Understanding Prion Diseases and Mechanisms

The video discusses prion diseases, which are rare but increasing. It explains how prion proteins misfold and spread, leading to diseases like mad cow disease. The top ways to acquire prion disease are genetics, eating infected meat, and sporadic cases. The immune system struggles to combat prions, as they resist typical destruction methods. Prion diseases progress slowly, often taking years to show symptoms like dementia. Research is ongoing to find treatments, with some studies suggesting lymph node removal could prevent disease progression.

What is the primary reason prion diseases are concerning to immunologists?

• They are highly contagious.

• The immune system cannot effectively combat them.

• They are increasing rapidly in prevalence.

• They are easily treatable.

Which of the following is NOT a way a person can acquire prion disease?

• Viral infection

• Eating infected meat

• Sporadic occurrence

• Genetic inheritance

What role do dendritic cells play in the progression of prion diseases?

• They destroy prion proteins effectively.

• They transport prion proteins across the blood-brain barrier.

• They prevent prion proteins from misfolding.

• They are unaffected by prion proteins.

How do prion proteins primarily affect the brain?

• By enhancing cognitive functions

• By damaging and destroying neurons

• By causing inflammation in the liver

• By improving immune response

What is the role of microglia in prion diseases?

• They prevent prion proteins from entering the brain.

• They enhance the immune response to prions.

• They produce neurotoxic cytokines.

• They repair damaged neurons.

What percentage of prion disease cases are attributed to genetic factors?

• 85%

• 50%

• 15%

• 5%

Which of the following is a potential treatment avenue being researched for prion diseases?

• Gene therapy

• Antibiotic therapy

• Surgical removal of lymph nodes

• Vaccination against prions

What is the most common form of prion disease in humans?

• Mad cow disease

• Variant Creutzfeldt-Jakob disease

• Sporadic Creutzfeldt-Jakob disease

• Kuru

Why should humans avoid consuming the brain and spinal cord of their own species?

• They cause immediate illness.

• They are difficult to digest.

• They are low in nutritional value.

• They contain high concentrations of prion proteins.

What is the primary challenge in understanding sporadic prion disease cases?

• They are easily preventable.

• The cause is not well understood.

• They are caused by a known virus.

• They have a clear genetic link.