Abstract
Ethnopharmacological relevanceBauhinia championii (Benth.) Benth. is used in Chinese traditional medicine to treat arthritis, especially has been used a long time ago on rheumatoid arthritis (RA) in She ethnic minority group. Aim of the researchTo investigate the anti-RA effect of Bauhinia championii (Benth.) Benth ethyl acetate extract (BCBEE) and the molecular bases of it. Materials and methodsBCBEE was studied on a rat model of RA induced by Ⅱcollagen in vivo, as well as on primary synovial cells in vitro. ResultsAfter BCBEE treatment, in vivo, it was showed that paw and joint edema was inhibited, pathological joint changes was ameliorated and the levels of interleukin (IL)-1β and tumor necrosis factor-<alpha>(TNF-α) was decreased significantly. The protein and mRNA expressions of nuclear factor-<kappa>B (NF-κB)(p65), IκB, p-IκB and IκB kinase beta (IκKβ) were also down-regulated. Moreover, the in vitro study revealed that BCBEE treatment inhibited primary synovial cells proliferation, and promoted down-regulation of NF-κB(p65), IκB, p-IκB and IκKβ. ConclusionsTaken together, the present study demonstrates that BCBEE produces a protection in a rat model of RA induced by Ⅱcollagen via inhibiting paw and joint edema, ameliorating pathological joint changes and regulating the levels of cytokines and its action mechanism maybe is via down-regulating NF-κB(p65), IκB, p-IκB and IκKβ expression.
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