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← Human Body & HealthWhy does neuronal damage continue in some neurodegenerative diseases even after the initial triggering event?
A)Direct excitotoxicity becomes self-perpetuating
B)Misfolded protein aggregates trigger seeding✓
C)Calcium buffering capacity remains insufficient
D)Axonal transport proteins get upregulated
💡 Explanation
Misfolded proteins, like amyloid-beta or tau, can aggregate and act as seeds, inducing further misfolding and aggregation of native proteins; this process is known as seeding. Because of this prion-like propagation mechanism, protein aggregation continues, therefore damage persists, rather than halting, even after the initial trigger is removed.
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