| 5-HT | 5-hydroxytryptamine |
| 5-Htr1a | 5-hydroxytryptamine receptor 1A |
| FSH | Follicle-stimulating hormone |
| GABA | γ-aminobutyric acid |
| GK | Lactobacillus brevis GKJOY powder |
| GK1X | A low dose of L. brevis GKJOY (50 mg/kg) |
| GK2X | A medium dose of L. brevis GKJOY (100 mg/kg) |
| GK4X | A high dose of L. brevis GKJOY (200 mg/kg) |
| GnRH | Gonadotropin-releasing hormone |
| GPx | Glutathione peroxidase |
| IL | Interleukin |
| LH | Luteinizing hormone |
| MDA | Malondialdehyde |
| NO | Nitric oxide |
| PGK | Postbiotic metabolites of Lactobacillus brevis GKJOY |
| PS-MPs | Polystyrene microplastics |
| ROS | Reactive oxygen species |
| TNF | Tumor necrosis factor |