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  • Title: Jieduquyuzishen Prescription Attenuates Renal Fibrosis in MRL/lpr Mice via Inhibiting EMT and TGF-β1/Smad2/3 Pathway.
    Author: Wu S, Ji L, Fan X, Fang S, Bao J, Yuan X, Fan Y, Xie G.
    Journal: Evid Based Complement Alternat Med; 2022; 2022():4987323. PubMed ID: 35591863.
    Abstract:
    Jieduquyuziyin prescription (JP) has been used to treat lupus nephritis (LN) and its effectiveness in the treatment of LN has been clinically proven, but the underlying mechanisms have yet to be completely understood. This aim of this study was to clarify the efficacy of JP on the epithelial-mesenchymal transition (EMT) of renal tubular epithelial cells and the molecular mechanisms of JP in MRL/lpr mice. In vivo, we observed the therapeutic actions of JP in MRL/lpr mice as well as its antifibrosis effect and potential mechanism. In vitro, we evaluated the role of JP in EMT and its possible mechanism through the EMT of human renal proximal tubular epithelial cells (HK-2) induced by transforming growth factor-beta 1 (TGF-β1) and M2c macrophages. HK-2 cells were treated with JP-treated serum, and MRL/lpr mice were treated by JP for 8 weeks. The results showed that JP alleviated disease activity, improved renal function, decreased proteinuria, and improved renal injury and fibrosis in MRL/lpr mice. Furthermore, JP suppressed the activation of the TGF-β1/Smad2/3 signaling pathway, upregulated the E-cadherin levels, and downregulated the Vimentin and mesenchymal α-smooth muscle actin (α-SMA) levels in the kidney of MRL/lpr mice. JP was further found to prevent the TGF-β1 and M2c macrophages-induced EMT of HK-2 cells. Collectively, JP could alleviate the disease activity of MRL/lpr mice, improve renal function, and attenuate renal fibrosis, and its underlying mechanisms may be related to the inhibition of EMT and TGF-β1/Smad2/3 signaling pathway.
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