Lec 27 Prions Flashcards
Mad cow disease is a type of ___ in humans and animals
transmissible spongiform encephalopathy (TSE)
TSEs cause a large immune response , T?F?
False, they cause no immune response
How do vacuoles form in TSE?
protein aggregate causing neurons to die, and astroglial cells eat them
The TSE affecting sheep is
scrapie
Scrapie resembles what?
An infectious agent
Kuru is from which region?
Southern Fore
How was Kuru transmitted between humans? What about to monkeys?
Through cannabalism; injections
What TSEs are inherited?
fCJD, GSS, FFI,
The animal TSEs are:
scrapie (sheep), BSE (mad cow), TME (mink), chronic wasting (deer)
What TSE is sporadic?
sCJD
Which TSEs are transmissable?
scrapie, BSE, kuru
TSEs are fatal within a year, T?F?
TRUE
Scrapie does not have ___, so it is resistant to UV rays
nucleic acid
THe gene that omits normal nucleic genome from proteins and causes prions is:
PrPsc
The mutated form of PrPc is a (open/closed) form of protein
closed, which is NOT GOOD!
Types of protein aggregation are
amyloid fibrils, amorphous, soluble oligomers
The mad cow incubation period is how long?
2-8 yrs
How could mad cow be transmitted between cows?
Cattle fed offal as a supplement
Besides cows, offal was fed to __ causing BSE as well
minks
How to test for BSE?
A spinal fluid test and binding steel balls to blood proteins
vCJD has no treatment, T/F?
TRUE
Variable protease sensitive prionopathy affects which population?
Over 60 years old
In alzheimer’s disease, what does the brain damage look like physically?
it looks like plaques and tangles
Mild Alzheimers looks like
trouble making sense of the world, but still managing. depression