| UV | Ultraviolet |
| MMP-1 | Matrix metalloprotease-1 |
| COX-2 | Cyclooxygenase-2 |
| NF-κB | Nuclear factor-κB |
| AP-1 | Activator protein-1 |
| MAPK | Mitogen-activated protein kinase |
| ERKs | Extracellular signal-regulated kinases |
| JNKs | c-Jun N terminal kinases |
| PKC-delta | Protein kinase C delta |
| JAK2 | Janus kinase 2 |
| STAT-3 | Signal transducer the and activator of transcription 3 |
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