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ISSN 1001-5256 (Print)
ISSN 2097-3497 (Online)
CN 22-1108/R
Volume 38 Issue 3
Mar.  2022
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Article Contents

Effect of Shuganning injection on the model of cholestasis - type chlorpromazine - induced liver injury constructed by a new tissue - engineered liver

DOI: 10.3969/j.issn.1001-5256.2022.03.018
Research funding:

Big Data Precision Medicine Advanced Innovation Center (1212040205);

Beijing Natural Science Foundation (7222094);

Capital Health Development Scientific Research Special Project (2021-1G-2181)

More Information
  • Corresponding author: WU Qiao, wuqiao322@163.com(ORCID: 0000-0001-7667-5002); DUAN Zhongping, duan@ccmu.edu.cn(ORCID: 0000-0002-8455-0426)
  • Received Date: 2021-07-13
  • Accepted Date: 2021-08-12
  • Published Date: 2022-03-20
  •   Objective  To investigate the effect of Shuganning injection (SGN) in alleviating drug-induced cholestasis and the possible mechanisms involved.  Methods  The liver of Sprague-Dawley rats was decellularized to prepare collagen scaffolds, and then the scaffolds were recellularized with human HepG2 cells to obtain the tissue-engineered liver (normal control group). The tissue-engineered liver was perfused with 10 μmol/L chlorpromazine (CPZ) and bile salt mixture to establish a model of drug-induced cholestasis (CPZ group), and the model was further treated with Shuganning injection (103-fold dilution) as the injury protection group (SGN+CPZ group). The markers for hepatocellular injury [alanine aminotransferase (ALT), aspartate aminotransferase (AST), lactate dehydrogenase (LDH), and alkaline phosphatase (ALP)] and the antioxidant and oxidative stress markers [glutathione (GSH), malondialdehyde (MDA), superoxide dismutase (SOD), and reactive oxygen species (ROS)] were measured for all groups, and the normal control group, the CPZ group, and the SGN+CPZ group were compared in terms of the mRNA and protein expression levels of the enzymes associated with liver bile salt metabolism and the enzymes associated with hepatic cholestasis. HE staining was performed to observe liver pathology. A one-way analysis of variance was used for comparison of continuous data between multiple groups, and the least significant difference t-test was used for further comparison between two groups.  Results  Compared with the CPZ group, the SGN+CPZ group had significant reductions in the markers for hepatocellular injury ALT, AST, LDH, and ALP (all P < 0.000 1), significant increases in the oxidative stress markers GSH and SOD (P < 0.000 1 and P < 0.001), and significant reductions in the markers MDA and ROS (P < 0.000 1 and P < 0.001). Compared with the CPZ group, the SGN+CPZ group had significant reductions in the mRNA expression levels of cholesterol 7α-hydroxylase (CYP7A1) and sterol 12α-hydroxylase (CPY8B1) in hepatocytes (all P < 0.001) and significant increases in the mRNA expression levels of farnesoid X receptor (FXR), small heterodimeric partner (SHP), bile salt export pump (BSEP), and multidrug resistance-associated protein 2 (MRP2) (P < 0.000 1, P < 0.01, P < 0.000 1, and P < 0.000 1). HE staining showed that compared with the CPZ group, the SGN+CPZ group had a significant reduction in hepatocyte injury and a significant increase in the number of cells.  Conclusion  Shuganning injection can alleviate drug-induced cholestatic liver injury caused by chlorpromazine, and it exerts a protective effect by activating FXR in hepatocytes and increasing the expression of SHP to regulate bile salt balance. It also inhibits CYP7A1 and CYP8B1 to reduce the synthesis of hydrophobic bile acids and upregulates the expression of BSEP and MRP2 to promote the excretion of bile salts.

     

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