Catégories : Tous - diseases - brain

par Jenny Doriot Il y a 16 années

595

Prions

Prions are infectious agents formed by the conversion of the normal glycoprotein PrPc into the infectious form PrPSc. The PrPc protein is located on chromosome 20 in humans and is implicated in the regulation of cell death.

Prions

Prions

caused by conversion of glycoprotein PrPc into an infectious form PrpSc

recent evidence suggests PrPc is involved in regulating cell death
Prpc located on chromosome 20 in humans

1982 Prusiner--Scrapie in sheep caused by prions

spongiform encephalopathies because large vacoules formed in brain\\

Human disease

can be hereditary but not necessarily all the time
fatal familial insomnia
Gerstmann-Straussler-Scheinker syndrome
Creutzfeldt-Jakob disease
kuru

Scrapie was reduced with proteases but not radiation which meant that the infection was a protein