| 4-HNE | 4-hydroxynonenal |
| 6-OHDA | 6-Hydroxydopamine |
| AChE | Acetylcholinesterase |
| AKT | serine/threonine protein kinase |
| ARE | Antioxidant responsive element |
| Bax | Bcl-2-like protein 4 |
| Bcl-2 | B-cell lymphoma 2 |
| BDNF | Brain-derived neurotrophic factor. |
| b.w. | Body weight |
| CaMKII | Ca2+/calmodulin-dependent protein kinase II |
| Casp-3 | Caspase-3 |
| Casp-8 | Caspase-8 |
| Casp-9 | Caspase-9 |
| CAT | Catalase |
| CHIP | C terminus Hsp70 interacting protein |
| CNS | Central nervous system |
| COI | Cytochrome c oxidase I |
| COX-2 | Cyclooxygenase-2 |
| CUR | Curcumin |
| DA | Dopamine |
| DARPP-32 | Dopamine- and cAMP-regulated phosphoprotein |
| DAT | Dopamine transporter |
| DJ-1 | Protein deglycase |
| DOPAC | 3,4-dihydroxyphenylacetic acid |
| EC | (−)-Epicatechin |
| ECG | Epicatechin gallate |
| EGC | (−)-Epigallocatechin |
| EGCG | Epigallocatechin-3-gallate |
| ERK | Extracellular signal-regulated kinase protein-serine/threonine kinase |
| FA | Ferulic acid |
| GAPDH | Glyceraldehyde 3-phosphate dehydrogenase |
| GABA | Gamma-aminobutyric acid |
| GCLC | Glutamate cysteine ligase catalytic subunit |
| GCLM | Glutamate cysteine ligase modifier subunit |
| GDNF | Glial cell-derived neurotrophic factor |
| GFAP | Glial fibrillary acidic protein |
| GLu | Glutamate (or Glutamic acid) |
| GPx | Glutathione peroxidase |
| GR | Glutathione reductase |
| GRP-78 | 78 kDa Glucose-regulated protein |
| GS | Glutamine synthetase |
| GSH | Reduced glutathione |
| GSSG | Oxidized glutathione |
| GTPs | Green tea polyphenols |
| Hcy | Homocysteine |
| HO-1 | Heme oxygenase-1 |
| Hsp70s | The 70 kDa heat shock proteins |
| HVA | Homovanillic acid |
| Iba1 | Ionised calcium binding adapter molecule 1 |
| i.p. | Intraperitoneally |
| IL-1β | Interleukin 1 beta |
| IL-6 | Interleukin 6 |
| IL-10 | Interleukin 10 |
| iNOS | Inducible nitric oxide synthase |
| JNK | c-Jun N-terminal kinase |
| JSE | Juglandis Semen extract |
| L-DOPA | l-3,4-dihydroxyphenylalanine |
| LPS | Lipopolysaccharide |
| MAO | Monoamine oxidase |
| MAPK | Mitogen-activated protein kinase |
| MB | Maneb |
| MDA | Malondialdehyde |
| MMPs | N-methyl-4-phenyl-1,2,3,6-tetrahydropyridine |
| MPTP | Mitochondrial transmembrane potentials |
| mTORC1 | Mammalian target of rapamycin complex 1 |
| NF-кB | Nuclear factor-кB |
| nNOS | Nuclear nitric oxide synthase |
| NO | Nitric oxide |
| Nrf2 | Nuclear factor (erythroid-derived 2)-like 2 |
| NQO1 | NAD(P)H: quinone oxidoreductase 1 |
| (p) | probenocid |
| p-4E-BP1 | Phosphorylated 4E-binding protein 1 |
| p38 | MAP Kinase (MAPK), CSBP Cytokinin-Specific Binding Protein or RK |
| PARP | Poly(ADP-ribose) polymerase |
| PCA | Protocatechuic acid |
| PCs | Protein carbonyls |
| PD | Parkinson disease |
| PGE2 | Prostaglandin E2 |
| PI3K | phosphoinositide 3-kinase |
| PKC | Protein kinase C |
| PLA2 | Phospholipases A2 |
| p.o. | Orally |
| PQ | Resveratrol |
| RES | Paraquat |
| ROS | Reactive oxygen species |
| ROT | Rotenone |
| SA | Syringic acid |
| SIL | Silibinin |
| SNpc | Substantia nigra pars compacta |
| SOD | Superoxide dismutase |
| TBARS | Thiobarbituric acid reactive substances |
| TH | Tyrosine hydroxylase |
| TNF-α | Tumor necrosis factor alpha |
| TRAP | Total reactive antioxidant potential |
| Trx | Thioredoxin |
| TF | Theaflavin |
| TPs | Tea polyphenols |
| TrkB | Tropomyosin receptor kinase B |
| TUNEL | Terminal deoxynucleotidyl transferase dUTP nick end labeling |
| UA | Urolithin A |
| VMAT2 | Vesicular monoamine transporter-2 |