How Does Parkinson's Disease Spread Through the Brain?…

How Does Parkinson's Disease Spread Through the Brain? Yale Researchers Identify a Potential New Target Parkinson's disease affects more than 10 million people worldwide, yet current treatments primarily focus on managing symptoms rather than slowing the disease itself. One of the biggest unanswered questions has been: How does Parkinson's disease spread from one brain cell to another? A new study from Yale School of Medicine, published in Nature Communications, may have brought scientists one step closer to the answer. Researchers identified two proteins on the surface of neurons, mGluR4 and NPDC1, that appear to act as gateways for the toxic protein α-synuclein, allowing it to enter healthy neurons and contribute to disease progression. The findings may provide a promising new target for future disease-modifying therapies. Parkinson's disease is a progressive neurodegenerative disorder characterized by the gradual loss of dopamine-producing neurons in the substantia nigra, a region of the brain involved in movement. Its hallmark symptoms include: Tremors Slowed movement (bradykinesia) Muscle rigidity Impaired balance and coordination A defining pathological feature is the accumulation of misfolded alpha-synuclein (α-synuclein), which aggregates into Lewy bodies inside neurons. Increasing evidence suggests that these abnormal protein aggregates spread from one neuron to another i