Reversion of liver cirrhosis after endovascular treatment in Chinese patients with Budd-Chiari syndrome

Association between overt hepatic encephalopathy and liver pathology after transjugular intrahepatic portosystemic shunt creation in cirrhotic patients

To investigate the association between overt hepatic encephalopathy (OHE) and liver pathology after transjugular intrahepatic portosystemic shunt (TIPS) creation in cirrhotic patients. From July 2015 to April 2024, 73 patients from 4 hospitals in China who received TIPS creation and liver biopsy were retrospectively enrolled in this study. Based on whether OHE occurred within 3 months after TIPS creation, the patients were categorized into OHE (n = 29) and non-OHE (n = 44) groups. The liver pathology was assessed by hematoxylin-eosin (H&E), Sirius red staining, immunohistochemistry, and immunofluorescence. Liver pathology by H&E staining showed typical features of liver cirrhosis (including disordered structure and pseudolobule formation) in all the patients. No marked difference was observed in extracellular matrix (ECM) deposition between the OHE and non-OHE groups. However, the patients in the OHE group had a higher level of liver and systemic inflammation than in the non-OHE group. And there was a strong correction between intrahepatic macrophage infiltration and serum inflammatory indicators. Additionally, the OHE group had more liver neovascularization, which was consistent with liver inflammation. The emergence of OHE after TIPS creation is closely associated with liver pathology, especially in liver inflammation and angiogenesis, but not in ECM deposition.

Ginkgetin exhibits antifibrotic effects by inducing hepatic stellate cell apoptosis via STAT1 activation

Liver fibrosis affects approximately 800 million patients worldwide, with over 2 million deaths each year. Nevertheless, there are no approved medications for treating liver fibrosis. In this study, we investigated the impacts of ginkgetin on liver fibrosis and the underlying mechanisms. The impacts of ginkgetin on liver fibrosis were assessed in mouse models induced by thioacetamide or bile duct ligation. Experiments on human LX-2 cells and primary mouse hepatic stellate cells (HSCs) were performed to explore the underlying mechanisms, which were also validated in the mouse models. Ginkgetin significantly decreased hepatic extracellular matrix deposition and HSC activation in the fibrotic models induced by thioacetamide (TAA) and bile duct ligation (BDL). Beneficial effects also existed in inhibiting hepatic inflammation and improving liver function. In vitro experiments showed that ginkgetin markedly inhibited HSC viability and induced HSC apoptosis dose-dependently. Mechanistic studies revealed that the antifibrotic effects of ginkgetin depend on STAT1 activation, as the effects were abolished in vitro after STAT1 silencing and in vivo after inhibiting STAT1 activation by fludarabine. Moreover, we observed a meaningful cross-talk between HSCs and hepatocytes, in which IL-6, released by ginkgetin-induced apoptotic HSCs, enhanced hepatocyte proliferation by activating STAT3 signaling. Ginkgetin exhibits antifibrotic effects by inducing HSC apoptosis via STAT1 activation and enhances hepatocyte proliferation secondary to HSC apoptosis via the IL-6/STAT3 pathway.