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Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Mol+Med+Rep 2017 ; 16 (1): 737-45 Nephropedia Template TP
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Anti-fibrotic effect of Sedum sarmentosum Bunge extract in kidneys via the hedgehog signaling pathway #MMPMID28560403
Bai Y; Wu C; Hong W; Zhang X; Liu L; Chen B
Mol Med Rep 2017[Jul]; 16 (1): 737-45 PMID28560403show ga
Sedum sarmentosum Bunge (SSBE) is a perennial plant widely distributed in Asian countries, and its extract is traditionally used for the treatment of certain inflammatory diseases. Our previous studies demonstrated that SSBE has marked renal anti-fibrotic effects. However, the underlying molecular mechanisms remain to be fully elucidated. The present study identified that SSBE exerts its inhibitory effect on the myofibroblast phenotype and renal fibrosis via the hedgehog signaling pathway in vivo and in vitro. In rats with unilateral ureteral obstruction (UUO), SSBE administration reduced kidney injury and alleviated interstitial fibrosis by decreasing the levels of transforming growth factor (TGF)-?1 and its receptor, and inhibiting excessive accumulation of extracellular matrix (ECM) components, including type I and III collagens. In addition, SSBE suppressed the expression of proliferating cell nuclear antigen, and this anti-proliferative activity was associated with downregulation of hedgehog signaling activity in SSBE-treated UUO kidneys. In cultured renal tubular epithelial cells (RTECs), recombinant TGF-?1 activated hedgehog signaling, and resulted in induction of the myofibroblast phenotype. SSBE treatment inhibited the activation of hedgehog signaling and partially reversed the fibrotic phenotype in TGF-?1-treated RTECs. Similarly, aristolochic acid-mediated upregulated activity of hedgehog signaling was reduced by SSBE treatment, and thereby led to the abolishment of excessive ECM accumulation. Therefore, these findings suggested that SSBE attenuates the myofibroblast phenotype and renal fibrosis via suppressing the hedgehog signaling pathway, and may facilitate the development of treatments for kidney fibrosis.