Regulating effect of baicalin on IKK/IKB/NF-kB signaling pathway and apoptosis-related proteins in rats with ulcerative colitis

This study was aimed to explore effect of baicalin on IKK/IKB/NF-kB signaling pathway and apoptosis-related proteins in rats with ulcerative colitis (UC).Histopathological observation and scores of colon tissue were performed in the UC rat model. IKK/IKB/NF-kB signaling pathway and apoptosis-related proteins were measured by Western blotting.Baicalin significantly increased the activity of SOD, CAT and GSH-Px in colon tissue of rats with UC, but significantly decreased the content of MDA, IL-1β, MPO, PEG2 and TNF-α in colon tissue of rats with UC. In the molecular mechanism, baicalin significantly decreased the expression of cleaved-caspase3, cleaved-caspase9, Bcl-2/Bax, cyt-c, NF-kB p-65, p-IKKβ/IKKβ and p-IKBα/IKBα. Baicalin could significantly inhibit p-IKBα/IKBα content change, but had no significant effect on p-IKKβ/IKKβ.Baicalin may have a regulating effect on IKK/IKB/NF-kB signaling pathway and apoptosis-related proteins in UC rats.