scholarly journals The intake of high fat diet with different trans fatty acid levels differentially induces oxidative stress and non alcoholic fatty liver disease (NAFLD) in rats

2011 ◽  
Vol 8 (1) ◽  
pp. 65 ◽  
Author(s):  
Madiha Dhibi ◽  
Faten Brahmi ◽  
Amira Mnari ◽  
Zohra Houas ◽  
Issam Chargui ◽  
...  
2020 ◽  
Vol 11 (1) ◽  
pp. 1037-1048 ◽  
Author(s):  
Yuanyuan Hu ◽  
Fawen Yin ◽  
Zhongyuan Liu ◽  
Hongkai Xie ◽  
Yunsheng Xu ◽  
...  

Acerola polysaccharides ameliorate HFD-induced NAFLD by inhibiting lipogenesis, reducing oxidative stress and inflammation, and promoting the mitochondrial function in C57BL/6 mice.


2020 ◽  
Vol 11 (4) ◽  
pp. 2953-2968 ◽  
Author(s):  
Xiaobing Yang ◽  
Wenjing Mo ◽  
Chuanjin Zheng ◽  
Wenzhi Li ◽  
Jian Tang ◽  
...  

Non-alcoholic fatty liver disease is associated with gut microbiota, oxidative stress, and inflammation.


2018 ◽  
Vol 45 (6) ◽  
pp. 2187-2198 ◽  
Author(s):  
Dongxia Fu ◽  
Haibin Cui ◽  
Yunna Zhang

Background/Aims: Non-alcoholic fatty liver disease (NAFLD) is the most common cause of chronic liver disease. This study aims to investigate whether chloride channel 2 (ClC-2) is involved in high fat diet (HFD)-induced NAFLD and possible molecular mechanisms. Methods: ClC-2 expression was liver-specifically downregulated using adeno-associated virus in C57BL/6 mice treated with a chow diet or HFD for 12 weeks. Peripheral blood and liver tissues were collected for biochemical and pathological estimation respectively. Western blotting was applied to detect the protein expressions of lipid synthesis-related enzymes and the phosphorylated level of IRS-1, Akt and mTOR. Results: ClC-2 mRNA level was significantly increased in patients with non-alcoholic steatohepatitis, which positively correlated with the plasma levels of alanine transaminase (ALT), aspartate transaminase (AST) and insulin. Knockdown of ClC-2 in liver attenuated HFD-induced weight gain, obesity, hepatocellular ballooning, and liver lipid accumulation and fibrosis, accompanied by reduced plasma free fatty acid (FFA), triglyceride (TG), total cholesterol (TC), ALT, AST, glucose and insulin levels and homeostasis model of insulin resistance (HOMA-IR) value. Moreover, HFD-treated mice lacking ClC-2 showed inhibited hepatic lipid accumulation via regulating lipid metabolism through decreasing sterol regulatory element binding protein (SREBP)-1c expression and its downstream targeting enzymes such as fatty acid synthase (FAS), HMG-CoA reductase (HMGCR) and acetyl-Coenzyme A carboxylase (ACCα). In addition, in vivo and in vitro results demonstrated that ClC-2 downregulation in HFD-treated mice or HepG2 cells increased the sensitivity to insulin via activation of IRS-1/Akt/mTOR signaling pathway. Conclusion: Our present study reveals a critical role of ClC-2 in regulating metabolic diseases. Mice lacking ClC-2 are associated with a remarkably beneficial metabolic phenotype, suggesting that decreasing ClC-2 may be an attractive therapeutic strategy for the treatment of NAFLD.


2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Seung A. Hong ◽  
Ik-Rak Jung ◽  
Sung-E. Choi ◽  
Yoonjung Hwang ◽  
Soo-Jin Lee ◽  
...  

AbstractNon-alcoholic fatty liver disease (NAFLD) is excessive fat build-up in the liver without alcohol consumption and includes hepatic inflammation and damage. Excessive influx of fatty acids to liver from circulation is thought to be a pathogenic cause for the development of NAFLD. Thus, inhibition of fatty acid intake into hepatocyte would be a maneuver for protection from high fat diet (HFD)-induced NAFLD. This study was initiated to determine whether sodium fluorocitrate (SFC) as a fatty acid uptake inhibitor could prevent palmitate-induced lipotoxicity in hepatocytes and protect the mice from HFD-induced NAFLD. SFC significantly inhibited the cellular uptake of palmitate in HepG2 hepatocytes, and thus prevented palmitate-induced fat accumulation and death in these cells. Single treatment with SFC reduced fasting-induced hepatic steatosis in C57BL/6J mice. Concurrent treatment with SFC for 15 weeks in HFD-fed C57BL/6J mice prevented HFD-induced fat accumulation and stress/inflammatory signal activation in the liver. SFC restored HFD-induced increased levels of serum alanine aminotransferase and aspartate aminotransferases as hepatic injury markers in these mice. SFC treatment also improved HFD-induced hepatic insulin resistance, and thus ameliorated HFD-induced hyperglycemia. In conclusion, inhibition of fatty acid mobilization into liver through SFC treatment can be a strategy to protect from HFD-induced NAFLD.


Nutrients ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 480 ◽  
Author(s):  
Weixin Ke ◽  
Pan Wang ◽  
Xuehua Wang ◽  
Xiaolu Zhou ◽  
Xiaosong Hu ◽  
...  

The root of Platycodon grandiflorus (PG), with hepatoprotective and anti-oxidation effects, has a long history of being used as food and herbal medicine in Asia. However, the mechanism of PG against non-alcoholic fatty liver disease (NAFLD) is still not clear. The aim of this study was to investigate the mechanism of PG suppressing the development of NAFLD induced by a high-fat diet (HFD) in mice. Male C57BL/6J mice were fed with either a standard chow diet or a HFD, either supplemented with or without PG, for 16 weeks. Serum lipids, liver steatosis, oxidative stress and insulin sensitivity were determined. Expressions or activities of hepatic enzymes in the related pathways were analyzed to investigate the mechanisms. PG significantly reduced HFD-induced hepatic injury and hyperlipidemia, as well as hepatic steatosis via regulating phosphorylation of acetyl-CoA carboxylase (p-ACC) and expression of fatty acid synthase (FAS). In addition, PG ameliorated oxidative stress by restoring glutathione (GSH) content and antioxidant activities, and improved insulin sensitivity by regulating the PI3K/Akt/GSK3β signaling pathway. Our data showed that dietary PG have profound effects on hepatic insulin sensitivity and oxidative stress, two key factors in the pathogenesis of NAFLD, demonstrating the potential of PG as a therapeutic strategy for NAFLD.


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