Bacterial toxins Flashcards
1
Q
What is an exotoxin?
A
Released by both gram-negative and gram positive bacteria, form toxoids which have a pathological effect on tissues
2
Q
What is an endotoxin?
A
Toxins released on cell death and lysis - only present in gram negative bacteria
3
Q
What are exotoxins made of?
A
Protein
4
Q
What are endotoxins made of?
A
Lipopolysachharide
5
Q
What is the effect of heat on endo- and exo- toxins?
A
Exotoxins are heat labile, endotoxins are heat stable
6
Q
What is the effect of formaldehyde on endo- and exo- toxins?
A
Exotoxins are denatured. Endotoxins are not denatured
7
Q
Which bacteria releases toxic shock toxin?
A
Staphylococcus aureus
