Abstract:
:Fenofibrate is widely used in clinical practice, but its influence on chronic endoplasmic reticulum (ER) stress induced by feeding a high-calorie and high-cholesterol diet (HCD) has still not been studied. We thus investigated its effects on the liver of the nonalcoholic fatty liver disease (NAFLD) mouse model. Male C57BL/6 mice fed an HCD for 3 months were treated with fenofibrate (HCD + FF, 40 mg/kg, once daily) via gavage for 4 weeks. Insulin sensitivity, serum lipid and inflammatory cytokines were measured. Liver tissues were procured for histological examination as well as analysis of hepatic triglyceride levels, distribution of inflammatory cytokines and genes involved in ER stress. Our results showed that chronic feeding of an HCD successfully induced an NAFLD model accompanied by inflammatory activation, apoptosis and severe ER stress in the liver. Fenofibrate administration significantly improved symptoms of NAFLD and decreased apoptosis, expression of inflammatory cytokines and genes involved in ER stress, such as inositol-requiring enzyme 1α (IRE1α), X-box binding protein 1 (XBP1) and JNK phosphorylation. Thus, our study suggests that fenofibrate protected against inflammatory injury and apoptosis, maybe alleviating ER stress through the IRE1α-XBP1-JNK pathway in the liver of NAFLD mice.
journal_name
Pharmacologyjournal_title
Pharmacologyauthors
Zhang N,Lu Y,Shen X,Bao Y,Cheng J,Chen L,Li B,Zhang Qdoi
10.1159/000380952subject
Has Abstractpub_date
2015-01-01 00:00:00pages
173-80issue
3-4eissn
0031-7012issn
1423-0313pii
000380952journal_volume
95pub_type
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