| ACh | Acetylcholine |
| AIC | Air-interfaced culture |
| ASP+ | 4-[4-(dimethylamino)-styryl]-N-methylpyridinium |
| ATB0,+ | Amino acid transporter B0,+ |
| COPD | Chronic obstructive pulmonary disease |
| CSE | Cigarette smoke extract |
| ESH | Ergothioneine |
| ETT | Ergothioneine transporter |
| HDM | House dust mite extract |
| IHC | Immunohistochemistry |
| LCC | Liquid-covered conditions |
| LC-MS/MS | Liquid chromatography–tandem mass spectrometry |
| LPS | Lipopolysaccharide |
| MATE | Multidrug and toxin extrusion |
| MPP+ | 1-methyl-4-phenylpyridinium |
| MRPs | Multidrug-resistance-associated proteins |
| NF-κB | Nuclear factor kappa B |
| NHBE | Normal human bronchial epithelial |
| OATs | Organic anion transporters |
| OCT | Organic cation transporter |
| OCTN | Novel organic cation transporter |
| PDSC | Prednisolone succinate-l-carnitine |
| RDS | Respiratory distress syndrome |
| SLC | Solute carrier |
| TEA | Tetraethylammonium |
| TNF-α | Tumour necrosis factor α |