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Du Q, Teng M, Yang L, Meng C, Qiu Y, Wang C, Chen J, Wang T, Chen S, Luo Y, Sun J, Dong Y. Metabolic characteristics of voriconazole - Induced liver injury in rats. Chem Biol Interact 2023; 383:110693. [PMID: 37659626 DOI: 10.1016/j.cbi.2023.110693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 08/14/2023] [Accepted: 08/30/2023] [Indexed: 09/04/2023]
Abstract
Voriconazole (VOR) - induced liver injury is a common adverse reaction, and can lead to serious clinical outcomes. It is of great significance to describe the metabolic characteristics of VOR - induced liver injury and to elucidate the potential mechanisms. This study investigated the changes of plasma metabolic profiles in a rat model of VOR - induced liver injury by non - targeted metabolomics. Correlation analysis was performed between differentially expressed metabolites and plasma liver function indexes. The metabolites with strong correlation were determined for their predictive performance for liver injury using receiver operating characteristic (ROC) curve analysis. Potential biomarkers were then screened combined with liver pathological scores. Finally, the expression level of genes that involved in lipid metabolism were determined in rat liver to verify the mechanism of VOR - induced liver injury we proposed. VOR - induced liver injury in rats was characterized by plasma alanine aminotransferase (ALT) and aspartate aminotransferase (AST) elevation, the lipid droplets accumulation in liver, as well as inflammation and fibrosis. Significant changes of plasma metabolites were observed, with a decrease in lipid metabolites accounting for over 50% of all changed metabolites, and alterations of cholesterol and bile acids metabolites. The decrease of 3 phosphatidylcholine (PC) in plasma could indicate the occurrence of VOR - induced liver injury. Decreased fatty acids (FA) oxidation and bile acid excretion might be the potential mechanisms of VOR - induced liver injury. This study provided new insights into the molecular characterization of VOR - induced liver injury.
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Affiliation(s)
- Qian Du
- Department of Pharmacy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China
| | - Mengmeng Teng
- Department of Pharmacy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China
| | - Luting Yang
- Department of Pharmacy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China
| | - Chao Meng
- Department of Pharmacy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China
| | - Yulan Qiu
- Department of Pharmacy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China
| | - Chuhui Wang
- Department of Pharmacy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China
| | - Jiaojiao Chen
- Department of Pharmacy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China
| | - Taotao Wang
- Department of Pharmacy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China
| | - Siying Chen
- Department of Pharmacy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China
| | - Yu Luo
- Department of Pharmacy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China
| | - Jinyao Sun
- Department of Pharmacy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China
| | - Yalin Dong
- Department of Pharmacy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China.
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Atractylodin Ameliorates Colitis via PPARα Agonism. Int J Mol Sci 2023; 24:ijms24010802. [PMID: 36614242 PMCID: PMC9821687 DOI: 10.3390/ijms24010802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 12/28/2022] [Accepted: 12/29/2022] [Indexed: 01/05/2023] Open
Abstract
Atractylodin is a major compound in the rhizome of Atractylodes lancea, an oriental herbal medicine used for the treatment of gastrointestinal diseases, including dyspepsia, nausea, and diarrhea. Recent studies have shown that atractylodin exerts anti-inflammatory effects in various inflammatory diseases. Herein, we investigated the anti-colitis effects of atractylodin and its molecular targets. We determined the non-cytotoxic concentration of atractylodin (50 μM) using a cell proliferation assay in colonic epithelial cells. We found that pretreatment with atractylodin significantly inhibits tumor necrosis factor-α-induced phosphorylation of nuclear factor-κ-light-chain-enhancer of activated B in HCT116 cells. Through docking simulation analysis, luciferase assays, and in vitro binding assays, we found that atractylodin has an affinity for peroxisome proliferator-activated receptor alpha (PPARα). Daily administration of atractylodin (40 mg/kg) increased the survival rate of mice in a dextran sodium sulfate-induced colitis mouse model. Thus, atractylodin can be a good strategy for colitis therapy through inducing PPARα-dependent pathways.
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Betaine Supplementation Causes an Increase in Fatty Acid Oxidation and Carbohydrate Metabolism in Livers of Mice Fed a High-Fat Diet: A Proteomic Analysis. Foods 2022; 11:foods11060881. [PMID: 35327303 PMCID: PMC8949908 DOI: 10.3390/foods11060881] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 03/04/2022] [Accepted: 03/15/2022] [Indexed: 11/16/2022] Open
Abstract
Betaine, a common methyl donor whose methylation is involved in the biosynthesis of carnitine and phospholipids in animals, serves as food and animal feed additive. The present study used liquid chromatography-mass spectrometry (LC-MS) to analyze the liver protein profile of mice on a high fat (HF) diet to investigate the mechanism by which betaine affects hepatic metabolism. Although betaine supplementation had no significant effect on body weight, a total of 103 differentially expressed proteins were identified between HF diet + 1% betaine group (HFB) and HF diet group by LC-MS (fold change > 2, p < 0.05). The addition of 1% betaine had a significant enhancement of the expression of enzymes related to fatty acid oxidation metabolism, such as hydroxyacyl-Coenzyme A dehydrogenase (HADHA), enoyl Coenzyme A hydratase 1 (ECHS1) (p < 0.05) etc., and the expression of apolipoprotein A-II (APOA2) protein was significantly reduced (p < 0.01). Meanwhile, the protein expression of glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and succinate-CoA ligase (SUCLG1) were highly significant (p < 0.01). Pathway enrichment using the Kyoto Encyclopedia of Genes and Genomes (KEGG) revealed that the functions of differential proteins involved fatty acid catabolism, carbohydrate metabolism, tricarboxylic acid cycle (TCA) and peroxisome proliferator-activated receptor alpha (PPARα) signaling pathway. Protein−protein interaction (PPI) analysis discovered that acetyl-Coenzyme A acetyltransferase 1 (ACAT1), HADHA and ECHS1 were central hubs of hepatic proteomic changes in the HFB group of mice. Betaine alleviates hepatic lipid accumulation by enhancing fatty acid oxidation and accelerating the TCA cycle and glycolytic process in the liver of mice on an HF diet.
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Peng ML, Fu Y, Wu CW, Zhang Y, Ren H, Zhou SS. Signaling Pathways Related to Oxidative Stress in Diabetic Cardiomyopathy. Front Endocrinol (Lausanne) 2022; 13:907757. [PMID: 35784531 PMCID: PMC9240190 DOI: 10.3389/fendo.2022.907757] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 05/09/2022] [Indexed: 12/19/2022] Open
Abstract
Diabetes is a chronic metabolic disease that is increasing in prevalence and causes many complications. Diabetic cardiomyopathy (DCM) is a complication of diabetes that is associated with high mortality, but it is not well defined. Nevertheless, it is generally accepted that DCM refers to a clinical disease that occurs in patients with diabetes and involves ventricular dysfunction, in the absence of other cardiovascular diseases, such as coronary atherosclerotic heart disease, hypertension, or valvular heart disease. However, it is currently uncertain whether the pathogenesis of DCM is directly attributable to metabolic dysfunction or secondary to diabetic microangiopathy. Oxidative stress (OS) is considered to be a key component of its pathogenesis. The production of reactive oxygen species (ROS) in cardiomyocytes is a vicious circle, resulting in further production of ROS, mitochondrial DNA damage, lipid peroxidation, and the post-translational modification of proteins, as well as inflammation, cardiac hypertrophy and fibrosis, ultimately leading to cell death and cardiac dysfunction. ROS have been shown to affect various signaling pathways involved in the development of DCM. For instance, OS causes metabolic disorders by affecting the regulation of PPARα, AMPK/mTOR, and SIRT3/FOXO3a. Furthermore, OS participates in inflammation mediated by the NF-κB pathway, NLRP3 inflammasome, and the TLR4 pathway. OS also promotes TGF-β-, Rho-ROCK-, and Notch-mediated cardiac remodeling, and is involved in the regulation of calcium homeostasis, which impairs ATP production and causes ROS overproduction. In this review, we summarize the signaling pathways that link OS to DCM, with the intention of identifying appropriate targets and new antioxidant therapies for DCM.
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Affiliation(s)
- Meng-ling Peng
- Department of Cardiology, The First Hospital of Jilin University, Changchun, China
| | - Yu Fu
- Department of Cardiology, The First Hospital of Jilin University, Changchun, China
| | - Chu-wen Wu
- Department of Cardiology, The First Hospital of Jilin University, Changchun, China
| | - Ying Zhang
- Department of Cardiology, The First Hospital of Jilin University, Changchun, China
| | - Hang Ren
- Department of Cardiology, The Second Hospital of Jilin University, Changchun, China
| | - Shan-shan Zhou
- Department of Cardiology, The First Hospital of Jilin University, Changchun, China
- *Correspondence: Shan-shan Zhou,
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Jiang HW, Zhou Y, Zhou PY, Zhang TY, Hu JY, Bai XT. Protective Effects of Bariatric Surgery on Kidney Functions by Inhibiting Oxidative Stress Responses Through Activating PPARα in Rats With Diabetes. Front Physiol 2021; 12:662666. [PMID: 34262471 PMCID: PMC8275180 DOI: 10.3389/fphys.2021.662666] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 04/14/2021] [Indexed: 12/22/2022] Open
Abstract
Objective The aim of this study was to explore the protective effects and the regulatory mechanisms of bariatric surgery on kidney injury in diabetic rats. Methods We established a useful type 2 diabetic rat model using high-fat and high-sugar diet feeding following low-dose streptozotocin (STZ) treatment. Sprague–Dawley (SD) rats were randomly divided into the following groups: control (Con) group, diabetic nephropathy (DN) group, and duodenal–jejunal bypass (DJB) surgery group. The food intake and body weight of rats were monitored and the glucose tolerance test (OGTT) test was performed every 2 weeks. The glomerular filtration rate (GFR) and urinary albumin excretion rate (UAFR) were measured to assess renal function. Hematoxylin–eosin (H&E), periodic acid–Schiff (PAS), and Masson staining were used to evaluate renal histopathological changes. TUNEL assay was performed to detect cell apoptosis. The expressions of oxidative stress factors and inflammatory factors in the renal tissues of rats were detected by ELISA. The expressions of PPARα, reactive oxygen species (ROS), and NF-κB were detected by immunofluorescence. For in vitro experiment, HK2 cells cultured with high glucose were treated with PPARα agonist, PPARα antagonist, and adenosine 5′-monophosphate (AMP)-activated protein kinase (AMPK) agonist. The expressions of AMPK/PPARα/NF-κB signaling pathway-related proteins were detected by Western blot. Results Bariatric surgery improved the glucose tolerance of DN rats. The GFR was decreased, the promotion of urinary albumin excretion rate (UAER) was inhibited, and the renal injury was alleviated. The extracellular matrix fraction was decreased and the renal function was improved. Meanwhile, bariatric surgery activates PPARα, inhibits ROS release, reduces oxidative stress injury, and reduces renal cell apoptosis. In vitro experiment results showed that the AMPK activator could activate PPARα, downregulate NF-κB, and inhibit inflammatory response. The phosphorylation of AMPK was inhibited by PPARα antagonism. Conclusion Bariatric surgery can activate PPARα, inhibit oxidative stress injury, and improve glucose metabolism and renal function in DN rats.
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Affiliation(s)
- Hong-Wei Jiang
- Department of General Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Yong Zhou
- Department of General Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Pin-Yi Zhou
- Department of General Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Tian-Yi Zhang
- Department of General Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Jing-Yao Hu
- Department of General Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Xue-Tao Bai
- Department of Anaesthesiology, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
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6
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Shin CY, Lee HY, Kim GH, Park SY, Choi WS, Sohn UD. Effects of the Combination of Evogliptin and Leucine on Insulin Resistance and Hepatic Steatosis in High-Fat Diet-Fed Mice. Biomol Ther (Seoul) 2021; 29:419-426. [PMID: 33814417 PMCID: PMC8255144 DOI: 10.4062/biomolther.2021.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 02/09/2021] [Accepted: 02/27/2021] [Indexed: 12/20/2022] Open
Abstract
In this study, we aimed to investigate the effects of 8 weeks of treatment with a combination of evogliptin and leucine, a branched-chain amino acid, in mice with high-fat diet (HFD)-induced diabetes. Treatment with evogliptin alone or in combination with leucine reduced the body weight of the mice, compared to the case for those from the HFD control group. Long-term treatment with evogliptin alone or in combination with leucine resulted in a significant reduction in glucose intolerance; however, leucine alone did not affect postprandial glucose control, compared to the case for the mice from the HFD control group. Furthermore, the combination of evogliptin and leucine prevented HFD-induced insulin resistance, which was associated with improved homeostasis model assessment for insulin resistance, accompanied by markedly reduced liver fat deposition, hepatic triglyceride content, and plasma alanine aminotransferase levels. The combination of evogliptin and leucine increased the gene expression levels of hepatic peroxisome proliferator-activated receptor alpha, whereas those of the sterol regulatory element-binding protein 1 and stearoyl-CoA desaturase 1 were not altered, compared to the case in the HFD-fed mice (p<0.05). Thus, our results suggest that the combination of evogliptin and leucine may be beneficial for treating patients with type 2 diabetes and hepatic steatosis; however, further studies are needed to delineate the molecular mechanisms underlying the action of this combination.
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Affiliation(s)
- Chang Yell Shin
- Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Hak Yeong Lee
- Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Gil Hyung Kim
- Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Sun Young Park
- Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Won Seok Choi
- Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Uy Dong Sohn
- Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea
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7
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Marín-Aguilar F, Castejón-Vega B, Alcocer-Gómez E, Lendines-Cordero D, Cooper MA, de la Cruz P, Andújar-Pulido E, Pérez-Alegre M, Muntané J, Pérez-Pulido AJ, Ryffel B, Robertson AAB, Ruiz-Cabello J, Bullón P, Cordero MD. NLRP3 Inflammasome Inhibition by MCC950 in Aged Mice Improves Health via Enhanced Autophagy and PPARα Activity. J Gerontol A Biol Sci Med Sci 2021; 75:1457-1464. [PMID: 31603987 DOI: 10.1093/gerona/glz239] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Indexed: 02/06/2023] Open
Abstract
The NLRP3 inflammasome has emerged as an important regulator of metabolic disorders and age-related diseases in NLRP3-deficient mice. In this article, we determine whether, in old mice C57BL6J, the NLRP3 inflammasome inhibitor MCC950 is able to attenuate age-related metabolic syndrome to providing health benefits. We report that MCC950 attenuates metabolic and hepatic dysfunction in aged mice. In addition, MCC950 inhibited the Pi3K/AKT/mTOR pathway, enhanced autophagy, and activated peroxisome proliferator-activated receptor-α in vivo and in vitro. The data suggest that MCC950 mediates the protective effects by the mammalian target of rapamycin inhibition, thus activating autophagy and peroxisome proliferator-activated receptor-α. In conclusion, pharmacological inhibition of NLRP3 in aged mice has a significant impact on health. Thus, NLRP3 may be a therapeutic target of human age-related metabolic syndrome.
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Affiliation(s)
- Fabiola Marín-Aguilar
- Research Laboratory, Oral Medicine Department, University of Sevilla, Seville, Spain
| | - Beatriz Castejón-Vega
- Research Laboratory, Oral Medicine Department, University of Sevilla, Seville, Spain
| | - Elísabet Alcocer-Gómez
- Departamento de Psicología Experimental, Facultad de Psicología, Universidad de Sevilla, Seville, Spain
| | | | - Matthew A Cooper
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Patricia de la Cruz
- Department of General Surgery, Hospital Universitario Virgen del Rocio/CSIC/Universidad de Sevilla, Seville, Spain
| | - Eloísa Andújar-Pulido
- Centro Andaluz de Biología Molecular y Medicina Regenerativa, Consejo Superior de Investigaciones Científicas-Universidad de Sevilla-Universidad Pablo de Olavide, Seville, Spain
| | - Mónica Pérez-Alegre
- Centro Andaluz de Biología Molecular y Medicina Regenerativa, Consejo Superior de Investigaciones Científicas-Universidad de Sevilla-Universidad Pablo de Olavide, Seville, Spain
| | - Jordi Muntané
- Department of General Surgery, Hospital Universitario Virgen del Rocio/CSIC/Universidad de Sevilla, Seville, Spain
| | - Antonio J Pérez-Pulido
- Centro Andaluz de Biología del Desarrollo (CABD), Universidad Pablo de Olavide-CSIC-Junta de Andalucía, Seville, Spain
| | - Bernhard Ryffel
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), UMR 7355 CNRS-University of Orleans, France
- Institute of Infectious Disease and Molecular Medicine (IDM), University of Cape Town, South Africa
| | - Avril A B Robertson
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia
| | - Jesús Ruiz-Cabello
- CIC biomaGUNE, San Sebastian-Donostia, Spain
- IKERBASQUE, Basque Foundation for Science, Spain
- CIBER de Enfermedades Respiratorias (CIBERES), Madrid, Spain
- Universidad Complutense Madrid, Spain
| | - Pedro Bullón
- Research Laboratory, Oral Medicine Department, University of Sevilla, Seville, Spain
| | - Mario D Cordero
- Institute of Nutrition and Food Technology "José Mataix Verdú", Department of Physiology, Biomedical Research Center, University of Granada, Spain
- Cátedra de Reproducción y Genética Humana del Instituto para el Estudio de la Biología de la Reproducción Humana (INEBIR)-Universidad Europea del Atlántico (UNEATLANTICO)-Fundación Universitaria Iberoamericana (FUNIBER), Sevilla, Spain
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8
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Francque S, Szabo G, Abdelmalek MF, Byrne CD, Cusi K, Dufour JF, Roden M, Sacks F, Tacke F. Nonalcoholic steatohepatitis: the role of peroxisome proliferator-activated receptors. Nat Rev Gastroenterol Hepatol 2021; 18:24-39. [PMID: 33093663 DOI: 10.1038/s41575-020-00366-5] [Citation(s) in RCA: 165] [Impact Index Per Article: 55.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/02/2020] [Indexed: 02/06/2023]
Abstract
The increasing epidemic of obesity worldwide is linked to serious health effects, including increased prevalence of type 2 diabetes mellitus, cardiovascular disease and nonalcoholic fatty liver disease (NAFLD). NAFLD is the liver manifestation of the metabolic syndrome and includes the spectrum of liver steatosis (known as nonalcoholic fatty liver) and steatohepatitis (known as nonalcoholic steatohepatitis), which can evolve into progressive liver fibrosis and eventually cause cirrhosis. Although NAFLD is becoming the number one cause of chronic liver diseases, it is part of a systemic disease that affects many other parts of the body, including adipose tissue, pancreatic β-cells and the cardiovascular system. The pathomechanism of NAFLD is multifactorial across a spectrum of metabolic derangements and changes in the host microbiome that trigger low-grade inflammation in the liver and other organs. Peroxisome proliferator-activated receptors (PPARs) are a group of nuclear regulatory factors that provide fine tuning for key elements of glucose and fat metabolism and regulate inflammatory cell activation and fibrotic processes. This Review summarizes and discusses the current literature on NAFLD as the liver manifestation of the systemic metabolic syndrome and focuses on the role of PPARs in the pathomechanisms as well as in the potential targeting of disease.
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Affiliation(s)
- Sven Francque
- Department of Gastroenterology and Hepatology, Antwerp University Hospital, Antwerp, Belgium. .,Translational Research in Inflammation and Immunology (TWI2N), Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium.
| | - Gyongyi Szabo
- Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
| | - Manal F Abdelmalek
- Division of Gastroenterology and Hepatology, Department of Medicine, Duke University Health System, Durham, NC, USA
| | - Christopher D Byrne
- Nutrition & Metabolism, Human Development & Health, Faculty of Medicine, University Hospital Southampton, Southampton, UK
| | - Kenneth Cusi
- Division of Endocrinology, Diabetes and Metabolism, University of Florida, Gainesville, FL, USA
| | - Jean-François Dufour
- Hepatology, Department of Clinical Research, University Hospital of Bern, Bern, Switzerland.,University Clinic for Visceral Surgery and Medicine, Inselspital, Bern, Switzerland
| | - Michael Roden
- Division of Endocrinology and Diabetology, Medical Faculty, Heinrich Heine University Düsseldorf, University Clinics Düsseldorf, Düsseldorf, Germany.,Institute for Clinical Diabetology, German Diabetes Center (DDZ), Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Düsseldorf, Germany.,German Center for Diabetes Research (DZD e.V.), München-Neuherberg, Germany
| | - Frank Sacks
- Departments of Nutrition and Molecular Metabolism, Harvard T.H. Chan School of Public Health, Boston, MA, USA.,Channing Division, Department of Medicine Harvard Medical School and Brigham and Women's Hospital, Boston, MA, USA
| | - Frank Tacke
- Department of Hepatology & Gastroenterology, Charité University Medical Center, Berlin, Germany
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9
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Jung HJ, Kim SM, Kim DH, Bang E, Kang D, Lee S, Chun P, Moon HR, Chung HY. 2,4-Dihydroxyphenyl-benzo[d]thiazole (MHY553), a synthetic PPARα agonist, decreases age-associated inflammatory responses through PPARα activation and RS scavenging in the skin. Exp Gerontol 2020; 143:111153. [PMID: 33189833 DOI: 10.1016/j.exger.2020.111153] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 11/06/2020] [Accepted: 11/09/2020] [Indexed: 12/16/2022]
Abstract
We previously reported that 2,4-dihydroxyphenyl-benzo[d]thiazole (MHY553) is a PPARα agonist, which has been shown to inhibit tyrosinase activity in murine melanocyte and alleviate hepatic steatosis in aged rats. This study investigated the effects of MHY553 on the age-related occurrence of inflammatory responses via the molecular modulation of the nuclear factor-κB (NF-κB) signaling pathway in the skin of aged rats and skin fibroblast cells. Moreover, we investigated the antioxidant effect of MHY553 via in vitro assays of reactive oxygen species (ROS) and peroxynitrite (ONOO-) scavenging activities. We also scrutinized the ability of MHY553 as a PPARα activator in aged rat skin and H2O2-induced Hs27 fibroblast cells. In vivo experiments were performed in young, aged, and MHY553-fed aged rats (3 mg or 5 mg∙kg -1∙day -1 for 4 weeks). MHY553 dose-dependently scavenged ROS and ONOO-. Furthermore, we found that MHY553 suppressed the NF-κB transcription factor and downregulated mitogen-activated protein kinase (MAPK)/activator protein-1 (AP-1) signaling. MHY553 also inhibited the expression of pro-inflammatory cytokines including COX-2, iNOS, IL-1β, and IL-6. Our findings indicate the MHY553 scavenges ROS/reactive nitrogen species and inhibits inflammatory cytokines through PPARα activation in the skin. Thus, these results suggest that MHY553 may be of therapeutic interest for protecting skin from oxidative stress-induced damage and intrinsic aging.
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Affiliation(s)
- Hee Jin Jung
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 46241, Republic of Korea
| | - Seong Min Kim
- Research Institute of Life Science and College of Veterinary Medicine, Gyeongsang National University, Jinju, Gyeongsang 52828, Republic of Korea
| | - Dae Hyun Kim
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 46241, Republic of Korea
| | - EunJin Bang
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 46241, Republic of Korea
| | - Dongwan Kang
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 46241, Republic of Korea
| | - Sanggwon Lee
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 46241, Republic of Korea
| | - Pusoon Chun
- College of Pharmacy and Inje Institute of Pharmaceutical Sciences and Research, Inje University, Gimhae 47392, Republic of Korea
| | - Hyung Ryong Moon
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 46241, Republic of Korea.
| | - Hae Young Chung
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 46241, Republic of Korea.
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10
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Özbeyli D, Gürler EB, Buzcu H, Çilingir-Kaya ÖT, Çam ME, Yüksel M. Astaxanthin alleviates oxidative damage in acute pancreatitis via direct antioxidant mechanisms. TURKISH JOURNAL OF GASTROENTEROLOGY 2020; 31:706-712. [PMID: 33169708 DOI: 10.5152/tjg.2020.19520] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND/AIMS Astaxanthin (ATX) is a naturally occurring carotenoid and a potent antioxidant. Various anti-inflammatory effects of ATX have been examined. We aimed to investigate the protective effect of ATX and its mechanism in a cerulein-induced acute pancreatitis rat model. MATERIALS AND METHODS The rats were randomized into 2 main groups as control (C) and acute pancreatitis group (AP). AP group was subsequently divided into subgroups as AP+vehicle (AP), AP+ATX, and ATX+peroxisome proliferator-activated receptor-alpha antagonist GW6471 (ATX+GW) groups. To induce AP, the rats were administered cerulein (50 µg/kg, intraperitonally [ip]) at 1 hour intervals, whereas the C group received saline. The AP group was treated with vehicle olive oil, ATX 40 mg/kg/orally, or GW6471 and ATX (GW1 mg/kg/ip; ATX; 40 mg/kg/peroral). Treatments were administered after the 1st cerulein injection. At the 7th hour after the final injection, the rats were killed and the pancreatic tissue was used for the determination of malondialdehyde (MDA), glutathione (GSH), and myeloperoxidase (MPO) activities and luminol-lucigenin chemiluminescence levels. Serum amylase, lipase, and histopathological analyses were performed. RESULTS Elevated serum lipase and amylase levels in the vehicle-treated AP group (p<0.01) decreased in the ATX and ATX+GW groups (p<0.05). In the AP groups, GSH was reduced and MDA, MPO, luminol, and lucigenin levels were increased (p<0.05-0.001). ATX reversed these changes (p<0.05-0.001). The vehicle-treated group revealed significant severe cytoplasmic degeneration and vacuolization, whereas ATX ameliorated these destructions. GW6471 did not abolish the positive effects of ATX biochemically or histologically. CONCLUSION ATX has a potent protective effect on AP via its radical scavenging and antioxidant properties. Therefore, we believe that ATX may have therapeutic potential.
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Affiliation(s)
- Dilek Özbeyli
- Department of Medical Pathological Techniques, Marmara University, Vocational School of Health Services, İstanbul, Turkey
| | - Esra Bihter Gürler
- Department of Physiology, Atlas University School of Medicine, İstanbul, Turkey
| | - Hülya Buzcu
- Department of Physiology, Marmara University School of Medicine, İstanbul, Turkey
| | | | - Muhammet Emin Çam
- Department of Pharmacology, Marmara University School of Pharmacy, İstanbul, Turkey; University College London, Department of Mechanical Engineering,Torrington Place, London, UK
| | - Meral Yüksel
- Department of Medical Laboratory Techniques, Marmara University Vocational School of Health Services, İstanbul, Turkey
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11
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Pirozzi C, Lama A, Annunziata C, Cavaliere G, De Caro C, Citraro R, Russo E, Tallarico M, Iannone M, Ferrante MC, Mollica MP, Mattace Raso G, De Sarro G, Calignano A, Meli R. Butyrate prevents valproate-induced liver injury: In vitro and in vivo evidence. FASEB J 2019; 34:676-690. [PMID: 31914696 DOI: 10.1096/fj.201900927rr] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 10/30/2019] [Accepted: 10/31/2019] [Indexed: 12/29/2022]
Abstract
Sodium valproate (VPA), an antiepileptic drug, may cause dose- and time-dependent hepatotoxicity. However, its iatrogenic molecular mechanism and the rescue therapy are disregarded. Recently, it has been demonstrated that sodium butyrate (NaB) reduces hepatic steatosis, improving respiratory capacity and mitochondrial dysfunction in obese mice. Here, we investigated the protective effect of NaB in counteracting VPA-induced hepatotoxicity using in vitro and in vivo models. Human HepG2 cells and primary rat hepatocytes were exposed to high VPA concentration and treated with NaB. Mitochondrial function, lipid metabolism, and oxidative stress were evaluated, using Seahorse analyzer, spectrophotometric, and biochemical determinations. Liver protection by NaB was also evaluated in VPA-treated epileptic WAG/Rij rats, receiving NaB for 6 months. NaB prevented VPA toxicity, limiting cell oxidative and mitochondrial damage (ROS, malondialdehyde, SOD activity, mitochondrial bioenergetics), and restoring fatty acid oxidation (peroxisome proliferator-activated receptor α expression and carnitine palmitoyl-transferase activity) in HepG2 cells, primary hepatocytes, and isolated mitochondria. In vivo, NaB confirmed its activity normalizing hepatic biomarkers, fatty acid metabolism, and reducing inflammation and fibrosis induced by VPA. These data support the protective potential of NaB on VPA-induced liver injury, indicating it as valid therapeutic approach in counteracting this common side effect due to VPA chronic treatment.
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Affiliation(s)
- Claudio Pirozzi
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Adriano Lama
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Chiara Annunziata
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Gina Cavaliere
- Department of Biology, University of Naples Federico II, Naples, Italy
| | - Carmen De Caro
- Department of Health Sciences, University of Catanzaro "Magna Graecia", Catanzaro, Italy
| | - Rita Citraro
- Department of Health Sciences, University of Catanzaro "Magna Graecia", Catanzaro, Italy
| | - Emilio Russo
- Department of Health Sciences, University of Catanzaro "Magna Graecia", Catanzaro, Italy
| | - Martina Tallarico
- CNR, Institute of Neurological Sciences, Pharmacology Section, Roccelletta di Borgia, Catanzaro, Italy
| | - Michelangelo Iannone
- CNR, Institute of Neurological Sciences, Pharmacology Section, Roccelletta di Borgia, Catanzaro, Italy
| | - Maria Carmela Ferrante
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | | | | | | | - Antonio Calignano
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Rosaria Meli
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
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12
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Luo M, Huang S, Zhang J, Zhang L, Mehmood K, Jiang J, Zhang N, Zhou D. Effect of selenium nanoparticles against abnormal fatty acid metabolism induced by hexavalent chromium in chicken's liver. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:21828-21834. [PMID: 31134545 DOI: 10.1007/s11356-019-05397-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Accepted: 05/06/2019] [Indexed: 06/09/2023]
Abstract
The effect of selenium on excessive fatty acid-induced apoptosis and abnormal amino acid metabolism in the liver is well known, because it is an important site in the fatty acid metabolism pathway. However, the protective role of nano-elemental selenium (nano-Se) supplementation against hexavalent chromium (K2Cr2O7)-induced abnormal fatty acid metabolism has not been evaluated yet. Therefore, we conducted chicken experiments with different nano-Se supplementation doses to investigate the role of nano-Se against Cr(VI)-induced adverse effects. For this purpose, a total of 120 1-day-old chicks were randomly divided into control group, Cr(VI)-exposed group, protection group, treatment group, prevention group, and nano-Se control group. The results of RT-qPCR showed that the nano-Se supplementation notably downregulated (P < 0.01) the messenger RNA (mRNA) expression levels of fatty acid synthase (FASN), whereas nano-Se supplementation significantly upregulated (P < 0.01) the mRNA expression level of acyl-coenzyme A oxidase 1 (ACOX1) in chicken's liver at day 35 of the experiment. Similar results were further verified by western blot analysis. Moreover, nano-Se supplementation significantly enhanced and reduced the antibody expression levels of ACOX1 and FASN in immunohistochemical analysis, respectively. Thus, finally, it was concluded that nano-Se can alleviate K2Cr2O7-induced abnormal fatty acid metabolism in chicken's liver.
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Affiliation(s)
- Min Luo
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Shucheng Huang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, People's Republic of China
| | - Jialu Zhang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Lihong Zhang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Khalid Mehmood
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
- University College of Veterinary and Animal Sciences, Islamia University of Bahawalpur, Bahawalpur, Punjab, 63100, Pakistan
| | - Jinhuan Jiang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Niya Zhang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Donghai Zhou
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China.
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13
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Disease Progression and Pharmacological Intervention in a Nutrient-Deficient Rat Model of Nonalcoholic Steatohepatitis. Dig Dis Sci 2019; 64:1238-1256. [PMID: 30511198 PMCID: PMC6548202 DOI: 10.1007/s10620-018-5395-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 11/22/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND There is a marked need for improved animal models of nonalcoholic steatohepatitis (NASH) to facilitate the development of more efficacious drug therapies for the disease. METHODS Here, we investigated the development of fibrotic NASH in male Wistar rats fed a choline-deficient L-amino acid-defined (CDAA) diet with or without cholesterol supplementation for subsequent assessment of drug treatment efficacy in NASH biopsy-confirmed rats. The metabolic profile and liver histopathology were evaluated after 4, 8, and 12 weeks of dieting. Subsequently, rats with biopsy-confirmed NASH were selected for pharmacological intervention with vehicle, elafibranor (30 mg/kg/day) or obeticholic acid (OCA, 30 mg/kg/day) for 5 weeks. RESULTS The CDAA diet led to marked hepatomegaly and fibrosis already after 4 weeks of feeding, with further progression of collagen deposition and fibrogenesis-associated gene expression during the 12-week feeding period. Cholesterol supplementation enhanced the stimulatory effect of CDAA on gene transcripts associated with fibrogenesis without significantly increasing collagen deposition. Pharmacological intervention with elafibranor, but not OCA, significantly reduced steatohepatitis scores, and fibrosis-associated gene expression, however, was unable to prevent progression in fibrosis scores. CONCLUSION CDAA-fed rats develop early-onset progressive NASH, which offers the opportunity to probe anti-NASH compounds with potential disease-modifying properties.
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14
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Huang WC, Chen YL, Liu HC, Wu SJ, Liou CJ. Ginkgolide C reduced oleic acid-induced lipid accumulation in HepG2 cells. Saudi Pharm J 2018; 26:1178-1184. [PMID: 30532639 PMCID: PMC6260475 DOI: 10.1016/j.jsps.2018.07.006] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Accepted: 07/19/2018] [Indexed: 12/12/2022] Open
Abstract
Ginkgolide C, isolated from Ginkgo biloba, is a diterpene lactone that has multiple biological functions and can improve Alzheimer disease and platelet aggregation. Ginkgolide C also inhibits adipogenesis in 3T3-L1 adipocytes. The present study evaluated whether ginkgolide C reduced lipid accumulation and regulated the molecular mechanism of lipogenesis in oleic acid-induced HepG2 hepatocytes. HepG2 cells were treated with 0.5 mM oleic acid for 48 h to induce a fatty liver cell model. Then, the cells were exposed to various concentrations of ginkgolide C for 24 h. Staining with Oil Red O and the fluorescent dye BODIPY 493/503 revealed that ginkgolide C significantly reduced excessive lipid accumulation in HepG2 cells. Ginkgolide C decreased peroxisome proliferator-activated receptor γ and sterol regulatory element-binding protein 1c to block the expression of fatty acid synthase. Ginkgolide C treatment also promoted the expression of adipose triglyceride lipase and the phosphorylation level of hormone-sensitive lipase to enhance the decomposition of triglycerides. In addition, ginkgolide C stimulated CPT-1 to activate fatty acid β-oxidation, significantly increased sirt1 and phosphorylation of AMP-activated protein kinase (AMPK), and decreased expression of acetyl-CoA carboxylase for suppressed fatty acid synthesis in hepatocytes. Taken together, our results suggest that ginkgolide C reduced lipid accumulation and increased lipolysis through the sirt1/AMPK pathway in oleic acid-induced fatty liver cells.
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Affiliation(s)
- Wen-Chung Huang
- Graduate Institute of Health Industry Technology, Research Center for Food and Cosmetic Safety, Research Center for Chinese Herbal Medicine, College of Human Ecology, Chang Gung University of Science and Technology, No. 261, Wenhua 1st Rd., Guishan Dist., Taoyuan City 33303, Taiwan
- Division of Allergy, Asthma, and Rheumatology, Department of Pediatrics, Chang Gung Memorial Hospital, Linkou, Guishan Dist., Taoyuan City 33303, Taiwan
| | - Ya-Ling Chen
- Department of Nutrition and Health Sciences, Chang Gung University of Science and Technology, No. 261, Wenhua 1st Rd., Guishan Dist., Taoyuan City 33303, Taiwan
| | - Hui-Chia Liu
- Department of Nutrition and Health Sciences, Chang Gung University of Science and Technology, No. 261, Wenhua 1st Rd., Guishan Dist., Taoyuan City 33303, Taiwan
| | - Shu-Ju Wu
- Department of Nutrition and Health Sciences, Chang Gung University of Science and Technology, No. 261, Wenhua 1st Rd., Guishan Dist., Taoyuan City 33303, Taiwan
- Aesthetic Medical Center, Department of Dermatology, Chang Gung Memorial Hospital, Linkou, Guishan Dist., Taoyuan 33303, Taiwan
| | - Chian-Jiun Liou
- Division of Allergy, Asthma, and Rheumatology, Department of Pediatrics, Chang Gung Memorial Hospital, Linkou, Guishan Dist., Taoyuan City 33303, Taiwan
- Department of Nursing, Research Center for Chinese Herbal Medicine, Chang Gung University of Science and Technology, No. 261, Wenhua 1st Rd., Guishan Dist., Taoyuan City 33303, Taiwan
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15
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Hepatoprotective Effects of MHY3200 on High-Fat, Diet-Induced, Non-Alcoholic Fatty Liver Disease in Rats. Molecules 2018; 23:molecules23082057. [PMID: 30115876 PMCID: PMC6222757 DOI: 10.3390/molecules23082057] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 08/03/2018] [Accepted: 08/10/2018] [Indexed: 02/06/2023] Open
Abstract
This study investigated the effects of 2-(4-(5-chlorobenzo[d]thiazol-2-yl)phenoxy)-2,2-difluoroacetic acid (MHY3200) on high-fat diet (HFD)-induced hepatic lipid accumulation and inflammation. The measurement of peroxisome proliferator-activated receptor (PPAR)α activity by using a luciferase assay indicated that MHY3200 was more potent than a known PPARα agonist, WY14643, in AC2F cells. Six-month-old male SD rats were fed chow or HFD for 1 month, and after, with or without added MHY3200 (1 or 2 mg/kg/day) for 4 weeks. The oral administration of MHY3200 caused a significant decrease in serum triglyceride (TG), glucose, alanine aminotransferase, and insulin, as well as a slight decrease in the level of free fatty acid and aspartate transaminase. No weight gain was detected when compared with HFD rats, and hepatic TG content was also attenuated by the administration of MHY3200. Furthermore, phosphorylation of the ER stress marker, inositol-requiring kinase 1 and its downstream gene, c-Jun N-terminal kinase, in addition to serine phosphorylation of insulin receptor substrate 1 were suppressed by MHY3200. Consistent with these results, MHY3200 administration reduced the levels of activation of protein-1, cyclooxygenase-2, and inducible nitric oxide synthase. Our results suggested that MHY3200 ameliorated HFD-induced hepatic lipid accumulation and inflammation, and improved insulin resistance through PPARα activation.
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16
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Huang L, Liu J, Zhang XO, Sibley K, Najjar SM, Lee MM, Wu Q. Inhibition of protein arginine methyltransferase 5 enhances hepatic mitochondrial biogenesis. J Biol Chem 2018; 293:10884-10894. [PMID: 29773653 DOI: 10.1074/jbc.ra118.002377] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 05/01/2018] [Indexed: 11/06/2022] Open
Abstract
Protein arginine methyltransferase 5 (PRMT5) regulates gene expression either transcriptionally by symmetric dimethylation of arginine residues on histones H4R3, H3R8, and H2AR3 or at the posttranslational level by methylation of nonhistone target proteins. Although emerging evidence suggests that PRMT5 functions as an oncogene, its role in metabolic diseases is not well-defined. We investigated the role of PRMT5 in promoting high-fat-induced hepatic steatosis. A high-fat diet up-regulated PRMT5 levels in the liver but not in other metabolically relevant tissues such as skeletal muscle or white and brown adipose tissue. This was associated with repression of master transcription regulators involved in mitochondrial biogenesis. In contrast, lentiviral short hairpin RNA-mediated reduction of PRMT5 significantly decreased phosphatidylinositol 3-kinase/AKT signaling in mouse AML12 liver cells. PRMT5 knockdown or knockout decreased basal AKT phosphorylation but boosted the expression of peroxisome proliferator-activated receptor α (PPARα) and PGC-1α with a concomitant increase in mitochondrial biogenesis. Moreover, by overexpressing an exogenous WT or enzyme-dead mutant PRMT5 or by inhibiting PRMT5 enzymatic activity with a small-molecule inhibitor, we demonstrated that the enzymatic activity of PRMT5 is required for regulation of PPARα and PGC-1α expression and mitochondrial biogenesis. Our results suggest that targeting PRMT5 may have therapeutic potential for the treatment of fatty liver.
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Affiliation(s)
- Lei Huang
- From the Department of Pediatrics, University of Massachusetts Medical School, Worcester, Massachusetts 01655
| | - Jehnan Liu
- the Center for Diabetes and Endocrine Research, College of Medicine and Life Sciences, University of Toledo, Toledo, Ohio 43606
| | - Xiao-Ou Zhang
- the Program in Bioinformatics and Integrative Biology, University of Massachusetts Medical School, Worcester, Massachusetts 01655
| | - Katelyn Sibley
- the Department of Biochemistry, Worcester Polytechnic Institute, Worcester, Massachusetts 01609, and
| | - Sonia M Najjar
- the Center for Diabetes and Endocrine Research, College of Medicine and Life Sciences, University of Toledo, Toledo, Ohio 43606.,the Department of Biomedical Sciences, Heritage College of Osteopathic Medicine, Ohio University, Athens, Ohio 45701
| | - Mary M Lee
- From the Department of Pediatrics, University of Massachusetts Medical School, Worcester, Massachusetts 01655,
| | - Qiong Wu
- From the Department of Pediatrics, University of Massachusetts Medical School, Worcester, Massachusetts 01655,
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