NFKB1 and rheumatoid arthritis: Studies (85, 86) have shown that the anti-inflammatory mechanism of tetrandrine in the treatment of RA may be related to its efficacy in inhibiting the LPS-induced phosphorylation of IκBα and NF-κB p65 in RAW 264.7 macrophages and ATDC5 chondrocytes and reducing the expression of COX in peripheral blood mononuclear cell of CFA rats.