NFKBIA and hyperplastic polyp: Western blot results showed that the expression of p-p65 and p-IκBα was elevated in MP synoviocytes compared with NC synoviocytes (Figure 6a–c, p < 0.01), and the expression of IκBα was decreased (Figure 6d, p < 0.01), while CeNP significantly abolished the increased expression of p-IκBα and p-p65 in MP synoviocytes and reduced the degradation of IκBα.