Shared Flashcard Set

Details

Terminology
cells, cancer, blood, genetics, immunology.
39
Nursing
Graduate
02/05/2012

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Term
Attenuated
Definition

Live viruses that are weakened: chickenpox, MMR. better for longterm

can cause infection in suppressed imm.

Term
Killed Vaccine
Definition

Hep A, polio, Flu vaccine.

increase risk of allergies; can proliferate in suppressed immune system.

Term
Plasmids
Definition

give bacteria superpower to resist against ABX. codes for enzyme cleaves abx or protein that pumps abx out of cells.

Bacteria share plasmids fast!

Term
Primary congenital immune deficiency
Definition

rare genetic anomaly, single gene mutation; sx appear withink 2yrs of life. (ear infections, diarrhea, bronchitis)

(Digeorge syndrome)

Term
Acquired (secondary) immune deficiency
Definition
MORE COMMON, happens in pregnancy, aging, immature babies, stress, malignancies etc.
Term

HIV

how it infects cells

Definition

PASS THROUGH

entrance inhibitor

*Reverse transcriptase (rna->dna)

integrase (combine)

*protease (chop up to send off)

(* available meds)

Term
symbiosis
Definition

benefits only humans (no harm to organism)

(normal flora in humans are made by eating food)

Term
mutualism
Definition

benefits human & organism

is a type of symbiosis

relationship=fitnes benefit

Term
opportunistic infection
Definition
normal flora is damaged due to excess abx usage (decreased human host resistance)
Term
mechanism of action
Definition
how the microorganism damage tissues
Term
infectivity
Definition
ability for pathogen to invade/multiply in the host.
Term
pathogenicity
Definition
ability of an agent to produce disease; success depend on invasion, communication, extent of tissue damage, virulence
Term
immunogenicity
Definition
ability of pathogens to induce an immune response
Term
toxigenicity
Definition
ability to produce toxins/endotoxin
Term
antigenic variation
Definition
infectious organism as protozoan, bacterium/virus alters its surface protein in order to invade host.
Term
antigenic drift
Definition

accumulation of mutations within antibody binding sites. to keep surviving (antibody doesnt recognize it)

flu a/b.

Term
antigenic shift
Definition
two or more strains of virus combine with mixture of the surface antigens of two or more original strains.
Term
gene shifting
Definition
switch mechanism activate (turn on)/turn off or adjust spec functions.
Term
exogenous pyrogens
Definition
little evidence that these produce fever
Term
endogenous pyrogens
Definition

released by host to cause fever.

cytokines interleukin 1&6.

 

raise temp through stimulation of prostaglandin in brain/peripheral.

Term
Glucogenesis is made in
Definition
liver and spleen.
Term
fever
Definition

kills microorganism, affect on growth/replication.

decreases iron/zinc/copper levels

lipolysis/proteolysis deprive bact of food.

lysosomal breakdown (autodestruction)

Term
toxinoids
Definition

purified toxins that been chemically detoxified.

diptheria cholera/tetanus.

Term
virus
Definition

no organelles

capsid shell protein protection

various shapes.

intracellular parasites.

Term
prostaglandins
Definition

long chain unsaturated fatty acids made by cyclooxygenase.

groups(D E A F B)

E1 E2=vascular permability/smooth muscle contraction/release histamine, lysosomal enzymes from neutrophils.

Term
aspirin/NSAIDS
Definition
block E series or prostaglandin and other arachindonic acid. inhibit inflammation
Term
leukotrienes
Definition

mast cell release leukotrienes by intracellular phopholipase.

similar effects to histamine

(acidic, sulfur contain lipid)

slower; prolonged response than histamines.

Term
platelet activating factor
Definition

complement (opsinization)

clotting (platelets)

kinin (bradykinin vasodilate)

Term
factor 12a
Definition
activate kinin cascade.
Term
NK cells
Definition

cell mediated; innate immunity.

look for MHC 1. bind/release cytokines/toxin molecules to cell. apoptosis.

Term
oxygen dependant killing mechanism
Definition
shift of cell's glucose metabolism.=NADPH =converted to hydrogen peroxide & reactive o2 species.
Term
oxygen independent killing mech
Definition

acidic PH of phagolysosome caused by lactic acid production

cationic proteins bind&damage target cell membrane. inhibition of bact growth by lactoferrin binding  of iron.

Term
NO nitric oxide
Definition

vasodilate

made by endothelial cells. kills microbes in activated macrphages; counteract platelets.

Term
resolution
Definition
repairable tissue minor damage. can return back to normal function.
Term
primary intention
Definition

wound healing of minimal tissue loss. close apposition of wound edge.

(paper cut/clean incision)

Term
secondary intention
Definition
scar formation, contraction takes longer. reconstruct phase 3-4 days-2weeks. fibroblast proliferation, collagen synthesis, epithelization, contaction of wound, cell differentiation.
Term
dysfunctional wound healing
Definition

-impaired collagen matrix assembly-nutrition(absorbic acid)

-impaired epithelization (hypoxem,steroid inhibit)

-impaired contraction excessiv wound contraction (burns)

Term
haptens
Definition
small antigens. need large amts to become immunogenic.
Term
alloimmunity
Definition

reaction to another person's tissue.

transplants.

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