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Effect of Adrenergic Agonists on High-Fat Diet-Induced Hepatic Steatosis in Mice
The autonomic nervous system, consisting of sympathetic and parasympathetic branches, plays an important role in regulating metabolic homeostasis. The sympathetic nervous system (SNS) regulates hepatic lipid metabolism by regulating adrenergic receptor activation, resulting in the stimulation of hep...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7764675/ https://www.ncbi.nlm.nih.gov/pubmed/33321735 http://dx.doi.org/10.3390/ijms21249392 |
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author | Nakade, Yukiomi Kitano, Rena Yamauchi, Taeko Kimoto, Satoshi Sakamoto, Kazumasa Inoue, Tadahisa Kobayashi, Yuji Ohashi, Tomohiko Sumida, Yoshio Ito, Kiyoaki Yoneda, Masashi |
author_facet | Nakade, Yukiomi Kitano, Rena Yamauchi, Taeko Kimoto, Satoshi Sakamoto, Kazumasa Inoue, Tadahisa Kobayashi, Yuji Ohashi, Tomohiko Sumida, Yoshio Ito, Kiyoaki Yoneda, Masashi |
author_sort | Nakade, Yukiomi |
collection | PubMed |
description | The autonomic nervous system, consisting of sympathetic and parasympathetic branches, plays an important role in regulating metabolic homeostasis. The sympathetic nervous system (SNS) regulates hepatic lipid metabolism by regulating adrenergic receptor activation, resulting in the stimulation of hepatic very-low-density lipoprotein-triglyceride (TG) production in vivo. However, only a few studies on the relationship between SNS and hepatic steatosis have been reported. Here, we investigate the effect of adrenergic receptor agonists on hepatic steatosis in mice fed a high-fat diet (HFD). The α-adrenergic receptor agonist phenylephrine (10 mg/kg/d) or the β-adrenergic receptor agonist isoproterenol (30 mg/kg/d) was coadministered with HFD to male mice. After five weeks, hepatic steatosis, TG levels, and hepatic fat metabolism-related biomarkers were examined. HFD treatment induced hepatic steatosis, and cotreatment with phenylephrine, but not isoproterenol, attenuated this effect. Phenylephrine administration upregulated the mRNA levels of hepatic peroxisome proliferator-activated receptor alpha and its target genes (such as carnitine palmitoyltransferase 1) and increased hepatic β-hydroxybutyrate levels. Additionally, phenylephrine treatment increased the expression of the autophagosomal marker LC3-II but decreased that of p62, which is selectively degraded during autophagy. These results indicate that phenylephrine inhibits hepatic steatosis through stimulation of β-oxidation and autophagy in the liver. |
format | Online Article Text |
id | pubmed-7764675 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-77646752020-12-27 Effect of Adrenergic Agonists on High-Fat Diet-Induced Hepatic Steatosis in Mice Nakade, Yukiomi Kitano, Rena Yamauchi, Taeko Kimoto, Satoshi Sakamoto, Kazumasa Inoue, Tadahisa Kobayashi, Yuji Ohashi, Tomohiko Sumida, Yoshio Ito, Kiyoaki Yoneda, Masashi Int J Mol Sci Article The autonomic nervous system, consisting of sympathetic and parasympathetic branches, plays an important role in regulating metabolic homeostasis. The sympathetic nervous system (SNS) regulates hepatic lipid metabolism by regulating adrenergic receptor activation, resulting in the stimulation of hepatic very-low-density lipoprotein-triglyceride (TG) production in vivo. However, only a few studies on the relationship between SNS and hepatic steatosis have been reported. Here, we investigate the effect of adrenergic receptor agonists on hepatic steatosis in mice fed a high-fat diet (HFD). The α-adrenergic receptor agonist phenylephrine (10 mg/kg/d) or the β-adrenergic receptor agonist isoproterenol (30 mg/kg/d) was coadministered with HFD to male mice. After five weeks, hepatic steatosis, TG levels, and hepatic fat metabolism-related biomarkers were examined. HFD treatment induced hepatic steatosis, and cotreatment with phenylephrine, but not isoproterenol, attenuated this effect. Phenylephrine administration upregulated the mRNA levels of hepatic peroxisome proliferator-activated receptor alpha and its target genes (such as carnitine palmitoyltransferase 1) and increased hepatic β-hydroxybutyrate levels. Additionally, phenylephrine treatment increased the expression of the autophagosomal marker LC3-II but decreased that of p62, which is selectively degraded during autophagy. These results indicate that phenylephrine inhibits hepatic steatosis through stimulation of β-oxidation and autophagy in the liver. MDPI 2020-12-10 /pmc/articles/PMC7764675/ /pubmed/33321735 http://dx.doi.org/10.3390/ijms21249392 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Nakade, Yukiomi Kitano, Rena Yamauchi, Taeko Kimoto, Satoshi Sakamoto, Kazumasa Inoue, Tadahisa Kobayashi, Yuji Ohashi, Tomohiko Sumida, Yoshio Ito, Kiyoaki Yoneda, Masashi Effect of Adrenergic Agonists on High-Fat Diet-Induced Hepatic Steatosis in Mice |
title | Effect of Adrenergic Agonists on High-Fat Diet-Induced Hepatic Steatosis in Mice |
title_full | Effect of Adrenergic Agonists on High-Fat Diet-Induced Hepatic Steatosis in Mice |
title_fullStr | Effect of Adrenergic Agonists on High-Fat Diet-Induced Hepatic Steatosis in Mice |
title_full_unstemmed | Effect of Adrenergic Agonists on High-Fat Diet-Induced Hepatic Steatosis in Mice |
title_short | Effect of Adrenergic Agonists on High-Fat Diet-Induced Hepatic Steatosis in Mice |
title_sort | effect of adrenergic agonists on high-fat diet-induced hepatic steatosis in mice |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7764675/ https://www.ncbi.nlm.nih.gov/pubmed/33321735 http://dx.doi.org/10.3390/ijms21249392 |
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