AD	Alzheimer’s disease
ASD	autism spectrum disorder
AUC	area under curve
BBB	blood-brain barrier
CNS	central nervous system
CSF	cerebro-spinal fluid
IV	intravenous
LENK	leucine-5-enkaphalin
MMP	matrix metalloproteinase
NGF	nerve growth factor
NLC	nanostructured lipid carrier
OEF	olfactory ensheathing fibroblast
OSN	olfactory sensory neuron
PD	Parkinson’s disease
PEG	polyethylene glycol
PGLA	poly(l-lactide-co-glycolide)
RMS	rostral migratory stream
TJ	tight junction