Parkinson's Parkinson's Research and Pathophysiology 2

Question 1

Which biomarker test has been validated for diagnosing Parkinson's disease by detecting alpha-synuclein in skin biopsies?

Accepted Answer

Skin biopsy alpha-synuclein seed amplification assay (SAA)

Answer

Skin biopsy alpha-synuclein seed amplification assay (SAA) has been validated as a highly sensitive and specific biomarker for Parkinson's disease, detecting pathological alpha-synuclein in cutaneous nerves.

Question 2

Which animal toxin model is classically used in research to induce Parkinson's-like dopaminergic neuron loss?

Accepted Answer

MPTP (1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine)

Answer

MPTP, accidentally discovered when it caused Parkinsonism in drug users, selectively destroys dopaminergic neurons in the substantia nigra and is widely used in animal Parkinson's research models.

Question 3

Which neuroprotective strategy is currently being tested in Parkinson's clinical trials targeting alpha-synuclein?

Accepted Answer

Anti-alpha-synuclein immunotherapy (antibodies)

Answer

Multiple clinical trials are testing antibodies (passive immunotherapy) and vaccines (active immunotherapy) designed to clear pathological alpha-synuclein aggregates from the brain.

Question 4

The PPMI (Parkinson's Progression Markers Initiative) study is primarily designed to:

Accepted Answer

Identify biomarkers to track Parkinson's progression and test disease-modifying therapies

Answer

PPMI, sponsored by the Michael J. Fox Foundation, is a landmark longitudinal study enrolling thousands of participants to discover and validate biomarkers for tracking Parkinson's progression.

Question 5

Neuroinflammation in Parkinson's disease is primarily driven by activation of which brain cells?

Accepted Answer

Microglia

Answer

Activated microglia, the brain's resident immune cells, produce inflammatory cytokines and reactive oxygen species that contribute to dopaminergic neuron death in Parkinson's disease.

Parkinson's Practice Test

Parkinson's Practice Test

Parkinson's Parkinson's Research and Pathophysiology 2