Abstract:
:Angiopoietin-like protein 4 (Angptl4) is a secreted protein predominantly expressed in liver and adipose tissues, and has been identified as an adipokine. Angptl4 is the target gene of peroxisome proliferator‑activated receptors, which are widely used as lipid‑lowering and anti‑diabetic drugs, and previous studies have demonstrated that Angptl4 is able to directly stimulate adipocyte lipolysis. The current study focused on how Angptl4 was involved in regulating lipid and glucose metabolism in high‑fat‑diet (HFD) C57 mice. In the present study, mice were divided into three groups, with standard chow mice as a normal control, adenovirus (adv)‑injected HFD mice as a model control and adv‑Angptl4‑injected HFD mice as the Angptl4+ group. Firstly, compared with the normal control group, mice in the model control group gained more body weight with severe liver steatosis and increased serum levels of triglyceride, total cholesterol, free fatty acids, alanine aminotransferase and aspartate aminotransferase. In the Angptl4+ group, Angptl4 reduced the weight growth rate, aggravated hepatic steatosis and further increased all the aforementioned serum indexes. Secondly, compared with the normal control, the model control group had a reduced glucose tolerance and developed insulin resistance. Angptl4 expression and the phosphorylation levels of several insulin signaling pathway‑associated genes, insulin receptor substrate 1, protein kinase B, janus kinase 2, signal transducer and activator of transcription 3 were downregulated in the liver samples. Adv‑Angptl4 injection was observed to improve glucose tolerance and insulin resistance. The genes measured were identified to be upregulated close to normal levels. All the results suggested that Angptl4 served an important role in lipid and glucose metabolism in HFD‑induced obese mice, and this may have a great significance for treatment of hyperlipidemia, diabetes, metabolic syndrome and other diseases.
journal_name
Mol Med Repjournal_title
Molecular medicine reportsauthors
Wang Y,Liu LM,Wei L,Ye WW,Meng XY,Chen F,Xiao Q,Chen JY,Zhou Ydoi
10.3892/mmr.2016.5637subject
Has Abstractpub_date
2016-10-01 00:00:00pages
3293-300issue
4eissn
1791-2997issn
1791-3004journal_volume
14pub_type
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