| LDN | Low-dose naltrexone |
| LPS | Lipopolysaccharide |
| IFN-γ | Interferon gamma |
| mTOR | Mammalian target of rapamycin |
| OXPHOS | oxidative phosphorylation |
| DMEM | Dulbecco’s modified eagle medium |
| FCS | Fetal calf serum |
| iNOS | Inducible nitric oxide synthase |
| CD206 | Cluster of differentiation 206 |
| OCR | Oxygen consumption rate |
| ECAR | Extracellular acidification rate |
| p70S6K | Ribosomal protein S6 kinase beta-1 |
| p-p70S6K | Phosphorylated ribosomal protein S6 kinase beta-1 |
| GM-CSF | granulocyte-macrophage colony-stimulating factor |
| TLR-4 | Toll-like receptor 4 |
| COVID-19 | Coronavirus disease of 2019. |
| ACE2 | Angiotensin-converting enzyme 2 |