Endoplasmic reticulum stress does not contribute to steatohepatitis in obese and insulin-resistant high-fat-diet-fed foz/foz mice

2014 ◽  
Vol 127 (7) ◽  
pp. 507-518 ◽  
Author(s):  
Vanessa Legry ◽  
Derrick M. Van Rooyen ◽  
Barbara Lambert ◽  
Christine Sempoux ◽  
Laurence Poekes ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Endoplasmic Reticulum ◽  
Liver Disease ◽  
Endoplasmic Reticulum Stress ◽  
High Fat Diet ◽  
High Fat ◽  
Simple Steatosis ◽  
Insulin Resistant ◽  
Alcoholic Steatohepatitis ◽  
Progressive Liver Disease

Unlike in mice developing simple steatosis, endoplasmic reticulum stress does not contribute to the pathogenesis of insulin resistance and steatohepatitis in high-fat-diet-fed foz/foz mice, which develop progressive liver disease in the metabolic context seen in human non-alcoholic steatohepatitis.

scholarly journals Impaired ferritinophagy induced hepatic insulin resistance via endoplasmic reticulum stress of high fat diet mice

2020 ◽  
Vol 79 (OCE2) ◽  
Author(s):  
Chunjie Jiang ◽  
Shanshan Zhang ◽  
Hongmei Zeng ◽  
Jingjing Liu ◽  
Dan Li ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Endoplasmic Reticulum ◽  
Endoplasmic Reticulum Stress ◽  
Glucose Uptake ◽  
Iron Metabolism ◽  
High Fat Diet ◽  
Hepg2 Cells ◽  
Ammonium Citrate ◽  
Iron Level ◽  
High Fat

AbstractEmerging evidence has been revealed that high fat diet (HFD) correlate with insulin resistance (IR) which could be induced by endoplasmic reticulum stress (ERS). Recently, obesity or HFD induced nonalcoholic fatty liver disease (NAFLD) could promote alteration of iron metabolism. Disorder of iron metabolism have been linked to unnormal metabolism of glucose and lipid. Herein, we investigated the effect of impaired iron homeostasis on hepatic IR, focusing on ferritinophagy. Male C57/6J mice were administered with HFD (60% energy from fat) or LFD (10% energy from fat) for 10 weeks (n = 10), and Palmitic acid (PA)-insulin treated HepG2 cells were also established. Hepatic IR as evidenced by increased hepatic steatosis and decreased of p-AKT (48%, p < 0.0005), p-GSK-3β (34%, p < 0.05) in the liver of HFD mice. In addition, decreased iron level and expression NCOA4, as well as increased up-regulation of IRE1α and EIF2α were observed in HFD liver. By using desferrioxamine (DFO) and ferric ammonium citrate (FAC), we examined iron level on IRE1α and EIF2α. And glucose uptake assay shown that FAC supplementation, and ERS inhibitors of 4-PBA and STF could improve the glucose uptake of HepG2 cells in the presence of PA. Furthermore, we evaluated the glucose uptake of HepG2 cells incubated with adenovirus which mediated overexpression of NCOA4, FAC, 4-PBA (ERS inhibitor) or STF (IRE1 inhibitor). Taken together, deficiency of iron induced by impaired ferritinophagy induced hepatic IR, partly by aggravating hepatic ERS, especially IRE1 signal pathway in vivo and vitro. These findings provide evidence and new insight for therapeutic strategy of iron deficiency in NAFLD.

Hypothalamic endoplasmic reticulum stress and insulin resistance in offspring of mice dams fed high-fat diet during pregnancy and lactation

Metabolism ◽  
2014 ◽  
Vol 63 (5) ◽  
pp. 682-692 ◽  
Author(s):  
Arine M. Melo ◽  
Rafaela O. Benatti ◽  
Leticia M. Ignacio-Souza ◽  
Caroline Okino ◽  
Adriana S. Torsoni ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Endoplasmic Reticulum ◽  
Endoplasmic Reticulum Stress ◽  
High Fat Diet ◽  
High Fat ◽  
Pregnancy And Lactation

scholarly journals Successful Versus Failed Adaptation to High-Fat Diet-Induced Insulin Resistance: The Role of IAPP-Induced  -Cell Endoplasmic Reticulum Stress

Diabetes ◽  
2009 ◽  
Vol 58 (4) ◽  
pp. 906-916 ◽  
Author(s):  
A. V. Matveyenko ◽  
T. Gurlo ◽  
M. Daval ◽  
A. E. Butler ◽  
P. C. Butler
Keyword(s):  
Insulin Resistance ◽  
Endoplasmic Reticulum ◽  
Endoplasmic Reticulum Stress ◽  
High Fat Diet ◽  
High Fat

scholarly journals Antibiotic perturbation of the murine gut microbiome enhances the adiposity, insulin resistance, and liver disease associated with high-fat diet

2016 ◽  
Vol 8 (1) ◽  
Author(s):  
Douglas Mahana ◽  
Chad M. Trent ◽  
Zachary D. Kurtz ◽  
Nicholas A. Bokulich ◽  
Thomas Battaglia ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Liver Disease ◽  
Gut Microbiome ◽  
High Fat Diet ◽  
High Fat
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