Acyl-CoA	acyl-coenzyme A
AE	adverse event
ALA	alpha-lipoic acid
ATP	adenosine triphosphate
BBB	blood-brain barrier
BMI	body mass index
CGI	Clinical Global Impressions
CGI-S	Clinical Global Impressions-Severity of Illness
CI	confidence interval
CNS	central nervous system
COMT	catechol-O-methyltransferase
CoQ10	coenzyme Q10
CRP	C-reactive protein
DAG	diacylglycerol
DHLA	dihydrolipoic acid
EPA	eicosapentaenoic acid
HAM-D	Hamilton Depression Rating Scale
HPA	hypothalamic-pituitary-adrenal
HR	hazard ratio
hsCRP	high-sensitivity C-reactive protein
IL-8	interleukin-8
IP3	inositol triphosphate
LAC	L-acetylcarnitine
LCFA	long chain fatty acids
MADRS	Montgomery–Åsberg Depression Rating Scale
MAOIs	monoamine oxidase inhibitors
MAPK	mitogen activated protein kinase
MDD	major depressive disorder
mGlu 2	type 2 metabotropic glutamate
mGlu	metabotropic glutamate
MMA	methylmalonic acid
MTHF	L-5-methyl-tetrahydrofolate
MTHFR	5,10-methylenetetrahydrofolate reductase
NAC	N-acetylcysteine
NMDA	N-methyl-D-aspartate
OR	odds ratio
PIP	phosphatidylinositol
PUFAs	polyunsaturated fatty acids
RR	relative risk
SAH	S-adenosylhomocysteine
SAMe	S-adenosylmethionine
SD	standard deviation
SMD	standardized mean difference
SNRIs	serotonin norepinephrine reuptake inhibitors
SSRIs	selective serotonin reuptake inhibitors
STAR*D	Sequenced Treatment Alternatives to Relieve Depression
TCAs	tricyclic antidepressants
TDO	tryptophan 2,3-dioxygenase
TNF-α	tumor necrosis factor-α
VDRs	vitamin D receptors