3-HAO	3-hydroxyanthranilate oxidase
3-HK	3-hydroxykynurenine
AHR	aryl hydrocarbon receptor
AMPA	α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid
ANA	anthralinic acid
APC	antigen presenting cell
ATP	adenosine triphosphate
BBB	blood-brain barrier
CDxx	cluster of differentiation xx
CHMP	Committee for Medicinal Products for Human Use
CNS	central nervous system
DC	dendritic cell
EAE	experimental autoimmune encephalitis
GRP35	G-protein coupled receptor 35
IDO 1,2	izoenzymes indoleamine 2,3-dioxygenase 1 and 2
IFN-β	interferon beta
IFN-γ	interferon gamma
IL	interleukin
KAT 1, 2	kynurenine aminotransferase 1 and 2
KMO	kynure nine 3-monooxygenase
KP	kynurenine pathway
KYN	kynurenine
KYNA	kynurenic acid
MMP9	matrix metalloproteinase 9 (MMP9)
MP	methoxyndole pathway
MS	multiple sclerosis
NAD+	nicotinamide adenine dinucleotide
NADP+	nicotinamide adenine dinucleotide phosphate
NaMN	nicotinic acid mononucleotide
NAS	N-acetylserotonin
NK	natural killer cell
NMAPT	nicotinamide phosphoribosyltransferase
NMDA	N-methyl-D-aspartate
NMDA	N-methyl-D-aspartate receptor
NMN	nicotinamide mononucleotide
NMNAT	nicotinamide mononucleotide adenyl transferase
PARP	poly(ADP-ribose) polymerase
PBMC	peripherial blood monocytes
PMN	polymorphonuclear cells
PPMS	primary progressive multiple sclerosis
QUIN	quinolinic acid
RRMS	relapsing-remitting multiple sclerosis
SS	Sjögren’s syndrome
TDO	tryptophan 2,3-dioxygenase
TGF-β	transforming growth factor beta
TNFα	tumor necrosis factor alpha
Treg	regulatory T cell
TRP	tryptophan
VLA-4	very late antigen-4