3HKYN	3-hydroxykynurenine
KYNA	kynurenic acid
AA	anthranilic acid
BMD	bone mineral density
XA	xanthurenic acid
PIA	picolinic acid
QA	quinolinic acid
TDO	trypophan 2,3-dioxygenase
MSC	mesenchymal stem cell
BM	bone marrow
HSC	hematopoietic stem cell
ROS	reactive oxygen species
BMSC	bone marrow stromal cell
Kyn	kynurenine
Trp	tryptophan
IDO	indoleamine 2,3-dioxygenase
BV	bone volume
TV	total volume
TPH	tryptophan hydroxylase
KAT	kynurenine aminotransferase
KMO	kynurenine monooxygenase
ACMS	2-amino-3-carboxymuconate-6-semialdehyde
ACMSD	2-amino-3-carboxymuconate-6-semialdehyde decarboxylase
3-HAO	3-hydroxyanthanilate oxidase
QPRT	quinolinate phosphoribosyl transferase
CNS	central nervous system
AD	Alzheimer’s Disease; Huntington’s Disease
HD; 3HAA	3-hydroxyanthranilic acid
OCN	osteocalcin
ALS	amyotrophic lateral sclerosis
NAD	nicotinamide adenine dinucleotide
MuSC	muscle stem cell
SE	serotonin
BDS	Brain-derived serotonin
GDS	gut-derived serotonin
VMH	ventromedial nucleus of hypothalamus
ME	melatonin
ERS	endoplasmic reticulum stress