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  #1  
Old 09-20-2012
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Default Bacterial Endotoxin

Which of the following bacteria is capable of producing endotoxin?

a.staph.aureus
b.strep pneumo
c.mycobacteria
d.listeria
e.bacillus
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Old 09-20-2012
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Default my answer :)

c.mycobacteria

hmm.. all the other listed pathogens are G+ and endotoxin is a feature of G-. so I guess this question is asking about the least G+ pathogen. Not sure though...
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Old 09-20-2012
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listeria monocytogenes
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answer D
L. monocytogenes , the only gram (+) bacteria with endotoxin
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Old 09-20-2012
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Default errata

Wait isn't bacillus capable of producing endotoxin???

I just love micro...
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Old 09-20-2012
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Bacillus(spore forming -aerobic) produce exotoxin

B. cereus (MOTILE):
heat stable enterotoxin (like s. aureus exotoxin)-->vomiting, nausea

heat labile enterotoxin(like E.coli LT)-->increase AMPc--->decrease reabsorpt of NaCl---> diarrhea

B. anthracis (NON MONTILE):
PA toxin
EF(edema factor)toxin
LF(lethal factor)
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Old 09-20-2012
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Quote:
Originally Posted by Fuser00 View Post
Bacillus(spore forming -aerobic) produce exotoxin

B. cereus (MOTILE):
heat stable enterotoxin (like s. aureus exotoxin)-->vomiting, nausea

heat labile enterotoxin(like E.coli LT)-->increase AMPc--->decrease reabsorpt of NaCl---> diarrhea

B. anthracis (NON MONTILE):
PA toxin
EF(edema factor)toxin
LF(lethal factor)
Bacillus thuringiensis - delta-endotoxin

isn't Listeria's toxin an endotoxin-like toxin?

Last edited by Casandra; 09-20-2012 at 08:12 AM.
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Quote:
Originally Posted by Casandra View Post
Bacillus thuringiensis - delta-endotoxin

isn't Listeria's toxin an endotoxin-like toxin?
your right Bacillus thuringiensis produces endotoxin, well the Qs is only mention if produces endotoxin, I dont know if Bacillus thuringiensis produces clinical disease in humans, I havent found about something about it ,,, and l. monocytogenes produces a exotoxin too : Listeriolysin O which is a kind of Betha-hemolysin (L. monocytogenes : endotoxin and exotoxin--> " amphipatogenous ")
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i'll go with D) listeria
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Old 09-20-2012
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Embarrassed ...

I will go with Listeria
But I like what Casandra said:sorry:
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Default D is correct

Endotoxins production is characteristic of Gram -ve bugs But listeria monocytogenes(a gram +ve)is unique in producing both endo & exotoxins.
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Quote:
Originally Posted by blade View Post
Which of the following bacteria is capable of producing endotoxin?

a.staph.aureus
b.strep pneumo
c.mycobacteria
d.listeria
e.bacillus
I would go with listeria.
As its only gram positive with lipopolysacchride .


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Old 03-08-2013
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Which is more antigenic and heat labile
endo or exotoxin
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