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Shi T, Wu L, Ma W, Ju L, Bai M, Chen X, Liu S, Yang X, Shi J. Nonalcoholic Fatty Liver Disease: Pathogenesis and Treatment in Traditional Chinese Medicine and Western Medicine. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2020; 2020:8749564. [PMID: 31998400 PMCID: PMC6969649 DOI: 10.1155/2020/8749564] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 11/14/2019] [Accepted: 11/20/2019] [Indexed: 01/30/2023]
Abstract
Nonalcoholic Fatty Liver Disease (NAFLD) is one of the most important causes of liver disease worldwide and probably destined to become the leading cause of end-stage liver disease in the coming decades, affecting both adults and children. Faced with the severe challenges for the prevention and control of NAFLD, this article discusses the understanding and mechanism of NAFLD from Chinese and Western medicine. Moreover, the progress regarding its treatment in both Chinese and Western medicine is also summarized. Both Chinese medicine and Western medicine have their own characteristics and clinical efficacy advantages in treating diseases. The purpose of this article is to hope that Chinese and Western medicine have complementary advantages, complementing each other to improve clinical NAFLD therapy prevention and treatment methods to receive more and more attention throughout the global medical community.
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Affiliation(s)
- Tingting Shi
- The Hangzhou Xixi Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou 310023, Zhejiang, China
| | - Li Wu
- Center of Clinical Evaluation, The First Affiliated Hospital of Zhejiang Chinese Medical University, 54 Youdian Road, Hangzhou 310006, Zhejiang, China
| | - Wenjun Ma
- The Hangzhou Xixi Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou 310023, Zhejiang, China
| | - Liping Ju
- The Hangzhou Xixi Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou 310023, Zhejiang, China
| | - Minghui Bai
- The Hangzhou Xixi Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou 310023, Zhejiang, China
| | - Xiaowei Chen
- The Hangzhou Xixi Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou 310023, Zhejiang, China
| | - Shourong Liu
- The Hangzhou Xixi Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou 310023, Zhejiang, China
| | - Xingxin Yang
- College of Pharmaceutical Science, Yunnan University of Traditional Chinese Medicine, 1076 Yuhua Road, Kunming 650500, Yunnan, China
| | - Junping Shi
- Department of Liver Diseases, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang, China
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152
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He X, Gao J, Hou H, Qi Z, Chen H, Zhang XX. Inhibition of Mitochondrial Fatty Acid Oxidation Contributes to Development of Nonalcoholic Fatty Liver Disease Induced by Environmental Cadmium Exposure. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:13992-14000. [PMID: 31682409 DOI: 10.1021/acs.est.9b05131] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Cadmium (Cd) is one of the most prevalent toxic metal pollutants widely distributed in water and soil environments. Epidemiological studies have shown that exposure to Cd is implicated in the prevalence of nonalcoholic fatty liver disease (NAFLD) in middle-aged human population, but biological evidence is lacking and its toxicological mechanism remains unclear for the disease predisposition from environmental Cd exposure. In this study, we established a chronic Cd-exposure mouse model mimicking the liver Cd deposition in middle-aged human population to determine whether the environmental Cd exposure can induce NAFLD. Results showed that hepatic Cd burden at levels of 0.95 and 6.04 μg/g wet weight resulting from 20-week Cd exposure at different doses induced NAFLD and nonalcoholic steatohepatitis-like phenotypes in mice, respectively. The Cd exposure caused marked hepatic mitochondrial dysfunction and fatty acid oxidation deficiency, along with significant suppression of sirtuin 1 (SIRT1) signaling pathway in the liver. In vitro study confirmed that Cd evidently inhibited the mitochondrial fatty acid oxidation in hepatocytes and that SIRT1 signaling was potentially involved in the process. Our findings suggest that exposure to environmental Cd is a tangible risk factor for NAFLD, and the induced public health risks deserve greater attention.
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153
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Abstract
AbstractDietary protein insufficiency has been linked to excessive TAG storage and non-alcoholic fatty liver disease (NAFLD) in developing countries. Hepatic TAG accumulation following a low-protein diet may be due to altered peroxisomal, mitochondrial and gut microbiota function. Hepatic peroxisomes and mitochondria normally mediate metabolism of nutrients to provide energy and substrates for lipogenesis. Peroxisome biogenesis and activities can be modulated by odd-chain fatty acids (OCFA) and SCFA that are derived from gut bacteria, for example, propionate and butyrate. Also produced during amino acid metabolism by peroxisomes and mitochondria, propionate and butyrate concentrations correlate inversely with risk of obesity, insulin resistance and NAFLD. In this horizon-scanning review, we have compiled available evidence on the effects of protein malnutrition on OCFA production, arising from loss in mitochondrial, peroxisomal and gut microbiota function, and its association with lipid accumulation in the liver. The methyl donor amino acid composition of dietary protein is an important contributor to liver function and lipid storage; the presence and abundance of dietary branched-chain amino acids can modulate the composition and metabolic activity of the gut microbiome and, on the other hand, can affect protective OCFA and SCFA production in the liver. In preclinical animal models fed with low-protein diets, specific amino acid supplementation can ameliorate fatty liver disease. The association between low dietary protein intake and fatty liver disease is underexplored and merits further investigation, particularly in vulnerable groups with dietary protein restriction in developing countries.
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154
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Physical exercise and liver "fitness": Role of mitochondrial function and epigenetics-related mechanisms in non-alcoholic fatty liver disease. Mol Metab 2019; 32:1-14. [PMID: 32029220 PMCID: PMC6931125 DOI: 10.1016/j.molmet.2019.11.015] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 11/19/2019] [Accepted: 11/22/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Modern lifestyles, especially high-caloric intake and physical inactivity, contribute to the increased prevalence of non-alcoholic fatty liver disease (NAFLD), which becomes a significant health problem worldwide. Lifestyle changes, however, affect not only parental generation, but also their offspring, reinforcing the need for efficient preventive approaches to deal with this disease. This transgenerational influence of phenotypes dependent on parents (particularly maternal) behaviours may open additional research avenues. Despite persistent attempts to design an effective pharmacological therapy against NAFLD, physical activity, as a non-pharmacological approach, emerges as an exciting strategy. SCOPE OF REVIEW Here we briefly review the effect of physical exercise on liver mitochondria adaptations in NAFLD, highlighting the importance of mitochondrial metabolism and transgenerational and epigenetic mechanisms in liver diseases. MAJOR CONCLUSIONS A deeper look into cellular mechanisms sheds a light on possible effects of physical activity in the prevention and treatment of NAFLD through modulation of function and structure of particular organelles, namely mitochondria. Additionally, despite of increasing evidence regarding the contribution of epigenetic mechanisms in the pathogenesis of different diseases, the role of microRNAs, DNA methylation, and histone modification in NAFLD pathogenesis still needs to be elucidated.
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155
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Role of farnesoid X receptor in hepatic steatosis in nonalcoholic fatty liver disease. Biomed Pharmacother 2019; 121:109609. [PMID: 31731192 DOI: 10.1016/j.biopha.2019.109609] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 10/23/2019] [Accepted: 10/25/2019] [Indexed: 12/12/2022] Open
Abstract
With the increased incidence of obesity, nonalcoholic fatty liver disease (NAFLD) has become a major global health concern. The pathogenesis of NAFLD has not yet been fully elucidated, and as few efficient pharmaceutical treatments are available for the condition, economic and medical burdens are heavy. Hepatic steatosis, as a precursor of NAFLD, plays a vital role in the pathological process of NAFLD. Hepatic steatosis is a consequence of lipid acquisition (i.e. free fatty acid uptake and de novo lipogenesis) exceeding lipid disposal (i.e. fatty acid oxidation and export as very-low-density lipoproteins). Therefore, restoring lipid homeostasis in the liver is an important therapeutic strategy of NAFLD. Farnesoid X receptor (FXR) is a major member of the ligand-activated nuclear receptor superfamily. Previous reviews have shown that FXR is a multipurpose receptor that plays an important role in regulating bile acid homeostasis, glucose and lipid metabolism, intestinal bacterial growth, and hepatic regeneration. This review focuses on the role of FXR in individual pathways that contribute to hepatic steatosis; it further demonstrates the molecular function of FXR in the pathogenesis of NAFLD.
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156
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Gao Y, Kim S, Lee YI, Lee J. Cellular Stress-Modulating Drugs Can Potentially Be Identified by in Silico Screening with Connectivity Map (CMap). Int J Mol Sci 2019; 20:ijms20225601. [PMID: 31717493 PMCID: PMC6888006 DOI: 10.3390/ijms20225601] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 11/05/2019] [Accepted: 11/06/2019] [Indexed: 12/27/2022] Open
Abstract
Accompanied by increased life span, aging-associated diseases, such as metabolic diseases and cancers, have become serious health threats. Recent studies have documented that aging-associated diseases are caused by prolonged cellular stresses such as endoplasmic reticulum (ER) stress, mitochondrial stress, and oxidative stress. Thus, ameliorating cellular stresses could be an effective approach to treat aging-associated diseases and, more importantly, to prevent such diseases from happening. However, cellular stresses and their molecular responses within the cell are typically mediated by a variety of factors encompassing different signaling pathways. Therefore, a target-based drug discovery method currently being used widely (reverse pharmacology) may not be adequate to uncover novel drugs targeting cellular stresses and related diseases. The connectivity map (CMap) is an online pharmacogenomic database cataloging gene expression data from cultured cells treated individually with various chemicals, including a variety of phytochemicals. Moreover, by querying through CMap, researchers may screen registered chemicals in silico and obtain the likelihood of drugs showing a similar gene expression profile with desired and chemopreventive conditions. Thus, CMap is an effective genome-based tool to discover novel chemopreventive drugs.
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Affiliation(s)
- Yurong Gao
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Korea; (Y.G.); (S.K.)
| | - Sungwoo Kim
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Korea; (Y.G.); (S.K.)
| | - Yun-Il Lee
- Well Aging Research Center, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Korea
- Correspondence: (Y.-I.L.); (J.L.)
| | - Jaemin Lee
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Korea; (Y.G.); (S.K.)
- Correspondence: (Y.-I.L.); (J.L.)
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157
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Golabi P, Rhea L, Henry L, Younossi ZM. Hepatocellular carcinoma and non-alcoholic fatty liver disease. Hepatol Int 2019; 13:688-694. [PMID: 31701393 DOI: 10.1007/s12072-019-09995-8] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 10/10/2019] [Indexed: 12/19/2022]
Abstract
Nonalcoholic fatty liver disease (NAFLD) is considered the most common liver disorder worldwide, affecting 25.2% of the general population. In fact, NAFLD is among the most common etiologies for hepatocellular carcinoma (HCC). The burden of NAFLD is primarily driven by the epidemic of obesity and type 2 diabetes which are expected to worsen throughout the world. In this context, the burden of NAFLD and associated HCC and cirrhosis are also expected to increase. Despite its growing disease burden, diagnostic tools and treatment modalities remain very limited. This conundrum of increasing prevalence and limited treatment options will be reflected as increasing number of NAFLD-related cirrhosis and HCC cases. This article reviews the most updated information about NAFLD-related HCC and provides some insight into strategies that must be considered to reduce its potential disease burden.
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Affiliation(s)
- Pegah Golabi
- Center For Liver Disease, Department of Medicine, Inova Fairfax Medical Campus, Falls Church, VA, USA
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Claude Moore Health Education and Research Building, 3300 Gallows Road, Falls Church, VA, 22042, USA
| | - Logan Rhea
- Center For Liver Disease, Department of Medicine, Inova Fairfax Medical Campus, Falls Church, VA, USA
| | - Linda Henry
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Claude Moore Health Education and Research Building, 3300 Gallows Road, Falls Church, VA, 22042, USA
| | - Zobair M Younossi
- Center For Liver Disease, Department of Medicine, Inova Fairfax Medical Campus, Falls Church, VA, USA.
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Claude Moore Health Education and Research Building, 3300 Gallows Road, Falls Church, VA, 22042, USA.
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158
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Léveillé M, Estall JL. Mitochondrial Dysfunction in the Transition from NASH to HCC. Metabolites 2019; 9:E233. [PMID: 31623280 PMCID: PMC6836234 DOI: 10.3390/metabo9100233] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 09/26/2019] [Accepted: 10/11/2019] [Indexed: 02/06/2023] Open
Abstract
The liver constantly adapts to meet energy requirements of the whole body. Despite its remarkable adaptative capacity, prolonged exposure of liver cells to harmful environmental cues (such as diets rich in fat, sugar, and cholesterol) results in the development of chronic liver diseases (including non-alcoholic fatty liver disease (NAFLD) and non-alcoholic steatohepatitis (NASH)) that can progress to hepatocellular carcinoma (HCC). The pathogenesis of these diseases is extremely complex, multifactorial, and poorly understood. Emerging evidence suggests that mitochondrial dysfunction or maladaptation contributes to detrimental effects on hepatocyte bioenergetics, reactive oxygen species (ROS) homeostasis, endoplasmic reticulum (ER) stress, inflammation, and cell death leading to NASH and HCC. The present review highlights the potential contribution of altered mitochondria function to NASH-related HCC and discusses how agents targeting this organelle could provide interesting treatment strategies for these diseases.
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Affiliation(s)
- Mélissa Léveillé
- Institut de Recherches Cliniques de Montréal (IRCM), Montreal, Quebec, QC H2W 1R7, Canada.
- Faculty of Medicine, University of Montreal, Montreal, Quebec, QC H3G 2M1, Canada.
| | - Jennifer L Estall
- Institut de Recherches Cliniques de Montréal (IRCM), Montreal, Quebec, QC H2W 1R7, Canada.
- Faculty of Medicine, University of Montreal, Montreal, Quebec, QC H3G 2M1, Canada.
- Division of Experimental Medicine, McGill University, Montreal, Quebec, QC H4A 3J1, Canada.
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159
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Krishnasamy Y, Gooz M, Li L, Lemasters JJ, Zhong Z. Role of mitochondrial depolarization and disrupted mitochondrial homeostasis in non-alcoholic steatohepatitis and fibrosis in mice. INTERNATIONAL JOURNAL OF PHYSIOLOGY, PATHOPHYSIOLOGY AND PHARMACOLOGY 2019; 11:190-204. [PMID: 31777643 PMCID: PMC6872485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 09/10/2019] [Indexed: 06/10/2023]
Abstract
The pathogenesis of non-alcoholic steatohepatitis (NASH) is poorly understood. Here, relationships between mitochondrial depolarization (mtDepo) and mitochondrial homeostasis were studied in a mouse model of NASH. C57BL/6 mice were fed a Western diet (high fat, fructose and cholesterol) for 2 weeks, 2 months and 6 months, and livers were harvested for histology and biochemical analysis. Hepatic mtDepo was evaluated by intravital multiphoton microscopy. After Western diet feeding, mixed hepatic micro- and macrovesicular steatosis and leukocyte infiltration occurred at 2 weeks and continued to increase afterwards. ALT release, mild necrosis, apoptosis, and ballooning degeneration were present at 2 and 6 months. Smooth muscle α-actin expression increased at 2 weeks and longer, and increased collagen-I expression and mild fibrosis occurred at 6 months. After feeding Western diet for 2 weeks and longer, mtDepo appeared in 50-70% hepatocytes, indicating mitochondrial dysfunction at an early stage of NASH. mtDepo can initiate mitophagy, and mitophagic markers increased at 2 and 6 months. Concurrently autophagic processing became impaired. Oxidative phosphorylation proteins, mitochondrial biogenesis signals, and proteins associated with mitochondrial fission and fusion decreased after 2 months and longer of Western diet. Proinflammatory and profibrotic signaling (NLRP3 inflammasome activation, expression of IL-1, osteopontin and TGF-β1) also increased in association with mitochondrial stress/dysfunction after Western diet feeding. Taken together, we show that hepatic mtDepo occurs early in mice fed a Western diet, followed by increased mitophagic burden, suppressed mitochondrial biogenesis and dynamics, and mitochondrial depletion. These novel mitochondrial alterations in NASH most likely play an important role in promoting steatosis, inflammation, and progression to fibrosis.
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Affiliation(s)
- Yasodha Krishnasamy
- Department of Drug Discovery and Biomedical Sciences, Medical University of South CarolinaCharleston, SC 29425, USA
| | - Monika Gooz
- Department of Drug Discovery and Biomedical Sciences, Medical University of South CarolinaCharleston, SC 29425, USA
| | - Li Li
- Department of Drug Discovery and Biomedical Sciences, Medical University of South CarolinaCharleston, SC 29425, USA
| | - John J Lemasters
- Department of Drug Discovery and Biomedical Sciences, Medical University of South CarolinaCharleston, SC 29425, USA
- Department of Biochemistry and Molecular Biology, Medical University of South CarolinaCharleston, SC 29425, USA
| | - Zhi Zhong
- Department of Drug Discovery and Biomedical Sciences, Medical University of South CarolinaCharleston, SC 29425, USA
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160
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Shen S, Yu H, Gan L, Ye Y, Lin L. Natural constituents from food sources: potential therapeutic agents against muscle wasting. Food Funct 2019; 10:6967-6986. [PMID: 31599912 DOI: 10.1039/c9fo00912d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Skeletal muscle wasting is highly correlated with not only reduced quality of life but also higher morbidity and mortality. Although an increasing number of patients are suffering from various kinds of muscle atrophy and weakness, there is still no effective therapy available, and skeletal muscle is considered as an under-medicated organ. Food provided not only essential macronutrients but also functional substances involved in the modulation of the physiological systems of our body. Natural constituents from commonly consumed dietary plants, either extracts or compounds, have attracted more and more attention to be developed as agents for preventing and treating muscle wasting due to their safety and effectiveness, as well as structural diversity. This review provides an overview of the mechanistic aspects of muscle wasting, and summarizes the extracts and compounds from food sources as potential therapeutic agents against muscle wasting.
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Affiliation(s)
- Shengnan Shen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, China.
| | - Hua Yu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, China.
| | - Lishe Gan
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Yang Ye
- State Key Laboratory of Drug Research, and Natural Products Chemistry Department, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Ligen Lin
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, China.
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161
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Yu X, Hao M, Liu Y, Ma X, Lin W, Xu Q, Zhou H, Shao N, Kuang H. Liraglutide ameliorates non-alcoholic steatohepatitis by inhibiting NLRP3 inflammasome and pyroptosis activation via mitophagy. Eur J Pharmacol 2019; 864:172715. [PMID: 31593687 DOI: 10.1016/j.ejphar.2019.172715] [Citation(s) in RCA: 100] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 09/26/2019] [Accepted: 10/01/2019] [Indexed: 02/06/2023]
Abstract
Non-alcoholic steatohepatitis (NASH) is a key step in the progression of non-alcoholic fatty liver disease (NAFLD), which causes serious health problems worldwide. The nucleotide-binding oligomerization domain, leucine-rich repeat-containing receptor-containing pyrin domain 3 (NLRP3) inflammasome and pyroptosis play crucial roles in the progression of NASH. Our team has provided clinical evidence of the effects of glucagon-like peptide-1 (GLP-1) on the improvement in liver function and histological resolution of NAFLD. Preliminary work has demonstrated that GLP-1 inhibited NLRP3 inflammasome activation in a mouse model of NAFLD. We further explored the potential molecular mechanisms underlying the anti-inflammatory effect of liraglutide, a long-acting GLP-1 analog, in the treatment of NASH. We established a HepG2 cell model of NASH using double stimulation with palmitic acid and lipopolysaccharide to assess NLRP3 inflammasome and pyroptotic cell activity and to evaluate mitochondrial function and mitophagy. Liraglutide reduced lipid accumulation, inhibited NLRP3 inflammasome and pyroptosis activation, attenuated mitochondrial dysfunction and reactive oxygen species generation, augmented mitophagy in hepatocytes. Mitophagy inhibition with 3-methyladenine/PINK1-directed siRNA weakened the liraglutide-mediated suppression of inflammatory injury. We propose that liraglutide suppresses NLRP3 inflammasome-induced hepatocyte pyroptosis via mitophagy to slow the progression of NASH.
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Affiliation(s)
- Xinyang Yu
- Department of Endocrinology, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Ming Hao
- Department of Endocrinology, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Yu Liu
- Department of Endocrinology, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Xuefei Ma
- Department of Endocrinology, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Wenjian Lin
- Department of Endocrinology, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Qian Xu
- Department of Endocrinology, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Huanran Zhou
- Department of Endocrinology, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Ning Shao
- Department of Endocrinology, The First Hospital of Harbin, Harbin, Heilongjiang, China
| | - HongYu Kuang
- Department of Endocrinology, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China.
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162
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Lee J, Park JS, Roh YS. Molecular insights into the role of mitochondria in non-alcoholic fatty liver disease. Arch Pharm Res 2019; 42:935-946. [DOI: 10.1007/s12272-019-01178-1] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Accepted: 08/09/2019] [Indexed: 02/06/2023]
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163
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Fang K, Wu F, Chen G, Dong H, Li J, Zhao Y, Xu L, Zou X, Lu F. Diosgenin ameliorates palmitic acid-induced lipid accumulation via AMPK/ACC/CPT-1A and SREBP-1c/FAS signaling pathways in LO2 cells. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 19:255. [PMID: 31519174 PMCID: PMC6743105 DOI: 10.1186/s12906-019-2671-9] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 09/03/2019] [Indexed: 12/30/2022]
Abstract
BACKGROUND Non-alcoholic fatty liver disease (NAFLD) is the most common chronic liver disease and is characterized by excessive hepatic lipid accumulation. Many studies have suggested that lipid overload is the key initial factor that contributes to hepatic steatosis. Our previous study indicated that diosgenin (DSG) has a beneficial effect on energy metabolism, but the underlying mechanism remains unclear. METHODS Human normal hepatocytes (LO2 cells) were incubated with palmitic acid to establish the cell model of nonalcoholic fatty liver. The effects of DSG on lipid metabolism, glucose uptake and mitochondrial function were evaluated. Furthermore, the mechanism of DSG on oxidative stress, lipid consumption and lipid synthesis in LO2 cells was investigated. RESULTS The results indicated that palmitic acid induced obvious lipid accumulation in LO2 cells and that DSG treatment significantly reduced the intracellular lipid content. DSG treatment upregulated expression of lipolysis proteins, including phospho-AMP activated protein kinase (p-AMPK), phospho-acetyl-coA carboxylase (p-ACC) and carnitine acyl transferase 1A (CPT-1A), and inhibited expression of lipid synthesis-related proteins, including sterol regulatory element-binding protein 1c (SREBP-1c) and fatty acid synthase (FAS). Additionally, DSG-treated cells displayed a marked improvement in mitochondrial function, with less production of reactive oxygen species and a higher mitochondrial membrane potential compared with the model group. CONCLUSION This study suggests that DSG can reduce intracellular lipid accumulation in LO2 cells and that the underlying mechanism may be related to the improving oxidative stress, increasing fatty acid β-oxidation and decreasing lipid synthesis. The above changes might be mediated by the activation of the AMPK/ACC/CPT-1A pathway and inhibition of the SREBP-1c/FAS pathway.
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164
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Choi JY, Kwon EY, Choi MS. Elucidation of the Metabolic and Transcriptional Responses of an Oriental Herbal Medicine, Bangpungtongseong-san, to Nonalcoholic Fatty Liver Disease in Diet-Induced Obese Mice. J Med Food 2019; 22:928-936. [PMID: 31390281 DOI: 10.1089/jmf.2018.4383] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Bangpungtongseong-san (BT), an oriental herbal medicine, is used to treat obesity in Korea and East Asia and its antiobesity effects have been examined by several researchers. However, the molecular mechanisms of the antihepatic steatosis effects of BT are unclear. In this study, we examined the effects of BT on obesity, particularly nonalcoholic fatty liver disease, by analyzing metabolic and transcriptional responses using mRNA-sequencing profiles. C57BL/6J mice were fed a high-fat diet (HFD) or HFD + BT (1.5%, w/w, BT) for 12 weeks. Phenotype characteristics were estimated, and the antiobesity mechanism was examined using mRNA sequencing transcriptomic profiles in HFD-induced obese mice. BT treatment ameliorated dyslipidemia and hepatic steatosis in HFD-induced obese mice and reduced body weight gain. The levels of hepatic lipotoxicity markers were significantly decreased, while hepatic antioxidant enzyme activities were augmented by BT compared with in the HFD group. BT attenuated HFD-induced fatty liver through transcriptional changes in the liver. BT treatment downregulated mitochondrial oxidative phosphorylation-related genes in the liver, suggesting improved mitochondrial function. BT treatment also decreased the hepatic fibrosis-related transcriptome. Our findings provide insight into the antiobesity effects of BT, an alternative oriental medicine, for treating obesity-related conditions. Metabolic and transcriptional responses to diet-induced obesity with BT treatment improved liver function.
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Affiliation(s)
- Ji-Young Choi
- Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, Korea
| | - Eun-Young Kwon
- Department of Food Sciences and Nutrition, Kyungpook National University, Daegu, Korea.,Center for Food and Nutritional Genomics Research, Kyungpook National University, Daegu, Korea
| | - Myung-Sook Choi
- Department of Food Sciences and Nutrition, Kyungpook National University, Daegu, Korea.,Center for Food and Nutritional Genomics Research, Kyungpook National University, Daegu, Korea
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165
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Migliaccio V, Gregorio ID, Putti R, Lionetti L. Mitochondrial Involvement in the Adaptive Response to Chronic Exposure to Environmental Pollutants and High-Fat Feeding in a Rat Liver and Testis. Cells 2019; 8:E834. [PMID: 31387296 PMCID: PMC6721750 DOI: 10.3390/cells8080834] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 07/28/2019] [Accepted: 08/03/2019] [Indexed: 02/07/2023] Open
Abstract
In our modern society, exposure to stressful environmental stimuli, such as pollutants and/or chronic high-fat feeding, continuously induce tissular/organ metabolic adaptation to promote cellular survival. In extreme conditions, cellular death and tissular/organ damage occur. Mitochondria, as a cellular energy source, seem to play an important role in facing cellular stress induced by these environmental stimuli. On the other hand, mitochondrial dysfunction and oxidative stress play a key role in environmental stress-induced metabolic diseases. However, little is known about the combined effect of simultaneous exposure to chronic high-fat feeding and environmental pollutants on metabolic alterations at a tissular and cellular level, including mitochondrial dysfunction and oxidative stress induction. Our research group recently addressed this topic by analysing the effect of chronic exposure to a non-toxic dose of the environmental pollutant dichlorodiphenyldichloroethylene (DDE) associated with high-fat feeding in male Wistar rats. In this review, we mainly summarize our recent findings on mitochondrial adaptive response and oxidative stress induction in the liver, the main tissue involved in fat metabolism and pollutant detoxification, and in male gonads, the main targets of endocrine disruption induced by both high-fat feeding and environmental pollutants.
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Affiliation(s)
- Vincenzo Migliaccio
- Department of Chemistry and Biology "Adolfo Zambelli", University of Salerno, 84084 Fisciano, Italy.
- Department of Biology, University of Naples, Federico II, 80126 Naples, Italy.
| | - Ilaria Di Gregorio
- Department of Chemistry and Biology "Adolfo Zambelli", University of Salerno, 84084 Fisciano, Italy
| | - Rosalba Putti
- Department of Biology, University of Naples, Federico II, 80126 Naples, Italy
| | - Lillà Lionetti
- Department of Chemistry and Biology "Adolfo Zambelli", University of Salerno, 84084 Fisciano, Italy.
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166
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Chen YH, Chiu CC, Hung SW, Huang WC, Lee YP, Liu JY, Huang YT, Chen TH, Chuang HL. Gnotobiotic mice inoculated with Firmicutes, but not Bacteroidetes, deteriorate nonalcoholic fatty liver disease severity by modulating hepatic lipid metabolism. Nutr Res 2019; 69:20-29. [PMID: 31470288 DOI: 10.1016/j.nutres.2019.07.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 06/11/2019] [Accepted: 07/25/2019] [Indexed: 12/19/2022]
Abstract
Nonalcoholic fatty liver disease (NAFLD) is a serious liver disorder and characterized by the hepatic accumulation of excess fatty acids. Clinical studies and animal models have shown a shift of gut microbiota from bacteroidetes to firmicutes in NAFLD patients and a diet-induced NAFLD mouse model. Therefore, we hypothesized that these 2 groups of bacteria may have differential effects on lipid metabolism in the liver, which further contributed to pathogenesis of NAFLD. To elucidate these effects, we inoculated two species of Bacteroidetes (B-group) or five species of Firmicutes (F-group) which were isolated from healthy individuals into germ-free mice. We found that the F-group induced elevated body weight, liver weight, and hepatic steatosis compared to the B-group under high-fat diet (HFD) conditions. The mRNA expression level of cluster of differentiation 36 (CD36) was elevated in the F-group compared to that in the B-group. Increased mRNA expression levels of fatty acid synthase (FAS), stearoyl-CoA desaturase-1 (SCD1), and diacylglycerol O-acyltransferase 2 (DGAT2) were also seen under HFD conditions in the F-group compared to that in the B-group. In addition, the expression level of miR802-5p was only elevated in the F-group under HFD conditions. Taken together, our results suggested that these specific species of Firmicutes may induce more hepatic steatosis by modulating fatty acid influx and lipogenesis compared to those of Bacteroidetes. These results may provide more understanding of the effects of gut microbiota on NAFLD.
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Affiliation(s)
- Yi-Hsun Chen
- Graduate Institute of Veterinary Pathobiology, National Chung Hsing University, Taichung, 402, Taiwan.
| | - Chien-Chao Chiu
- Division of Animal Industry, Animal Technology Laboratories, Agricultural Technology Research Institute, Miaoli, 350, Taiwan.
| | - Shao-Wen Hung
- Division of Animal Industry, Animal Technology Laboratories, Agricultural Technology Research Institute, Miaoli, 350, Taiwan.
| | - Wen-Ching Huang
- Department of Exercise and Health Science, National Taipei University of Nursing and Health Sciences, Taipei, 112, Taiwan.
| | - Yen-Peng Lee
- Graduate Institute of Veterinary Pathobiology, National Chung Hsing University, Taichung, 402, Taiwan.
| | - Ju-Yun Liu
- Department of Microbiology, National Taiwan University College of Medicine, Taipei, 100, Taiwan; National Laboratory Animal Center, National Applied Research Laboratories Research Institute, Taipei, 115, Taiwan.
| | - Yen-Te Huang
- National Laboratory Animal Center, National Applied Research Laboratories Research Institute, Taipei, 115, Taiwan.
| | - Ter-Hsin Chen
- Graduate Institute of Veterinary Pathobiology, National Chung Hsing University, Taichung, 402, Taiwan.
| | - Hsiao-Li Chuang
- National Laboratory Animal Center, National Applied Research Laboratories Research Institute, Taipei, 115, Taiwan.
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167
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Sinton MC, Hay DC, Drake AJ. Metabolic control of gene transcription in non-alcoholic fatty liver disease: the role of the epigenome. Clin Epigenetics 2019; 11:104. [PMID: 31319896 PMCID: PMC6637519 DOI: 10.1186/s13148-019-0702-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 07/09/2019] [Indexed: 01/30/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is estimated to affect 24% of the global adult population. NAFLD is a major risk factor for the development of cirrhosis and hepatocellular carcinoma, as well as being strongly associated with type 2 diabetes and cardiovascular disease. It has been proposed that up to 88% of obese adults have NAFLD, and with global obesity rates increasing, this disease is set to become even more prevalent. Despite intense research in this field, the molecular processes underlying the pathology of NAFLD remain poorly understood. Hepatic intracellular lipid accumulation may lead to dysregulated tricarboxylic acid (TCA) cycle activity and associated alterations in metabolite levels. The TCA cycle metabolites alpha-ketoglutarate, succinate and fumarate are allosteric regulators of the alpha-ketoglutarate-dependent dioxygenase family of enzymes. The enzymes within this family have multiple targets, including DNA and chromatin, and thus may be capable of modulating gene transcription in response to intracellular lipid accumulation through alteration of the epigenome. In this review, we discuss what is currently understood in the field and suggest areas for future research which may lead to the development of novel preventative or therapeutic interventions for NAFLD.
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Affiliation(s)
- Matthew C Sinton
- University/British Heart Foundation Centre for Cardiovascular Science, The Queen's Medical Research Institute, University of Edinburgh, 47 Little France Crescent, Edinburgh, EH16 4TJ, UK
| | - David C Hay
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, EH16 4UU, UK
| | - Amanda J Drake
- University/British Heart Foundation Centre for Cardiovascular Science, The Queen's Medical Research Institute, University of Edinburgh, 47 Little France Crescent, Edinburgh, EH16 4TJ, UK.
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168
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Yang XX, Wang X, Shi TT, Dong JC, Li FJ, Zeng LX, Yang M, Gu W, Li JP, Yu J. Mitochondrial dysfunction in high-fat diet-induced nonalcoholic fatty liver disease: The alleviating effect and its mechanism of Polygonatum kingianum. Biomed Pharmacother 2019; 117:109083. [PMID: 31387169 DOI: 10.1016/j.biopha.2019.109083] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Revised: 06/03/2019] [Accepted: 06/03/2019] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Mitochondrial dysfunction is an important mechanism of non-alcoholic fatty liver disease (NAFLD). Developing mitochondrial regulators/nutrients from natural products to remedy mitochondrial dysfunction represent attractive strategies for NAFLD therapy. In China, Polygonatum kingianum (PK) has been used as a herb and food nutrient for centuries. So far, studies in which the effects of PK on NAFLD are evaluated are lacking. Our study aims at identifying the effects and mechanism of action of PK on NAFLD based on mitochondrial regulation. METHODS A NAFLD rat model was induced by a high-fat diet (HFD) and rats were intragastrically given PK (1, 2 and 4 g/kg) for 14 weeks. Changes in body weight, food intake, histological parameters, organ indexes, biochemical parameters and mitochondrial indicators involved in oxidative stress, energy metabolism, fatty acid metabolism, and apoptosis were investigated. RESULTS PK significantly inhibited the HFD-induced increase of alanine transaminase, aspartate transaminase, total cholesterol (TC), and low density lipoprotein cholesterol in serum, and TC and triglyceride in the liver. In addition, PK reduced high density lipoprotein cholesterol and liver enlargement without affecting food intake. PK also remarkably inhibited the HFD-induced increase of malondialdehyde and the reduction of superoxide dismutase, glutathione peroxidase, ATP synthase, and complex I and II, in mitochondria. Moreover, mRNA expression of carnitine palmitoyl transferase-1 and uncoupling protein-2 was significantly up-regulated and down-regulated after PK treatment, respectively. Finally, PK notably inhibited the HFD-induced increase of caspase 9, caspase 3 and Bax expression in hepatocytes, and the decrease of expression of Bcl-2 in hepatocytes and cytchrome c in mitochondria. CONCLUSION PK alleviated HFD-induced NAFLD by promoting mitochondrial functions. Thus, PK may be useful mitochondrial regulators/nutrients to remedy mitochondrial dysfunction and alleviate NAFLD.
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Affiliation(s)
- Xing-Xin Yang
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine, 1076 Yuhua Road, Kunming, 650500, China; Kunming Key Laboratory for Metabolic Diseases Prevention and Treatment by Chinese Medicine, 1076 Yuhua Road, Kunming, 650500, China
| | - Xi Wang
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine, 1076 Yuhua Road, Kunming, 650500, China; Kunming Key Laboratory for Metabolic Diseases Prevention and Treatment by Chinese Medicine, 1076 Yuhua Road, Kunming, 650500, China
| | - Ting-Ting Shi
- Department of Pharmaceutical Preparation, The Xixi Hospital of Hangzhou Affiliated to Zhejiang University of Traditional Chinese medicine, Hangzhou, 310023, China
| | - Jin-Cai Dong
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine, 1076 Yuhua Road, Kunming, 650500, China; Kunming Key Laboratory for Metabolic Diseases Prevention and Treatment by Chinese Medicine, 1076 Yuhua Road, Kunming, 650500, China
| | - Feng-Jiao Li
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine, 1076 Yuhua Road, Kunming, 650500, China; Kunming Key Laboratory for Metabolic Diseases Prevention and Treatment by Chinese Medicine, 1076 Yuhua Road, Kunming, 650500, China
| | - Lin-Xi Zeng
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine, 1076 Yuhua Road, Kunming, 650500, China; Kunming Key Laboratory for Metabolic Diseases Prevention and Treatment by Chinese Medicine, 1076 Yuhua Road, Kunming, 650500, China
| | - Min Yang
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine, 1076 Yuhua Road, Kunming, 650500, China; Kunming Key Laboratory for Metabolic Diseases Prevention and Treatment by Chinese Medicine, 1076 Yuhua Road, Kunming, 650500, China
| | - Wen Gu
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine, 1076 Yuhua Road, Kunming, 650500, China; Kunming Key Laboratory for Metabolic Diseases Prevention and Treatment by Chinese Medicine, 1076 Yuhua Road, Kunming, 650500, China
| | - Jing-Ping Li
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine, 1076 Yuhua Road, Kunming, 650500, China; Kunming Key Laboratory for Metabolic Diseases Prevention and Treatment by Chinese Medicine, 1076 Yuhua Road, Kunming, 650500, China
| | - Jie Yu
- College of Pharmaceutical Science, Yunnan University of Chinese Medicine, 1076 Yuhua Road, Kunming, 650500, China; Kunming Key Laboratory for Metabolic Diseases Prevention and Treatment by Chinese Medicine, 1076 Yuhua Road, Kunming, 650500, China.
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169
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Raffaele M, Bellner L, Singh SP, Favero G, Rezzani R, Rodella LF, Falck JR, Abraham NG, Vanella L. Epoxyeicosatrienoic intervention improves NAFLD in leptin receptor deficient mice by an increase in HO-1-PGC1α mitochondrial signaling. Exp Cell Res 2019; 380:180-187. [DOI: 10.1016/j.yexcr.2019.04.029] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 04/22/2019] [Accepted: 04/23/2019] [Indexed: 02/07/2023]
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170
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Caporarello N, Meridew JA, Jones DL, Tan Q, Haak AJ, Choi KM, Manlove LJ, Prakash YS, Tschumperlin DJ, Ligresti G. PGC1α repression in IPF fibroblasts drives a pathologic metabolic, secretory and fibrogenic state. Thorax 2019; 74:749-760. [PMID: 31182654 DOI: 10.1136/thoraxjnl-2019-213064] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 04/16/2019] [Accepted: 05/18/2019] [Indexed: 12/11/2022]
Abstract
Idiopathic pulmonary fibrosis (IPF) is a fatal ageing-related disease linked to mitochondrial dysfunction. The present study aimed to determine whether peroxisome proliferator activated receptor gamma co-activator 1-alpha (PPARGC1A, encoding PGC1α), a master regulator of mitochondrial biogenesis, is diminished in IPF and controls pathologic fibroblast activation. Primary human IPF, control lung fibroblasts and fibroblasts sorted from bleomycin-injured mice were used to evaluate the expression and function of PGC1α. In vitro PGC1α manipulation was performed by small interfering RNA knockdown or overexpression. Fibroblast activation was assessed by quantitative PCR, Western blotting, matrix deposition, secreted cytokine array, immunofluorescence and traction force microscopy. Mitochondrial function was assessed by Seahorse analyzer and mitochondria mass and number by flow cytometry, mitochondrial DNA quantification and transmission electron microscopy (TEM). We found that PGC1α levels are stably repressed in IPF fibroblasts. After bleomycin injury in young mice, PGC1α expression drops transiently but then increases prior to fibrosis resolution. In contrast, PGC1α expression fails to recover in aged mice with persistent fibrosis. PGC1α knockdown alone in normal human lung fibroblasts reduces mitochondrial mass and function while enhancing contractile and matrix synthetic fibroblast activation, senescence-related gene expression and soluble profibrotic and prosenescence signalling. Re-expression of PGC1α in IPF fibroblasts ameliorates all of these pathological cellular functions. Pharmacological treatment of IPF fibroblasts with rosiglitazone, but not thyroid hormone, elevated PGC1α expression and attenuated fibroblast activation. The sustained repression of PGC1α and beneficial effects of its rescue in IPF fibroblasts identifies PGC1α as an important regulator of the fibroblast's pathological state in IPF.
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Affiliation(s)
- Nunzia Caporarello
- Physiology & Biomedical Engineering, Mayo Clinic Minnesota, Rochester, Minnesota, USA
| | - Jeffrey A Meridew
- Physiology & Biomedical Engineering, Mayo Clinic Minnesota, Rochester, Minnesota, USA
| | - Dakota L Jones
- Physiology & Biomedical Engineering, Mayo Clinic Minnesota, Rochester, Minnesota, USA
| | - Qi Tan
- Physiology & Biomedical Engineering, Mayo Clinic Minnesota, Rochester, Minnesota, USA
| | - Andrew J Haak
- Physiology & Biomedical Engineering, Mayo Clinic Minnesota, Rochester, Minnesota, USA
| | - Kyoung M Choi
- Physiology & Biomedical Engineering, Mayo Clinic Minnesota, Rochester, Minnesota, USA
| | - Logan J Manlove
- Anesthesiology and Perioperative Medicine, Mayo Clinic Minnesota, Rochester, Minnesota, USA
| | - Y S Prakash
- Physiology & Biomedical Engineering, Mayo Clinic Minnesota, Rochester, Minnesota, USA.,Anesthesiology and Perioperative Medicine, Mayo Clinic Minnesota, Rochester, Minnesota, USA
| | - Daniel J Tschumperlin
- Physiology & Biomedical Engineering, Mayo Clinic Minnesota, Rochester, Minnesota, USA
| | - Giovanni Ligresti
- Physiology & Biomedical Engineering, Mayo Clinic Minnesota, Rochester, Minnesota, USA
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171
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Gong F, Gao L, Ding T. IDH2 protects against nonalcoholic steatohepatitis by alleviating dyslipidemia regulated by oxidative stress. Biochem Biophys Res Commun 2019; 514:593-600. [DOI: 10.1016/j.bbrc.2019.04.069] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 04/09/2019] [Indexed: 12/16/2022]
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172
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Chang CW, Lo JF, Wang XW. Roles of mitochondria in liver cancer stem cells. Differentiation 2019; 107:35-41. [PMID: 31176254 DOI: 10.1016/j.diff.2019.04.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 04/03/2019] [Accepted: 04/09/2019] [Indexed: 02/08/2023]
Abstract
Primary liver cancer (PLC) is heterogeneous and it is an aggressive malignancy with a poor prognostic outcome. Current evidence suggests that PLC tumorigenesis is driven by rare subpopulations of cancer stem cells (CSCs), which contribute to tumor initiation, progression, and therapy resistance through particular molecular mechanisms. Energy metabolism and mitochondrial function play an important role in the regulation of cancer stemness and stem cell specifications. Since the role of mitochondrial function as central hubs in cell growth and survival, studies on the critical physiological mechanisms of the liver underlying their therapy-resistant phenotype is important. In this review, we focus on liver CSC-related mitochondrial metabolism that contributes to the liver CSC features, in terms of enhanced drug-resistance and increased tumorigenicity, and to discuss their roles on potential therapies windows for PLC therapies.
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Affiliation(s)
- Ching-Wen Chang
- Laboratory of Human Carcinogenesis, National Cancer Institute, Bethesda, MD, USA
| | - Jeng-Fan Lo
- Institute of Oral Biology, National Yang-Ming University, Taipei, Taiwan; Cancer Progression Center of Excellence, National Yang-Ming University, Taipei, Taiwan
| | - Xin Wei Wang
- Laboratory of Human Carcinogenesis, National Cancer Institute, Bethesda, MD, USA; Liver Cancer Program, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA.
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173
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Luangmonkong T, Suriguga S, Mutsaers HAM, Groothuis GMM, Olinga P, Boersema M. Targeting Oxidative Stress for the Treatment of Liver Fibrosis. Rev Physiol Biochem Pharmacol 2019; 175:71-102. [PMID: 29728869 DOI: 10.1007/112_2018_10] [Citation(s) in RCA: 161] [Impact Index Per Article: 32.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Oxidative stress is a reflection of the imbalance between the production of reactive oxygen species (ROS) and the scavenging capacity of the antioxidant system. Excessive ROS, generated from various endogenous oxidative biochemical enzymes, interferes with the normal function of liver-specific cells and presumably plays a role in the pathogenesis of liver fibrosis. Once exposed to harmful stimuli, Kupffer cells (KC) are the main effectors responsible for the generation of ROS, which consequently affect hepatic stellate cells (HSC) and hepatocytes. ROS-activated HSC undergo a phenotypic switch and deposit an excessive amount of extracellular matrix that alters the normal liver architecture and negatively affects liver function. Additionally, ROS stimulate necrosis and apoptosis of hepatocytes, which causes liver injury and leads to the progression of end-stage liver disease. In this review, we overview the role of ROS in liver fibrosis and discuss the promising therapeutic interventions related to oxidative stress. Most importantly, novel drugs that directly target the molecular pathways responsible for ROS generation, namely, mitochondrial dysfunction inhibitors, endoplasmic reticulum stress inhibitors, NADPH oxidase (NOX) inhibitors, and Toll-like receptor (TLR)-affecting agents, are reviewed in detail. In addition, challenges for targeting oxidative stress in the management of liver fibrosis are discussed.
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Affiliation(s)
- Theerut Luangmonkong
- Department of Pharmaceutical Technology and Biopharmacy, University of Groningen, Groningen, The Netherlands.,Department of Pharmacology, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
| | - Su Suriguga
- Department of Pharmaceutical Technology and Biopharmacy, University of Groningen, Groningen, The Netherlands
| | - Henricus A M Mutsaers
- Department of Pharmaceutical Technology and Biopharmacy, University of Groningen, Groningen, The Netherlands.,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Geny M M Groothuis
- Department of Pharmacokinetics, Toxicology and Targeting, University of Groningen, Groningen, The Netherlands
| | - Peter Olinga
- Department of Pharmaceutical Technology and Biopharmacy, University of Groningen, Groningen, The Netherlands.
| | - Miriam Boersema
- Department of Pharmaceutical Technology and Biopharmacy, University of Groningen, Groningen, The Netherlands
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174
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The Alisma and Rhizoma decoction abates nonalcoholic steatohepatitis-associated liver injuries in mice by modulating oxidative stress and autophagy. Altern Ther Health Med 2019; 19:92. [PMID: 31035991 PMCID: PMC6489313 DOI: 10.1186/s12906-019-2488-6] [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: 10/25/2018] [Accepted: 03/24/2019] [Indexed: 02/07/2023]
Abstract
Background To investigate the effects of the Alisma and Rhizoma decoction on nonalcoholic steatohepatitis (NASH) and to further shed light on the underlying mechanisms of the actions of the Alisma and Rhizoma decoction. Methods Plasma alanine aminotransferase (ALT) content was determined and liver inflammation and fibrosis were evaluated. Intrahepatocellular malondialdehyde and superoxide dismutase contents were determined using commercially available kits Furthermore, α-SMA expression in liver tissues was examined by immunohistochemistry and LC3-II was detected by immunoblotting assays. Results Mice receiving the Alisma and Rhizoma decoction by gastric lavage had significantly lower plasma ALT content and markedly higher hepatic superoxide dismutase activity than mice receiving the methionine-choline deficient (MCD) diet. Furthermore, the decoction aborted MCD-induced increase in liver malondialdehyde content. Immunohistochemistry showed that the decoction suppressed hepatic α-SMA expression. Our transmission electronic microscopy revealed that the decoction markedly reduced the number of autophagosomes and immunoblotting assays showed that the decoction caused a dose-dependent decrease in LC3-II in hepatic tissues. Conclusion The Alisma and Rhizoma decoction lessens NASH-associated liver injuries by modulating oxidative stress and autophagy in hepatocytes of mice fed with MCD. Electronic supplementary material The online version of this article (10.1186/s12906-019-2488-6) contains supplementary material, which is available to authorized users.
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175
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Migliaccio V, Scudiero R, Sica R, Lionetti L, Putti R. Oxidative stress and mitochondrial uncoupling protein 2 expression in hepatic steatosis induced by exposure to xenobiotic DDE and high fat diet in male Wistar rats. PLoS One 2019; 14:e0215955. [PMID: 31022254 PMCID: PMC6483212 DOI: 10.1371/journal.pone.0215955] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 04/11/2019] [Indexed: 02/07/2023] Open
Abstract
Oxidative stress plays a key role in steatohepatitis induced by both xenobiotic agents and high fat diet (HFD). The present study aimed to evaluate hepatic oxidative stress and anti-oxidant systems response in rats exposed to HFD and/or non-toxic dose of dichlorodiphenyldichloroethylene (DDE), the first metabolite of dichlorodiphenyltrichloroethane. Groups of 8 rats were so treated for 4 weeks: 1- standard diet (N group); 2- standard diet plus DDE (10 mg/kg b.w.) (N+DDE group); 3- HFD (D group); 4- HFD plus DDE (D+DDE group). Oxidative stress was analyzed by determining malondialdehyde as lipid peroxidation product, while the anti-oxidant systems were evaluating by measuring the levels of the principal cytosolic and mitochondrial antioxidant proteins and enzymes, namely superoxide dismutase 1 and 2 (SOD1, SOD2), glutathione peroxidase 1 (GPx1) and uncoupling protein 2 (UCP2) involved in the control of hepatic reactive oxygens species (ROS) accumulation. The results showed malondialdehyde accumulation in livers of all groups, confirming the pro-oxidant effects of both HFD and DDE, but with a greater effect of DDE in absence of HFD. In addition, we found different levels of the analyzed anti-oxidant systems in the different groups. DDE mainly induced UCP2 and SOD2, while HFD mainly induced GPx1. Noteworthy, in the condition of simultaneous exposure to DDE and HFD, the anti-oxidant response was more similar to the one induced by HFD than to the response induced by DDE. Present findings confirmed that both HFD and xenobiotic exposure induced hepatic oxidative stress and showed that the anti-oxidant defense response was not the same in the diverse groups, suggesting that UCP2 induction could be an adaptive response to limit excessive ROS damage, mainly in condition of xenobiotic exposure.
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Affiliation(s)
- Vincenzo Migliaccio
- Department of Biology, University of Naples, Federico II, Naples, Italy
- Department of Chemistry and Biology “Adolfo Zambelli”, University of Salerno, Fisciano, Italy
| | - Rosaria Scudiero
- Department of Biology, University of Naples, Federico II, Naples, Italy
| | - Raffaella Sica
- Department of Biology, University of Naples, Federico II, Naples, Italy
| | - Lillà Lionetti
- Department of Chemistry and Biology “Adolfo Zambelli”, University of Salerno, Fisciano, Italy
| | - Rosalba Putti
- Department of Biology, University of Naples, Federico II, Naples, Italy
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176
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Liu HW, Kao HH, Wu CH. Exercise training upregulates SIRT1 to attenuate inflammation and metabolic dysfunction in kidney and liver of diabetic db/db mice. Nutr Metab (Lond) 2019; 16:22. [PMID: 30988688 PMCID: PMC6446356 DOI: 10.1186/s12986-019-0349-4] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 03/26/2019] [Indexed: 02/06/2023] Open
Abstract
Background Chronic inflammation and metabolic dysregulation may eventually cause tissue damage in obesity-related diseases such as type 2 diabetes. The effects of SIRT1 on integration of metabolism and inflammation may provide a therapeutic target for treatment of obesity-related diseases. We examined the underlying mechanism of moderate intensity aerobic exercise on kidney and liver in obese diabetic db/db mice, mainly focusing on inflammation and metabolic dysfunction. Methods Functional and morphological alterations and metabolic and inflammatory signaling were examined in type 2 diabetic db/db mice with or without exercise training (5.2 m/min, 1 h/day, and 5 days/week for a total of 8 weeks). Results Exercise training prevented weight gain in db/db + Ex mice, but it did not reduce glucose and insulin levels. Exercise lowered serum creatinine, urea, and triglyceride levels and hepatic AST and ALT activity in db/db + Ex mice. Reduced kidney size and morphological alterations including decreased glomerular cross-sectional area and hepatic macrovesicles were observed in db/db + Ex mice compared with untrained db/db mice. Mechanistically, preventing loss of SIRT1 through exercise was linked to reduced acetylation of NF-κB in kidney and liver of db/db + Ex mice. Exercise increased citrate synthase and mitochondrial complex I activity, subunits of mitochondrial complexes (I, II, and V) and PGC1α at protein level in kidney of db/db + Ex mice compared with non-exercise db/db mice. Changes in enzyme activity and subunits of mitochondrial complexes were not observed in liver among three groups. Conclusion Exercise-induced upregulation of SIRT1 attenuates inflammation and metabolic dysfunction, thereby alleviating the progression of diabetic nephropathy and hepatic steatosis in type 2 diabetes mellitus.
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Affiliation(s)
- Hung-Wen Liu
- Department of Physical Education, National Taiwan Normal University, 162, Section 1, Heping E. Rd, Taipei City, Taiwan
| | - Hao-Han Kao
- Department of Physical Education, National Taiwan Normal University, 162, Section 1, Heping E. Rd, Taipei City, Taiwan
| | - Chi-Hang Wu
- Department of Physical Education, National Taiwan Normal University, 162, Section 1, Heping E. Rd, Taipei City, Taiwan
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177
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Minamoto T, Walzem RL, Hamilton AJ, Hill SL, Payne HR, Lidbury JA, Suchodolski JS, Steiner JM. Altered lipoprotein profiles in cats with hepatic lipidosis. J Feline Med Surg 2019; 21:363-372. [PMID: 29860906 PMCID: PMC10814635 DOI: 10.1177/1098612x18780060] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
OBJECTIVES The aim of this study was to assess serum lipoprotein profiles using rapid single-spin continuous lipoprotein density profiling (CLPDP) in healthy control cats and cats with hepatic lipidosis (HL). METHODS Analysis of serum lipoprotein profiles using the CLPDP was performed in 23 cats with HL and 20 healthy control cats. The area under the curve for each lipoprotein fraction, triglyceride (TG)-rich lipoproteins (TRLs), low-density lipoproteins (LDLs) and high-density lipoproteins (HDLs), was calculated. Serum cholesterol and TG concentrations were measured using a clinical chemistry analyzer. RESULTS Serum cholesterol and TG concentrations were not significantly different between healthy control cats and cats with HL ( P = 0.5075 and P = 0.2541, respectively). LDL content was significantly higher in cats with HL than in healthy control cats ( P = 0.0001), while HDL content was significantly lower in cats with HL than in healthy control cats ( P = 0.0032). TRL content was not significantly different between the two groups ( P = 0.0699). The specific fraction (1.037-1.043 g/ml) within nominal LDL in serum distinguished healthy control cats from cats with HL with a sensitivity of 87% and a specificity of 90%. CONCLUSIONS AND RELEVANCE Serum lipoprotein profiles were altered in cats with HL, even though serum cholesterol and TG concentrations were not significantly different compared with healthy control cats. The CLPDP might be a useful tool for assessing lipid metabolism in cats with HL.
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Affiliation(s)
- Tomomi Minamoto
- Gastrointestinal Laboratory, Department of Small Animal Clinical Sciences, Texas A&M University, College Station, TX, USA
| | - Rosemary L Walzem
- Department of Poultry Science and Faculty of Nutrition, Texas A&M University, College Station, TX, USA
| | | | - Steve L Hill
- Veterinary Specialty Hospital, San Diego, CA, USA
| | - Harold R Payne
- Image Analysis Laboratory, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Jonathan A Lidbury
- Gastrointestinal Laboratory, Department of Small Animal Clinical Sciences, Texas A&M University, College Station, TX, USA
| | - Jan S Suchodolski
- Gastrointestinal Laboratory, Department of Small Animal Clinical Sciences, Texas A&M University, College Station, TX, USA
| | - Jörg M Steiner
- Gastrointestinal Laboratory, Department of Small Animal Clinical Sciences, Texas A&M University, College Station, TX, USA
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García-Roche M, Casal A, Mattiauda DA, Ceriani M, Jasinsky A, Mastrogiovanni M, Trostchansky A, Carriquiry M, Cassina A, Quijano C. Impaired hepatic mitochondrial function during early lactation in dairy cows: Association with protein lysine acetylation. PLoS One 2019; 14:e0213780. [PMID: 30870481 PMCID: PMC6417696 DOI: 10.1371/journal.pone.0213780] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 03/01/2019] [Indexed: 12/11/2022] Open
Abstract
Early lactation is an energy-demanding period for dairy cows which may lead to negative energy balance, threatening animal health and consequently productivity. Herein we studied hepatic mitochondrial function in Holstein-Friesian multiparous dairy cows during lactation, under two different feeding strategies. During the first 180 days postpartum the cows were fed a total mixed ration (70% forage: 30% concentrate) ad libitum (non-grazing group, G0) or grazed Festuca arundinacea or Mendicago sativa plus supplementation (grazing group, G1). From 180 to 250 days postpartum, all cows grazed Festuca arundinacea and were supplemented with total mixed ration. Mitochondrial function was assessed measuring oxygen consumption rate in liver biopsies and revealed that maximum respiratory rate decreased significantly in grazing cows during early lactation, yet was unchanged in non-grazing cows during the lactation curve. While no differences could be found in mitochondrial content or oxidative stress markers, a significant increase in protein lysine acetylation was found in grazing cows during early lactation but not in cows from the non-grazing group. Mitochondrial acetylation positively correlated with liver triglycerides and β-hydroxybutyrate plasma levels, well-known markers of negative energy balance, while a negative correlation was found with the maximum respiratory rate and sirtuin 3 levels. To our knowledge this is the first report of mitochondrial function in liver biopsies of dairy cows during lactation. On the whole our results indicate that mitochondrial function is impaired during early lactation in grazing cows and that acetylation may account for changes in mitochondrial function in this period. Additionally, our results suggest that feeding total mixed ration during early lactation may be an efficient protective strategy.
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Affiliation(s)
- Mercedes García-Roche
- Center for Free Radical and Biomedical Research (CEINBIO) and Departamento de Bioquímica, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
- Departamento de Producción Animal y Pasturas, Facultad de Agronomía, Universidad de la República, Montevideo, Uruguay
| | - Alberto Casal
- Departamento de Producción Animal y Pasturas, Estación Experimental Mario A. Cassinoni, Facultad de Agronomía, Universidad de la República, Paysandú, Uruguay
| | - Diego A. Mattiauda
- Departamento de Producción Animal y Pasturas, Estación Experimental Mario A. Cassinoni, Facultad de Agronomía, Universidad de la República, Paysandú, Uruguay
| | - Mateo Ceriani
- Departamento de Producción Animal y Pasturas, Estación Experimental Mario A. Cassinoni, Facultad de Agronomía, Universidad de la República, Paysandú, Uruguay
| | - Alejandra Jasinsky
- Departamento de Producción Animal y Pasturas, Estación Experimental Mario A. Cassinoni, Facultad de Agronomía, Universidad de la República, Paysandú, Uruguay
| | - Mauricio Mastrogiovanni
- Center for Free Radical and Biomedical Research (CEINBIO) and Departamento de Bioquímica, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Andrés Trostchansky
- Center for Free Radical and Biomedical Research (CEINBIO) and Departamento de Bioquímica, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Mariana Carriquiry
- Departamento de Producción Animal y Pasturas, Facultad de Agronomía, Universidad de la República, Montevideo, Uruguay
- * E-mail: (CQ); (AC); (MC)
| | - Adriana Cassina
- Center for Free Radical and Biomedical Research (CEINBIO) and Departamento de Bioquímica, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
- * E-mail: (CQ); (AC); (MC)
| | - Celia Quijano
- Center for Free Radical and Biomedical Research (CEINBIO) and Departamento de Bioquímica, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
- * E-mail: (CQ); (AC); (MC)
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179
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Berberine Ameliorates High-Fat Diet-Induced Non-Alcoholic Fatty Liver Disease in Rats via Activation of SIRT3/AMPK/ACC Pathway. Curr Med Sci 2019; 39:37-43. [PMID: 30868489 DOI: 10.1007/s11596-019-1997-3] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 12/03/2018] [Indexed: 12/12/2022]
Abstract
This study aimed to verify the effects of berberine (BBR) on the fat metabolism proteins involved in the sirtuin 3 (SIRT3)/adenosine 5'-monophosphate (AMP)-activated protein kinase (AMPK)/acetyl-CoA carboxylase (ACC) pathway in the liver tissues of rats with high-fat diet (HFD)-induced non-alcoholic fatty liver disease (NAFLD). Forty-eight rats were randomly divided into the normal control (NC) group, HFD group or BBR group, with 16 rats in each group. After 8 and 16 weeks of treatment, serum and liver samples were collected. Subsequently, body parameters, biochemical parameters and liver pathology were examined. The expression levels of proteins involved in the SIRT3/AMPK/ACC pathway in the liver were detected by Western blotting. After 8 and 16 weeks of a HFD, the successful establishment of rat models with different degrees of NAFLD was confirmed by hematoxylin and eosin (H&E) and Oil Red O staining. NAFLD rat models exhibited obesity and hyperlipidemia, and the protein expression levels of SIRT3, p-AMPK, p-ACC, and CPT-1A in the liver were significantly decreased compared to those in the NC group. The concurrent administration of BBR with the HFD effectively improved serum and liver lipid profiles and ameliorated liver injury. Furthermore, the protein expression levels of SIRT3, p-AMPK, p-ACC, and CPT-1A in the liver were significantly increased in the BBR group as compared with those in the HFD group. In conclusion, our data suggest that the mechanism by which BBR ameliorates HFD-induced hepatic steatosis may be related to the activation of the SIRT3/AMPK/ACC pathway in the liver.
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180
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Rafiei H, Omidian K, Bandy B. Dietary Polyphenols Protect Against Oleic Acid-Induced Steatosis in an in Vitro Model of NAFLD by Modulating Lipid Metabolism and Improving Mitochondrial Function. Nutrients 2019; 11:nu11030541. [PMID: 30832407 PMCID: PMC6471211 DOI: 10.3390/nu11030541] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 02/27/2019] [Accepted: 02/27/2019] [Indexed: 12/13/2022] Open
Abstract
In this study, we aimed to determine the relative effectiveness of common dietary polyphenols or the isoquinoline alkaloid berberine in protecting against molecular mechanisms underlying non-alcoholic fatty liver disease (NAFLD) involving changes to cellular lipid metabolism and bioenergetics. In a model of steatosis using HepG2 hepatocytes, exposure of the cells to 1.5 mM oleic acid (OA) for 24 h caused steatosis and distorted cell morphology, induced the expression of mRNA for enzymes that are involved in lipogenesis and fatty acid oxidation (FAS and CPT1A), and impaired indices of aerobic energy metabolism (PPARγ mRNA expression, mitochondrial membrane potential (MMP), and galactose-supported ATP production). Co-treatment with 10 µM of selected polyphenols all strongly protected against the steatosis and changes in cell morphology. All polyphenols, except cyanidin, inhibited the effects on FAS and PPARγ and further increased CPT1A1 expression, suggesting a shift toward increased β-oxidation. Resveratrol, quercetin, catechin, and cyanidin, however not kuromanin or berberine, ameliorated the decreases in MMP and galactose-derived ATP. Berberine was unique in worsening the decrease in galactose-derived ATP. In further investigations of the mechanisms involved, resveratrol, catechin, and berberine increased SIRT1 enzyme activity and p-AMPKαThr172 protein, which are involved in mitochondrial biogenesis. In conclusion, selected polyphenols all protected against steatosis with similar effectiveness, however through different mechanisms that increased aerobic lipid metabolism and mitochondrial function.
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Affiliation(s)
- Hossein Rafiei
- Nutrition Division, College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK S7N 2Z4, Canada.
| | - Kosar Omidian
- Nutrition Division, College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK S7N 2Z4, Canada.
| | - Brian Bandy
- Nutrition Division, College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK S7N 2Z4, Canada.
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181
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Akhmedov VA, Gaus OV. Role of intestinal microbiota in the formation of non-alcoholic fatty liver disease. TERAPEVT ARKH 2019; 91:143-148. [DOI: 10.26442/00403660.2019.02.000051] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The article provides an overview of modern views on the role of intestinal microbiota in the formation of non-alcoholic fatty liver disease. The general questions of the pathogenesis of the syndrome of excessive bacterial growth in the intestine, the participation of opportunistic microflora, the deficit of representatives of normal microflora, changes in the species composition of bile acids in the pathogenesis of nonalcoholic fatty liver disease are considered.
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182
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Prisingkorn W, Jakovlić I, Yi SK, Deng FY, Zhao YH, Wang WM. Gene expression patterns indicate that a high-fat–high-carbohydrate diet causes mitochondrial dysfunction in fish. Genome 2019; 62:53-67. [DOI: 10.1139/gen-2018-0159] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Expensive and unsustainable fishmeal is increasingly being replaced with cheaper lipids and carbohydrates as sources of energy in aquaculture. Although it is known that the excess of lipids and carbohydrates has negative effects on nutrient utilization, growth, metabolic homeostasis, and health of fish, our current understanding of mechanisms behind these effects is limited. To improve the understanding of diet-induced metabolic disorders (both in fish and other vertebrates), we conducted an eight-week high-fat–high-carbohydrate diet feeding trial on blunt snout bream (Megalobrama amblycephala), and studied gene expression changes (transcriptome and qPCR) in the liver. Disproportionately large numbers of differentially expressed genes were associated with mitochondrial metabolism, neurodegenerative diseases (Alzheimer’s, Huntington’s, and Parkinson’s), and functional categories indicative of liver dysfunction. A high-fat–high-carbohydrate diet may have caused mitochondrial dysfunction, and possibly downregulated the mitochondrial biogenesis in the liver. While the relationship between diet and neurodegenerative disorders is well-established in mammals, this is the first report of this connection in fish. We propose that fishes should be further explored as a potentially promising model to study the mechanisms of diet-associated neurodegenerative disorders in humans.
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Affiliation(s)
- Wassana Prisingkorn
- College of Fisheries Huazhong Agricultural University, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan 430070, P.R. China
| | - Ivan Jakovlić
- Bio-Transduction Lab, Wuhan Institute of Biotechnology, Wuhan 430075, P.R. China
| | - Shao-Kui Yi
- College of Fisheries Huazhong Agricultural University, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan 430070, P.R. China
| | - Fang-Yu Deng
- College of Fisheries Huazhong Agricultural University, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan 430070, P.R. China
| | - Yu-Hua Zhao
- College of Fisheries Huazhong Agricultural University, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan 430070, P.R. China
| | - Wei-Min Wang
- College of Fisheries Huazhong Agricultural University, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan 430070, P.R. China
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183
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Murphy MP, Hartley RC. Mitochondria as a therapeutic target for common pathologies. Nat Rev Drug Discov 2018; 17:865-886. [PMID: 30393373 DOI: 10.1038/nrd.2018.174] [Citation(s) in RCA: 475] [Impact Index Per Article: 79.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Although the development of mitochondrial therapies has largely focused on diseases caused by mutations in mitochondrial DNA or in nuclear genes encoding mitochondrial proteins, it has been found that mitochondrial dysfunction also contributes to the pathology of many common disorders, including neurodegeneration, metabolic disease, heart failure, ischaemia-reperfusion injury and protozoal infections. Mitochondria therefore represent an important drug target for these highly prevalent diseases. Several strategies aimed at therapeutically restoring mitochondrial function are emerging, and a small number of agents have entered clinical trials. This Review discusses the opportunities and challenges faced for the further development of mitochondrial pharmacology for common pathologies.
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Affiliation(s)
- Michael P Murphy
- Medical Research Council (MRC) Mitochondrial Biology Unit, University of Cambridge, Cambridge, UK
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184
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Sayiner M, Lam B, Golabi P, Younossi ZM. Advances and challenges in the management of advanced fibrosis in nonalcoholic steatohepatitis. Therap Adv Gastroenterol 2018; 11:1756284818811508. [PMID: 30479664 PMCID: PMC6243399 DOI: 10.1177/1756284818811508] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 10/16/2018] [Indexed: 02/04/2023] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) is rapidly becoming the most common type of chronic liver disease worldwide. From the spectrum of NAFLD, it is nonalcoholic steatohepatitis (NASH) that predominantly predisposes patients to higher risk for development of cirrhosis and hepatocellular carcinoma. There is growing evidence that the risk of progression to cirrhosis and hepatocellular carcinoma is not uniform among all patients with NASH. In fact, NASH patients with increasing numbers of metabolic diseases such as diabetes, hypertension, visceral obesity and dyslipidemia are at a higher risk of mortality. Additionally, patients with higher stage of liver fibrosis are also at increased risk of mortality. In this context, NASH patients with fibrosis are in the most urgent need of treatment. Also, the first line of treatment for NASH is lifestyle modification with diet and exercise. Nevertheless, the efficacy of lifestyle modification is quite limited. Additionally, vitamin E and pioglitazone may be considered for subset of patients with NASH. There are various medications targeting one or more steps in the pathogenesis of NASH being developed. These drug regimens either alone or in combination, may provide potential treatment option for patients with NASH.
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Affiliation(s)
- Mehmet Sayiner
- Department of Medicine, Inova Fairfax Hospital, Falls Church, VA,Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA
| | - Brian Lam
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA
| | - Pegah Golabi
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA
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185
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Wang B, Li W, Fang H, Zhou H. Hepatitis B virus infection is not associated with fatty liver disease: Evidence from a cohort study and functional analysis. Mol Med Rep 2018; 19:320-326. [PMID: 30387826 PMCID: PMC6297757 DOI: 10.3892/mmr.2018.9619] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 10/01/2018] [Indexed: 12/11/2022] Open
Abstract
Chronic hepatitis B virus (HBV) infection has been reported to be associated with the prevalence of non-alcoholic fatty liver disease (NAFLD). However, the present study demonstrated that the incidence of fatty liver disease in HBV-infected subjects (16/152, 10.5%) was not significantly different from in non-HBV-infected subjects (292/1,714, 17%), following adjustment for age (odds ratio=0.656; 95% confidence interval=0.379–1.134; P=0.131). Hepatitis B protein X (HBx) is considered a key regulator in HBV infection and several studies have confirmed that HBx serves a pivotal role in the process of fatty liver disease. In the present study, it was demonstrated that HBx-expressing cells exhibited increased mitochondrial membrane potential, ATP generation, and endogenous mitochondrial respiration. In addition, higher levels of mitochondrial reactive oxygen species (ROS) were detected in HBx-expressing cells compared with in control cells. Increased ROS production may contribute to increased lipid droplet formation in HBx-expressing cells, whereas the removal of ROS with N-acetylcysteine may decrease the accumulation of lipid droplets in a time-dependent manner. In conclusion, the present findings indicated that HBV, and perhaps more specifically HBx, was not a protective factor against NAFLD. HBx may function as a risk factor for fatty liver disease, based on the findings of the present functional study; however, further studies are required to clarify the effects of HBx on hepatic steatosis.
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Affiliation(s)
- Bingqian Wang
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, College of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Wenna Li
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, College of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Hezhi Fang
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, College of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Huaibin Zhou
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, College of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
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186
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Gjorgjieva M, Calderaro J, Monteillet L, Silva M, Raffin M, Brevet M, Romestaing C, Roussel D, Zucman-Rossi J, Mithieux G, Rajas F. Dietary exacerbation of metabolic stress leads to accelerated hepatic carcinogenesis in glycogen storage disease type Ia. J Hepatol 2018; 69:1074-1087. [PMID: 30193922 DOI: 10.1016/j.jhep.2018.07.017] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 06/11/2018] [Accepted: 07/08/2018] [Indexed: 12/18/2022]
Abstract
BACKGROUND & AIMS Glycogen storage disease type Ia (GSDIa) is a rare genetic disease associated with glycogen accumulation in hepatocytes and steatosis. With age, most adult patients with GSDIa develop hepatocellular adenomas (HCA), which can progress to hepatocellular carcinomas (HCC). In this study, we characterized metabolic reprogramming and cellular defense alterations during tumorigenesis in the liver of hepatocyte-specific G6pc deficient (L.G6pc-/-) mice, which develop all the hepatic hallmarks of GSDIa. METHODS Liver metabolism and cellular defenses were assessed at pretumoral (four months) and tumoral (nine months) stages in L.G6pc-/- mice fed a high fat/high sucrose (HF/HS) diet. RESULTS In response to HF/HS diet, hepatocarcinogenesis was highly accelerated since 85% of L.G6pc-/- mice developed multiple hepatic tumors after nine months, with 70% classified as HCA and 30% as HCC. Tumor development was associated with high expression of malignancy markers of HCC, i.e. alpha-fetoprotein, glypican 3 and β-catenin. In addition, L.G6pc-/- livers exhibited loss of tumor suppressors. Interestingly, L.G6pc-/- steatosis exhibited a low-inflammatory state and was less pronounced than in wild-type livers. This was associated with an absence of epithelial-mesenchymal transition and fibrosis, while HCA/HCC showed a partial epithelial-mesenchymal transition in the absence of TGF-β1 increase. In HCA/HCC, glycolysis was characterized by a marked expression of PK-M2, decreased mitochondrial OXPHOS and a decrease of pyruvate entry in the mitochondria, confirming a "Warburg-like" phenotype. These metabolic alterations led to a decrease in antioxidant defenses and autophagy and chronic endoplasmic reticulum stress in L.G6pc-/- livers and tumors. Interestingly, autophagy was reactivated in HCA/HCC. CONCLUSION The metabolic remodeling in L.G6pc-/- liver generates a preneoplastic status and leads to a loss of cellular defenses and tumor suppressors that facilitates tumor development in GSDI. LAY SUMMARY Glycogen storage disease type Ia (GSD1a) is a rare metabolic disease characterized by hypoglycemia, steatosis, excessive glycogen accumulation and tumor development in the liver. In this study, we have observed that GSDIa livers reprogram their metabolism in a similar way to cancer cells, which facilitates tumor formation and progression, in the absence of hepatic fibrosis. Moreover, hepatic burden due to overload of glycogen and lipids in the cells leads to a decrease in cellular defenses, such as autophagy, which could further promote tumorigenesis in the case of GSDI.
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Affiliation(s)
- Monika Gjorgjieva
- Institut National de la Santé et de la Recherche Médicale, U1213, Lyon F-69008, France; Université de Lyon, Lyon F-69008 France; Université Lyon I, Villeurbanne F-69622 France
| | - Julien Calderaro
- Inserm UMR-1162, Université Paris Descartes, Université Paris Diderot, Université Paris 13, Labex Immuno-Oncology, Paris, France; Université Paris Est Créteil, Créteil, France; APHP, Assistance-Publique Hôpitaux-de-Paris, Département de Pathologie, Hôpital Henri Mondor, Créteil F-94010, France
| | - Laure Monteillet
- Institut National de la Santé et de la Recherche Médicale, U1213, Lyon F-69008, France; Université de Lyon, Lyon F-69008 France; Université Lyon I, Villeurbanne F-69622 France
| | - Marine Silva
- Institut National de la Santé et de la Recherche Médicale, U1213, Lyon F-69008, France; Université de Lyon, Lyon F-69008 France; Université Lyon I, Villeurbanne F-69622 France
| | - Margaux Raffin
- Institut National de la Santé et de la Recherche Médicale, U1213, Lyon F-69008, France; Université de Lyon, Lyon F-69008 France; Université Lyon I, Villeurbanne F-69622 France
| | - Marie Brevet
- Université de Lyon, Lyon F-69008 France; Université Lyon I, Villeurbanne F-69622 France; Service de Pathologie Lyon Est, Centre hospitalier universitaire de Lyon, Lyon F-69437, France
| | - Caroline Romestaing
- Université de Lyon, Lyon F-69008 France; Université Lyon I, Villeurbanne F-69622 France; Centre National de la Recherche Scientifique, UMR 5023, Villeurbanne F-69622 France
| | - Damien Roussel
- Université de Lyon, Lyon F-69008 France; Université Lyon I, Villeurbanne F-69622 France; Centre National de la Recherche Scientifique, UMR 5023, Villeurbanne F-69622 France
| | - Jessica Zucman-Rossi
- Inserm UMR-1162, Université Paris Descartes, Université Paris Diderot, Université Paris 13, Labex Immuno-Oncology, Paris, France; Hôpital Européen Georges Pompidou, AP-HP, Assistance Publique-Hôpitaux de Paris, Paris F-75015, France
| | - Gilles Mithieux
- Institut National de la Santé et de la Recherche Médicale, U1213, Lyon F-69008, France; Université de Lyon, Lyon F-69008 France; Université Lyon I, Villeurbanne F-69622 France
| | - Fabienne Rajas
- Institut National de la Santé et de la Recherche Médicale, U1213, Lyon F-69008, France; Université de Lyon, Lyon F-69008 France; Université Lyon I, Villeurbanne F-69622 France.
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Bessone F, Dirchwolf M, Rodil MA, Razori MV, Roma MG. Review article: drug-induced liver injury in the context of nonalcoholic fatty liver disease - a physiopathological and clinical integrated view. Aliment Pharmacol Ther 2018; 48:892-913. [PMID: 30194708 DOI: 10.1111/apt.14952] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 03/25/2018] [Accepted: 07/30/2018] [Indexed: 12/15/2022]
Abstract
BACKGROUND Nonalcoholic fatty disease (NAFLD) is the most common liver disease, since it is strongly associated with obesity and metabolic syndrome pandemics. NAFLD may affect drug disposal and has common pathophysiological mechanisms with drug-induced liver injury (DILI); this may predispose to hepatoxicity induced by certain drugs that share these pathophysiological mechanisms. In addition, drugs may trigger fatty liver and inflammation per se by mimicking NAFLD pathophysiological mechanisms. AIMS To provide a comprehensive update on (a) potential mechanisms whereby certain drugs can be more hepatotoxic in NAFLD patients, (b) the steatogenic effects of drugs, and (c) the mechanism involved in drug-induced steatohepatitis (DISH). METHODS A language- and date-unrestricted Medline literature search was conducted to identify pertinent basic and clinical studies on the topic. RESULTS Drugs can induce macrovesicular steatosis by mimicking NAFLD pathogenic factors, including insulin resistance and imbalance between fat gain and loss. Other forms of hepatic fat accumulation exist, such as microvesicular steatosis and phospholipidosis, and are mostly associated with acute mitochondrial dysfunction and defective lipophagy, respectively. Drug-induced mitochondrial dysfunction is also commonly involved in DISH. Patients with pre-existing NAFLD may be at higher risk of DILI induced by certain drugs, and polypharmacy in obese individuals to treat their comorbidities may be a contributing factor. CONCLUSIONS The relationship between DILI and NAFLD may be reciprocal: drugs can cause NAFLD by acting as steatogenic factors, and pre-existing NAFLD could be a predisposing condition for certain drugs to cause DILI. Polypharmacy associated with obesity might potentiate the association between this condition and DILI.
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Affiliation(s)
- Fernando Bessone
- Hospital Provincial del Centenario, Facultad de Ciencias Médicas, Servicio de Gastroenterología y Hepatología, Universidad Nacional de Rosario, Rosario, Argentina
| | - Melisa Dirchwolf
- Unidad de Transplante Hepático, Servicio de Hepatología, Hospital Privado de Rosario, Rosario, Argentina
| | - María Agustina Rodil
- Hospital Provincial del Centenario, Facultad de Ciencias Médicas, Servicio de Gastroenterología y Hepatología, Universidad Nacional de Rosario, Rosario, Argentina
| | - María Valeria Razori
- Instituto de Fisiología Experimental (IFISE-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Argentina
| | - Marcelo G Roma
- Instituto de Fisiología Experimental (IFISE-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Argentina
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188
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Ampawong S, Isarangkul D, Reamtong O, Aramwit P. Adaptive effect of sericin on hepatic mitochondrial conformation through its regulation of apoptosis, autophagy and energy maintenance: a proteomics approach. Sci Rep 2018; 8:14943. [PMID: 30297713 PMCID: PMC6175853 DOI: 10.1038/s41598-018-33372-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 09/27/2018] [Indexed: 12/22/2022] Open
Abstract
We recently demonstrated that in addition to its protective effect on pancreatic and adrenal biosynthesis, antioxidant properties of sericin decrease blood cholesterol levels and improve the liver mitochondrial architecture. However, little is known about the detailed mechanisms underlying these effects. Using proteomics and electron microscopy, we identified mitochondrial proteins that play important roles in the preservation of the mitochondrial ultrastructure and cholesterol-lowering properties of sericin. Our results showed that sericin maintains the mitochondrial architecture during conditions of high blood cholesterol by regulating apoptotic (NADH-ubiquinone oxidoreductase 75 kDa subunit) and autophagic (mitochondrial elongation factor Tu and prohibitin-2) proteins as well as energy maintenance proteins [haloacid dehalogenase-like hydrolase domain-containing protein 3, succinate dehydrogenase (ubiquinone) flavoprotein subunit, ATP synthase-α subunit precursor, enoyl-CoA hydratase domain-containing protein 3 and electron transfer flavoprotein subunit-α]. Sericin also exerts anti-oxidative properties via aconitate hydratase and Chain A, crystal structure of rat carnitine palmitoyltrasferase 2 proteins. Together, these activities may reduce hepatocytic triglyceride deposition, thereby decreasing steatosis, as demonstrated by the modulatory effects on ornithine aminotransferase, mitochondrial aspartate aminotransferase, acyl-CoA synthase, hydroxyacyl-CoA dehydrogenase and D-beta-hydroxybutyrate dehydrogenase. Sericin activity further balanced nitrogenous waste detoxification, characterised by carbamoyl-phosphate synthase (ammonia), aldehyde dehydrogenase and uricase, or folate biosynthesis via sarcosine dehydrogenase and dimethyl glycine dehydrogenase. These results suggest that sericin maintains the hepatic mitochondrial architecture through apoptotic, autophagic, energy maintenance and anti-oxidative mitochondrial proteins for alleviating hepatic steatosis and promoting liver function under conditions of hypercholesterolaemia.
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Affiliation(s)
- Sumate Ampawong
- Department of Tropical Pathology, Faculty of Tropical Medicine, Mahidol University, Ratchawithi Road, Ratchathewi, Bangkok, 10400, Thailand
| | - Duangnate Isarangkul
- Department of Microbiology, Faculty of Science, Mahidol University, 272, Rama VI Road, Ratchathewi, Bangkok, 10400, Thailand
| | - Onrapak Reamtong
- Department of Molecular Tropical Medicine and Genetic, Faculty of Tropical Medicine, Mahidol University, Ratchawithi Road, Ratchathewi, Bangkok, 10400, Thailand
| | - Pornanong Aramwit
- Bioactive Resources for Innovative Clinical Applications Research Unit and Department of Pharmacy Practice, Faculty of Pharmaceutical Sciences, Chulalongkorn University, PhayaThai Road, Phatumwan, Bangkok, 10330, Thailand.
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189
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Cruces-Sande M, Vila-Bedmar R, Arcones AC, González-Rodríguez Á, Rada P, Gutiérrez-de-Juan V, Vargas-Castrillón J, Iruzubieta P, Sánchez-González C, Formentini L, Crespo J, García-Monzón C, Martínez-Chantar ML, Valverde ÁM, Mayor F, Murga C. Involvement of G protein-coupled receptor kinase 2 (GRK2) in the development of non-alcoholic steatosis and steatohepatitis in mice and humans. Biochim Biophys Acta Mol Basis Dis 2018; 1864:3655-3667. [PMID: 30261289 DOI: 10.1016/j.bbadis.2018.09.027] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 09/17/2018] [Accepted: 09/19/2018] [Indexed: 01/04/2023]
Abstract
Insulin resistance (IR) and obesity are important risk factors for non-alcoholic fatty liver disease (NAFLD). G protein-coupled receptor kinase 2 (GRK2) is involved in the development of IR and obesity in vivo. However, its possible contribution to NAFLD and/or non-alcoholic steatohepatitis (NASH) independently of its role on IR or fat mass accretion has not been explored. Here, we used wild-type (WT) or GRK2 hemizygous (GRK2±) mice fed a high-fat diet (HFD) or a methionine and choline-deficient diet (MCD) as a model of NASH independent of adiposity and IR. GRK2± mice were protected from HFD-induced NAFLD. Moreover, MCD feeding caused an increased in triglyceride content and liver-to-body weight ratio in WT mice, features that were attenuated in GRK2± mice. According to their NAFLD activity score, MCD-fed GRK2± mice were diagnosed with simple steatosis and not overt NASH. They also showed reduced expression of lipogenic and lipid-uptake markers and less signs of inflammation in the liver. GRK2± mice preserved hepatic protective mechanisms as enhanced autophagy and mitochondrial fusion and biogenesis, together with reduced endoplasmic reticulum stress. GRK2 protein was increased in MCD-fed WT but not in GRK2± mice, and enhanced GRK2 expression potentiated palmitic acid-triggered lipid accumulation in human hepatocytes directly relating GRK2 levels to steatosis. GRK2 protein and mRNA levels were increased in human liver biopsies from simple steatosis or NASH patients in two different human cohorts. Our results describe a functional relationship between GRK2 levels and hepatic lipid accumulation and implicate GRK2 in the establishment and/or development of NASH.
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Affiliation(s)
- Marta Cruces-Sande
- Departamento de Biología Molecular and Centro de Biología Molecular Severo Ochoa (UAM-CSIC), Madrid, Spain; Instituto de Investigación Sanitaria La Princesa, Madrid, Spain; CIBER de Enfermedades Cardiovasculares, ISCIII (CIBERCV), Madrid, Spain
| | - Rocío Vila-Bedmar
- Departamento de Biología Molecular and Centro de Biología Molecular Severo Ochoa (UAM-CSIC), Madrid, Spain; Instituto de Investigación Sanitaria La Princesa, Madrid, Spain; CIBER de Enfermedades Cardiovasculares, ISCIII (CIBERCV), Madrid, Spain
| | - Alba C Arcones
- Departamento de Biología Molecular and Centro de Biología Molecular Severo Ochoa (UAM-CSIC), Madrid, Spain; Instituto de Investigación Sanitaria La Princesa, Madrid, Spain; CIBER de Enfermedades Cardiovasculares, ISCIII (CIBERCV), Madrid, Spain
| | - Águeda González-Rodríguez
- Instituto de Investigación Sanitaria La Princesa, Madrid, Spain; Unidad de Investigación, Hospital Universitario Santa Cristina, Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), ISCIII, Spain
| | - Patricia Rada
- Instituto de Investigaciones Biomédicas 'Alberto Sols' (CSIC/UAM), Madrid, Spain; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), ISCIII, Spain
| | - Virginia Gutiérrez-de-Juan
- Center for Cooperative Research in Bioscience (CIC bioGUNE), Liver Disease Lab, Derio, Bizkaia, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), ISCIII, Spain
| | - Javier Vargas-Castrillón
- Instituto de Investigación Sanitaria La Princesa, Madrid, Spain; Unidad de Investigación, Hospital Universitario Santa Cristina, Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), ISCIII, Spain
| | - Paula Iruzubieta
- Department of Gastroenterology and Hepatology, Marqués de Valdecilla University Hospital, Infection, Immunity and Digestive Pathology Group, Research Institute Marqués de Valdecilla (IDIVAL), Santander, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), ISCIII, Spain
| | - Cristina Sánchez-González
- Departamento de Biología Molecular and Centro de Biología Molecular Severo Ochoa (UAM-CSIC), Madrid, Spain; CIBER de Enfermedades Raras (CIBERER), ISCIII, Spain
| | - Laura Formentini
- Departamento de Biología Molecular and Centro de Biología Molecular Severo Ochoa (UAM-CSIC), Madrid, Spain; CIBER de Enfermedades Raras (CIBERER), ISCIII, Spain
| | - Javier Crespo
- Department of Gastroenterology and Hepatology, Marqués de Valdecilla University Hospital, Infection, Immunity and Digestive Pathology Group, Research Institute Marqués de Valdecilla (IDIVAL), Santander, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), ISCIII, Spain
| | - Carmelo García-Monzón
- Instituto de Investigación Sanitaria La Princesa, Madrid, Spain; Unidad de Investigación, Hospital Universitario Santa Cristina, Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), ISCIII, Spain
| | - María L Martínez-Chantar
- Center for Cooperative Research in Bioscience (CIC bioGUNE), Liver Disease Lab, Derio, Bizkaia, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), ISCIII, Spain
| | - Ángela M Valverde
- Instituto de Investigaciones Biomédicas 'Alberto Sols' (CSIC/UAM), Madrid, Spain; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), ISCIII, Spain
| | - Federico Mayor
- Departamento de Biología Molecular and Centro de Biología Molecular Severo Ochoa (UAM-CSIC), Madrid, Spain; Instituto de Investigación Sanitaria La Princesa, Madrid, Spain; CIBER de Enfermedades Cardiovasculares, ISCIII (CIBERCV), Madrid, Spain.
| | - Cristina Murga
- Departamento de Biología Molecular and Centro de Biología Molecular Severo Ochoa (UAM-CSIC), Madrid, Spain; Instituto de Investigación Sanitaria La Princesa, Madrid, Spain; CIBER de Enfermedades Cardiovasculares, ISCIII (CIBERCV), Madrid, Spain.
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190
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Ipsen DH, Lykkesfeldt J, Tveden-Nyborg P. Molecular mechanisms of hepatic lipid accumulation in non-alcoholic fatty liver disease. Cell Mol Life Sci 2018; 75:3313-3327. [PMID: 29936596 PMCID: PMC6105174 DOI: 10.1007/s00018-018-2860-6] [Citation(s) in RCA: 786] [Impact Index Per Article: 131.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 06/18/2018] [Accepted: 06/20/2018] [Indexed: 12/17/2022]
Abstract
Non-alcoholic fatty liver disease (NAFLD) is currently the world's most common liver disease, estimated to affect up to one-fourth of the population. Hallmarked by hepatic steatosis, NAFLD is associated with a multitude of detrimental effects and increased mortality. This narrative review investigates the molecular mechanisms of hepatic steatosis in NAFLD, focusing on the four major pathways contributing to lipid homeostasis in the liver. Hepatic steatosis is a consequence of lipid acquisition exceeding lipid disposal, i.e., the uptake of fatty acids and de novo lipogenesis surpassing fatty acid oxidation and export. In NAFLD, hepatic uptake and de novo lipogenesis are increased, while a compensatory enhancement of fatty acid oxidation is insufficient in normalizing lipid levels and may even promote cellular damage and disease progression by inducing oxidative stress, especially with compromised mitochondrial function and increased oxidation in peroxisomes and cytochromes. While lipid export initially increases, it plateaus and may even decrease with disease progression, sustaining the accumulation of lipids. Fueled by lipo-apoptosis, hepatic steatosis leads to systemic metabolic disarray that adversely affects multiple organs, placing abnormal lipid metabolism associated with NAFLD in close relation to many of the current life-style-related diseases.
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Affiliation(s)
- David Højland Ipsen
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Ridebanevej 9, 1870, Frederiksberg C, Denmark
| | - Jens Lykkesfeldt
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Ridebanevej 9, 1870, Frederiksberg C, Denmark
| | - Pernille Tveden-Nyborg
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Ridebanevej 9, 1870, Frederiksberg C, Denmark.
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191
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Mogalli R, Matsukawa T, Shimomura O, Isoda H, Ohkohchi N. Cyanidin-3-glucoside enhances mitochondrial function and biogenesis in a human hepatocyte cell line. Cytotechnology 2018; 70:1519-1528. [PMID: 30155610 PMCID: PMC6269359 DOI: 10.1007/s10616-018-0242-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 07/24/2018] [Indexed: 02/06/2023] Open
Abstract
Mitochondrial dysfunction has been identified as one of the primary factors contributing to liver diseases. Pathways that control mitochondrial biogenesis are potential therapeutic targets for the amelioration of hepatocyte dysfunction and liver disease. Research on natural pharmacological agents that ameliorate liver diseases has intensified over the last two decades. Cyanidin-3-glucoside (Cy3g), a dietary flavonoid compound extracted from a wide variety of fruits and vegetables, reportedly has several beneficial health effects. In this study, we used an adult human hepatoma cell line (HuH7) to investigate the effects of the Cy3g polyphenolic compound on mitochondrial function and biogenesis in vitro. An increase in intracellular mitochondrial reductase levels was observed after treatment with Cy3g, but cytotoxicity was not induced. In addition, mitochondrial membrane potential and ATP production were increased following Cy3g treatment. Cy3g treatment also resulted in a dose- and time-dependent upregulation of the gene expression of peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α), a transcription factor considered a master regulator of mitochondrial biogenesis and metabolism. Additionally, the expression of sirtuin 1 (SIRT1), which plays a key role in deacetylating PGC-1α, was also increased in a dose- and time-dependent manner. Cy3g treatment also increased the expression of downstream PGC-1α genes, nuclear respiratory factor 1 and mitochondrial transcription factor A (TFAM). Our results suggest that Cy3g has potential as a hepatoprotective therapeutic agent that enhances mitochondrial function and biogenesis in hepatocytes.
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Affiliation(s)
- Rashad Mogalli
- Department of Surgery and Organ Transplantation, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, 305-8575, Japan
| | - Toshiya Matsukawa
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8572, Japan
| | - Osamu Shimomura
- Department of Surgery and Organ Transplantation, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, 305-8575, Japan
| | - Hiroko Isoda
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8572, Japan
- Alliance for Research on North Africa (ARENA), University of Tsukuba, Tsukuba, Ibaraki, 305-8572, Japan
| | - Nobuhiro Ohkohchi
- Department of Surgery and Organ Transplantation, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, 305-8575, Japan.
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192
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Balampanis K, Chasapi A, Kourea E, Tanoglidi A, Hatziagelaki E, Lambadiari V, Dimitriadis G, Lambrou GI, Kalfarentzos F, Melachrinou M, Sotiropoulou-Bonikou G. Inter-tissue expression patterns of the key metabolic biomarker PGC-1α in severely obese individuals: Implication in obesity-induced disease. Hellenic J Cardiol 2018; 60:282-293. [PMID: 30138744 DOI: 10.1016/j.hjc.2018.08.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 07/29/2018] [Accepted: 08/03/2018] [Indexed: 12/25/2022] Open
Abstract
OBJECTIVE PGC-1α is already known as a significant regulator of mitochondrial biogenesis, oxidative phosphorylation and fatty acid metabolism. Our study focuses on the role of PGC1α in morbid obesity, in five different tissues, collected from 50 severely obese patients during planned bariatric surgery. METHODS The investigated tissues included subcutaneous adipose tissue (SAT), visceral adipose tissue (VAT), skeletal muscle (SM), extramyocellular adipose tissue (EMAT) and liver. PGC1α expression was investigated with immunohistochemistry and evaluated with microscopy. RESULTS Our findings highlighted significant positive inter-tissue correlations regarding PGC-1α expression between several tissue pairs (VAT-SAT, VAT-SM, VAT-EMAT, SAT-SM, SAT-EMAT, SM-EMAT). Moreover, we found significant negative correlations between PGC1α expression in VAT with CD68 expression in skeletal muscle and EMAT, implying a possible protective role of PGC1α against obesity-induced inflammation. CONCLUSION Unmasking the inter-tissue communication networks regarding PGC-1α expression in morbid obesity, will give more insight into its significant role in obesity-induced diseases. PGC1α could potentially represent a future preventive and therapeutic target against obesity-induced disease, probably through enhancing mitochondrial biogenesis and metabolism.
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Affiliation(s)
- Konstantinos Balampanis
- Department of Pathology, Medical School, University of Patras, 26500 Patras, Greece; Second Department of Internal Medicine, Research Unit and Diabetes Center, Attikon University Hospital, National and Kapodistrian University of Athens, Medical School, Rimini 1, Haidari, 12462 Athens, Greece.
| | - Athina Chasapi
- Department of Pathology, Medical School, University of Patras, 26500 Patras, Greece.
| | - Eleni Kourea
- Department of Pathology, Medical School, University of Patras, 26500 Patras, Greece.
| | - Anna Tanoglidi
- Department of Clinical Pathology, Akademiska University, Uppsala, Sweden.
| | - Erifili Hatziagelaki
- Second Department of Internal Medicine, Research Unit and Diabetes Center, Attikon University Hospital, National and Kapodistrian University of Athens, Medical School, Rimini 1, Haidari, 12462 Athens, Greece.
| | - Vaia Lambadiari
- Second Department of Internal Medicine, Research Unit and Diabetes Center, Attikon University Hospital, National and Kapodistrian University of Athens, Medical School, Rimini 1, Haidari, 12462 Athens, Greece.
| | - George Dimitriadis
- Second Department of Internal Medicine, Research Unit and Diabetes Center, Attikon University Hospital, National and Kapodistrian University of Athens, Medical School, Rimini 1, Haidari, 12462 Athens, Greece.
| | - George I Lambrou
- First Department of Pediatrics, Choremeio Research Laboratory, National and Kapodistrian University of Athens, Medical School, Thivon & Levadeias 8, Goudi, 11527 Athens, Greece.
| | - Fotios Kalfarentzos
- Department of Surgery, Medical School, University of Patras, 26500 Patras, Greece.
| | - Maria Melachrinou
- Department of Pathology, Medical School, University of Patras, 26500 Patras, Greece.
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193
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Zhang Q, Lou Y, Bai XL, Liang TB. Immunometabolism: A novel perspective of liver cancer microenvironment and its influence on tumor progression. World J Gastroenterol 2018; 24:3500-3512. [PMID: 30131656 PMCID: PMC6102497 DOI: 10.3748/wjg.v24.i31.3500] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Revised: 05/29/2018] [Accepted: 06/27/2018] [Indexed: 02/06/2023] Open
Abstract
The initiation and progression of liver cancer, including hepatocellular carcinoma and intrahepatic cholangiocarcinoma, are dependent on its tumor microenvironment. Immune cells are key players in the liver cancer microenvironment and show complicated crosstalk with cancer cells. Emerging evidence has shown that the functions of immune cells are closely related to cell metabolism. However, the effects of metabolic changes of immune cells on liver cancer progression are largely undefined. In this review, we summarize the recent findings of immunometabolism and relate these findings to liver cancer progression. We also explore the translation of the understanding of immunometabolism for clinical use.
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Affiliation(s)
- Qi Zhang
- Department of Hepatobiliary and Pancreatic Surgery, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, Zhejiang Province, China
- Zhejiang Provincial Key Laboratory of Pancreatic Disease, Hangzhou 310009, Zhejiang Province, China
| | - Yu Lou
- Department of Hepatobiliary and Pancreatic Surgery, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, Zhejiang Province, China
- Zhejiang Provincial Key Laboratory of Pancreatic Disease, Hangzhou 310009, Zhejiang Province, China
| | - Xue-Li Bai
- Department of Hepatobiliary and Pancreatic Surgery, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, Zhejiang Province, China
- Zhejiang Provincial Key Laboratory of Pancreatic Disease, Hangzhou 310009, Zhejiang Province, China
| | - Ting-Bo Liang
- Department of Hepatobiliary and Pancreatic Surgery, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, Zhejiang Province, China
- Zhejiang Provincial Key Laboratory of Pancreatic Disease, Hangzhou 310009, Zhejiang Province, China
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194
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Kim SH, Kim H. Inhibitory Effect of Astaxanthin on Oxidative Stress-Induced Mitochondrial Dysfunction-A Mini-Review. Nutrients 2018; 10:nu10091137. [PMID: 30134611 PMCID: PMC6165470 DOI: 10.3390/nu10091137] [Citation(s) in RCA: 141] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 08/13/2018] [Accepted: 08/18/2018] [Indexed: 12/22/2022] Open
Abstract
Oxidative stress is a major contributor to the pathogenesis of various human diseases as well as to the aging process. Mitochondria, as the center of cellular metabolism and major regulators of redox balance, play a critical role in disease development and progression. Mitochondrial dysfunction involving structural and metabolic impairment is prominent in oxidative stress-related diseases. Increased oxidative stress can damage mitochondria, and subsequent mitochondrial dysfunction generates excesses of mitochondrial reactive oxygen species that cause cellular damage. Mitochondrial dysfunction also activates the mitochondrial apoptotic pathway, resulting in cellular death. Astaxanthin, a red-colored xanthophyll carotenoid, exerts an anti-oxidative and anti-inflammatory effect on various cell lines. In this manner astaxanthin maintains mitochondrial integrity under various pathological conditions. In this review, the inhibitory effects of astaxanthin on oxidative stress-induced mitochondrial dysfunction and related disease development are discussed.
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Affiliation(s)
- Suhn Hyung Kim
- Department of Food and Nutrition, Brain Korea 21 PLUS Project, College of Human Ecology, Yonsei University, Seoul 03722, Korea.
| | - Hyeyoung Kim
- Department of Food and Nutrition, Brain Korea 21 PLUS Project, College of Human Ecology, Yonsei University, Seoul 03722, Korea.
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195
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Sakai T, Ohba H, Nishiyama S, Kakiuchi T, Inoue O, Tsukada H. Sensitive and early detection of mitochondrial dysfunction in the liver of NASH model mice by PET imaging with 18F-BCPP-BF. EJNMMI Res 2018; 8:61. [PMID: 30014266 PMCID: PMC6047947 DOI: 10.1186/s13550-018-0420-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 06/29/2018] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Nonalcoholic fatty liver disease is a common disorder that progresses from simple fatty liver (steatosis) to nonalcoholic steatohepatitis (NASH). It is thought that mitochondrial dysfunction plays a critical role in the progression of NASH. In this study, we developed a non-invasive method for early diagnosis and staging of NASH that directly measures mitochondrial complex-I (MC-I) activity in the liver of NASH model mice by positron emission tomography (PET) imaging using the novel tracer 2-tert-butyl-4-chloro-5-[6-(4-[18F]fluorobutoxy)-pyridin-3-ylmethoxy]-2H-pyridazin-3-one (18F-BCPP-BF). Liver uptake of 18F-BCPP-BF in NASH and age-matched control mice was measured as a standard uptake value over a period of 1 to 12 weeks. Histopathological evaluation of the liver tissue was performed by haematoxylin and eosin staining, and fibrosis was assessed by Masson's trichrome staining. RESULTS Significant mitochondrial dysfunction was detected as early as 1 week after commencing the diet, and MC-I activity in the liver measured by PET was reduced by > 50% relative to that in age-matched control mice after 6 weeks. Liver uptake of 18F-BCPP-BF was low throughout the 12-week experimental period. Histopathological examination revealed that steatosis, inflammation, and ballooning progressed from 1 to 6 weeks, with fibrosis observed from 6 to 12 weeks. CONCLUSIONS PET scans and histopathological analysis revealed that mitochondrial dysfunction in the liver contributed to the progression of NASH. PET imaging with 18F-BCPP-BF is a useful tool for detecting NASH at early stages and for monitoring therapeutic response.
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Affiliation(s)
- Toshihiro Sakai
- Hot Laboratory, Hanwa Intelligent Medical Center, Hanwa Daini Senboku Hospital, 3176 Fukai Kitamachi, Naka-ku, Sakai, Osaka, 599-8271, Japan.
| | - Hiroyuki Ohba
- Central Research Laboratory, Hamamatsu Photonics KK, 5000 Hirakuchi, Hamakita-ku, Hamamatsu, Sizuoka, 434-8601, Japan
| | - Shingo Nishiyama
- Central Research Laboratory, Hamamatsu Photonics KK, 5000 Hirakuchi, Hamakita-ku, Hamamatsu, Sizuoka, 434-8601, Japan
| | - Takeharu Kakiuchi
- Central Research Laboratory, Hamamatsu Photonics KK, 5000 Hirakuchi, Hamakita-ku, Hamamatsu, Sizuoka, 434-8601, Japan
| | - Osamu Inoue
- Hot Laboratory, Hanwa Intelligent Medical Center, Hanwa Daini Senboku Hospital, 3176 Fukai Kitamachi, Naka-ku, Sakai, Osaka, 599-8271, Japan
| | - Hideo Tsukada
- Central Research Laboratory, Hamamatsu Photonics KK, 5000 Hirakuchi, Hamakita-ku, Hamamatsu, Sizuoka, 434-8601, Japan
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196
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Dihingia A, Bordoloi J, Dutta P, Kalita J, Manna P. Hexane-Isopropanolic Extract of Tungrymbai, a North-East Indian fermented soybean food prevents hepatic steatosis via regulating AMPK-mediated SREBP/FAS/ACC/HMGCR and PPARα/CPT1A/UCP2 pathways. Sci Rep 2018; 8:10021. [PMID: 29968750 PMCID: PMC6030226 DOI: 10.1038/s41598-018-27607-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Accepted: 06/05/2018] [Indexed: 01/14/2023] Open
Abstract
This study for the first time examined the prophylactic role of Tungrymbai, a well-known fermented soybean food of North-East India, against hepatic steatosis. Treatment with hexane-isopropanolic (2:1, HIET) but not hydro-alcoholic (70% ethanol, HAET) extract dose-dependently (0.1, 0.2, or 0.3 µg/mL) reduced the intracellular lipid accumulation as shown by lower triglyceride levels and both Oil Red O and Nile Red staining in palmitate (PA, 0.75 mM)-treated hepatocytes. Immunobloting, mRNA expression, and knock-down studies demonstrated the role of AMPK-mediated SREBP/FAS/ACC/HMGCR and PPARα/CPT1A/UCP2 signaling pathways in facilitating the beneficial role of HIET against lipid accumulation in PA-treated hepatocytes. Animal studies further showed a positive effect of HIET (20 µg/kg BW, 8 weeks, daily) in regulating AMPK/SREBP/PPARα signaling pathways and reducing body weight gain, plasma lipid levels, and hepatic steatosis in high fat diet (HFD)-fed mice. Histological analyses also revealed the beneficial effect of HIET in reducing hepatic fat accumulation in HFD mice. Chemical profiling (HRMS, IR, and HPLC) demonstrated the presence of menaquinone-7 (vitamin K2) as one of the bio-active principle(s) in HIET. Combining all, this study demonstrates the positive effect of HIET on reducing hepatic steatosis via regulating AMPK/SREBP/PPARα signaling pathway.
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Affiliation(s)
- Anjum Dihingia
- Biological Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-NEIST Campus, Jorhat, Assam, India
| | - Jijnasa Bordoloi
- Biological Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-NEIST Campus, Jorhat, Assam, India
| | - Prachurjya Dutta
- Biological Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-NEIST Campus, Jorhat, Assam, India
| | - Jatin Kalita
- Biological Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-NEIST Campus, Jorhat, Assam, India
| | - Prasenjit Manna
- Biological Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam, India.
- Academy of Scientific and Innovative Research (AcSIR), CSIR-NEIST Campus, Jorhat, Assam, India.
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197
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García-Roche M, Casal A, Carriquiry M, Radi R, Quijano C, Cassina A. Respiratory analysis of coupled mitochondria in cryopreserved liver biopsies. Redox Biol 2018; 17:207-212. [PMID: 29704825 PMCID: PMC6006522 DOI: 10.1016/j.redox.2018.03.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 03/09/2018] [Accepted: 03/13/2018] [Indexed: 02/07/2023] Open
Abstract
The aim of this work was to develop a cryopreservation method of small liver biopsies for in situ mitochondrial function assessment. Herein we describe a detailed protocol for tissue collection, cryopreservation, high-resolution respirometry using complex I and II substrates, calculation and interpretation of respiratory parameters. Liver biopsies from cow and rat were sequentially frozen in a medium containing dimethylsulfoxide as cryoprotectant and stored for up to 3 months at -80 °C. Oxygen consumption rate studies of fresh and cryopreserved samples revealed that most respiratory parameters remained unchanged. Additionally, outer mitochondrial membrane integrity was assessed adding cytochrome c, proving that our cryopreservation method does not harm mitochondrial structure. In sum, we present a reliable way to cryopreserve small liver biopsies without affecting mitochondrial function. Our protocol will enable the transport and storage of samples, extending and facilitating mitochondrial function analysis of liver biopsies.
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Affiliation(s)
- Mercedes García-Roche
- Center for Free Radical and Biomedical Research (CEINBIO) and Departamento de Bioquímica, Facultad de Medicina, Universidad de la República, Uruguay; Departamento de Producción Animal y Pasturas, Facultad de Agronomía, Universidad de la República, Uruguay
| | - Alberto Casal
- Departamento de Producción Animal y Pasturas, Facultad de Agronomía, Universidad de la República, Uruguay
| | - Mariana Carriquiry
- Departamento de Producción Animal y Pasturas, Facultad de Agronomía, Universidad de la República, Uruguay
| | - Rafael Radi
- Center for Free Radical and Biomedical Research (CEINBIO) and Departamento de Bioquímica, Facultad de Medicina, Universidad de la República, Uruguay
| | - Celia Quijano
- Center for Free Radical and Biomedical Research (CEINBIO) and Departamento de Bioquímica, Facultad de Medicina, Universidad de la República, Uruguay.
| | - Adriana Cassina
- Center for Free Radical and Biomedical Research (CEINBIO) and Departamento de Bioquímica, Facultad de Medicina, Universidad de la República, Uruguay.
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198
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Wang X, Du H, Shao S, Bo T, Yu C, Chen W, Zhao L, Li Q, Wang L, Liu X, Su X, Sun M, Song Y, Gao L, Zhao J. Cyclophilin D deficiency attenuates mitochondrial perturbation and ameliorates hepatic steatosis. Hepatology 2018; 68:62-77. [PMID: 29356058 DOI: 10.1002/hep.29788] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 12/08/2017] [Accepted: 01/12/2018] [Indexed: 01/04/2023]
Abstract
Physiological opening of the mitochondrial permeability transition pore (mPTP) is indispensable for maintaining mitochondrial function and cell homeostasis, but the role of the mPTP and its initial factor, cyclophilin D (CypD), in hepatic steatosis is unclear. Here, we demonstrate that excess mPTP opening is mediated by an increase of CypD expression induced hepatic mitochondrial dysfunction. Notably, such mitochondrial perturbation occurred before detectable triglyceride accumulation in the liver of high-fat diet-fed mice. Moreover, either genetic knockout or pharmacological inhibition of CypD could ameliorate mitochondrial dysfunction, including excess mPTP opening and stress, and down-regulate the transcription of sterol regulatory element-binding protein-1c, a key factor of lipogenesis. In contrast, the hepatic steatosis in adenoviral overexpression of CypD-infected mice was aggravated relative to the control group. Blocking p38 mitogen-activated protein kinase or liver-specific Ire1α knockout could resist CypD-induced sterol regulatory element-binding protein-1c expression and steatosis. Importantly, CypD inhibitor applied prior to or after the onset of triglyceride deposition substantially prevented or ameliorated fatty liver. CONCLUSION CypD stimulates mPTP excessive opening, subsequently causing endoplasmic reticulum stress through p38 mitogen-activated protein kinase activation, and results in enhanced sterol regulatory element-binding protein-1c transcription and hepatic steatosis. (Hepatology 2018;68:62-77).
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Affiliation(s)
- Xiaolei Wang
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
- Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, China
- Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, China
| | - Heng Du
- Department of Biological Sciences, University of Texas at Dallas, Richardson, TX
| | - Shanshan Shao
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
- Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, China
- Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, China
| | - Tao Bo
- Scientific Center, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Chunxiao Yu
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
- Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, China
- Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, China
| | - Wenbin Chen
- Scientific Center, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Lifang Zhao
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
- Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, China
- Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, China
| | - Qiu Li
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
- Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, China
- Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, China
| | - Li Wang
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
- Department of Physiology and Neurobiology and the Institute for Systems Genomics, University of Connecticut, Storrs, CT
| | - Xiaojing Liu
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
- Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, China
- Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, China
| | - Xiaohui Su
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
- Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, China
- Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, China
| | - Mingqi Sun
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
- Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, China
- Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, China
| | - Yongfeng Song
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
- Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, China
- Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, China
| | - Ling Gao
- Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, China
- Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, China
- Scientific Center, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Jiajun Zhao
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
- Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, China
- Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, China
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199
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Jain MR, Giri SR, Bhoi B, Trivedi C, Rath A, Rathod R, Ranvir R, Kadam S, Patel H, Swain P, Roy SS, Das N, Karmakar E, Wahli W, Patel PR. Dual PPARα/γ agonist saroglitazar improves liver histopathology and biochemistry in experimental NASH models. Liver Int 2018; 38:1084-1094. [PMID: 29164820 PMCID: PMC6001453 DOI: 10.1111/liv.13634] [Citation(s) in RCA: 144] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 11/13/2017] [Indexed: 12/12/2022]
Abstract
BACKGROUND & AIMS Non-alcoholic fatty liver disease (NAFLD) and non-alcoholic steatohepatitis (NASH) are common clinico-pathological conditions that affect millions of patients worldwide. In this study, the efficacy of saroglitazar, a novel PPARα/γ agonist, was assessed in models of NAFLD/NASH. METHODS & RESULTS HepG2 cells treated with palmitic acid (PA;0.75 mM) showed decreased expression of various antioxidant biomarkers (SOD1, SOD2, glutathione peroxidase and catalase) and increased expression of inflammatory markers (TNFα, IL1β and IL6). These effects were blocked by saroglitazar, pioglitazone and fenofibrate (all tested at 10μM concentration). Furthermore, these agents reversed PA-mediated changes in mitochondrial dysfunction, ATP production, NFkB phosphorylation and stellate cell activation in HepG2 and HepG2-LX2 Coculture studies. In mice with choline-deficient high-fat diet-induced NASH, saroglitazar reduced hepatic steatosis, inflammation, ballooning and prevented development of fibrosis. It also reduced serum alanine aminotransferase, aspartate aminotransferase and expression of inflammatory and fibrosis biomarkers. In this model, the reduction in the overall NAFLD activity score by saroglitazar (3 mg/kg) was significantly more prominent than pioglitazone (25 mg/kg) and fenofibrate (100 mg/kg). Pioglitazone and fenofibrate did not show any improvement in steatosis, but partially improved inflammation and liver function. Antifibrotic effect of saroglitazar (4 mg/kg) was also observed in carbon tetrachloride-induced fibrosis model. CONCLUSIONS Saroglitazar, a dual PPARα/γ agonist with predominant PPARα activity, shows an overall improvement in NASH. The effects of saroglitazar appear better than pure PPARα agonist, fenofibrate and PPARγ agonist pioglitazone.
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Affiliation(s)
- Mukul R. Jain
- Zydus Research CentreCadila Healthcare LimitedAhmedabadGujaratIndia
| | - Suresh R. Giri
- Zydus Research CentreCadila Healthcare LimitedAhmedabadGujaratIndia
| | - Bibhuti Bhoi
- Zydus Research CentreCadila Healthcare LimitedAhmedabadGujaratIndia
| | - Chitrang Trivedi
- Zydus Research CentreCadila Healthcare LimitedAhmedabadGujaratIndia
| | - Akshyaya Rath
- Zydus Research CentreCadila Healthcare LimitedAhmedabadGujaratIndia
| | - Rohan Rathod
- Zydus Research CentreCadila Healthcare LimitedAhmedabadGujaratIndia
| | | | - Shekhar Kadam
- Zydus Research CentreCadila Healthcare LimitedAhmedabadGujaratIndia
| | - Hiren Patel
- Zydus Research CentreCadila Healthcare LimitedAhmedabadGujaratIndia
| | - Prabodha Swain
- Zydus Research CentreCadila Healthcare LimitedAhmedabadGujaratIndia
| | - Sib Sankar Roy
- Cell Biology and Physiology DivisionIndian Institute of Chemical BiologyKolkataIndia
| | - Nabanita Das
- Cell Biology and Physiology DivisionIndian Institute of Chemical BiologyKolkataIndia
| | - Eshani Karmakar
- Cell Biology and Physiology DivisionIndian Institute of Chemical BiologyKolkataIndia
| | - Walter Wahli
- Lee Kong Chian School of MedicineNanyang Technological UniversitySingaporeSingapore
| | - Pankaj R. Patel
- Zydus Research CentreCadila Healthcare LimitedAhmedabadGujaratIndia
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200
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Borrelli A, Bonelli P, Tuccillo FM, Goldfine ID, Evans JL, Buonaguro FM, Mancini A. Role of gut microbiota and oxidative stress in the progression of non-alcoholic fatty liver disease to hepatocarcinoma: Current and innovative therapeutic approaches. Redox Biol 2018; 15:467-479. [PMID: 29413959 PMCID: PMC5975181 DOI: 10.1016/j.redox.2018.01.009] [Citation(s) in RCA: 177] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 01/10/2018] [Accepted: 01/17/2018] [Indexed: 02/07/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) represents the most common chronic liver disease in industrialized countries. NAFLD progresses through the inflammatory phase of non-alcoholic steatohepatitis (NASH) to fibrosis and cirrhosis, with some cases developing liver failure or hepatocellular carcinoma (HCC). Liver biopsy remains the gold standard approach to a definitive diagnosis of NAFLD and the distinction between simple steatosis and NASH. The pathogenesis of NASH is still not clear. Several theories have been proposed ranging from the "Two Hit Theory" to the "Multiple Hit Theory". However, the general consensus is that the gut microbiota, oxidative stress, and mitochondrial damage play key roles in the pathogenesis of NASH. The interaction between the gut epithelia and some commensal bacteria induces the rapid generation of reactive oxygen species (ROS). The main goal of any therapy addressing NASH is to reverse or prevent progression to liver fibrosis/cirrhosis. This problem represents the first "Achilles' heel" of the new molecules being evaluated in most ongoing clinical trials. The second is the inability of these molecules to reach the mitochondria, the primary sites of energy production and ROS generation. Recently, a variety of non-pharmacological and pharmacological treatment approaches for NASH have been evaluated including vitamin E, the thiazolidinediones, and novel molecules related to NASH pathogenesis (including obeticholic acid and elafibranor). Recently, a new isoform of human manganese superoxide dismutase (MnSOD) was isolated and obtained in a synthetic recombinant form designated rMnSOD. This protein has been shown to be a powerful antioxidant capable of mediating ROS dismutation, penetrating biological barriers via its uncleaved leader peptide, and reducing portal hypertension and fibrosis in rats affected by liver cirrhosis. Based on these distinctive characteristics, it can be hypothesized that this novel recombinant protein (rMnSOD) potentially represents a new and highly efficient adjuvant therapy to counteract the progression from NASH to HCC.
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Affiliation(s)
- Antonella Borrelli
- Molecular Biology and Viral Oncology Unit, Istituto Nazionale Tumori IRCCS "Fondazione G Pascale", 80131 Napoli, Italy.
| | - Patrizia Bonelli
- Molecular Biology and Viral Oncology Unit, Istituto Nazionale Tumori IRCCS "Fondazione G Pascale", 80131 Napoli, Italy
| | - Franca Maria Tuccillo
- Molecular Biology and Viral Oncology Unit, Istituto Nazionale Tumori IRCCS "Fondazione G Pascale", 80131 Napoli, Italy
| | | | | | - Franco Maria Buonaguro
- Molecular Biology and Viral Oncology Unit, Istituto Nazionale Tumori IRCCS "Fondazione G Pascale", 80131 Napoli, Italy
| | - Aldo Mancini
- Leadhexa Biotechnologies Inc., Belvedere, CA, USA
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