ArticleDiabetes, metabolic syndrome and obesity : targets and therapy2025
Jiangzhi Granule Ameliorates JNK-Mediated Mitochondrial Dysfunction to Reduce Lipotoxic Liver Injury in NASH.
Article in Diabetes, metabolic syndrome and obesity : targets and therapy, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Purpose: Mitochondrial dysfunction mediated by c-Jun N-terminal kinase (JNK) plays an important role in lipotoxic liver injury in nonalcoholic steatohepatitis (NASH). This study aims to investigate the pharmacological mechanism of Jiangzhi Granule (JZG), a Chinese herbal formula against NASH, with a focus on its regulation of JNK signaling-mediated mitochondrial function. Methods: Hepatocytes were induced by palmitic acid (PA) for 24 h to establish an in vitro lipotoxic model, which was simultaneously treated with either JZG or vehicle control. Male C57BL/6J mice were fed a high-fat diet (HFD) for 22 weeks and then treated with JZG via gavage for additional 8 weeks. Lipotoxic injury in hepatocytes or mice liver tissues, as well as JNK signaling-related molecules, were further investigated. Results: JZG improved PA-induced lipid deposition, cell viability, apoptosis, and mitochondrial dysfunction in hepatocytes. In NASH mice, JZG reduced hepatosteatosis, and inflammatory infiltration, and improved mitochondrial morphology and quantity in liver tissues. Additionally, elevated phosphorylation ratio of non-receptor tyrosine kinase c-Src (Src) and reduced phosphorylation ratio of JNK and SH2-containing protein tyrosine phosphatase (SHP-1) were found in both hepatocytes and mice liver tissues treated with JZG versus those with the vehicle. Conclusion: Taken together, JZG could improve mitochondrial dysfunction and reduce lipotoxic liver injury in NASH in vivo and in vitro models. The inhibition of the JNK signaling pathway may contribute to the underlying mechanism of JZG in preventing and reversing NASH development.
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