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Exam One Review
Elluminate session
76
Pathology
Graduate
02/15/2011

Additional Pathology Flashcards

 


 

Cards

Term
MHC
Definition
cluster of genes on chromosomes
Term
Atophy or Atophic people have a genetic disposition to which Type of Hypersensitiviy
Definition
Type I, IgE, Genetic predisposition: Have Th2 cells that secrete more IL-4 than normal to make IgE, have more mast and basophils, have more Fc receptors
Term
MHC Class II
Definition
located on B lymphocytes and Macrophages
Term
Immune response initiated CD4 only recognizes which antigens
Definition
protein or antigens on MHC class II proteins (macrophages, lympho)
Term
CD8 or CT cells only recognize antigens on which cell?
Definition
Class I
Term
Type III Hypersensitivity are formed where and located where?
Definition
Antigen/antibody complexes are formed in circulation and deposited in tissues: elicit inflammatory response.
Term
Type III tissue response: What is phase 1?
Definition
antibody/antigen formation: Normal occurrence
Term
What is phase 2 of Type III hypersensitivity?
Definition
Complex Deposition: PATHO part, size and charge of complexes, affinity to antigens in tissue
Term
What is phase 3 of Hypersensitivity III
Definition
Inflammation (10 days after antigen)
IgG activates complement of C1
Term
Histamine is released from what cell?
Definition
Mast cells, basophils, platelets, basophils
CLASS I hypersensitivity
Term
What does histamine do to vessels?
Definition
Vasodilation
Term
Type IV Hypersensitivity is mediated where?
Definition
T cell mediated, causes tissue injury (poison iv)
Term
What are the two types of Type IV Hypersensitivity
Definition
1. Delayed: Activates T4 lymphocytes (Th1), inflamm response, phagocytes cause tissue injury TB tine test
2. Direct cell cytotoxicity: T8 lymphocytes kill antigen bearing cells, Class I (autoimmunity, transplant)
Term
cyclooxygenase
Definition
PPT: action/counter action
Prostag: VD pain
Prostacy: VD, platelet aggretation
Thromboxane: VC, platelet aggre
Term
What does thromboxane do? Important for cardiac system
Definition
Vasoconstriction, promotes platelet aggregation
Term
If NSAIDS and ASA blocks oxy pathway, then it doesn't block the Lipoxygenase, so what will happen?
Definition
will cause vasoconstriction and bronchospasm
Term
Leukotrines will cause what?
Definition
bronchospasm in asthma
Term
Complement system are activated by?
Definition
antigen/antibody will activate at C1
C1 also by plasmaleptin and Plasmin
Term
Functions of C system
Definition
C3b:opsonin calls over the macrophages to get to work
3a,4a, 5a, anaphylatoxins: activate mast cells
6-9 forms a MAC attack: pores
Term
macrophages kill cells how?
Definition
phagocytosis
Term
How is the kinin system activated?
Definition
Hageman factor XII, bradykinin causes pain
Term
Histamine
Definition
vasoDilation, inc vascular permeability, endothelial activation
Term
Serotonin
Definition
VasoDilation, increased vascular perm
Term
Prostaglandins
Definition
vasoDilation, pain, fever, platelet aggregation
Term
Leukotrienes
Definition
Increased vascular permeability, chemotaxis, leukocyte adhesion, activation
Term
Platelet activating factor
Definition
vasodilation, increased vascular permeability, leukocyte adhesion, chemostoxis
Term
Reactive oxygen species
Definition
killing of microbes, tissue damage
Term
Nitric oxide
Definition
Vascular smooth muscle relaxation, kills microbes
Term
Macrocytic
Definition
not sufficient product so cells can't mature
Term
Microcytic
Definition
not sufficient product to develop a cell
Term
Normalcytic-cells lost to hemolysis
Definition
cells destroyed in the spleen
Term
Cytokines (TNF, IL-1, ex)
Definition
Local endothelial activation (adhesion molecules), systemic acute-phase response, in severe: septic shock)
Term
Hereditary sperocytosis
Definition
sperocytes w/o central color, Howell-Jolly bodies
Term
G-6 PD
Definition
spherical cells, different shapes and sizes, Heinz bodies and bite cells
Term
Chemokines
Definition
chemotaxis, leukocyte activation
Term
Thromboxane
Definition
Vasoconstriction, promotes platelet aggregation
Term
What is the only chemical mediator that causes vasoconstriction
Definition
Thromboxane
Term
proliferic neoplasm and lym
Definition
neoplasm of immature B cell
Term
neoplasm of mature B cells
Definition
cells are already circulating
Term
General char of neoplasms and leukemias
Definition
proliferation of a single cell
Term
dopamine
Definition
synthetic anti-oxidant
Term
Acute lymphomas
Definition
undiff or immature cells
Term
Patho effects of ROS
Definition
lipid peroxidation of lipids in plasma membrane, OH outside cell is worse and will alter membrane, inside cell: alter DNA structure and change genetic code
Term
antioxidants
Definition
attack nucleic acids, always produced, protects body against damage from chemical reactions can be naturally occuring or synthetic
Term
leukemias
Definition
occur earlier, as in marrow
Term
Pre-B, T cell neoplasm, located where?
Definition
Pre-B in bone marrow
Term
Acute lymphocytic leukemia
Definition
Common in young adults, children, blast cells, acute and quick
Term
Chronic lymphocytic leukemias
Definition
Mature cells, older adults, can't mature into working cells
Term
Smudge cell
Definition
Chronic lymphoma leukemia
Term
iNOS
Definition
problem: responsible for NO inflamm reaction
Term
Type I hypersensitivity
Definition
IgE
Term
Type II
Definition
Humerol or B cell, antigen/antibody response on cell surface: 3 types of cells, can or can't be phagocytosed, releases cytokines and cause cell injury
Term
Type III
Definition
reacts against surface receptors, antigen/antibody complex that is in circ and is deposited
Term
Type IV
Definition
T cell becomes involved when tissue is exposed to antigen
Term
Kinen
Definition
reactivates Factor XII, amplification of initial stimulus, activates fibrinolytic system that produces plasmin
Term
Describe Intrinsic Pathway
Definition
XII to XIIa to fibrinolytic to produce plasmin to activate comp system at C3 to opsonin and phago
Term
fibrinolytic system
Definition
breakdown clots
Term
antithrombin III
Definition
acts like libronox and binds to heparin molecules
Term
Type I
Type II
Type III
Type IV
Definition
IgE
Humoral
Immune-complex
Cell-mediated IHICC
Term
Lupus
Definition
Both T and B tolerance to self-antigen, B cells produce one thing (lipid antibodies), T cell failure to recognize so B cells secrete antibody.
Term
Lupus
Definition
not recognizing Intercellular: nuclear, increase ANA, smith antigen, antibodies react to what's happening inside cell, altered display of antigen
Term
apoptosis
Definition
membrane remains intact, breaks into particles and membrane dissolves so inside of cell unexposed and open to membrane and causes self reaction
Term
Lupus
Definition
antigen/antibody complex is deposited in kidneys, pulmonary system
Term
Sjogren's syndrome
Definition
auto-immune against epithelial cells, no tears and no saliva. CD4 cell not recognizing self, activates TH2
Term
Sclerosis or scleroderma
Definition
excessive collagen deposition, so therefore more fibrin upregulated. T4 doesn't recognize antigen, Th1 problem making cytokines
Term
ankylosing spon
Definition
CD4 T cell
Term
Rheumatoid arthritis
Definition
CD4 reaction initiates B cell production of autoantibody Rheumatoid factor in 80%, not 20% so not always diagnostic. MUST have: don't have CD4 that recognizes self
Term
Rheumatoid arthritis
Definition
too much inflammation in joint, TNF alpha inhibitors can work
Term
Type II mechanisms: (3 types)
Definition
Opsonization and Phagocytosis
Inflammation and Injury
Cellular Dysfuction
Term
What initiates immune response
Definition
Helper T cells
Term
Type II Hypersensitivity: Opsonization process:
Definition
antibody binds to cell surface, C3 opsonizes cell surface: phago, cell loss (transfusions)
Term
Type II mechanism Inflammation and Injury
Definition
antibody binding to antigen at C1, activation of neutrophils, causes tissue injury, (glomerulonephritis)
Term
Type II mechanism of cellular dysfuction
Definition
antibodies directed against cell surface receptors, impairs/dysregulates receptor function. (graves)
Term
IL-2 important part of immune system why?
Definition
Helps helper T cell mature into matures onto imprinted Th cell into 1 and 2
Term
Th1
Definition
goes down CD8 line, primary pathway for inflammatory cytokines and keeps response going. and interacts with Cytotoxic T cells
Term
Th2 cells
Definition
B cells, TH2 secretes IL 4,5,6, 13 involved in antibody response. KNOW,helps B cell become a plasma B cell
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