| 3-Hydroxyanthranilic acid | 3-HAA |
| 3-Hydroxyanthranilic acid 3,4-dioxygenase | 3-HAO |
| 3-Hydroxykynurenine | 3-HKYN |
| α-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor | AMPAR |
| Adenosine diphosphonate | ADP |
| Adenosine triphosphate | ATP |
| Alzheimer’s disease | AD |
| Aminocarboxymuconatesemialdehyde | ACMS |
| Anthranilic acid | AA |
| Aryl hydrocarbon receptor | AhR |
| Blood–brain barrier | BBB |
| Calcium | Ca2+ |
| Central nervous system | CNS |
| Iron(II)G protein-coupled receptor 35 | Fe2+GPR35 |
| Glutathione | GS |
| Glutathione S-transferase | GST |
| Huntington’s disease | HD |
| Indoleamine 2,3-dioxygenase | IDO |
| Kynurenic acid | KYNA |
| Kynureninase | KYNU |
| Kynurenine | KYN |
| Kynurenine 3-monooxygenase | KMO |
| Kynurenine aminotransferase | KAT |
| Kynurenine pathway | KP |
| Lactate dehydrogenase | LDH |
| Large neutral amino acid transporter 1 | LAT-1 |
| Nicotinamide adenine dinucleotide | NAD |
| N-methyl-D-aspartate | NMDA |
| Parkinson’s disease | PD |
| Picolinic acid | PA |
| Quinolinate phosphoribosylotransferase | QPRT |
| Quinolinic acid | QA |
| Reactive oxygen species | ROS |
| Superoxide dismutase | SOD |
| Tryptophan | TRP |
| Tryptophan 2,3-dioxygenase | TDO |
| Xanthurenic acid | XA |