CS	Chitosan
CNPs	Chitosan-Based Nanoparticles
BBB	Blood–Brain Barrier
AD	Alzheimer’s Disease
Aβ	Amyloid-beta
CIRI	Cerebral Ischemia–Reperfusion Injury
CNS	Central Nervous System
DD	Degree of Deacetylation
DNA	Deoxyribonucleic Acid
EGFR	Epidermal Growth Factor Receptor
5-FU	5-Fluorouracil
HIF-1α	Hypoxia-Inducible Factor 1-alpha
miRNA	Micro Ribonucleic Acid
MMP	Matrix Metalloproteinase
P-gp	P-glycoprotein
PD	Parkinson’s Disease
PLA	Polylactic Acid
PLGA	Poly(lactic-co-glycolic acid)
ROS	Reactive Oxygen Species
siRNA	Small Interfering Ribonucleic Acid
sTPP	Sodium Tripolyphosphate
TfR	Transferrin Receptor
TPP	Tripolyphosphate