Aβ1-42	amyloid-β(1-42)
ABCG2	ATP-binding cassette transporter G2
AD	Alzheimer’s disease
AE2	anion exchange protein 2
APP	amyloid precursor protein
AQP1	aquaporin 1
BBB	blood–brain barrier
BCRP	breast cancer resistance protein
BCSFB	blood–cerebrospinal fluid barrier
CBD	corticobasal degeneration
CBS	corticobasal syndrome
Ccf-mtDNA	circulating cell-free mitochondrial DNA
CP	choroid plexus
CPE	choroid plexus epithelial
CSF	cerebrospinal fluid
DLB	dementia with Lewy bodies
FDG	fluorodeoxyglucose
FTD	frontotemporal dementia
GLUT	glucose transporter
HIAA	hydroxyindoleacetic acid
iNPH	idiopathic normal pressure hydrocephalus
IPAD	intravascular periarterial drainage
ISF	interstitial fluid
miRNA	microRNA
MS	multiple sclerosis
MSA	multiple system atrophy
NfL	neurofilament light chain
Nlgn1	neuroligin-1
NMR	nuclear magnetic resonance
PD	Parkinson’s disease
PSP	progressive supranuclear palsy
P-tau	Phosphorylated tau
SGLT2	sodium/glucose cotransporter 2
S100B	calcium-binding protein B
T-tau	total tau
VDBT	vascular dementia of the Binswanger’s type