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key adhesion glycoprotein in ECM, Chemotactic factor attracts fibroblasts and endoth cells
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Angiogenesis:
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Vascular endothelial growth factor (VEGF) and basic fibroblast growth factor (FGF) are important in Angiogenesis
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Cell types in a granuloma:
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macrophages and CD4 helper T cells
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Epithelioid cells:
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macrophages activated by y-interferon from CD4 TH cells (pg 32).
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Growth Factors in tissue repair:
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Vascular endothelial cell growth factor (VEGF), Basic fibroblast growth factor (BFGF), Epidermal Growth factor (EGF), Platelet-derived growth factor (PDGF)
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Vascular endothelial cell growth factor (VEGF):
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Stimulates angiogenesis
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Basic fibroblast growth factor (BFGF):
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Stimulates angiogenesis
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Epidermal growth factor (EGF):
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Stimulates keratinocyte migration, Stimulates granulation tissue formation
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Platelet-derived growth factor (PDGF):
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Stimulates proliferation of smooth muscle, fibroblasts, endothelial cells.
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Hormones involved in tissue repair:
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Insulin growth factor-1 (IGF-1)
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Insulin Growth factor-1 (IGF-1):
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Stimulates synthesis of collagen, Promotes keratinocyte migration
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Genes controlling G1 to S phase:
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RB and TP53 suppressor genes
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BAX gene:
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activation by TP53 initiates apoptosis
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Laminin:
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key adhesion glycoprotein in basement membrane
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Lysyl oxidase:
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Cross-links a-chains; cofactor, vit. C and Cu are cofactors
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EDS:
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defects in type I and III collagen
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Zinc:
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cofactor in collagenase
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Glucocorticoids:
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prevent scar formation
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Keloids:
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excess type III collagen, converts to type I (cell turnover) leads to squamos cell carcinoma
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Brain injury:
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proliferation of astrocytes and microglial cells
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Corticosteroid effect in blood:
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increase neutrophils; decrease lymphocytes and eosinophils
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Increase ESR:
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increase fibrinogen, anemia
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CRP:
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marker of necrosis and disease activity
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Polyclonal gammopathy:
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sign of chronic inflammation; increase IgG
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