Abstract

Chinese herbs were widely proposed as a novel approach for renal fibrosis. Icariin has been reported to be involved in a variety of diseases. Unilateral ureteral obstruction (UUO) is a popular experimental model of renal injury, which is often used in the study of renal fibrosis. A UUO mouse model was successfully constructed, and tubular injury and renal fibrosis were observed. Icariin treatment attenuated tubular injury and renal fibrosis in UUO mice. In addition, treatment with Icariin reduced the fibronectin, type I collagen and α-SMA levels in UUO mice. Furthermore, in a transforming growth factor (TGF)-β1-induced renal fibrosis cell model, icariin treatment also decreased fibronectin, type I collagen and α-SMA expression. Icariin treatment also reversed the enhanced migration of TGF-β1-induced HK-2 cells. These data indicated that icariin suppressed renal fibrosis in vivo and in vitro. Additionally, icariin treatment suppressed the Notch2/Hes-1 pathway in UUO mice and TGF-β1-treated HK-2 cells. In summary, this study found that icariin reduced renal fibrosis in vivo and in vitro by inhibiting the Notch2/Hes-1 pathway, which might help to improve therapies for renal fibrosis.

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