| AMPs | antimicrobial compound peptides |
| CFU | colony forming unit |
| DNA | deoxyribonucleic acid |
| ECM | extracellular matrix |
| EPS | exopolysaccharide |
| F/B | Firmicutes-to-Bacteriodetes |
| g | grams |
| GIT | gastrointestinal tract |
| GOS | galacto-oligosaccharides |
| IFN-γ | interferon-gamma |
| IL | interleukin |
| LPS | lipopolysaccharide |
| mg | milligrams |
| MMPs | matrix metalloproteinases |
| NF-κB | nuclear factor kappa-light-chain-enhancer of activated B cells |
| NMF | natural moisturizing factors |
| OCL-1 | occluding-1 |
| pH | potential of hydrogen |
| RNA | ribonucleic acid |
| ROS | reactive oxygen species |
| rRNA | ribosomal ribonucleic acid |
| SASP | senescence-associated secretory phenotype |
| TNF | tumor necrosis factor |
| TNF-α | tumor necrosis factor-alpha |
| TOR | target of rapamycin |
| UV | ultraviolet radiation |
| UVB | ultraviolet radiation B |
| VEGF | vascular endothelial growth factor |
| ZO-1 | zonula occluden-1 |