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Background: We investigated whether curcumin and genistein affect the MUC5AC mucin production from human airway epithelial cells that is induced by phorbol 12-myristate 13-acetate (PMA) or tumor necrosis factor- (TNF-). Methods: Confluent NCI-H292 cells were pretreated with each agent for 30 min and then stimulated with PMA or TNF- for 24 hours. MUC5AC mucin production was measured by an ELISA. Results: (1) Curcumin dose-dependently inhibited the production of MUC5AC mucin that was induced by PMA or TNF-; (2) Genistein inhibited PMA-induced MUC5AC mucin production. However, it did not decrease TNF--induced MUC5AC mucin production. Conclusion: These results suggest that curcumin and genistein inhibit the production of airway mucin induced by PMA.

Effects of Curcumin and Genistein on Phorbol Ester or Tumor Necrosis Factor-α-Induced Mucin Production from Human Airway Epithelial Cells