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General Pathology Chapter 2
Robbins and Contran Pathology
69
Pathology
Graduate
08/30/2011

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Term
Is edema a transudate or exudate?
Definition
can be either
Term
what are the contents of pus
Definition
mostly neutrophils, dead cell debris, and often microbes
Term
empyema
Definition
pus in a body cavity, and if not otherwise stated, in the pleural cavity
Term
stasis
Definition
slower blood flow
Term
margination definition
Definition
wbc accumulate along the vascular endothelium
Term
immediate transient response
Definition
formation of gaps in the VENULES after exposure to mediator (**histamine**, bradykinins, leukotrienes, substance P ect) leading to phophorylation of contractile proteins allowing for cells to contract and separation of intercellular junctions
Term
Immediate sustained response
Definition
leakage after injury in all levels of circulation (arterioles, venules, capillaries)
Term
During inflammation, what occurs to the lympatic vessels?
Definition
they proliferate to handle the increased load
Term
lymphangitis
Definition
inflammation of the lymphatic channels
Term
lymphadentitis
Definition
inflammation of the draining lymph nodes
Term
extravastion
Definition
WBC movement from inside a vessel to interstitial tissue
Term
pavementing:
Definition
endothelium fully lined by WBCs
Term
B1 integrins
Definition
VLA-4 bind to VCAM-1
Term
B2 integrins
Definition
LFA-1 and Mac-1 bind ICAM-1
Term
Leukocyte adhesion deficiency type 1 (LAD1)
Definition
defects in the B2 chain of the B2 integrins
Term
Leukocyte adhesion deficiency type 2 (LAD2)
Definition
absence of sialyl-Lewis X, the ligand for E-selectin
Term
What molecules stimulate the redistribution of P-selectin to the cell surface?
Definition
Histamine** thrombing and platelet activating factor
Term
What induces the expression of adhesion molecules on endothelial cells (e.g. ICAM and VCAM)
Definition
TNF and IL-1 (released from macrophages, mast cells, and endothelial cells)
Term
Where is P-selectin stored within an endothelial cell?
Definition
Weibel-Palade bodies
Term
Where does diapedesis normally occur?
Definition
Normally in the venules
Term
What type of WBC predominates in viral infections?
Definition
lymphocytes
Term
What is different about a Pseudomonas infection?
Definition
neutrophils prevail for 2-4 days
Term
Toll-like receptors
Definition
receptors on leukocytes that respond to substances only found on the microbe
Term
What do g-protein coupled receptors on leukocytes do?
Definition
recognize short peptides which contain N-formylmethionyl residues that allow it to migrate through endothelium and produce microbicidal substances
Term
What are the major opsonins?
Definition
IgG and C3b
Term
Chediak-Higashi syndrome
Definition
defective fusion of phagosomes and lysosomes in phagocytes
results in neutropenia, defective granulation, and delayed microbial killing...giant granules present in leukocytes, and they have an increased susceptibility to infections
Term
Chronic granulomatous disease
Definition
defects in genes encoding components of NADPH oxidase
granulomas form to compensate for inadequate neutrophil activity
recurrent bacterial infections
Term
Where is cox-1 found?
Definition
produced in most tissues for homeostatic functions as well as inflammation functions
Term
where is cox-2 found?
Definition
inflammatory cells only
Term
what does 5-lipoxygenase produce?
Definition
5-HPETE (which produces Leukotriene B4 and LTC/d/e4
Term
what does 12-lipoxygenase produce?
Definition
lipoxins A4 and B4
Term
aspirin
Definition
irreversibile inhibits cox1 and cox2 inhibitors
Term
What are the 2 major cytokines of inflammation that are produced mainly by macrophages?
Definition
TNF and IL-1
Term
Acute Phase Response
Definition
Fever, loss of appetite, release of neutrophils into circulation, release of corticosteroids
Term
Primary (azurophil) granules on neutrophils
Definition
larger and more destructive, primarily release into phagosomes
myeloperoxidase
bactericidal factors
acid hydrolases
neutral proteases: elastase, cathepsin G
neutral proteases
Term
myeloperoxidase
Definition
H2O2 + CL= HOCl
Term
Secondary or Specific granules on neutrophils
Definition
smaller
lysozyme
collagenase
gelatinase
lactoferrin
plasminogen activator
histaminase
alkaline phophatase
Term
Classic Pathway of Compliment
Alternate Pathway of Compliment
Lectin Pathway of compliment
Definition
-fixation of C1 to antibody combined with antigen
-triggered by microbial surface molecules, polysaccharides, cobra venom
-lectin binds to carbohydrates on microbes directly activating C1
Term
What are the components of the membrane attack complex?
Definition
C5b and C6-9
Term
What binds to protease-activated receptors?
Definition
Thrombin. These receptors are expressed on platelets, endothelial cells, and smooth muscle cells
induces inflammation by:
-promoting recruitment and adhesion of leukocytes
Term
organization
Definition
conversion of dead tissue or exudate into fibrous tissue
Term
ulcer
Definition
local defect on the SURFACE of an organ or tissue produced by sloughing of inflammatory necrotic tissue
Term
atherosclerosis
Definition
toxic plasma lipid components induce chronic inflammation of blood vessel walls
Term
histiocytes
Definition
macrophages of connective tissue
Term
sinus histiocytes
Definition
macrophages of spleen and lymph nodes
Term
mast cells
Definition
found in connective tissue
anaphylactic reactions to food
degranulation of histamine and eicosanoids
Term
eiconosoids
Definition
product of cyclooxygenase
Term
epithelioid macrophages
Definition
enlarged and flattened, seen in granulomatous inflammation
Term
granuloma
Definition
a focal area of chronic inflammation with aggregates of epithelioid macrophages surrounded by a rim of lymphocytes
Term
Langhans type giant cell
Definition
nuclei are arranged around the periphery
Term
foreign body type giant cell
Definition
nuclei are scattered haphazardly
Term
pyrogens
Definition
stimulate prostaglandin synthesis in the hypothalamus, resetting the temperature set-point to a higher level
Term
C-Reactive protein
Definition
acute-phase protein, increase risk of MI
Term
If a patient has an increase ESR (erythrocyte sedimentation rate) what is this indicative of?
Definition
suggests an acute phase response
Term
acute phase response
Definition
plasma proteins made in liver that dramatically increase in response to inflammatory stimuli
Term
leukemoid reaction
Definition
WBC count of 40-100,000
Term
left shift
Definition
Term
left shift
Definition
more immature NEUTROPHILS enter bloodstream
Term
lymphocytosis is commonly seen in what type of infections
Definition
viral
Term
Leukopenia seen in what infectious diseases
Definition
typhoid fever and rickettsiae
Term
major basic protein
Definition
found in eosinophils, cytotoxic to many parasites
Term
what enzyme is deficient in chronic granulomatous disease?
Definition
NADPH oxidase
Term
what chemical mediator aids in the regulation of septic shock?
Definition
TNF
Term
what are the two main granules of neutrophils?
Definition
primary (azurophil) granules and secondary (specific) granules
Term
granzyme
Definition
serine proteases in CTLs that aid in the destruction of virally-infected cells
Term
where does thrombin bind on platelets, endothelial cells, and smooth muscle cells?
Definition
PARs (protease-activated receptors)
Term
what are the two sources of the fluid seen in serous inflammation?
Definition
plasma, mesothelial cells
Term
what causes immobilization of macrophages at the site of inflammation?
Definition
cytokines and oxidized lipids
Term
increased levels of what causes RBCs to form stack (rouleaux)?
Definition
fibrinogen
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