5-HT	5-hydroxytryptamine, serotonine
6-OHDA	6-hydroxydopamine
AAV2	adeno-associated virus serotype 2 vector
AD	Alzheimer’s disease
Akt	Akt enzyme, also known as protein kinase B
ALS	amyotrophic lateral sclerosis
ASN	alpha-synuclein
BBB	blood-brain-barrier
BDNF	brain-derived neurotrophic factor
CaMKII	calmodulin-dependent protein kinase II
cAMP	cyclicAMP
CNS	central nervous system
CREB	cAMP-response element-binding protein
CSF	cerebrospinal fluid
DA	dopamine
DAG	diacylglycerol
DAT	dopamine transporter
DOPAC	3,4-dihydroxyphenylacetic acid
ERK	extracellular signal-regulated kinases
GDNF	glial cell-derived neurotrophic factor
GSK-3β	glycogen synthase kinase 3 beta
HVA	homovanillic acid
IGF-1	insulin-like growth factor-1
IL-1β	interleukin 1 beta
IL-6	interleukin 6
IP3	inositol trisphosphate
JNK	c-Jun N-terminal kinases
L-DOPA	levodopa
LTP	long-term potentiation
MAPK	mitogen-activated protein kinase
mBDNF	mature BDNF
miRNAs	microRNAs
MPTP	1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine
NF-κB	nuclear factor kappa B
NGF	nerve growth factor
NMDA-R	N-methyl-D-aspartate receptor
NO	nitric oxide
NRTN	neurturin
NT-3	neurotrophin-3
NT-4	neurotrophin-4
p75NTR	p75 neurotrophin receptor
PD	Parkinson’s disease
PET	positron emission tomography
PGC1α	peroxisome proliferator-activated receptor gamma coactivator 1-alpha
PI3K	phosphatidylinositol-3 kinase
PKA	protein kinase A
PLCγ	phospholipase Cγ
RhoA	Ras homolog family member A
ROS	reactive oxygen species
r-metHuBDNF	recombinant methionyl human BDNF
SN	substantia nigra
ST	striatum
TH	tyrosine hydroxylase
TrkB	tropomyosin receptor kinase B
VEGF	vascular endothelial growth factor
VMAT2	vesicular monoamine transporter 2