Prions | The General Mechanism of Prion Formation and Disease

The video explains prion proteins, which are misfolded proteins that aggregate and cause diseases like Alzheimer's, Parkinson's, and kuru. These aggregates disrupt neuron function, leading to brain deterioration and death. The video uses analogies to clarify the misfolding and aggregation process, emphasizing the critical role of prion propagation in disease onset.

What is a prion protein primarily characterized by?

• Its role in energy production

• Its function in muscle contraction

• Its ability to bind to DNA

• Its misfolded conformation

How do prion proteins propagate disease?

• By increasing cell division

• By stabilizing cell membranes

• By forming aggregates

• By enhancing immune response

What analogy is used to explain the aggregation of prion proteins?

• A stack of books

• A row of dominoes

• Fold-out chairs

• A chain of beads

What is a significant effect of prion aggregates on neurons?

• Increased neuron growth

• Enhanced synaptic connections

• Neuron death and brain deterioration

• Improved memory function

Which part of the brain is particularly affected in Alzheimer's disease due to prion aggregates?

• Thalamus

• Cerebral cortex

• Brainstem

• Cerebellum

How is the prion disease kuru transmitted?

• Through airborne particles

• Through contaminated water

• By consuming infected brain tissue

• Via insect bites

What is the ultimate outcome of prion diseases?

• Temporary memory loss

• Complete recovery

• Death of the individual

• Chronic pain