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Micro B1 L9
n/a
23
Other
Professional
01/14/2010

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Term
toxins definition
Definition
virulence factors that damage the host
Term
endotoxin is
Definition
Lipid A portion of lipopolysaccharide
Term
exotoxin means either
Definition
that it's secreted
OR released with cell lysis
Term
enterotoxins def.
Definition
cause diarrhea or vomiting
Term
Shiga-like toxin aka _ is from _
Definition
Vero
E Coli
Term
pseudomonas aeruginosa features toxin:
Definition
exotoxin A
Term
A-B toxins. A is _ B is _. B is often made of _ but sometimes _
Definition
enzymatic ("Active")
binding
carbohydrate; protein
Term
A-B toxins may be _ or _ (2 classes)
Definition
simple
compound
Term
translocation of A-B toxins can be by 2 ways
Definition
direct
endocytosis
Term
many A-B toxins have a _ mechanism
Definition
ADP-ribosylation of a host cell protein
Term
membrane-disrupting toxins 2 types
Definition
pore forming
phospholipases
Term
(2) examples of pore-forming toxins
Definition
alpha-haemolysin
Panton-Valentine leukocidin (necrotizing factor)
Term
example of phospholipase _ toxin:
in what bacterium?
Definition
clostridium perfringens alpha toxin (phospholipase C)
Term
superantigens massively stimulate _ to make _. may result in (2)
Definition
T cells
cytokines

fever
shock
Term
superantigens do what?
Definition
form a bridge between MHC class II of Ag-presenting cells

and T cell receptors
Term
2 bacteria that cause toxic shock syndrome
Definition
staphylococcus aureus
strep pyogenes
Term
toxic shock syndrome is caused by what kind of toxin?
Definition
superantigen
Term
2 examples of food poisoning
Definition
-(SEA Staph enterotoxin A) by staph aureus

-botulinum toxin
Term
3 groups of toxins roles in disease
Definition
-food poisoning (e.g. SEA; botulism)
-colonize a surface and toxins act locally (cholera) or invade bloodstream (diphtheria)
-local tissue damage in abscesses (clostridium perfringens)
Term
clostridum perfringens _ toxin facilitates bacterial _
Definition
alpha

spread
Term
alpha toxin is in what bacterium
Definition
clostrium perfringens
Term
gas gangrene caused by
Definition
clostridum perfringens
Term
necrotizing factor =
Definition
Panton-Valenine leukocidin
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