6-OHDA	6-hydroxydopamine
AChE	acetylcholinesterase
AD	Alzheimer’s disease
APPL2	adaptor protein phosphotyrosine interacting with PH domain and leucine zipper 2
BBB	blood-brain barrier
BDI	Beck Depression Inventory
BDNF	brain-derived neurotrophic factor
BZ	benzodiazepine
CAT	catalase
CES-D	Center for Epidemiologic Studies Depression Scale
CGI	Clinical Global Impression
ChAT	acetylcholine transporter
CORT	corticosterone
COX-2	cyclooxygenase-2
CRF	corticotrophin-releasing factor
CRH	corticotropin-releasing hormone
CUMS	chronic (unpredictable) mild stress
D1Rs	DA D1 receptors
DA	dopamine
DAT	DA transporter
DCX	doublecortin
DPPH	1-diphenyl-2-picrylhydrazyl
DST	Direct Current Transcranial Stimulation
GABA	Gamma-Aminobutyric acid
GABAAR	GABA A subtype receptor
GAD	generalized anxiety disorder
GR	glucocorticoid receptor
GSH	glutathione
GSH-Px	glutathione peroxidase
GSK3β	glycogen synthase kinase-3
H2O2	hydrogen peroxide
HAMD	Hamilton Rating Scale for Depression
HARS	Hamilton Anxiety Rating Scale
HD	Huntington’s disease
HMBG1	High Mobility Group Box 1
HPA	hypothalamic-pituitary-adrenal axis
HSP70	heat shock proteins 70
ICI	Indefinite Complaints Index
IL-1β	interleukin 1 beta
KMI	Kupperman Menopausal Index
LC	Locus Coeruleus
LPS	Lipopolysaccharide
MAO A/B	monoamine oxidase A/B
MDA	malondialdehyde
METH	methamphetamine
MMP	mitochondrial membrane potential
MPTP	1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine
NE	norepinephrine
NF-κB	nuclear factor kappa-light-chain-enhancer of activated B cells
NGF	nerve growth factor
NLRP3	nucleotide-binding domain, leucine-rich repeat, pyrin domain containing protein 3
NMDAR/NR2B	N-methyl D-aspartate receptor subtype 2B
NPY	neuropeptide Y
OBX	olfactory bulbectomy
OSA	obstructive sleep apnea
PCNA	proliferating cell nuclear antigen
PD	Parkinson’s disease
pERK	phosphorylated Extracellular signal-regulated kinase
PGE(2)	prostaglandin E(2)
pJNK	phosphorylated c-Jun N-terminal kinases
PSD95	postsynaptic density protein-95
PSQI	Pittsburgh Sleep Quality Index
ROS	reactive oxygen species
RS	repeated restraint stress
SAS	self-rating anxiety scale
SDS	self-rating depression scale
SERM	selective oestrogen receptor modulator
SOD	superoxide dismutase
SYP	synaptophysin
TLR4	toll-like receptor 4
TNF-α	tumor necrosis factor alpha
TrkB	tyrosine kinase receptor B