AD	Alzheimer’s disease
APP	Amyloid precursor proteins
Aβ	Amyloid-beta
BBB	Blood-brain Barrier
CNS	Central nervous system
CUR/HP-β-CD inclusion complexes	Hydroxypropyl-β-cyclodextrin-encapsulated curcumin complexes
CUR-CS-PLGA-NPs	Curcumin encapsulated chitosan-coated PLGA nanoparticles
FCur NPs	Curcumin encapsulated Pluronic F127 nanoparticles
GBX	Gut-brain axis
GM	Gut microbiota
MAPK	Mitogen-activated protein kinase
NF-κB	Nuclear factor kappa-light-chain-enhancer of activated B cells
NFTs	neurofibrillary tangles
Nrf2	Nuclear factor erythroid 2-related factor 2
PBCA	Poly(butyl)cyanoacrylate
PEG	Polyethyleneglycol
PLA	Poly (lactic acid)
PLGA	Poly(lactic-co-glycolic acid)
ROS	Reactive oxygen species
WHO	World health organization