Aβ	Amyloid-β
ACC	Anterior cingulate cortex
AChE	Acetylcholinesterase
AD	Alzheimer’s disease
APOE	Apolipoprotein E
BH4	Tetrahydrobiopterin
CBF	Cerebral blood flow
cGMP	Cyclic guanosine monophosphate
DLPFC	Dorsolateral prefrontal cortex
eNOS	Endothelial nitric oxide synthases
FAD	Flavin adenine dinucleotide
IL-6	Interleukin-6
iNOS	Inducible nitric oxide synthases
LPS	Lipopolysaccharide
NADPH	Nicotinamide adenine dinucleotide phosphate
NHANES	National health and nutrition examination survey
nNOS	Neuronal nitric oxide synthases
NO	Nitric oxide
PC12	Rat adrenal pheochromocytoma cell line
ROS	Reactive oxygen species
RNS	Reactive nitrogen species
SCFA	Short-chain fatty acid
TNF-α	Tumour necrosis factor-alpha