https://www.apdaparkinson.org/article/nanocarrier-breakthrough-offers-hope-for-pd-treatment/

Nanocarriers are tiny engineered particles designed to deliver drugs directly to specific areas in the brain, crossing the blood-brain barrier (BBB) that often prevents effective drug delivery in PD. This technology holds promise for more precise treatment by targeting affected brain regions like the substantia nigra, potentially improving drug effectiveness, reducing side effects, and even slowing disease progression. Recent breakthroughs, like dual peptide-functionalized nanocarriers, have shown success in animal models, marking an exciting frontier in PD treatment research