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MiR-125b-2 knockout increases high-fat diet-induced fat accumulation and insulin resistance. Sci Rep 2020; 10:21969. [PMID: 33319811 PMCID: PMC7738482 DOI: 10.1038/s41598-020-77714-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Accepted: 11/09/2020] [Indexed: 12/26/2022] Open
Abstract
Obese individuals are more susceptible to comorbidities than individuals of healthy weight, including cardiovascular disease and metabolic disorders. MicroRNAs are a class of small and noncoding RNAs that are implicated in the regulation of chronic human diseases. We previously reported that miR-125b plays a critical role in adipogenesis in vitro. However, the involvement of miR-125b-2 in fat metabolism in vivo remains unknown. In the present study, miR-125b-2 knockout mice were generated using CRISPR/CAS9 technology, resulting in mice with a 7 bp deletion in the seed sequence of miR-125b-2. MiR-125b-2 knockout increased the weight of liver tissue, epididymal white fat and inguinal white fat. MiR-125b-2 knockout also increased adipocyte volume in HFD-induced obese mice, while there were no significant differences in body weight and feed intake versus mice fed a normal diet. Additionally, qRT-PCR and western blot analysis revealed that the expression of the miR-125b-2 target gene SCD-1 and fat synthesis-associated genes, such as PPARγ and C/EBPα, were significantly up-regulated in miR-125b-2KO mice (P < 0.05). Moreover, miR-125b-2KO altered HFD-induced changes in glucose tolerance and insulin resistance. In conclusion, we show that miR-125b-2 is a novel potential target for regulating fat accumulation, and also a candidate target to develop novel treatment strategies for obesity and diabetes.
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52
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Li X, Wang H. Multiple organs involved in the pathogenesis of non-alcoholic fatty liver disease. Cell Biosci 2020; 10:140. [PMID: 33372630 PMCID: PMC7720519 DOI: 10.1186/s13578-020-00507-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 11/27/2020] [Indexed: 02/08/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) represents the leading cause of chronic liver disease worldwide and the anticipated health burden is huge. There are limited therapeutic approaches for NAFLD now. It’s imperative to get a better understanding of the disease pathogenesis if new treatments are to be discovered. As the hepatic manifestation of metabolic syndrome, this disease involves complex interactions between different organs and regulatory pathways. It’s increasingly clear that brain, gut and adipose tissue all contribute to NAFLD pathogenesis and development, in view of their roles in energy homeostasis. In the present review, we try to summarize currently available data regarding NAFLD pathogenesis and to lay a particular emphasis on the inter-organ crosstalk evidence.
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Affiliation(s)
- Xiaoyan Li
- Department of Oncology, the First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China
| | - Hua Wang
- Department of Oncology, the First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China. .,Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, 230032, China.
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53
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Shepherd EL, Karim S, Newsome PN, Lalor PF. Inhibition of vascular adhesion protein-1 modifies hepatic steatosis in vitro and in vivo. World J Hepatol 2020; 12:931-948. [PMID: 33312420 PMCID: PMC7701969 DOI: 10.4254/wjh.v12.i11.931] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/23/2020] [Accepted: 09/15/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Non-alcoholic fatty liver disease (NAFLD) is associated with obesity, insulin resistance and dyslipidaemia and currently is estimated to affect up to a third of all individuals in developed countries. Current standard of care for patients varies according to disease stage, but includes lifestyle interventions common insulin sensitizers, antioxidants and lipid modifiers. However, to date specific therapies have shown little histological or fibrosis stage improvement in large clinical trials, and there is still no licensed therapy for NAFLD. Given the high prevalence, limited treatment options and significant screening costs for the general population, new treatments are urgently required.
AIM To assess the potential for inhibition of the amine oxidase enzyme vascular adhesion protein-1 (VAP-1) to modify hepatic lipid accumulation in NAFLD.
METHODS We have used immunochemical and qPCR analysis to document expression of VAP-1 and key functional proteins and transporters across the NAFLD spectrum. We then utilised hepatocytes in culture and human precision cut liver slices in concert with selective enzyme activity inhibitors to test the effects of activating the semicarbazide-sensitive amine oxidase activity of VAP-1 on hepatic lipid uptake and triglyceride export. A murine model of NAFLD was also used to determine the consequences of VAP-1 knockout and gene expression arrays were used to quantify the effects of VAP-1 activity on key lipid modifying and proinflammatory gene expression.
RESULTS We confirmed that increasing severity of NAFLD and progression to cirrhosis was associated with a significant increase in hepatocellular VAP-1 expression. Hepatocytes in vitro exposed to recombinant VAP-1 and its substrate methylamine showed increased lipid accumulation as determined by quantification of Oil Red O uptake. This was recapitulated using hydrogen peroxide, and lipid accumulation was accompanied by changes in expression of the lipid transporter molecules FABP3, FATP6, insulin receptor subunits and PPARα. Human liver tissue exposed to recombinant VAP-1 or substrates for endo/exogenous VAP-1 produced less triglyceride than untreated tissue and demonstrated an increase in steatosis. This response could be inhibited by using bromoethylamine to inhibit the SSAO activity of VAP-1, and mice deficient in VAP-1/AOC3 also demonstrated reduced steatosis on high fat diet. Exposure of human liver tissue to methylamine to activate VAP-1 resulted in increased expression of FABP2 and 4, FATP3-5, caveolin-1, VLDLR, PPARGC1 and genes associated with the inflammatory response.
CONCLUSION Our data confirm that the elevations in hepatic VAP-1 expression reported in nonalcoholic steatohepatitis can contribute to steatosis, metabolic disturbance and inflammation. This suggests that targeting the semicarbazide sensitive amine oxidase capacity of VAP-1 may represent a useful adjunct to other therapeutic strategies in NAFLD.
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Affiliation(s)
- Emma L Shepherd
- Centre for Liver and Gastroenterology Research, Birmingham National Institute for Health Research, Birmingham Biomedical Research Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham B15 2TT, West Midlands, United Kingdom
| | - Sumera Karim
- Centre for Liver and Gastroenterology Research, Birmingham National Institute for Health Research, Birmingham Biomedical Research Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham B15 2TT, West Midlands, United Kingdom
| | - Philip N Newsome
- Centre for Liver and Gastroenterology Research, Birmingham National Institute for Health Research, Birmingham Biomedical Research Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham B15 2TT, West Midlands, United Kingdom
- Liver Unit, Queen Elizabeth Hospital, University Hospitals Birmingham, Birmingham B15 2TT, West Midlands, United Kingdom
| | - Patricia F Lalor
- Centre for Liver and Gastroenterology Research, Birmingham National Institute for Health Research, Birmingham Biomedical Research Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham B15 2TT, West Midlands, United Kingdom
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54
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Shepherd EL, Saborano R, Northall E, Matsuda K, Ogino H, Yashiro H, Pickens J, Feaver RE, Cole BK, Hoang SA, Lawson MJ, Olson M, Figler RA, Reardon JE, Nishigaki N, Wamhoff BR, Günther UL, Hirschfield G, Erion DM, Lalor PF. Ketohexokinase inhibition improves NASH by reducing fructose-induced steatosis and fibrogenesis. JHEP Rep 2020; 3:100217. [PMID: 33490936 PMCID: PMC7807164 DOI: 10.1016/j.jhepr.2020.100217] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 10/30/2020] [Accepted: 11/08/2020] [Indexed: 02/07/2023] Open
Abstract
Background & Aims Increasing evidence highlights dietary fructose as a major driver of non-alcoholic fatty liver disease (NAFLD) pathogenesis, the majority of which is cleared on first pass through the hepatic circulation by enzymatic phosphorylation to fructose-1-phosphate via the ketohexokinase (KHK) enzyme. Without a current approved therapy, disease management emphasises lifestyle interventions, but few patients adhere to such strategies. New targeted therapies are urgently required. Methods We have used a unique combination of human liver specimens, a murine dietary model of NAFLD and human multicellular co-culture systems to understand the hepatocellular consequences of fructose administration. We have also performed a detailed nuclear magnetic resonance-based metabolic tracing of the fate of isotopically labelled fructose upon administration to the human liver. Results Expression of KHK isoforms is found in multiple human hepatic cell types, although hepatocyte expression predominates. KHK knockout mice show a reduction in serum transaminase, reduced steatosis and altered fibrogenic response on an Amylin diet. Human co-cultures exposed to fructose exhibit steatosis and activation of lipogenic and fibrogenic gene expression, which were reduced by pharmacological inhibition of KHK activity. Analysis of human livers exposed to 13C-labelled fructose confirmed that steatosis, and associated effects, resulted from the accumulation of lipogenic precursors (such as glycerol) and enhanced glycolytic activity. All of these were dose-dependently reduced by administration of a KHK inhibitor. Conclusions We have provided preclinical evidence using human livers to support the use of KHK inhibition to improve steatosis, fibrosis, and inflammation in the context of NAFLD. Lay summary We have used a mouse model, human cells, and liver tissue to test how exposure to fructose can cause the liver to store excess fat and become damaged and scarred. We have then inhibited a key enzyme within the liver that is responsible for fructose metabolism. Our findings show that inhibition of fructose metabolism reduces liver injury and fibrosis in mouse and human livers and thus this may represent a potential route for treating patients with fatty liver disease in the future.
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Key Words
- ALD, alcohol-related cirrhosis
- ALT, alanine transaminase
- APRI, AST to Platelet Ratio Index
- AST, aspartate transaminase
- BEC, biliary epithelial cells
- BSA, bovine serum albumin
- CT, computed tomography
- DNL, de novo lipogenesis
- FIB4, fibrosis-4
- Fibrosis
- Fructose
- G/F, glucose/fructose
- HSCs, hepatic stellate cells
- HSECs, hepatic sinusoidal endothelial cells
- HSQC, heteronuclear single quantum coherence
- IGF, insulin-like growth factor
- KHK, ketohexokinase
- KO, knockout
- LGLI, low glucose and insulin
- Metabolism
- NAFLD
- NAFLD, non-alcoholic fatty liver disease
- NASH
- NASH, non-alcoholic steatohepatitis
- NPCs, non-parenchymal cells
- PBC, primary biliary cholangitis
- PDGF, platelet-derived growth factor
- PSC, primary sclerosing cholangitis
- TG, triglyceride
- TGFB, transforming growth factor beta
- TIMP-1, Tissue Inhibitor of Matrix metalloproteinase-1
- Treatment
- WT, wild-type
- aLMF, activated liver myofibroblasts
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Affiliation(s)
- Emma L Shepherd
- Centre for Liver and Gastroenterology Research and National Institute for Health Research (NIHR) Birmingham Biomedical Research Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK
| | - Raquel Saborano
- Centre for Liver and Gastroenterology Research and National Institute for Health Research (NIHR) Birmingham Biomedical Research Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK
| | - Ellie Northall
- Centre for Liver and Gastroenterology Research and National Institute for Health Research (NIHR) Birmingham Biomedical Research Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK
| | - Kae Matsuda
- Takeda Pharmaceuticals Cardiovascular and Metabolic Drug Discovery Unit, Kanagawa, Japan
| | - Hitomi Ogino
- Takeda Pharmaceuticals Cardiovascular and Metabolic Drug Discovery Unit, Kanagawa, Japan
| | - Hiroaki Yashiro
- Takeda Pharmaceuticals Gastroenterology Drug Discovery Unit, Cambridge, MA, USA
| | - Jason Pickens
- Takeda Pharmaceuticals Gastroenterology Drug Discovery Unit, Cambridge, MA, USA
| | | | | | | | | | | | | | | | - Nobuhiro Nishigaki
- Takeda Pharmaceuticals Cardiovascular and Metabolic Drug Discovery Unit, Kanagawa, Japan
| | | | - Ulrich L Günther
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, UK
| | - Gideon Hirschfield
- Centre for Liver and Gastroenterology Research and National Institute for Health Research (NIHR) Birmingham Biomedical Research Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK.,Toronto Centre for Liver Disease, University of Toronto, Toronto General Hospital, Toronto, Canada
| | - Derek M Erion
- Takeda Pharmaceuticals Gastroenterology Drug Discovery Unit, Cambridge, MA, USA
| | - Patricia F Lalor
- Centre for Liver and Gastroenterology Research and National Institute for Health Research (NIHR) Birmingham Biomedical Research Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK
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55
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Associations between dietary total antioxidant capacity and odds of non-alcoholic fatty liver disease (NAFLD) in adults: a case-control study. J Nutr Sci 2020; 9:e48. [PMID: 33244400 PMCID: PMC7681134 DOI: 10.1017/jns.2020.39] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 09/01/2020] [Accepted: 09/02/2020] [Indexed: 02/06/2023] Open
Abstract
The relationships between the total antioxidant capacity (TAC) of the diet and the risk of non-alcoholic fatty liver disease (NAFLD) have not previously been assessed. The aim of this study was to assess relationships between DTAC and odds of NAFLD in a case–control study. This case–control study was carried out in 158 patients with NAFLD and 357 healthy individuals aged 18–55 years. Dietary data were collected using validated 168-item quantitative food frequency questionnaires. Triacylglycerols (TAGs), total cholesterol (TC), high-density lipoprotein (HDL-C), low-density lipoprotein (LDL-C) and fasting blood glucose (FBS) concentrations were assessed using enzymatic methods and commercial kits. The DTAC was calculated based on the oxygen radical absorbance capacity of each food reported by the U.S. Department of Agriculture. The mean ± sd (standard deviation) for age and body mass index (BMI) of the study participants were 43⋅9 years ±5⋅9 and had 30⋅5 kg/m2 ±2⋅6. The NAFLD patients included higher BMI and female proportion, compared with the control group. The NAFLD patients included higher smoking rates, biochemical parameters (TG, TC, LDL-C and FBS) and DTAC scores, compared with control groups (P-value < 0⋅05). However, patients with NAFLD had lower HDL levels and physical activities, compared with the control group. The highest tertile of DTAC showed lower odds of NAFLD, compared with the lowest tertile. This association was significant after adjustment for potential confounders (OR, 0⋅19; 95 % CI, 0⋅9–0⋅34; P for trend 0⋅001). Findings suggest that the promotion of naturally increased antioxidant capacities may help prevent odds of NAFLD.
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56
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Herrera JJ, Louzon S, Pifer K, Leander D, Merrihew GE, Park JH, Szczesniak K, Whitson J, Wilkinson JE, Fiehn O, MacCoss MJ, Day SM, Miller RA, Garratt M. Acarbose has sex-dependent and -independent effects on age-related physical function, cardiac health, and lipid biology. JCI Insight 2020; 5:137474. [PMID: 32990683 PMCID: PMC7710286 DOI: 10.1172/jci.insight.137474] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 09/23/2020] [Indexed: 11/17/2022] Open
Abstract
With an expanding aging population burdened with comorbidities, there is considerable interest in treatments that optimize health in later life. Acarbose (ACA), a drug used clinically to treat type 2 diabetes mellitus (T2DM), can extend mouse life span with greater effect in males than in females. Using a genetically heterogeneous mouse model, we tested the ability of ACA to ameliorate functional, pathological, and biochemical changes that occur during aging, and we determined which of the effects of age and drug were sex dependent. In both sexes, ACA prevented age-dependent loss of body mass, in addition to improving balance/coordination on an accelerating rotarod, rotarod endurance, and grip strength test. Age-related cardiac hypertrophy was seen only in male mice, and this male-specific aging effect was attenuated by ACA. ACA-sensitive cardiac changes were associated with reduced activation of cardiac growth-promoting pathways and increased abundance of peroxisomal proteins involved in lipid metabolism. ACA further ameliorated age-associated changes in cardiac lipid species, particularly lysophospholipids - changes that have previously been associated with aging, cardiac dysfunction, and cardiovascular disease in humans. In the liver, ACA had pronounced effects on lipid handling in both sexes, reducing hepatic lipidosis during aging and shifting the liver lipidome in adulthood, particularly favoring reduced triglyceride (TAG) accumulation. Our results demonstrate that ACA, already in clinical use for T2DM, has broad-ranging antiaging effects in multiple tissues, and it may have the potential to increase physical function and alter lipid biology to preserve or improve health at older ages.
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Affiliation(s)
- Jonathan J Herrera
- Department of Molecular & Integrative Physiology, University of Michigan (UM), Ann Arbor, Michigan, USA
| | - Sean Louzon
- Department of Molecular & Integrative Physiology, University of Michigan (UM), Ann Arbor, Michigan, USA
| | - Kaitlyn Pifer
- Department of Pathology, UM Medical School, Ann Arbor, Michigan, USA
| | - Danielle Leander
- Department of Pathology, UM Medical School, Ann Arbor, Michigan, USA
| | | | | | - Kate Szczesniak
- Department of Molecular & Integrative Physiology, University of Michigan (UM), Ann Arbor, Michigan, USA
| | - Jeremy Whitson
- Department of Pathology, University of Washington, Seattle, Washington, USA
| | - John E Wilkinson
- Unit for Laboratory Animal Medicine and Department of Pathology, UM, Ann Arbor, Michigan, USA
| | | | | | - Sharlene M Day
- Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Richard A Miller
- Department of Pathology, UM Medical School, Ann Arbor, Michigan, USA.,UM Geriatrics Center, Ann Arbor, Michigan, USA
| | - Michael Garratt
- Department of Pathology, UM Medical School, Ann Arbor, Michigan, USA.,Department of Anatomy, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
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Velázquez AM, Roglans N, Bentanachs R, Gené M, Sala-Vila A, Lázaro I, Rodríguez-Morató J, Sánchez RM, Laguna JC, Alegret M. Effects of a Low Dose of Caffeine Alone or as Part of a Green Coffee Extract, in a Rat Dietary Model of Lean Non-Alcoholic Fatty Liver Disease without Inflammation. Nutrients 2020; 12:nu12113240. [PMID: 33113993 PMCID: PMC7690747 DOI: 10.3390/nu12113240] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 10/20/2020] [Accepted: 10/21/2020] [Indexed: 12/16/2022] Open
Abstract
Non-alcoholic fatty liver disease is a highly prevalent condition without specific pharmacological treatment, characterized in the initial stages by hepatic steatosis. It was suggested that lipid infiltration in the liver might be reduced by caffeine through anti-inflammatory, antioxidative, and fatty acid metabolism-related mechanisms. We investigated the effects of caffeine (CAF) and green coffee extract (GCE) on hepatic lipids in lean female rats with steatosis. For three months, female Sprague-Dawley rats were fed a standard diet or a cocoa butter-based high-fat diet plus 10% liquid fructose. In the last month, the high-fat diet was supplemented or not with CAF or a GCE, providing 5 mg/kg of CAF. Plasma lipid levels and the hepatic expression of molecules involved in lipid metabolism were determined. Lipidomic analysis was performed in liver samples. The diet caused hepatic steatosis without obesity, inflammation, endoplasmic reticulum stress, or hepatic insulin resistance. Neither CAF nor GCE alleviated hepatic steatosis, but GCE-treated rats showed lower hepatic triglyceride levels compared to the CAF group. The GCE effects could be related to reductions of hepatic (i) mTOR phosphorylation, leading to higher nuclear lipin-1 levels and limiting lipogenic gene expression; (ii) diacylglycerol levels; (iii) hexosylceramide/ceramide ratios; and (iv) very-low-density lipoprotein receptor expression. In conclusion, a low dose of CAF did not reduce hepatic steatosis in lean female rats, but the same dose provided as a green coffee extract led to lower liver triglyceride levels.
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Affiliation(s)
- Ana Magdalena Velázquez
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, School of Pharmacy and Food Science, University of Barcelona, Avda Joan XXIII 27-31, 08028 Barcelona, Spain; (A.M.V.); (N.R.); (R.B.); (M.G.); (R.M.S.)
| | - Núria Roglans
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, School of Pharmacy and Food Science, University of Barcelona, Avda Joan XXIII 27-31, 08028 Barcelona, Spain; (A.M.V.); (N.R.); (R.B.); (M.G.); (R.M.S.)
- Institute of Biomedicine, University of Barcelona, 08028 Barcelona, Spain
- Spanish Biomedical Research Centre in Physiopathology of Obesity and Nutrition (CIBEROBN), Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain;
| | - Roger Bentanachs
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, School of Pharmacy and Food Science, University of Barcelona, Avda Joan XXIII 27-31, 08028 Barcelona, Spain; (A.M.V.); (N.R.); (R.B.); (M.G.); (R.M.S.)
| | - Maria Gené
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, School of Pharmacy and Food Science, University of Barcelona, Avda Joan XXIII 27-31, 08028 Barcelona, Spain; (A.M.V.); (N.R.); (R.B.); (M.G.); (R.M.S.)
| | - Aleix Sala-Vila
- IMIM-Hospital del Mar Medical Research Institute, 08003 Barcelona, Spain; (A.S.-V.); (I.L.)
- Barcelonaβeta Brain Research Center, Pasqual Maragall Foundation, 08005 Barcelona, Spain
| | - Iolanda Lázaro
- IMIM-Hospital del Mar Medical Research Institute, 08003 Barcelona, Spain; (A.S.-V.); (I.L.)
| | - Jose Rodríguez-Morató
- Spanish Biomedical Research Centre in Physiopathology of Obesity and Nutrition (CIBEROBN), Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain;
- IMIM-Hospital del Mar Medical Research Institute, 08003 Barcelona, Spain; (A.S.-V.); (I.L.)
- Department of Experimental and Health Sciences, Universitat Pompeu Fabra (CEXS-UPF), 08003 Barcelona, Spain
| | - Rosa María Sánchez
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, School of Pharmacy and Food Science, University of Barcelona, Avda Joan XXIII 27-31, 08028 Barcelona, Spain; (A.M.V.); (N.R.); (R.B.); (M.G.); (R.M.S.)
- Institute of Biomedicine, University of Barcelona, 08028 Barcelona, Spain
- Spanish Biomedical Research Centre in Physiopathology of Obesity and Nutrition (CIBEROBN), Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain;
| | - Juan Carlos Laguna
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, School of Pharmacy and Food Science, University of Barcelona, Avda Joan XXIII 27-31, 08028 Barcelona, Spain; (A.M.V.); (N.R.); (R.B.); (M.G.); (R.M.S.)
- Institute of Biomedicine, University of Barcelona, 08028 Barcelona, Spain
- Spanish Biomedical Research Centre in Physiopathology of Obesity and Nutrition (CIBEROBN), Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain;
- Correspondence: (J.C.L.); (M.A.); Tel.: +34-93-4024531 (M.A.)
| | - Marta Alegret
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, School of Pharmacy and Food Science, University of Barcelona, Avda Joan XXIII 27-31, 08028 Barcelona, Spain; (A.M.V.); (N.R.); (R.B.); (M.G.); (R.M.S.)
- Institute of Biomedicine, University of Barcelona, 08028 Barcelona, Spain
- Spanish Biomedical Research Centre in Physiopathology of Obesity and Nutrition (CIBEROBN), Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain;
- Correspondence: (J.C.L.); (M.A.); Tel.: +34-93-4024531 (M.A.)
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Hu Y, Yin F, Liu Z, Xie H, Xu Y, Zhou D, Zhu B. Acerola polysaccharides ameliorate high-fat diet-induced non-alcoholic fatty liver disease through reduction of lipogenesis and improvement of mitochondrial functions in mice. Food Funct 2020; 11:1037-1048. [PMID: 31819934 DOI: 10.1039/c9fo01611b] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Acerola polysaccharides (ACPs) were purified from acerola (Malpighia emarginata DC.), a tropical fruit with strong antioxidant and anti-inflammatory activities. However, the biological activities of ACPs have barely been investigated. The present study was designed to investigate the efficacy of ACPs in the treatment of high-fat diet (HFD)-induced nonalcoholic fatty liver disease (NAFLD) in C57BL/6 mice. Male C57BL/6 mice were fed with a high-fat diet and treated with different doses of ACPs for 9 continuous weeks. NAFLD was examined in terms of body weight, lipid profiles, liver function markers, and histology. Gene expression was determined by using both qRT-PCR and western blot. Our results showed that administration of ACPs significantly reduced HFD-induced hyperlipidemia and hepatic lipid deposition by inhibiting the SREBP1c pathway in mice. ACP treatment normalized oxidative stress by activating nuclear factor (erythroid-derived-2)-like 2 (Nrf2) and reduced the expressions of pro-inflammatory cytokines in HFD fed mice. Furthermore, ACPs reduced uncoupling protein 2 (UCP2) expression, restored mitochondrial ATP content, increased mitochondrial complex I, IV, and V activity, and increased mitochondrial beta-oxidation by stimulating peroxisomal proliferator-activated receptor-gamma coactivator-1α (PGC-1α) in the liver of HFD-fed mice. Our study indicated that ACPs may be an effective dietary supplement for preventing HFD-induced NAFLD by regulating lipogenesis, reducing inflammation and oxidative stress, and promoting the mitochondrial function.
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Affiliation(s)
- Yuanyuan Hu
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, PR China.
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59
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Zhang AR, Sun J, He Y, Wang N, Tian L. Attenuation of lipid accumulation in Bel-7402 cells through ADPN/AMPKα signaling stimulated by Fructus rosae laxae extract. J Food Biochem 2020; 44:e13497. [PMID: 33029846 DOI: 10.1111/jfbc.13497] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 09/05/2020] [Accepted: 09/09/2020] [Indexed: 12/29/2022]
Abstract
In this work, a comparison study was conducted on the contents of total flavonoids and hyperoside in different polarity extracts of Fructus rosae laxae (FRL). The lipid-lowering effect and mechanism of FRL ethyl acetate extract (FRLE) on the lipid accumulation model of Bel-7402 cells in vitro were studied. The results showed that the contents of total flavonoids and hyperoside in FRLE were significantly higher than those in the other polarity extracts. Compared with those in the model group, the levels of triglyceride and total cholesterol decreased, the activities of superoxide dismutase and lactate dehydrogenase increased, and the levels of inflammatory factors interleukin-6 and tumor necrosis factor-α decreased significantly in the cells intervened with FRLE. Moreover, FRLE can regulate lipid metabolism by activating the AMP-activated protein kinase α phosphorylation pathway and increasing the expression of adiponectin. PRACTICAL APPLICATIONS: Fructus rosae laxae (FRL) is an edible medicinal fruit with multiple biological activities, such as antioxidation, anti-inflammatory, and hepatoprotective properties. However, the lipid-lowering activity of FRL and its mechanism of action have not yet been investigated. Our data indicate that the FRL extract, which contains high levels of antioxidant and anti-inflammatory components, plays a beneficial role in regulating lipid metabolism disorders, mainly by regulating the expression of proteins involved in the ADPN/AMPK signaling pathway, and reduces the release of inflammatory factors. Thus, the FRL extract effectively reduces the accumulation of free fatty acids (FFA) in vitro and exhibits considerable potential for the prevention and treatment lipid metabolism disorders.
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Affiliation(s)
- Ai-Rong Zhang
- College of Traditional Chinese Medicine, Xinjiang Medical University, Urumqi, P.R.China
| | - Jing Sun
- College of Traditional Chinese Medicine, Xinjiang Medical University, Urumqi, P.R.China
| | - Yuan He
- College of Traditional Chinese Medicine, Xinjiang Medical University, Urumqi, P.R.China
| | - Ning Wang
- College of Traditional Chinese Medicine, Xinjiang Medical University, Urumqi, P.R.China
| | - Li Tian
- College of Traditional Chinese Medicine, Xinjiang Medical University, Urumqi, P.R.China
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Gliozzi M, Musolino V, Bosco F, Scicchitano M, Scarano F, Nucera S, Zito MC, Ruga S, Carresi C, Macrì R, Guarnieri L, Maiuolo J, Tavernese A, Coppoletta AR, Nicita C, Mollace R, Palma E, Muscoli C, Belzung C, Mollace V. Cholesterol homeostasis: Researching a dialogue between the brain and peripheral tissues. Pharmacol Res 2020; 163:105215. [PMID: 33007421 DOI: 10.1016/j.phrs.2020.105215] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 09/23/2020] [Accepted: 09/24/2020] [Indexed: 02/07/2023]
Abstract
Cholesterol homeostasis is a highly regulated process in human body because of its several functions underlying the biology of cell membranes, the synthesis of all steroid hormones and bile acids and the need of trafficking lipids destined to cell metabolism. In particular, it has been recognized that peripheral and central nervous system cholesterol metabolism are separated by the blood brain barrier and are regulated independently; indeed, peripherally, it depends on the balance between dietary intake and hepatic synthesis on one hand and its degradation on the other, whereas in central nervous system it is synthetized de novo to ensure brain physiology. In view of this complex metabolism and its relevant functions in mammalian, impaired levels of cholesterol can induce severe cellular dysfunction leading to metabolic, cardiovascular and neurodegenerative diseases. The aim of this review is to clarify the role of cholesterol homeostasis in health and disease highlighting new intriguing aspects of the cross talk between its central and peripheral metabolism.
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Affiliation(s)
- Micaela Gliozzi
- Institute of Research for Food Safety & Health (IRC-FSH) - Department of Health Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy.
| | - Vincenzo Musolino
- Institute of Research for Food Safety & Health (IRC-FSH) - Department of Health Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy.
| | - Francesca Bosco
- Institute of Research for Food Safety & Health (IRC-FSH) - Department of Health Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy.
| | - Miriam Scicchitano
- Institute of Research for Food Safety & Health (IRC-FSH) - Department of Health Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy.
| | - Federica Scarano
- Institute of Research for Food Safety & Health (IRC-FSH) - Department of Health Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy.
| | - Saverio Nucera
- Institute of Research for Food Safety & Health (IRC-FSH) - Department of Health Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy.
| | - Maria Caterina Zito
- Institute of Research for Food Safety & Health (IRC-FSH) - Department of Health Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy.
| | - Stefano Ruga
- Institute of Research for Food Safety & Health (IRC-FSH) - Department of Health Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy.
| | - Cristina Carresi
- Institute of Research for Food Safety & Health (IRC-FSH) - Department of Health Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy.
| | - Roberta Macrì
- Institute of Research for Food Safety & Health (IRC-FSH) - Department of Health Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy.
| | - Lorenza Guarnieri
- Institute of Research for Food Safety & Health (IRC-FSH) - Department of Health Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy.
| | - Jessica Maiuolo
- Institute of Research for Food Safety & Health (IRC-FSH) - Department of Health Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy.
| | - Annamaria Tavernese
- Division of Cardiology, University Hospital Policlinico Tor Vergata, Rome, Italy.
| | - Anna Rita Coppoletta
- Institute of Research for Food Safety & Health (IRC-FSH) - Department of Health Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy.
| | - Caterina Nicita
- Institute of Research for Food Safety & Health (IRC-FSH) - Department of Health Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy.
| | - Rocco Mollace
- Institute of Research for Food Safety & Health (IRC-FSH) - Department of Health Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy.
| | - Ernesto Palma
- Institute of Research for Food Safety & Health (IRC-FSH) - Department of Health Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy.
| | - Carolina Muscoli
- Institute of Research for Food Safety & Health (IRC-FSH) - Department of Health Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy; IRCCS San Raffaele Pisana, Via di Valcannuta, Rome, Italy.
| | | | - Vincenzo Mollace
- Institute of Research for Food Safety & Health (IRC-FSH) - Department of Health Sciences, University "Magna Graecia" of Catanzaro, Catanzaro, Italy; IRCCS San Raffaele Pisana, Via di Valcannuta, Rome, Italy.
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Bimro ET, Hovav R, Nyska A, Glazer TA, Madar Z. High oleic peanuts improve parameters leading to fatty liver development and change the microbiota in mice intestine. Food Nutr Res 2020; 64:4278. [PMID: 33033472 PMCID: PMC7520627 DOI: 10.29219/fnr.v64.4278] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 04/20/2020] [Accepted: 05/18/2020] [Indexed: 12/11/2022] Open
Abstract
Background Oleic-acid consumption can possibly prevent or delay metabolic diseases. In Israel, a Virginia-type peanut cultivar with a high content of oleic acid has been developed. Objective This study examined the effect of consuming high oleic peanuts (D7) on the development of fatty liver compared to the standard HN strain. Design The two peanut cultivars were added to normal diet (ND) and high-fat (HF) mouse diet. Male C57BL/6 mice were fed for 8 and 10 weeks on a 4% D7, 4% HN, or control diet. At the end of the experiments, blood and tissues were collected. Triglyceride, lipid levels, histology, and protein expression were examined. The diets’ effects on intestinal microbiota were also evaluated. Results Both D7 and HFD7 led to a reduction in plasma triglycerides. Lipids, triglycerides, and free fatty acids in the liver were low in diets containing D7. Additionally, CD36 expression decreased in the D7 group. Consumption of D7 led to higher Prevotella levels, and consumption of ND that contained HN or D7 led to a lower Firmicutes/Bacteroidetes ratio. Conclusion These findings suggest that consumption of peanuts high in oleic acid (D7) may have the potential to delay primary fatty liver symptoms.
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Affiliation(s)
- Elise Taieb Bimro
- Institute of Biochemistry, Food Science and Nutrition, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Ran Hovav
- Department of Field Crops and Vegetables Research, Plant Sciences Institute, Agricultural Research Organization, Bet-Dagan, Israel
| | - Abraham Nyska
- Toxicologic Pathology, Timrat and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Tal Assa Glazer
- Institute of Biochemistry, Food Science and Nutrition, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Zecharia Madar
- Institute of Biochemistry, Food Science and Nutrition, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
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Sohouli M, Fatahi S. Associations between Dietary Total Antioxidant Capacity and Risk of Nonalcoholic Fatty Liver Disease (NAFLD) in Adults: A Case-Control Study. NUTRITION AND FOOD SCIENCES RESEARCH 2020. [DOI: 10.29252/nfsr.7.3.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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63
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Sinn DH, Kang D, Chang Y, Ryu S, Cho SJ, Paik SW, Song YB, Pastor-Barriuso R, Guallar E, Cho J, Gwak GY. Non-alcoholic fatty liver disease and the incidence of myocardial infarction: A cohort study. J Gastroenterol Hepatol 2020; 35:833-839. [PMID: 31512278 DOI: 10.1111/jgh.14856] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 08/19/2019] [Accepted: 09/08/2019] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND AIM Non-alcoholic fatty liver disease (NAFLD) is a multisystem disease associated with an increased risk of cardiovascular disease (CVD), diabetes, and chronic kidney disease. Indeed, CVD is the most common cause of death in NAFLD patients. This study aimed to evaluate the association between NAFLD and the risk of incident myocardial infarction. METHODS This is a retrospective cohort study involving 111 492 adults over 40 years old without history of CVD, liver disease, or cancer at baseline who participated in a regular health screening exam between 2003 and 2013. Fatty liver was diagnosed by ultrasonography. RESULTS During 725 706.9 person-years of follow-up, 183 participants developed myocardial infarction (incidence rate 0.3 cases per 1000 person-years). The age, sex, and year of visit-adjusted hazard ratio (HR) for incident myocardial infarction comparing participants with NAFLD with those without it was 2.14 (95% confidence interval 1.59, 2.89). This association remained significant in fully adjusted models (HR 1.54; 95% confidence interval 1.11, 2.14). Compared with participants without NAFLD, in participants with low NAFLD fibrosis score (NFS) (< -1.455) and with intermediate-to-high NFS (≥ -1.455), the fully adjusted HRs for incident myocardial infarction were 1.70 (1.22, 2.36) and 1.88 (1.24, 2.87), respectively. CONCLUSION In this large cohort study, NAFLD was associated with an increased incidence of myocardial infarction independently of established risk factors. In addition, this association was similar in participants with and without evidence of more advanced NAFLD as indicated by the NFS. NAFLD patients may need to be carefully monitored and managed early to prevent myocardial infarction.
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Affiliation(s)
- Dong Hyun Sinn
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Danbee Kang
- Department of Clinical Research Design and Evaluation, SAIHST, Sungkyunkwan University, Seoul, Korea
| | - Yoosoo Chang
- Center for Total Health Studies, Kangbuk Samsung Hospital, Seoul, Korea
| | - Seungho Ryu
- Center for Total Health Studies, Kangbuk Samsung Hospital, Seoul, Korea
| | - Soo Jin Cho
- Center for Health Promotion, Samsung Medical Center, Seoul, Korea
| | - Seung Woon Paik
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Young Bin Song
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Roberto Pastor-Barriuso
- National Center for Epidemiology, Instituto de Salud Carlos III, Madrid, Spain.,Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Eliseo Guallar
- Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University, Seoul, Korea.,Departments of Epidemiology and Medicine, and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Juhee Cho
- Department of Clinical Research Design and Evaluation, SAIHST, Sungkyunkwan University, Seoul, Korea.,Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University, Seoul, Korea.,Departments of Epidemiology and Medicine, and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Geum-Youn Gwak
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Ibrahim KG, Chivandi E, Nkomozepi P, Matumba MG, Mukwevho E, Erlwanger KH. The long-term protective effects of neonatal administration of curcumin against nonalcoholic steatohepatitis in high-fructose-fed adolescent rats. Physiol Rep 2020; 7:e14032. [PMID: 30912307 PMCID: PMC6692695 DOI: 10.14814/phy2.14032] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 02/27/2019] [Accepted: 03/01/2019] [Indexed: 12/15/2022] Open
Abstract
There is an increased prevalence of nonalcoholic steatohepatitis (NASH) in adolescents. The suckling period is developmentally plastic, affecting later health outcomes. We investigated whether neonatal administration of curcumin would provide protection against the development of NASH later in adolescence in rats fed a high-fructose diet. From postnatal day (PN) 6 to PN 21, the pups (N = 128) were allocated to four groups and orally gavaged daily with either 0.5% dimethyl sulfoxide solution (vehicle control), curcumin (500 mg·kg-1 ), fructose (20%, w/v) or curcumin and fructose combined. All the pups were weaned and half the rats in each group had tap water, whereas the other received fructose (20%) as their drinking fluid ad libitum for 6 weeks. The rats' liver NASH scores, lipid content, and RNA gene expression ratios of AMPKα and TNFα were determined. Hepatic lipid content was similar across the treatment groups in the males (P > 0.05, ANOVA). In the females, the hepatic lipid content in the treatment groups ranged from 2.7 to 4.3%. The livers of male and female rats that had fructose either as neonates and/or postweaning had significantly marked inflammation (P = 0.0112, Kruskal-Wallis) and fibrosis (P < 0.0001, ANOVA) which were attenuated by curcumin. The hepatic gene expression ratios for AMPKα in both sexes were significantly downregulated (P < 0.0001, ANOVA), whereas the expression ratios of TNFα were significantly upregulated (P < 0.0001) in rats fed a high-fructose diet pre and/or postweaning compared to the other groups. Neonatal curcumin administration is a potential natural pharmacological candidate for the prevention of NASH.
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Affiliation(s)
- Kasimu G Ibrahim
- School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.,Department of Physiology, Faculty of Basic Medical Sciences, College of Health Sciences, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - Eliton Chivandi
- School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Pilani Nkomozepi
- Department of Human Anatomy and Physiology, Faculty of Health Sciences, University of Johannesburg, Doornfontein, Johannesburg, South Africa
| | - Mashudu G Matumba
- Department of Biochemistry, Faculty of Natural Sciences & Agriculture, North-West University, Mmabatho, Mafikeng, South Africa
| | - Emmanuel Mukwevho
- Department of Biochemistry, Faculty of Natural Sciences & Agriculture, North-West University, Mmabatho, Mafikeng, South Africa
| | - Kennedy H Erlwanger
- School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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Opazo-Ríos L, Mas S, Marín-Royo G, Mezzano S, Gómez-Guerrero C, Moreno JA, Egido J. Lipotoxicity and Diabetic Nephropathy: Novel Mechanistic Insights and Therapeutic Opportunities. Int J Mol Sci 2020; 21:E2632. [PMID: 32290082 PMCID: PMC7177360 DOI: 10.3390/ijms21072632] [Citation(s) in RCA: 161] [Impact Index Per Article: 40.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 04/07/2020] [Accepted: 04/08/2020] [Indexed: 02/06/2023] Open
Abstract
Lipotoxicity is characterized by the ectopic accumulation of lipids in organs different from adipose tissue. Lipotoxicity is mainly associated with dysfunctional signaling and insulin resistance response in non-adipose tissue such as myocardium, pancreas, skeletal muscle, liver, and kidney. Serum lipid abnormalities and renal ectopic lipid accumulation have been associated with the development of kidney diseases, in particular diabetic nephropathy. Chronic hyperinsulinemia, often seen in type 2 diabetes, plays a crucial role in blood and liver lipid metabolism abnormalities, thus resulting in increased non-esterified fatty acids (NEFA). Excessive lipid accumulation alters cellular homeostasis and activates lipogenic and glycogenic cell-signaling pathways. Recent evidences indicate that both quantity and quality of lipids are involved in renal damage associated to lipotoxicity by activating inflammation, oxidative stress, mitochondrial dysfunction, and cell-death. The pathological effects of lipotoxicity have been observed in renal cells, thus promoting podocyte injury, tubular damage, mesangial proliferation, endothelial activation, and formation of macrophage-derived foam cells. Therefore, this review examines the recent preclinical and clinical research about the potentially harmful effects of lipids in the kidney, metabolic markers associated with these mechanisms, major signaling pathways affected, the causes of excessive lipid accumulation, and the types of lipids involved, as well as offers a comprehensive update of therapeutic strategies targeting lipotoxicity.
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Affiliation(s)
- Lucas Opazo-Ríos
- Renal, Vascular and Diabetes Research Laboratory, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), 28040 Madrid, Spain; (L.O.-R.); (G.M.-R.); (C.G.-G.); (J.E.)
| | - Sebastián Mas
- Renal, Vascular and Diabetes Research Laboratory, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), 28040 Madrid, Spain; (L.O.-R.); (G.M.-R.); (C.G.-G.); (J.E.)
| | - Gema Marín-Royo
- Renal, Vascular and Diabetes Research Laboratory, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), 28040 Madrid, Spain; (L.O.-R.); (G.M.-R.); (C.G.-G.); (J.E.)
| | - Sergio Mezzano
- Laboratorio de Nefrología, Facultad de Medicina, Universidad Austral de Chile, 5090000 Valdivia, Chile;
| | - Carmen Gómez-Guerrero
- Renal, Vascular and Diabetes Research Laboratory, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), 28040 Madrid, Spain; (L.O.-R.); (G.M.-R.); (C.G.-G.); (J.E.)
| | - Juan Antonio Moreno
- Department of Cell Biology, Physiology and Immunology, University of Cordoba, 14004 Cordoba, Spain
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), University of Cordoba, 14004 Cordoba, Spain
- Hospital Universitario Reina Sofía, 14004 Cordoba, Spain
| | - Jesús Egido
- Renal, Vascular and Diabetes Research Laboratory, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), 28040 Madrid, Spain; (L.O.-R.); (G.M.-R.); (C.G.-G.); (J.E.)
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Faheem SA, Saeed NM, El-Naga RN, Ayoub IM, Azab SS. Hepatoprotective Effect of Cranberry Nutraceutical Extract in Non-alcoholic Fatty Liver Model in Rats: Impact on Insulin Resistance and Nrf-2 Expression. Front Pharmacol 2020; 11:218. [PMID: 32256346 PMCID: PMC7093716 DOI: 10.3389/fphar.2020.00218] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 02/14/2020] [Indexed: 12/15/2022] Open
Abstract
Background Non-alcoholic fatty liver disease (NAFLD) is a pathological accumulation of triglycerides (TGs) in the hepatocyte in the absence of alcohol intake. Untreated NAFLD is expected to progress into liver fibrosis. Cranberry is rich in polyphenols with antioxidant and anti-inflammatory activities. Hypothesis The present study was performed to evaluate our hypothesis of the possible anti-fibrotic effect of cranberry nutraceuticals in a high fat cholesterol diet induced (HFCD)-NAFLD in rats, focusing on improving insulin sensitivity and modulating the expression of nuclear factor erythroid-2-related factor-2 (Nrf2) (a transcription factor responsible for regulating cellular redox balance). Method Male albino wistar rats (12 weeks) received HFCD and/or cranberry (50 and 100 mg/kg/day, three times/week) orally for 8 consecutive weeks. Results In comparison to the HFCD group, cranberry treated groups (50 and 100 mg/kg) showed marked hepatoprotection, where it significantly decreased liver enzymes (alanine transaminases by 49 and 64% and aspartate transaminases by 45 and 64%; respectively), TGs, and ameliorated the histopathological alterations (such as inflammatory cells infiltration and ballooning degeneration) induced by HFCD. Cranberry also alleviated oxidative stress (malondialdehyde, glutathione, catalase and superoxide dismutase) and inflammation (tumor necrosis factor- alpha, interleukine-6 and nuclear factor kappa-b) and significantly reduced the HOMA-IR and TyG index. On the other hand, cranberry treated groups (50 and 100 mg/kg) showed a marked increase in the expression of adiponectin, by 8 and 13-fold, insulin receptor substrate-2 by 21 and 79%, and Nrf2 by 13 and 61%, respectively. Notably, cranberry significantly reduced the fibrotic markers, TGF–β and α-SMA expression and collagen deposition. Conclusion The present study showed that cranberry significantly attenuated NAFLD, in a dose dependent manner, which could be partially recognized by its antioxidant, anti-inflammatory activities, and its ability to improve insulin sensitivity. Notably, our study proves for the first time that the anti-fibrotic activity of cranberry is promising.
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Affiliation(s)
- Safaa A Faheem
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Egyptian Russian University, Cairo, Egypt
| | - Noha M Saeed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Egyptian Russian University, Cairo, Egypt
| | - Reem N El-Naga
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | - Iriny M Ayoub
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | - Samar S Azab
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
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Latorre J, Ortega FJ, Liñares-Pose L, Moreno-Navarrete JM, Lluch A, Comas F, Oliveras-Cañellas N, Ricart W, Höring M, Zhou Y, Liebisch G, Nidhina Haridas PA, Olkkonen VM, López M, Fernández-Real JM. Compounds that modulate AMPK activity and hepatic steatosis impact the biosynthesis of microRNAs required to maintain lipid homeostasis in hepatocytes. EBioMedicine 2020; 53:102697. [PMID: 32143184 PMCID: PMC7056650 DOI: 10.1016/j.ebiom.2020.102697] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 02/03/2020] [Accepted: 02/16/2020] [Indexed: 12/12/2022] Open
Abstract
Background While the impact of metformin in hepatocytes leads to fatty acid (FA) oxidation and decreased lipogenesis, hepatic microRNAs (miRNAs) have been associated with fat overload and impaired metabolism, contributing to the pathogenesis of non-alcoholic fatty liver disease (NAFLD). Methods We investigated the expression of hundreds of miRNAs in primary hepatocytes challenged by compounds modulating steatosis, palmitic acid and compound C (as inducers), and metformin (as an inhibitor). Then, additional hepatocyte and rodent models were evaluated, together with transient mimic miRNAs transfection, lipid droplet staining, thin-layer chromatography, quantitative lipidomes, and mitochondrial activity, while human samples outlined the translational significance of this work. Findings Our results show that treatments triggering fat accumulation and AMPK disruption may compromise the biosynthesis of hepatic miRNAs, while the knockdown of the miRNA-processing enzyme DICER in human hepatocytes exhibited increased lipid deposition. In this context, the ectopic recovery of miR-30b and miR-30c led to significant changes in genes related to FA metabolism, consistent reduction of ceramides, higher mitochondrial activity, and enabled β-oxidation, redirecting FA metabolism from energy storage to expenditure. Interpretation Current findings unravel the biosynthesis of hepatic miR-30b and miR-30c in tackling inadequate FA accumulation, offering a potential avenue for the treatment of NAFLD. Funding Instituto de Salud Carlos III (ISCIII), Govern de la Generalitat (PERIS2016), Associació Catalana de Diabetis (ACD), Sociedad Española de Diabetes (SED), Fondo Europeo de Desarrollo Regional (FEDER), Xunta de Galicia, Ministerio de Economía y Competitividad (MINECO), “La Caixa” Foundation, and CIBER de la Fisiopatología de la Obesidad y Nutrición (CIBEROBN).
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Affiliation(s)
- Jèssica Latorre
- Institut d'Investigació Biomèdica de Girona (IDIBGI), Girona, Spain; CIBER de la Fisiología de la Obesidad y la Nutrición (CIBEROBN), Madrid, Spain; Department of Diabetes, Endocrinology and Nutrition (UDEN), Hospital of Girona "Dr Josep Trueta", Girona, Spain
| | - Francisco J Ortega
- Institut d'Investigació Biomèdica de Girona (IDIBGI), Girona, Spain; CIBER de la Fisiología de la Obesidad y la Nutrición (CIBEROBN), Madrid, Spain; Department of Diabetes, Endocrinology and Nutrition (UDEN), Hospital of Girona "Dr Josep Trueta", Girona, Spain.
| | - Laura Liñares-Pose
- Department of Physiology, CiMUS, University of Santiago de Compostela, Instituto de Investigación Sanitaria, Santiago de Compostela, Spain
| | - José M Moreno-Navarrete
- Institut d'Investigació Biomèdica de Girona (IDIBGI), Girona, Spain; CIBER de la Fisiología de la Obesidad y la Nutrición (CIBEROBN), Madrid, Spain; Department of Diabetes, Endocrinology and Nutrition (UDEN), Hospital of Girona "Dr Josep Trueta", Girona, Spain
| | - Aina Lluch
- Institut d'Investigació Biomèdica de Girona (IDIBGI), Girona, Spain; Department of Diabetes, Endocrinology and Nutrition (UDEN), Hospital of Girona "Dr Josep Trueta", Girona, Spain
| | - Ferran Comas
- Institut d'Investigació Biomèdica de Girona (IDIBGI), Girona, Spain; CIBER de la Fisiología de la Obesidad y la Nutrición (CIBEROBN), Madrid, Spain; Department of Diabetes, Endocrinology and Nutrition (UDEN), Hospital of Girona "Dr Josep Trueta", Girona, Spain
| | - Núria Oliveras-Cañellas
- Institut d'Investigació Biomèdica de Girona (IDIBGI), Girona, Spain; Department of Diabetes, Endocrinology and Nutrition (UDEN), Hospital of Girona "Dr Josep Trueta", Girona, Spain
| | - Wifredo Ricart
- Institut d'Investigació Biomèdica de Girona (IDIBGI), Girona, Spain; CIBER de la Fisiología de la Obesidad y la Nutrición (CIBEROBN), Madrid, Spain; Department of Diabetes, Endocrinology and Nutrition (UDEN), Hospital of Girona "Dr Josep Trueta", Girona, Spain
| | - Marcus Höring
- Institute of Clinical Chemistry and Laboratory Medicine, Regensburg University Hospital, Regensburg, Germany
| | - You Zhou
- Systems Immunity Research Institute, Cardiff University, Cardiff, United Kingdom; Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
| | - Gerhard Liebisch
- Institute of Clinical Chemistry and Laboratory Medicine, Regensburg University Hospital, Regensburg, Germany
| | - P A Nidhina Haridas
- Minerva Foundation Institute for Medical Research, Biomedicum 2 U, Helsinki, Finland
| | - Vesa M Olkkonen
- Minerva Foundation Institute for Medical Research, Biomedicum 2 U, Helsinki, Finland; Department of Anatomy, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Miguel López
- Department of Physiology, CiMUS, University of Santiago de Compostela, Instituto de Investigación Sanitaria, Santiago de Compostela, Spain.
| | - José M Fernández-Real
- Institut d'Investigació Biomèdica de Girona (IDIBGI), Girona, Spain; CIBER de la Fisiología de la Obesidad y la Nutrición (CIBEROBN), Madrid, Spain; Department of Diabetes, Endocrinology and Nutrition (UDEN), Hospital of Girona "Dr Josep Trueta", Girona, Spain.
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Shen SH, Zhong TY, Peng C, Fang J, Lv B. Structural modulation of gut microbiota during alleviation of non-alcoholic fatty liver disease with Gynostemma pentaphyllum in rats. BMC Complement Med Ther 2020; 20:34. [PMID: 32024509 PMCID: PMC7076883 DOI: 10.1186/s12906-020-2835-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 01/27/2020] [Indexed: 02/06/2023] Open
Abstract
Background The current work aimed to assess whether Gynostemma pentaphyllum (GP), a Chinese herbal medicine, structurally modifies the gut microbiota in rats during non-alcoholic fatty liver disease (NAFLD) treatment. Methods High-fat diet (HFD)-induced NAFLD rats were orally administered water decoction of GP or equal amounts of distilled water per day for 4 weeks. Liver tissues were examined by histopathological observation, while intestinal tissues were examined by both histopathological and ultrastructural observations. The levels of fasting blood glucose (FBG), fasting serum insulin (FINS), total cholesterol (TC), triglycerides (TG), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), alanine transaminase (ALT) and aspartate transaminase (AST) were measured by enzymatic method. The levels of toll-like receptor 4 (TLR-4), tumor necrosis factor-alpha (TNF-α), interleukin-1-beta (IL-1β) and interleukin-6 (IL-6) in both serum and hepatic tissues were measured by RT-qPCR. The protein expression level of TLR-4 in hepatic tissues was detected by western blot. The gut microbiota was assessed by 16S rRNA-based microbiota analysis. Results GP maintained intestinal integrity and reversed gut dysbiosis in high-fat diet (HFD)-induced NAFLD rats. This also reduced the ratio of Firmicutes to Bacteroidetes, enriching the abundance of beneficial bacteria (Lactococcus spp.) and inhibiting the abundance of pathogenic bacteria (Ruminococcus spp.) in the gut. The levels of pro-inflammatory cytokines (TNF-α, IL-1β and IL-6) and the expression of TLR4 were downregulated (P < 0.05), while the insulin resistance index, HOMA-IR showed improvement by GP treatment (P < 0.05). Liver function indicators (ALT and AST) were remarkably decreased (P < 0.01). Besides, GP treatment reduced TG and LDL-C levels (P < 0.05), and increased HDL-C level (P < 0.05) compared with NAFLD group. Conclusion The structural alterations of gut microbiota induced by GP are associated with NAFLD alleviation.
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Affiliation(s)
- Shu-Hua Shen
- Department of Healthcare Management, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, 310006, China
| | - Ting-Yan Zhong
- School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Cui Peng
- School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Jie Fang
- Laboratory Animal Centre, Zhejiang Academy of Medical Science, Hangzhou, 310000, China
| | - Bin Lv
- Department of Gastroenterology, The First Affiliated Hospital of Zhejiang Chinese Medical University, 54 Youdian Road, Zhejiang, 310006, Hangzhou, China.
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Liu F, Kong Y. GLP-1 receptor agonist on cardiovascular complications of diabetes mellitus. Exp Ther Med 2020; 19:2259-2265. [PMID: 32104292 DOI: 10.3892/etm.2020.8439] [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: 08/06/2019] [Accepted: 12/03/2019] [Indexed: 12/18/2022] Open
Abstract
Effects of glucagon-like peptide-1 (GLP-1) receptor agonist on cardiovascular complications of diabetes mellitus (DM) were investigated. In total, 132 DM patients treated in Tengzhou Central People's Hospital from April 2013 to September 2016 were included. Of these, 71 cases treated with basic drugs plus GLP-1 were the research group, and 61 cases treated with glipizide controlled release tablets the control group. The improvement of clinical efficacy of patients in the two groups after treatment was observed. The concentrations of FPG, HbAlc, TC, LDL-C, and HDL-C in serum of patients in the two groups before and after treatment were compared, and the incidence rate of cardiovascular disease complications of diabetes was recorded. Expression of FPG, HbAlc, TC, LDL-C, and HDL-C of patients in the two groups were further detected. ROC curve was drawn to analyze its predictive value. In terms of markedly effective treatment rate and overall effective rate, the research group was significantly better than the control group (P<0.05). After treatment, the concentrations of FPG, HbAlc, TC, LDL-C, and HDL-C in serum of patients in the research group were significantly lower than those in the control group (P<0.05). The incidence rate of cardiovascular diseases and residual vascular risks in the research group were significantly higher than those in the control group (P<0.05). After treatment, the AUC of FPG, HbAlc, TC, LDL-C, and HDL-C in serum for predicting cardiovascular complications in DM patients were, respectively, 0.742, 0.780, 0.737, 0.726, and 0.721. In conclusion, GLP-1 receptor agonist can improve the clinical efficacy of patients. Through ROC curve, FPG, HbAlc, TC, LDL-C and HDL-C can be used as predictors of cardiovascular complications in DM patients, which has high clinical value.
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Affiliation(s)
- Fengjun Liu
- Department of Cardiovascular Medicine (II), Tengzhou Central People's Hospital, Tengzhou, Shandong 277500, P.R. China
| | - Yanhua Kong
- Department of Internal Medicine, Tengzhou Central People's Hospital, Tengzhou, Shandong 277500, P.R. China
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Maâlej S, Jedidi S, Hannachi H, Gharsalli H, Sahnoun I, Neji H, El Gharbi L. Prévalence et facteurs de risque de stéatose hépatique chez les adultes tunisiens atteints de syndrome d’apnées hypopnées obstructives du sommeil. Rev Mal Respir 2020; 37:8-14. [DOI: 10.1016/j.rmr.2019.11.643] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 10/07/2019] [Indexed: 11/24/2022]
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Steatosis and gut microbiota dysbiosis induced by high-fat diet are reversed by 1-week chow diet administration. Nutr Res 2019; 71:72-88. [PMID: 31757631 DOI: 10.1016/j.nutres.2019.09.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 08/26/2019] [Accepted: 09/13/2019] [Indexed: 12/12/2022]
Abstract
Many studies have recently shown that diet and its impact on gut microbiota are closely related to obesity and metabolic diseases including nonalcoholic fatty liver disease. Gut microbiota may be an important intermediate link, causing gastrointestinal and metabolic diseases under the influence of changes in diet and genetic predisposition. The aim of this study was to assess the reversibility of liver phenotype in parallel with exploring the resilience of the mice gut microbiota by switching high-fat diet (HFD) to chow diet (CD). Mice were fed an HF for 8 weeks. A part of the mice was euthanized, whereas the rest were then fed a CD. These mice were euthanized after 3 and 7 days of feeding with CD, respectively. Gut microbiota composition, serum parameters, and liver morphology were assessed. Eight weeks of HFD treatment induced marked liver steatosis in mice with a perturbed microbiome. Interestingly, only 7 days of CD was enough to recover the liver to a normal status, whereas the microbiome was accordingly reshaped to a close to initial pattern. The abundance of some of the bacteria including Prevotella, Parabacteroides, Lactobacillus, and Allobaculum was reversible upon diet change from HFD to CD. This suggests that microbiome modifications contribute to the metabolic effects of HFD feeding and that restoration of a normal microbiota may lead to improvement of the liver phenotype. In conclusion, we found that steatosis and gut microbiota dysbiosis induced by 8 weeks of high-fat diet can be reversed by 1 week of chow diet administration, and we identified gut bacteria associated with the metabolic phenotype.
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The Anti-Oxidation and Mechanism of Essential Oil of Paederia scandens in the NAFLD Model of Chicken. Animals (Basel) 2019; 9:ani9100850. [PMID: 31652524 PMCID: PMC6826951 DOI: 10.3390/ani9100850] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 10/18/2019] [Accepted: 10/18/2019] [Indexed: 01/19/2023] Open
Abstract
Simple Summary The essential oil of Paederia scandens can remedy non-alcoholic fatty liver disease of chicken, but the mechanisms remain unclear. In this study, proteomics technology was used to declare the anti-non-alcoholic fatty liver disease mechanism of Paederia scandens essential oil. The results show that the essential oil of Paederia scandens significant decreased the oxidative stress of non-alcoholic fatty liver disease in chicken, which was mainly due to the center regulation protein of HSP7C being significantly inhibited. Abstract The aim of the study is to determine the underlying pathogenic mechanisms of oxidative stress and detect the anti-oxidative target of essential oil of Paederia scandens in non-alcoholic fatty liver disease (NAFLD). Chicken NAFLD was modeled by feeding with a high-capacity diet and Paederia scandens essential oil was used to treat the disease. The levels of hepatic reactive oxygen species (ROS), malondialdehyde (MDA), superoxide dismutase (SOD), and the differential proteins and network of protein–protein interactions were investigated in model and drug-treated groups. The results showed that essential oil of Paederia scandens down regulated the hepatic ROS and MDA level significantly (p < 0.05 and 0.01, respectively). The heat shock cognate 71 kDa protein (HSP7C) was down regulated significantly, which was in the center of the network and interacted with 22 other proteins. The results showed that oxidative stress played an important role in the pathogenesis of chicken NAFLD. The essential oil of Paederia scandens showed good anti-oxidation activity by down regulating the HSP7C protein, which can be used as a potential therapeutic target in chicken NAFLD.
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Cui Y, Chang R, Zhang T, Zhou X, Wang Q, Gao H, Hou L, Loor JJ, Xu C. Chinese Herbal Formula (CHF03) Attenuates Non-Alcoholic Fatty Liver Disease (NAFLD) Through Inhibiting Lipogenesis and Anti-Oxidation Mechanisms. Front Pharmacol 2019; 10:1190. [PMID: 31680967 PMCID: PMC6803500 DOI: 10.3389/fphar.2019.01190] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 09/17/2019] [Indexed: 12/29/2022] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) is a hepatic ailment with a rapidly increasing incidence in the human population due largely to dietary hyper nutrition and subsequent obesity. Discovering effective natural compounds and herbs against NAFLD can provide alternative and complementary medical treatments to current chemical pharmaceuticals. In this study, ICR male mice were fed a high-fat diet (HFD) in vivo and the AML12 cells were treated with palmitic acid (PA) in vitro. We explore the protective effect and potential mechanism of Chinese Herbal Formula (CHF03) against NAFLD by HE staining, transmission Electron Microscopy assay, Western blotting, and gene expression. In vivo, oxidative stress markers (GSH, GSH-px, MDA, SOD, and CAT) confirmed that CHF03 alleviated oxidative stress and abundance of NF-κB proteins indicating a reduction in inflammation and oxidative stress. The lower protein abundance of ACACA and FASN indicated a preventive effect on lipogenesis. Histological and ultrastructural observations revealed that CHF03 inhibited NAFLD. Expression of Srebf1, Fasn, and Acaca, which are associated with lipogenesis, were downregulated. In vitro, genes and proteins are expressed in a dose-dependent manner, consistent with those in the liver. CHF03 inhibited lipid accumulation and expression of NF-κB, nuclear transfer, and transcriptional activity in AML12 cells. The CHF03 might have a beneficial role in the prevention of hepatic steatosis by altering the expression of lipogenic genes and attenuating oxidative stress.
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Affiliation(s)
- Yizhe Cui
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Renxu Chang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Tao Zhang
- Open Project Program of Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, Beijing University of Agriculture, Beijing, China
| | - Xiaocui Zhou
- Laboratory of Zoonosis, China Animal Health and Epidemiology Center, Qingdao, China
| | - Qiuju Wang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Haiyun Gao
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Lintong Hou
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Juan J Loor
- Department of Animal Sciences and Division of Nutritional Sciences, University of Illinois, Urbana, IL, United States
| | - Chuang Xu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China
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Dietary Glycotoxins Impair Hepatic Lipidemic Profile in Diet-Induced Obese Rats Causing Hepatic Oxidative Stress and Insulin Resistance. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:6362910. [PMID: 31341532 PMCID: PMC6614994 DOI: 10.1155/2019/6362910] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Accepted: 04/22/2019] [Indexed: 02/06/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD) is caused by excessive liver lipid accumulation, but insulin resistance is specifically associated with impaired lipid saturation, oxidation, and storage (esterification), besides increased de novo lipogenesis. We hypothesized that dietary glycotoxins could impair hepatic lipid metabolism in obesity contributing to lipotoxicity-driven insulin resistance and thus to the onset of nonalcoholic steatohepatitis (NASH). In diet-induced obese rats with methylglyoxal-induced glycation, magnetic resonance spectroscopy, mass spectrometry, and gas chromatography were used to assess liver composition in fatty acyl chains and phospholipids. High-fat diet-induced obesity increased liver lipid fraction and suppressed de novo lipogenesis but did not change fatty acid esterification and saturation or insulin sensitivity. Despite a similar increase in total lipid fraction when supplementing the high-fat diet with dietary glycotoxins, impairment in the suppression of de novo lipogenesis and decreased fatty acid unsaturation and esterification were observed. Moreover, glycotoxins also decreased polyunsaturated cardiolipins and caused oxidative stress, portal inflammation, and insulin resistance in high-fat diet-induced obese rats. Dietary glycated products do not change total lipid levels in the liver of obese rats but dramatically modify the lipidemic profile, leading to oxidative stress, hepatic lipotoxicity, and insulin resistance in obesity and thus contribute to the onset of NASH.
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75
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Yi H, Xu D, Wu X, Xu F, Lin L, Zhou H. Isosteviol Protects Free Fatty Acid- and High Fat Diet-Induced Hepatic Injury via Modulating PKC-β/p66Shc/ROS and Endoplasmic Reticulum Stress Pathways. Antioxid Redox Signal 2019; 30:1949-1968. [PMID: 30484323 PMCID: PMC6486675 DOI: 10.1089/ars.2018.7521] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Aims: Nonalcoholic fatty liver disease (NAFLD) is the most common cause of chronic liver diseases. However, there are no approved pharmacotherapies for the treatment of NAFLD other than managing life style and controlling diets. Extensive studies have demonstrated that multiple mechanisms are involved in free fatty acid (FFA)- and high fat diet (HFD)-induced hepatic injury, including mitochondrial dysfunction, activation of oxidative stress and endoplasmic reticulum (ER) stress, and lysosome dysfunction. A previous study reported that Isosteviol (ISV), a derivative of stevioside, prevents HFD-induced hepatic injury. However, the underlying mechanisms remain unclear. Results: In this study, we examined the potential cellular/molecular mechanisms underlying ISV-mediated protective effect against FFA-/HFD-induced hepatic lipotoxicity by using both in vitro primary rat hepatocytes and the in vivo rat NAFLD model. The results indicated that ISV inhibits FFA-/HFD-induced hepatic injury via reducing oxidative and ER stress. Specifically, ISV inhibited the expression, activation, and mitochondrial translocation of Src-homology-2-domain-containing transforming protein 1 (p66Shc), an adapter protein that mediates oxidative stress-induced injury and is a substrate of protein kinase C-β (PKC-β), via inhibition of PKC-β activity. However, ISV had no effect on the expression and activity of peptidyl-prolyl cis-trans isomerase and serine/threonine protein phosphatase 2A, isomerase and phosphorylase of p66Shc. In addition, ISV also inhibited FFA-induced ER stress and decreased ER-mitochondrial interaction. Innovation and Conclusion: We first identified that ISV prevents FFA-/HFD-induced hepatic injury through modulating PKC-β/p66Shc/oxidative and ER stress pathways. ISV represents a promising therapeutic agent for NAFLD in the future. Antioxid. Redox Signal. 30, 1949-1968.
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Affiliation(s)
- Hongwei Yi
- 1 Department of Pharmacology, School of Medicine, Southeast University, Nanjing, China
| | - Deyi Xu
- 1 Department of Pharmacology, School of Medicine, Southeast University, Nanjing, China
| | - Xudong Wu
- 2 State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Fang Xu
- 2 State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Lin Lin
- 1 Department of Pharmacology, School of Medicine, Southeast University, Nanjing, China
| | - Huiping Zhou
- 3 Department of Microbiology and Immunology, Virginia Commonwealth University and McGuire Veterans Affairs Medical Center, Richmond, Virginia
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76
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Das S, Choudhuri D. Calcium supplementation shows a hepatoprotective effect against high-fat diet by regulating oxidative-induced inflammatory response and lipogenesis activity in male rats. J Tradit Complement Med 2019; 10:511-519. [PMID: 32953568 PMCID: PMC7484968 DOI: 10.1016/j.jtcme.2019.06.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 05/28/2019] [Accepted: 06/01/2019] [Indexed: 12/30/2022] Open
Abstract
Background and aim High-fat diet (HFD) triggers obesity-related metabolic diseases like non-alcoholic fatty liver diseases (NAFLD). Calcium supplementation is known to have an anti-obesity effect. However, the effect of calcium supplementation has not been evaluated so far in context to hepatic functions on exposure to HFD. The goal of the present study was to investigate the role of calcium supplementation on hepatic function and other physiological markers in HFD induced NAFLD rats. Experimental procedure 18 male Wistar rats were divided into two groups; first group considered control group (n = 6) for the entire treatment period and the second group (n = 12) fed with HFD for 6 weeks to induce NAFLD model and then sub-divided into two groups (n = 6 rats); one group received HFD and other group received 1.0 gm CaCO3/100 gm HFD for 30 days. After treatment, all animals were euthanized to collect the blood and liver for biochemical, enzymatic, oxidative, anti-oxidant, western blot and histological study. Results and conclusion Calcium supplementation significantly improved the anthropometric parameters and decreases the level of serum cholesterol, triglyceride, FFA and hepatic enzymes. Calcium supplementation significantly down-regulated the hepatic PPAR-γ mediated FAS activity, hepatic lipid accumulation, oxidative stress and restored the activities of antioxidant enzyme which further prevented the stimulation of pro-inflammatory response. Calcium supplementation also increases the hepatic protein expression of phosphorylated AMP-activated protein kinase. So, calcium supplementation showed a hepatoprotective effect during NAFLD by downregulating the oxidative induced inflammatory response stimulated by hepatic lipogenesis activity and subsequent lipid accumulation. Calcium supplementation improves the anthropometric changes, lipid profile and hepatic enzymatic activities induced by HFD. Calcium supplementation up-regulated AMPK activity and down regulated PPAR-γ activity. Hepatic lipogenesis activity and lipid accumulation was down regulated by calcium supplementation through inhibition of FAS activity. Hepatic anti-oxidant and oxidative balance was restored on exposure to calcium supplementation. Down regulation of hepatic oxidative stress prevents the activation of hepatic inflammatory makers.
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Affiliation(s)
- Sandeep Das
- Department of Human Physiology, Tripura University (A Central University), Suryamaninagar, Agartala, Tripura, 799022, India
| | - Dipayan Choudhuri
- Department of Human Physiology, Tripura University (A Central University), Suryamaninagar, Agartala, Tripura, 799022, India
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Moderate chronic ethanol consumption exerts beneficial effects on nonalcoholic fatty liver in mice fed a high-fat diet: possible role of higher formation of triglycerides enriched in monounsaturated fatty acids. Eur J Nutr 2019; 59:1619-1632. [PMID: 31161349 DOI: 10.1007/s00394-019-02017-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 05/28/2019] [Indexed: 02/07/2023]
Abstract
PURPOSE Several clinical studies suggested that light-to-moderate alcohol intake could alleviate nonalcoholic fatty liver disease (NAFLD), but the underlying mechanism is still poorly understood. METHODS Mice fed a high-fat diet (HFD) were submitted or not to moderate ethanol intake for 3 months (ca. 10 g/kg/day) via drinking water. Biochemical, analytical and transcriptomic analyses were performed in serum and liver. RESULTS Serum ethanol concentrations in ethanol-treated HFD mice comprised between 0.5 and 0.7 g/l throughout the experiment. NAFLD improvement was observed in ethanol-treated HFD mice as assessed by reduced serum transaminase activity. This was associated with less microvesicular and more macrovacuolar steatosis, the absence of apoptotic hepatocytes and a trend towards less fibrosis. Liver lipid analysis showed increased amounts of fatty acids incorporated in triglycerides and phospholipids, reduced proportion of palmitic acid in total lipids and higher desaturation index, thus suggesting enhanced stearoyl-coenzyme A desaturase activity. mRNA expression of several glycolytic and lipogenic enzymes was upregulated. Genome-wide expression profiling and gene set enrichment analysis revealed an overall downregulation of the expression of genes involved in collagen fibril organization and leukocyte chemotaxis and an overall upregulation of the expression of genes involved in oxidative phosphorylation and mitochondrial respiratory chain complex assembly. In addition, mRNA expression of several proteasome subunits was upregulated in ethanol-treated HFD mice. CONCLUSIONS Moderate chronic ethanol consumption may alleviate NAFLD by several mechanisms including the generation of non-toxic lipid species, reduced expression of profibrotic and proinflammatory genes, restoration of mitochondrial function and possible stimulation of proteasome activity.
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78
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Meng Z, Wang D, Liu W, Li R, Yan S, Jia M, Zhang L, Zhou Z, Zhu W. Perinatal exposure to Bisphenol S (BPS) promotes obesity development by interfering with lipid and glucose metabolism in male mouse offspring. ENVIRONMENTAL RESEARCH 2019; 173:189-198. [PMID: 30921577 DOI: 10.1016/j.envres.2019.03.038] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 03/14/2019] [Accepted: 03/15/2019] [Indexed: 05/27/2023]
Abstract
Bisphenol S (BPS), a substitute of bisphenol A (BPA), is widely used for manufacturing different polymers. Due to its wide range of applications, BPS has been frequently detected in the foodstuffs, environment and human blood and excreta. In this study, we examined the effects of the perinatal exposure to BPS on obesity development using 1H NMR based on metabolomics strategy combined with gene expression analysis in male mouse offspring at a dosage of 100 ng/g bw/day. We found that perinatal exposure to BPS significantly increased the body weight, the weights of liver and epididymal white adipose tissue (epiWAT), serum alanine aminotransferase (ALT) activity, and the contents of triglyceride (TG) and cholesterol (T-Cho) in the liver. Histopathological analysis showed that lipids were accumulated significantly in liver tissues and epiWAT with BPS exposure. Furthermore, expressions of genes involved in the inflammatory pathways were significantly increased in liver tissues and epiWAT. Meanwhile, serum metabolomics study showed significant changes in the contents of metabolites associated with lipid and glucose metabolism. Correspondingly, the relative expression levels of genes involved in lipid and glucose metabolism were significantly changed in the liver tissue and epiWAT of male mouse offspring. In conclusion, these results showed that perinatal exposure to BPS may increase the risk of obesity by interfering with lipid and glucose metabolism in male mouse offspring. The potential health risks of BPS in the human required further detailed studies evaluating.
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Affiliation(s)
- Zhiyuan Meng
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Beijing, 100193, China
| | - Dezhen Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Beijing, 100193, China
| | - Wan Liu
- Department of Digestive, The Traditional Chinese Medicine Hospital of Xuzhou City Affiliated to Nanjing University of Chinese, Xuzhou, 221003, China
| | - Ruisheng Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Beijing, 100193, China
| | - Sen Yan
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Beijing, 100193, China
| | - Ming Jia
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Beijing, 100193, China
| | - Luyao Zhang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Beijing, 100193, China
| | - Zhiqiang Zhou
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Beijing, 100193, China
| | - Wentao Zhu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Beijing, 100193, China.
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Mansour A, Hekmatdoost A, Mirmiran P. What are the main areas of focus to prevent or treat non-alcoholic fatty liver disease? J Dig Dis 2019; 20:271-277. [PMID: 30968561 DOI: 10.1111/1751-2980.12751] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 02/26/2019] [Accepted: 04/07/2019] [Indexed: 12/11/2022]
Abstract
Recently, a growing body of information has accumulated to suggest that nutritional status and food compounds impact on the development or progression of non-alcoholic fatty liver disease (NAFLD). The best strategy to prevent and treat NAFLD is to modify diet and lifestyle by maintaining a healthy weight, following a well-balanced diet with appropriate energy intake and increasing physical activity or strength training. Here we review the literatures and discuss existing and potential therapeutic strategies for the prevention and management of NAFLD, emphasizing the description of nutritional status and its clinical impact on the outcomes of NAFLD.
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Affiliation(s)
- Asieh Mansour
- Student Research Committee, Faculty of Nutrition Sciences and Food Technology, National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Department of Clinical Nutrition and Dietetics, Faculty of Nutrition Sciences and Food Technology, National Nutrition and Food Technology, Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Azita Hekmatdoost
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition Sciences and Food Technology, National Nutrition and Food Technology, Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Parvin Mirmiran
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition Sciences and Food Technology, National Nutrition and Food Technology, Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Hong L, Zahradka P, Cordero-Monroy L, Wright B, Taylor CG. Dietary Docosahexaenoic Acid (DHA) and Eicosapentaenoic Acid (EPA) Operate by Different Mechanisms to Modulate Hepatic Steatosis and Hyperinsulemia in fa/fa Zucker Rats. Nutrients 2019; 11:nu11040917. [PMID: 31022865 PMCID: PMC6521162 DOI: 10.3390/nu11040917] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Revised: 04/10/2019] [Accepted: 04/19/2019] [Indexed: 01/28/2023] Open
Abstract
Hepatic steatosis, an early stage of non-alcoholic fatty liver disease, is commonly present in obesity and type 2 diabetes, and is associated with reduced hepatic omega-3 polyunsaturated fatty acid (n3-PUFA) status that impacts on the anti-inflammatory and insulin sensitizing functions of n3-PUFA. Our objective was to directly compare plant- and marine-based n3-PUFA (α-linoleic acid (ALA)), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA)) for their effects on hepatic steatosis, markers of hepatic inflammation and fibrosis, and insulinemia in obese rats. Fa/fa Zucker rats were provided diets containing ALA, EPA, DHA, or linoleic acid (LA, n6-PUFA) for eight weeks and compared to baseline fa/fa rats and lean Zucker rats fed LA-rich diet for eight weeks. Both DHA and EPA groups had liver lipid similar to baseline, however, DHA was more effective than EPA for reducing hepatic fatty acid synthase (FAS), increasing the proportion of smaller lipid droplets, reversing early fibrotic damage, and reducing fasting hyperinsulinemia. EPA was more effective for reducing FoxO1. Dietary ALA did not attenuate hepatic steatosis, most inflammatory markers or FAS. In summary, amongst the n3-PUFA, DHA was the most effective for elevating hepatic DHA levels, and preventing progression of hepatic steatosis via reductions in FAS and a marker of fibrosis.
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Affiliation(s)
- Lena Hong
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.
- Canadian Centre for Agri-Food Research in Health and Medicine, St. Boniface Hospital Research Centre, Winnipeg, MB R2H 2A6, Canada.
| | - Peter Zahradka
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.
- Canadian Centre for Agri-Food Research in Health and Medicine, St. Boniface Hospital Research Centre, Winnipeg, MB R2H 2A6, Canada.
- Department of Physiology and Pathophysiology, University of Manitoba, Winnipeg, MB R3E 0J9, Canada.
| | - Luis Cordero-Monroy
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.
- Canadian Centre for Agri-Food Research in Health and Medicine, St. Boniface Hospital Research Centre, Winnipeg, MB R2H 2A6, Canada.
| | - Brenda Wright
- Canadian Centre for Agri-Food Research in Health and Medicine, St. Boniface Hospital Research Centre, Winnipeg, MB R2H 2A6, Canada.
| | - Carla G Taylor
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.
- Canadian Centre for Agri-Food Research in Health and Medicine, St. Boniface Hospital Research Centre, Winnipeg, MB R2H 2A6, Canada.
- Department of Physiology and Pathophysiology, University of Manitoba, Winnipeg, MB R3E 0J9, Canada.
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81
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He Z, Yang JJ, Zhang R, Li HT, Wu L, Jiang F, Jia WP, Hu C. Circulating miR-29b positively correlates with non-alcoholic fatty liver disease in a Chinese population. J Dig Dis 2019; 20:189-195. [PMID: 30756471 DOI: 10.1111/1751-2980.12716] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 12/28/2018] [Accepted: 02/11/2019] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Early screening of non-alcoholic fatty liver disease (NAFLD) is of great significance for the early detection and intervention in NAFLD. MicroRNAs (miRNAs) are important regulators of metabolic diseases including NAFLD. The aim of this study was to investigate the association of serum miR-29a-c with NAFLD in a Chinese population. METHODS Participants were divided into four groups based on the presence or absence of NAFLD and/or type 2 diabetes mellitus (T2DM). Quantitative polymerase chain reaction analysis was performed to quantify serum level of miR-29a-c. The association of miR-29a-c with NAFLD was evaluated. RESULTS Serum miR-29b, but not miR-29a or miR-29c, was positively associated with NAFLD (odds ratio [OR] 2.04 [1.16- 3.58], P = 0.013). Additionally, age, serum triglyceride and fasting plasma glucose (FPG) levels were independently associated with miR-29b (β ± standard error [SE] = 0.004 ± 0.002, P = 0.019 for age; β ± SE = 0.110 ± 0.054, P = 0.042 for triglyceride; and β ± SE = 0.389 ± 0.161, P = 0.016 for FPG). MiR-29b level was positively correlated with intrahepatic lipid content (β ± SE = 6.055 ± 2.630, P = 0.024) after adjusted for age, sex, and body mass index. CONCLUSIONS Serum miR-29b was associated with intrahepatic lipid content and NAFLD in a Chinese population-based study.
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Affiliation(s)
- Zhen He
- Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Clinical Center for Diabetes, Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Jian Jun Yang
- Department of General Surgery, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Rong Zhang
- Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Clinical Center for Diabetes, Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Hua Ting Li
- Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Clinical Center for Diabetes, Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Liang Wu
- Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Clinical Center for Diabetes, Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Feng Jiang
- Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Clinical Center for Diabetes, Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Wei Ping Jia
- Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Clinical Center for Diabetes, Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Cheng Hu
- Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Clinical Center for Diabetes, Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.,Department of Endocrinology and Metabolism, Institute for Metabolic Diseases, Fengxian Central Hospital, Third School of Clinical Medicine, Southern Medical University, Shanghai, China
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82
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Asprouli E, Kalafati IP, Sakellari A, Karavoltsos S, Vlachogiannakos J, Revenas K, Kokkinos A, Dassenakis M, Dedoussis GV, Kalogeropoulos N. Evaluation of Plasma Trace Elements in Different Stages of Nonalcoholic Fatty Liver Disease. Biol Trace Elem Res 2019; 188:326-333. [PMID: 30014284 DOI: 10.1007/s12011-018-1432-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 07/03/2018] [Indexed: 01/18/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD) is considered as the hepatic manifestation of metabolic syndrome. Its global prevalence is estimated between 25 and 45%, occurring mainly in overweight individuals with unhealthy dietary habits and low levels of physical activity. Many studies have investigated the association of trace elements with liver diseases, though not with NAFLD. In this work, we investigated trace element levels in plasma of patients and not-patients and their possible association with various stages of the disease. Inductively coupled plasma mass spectrometry (ICP-MS) was employed for the determination of As, Ba, Cd, Co, Cs, Cu, Fe, Rb, Sr, Tl, and Zn in the plasma of 189 free-living residents of Athens, Greece, either healthy or patients with mild, moderate, or severe NAFLD. The disease was diagnosed by abdominal ultrasound; blood samples were analyzed for total, HDL and LDL cholesterol, triglycerides, fasting glucose, fasting insulin, and liver enzymes, namely aspartate aminotransferase (AST), alanine transaminase (ALT), and γ-glutamyltransferase (Gamma-GT); insulin resistance was determined by the homeostatic model assessment (HOMA-IR). Zinc exhibited a statistically significant negative association with the severity of the disease, while cesium showed a statistically significant positive association. Moreover, thallium and iron were inversely associated with insulin levels. Trace element determination in plasma could be useful for establishing relationships with NAFLD status of patients. Further research is required for the verification and interpretation of these findings.
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Affiliation(s)
- Eleni Asprouli
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University of Athens, Athens, Greece
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece
| | - Ioanna Panagiota Kalafati
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University of Athens, Athens, Greece
| | - Aikaterini Sakellari
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece
| | - Sotirios Karavoltsos
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece
| | - John Vlachogiannakos
- Academic Department of Gastroenterology, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Konstantinos Revenas
- Radiology Department, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Alexander Kokkinos
- First Department of Propaedeutic and Internal Medicine, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Manos Dassenakis
- Laboratory of Environmental Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece
| | - George V Dedoussis
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University of Athens, Athens, Greece
| | - Nick Kalogeropoulos
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University of Athens, Athens, Greece.
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83
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Chen LX, Qi YL, Qi Z, Gao K, Gong RZ, Shao ZJ, Liu SX, Li SS, Sun YS. A Comparative Study on the Effects of Different Parts of Panax ginseng on the Immune Activity of Cyclophosphamide-Induced Immunosuppressed Mice. Molecules 2019; 24:E1096. [PMID: 30897728 PMCID: PMC6470474 DOI: 10.3390/molecules24061096] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 03/10/2019] [Accepted: 03/16/2019] [Indexed: 01/07/2023] Open
Abstract
The objective of the present study was to compare the effects of the immunological activity of various parts (root/stem/leaf/flower/seed) of five-year-old ginseng on the immune system of immunosuppressive mice. Immunosuppression was induced by cyclophosphamide (CTX) in the mouse model, whereas levamisole hydrochloride tablet (LTH) was used for the positive control group. We found that ginseng root (GRT), ginseng leaf (GLF), and ginseng flower (GFR) could relieve immunosuppression by increased viability of NK cells, enhanced immune organ index, improved cell-mediated immune response, increased content of CD4⁺ and ratio of CD4⁺/CD8⁺, and recovery of macrophage function, including carbon clearance, phagocytic rate, and phagocytic index, in immunodeficient mice. However, ginseng stem (GSM) and ginseng seed (GSD) could only enhance the thymus indices, carbon clearance, splenocyte proliferation, NK cell activities, and the level of IL-4 in immunosuppressed mice. In CTX-injected mice, GRT and GFR remarkably increased the protein expression of Nrf2, HO-1, NQO1, SOD1, SOD2, and CAT in the spleen. As expected, oral administration of GRT and GFR markedly enhanced the production of cytokines, such as IL-1β, IL-4, IL-6, IFN-γ, and TNF-α, compared with the CTX-induced immunosuppressed mice, and GRT and GFR did this relatively better than GSM, GLF, and GSD. This study provides a theoretical basis for further study on different parts of ginseng.
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Affiliation(s)
- Li-Xue Chen
- Institute of Special Animals and Plants Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China.
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
| | - Yu-Li Qi
- Institute of Special Animals and Plants Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China.
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
| | - Zeng Qi
- School of Pharmaceutical Sciences, Jilin University, Changchun 130021, China.
| | - Kun Gao
- Institute of Special Animals and Plants Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China.
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
| | - Rui-Ze Gong
- Institute of Special Animals and Plants Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China.
| | - Zi-Jun Shao
- Institute of Special Animals and Plants Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China.
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
| | - Song-Xin Liu
- Institute of Special Animals and Plants Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China.
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
| | - Shan-Shan Li
- Institute of Special Animals and Plants Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China.
| | - Yin-Shi Sun
- Institute of Special Animals and Plants Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China.
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
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Amelioration of CCl 4-Induced Hepatotoxicity in Rabbits by Lepidium sativum Seeds. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 2019:5947234. [PMID: 30984276 PMCID: PMC6431501 DOI: 10.1155/2019/5947234] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 01/19/2019] [Accepted: 01/30/2019] [Indexed: 01/22/2023]
Abstract
The current study aimed to evaluate the probable protective effect of Lepidium sativum seeds (LSS) against CCl4 induced hepatic injury in New-Zealand rabbits. Rabbits were randomly divided into two main groups; group-A (noninjured group, n=15) was divided to subgroups A1 (untreated control) and A2 and A3 which received 200 & 400 mg/kg bw of LSS, respectively, in their diet daily. Group-B (injured group, n=30) were subcutaneously injected with CCl4 (0.5 ml/kg bw) starting from day one of the experiment and were equally divided into 3 subgroups: B1 received normal standard diet and B2 & B3 received 200 & 400 mg/kg bw of LSS, respectively, in their diet daily. Five rabbits of all subgroups were decapitated 5 and 10 weeks after experimental running. Biochemical analysis revealed significant decrease in serum levels of transaminases, γ-GT, ALP, total bilirubin, cholesterol, triglycerides associated with significant increase in the serum levels of T protein and albumin of 200 and 400 mg/kg bw of LSS protected rabbits for 5 and 10 weeks as compared with CCl4 treated rabbits. Oxidative stress and depressed antioxidant system of the liver tissues were markedly obvious in the CCl4 treated group. LSS administration reversed these results towards normalization. Histopathological examination of LSS protected rabbits (200 mg/kg bw of LSS for 10 weeks) showed improvement of the histoarchitectural changes of the liver induced by CCl4 to the normal aspect, showing regenerating hepatocytes with no steatosis, discrete chronic venous congestion, and discrete inflammatory infiltrate. The current findings provide new evidence that LSS could reverse the hepatotoxic effects of CCl4 and repair the liver functions.
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85
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Dietary determinants of hepatic fat content and insulin resistance in overweight/obese children: a cross-sectional analysis of the Prevention of Diabetes in Kids (PREDIKID) study. Br J Nutr 2019; 121:1158-1165. [PMID: 30832745 DOI: 10.1017/s0007114519000436] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Paediatric non-alcoholic fatty liver disease has increased in parallel with childhood obesity. Dietary habits, particularly products rich in sugars, may influence both hepatic fat and insulin resistance (homeostatic model assessment for insulin resistance (HOMA-IR)). The aim of the study was to examine the association of the consumption of foods and food components, dairy desserts and substitutes (DDS), sugar-sweetened beverages (SSB), as well as total and added sugars, with hepatic fat and HOMA-IR. Dietary intake (two non-consecutive 24 h-recalls), hepatic fat (MRI) and HOMA-IR were assessed in 110 overweight/obese children (10·6 (sd 1·1) years old). Linear regression analyses were used to examine the association of dietary intake with hepatic fat and HOMA-IR adjusted for potential confounders (sex, age, energy intake, maternal educational level, total and abdominal adiposity and sugar intake). The results showed that there was a negative association between cereal intake and hepatic fat (β=-0·197, P<0·05). In contrast, both SSB consumption (β=0·217; P=0·028) and sugar in SSB (β=0·210, P=0·035), but not DDS or sugar in DDS or other dietary components, were positively associated with hepatic fat regardless of potential confounders including total sugar intake. In conclusion, cereal intake might decrease hepatic fat, whereas SSB consumption and its sugar content may increase the likelihood of having hepatic steatosis. Although these observations need to be confirmed using experimental evidence, these results suggest that healthy lifestyle intervention programs are needed to improve dietary habits as well as to increase the awareness of the detrimental effects of SSB consumption early in life.
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86
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Wu J, Shao H, Zhang J, Ying Y, Cheng Y, Zhao D, Dou X, Lv H, Li S, Liu F, Ling P. Mussel polysaccharide α-D-glucan (MP-A) protects against non-alcoholic fatty liver disease via maintaining the homeostasis of gut microbiota and regulating related gut-liver axis signaling pathways. Int J Biol Macromol 2019; 130:68-78. [PMID: 30797009 DOI: 10.1016/j.ijbiomac.2019.02.097] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 02/09/2019] [Accepted: 02/15/2019] [Indexed: 12/14/2022]
Abstract
We isolated and characterized a Mussel polysaccharide, α-D-glucan (MP-A), from Mytilus coruscus earlier. In this work, the pharmacological activity and mechanisms of MP-A as an oral supplement for non-alcoholic fatty liver disease (NAFLD) were explored. High fat diet (HFD) was utilized to induce NAFLD in Sprague Dawley male rats and MP-A (0.6 g/kg) was supplemented for 4 weeks. The results showed that MP-A supplementation reduced blood lipid levels, intrahepatic lipid accumulation and NAFLD activity score in HFD-fed rats. Additionally, the analysis of 16S rDNA sequencing on gut microbiota samples revealed that HFD could induce microbial dysbiosis. However, MP-A supplementation could remodel gut microbiota structure, inhibit LPS-TLR4-NF-κB pathway activation, and restrain subsequent inflammation factors secretion. Furthermore, MP-A regulated the lipid metabolism by promoting the production of short chain fatty acids and suppressing PPAR γ and SREBP-1c expression. Our results support that MP-A can prevent against NAFLD and act as an oral supplementation for hepatoprotection via modulating gut microbiota and related gut-liver axis signaling pathways.
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Affiliation(s)
- Jixu Wu
- School of Pharmaceutical Sciences, Shandong University, Jinan 250101, China; Shandong Academy of Pharmaceutical Sciences, Key Laboratory of Biopharmaceuticals, Engineering Laboratory of Polysaccharide Drugs, National-Local Joint Engineering Laboratory of Polysaccharide Drugs, Jinan 250101, China
| | - Huarong Shao
- Shandong Academy of Pharmaceutical Sciences, Key Laboratory of Biopharmaceuticals, Engineering Laboratory of Polysaccharide Drugs, National-Local Joint Engineering Laboratory of Polysaccharide Drugs, Jinan 250101, China.
| | - Jinhua Zhang
- Shandong Academy of Pharmaceutical Sciences, Key Laboratory of Biopharmaceuticals, Engineering Laboratory of Polysaccharide Drugs, National-Local Joint Engineering Laboratory of Polysaccharide Drugs, Jinan 250101, China
| | - Yong Ying
- Shandong Academy of Pharmaceutical Sciences, Key Laboratory of Biopharmaceuticals, Engineering Laboratory of Polysaccharide Drugs, National-Local Joint Engineering Laboratory of Polysaccharide Drugs, Jinan 250101, China
| | - Yanling Cheng
- Shandong Academy of Pharmaceutical Sciences, Key Laboratory of Biopharmaceuticals, Engineering Laboratory of Polysaccharide Drugs, National-Local Joint Engineering Laboratory of Polysaccharide Drugs, Jinan 250101, China
| | - Dan Zhao
- Shandong Academy of Pharmaceutical Sciences, Key Laboratory of Biopharmaceuticals, Engineering Laboratory of Polysaccharide Drugs, National-Local Joint Engineering Laboratory of Polysaccharide Drugs, Jinan 250101, China
| | - Xixi Dou
- Shandong Freda Pharmaceutical Group Company, Jinan 250101, China
| | - Huimin Lv
- Shandong Academy of Pharmaceutical Sciences, Key Laboratory of Biopharmaceuticals, Engineering Laboratory of Polysaccharide Drugs, National-Local Joint Engineering Laboratory of Polysaccharide Drugs, Jinan 250101, China
| | - Shuaiguang Li
- School of Pharmaceutical Sciences, Shandong University, Jinan 250101, China; Shandong Academy of Pharmaceutical Sciences, Key Laboratory of Biopharmaceuticals, Engineering Laboratory of Polysaccharide Drugs, National-Local Joint Engineering Laboratory of Polysaccharide Drugs, Jinan 250101, China
| | - Fei Liu
- School of Pharmaceutical Sciences, Shandong University, Jinan 250101, China; Shandong Academy of Pharmaceutical Sciences, Key Laboratory of Biopharmaceuticals, Engineering Laboratory of Polysaccharide Drugs, National-Local Joint Engineering Laboratory of Polysaccharide Drugs, Jinan 250101, China.
| | - Peixue Ling
- School of Pharmaceutical Sciences, Shandong University, Jinan 250101, China; Shandong Academy of Pharmaceutical Sciences, Key Laboratory of Biopharmaceuticals, Engineering Laboratory of Polysaccharide Drugs, National-Local Joint Engineering Laboratory of Polysaccharide Drugs, Jinan 250101, China; Shandong Freda Pharmaceutical Group Company, Jinan 250101, China.
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87
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Rapid Recapitulation of Nonalcoholic Steatohepatitis upon Loss of Host Cell Factor 1 Function in Mouse Hepatocytes. Mol Cell Biol 2019; 39:MCB.00405-18. [PMID: 30559308 PMCID: PMC6379584 DOI: 10.1128/mcb.00405-18] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Host cell factor 1 (HCF-1), encoded by the ubiquitously expressed X-linked gene Hcfc1, is an epigenetic coregulator important for mouse development and cell proliferation, including during liver regeneration. We used a hepatocyte-specific inducible Hcfc1 knockout allele (called Hcfc1hepKO) to induce HCF-1 loss in hepatocytes of hemizygous Hcfc1hepKO/Y males by 4 days. Host cell factor 1 (HCF-1), encoded by the ubiquitously expressed X-linked gene Hcfc1, is an epigenetic coregulator important for mouse development and cell proliferation, including during liver regeneration. We used a hepatocyte-specific inducible Hcfc1 knockout allele (called Hcfc1hepKO) to induce HCF-1 loss in hepatocytes of hemizygous Hcfc1hepKO/Y males by 4 days. In heterozygous Hcfc1hepKO/+ females, owing to random X-chromosome inactivation, upon Hcfc1hepKO allele induction, a 50/50 mix of HCF-1-positive and -negative hepatocyte clusters is engineered. The livers with Hcfc1hepKO/Y hepatocytes displayed a 21- to 24-day terminal nonalcoholic fatty liver (NAFL), followed by nonalcoholic steatohepatitis (NASH) disease progression typical of severe NAFL disease (NAFLD). In contrast, in livers with heterozygous Hcfc1hepKO/+ hepatocytes, HCF-1-positive hepatocytes replaced HCF-1-negative hepatocytes and revealed only mild NAFL development. Loss of HCF-1 led to loss of PGC1α protein, probably owing to its destabilization, and deregulation of gene expression, particularly of genes involved in mitochondrial structure and function, likely explaining the severe Hcfc1hepKO/Y liver pathology. Thus, HCF-1 is essential for hepatocyte function, likely playing both transcriptional and nontranscriptional roles. These genetically engineered loss-of-HCF-1 mice can be used to study NASH as well as NAFLD resolution.
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88
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Tsochatzis EA, Newsome PN. Non-alcoholic fatty liver disease and the interface between primary and secondary care. Lancet Gastroenterol Hepatol 2019; 3:509-517. [PMID: 29893235 DOI: 10.1016/s2468-1253(18)30077-3] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 02/22/2018] [Accepted: 02/23/2018] [Indexed: 02/06/2023]
Abstract
Non-alcoholic fatty liver disease (NAFLD) has a prevalence of 25-30% in unselected populations and has become the main reason for referrals to hepatology services. From the perspective of liver disease, NAFLD has a high prevalence but low severity. Screening studies in people at risk for NAFLD have shown a prevalence of advanced fibrosis of 5%, which underlines the need for robust pathways for risk stratification in primary care, with subsequent referrals as required. In this Review, we discuss the interface between primary and secondary care with regards to risk stratification and management of patients with NAFLD. We focus on selected issues of epidemiology and natural history and discuss the burden of disease in primary care, the evidence on screening for NAFLD, the rationale for testing for advanced fibrosis, and the optimal management of the disease in primary care.
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Affiliation(s)
- Emmanuel A Tsochatzis
- Sheila Sherlock Liver Unit and UCL Institute for Liver and Digestive Health, Royal Free Hospital and University College London, London, UK.
| | - Philip N Newsome
- National Institute for Health Research, Liver Biomedical Research Unit and Liver Unit, University Hospitals Birmingham NHS Foundation Trust and Centre for Liver Research, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK
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89
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van Eekelen E, Geelen A, Alssema M, Lamb HJ, de Roos A, Rosendaal FR, de Mutsert R. Sweet Snacks Are Positively and Fruits and Vegetables Are Negatively Associated with Visceral or Liver Fat Content in Middle-Aged Men and Women. J Nutr 2019; 149:304-313. [PMID: 30657914 PMCID: PMC6374148 DOI: 10.1093/jn/nxy260] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 07/30/2018] [Accepted: 09/11/2018] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Visceral adipose tissue (VAT) and hepatic triglyceride content (HTGC) are major risk factors for cardiometabolic diseases. OBJECTIVE We aimed to investigate the association of dietary intake of the main food groups with VAT and HTGC in middle-aged men and women. METHODS We used data from the Netherlands Epidemiology of Obesity study, a population-based study including 6671 participants aged 45-65 y at baseline. In this cross-sectional analysis, VAT and HTGC were assessed by magnetic resonance imaging and spectroscopy, respectively, as the primary outcomes. Habitual intake of main food groups (dairy, meat, fish, fruits and vegetables, sweet snacks, and fats and oils) was estimated through the use of a food-frequency questionnaire. We examined associations of intake of different food groups with VAT and HTGC by linear regression analysis stratified by sex and adjusted for age, smoking, education, ethnicity, physical activity, basal metabolic rate, energy-restricted diet, menopausal state, and total energy intake. RESULTS In women, a 100-g/d higher intake of dairy was associated with 2.0 cm2 less VAT (95% CI: -3.4, -0.7 cm2) and a 0.95-fold lower HTGC (95% CI: 0.90-, 0.99-fold). Moreover, a 100-g/d higher intake of fruit and vegetables was associated with 1.6 cm2 less VAT (95% CI: -2.9, -0.2 cm2) in women. Fruit and vegetables were negatively associated (0.95; 95% CI: 0.91, 1.00) with HTGC, and sweet snacks were positively associated (1.29; 95% CI: 1.03, 1.63). Patterns were weaker but similar in men. Fish intake was not associated with VAT or HTGC and plant-based fat and oil intake were only associated with VAT after adjustment for total body fat. CONCLUSIONS Despite some variation in the strength of the associations between men and women, dietary intake of sweet snacks was positively associated with HTGC, and fruit and vegetable intake were negatively associated with visceral and liver fat content. Prospective studies are needed to confirm these results. The Netherlands Epidemiology of Obesity study is registered at clinicaltrials.gov with identifier NCT03410316.
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Affiliation(s)
- Esther van Eekelen
- Departments of Clinical Epidemiology and,Address correspondence to EvE (e-mail: )
| | - Anouk Geelen
- Division of Human Nutrition, Wageningen University & Research, Wageningen, Netherlands
| | - Marjan Alssema
- Unilever Research and Development, Vlaardingen, Netherlands,Department of Epidemiology and Biostatistics, Amsterdam Public Health Research Institute, VU University Medical Center, Amsterdam, Netherlands
| | - Hildo J Lamb
- Radiology, Leiden University Medical Center, Leiden, Netherlands
| | - Albert de Roos
- Radiology, Leiden University Medical Center, Leiden, Netherlands
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Minxuan X, Sun Y, Dai X, Zhan J, Long T, Xiong M, Li H, Kuang Q, Tang T, Qin Y, Chenxu G, Jun T. Fisetin attenuates high fat diet-triggered hepatic lipid accumulation: A mechanism involving liver inflammation overload associated TACE/TNF-α pathway. J Funct Foods 2019. [DOI: 10.1016/j.jff.2018.12.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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91
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Deng Y, Tang K, Chen R, Nie H, Liang S, Zhang J, Zhang Y, Yang Q. Berberine attenuates hepatic oxidative stress in rats with non-alcoholic fatty liver disease via the Nrf2/ARE signalling pathway. Exp Ther Med 2019; 17:2091-2098. [PMID: 30867696 PMCID: PMC6396022 DOI: 10.3892/etm.2019.7208] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Accepted: 12/21/2018] [Indexed: 12/12/2022] Open
Abstract
The present study investigated the effects of berberine (BBR) on hepatic oxidative stress and the nuclear factor erythroid 2-related factor 2/antioxidant response element (Nrf2/ARE) signalling pathway in rats in which non-alcoholic fatty liver disease (NAFLD) was induced by a high-fat diet. Rats were randomly divided into three groups: The normal control (NC), high-fat diet (HFD) and BBR groups. The NC group received a normal diet, while the other two groups were fed a high-fat diet. The rats in the BBR group were also fed BBR (100 mg/kg body weight) daily. A total of 8 weeks later, serum and liver lipid levels were measured. Hepatic histopathological changes were observed with haematoxylin and eosin and Oil Red O staining. Transmission electron microscopy was performed to observe the ultrastructural changes of the liver. The levels of superoxide dismutase (SOD), glutathione (GSH) and malondialdehyde (MDA) in the liver were measured. Quantitative polymerase chain reaction and western blotting were performed to investigate the expression of genes in the Nrf2/ARE signalling pathway in the liver. Histopathological results demonstrated that rats fed a high-fat diet for 8 weeks developed NAFLD, characterized by hepatic steatosis. BBR significantly decreased the body weight and liver weight. BBR markedly reduced hepatic steatosis, and the serum and liver lipid levels. Hepatic SOD and GSH levels were increased, while MDA levels were decreased by BBR co-administered with a high-fat diet. Additionally, the Nrf2/ARE signalling pathway was revealed to be involved in the protective effect of BBR on rats fed a high-fat diet. In conclusion, BBR may alleviate hepatic oxidative stress in rats with NAFLD, which may be partly attributed to the activation of the Nrf2/ARE signalling pathway.
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Affiliation(s)
- Yuanjun Deng
- School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Kairui Tang
- School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Runsen Chen
- School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Huan Nie
- School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Shu Liang
- School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Jinwen Zhang
- School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Yupei Zhang
- School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Qinhe Yang
- School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
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92
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The Crosstalk between Fat Homeostasis and Liver Regional Immunity in NAFLD. J Immunol Res 2019; 2019:3954890. [PMID: 30719457 PMCID: PMC6335683 DOI: 10.1155/2019/3954890] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Revised: 11/11/2018] [Accepted: 12/09/2018] [Indexed: 12/14/2022] Open
Abstract
The liver is well known as the center of glucose and lipid metabolism in the human body. It also functions as an immune organ. Previous studies have suggested that liver nonparenchymal cells are crucial in the progression of NAFLD. In recent years, NAFLD's threat to human health has been becoming a global issue. And by far, there is no effective treatment for NAFLD. Liver nonparenchymal cells are stimulated by lipid antigens, adipokines, or other factors, and secreted immune factors can alter the expression of key proteins such as SREBP-1c, ChREBP, and PPARγ to regulate lipid metabolism, thus affecting the pathological process of NAFLD. Interestingly, some ncRNAs (including miRNAs and lncRNAs) participate in the pathological process of NAFLD by changing body fat homeostasis. And even some ncRNAs could regulate the activity of HSCs, thereby affecting the progression of inflammation and fibrosis in the course of NAFLD. In conclusion, immunotherapy could be an effective way to treat NAFLD.
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93
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Bijnen M, van Greevenbroek MMJ, van der Kallen CJH, Scheijen JL, van de Waarenburg MPH, Stehouwer CDA, Wouters K, Schalkwijk CG. Hepatic Fat Content and Liver Enzymes Are Associated with Circulating Free and Protein-Bound Advanced Glycation End Products, Which Are Associated with Low-Grade Inflammation: The CODAM Study. J Diabetes Res 2019; 2019:6289831. [PMID: 31218233 PMCID: PMC6536997 DOI: 10.1155/2019/6289831] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 02/28/2019] [Accepted: 03/05/2019] [Indexed: 01/11/2023] Open
Abstract
Advanced glycation end products (AGEs) accumulate in fatty livers and may contribute to low-grade inflammation (LGI), potentially via their receptor, RAGE. It is unknown if the AGE accumulation in fatty livers results in elevated circulating AGEs. In a cohort study, we investigated the association of liver fat and hepatocellular damage with circulating AGEs and soluble RAGE (sRAGE) and subsequently the association of circulating AGEs and sRAGE with LGI. Cross-sectional associations of liver fat percentage (eLF%; ln-transformed) and liver enzymes (LE score; standardized) with circulating AGEs (free CML, CEL, and MG-H1 in nM and protein-bound CML, CEL, and pentosidine in nmol/mmol lysine; ln-transformed) and sRAGE (pg/ml, ln-transformed) and additionally of AGEs and sRAGE with LGI (standardized) were determined by multiple linear regression. eLF% was positively associated with circulating free CEL (β = 0.090; 95% CI 0.041; 0.139) but inversely with protein-bound CML (β = -0.071; 95% CI -0.108; -0.034). Similarly, the LE score was positively associated with free CML (β = 0.044; 95% CI 0.012; 0.076) and CEL (β = 0.040; 95% CI 0.009; 0.072) but inversely with protein-bound CML (β = -0.037; 95% CI -0.060; -0.013). Free CML (β = 0.297; 95% CI 0.049; 0.545) was positively associated with LGI, while protein-bound CML (β = -0.547; 95% CI -0.888; -0.207) was inversely associated, although this association was absent after adjustment for BMI. eLF% and LE score were not associated with sRAGE and sRAGE not with LGI after adjustment for BMI. Liver fat and enzymes were positively associated with circulating free AGEs, which were associated with LGI. In contrast, inverse relations were observed of liver fat and enzymes with circulating protein-bound AGEs and of protein-bound AGEs with LGI. These data suggest that hepatic steatosis and inflammation affect the formation and degradation of hepatic protein-bound AGEs resulting in elevated circulating free AGE levels. These alterations in AGE levels might influence LGI, but this is likely independent of RAGE.
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Affiliation(s)
- Mitchell Bijnen
- Department of Internal Medicine, MUMC, Maastricht, Netherlands
- CARIM, MUMC, Maastricht, Netherlands
| | | | | | - Jean L. Scheijen
- Department of Internal Medicine, MUMC, Maastricht, Netherlands
- CARIM, MUMC, Maastricht, Netherlands
| | | | - Coen D. A. Stehouwer
- Department of Internal Medicine, MUMC, Maastricht, Netherlands
- CARIM, MUMC, Maastricht, Netherlands
| | - Kristiaan Wouters
- Department of Internal Medicine, MUMC, Maastricht, Netherlands
- CARIM, MUMC, Maastricht, Netherlands
| | - Casper G. Schalkwijk
- Department of Internal Medicine, MUMC, Maastricht, Netherlands
- CARIM, MUMC, Maastricht, Netherlands
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Yang F, Jia X, Lei P, He Y, Xiang Y, Jiao J, Zhou S, Qian W, Duan Q. Quantification of hepatic steatosis in histologic images by deep learning method. JOURNAL OF X-RAY SCIENCE AND TECHNOLOGY 2019; 27:1033-1045. [PMID: 31744039 DOI: 10.3233/xst-190570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
OBJECTIVE To develop and test a novel method for automatic quantification of hepatic steatosis in histologic images based on the deep learning scheme designed to predict the fat ratio directly, which aims to improve accuracy in diagnosis of non-alcoholic fatty liver disease (NAFLD) with objective assessment of the severity of hepatic steatosis instead of subjective visual estimation. MATERIALS AND METHODS Thirty-six 8-week old New Zealand white rabbits of both sexes were fed with high-cholesterol, high-fat diet and sacrificed under deep anesthesia at various time points to obtain the pathological specimen. All rabbits were performed by multislice computed tomography for surveillance to measure density changes of liver parenchyma. A deep learning scheme using a convolutional neural network was developed to directly predict the liver fat ratio based on the pathological images. The average error value, standard deviation, and accuracy (error <5%) were evaluated and compared between the deep learning scheme and manual segmentation results. The Pearson's correlation coefficient was also calculated in this study. RESULTS The deep learning scheme performs successfully on rabbit liver histologic data, showing a high degree of accuracy and stability. The average error value, standard deviation, and accuracy (error <5%) were 3.21%, 4.02%, and 79.10% for the cropped images, 2.22%, 1.92%, and 88.34% for the original images, respectively. The strong positive correlation was also observed for cropped images (R = 0.9227) and original images (R = 0.9255) in comparison to labeled fat ratio. CONCLUSIONS This new deep learning scheme may aid in the quantification of steatosis in the liver and facilitate its treatment by providing an earlier clinical diagnosis.
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Affiliation(s)
- Fan Yang
- School of Biology & Engineering, Guizhou Medical University, Guiyang, Guizhou Province, China
- Key Laboratory of Biology and Medical Engineering, Guizhou Medical University, Guiyang, Guizhou Province, China
| | - Xianyuan Jia
- School of Biology & Engineering, Guizhou Medical University, Guiyang, Guizhou Province, China
- Key Laboratory of Biology and Medical Engineering, Guizhou Medical University, Guiyang, Guizhou Province, China
| | - Pinggui Lei
- Department of Radiology, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou Province, China
| | - Yan He
- School of Biology & Engineering, Guizhou Medical University, Guiyang, Guizhou Province, China
- Key Laboratory of Biology and Medical Engineering, Guizhou Medical University, Guiyang, Guizhou Province, China
| | - Yining Xiang
- Department of Pathology, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou Province, China
| | - Jun Jiao
- Department of Radiology, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou Province, China
| | - Shi Zhou
- Department of Radiology, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou Province, China
| | - Wei Qian
- Department of Electrical and Computer Engineering, College of Engineering, University of Texas, El Paso, TX, USA
| | - Qinghong Duan
- Department of Radiology, The Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou Province, China
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95
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Ahmad A, Ali T, Kim MW, Khan A, Jo MH, Rehman SU, Khan MS, Abid NB, Khan M, Ullah R, Jo MG, Kim MO. Adiponectin homolog novel osmotin protects obesity/diabetes-induced NAFLD by upregulating AdipoRs/PPARα signaling in ob/ob and db/db transgenic mouse models. Metabolism 2019; 90:31-43. [PMID: 30473057 DOI: 10.1016/j.metabol.2018.10.004] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 10/05/2018] [Accepted: 10/15/2018] [Indexed: 12/23/2022]
Abstract
BACKGROUND In metabolic disorders, adiponectin and adiponectin receptors (AdipoR1/R2) signaling has a key role in improving nonalcoholic fatty liver disease (NAFLD) in obesity-associated diabetes. OBJECTIVE To the best of our knowledge, here, we reported for the first time the underlying mechanistic therapeutic efficacy of the novel osmotin, a homolog of mammalian adiponectin, against NAFLD in leptin-deficient ob/ob and db/db mice. METHODS The ob/ob and db/db mice were treated with osmotin at a dose of 5 μg/g three times a week for two weeks. To co-relate the in vivo results we used the human liver carcinoma HepG2 cells, subjected to knockdown with small siRNAs of AdipoR1/R2 and PPARα genes and treated with osmotin and palmitic acid (P.A.). MTT assay, Western blotting, immunohistofluorescence assays, and plasma biochemical analyses were applied. RESULTS Osmotin stimulated AdipoR1/R2 and its downstream APPL1/PPAR-α/AMPK/SIRT1 pathways in ob/ob and db/db mice, and HepG2 cells exposed to P.A. Mechanistically, we confirmed that knockdown of AdipoR1/R2 and PPARα by their respective siRNAs abolished the osmotin activity in HepG2 cells exposed to P.A. Overall, the in vivo and in vitro results suggested that osmotin protected against NAFLD through activation of AdipoR1/R2 and its downstream APPL1/PPAR-α/AMPK/SIRT1 pathways as shown by the reduced body weight, blood glucose level and glycated hemoglobin, improved glucose tolerance, attenuated insulin resistance and hepatic glucogenesis, regulated serum lipid parameters, and increased fatty acid oxidation and mitochondrial functions. CONCLUSION Our findings strongly suggest that novel osmotin might be a potential novel therapeutic tool against obesity/diabetes-induced NAFLD and other metabolic disorders.
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MESH Headings
- Adiponectin/analogs & derivatives
- Adiponectin/chemistry
- Animals
- Anti-Obesity Agents/pharmacology
- Cytoprotection/drug effects
- Diabetes Mellitus, Experimental/complications
- Diabetes Mellitus, Experimental/genetics
- Diabetes Mellitus, Experimental/pathology
- Disease Models, Animal
- Hep G2 Cells
- Humans
- Hypoglycemic Agents/pharmacology
- Leptin/deficiency
- Leptin/genetics
- Lipid Metabolism/drug effects
- Liver/drug effects
- Liver/pathology
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Obese
- Mice, Transgenic
- Non-alcoholic Fatty Liver Disease/etiology
- Non-alcoholic Fatty Liver Disease/pathology
- Non-alcoholic Fatty Liver Disease/prevention & control
- Obesity/complications
- Obesity/genetics
- Obesity/pathology
- PPAR alpha/metabolism
- Plant Proteins/pharmacology
- Receptors, Adiponectin/metabolism
- Receptors, Leptin/deficiency
- Receptors, Leptin/genetics
- Signal Transduction/drug effects
- Up-Regulation/drug effects
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Affiliation(s)
- Ashfaq Ahmad
- Division of Applied Life Science (BK 21), College of Natural Sciences, Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Tahir Ali
- Division of Applied Life Science (BK 21), College of Natural Sciences, Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Min Woo Kim
- Division of Applied Life Science (BK 21), College of Natural Sciences, Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Amjad Khan
- Division of Applied Life Science (BK 21), College of Natural Sciences, Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Myeung Hoon Jo
- Division of Applied Life Science (BK 21), College of Natural Sciences, Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Shafiq Ur Rehman
- Division of Applied Life Science (BK 21), College of Natural Sciences, Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Muhammad Sohail Khan
- Division of Applied Life Science (BK 21), College of Natural Sciences, Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Noman Bin Abid
- Division of Applied Life Science (BK 21), College of Natural Sciences, Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Mehtab Khan
- Division of Applied Life Science (BK 21), College of Natural Sciences, Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Rahat Ullah
- Division of Applied Life Science (BK 21), College of Natural Sciences, Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Min Gi Jo
- Division of Applied Life Science (BK 21), College of Natural Sciences, Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Myeong Ok Kim
- Division of Applied Life Science (BK 21), College of Natural Sciences, Gyeongsang National University, Jinju 660-701, Republic of Korea.
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96
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Haidari F, Hojhabrimanesh A, Helli B, Seyedian SS, Ahmadi-Angali K. Effect of a high-protein diet with β-cryptoxanthin supplementation on metabolic risk factors, oxidative and inflammatory biomarkers in non-alcoholic fatty liver disease (NAFLD): study protocol for a randomized controlled clinical trial. Trials 2018; 19:634. [PMID: 30445988 PMCID: PMC6240237 DOI: 10.1186/s13063-018-3014-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 10/21/2018] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Excessive hepatic fat is associated with increased metabolic risk factors, production of inflammatory factors, and oxidative stress. High protein intake might trigger an increased hepatic lipid oxidation through an increase in hepatic energy expenditure. Furthermore, the majority of randomized controlled trials (RCT) in humans have failed to show whether carotenoids can be used to prevent and treat non-alcoholic fatty liver disease (NAFLD). However, it is notable and contradictory that NAFLD is rapidly escalating in Iran and other countries with lower intakes of fruit and vegetables (as sources of β-cryptoxanthin [β-CX] and carbohydrates) and higher intake of carbohydrates (as an agent of NAFLD); and the effects of β-CX and a high protein diet (HPD) on NAFLD need to be investigated further. METHODS/DESIGN This study will be conducted as a randomized, double-blind, placebo-controlled clinical trial for 12 weeks to receive daily β-CX 6 mg supplementation combined with a HPD on levels of metabolic factors, β-CX, glycemic and lipid profiles, inflammatory factors, adipocytokines, and body composition. Ninety-two eligible patients, aged 18-60 years, of both genders, who are obese and overweight (body mass index [BMI] 25-40 kg/m2) will be randomly assigned to four groups as follow: HPD + placebo; normal protein diet + β-CX (NPD + β-CX); HPD + β-CX; and NPD + placebo (control group). Two populations will be analyzed in this work. The intention-to-treat (ITT) population includes all patients who will be randomized, while the per-protocol (PP) population includes all individuals who complete the 12- week intervention (i.e. study completers). DISCUSSION Our findings from this trial will contribute to the knowledge of the relationship between β-CX supplementation and a HPD on NAFLD patients and determination of optimal macronutrient ratios without energy restriction. TRIAL REGISTRATION Iran clinical trials registry, IRCT2017060210181N10 . Registered on 20 June 2017.
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Affiliation(s)
- Fatemeh Haidari
- Department of Nutrition, Nutrition and Metabolic Diseases Research Center, Ahvaz Jundishapur University of Medical sciences, Ahvaz, Iran
| | - Abdollah Hojhabrimanesh
- Department of Nutrition, Nutrition and Metabolic Diseases Research Center, Ahvaz Jundishapur University of Medical sciences, Ahvaz, Iran
| | - Bizhan Helli
- Department of Nutrition, Nutrition and Metabolic Diseases Research Center, Ahvaz Jundishapur University of Medical sciences, Ahvaz, Iran
| | - Seyed Saeid Seyedian
- Gastroenterology Department, Ahvaz Jundishapur University of Medical sciences, Ahvaz, Iran
| | - Kambiz Ahmadi-Angali
- Faculty of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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97
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Liu T, Wang P, Cong M, Zhao X, Zhang D, Xu H, Liu L, Jia J, You H. Diethyldithiocarbamate, an anti-abuse drug, alleviates steatohepatitis and fibrosis in rodents through modulating lipid metabolism and oxidative stress. Br J Pharmacol 2018; 175:4480-4495. [PMID: 30266038 DOI: 10.1111/bph.14503] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 08/23/2018] [Accepted: 09/15/2018] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND AND PURPOSE Diethyldithiocarbamate (DDC) is a major metabolite of disulfiram that is a potential drug for alcoholism treatment. In the present study, we attempted to explore the possible effect of DDC on non-alcoholic fatty liver disease (NAFLD) and related fibrosis in vivo. EXPERIMENTAL APPROACH C57BL/6 mice and Sprague Dawley (SD) rats received a methionine/choline-deficient (MCD) diet to establish the model of NAFLD with or without DDC treatment. The livers and serum were assessed for histological changes and parameters related to lipid metabolism, liver injury, inflammation and fibrosis. Apoptosis and macrophage related markers were assessed by immunohistochemistry (IHC). KEY RESULTS DDC significantly reduced hepatic steatosis in rats with NAFLD, induced by the MCD diet. DDC reduced the oxidative stress and endoplasmic reticulum stress-related parameters in mice with non-alcoholic steatohepatitis, induced by the MCD diet. IHC for Bax and cleaved caspase-3 showed that DDC inhibited the apoptosis of hepatocytes in the liver. DDC significantly reduced ballooning and Mallory-Denk bodies (MDB) in hepatocytes, accompanied by suppression of serum alanine aminotransferase, aspartate aminotransferase and MDB formation-related genes. DDC significantly alleviated hepatic inflammation, accompanied by suppression of inflammation-related genes. DDC suppressed the infiltration of macrophages, particularly inducible NOS-positive pro-inflammatory macrophages. In addition, DDC significantly alleviated liver fibrosis. Microarray analyses showed that DDC strongly affected lipid metabolism and oxidative stress-related processes and pathways. CONCLUSION AND IMPLICATIONS DDC improves hepatic steatosis, ballooning, inflammation and fibrosis in rodent models of NAFLD through modulating lipid metabolism and oxidative stress.
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Affiliation(s)
- Tianhui Liu
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University.,Beijing Key Laboratory of Translational Medicine in Liver Cirrhosis and National Clinical Research Center of Digestive Disease, Beijing, China
| | - Ping Wang
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University.,Beijing Key Laboratory of Translational Medicine in Liver Cirrhosis and National Clinical Research Center of Digestive Disease, Beijing, China
| | - Min Cong
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University.,Beijing Key Laboratory of Translational Medicine in Liver Cirrhosis and National Clinical Research Center of Digestive Disease, Beijing, China
| | - Xinyan Zhao
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University.,Beijing Key Laboratory of Translational Medicine in Liver Cirrhosis and National Clinical Research Center of Digestive Disease, Beijing, China
| | - Dong Zhang
- Experimental and Translational Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Hufeng Xu
- Experimental and Translational Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Lin Liu
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University.,Beijing Key Laboratory of Translational Medicine in Liver Cirrhosis and National Clinical Research Center of Digestive Disease, Beijing, China
| | - Jidong Jia
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University.,Beijing Key Laboratory of Translational Medicine in Liver Cirrhosis and National Clinical Research Center of Digestive Disease, Beijing, China
| | - Hong You
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University.,Beijing Key Laboratory of Translational Medicine in Liver Cirrhosis and National Clinical Research Center of Digestive Disease, Beijing, China
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98
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Zhang Z, Qi Y, Kong W, Jin Q, Wang X, Dong Y, Wang Y, Li H. Efficacy and Clinical Value of Liraglutide for Treatment of Diabetes Mellitus Complicated by Non-Alcoholic Fatty Liver Disease. Med Sci Monit 2018; 24:7399-7404. [PMID: 30325900 PMCID: PMC6199821 DOI: 10.12659/msm.911062] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 06/14/2018] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND The aim of this study was to investigate the efficacy and clinical value of liraglutide for the treatment of patients with diabetes mellitus (DM) complicated by non-alcoholic fatty liver disease (NAFLD). MATERIAL AND METHODS Patients with DM complicated by NAFLD (n=835) were enrolled. Patients were divided into 2 groups: 424 patients were included in the liraglutide group and 411 patients were included in the conventional drug group. Venous blood was collected to test blood glucose levels, blood lipid levels, and liver function. After discharge, patients were followed up for between 6 months and 1 year and assigned a quality-of-life score. RESULTS The blood glucose levels of patients in both groups were improved after treatment (P<0.05). The blood lipid levels of patients in both groups improved after treatment (P<0.05). Various blood lipid parameters of patients in the liraglutide group were significantly better than in the conventional drug group (P<0.05). The liver function of patients in the conventional drug group was not significantly different before or after treatment (P>0.05), while in the liraglutide group it improved significantly after treatment (P<0.05). The average quality-of-life score at follow-up in the liraglutide group was 81.00±9.33 points, which was significantly higher than the 68.53±8.44 points in the conventional drug group (P<0.05). CONCLUSIONS Liraglutide for the treatment of DM complicated by NAFLD can effectively improve the blood glucose and lipid levels as well as liver function of patients.
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Affiliation(s)
- Zhongyong Zhang
- Department of Endocrinology, Hebei Province Cangzhou Hospital of Integrated Traditional And Western Medicine, Cangzhou, Hebei, P.R. China
| | - Yueying Qi
- Department of Digestive Liver Disease, Hebei Province Cangzhou Hospital of Integrated Traditional and Western Medicine, Cangzhou, Hebei, P.R. China
| | - Wubao Kong
- Department of Endocrinology, Hebei Province Cangzhou Hospital of Integrated Traditional And Western Medicine, Cangzhou, Hebei, P.R. China
| | - Qianqian Jin
- Department of Endocrinology, Hebei Province Cangzhou Hospital of Integrated Traditional And Western Medicine, Cangzhou, Hebei, P.R. China
| | - Xiaoyun Wang
- Department of Endocrinology, Hebei Province Cangzhou Hospital of Integrated Traditional And Western Medicine, Cangzhou, Hebei, P.R. China
| | - Yanfang Dong
- Department of Endocrinology, Hebei Province Cangzhou Hospital of Integrated Traditional And Western Medicine, Cangzhou, Hebei, P.R. China
| | - Yuansong Wang
- Department of Endocrinology, Hebei Province Cangzhou Hospital of Integrated Traditional And Western Medicine, Cangzhou, Hebei, P.R. China
| | - Huajun Li
- Department of Endocrinology, Hebei Province Cangzhou Hospital of Integrated Traditional And Western Medicine, Cangzhou, Hebei, P.R. China
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99
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RAGE deficiency does not affect non-alcoholic steatohepatitis and atherosclerosis in Western type diet-fed Ldlr -/- mice. Sci Rep 2018; 8:15256. [PMID: 30323247 PMCID: PMC6189204 DOI: 10.1038/s41598-018-33661-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 09/28/2018] [Indexed: 01/11/2023] Open
Abstract
Non-alcoholic fatty liver disease is a spectrum of liver diseases ranging from steatosis only to non-alcoholic steatohepatitis (NASH). The latter is characterized by hepatic inflammation, which increases the risk of cardiovascular disease. It is poorly understood which factors contribute to the onset of hepatic inflammation characterizing the progression from steatosis to NASH. Previously, we demonstrated increased advanced glycation endproducts (AGEs) in the livers of NASH patients. We hypothesise that AGEs play a key role in NASH development by activating their proinflammatory receptor, RAGE. RAGE-deficient mice and wildtype littermates, both on Ldlr−/− background, were fed a Western type diet (WTD) for 3 or 12 weeks. Flow cytometry, histology, gene expression and AGE measurements were performed to evaluate the effects of RAGE deficiency. RAGE-deficient mice displayed reduced weight gain and visceral fat expansion compared to control mice. No difference in adipose tissue inflammation was observed between groups. RAGE deficiency did not affect WTD-induced monocytosis, circulating lipids or hepatic steatosis. WTD-induced hepatic neutrophil and macrophage accumulation and atherosclerotic plaque development was comparable between control and RAGE-deficient mice. No difference in AGE levels was observed. RAGE does not seem to play a major role in the development of NASH or atherosclerosis in a hyperlipidemic mouse model.
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García-Monzón C, Petrov PD, Rey E, Marañón P, Del Pozo-Maroto E, Guzmán C, Rodríguez de Cía J, Casado-Collado AJ, Vargas-Castrillón J, Saez A, Miquilena-Colina ME, Lo Iacono O, Castell JV, González-Rodríguez Á, Jover R. Angiopoietin-Like Protein 8 Is a Novel Vitamin D Receptor Target Gene Involved in Nonalcoholic Fatty Liver Pathogenesis. THE AMERICAN JOURNAL OF PATHOLOGY 2018; 188:2800-2810. [PMID: 30248338 DOI: 10.1016/j.ajpath.2018.07.028] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 07/30/2018] [Accepted: 07/31/2018] [Indexed: 02/06/2023]
Abstract
Hepatic vitamin D receptor (VDR) expression is increased in patients with nonalcoholic fatty liver (NAFL) and is required for liver steatosis in an NAFL mouse model. However, how hepatocyte VDR is involved in setting up steatosis remains unclear. The authors transduced human hepatocyte-derived cells with an adenoviral vector encoding human VDR and found that angiopoietin-like protein 8 (ANGPTL8) expression was increased upon VDR activation by vitamin D or lithocholic acid. The mRNA levels of hepatic VDR- and vitamin D-related genes [cytochrome P450 (CYP) 2R1, CYP27A1, and CYP3A4] were higher in NAFL patients compared with normal liver subjects. Noteworthy, hepatic ANGPTL8 mRNA and protein levels were elevated in NAFL patients, and its mRNA correlated with VDR mRNA and with the steatosis grade. Moreover, increases in serum conjugated bile acids, including the VDR agonist glycine-lithocholic acid, were observed in NAFL patients. Additionally, free fatty acids and insulin were able to up-regulate both VDR and ANGPTL8 mRNA in human hepatocytes, whereas ANGPTL8 gene knockdown attenuated free fatty acids-induced triglyceride accumulation in these cells. In conclusion, activated VDR up-regulates ANGPTL8 expression, contributing to triglyceride accumulation in human hepatocytes. Moreover, hepatic ANGPTL8 mRNA positively correlates with VDR mRNA content and the grade of steatosis in NAFL patients, suggesting that this novel pathway may play a key role in the pathogenesis of hepatosteatosis.
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Affiliation(s)
- Carmelo García-Monzón
- Liver Research Unit, Santa Cristina University Hospital, Instituto de Investigación Sanitaria Princesa, Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Madrid, Spain.
| | - Petar D Petrov
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Madrid, Spain; Experimental Hepatology Unit, Instituto de Investigación Sanitaria La Fe, Valencia, Spain
| | - Esther Rey
- Liver Research Unit, Santa Cristina University Hospital, Instituto de Investigación Sanitaria Princesa, Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Madrid, Spain
| | - Patricia Marañón
- Liver Research Unit, Santa Cristina University Hospital, Instituto de Investigación Sanitaria Princesa, Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Madrid, Spain
| | - Elvira Del Pozo-Maroto
- Liver Research Unit, Santa Cristina University Hospital, Instituto de Investigación Sanitaria Princesa, Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Madrid, Spain
| | - Carla Guzmán
- Experimental Hepatology Unit, Instituto de Investigación Sanitaria La Fe, Valencia, Spain
| | - Javier Rodríguez de Cía
- Liver Research Unit, Santa Cristina University Hospital, Instituto de Investigación Sanitaria Princesa, Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Madrid, Spain
| | - Alfonso J Casado-Collado
- Liver Research Unit, Santa Cristina University Hospital, Instituto de Investigación Sanitaria Princesa, Madrid, Spain
| | - Javier Vargas-Castrillón
- Liver Research Unit, Santa Cristina University Hospital, Instituto de Investigación Sanitaria Princesa, Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Madrid, Spain
| | - Alicia Saez
- Liver Research Unit, Santa Cristina University Hospital, Instituto de Investigación Sanitaria Princesa, Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Madrid, Spain
| | - María E Miquilena-Colina
- Liver Research Unit, Santa Cristina University Hospital, Instituto de Investigación Sanitaria Princesa, Madrid, Spain
| | - Oreste Lo Iacono
- Gastroenterology Unit, Hospital del Tajo, Aranjuez, Madrid, Spain
| | - José V Castell
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Madrid, Spain; Experimental Hepatology Unit, Instituto de Investigación Sanitaria La Fe, Valencia, Spain; Departamento de Bioquímica y Biología Molecular, Universitat de València, Valencia, Spain
| | - Águeda González-Rodríguez
- Liver Research Unit, Santa Cristina University Hospital, Instituto de Investigación Sanitaria Princesa, Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Madrid, Spain
| | - Ramiro Jover
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Madrid, Spain; Experimental Hepatology Unit, Instituto de Investigación Sanitaria La Fe, Valencia, Spain; Departamento de Bioquímica y Biología Molecular, Universitat de València, Valencia, Spain
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