
Keywords: Parkinson's disease; Ghrelin; Dementia; AHN; adult hippocampal neurogenesis; AD; Alzheimer's Disease; AMPA; α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid; AMPK; AMP-activated protein kinase; AB; amyloid-β; ATG; autophagy-related; BBB; blood brain