Plantamajoside attenuates inflammatory response in LPS-stimulated human gingival fibroblasts by inhibiting PI3K/AKT signaling pathway.

Periodontitis is an important inflammatory disease that often causes by periodontopathic bacteria. The present study, we tested the anti-inflammatory effects of plantamajoside on LPS-stimulated human gingival fibroblasts. Human gingival fibroblasts (HGFs) were stimulated with LPS from Porphyromonas gingivalis. Plantamajoside was administrated 1 h before LPS treatment. The results demonstrated that plantamajoside decreased the production of PGE2, NO, IL-6, and IL-8 in LPS-stimulated HGFs. LPS-induced NF-κB p65 and IκB phosphorylation were also suppressed by plantamajoside. Furthermore, plantamajoside inhibited LPS-induced PI3K and AKT phosphorylation. In conclusion, these results suggested that the mechanism of plantamajoside was through inhibiting PI3K/AKT signaling pathway, which lead to the inhibition of NF-κB activation and inflammatory response.