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Purpose: This study aimed to investigate the effects of the  Cassia obtusifolia  L. seed extract (CSE) on particulate matter (PM)-induced skin.Methods: The effects of CSE on cell viability were evaluated using a skin cell line. To determine the anti-inflammatory effects and matrix metallopeptidase-1 (MMP-1)-inhibitory effects of CSE on PM-induced skin, NO and MMP-1 expressions were measured using an enzyme-linked immunosorbent assay (ELISA) kit. Also, the effects of CSE was investigated the induction of IL-8 and TNF-α treated PM on reconstructed human full thickness skin models.Results: It was observed that CSE decreased NO production in PM-induced RAW 264.7 cells without cytotoxicity. In addition, CSE decreased the expression of MMP-1 in PM-induced cells in a dose-dependent manner. CSE decreased IL-8 and TNF-α production in a PM-reconstructed human skin model.Conclusion: These results indicate that CSE could be used as a cosmetic material to induce anti-inflammation and inhibition of MMP-1 in PM-induced skin.

Anti-inflammatory and Matrix Metallopeptidase-1-Inhibitory Effects of the Cassia obtusifolia L. Seed Extract on Particulate Matter-induced Skin