| CLDN | claudin |
| DE | differentially expressed |
| GAPDH | glyceraldehyde 3-phosphate dehydrogenase |
| HaCaT | immortalized human skin keratinocytes |
| JAM | junctional adhesion molecules |
| LPS | lipopolysaccharide |
| OCLN | occludin |
| TEER | transepithelial electrical resistance |
| TIGK | human telomerase immortalized gingival keratinocytes |
| TJ | tight junction |
| ZO | zonula occludens |