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GHY3
Hi Yield goljan pt3
| Question | Answer |
|---|---|
| Tumor acute inflammation | swelling; ↑ vessel permeability (histamine) |
| Dolor acute inflammation | pain; bradykinin, PGE |
| Acute inflammation | neutrophil dominant; ↑ IgM |
| Initial vessel events | transient vasoconstriction → arteriolar vasodilation → ↑ venular permeability |
| Neutrophil rolling acute inflammation | due to selectins |
| Integrins | neutrophil adhesion molecules; C5a and leukotriene B, activate; neutrophil margination |
| CD11/CD18 | markers for integrins |
| Endothelial cell adhesion molecules | activated by IL-1 and TNF |
| ICAM | intercellular adhesion molecule |
| VCAM | vascular cell adhesion molecule Leukocyte adhesion molecule defect |
| Activation neutrophil adhesion molecules | neutrophilic leukocytosis; corticosteroids |
| Activation neutrophil adhesion molecules | neutropenia; endotoxins |
| Chemotaxis | directed movement; C5a and LTB4 |
| Opsonizing agents | IgG, C3b; enhance phagocytosis |
| Neutrophils, monocytes, macrophages | receptors for IgG, C3b |
| O2-dependent MPO system | most potent microbicidal system; neutrophils, monocytes |
| ProductionofsuperoxidefromO2 | NADPH oxidase with NADPH cofactor; produces respiratory burst |
| Nitro blue tetrazolium (NBT) | test for respiratory burst |
| Superoxide dismutase | converts superoxide to peroxide |
| Myeloperoxidase | lysosomal enzyme that combines peroxide + Cl to form bleach (HOCl) |
| Microbicidal defects | chronic granulomatous disease childhood (XR), myeloperoxidase deficiency (AR) |
| Chronic granulomatous disease | absent NADPH oxidase; no respiratory burst |
| Chronic granulomatous disease | Staphylococcus aureus not killed (catalase positive) |
| Chronic granulomatous disease | Streptococcus killed (catalase negative) |
| Myeloperoxidase deficiency | AR; respiratory burst present; no bleach produced |
| Opsonization defect | Bruton’s agammaglobulinemia (XR, decreased IgG) |
| Phagocytosis defect | Chediak-Higashi (see cell injury); also has defect in microtubule polymerization |
| COX inhibitors | non-steroidals (non-selective), selective COX-2 inhibitors |
| PGE2 | vasodilation, fever |
| PGI2 | vasodilator; prevent platelet aggregation |
| Nitric oxide | vasodilator; FR gas from conversion arginine to citrulline |
| IL-1 and TNF | fever, synthesis acute phase reactants in liver, leukocytosis |
| IL-6 | stimulated by IL-1; stimulates synthesis of acute phase reactants |
| Acute phase reactants | fibrinogen, ferritin, C-reactive protein |
| Bradykinin | kinin produced in conversion of factor XII to factor XI |
| Bradykinin | pain, vasodilator, vessel permeability; cough/angioedema, ACE inhibitors |
| Anaphylatoxins | C3a and C5a; directly stimulate mast cell release of histamine |
| Prostaglandin I2 | synthesized by endothelial cells; vasodilator, inhibits platelet aggregation |
| Lipoxygenase | hydroxylation of arachidonic acid |
| Zileuton | inhibits lipoxygenase |
| Zafirlukast, montelukast | block lipoxygenase receptor |
| LTC4, -D4, -E4 | bronchoconstrictors |
| TXA2 | synthesized by platelets; platelet aggregation, vasoconstriction, bronchoconstriction |
| Dipyridamole | inhibits thromboxane synthase |
| Corticosteroids | inhibits phospholipase A2, activation neutrophil adhesion molecules |
| Corticosteroids | neutrophilic leukocytosis, lymphopenia, eosinopenia |
| Fever | right shift OBC; hostile to bacterial/viral replication |
| Chronic inflammation | monocyte/macrophage; ↑ IgG; repair by fibrosis |
| Granuloma | cellular immunity; macrophages interact with TH1 class cells (memory cells) |
| Positive PPD | Langerhan’s cells process PPD and interact with TH1 class cells |