- Diabetes, obesity and metabolism
- Phloretin Ameliorates Succinate-Induced Liver Fibrosis by Regulating Hepatic Stellate Cells
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Cong Thuc Le, Giang Nguyen, So Young Park, Hanh Nguyen Dong, Yun Kyung Cho, Jae-Ho Lee, Seung-Soon Im, Dae-Hee Choi, Eun-Hee Cho
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Endocrinol Metab. 2023;38(4):395-405. Published online August 3, 2023
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DOI: https://doi.org/10.3803/EnM.2023.1661
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 Abstract
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- Background
Hepatic stellate cells (HSCs) are the major cells which play a pivotal role in liver fibrosis. During injury, extracellular stimulators can induce HSCs transdifferentiated into active form. Phloretin showed its ability to protect the liver from injury, so in this research we would like to investigate the effect of phloretin on succinate-induced HSCs activation in vitro and liver fibrosis in vivo study.
Methods
In in vitro, succinate was used to induce HSCs activation, and then the effect of phloretin on activated HSCs was examined. In in vivo, succinate was used to generated liver fibrosis in mouse and phloretin co-treated to check its protection on the liver.
Results
Phloretin can reduce the increase of fibrogenic markers and inhibits the proliferation, migration, and contraction caused by succinate in in vitro experiments. Moreover, an upregulation of proteins associated with aerobic glycolysis occurred during the activation of HSCs, which was attenuated by phloretin treatment. In in vivo experiments, intraperitoneal injection of phloretin decreased expression of fibrotic and glycolytic markers in the livers of mice with sodium succinate diet-induced liver fibrosis. These results suggest that aerobic glycolysis plays critical role in activation of HSCs and succinate can induce liver fibrosis in mice, whereas phloretin has therapeutic potential for treating hepatic fibrosis.
Conclusion
Intraperitoneal injection of phloretin attenuated succinate-induced hepatic fibrosis and alleviates the succinate-induced HSCs activation.
- Diabetes, Obesity and Metabolism
- Gemigliptin Alleviates Succinate-Induced Hepatic Stellate Cell Activation by Ameliorating Mitochondrial Dysfunction
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Giang Nguyen, So Young Park, Dinh Vinh Do, Dae-Hee Choi, Eun-Hee Cho
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Endocrinol Metab. 2022;37(6):918-928. Published online November 15, 2022
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DOI: https://doi.org/10.3803/EnM.2022.1530
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Abstract
PDFPubReader ePub
- Background
Dipeptidyl peptidase-4 inhibitors (DPP-4Is) are used clinically as oral antidiabetic agents. Although DPP-4Is are known to ameliorate liver fibrosis, the protective mechanism of DPP-4Is in liver fibrosis remains obscure. In this study, gemigliptin was used to investigate the potential of DPP-4Is to alleviate the progression of liver fibrosis.
Methods
To clarify the effects and mechanisms of gemigliptin, we conducted various experiments in LX-2 cells (immortalized human hepatic stellate cells [HSCs], the principal effectors of hepatic fibrogenesis), which were activated by succinate and exhibited elevated expression of α-smooth muscle actin, collagen type 1, and pro-inflammatory cytokines and increased cell proliferation. In vivo, we examined the effects and mechanisms of gemigliptin on a high-fat, high-cholesterol–induced mouse model of nonalcoholic steatohepatitis (NASH).
Results
Gemigliptin decreased the expression of fibrogenesis markers and reduced the abnormal proliferation of HSCs. In addition, gemigliptin reduced the succinate-induced production of mitochondrial reactive oxygen species (ROS), intracellular ROS, and mitochondrial fission in HSCs. Furthermore, in the mouse model of NASH-induced liver fibrosis, gemigliptin alleviated both liver fibrosis and mitochondrial dysfunction.
Conclusion
Gemigliptin protected against HSC activation and liver fibrosis by alleviating mitochondrial dysfunction and ROS production, indicating its potential as a strategy for preventing the development of liver disease.
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Citations
Citations to this article as recorded by  - Improvement effect of gemigliptin on salivary gland dysfunction in exogenous methylglyoxal-injected rats
Woo Kwon Jung, Su-Bin Park, Hwa Young Yu, Junghyun Kim
Heliyon.2024; 10(8): e29362. CrossRef - Gemigliptin, a DPP4 inhibitor, ameliorates nonalcoholic steatohepatitis through AMP-activated protein kinase-independent and ULK1-mediated autophagy
Youngmi Song, Hyekyung Yang, Juhee Kim, Yoonjin Lee, Sung-Ho Kim, In-Gu Do, Cheol-Young Park
Molecular Metabolism.2023; 78: 101806. CrossRef - DPP-4 Inhibitor in Type 2 Diabetes Mellitus Patient with Non-Alcoholic Fatty Liver Disease: Achieving Two Goals at Once?
Ji Cheol Bae
Endocrinology and Metabolism.2022; 37(6): 858. CrossRef
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