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Bernal W, Karvellas C, Saliba F, Saner FH, Meersseman P. Intensive care management of acute-on-chronic liver failure. J Hepatol 2021; 75 Suppl 1:S163-S177. [PMID: 34039487 DOI: 10.1016/j.jhep.2020.10.024] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/20/2020] [Accepted: 10/21/2020] [Indexed: 02/07/2023]
Abstract
The syndrome of acute-on-chronic liver failure combines deterioration of liver function in a patient with chronic liver disease, with the development of extrahepatic organ failure and high short-term mortality. Its successful management demands a rapid and coherent response to the development of dysfunction and failure of multiple organ systems in an intensive care unit setting. This response recognises the features that distinguish it from other critical illness and addresses the complex interplay between the precipitating insult, the many organ systems involved and the disordered physiology of underlying chronic liver disease. An evidence base is building to support the approaches currently adopted and outcomes for patients with this condition are improving, but mortality remains unacceptably high. Herein, we review practical considerations in critical care management, as well as discussing key knowledge gaps and areas of controversy that require further focussed research.
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Affiliation(s)
- William Bernal
- Liver Intensive Therapy Unit, Institute of Liver Studies, Kings College Hospital, Denmark Hill, London SE5 9RS, United Kingdom.
| | - Constantine Karvellas
- Division of Gastroenterology (Liver Unit), Department of Critical Care Medicine, University of Alberta, 1-40 Zeidler Ledcor Building, Edmonton, Alberta T6G-2X8, Canada
| | - Faouzi Saliba
- AP-HP Hôpital Paul Brousse, Centre Hépato-Biliaire, Université Paris SACLAY, INSERM Unit 1193, Villejuif, France
| | - Fuat H Saner
- Klinik für Allgemein-, Viszeral- und Transplantationschirurgie Universitätsklinikum Essen Hufelandstr. 55 45 147, Essen, Germany
| | - Philippe Meersseman
- Medical Intensive Care Unit, Department of General Internal Medicine, University Hospitals Leuven, Herestraat 49, B-3000, Leuven, Belgium
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52
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Liu C, Cheng Y, Guo Y, Qian H. Magnesium-L-threonate alleviate colonic inflammation and memory impairment in chronic-plus-binge alcohol feeding mice. Brain Res Bull 2021; 174:184-193. [PMID: 34144203 DOI: 10.1016/j.brainresbull.2021.06.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 06/07/2021] [Accepted: 06/13/2021] [Indexed: 12/22/2022]
Abstract
Magnesium-l-threonate (MgT) is considered a food supplement. Alcohol-mediated diseases (AMD) are accompanied by inflammation and memory impairment. The purpose of this study is to investigate the function of MgT in AMD. Hence, chronic-plus-binge alcohol feeding mice model and multiply bioinformatics analysis were performed. Consequently, the expression of inflammatory cytokines downregulated, while the activities of antioxidases decreased in serum, colon, and brain. Interestingly, MgT relieved gut barrier dysfunction and reshaped microbiota. The relative abundance of Akkermansia, Odoribacter, and Blautia were increased, while that of Alloprevotella and Clostridium were decreased. Metabolic analysis elucidated amino acids and glutamate metabolism were enhanced in MgT-treated mice. Furthermore, morris water maze test confirmed memory ability was enhanced. Inflammation cytokines were negatively correlated with Blautia, and Akkermansia. Collectively, MgT relieved inflammation in gut-brain axis of mice, reshaped gut microbiota, and enhanced the amino acids and glutamate metabolism. MgT may be used as a food supplement to prevent inflammation and memory impairment induced by alcohol abuse.
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Affiliation(s)
- Chang Liu
- State Key Laboratory of Food Science and Technology, Jiangnan University, No.1800 Lihu Avenue, Wuxi, Jiangsu Province, 214122, China; School of Food Science and Technology, Jiangnan University, No.1800 Lihu Avenue, Wuxi, Jiangsu Province, 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, No.1800 Lihu Avenue, Wuxi, Jiangsu Province, 214122, China
| | - Yuliang Cheng
- State Key Laboratory of Food Science and Technology, Jiangnan University, No.1800 Lihu Avenue, Wuxi, Jiangsu Province, 214122, China; School of Food Science and Technology, Jiangnan University, No.1800 Lihu Avenue, Wuxi, Jiangsu Province, 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, No.1800 Lihu Avenue, Wuxi, Jiangsu Province, 214122, China
| | - Yahui Guo
- State Key Laboratory of Food Science and Technology, Jiangnan University, No.1800 Lihu Avenue, Wuxi, Jiangsu Province, 214122, China; School of Food Science and Technology, Jiangnan University, No.1800 Lihu Avenue, Wuxi, Jiangsu Province, 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, No.1800 Lihu Avenue, Wuxi, Jiangsu Province, 214122, China
| | - He Qian
- State Key Laboratory of Food Science and Technology, Jiangnan University, No.1800 Lihu Avenue, Wuxi, Jiangsu Province, 214122, China; School of Food Science and Technology, Jiangnan University, No.1800 Lihu Avenue, Wuxi, Jiangsu Province, 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, No.1800 Lihu Avenue, Wuxi, Jiangsu Province, 214122, China.
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53
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Thapa K, Grewal AS, Kanojia N, Rani L, Sharma N, Singh S. Alcoholic and Non-Alcoholic Liver Diseases: Promising Molecular Drug Targets and their Clinical Development. Curr Drug Discov Technol 2021; 18:333-353. [PMID: 31965945 DOI: 10.2174/1570163817666200121143959] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 11/25/2019] [Accepted: 12/04/2019] [Indexed: 11/22/2022]
Abstract
Alcoholic and non-alcoholic fatty liver diseases have become a serious concern worldwide. Both these liver diseases have an identical pathology, starting from simple steatosis to cirrhosis and, ultimately to hepatocellular carcinoma. Treatment options for alcoholic liver disease (ALD) are still the same as they were 50 years ago which include corticosteroids, pentoxifylline, antioxidants, nutritional support and abstinence; and for non-alcoholic fatty liver disease (NAFLD), weight loss, insulin sensitizers, lipid-lowering agents and anti-oxidants are the only treatment options. Despite broad research in understanding the disease pathophysiology, limited treatments are available for clinical use. Some therapeutic strategies based on targeting a specific molecule have been developed to lessen the consequences of disease and are under clinical investigation. Therefore, focus on multiple molecular targets will help develop an efficient therapeutic strategy. This review comprises a brief overview of the pathogenesis of ALD and NAFLD; recent molecular drug targets explored for ALD and NAFLD that may prove to be effective for multiple therapeutic regimens and also the clinical status of these promising drug targets for liver diseases.
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Affiliation(s)
- Komal Thapa
- Chitkara University School of Basic Sciences, Chitkara University, Himachal Pradesh, India
| | - Ajmer Singh Grewal
- Chitkara University School of Basic Sciences, Chitkara University, Himachal Pradesh, India
| | - Neha Kanojia
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Lata Rani
- Chitkara University School of Basic Sciences, Chitkara University, Himachal Pradesh, India
| | - Neelam Sharma
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Sukhbir Singh
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
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54
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Liu SY, Tsai IT, Hsu YC. Alcohol-Related Liver Disease: Basic Mechanisms and Clinical Perspectives. Int J Mol Sci 2021; 22:5170. [PMID: 34068269 PMCID: PMC8153142 DOI: 10.3390/ijms22105170] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 05/07/2021] [Accepted: 05/12/2021] [Indexed: 12/12/2022] Open
Abstract
Alcohol-related liver disease (ALD) refers to the liver damage occurring due to excessive alcohol consumption and involves a broad spectrum of diseases that includes liver steatosis, steatohepatitis, hepatitis, cirrhosis, and hepatocellular carcinoma (HCC). The progression of ALD is mainly associated with the amount and duration of alcohol usage; however, it is also influenced by genetic, epigenetic, and environmental factors. The definite diagnosis of ALD is based on a liver biopsy, although several non-invasive diagnostic tools and serum biomarkers have emerging roles in the early detection of ALD. While alcohol abstinence and nutritional support remain the cornerstone of ALD treatment, growing evidence has revealed that the therapeutic agents that target oxidative stress or gut-liver axis, inflammatory response inhibition, and liver regeneration enhancement also play a role in ALD management. Furthermore, microRNAs modulation and mesenchymal stem cell-based therapy have emerging potential as ALD therapeutic options. This review summarizes the updated understanding of the pathophysiology, diagnosis, and novel therapeutic approaches for ALD.
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Affiliation(s)
- Szu-Yi Liu
- Department of Emergency Medicine, E-Da Hospital, I-Shou University, Kaohsiung 82445, Taiwan; (S.-Y.L.); (I.-T.T.)
| | - I-Ting Tsai
- Department of Emergency Medicine, E-Da Hospital, I-Shou University, Kaohsiung 82445, Taiwan; (S.-Y.L.); (I.-T.T.)
- School of Medicine for International Student, I-Shou University, Kaohsiung 82445, Taiwan
| | - Yin-Chou Hsu
- Department of Emergency Medicine, E-Da Hospital, I-Shou University, Kaohsiung 82445, Taiwan; (S.-Y.L.); (I.-T.T.)
- School of Medicine for International Student, I-Shou University, Kaohsiung 82445, Taiwan
- School of Chinese Medicine for Post Baccalaureate, I-Shou University, Kaohsiung 82445, Taiwan
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55
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The Impact of the NLRP3 Pathway in the Pathogenesis of Non-Alcoholic Fatty Liver Disease and Alcohol-Related Liver Disease. LIVERS 2021. [DOI: 10.3390/livers1020007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The presence of hepatic steatosis and inflammation is increasingly associated with both metabolic and alcohol-related liver conditions. Both are on the increase globally and, apart from liver transplantation, there are no licensed therapies that target the full complement of disease features. The presence of some shared pathogenic mechanisms and histological features in NAFLD and ALD suggests that it may be possible to develop markers for prognostication or staging, or indeed new therapeutic tools to treat both conditions. One such example of an approach exists in the form of the NACHT-, LRR-, and pyrin domain-containing protein 3 (NLRP3) inflammasome pathway. Activation of the NLRP3 inflammasome results in hepatocyte pyroptosis, persistence, and amplification of liver inflammation and activation of profibrogenic signaling cascades. Thus, targeting elements of the pathway in NAFLD and ALD may provide a tractable route to pharmacological therapy. In this review, we summarize the contribution of this inflammasome to disease and review the current options for therapy.
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56
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Abstract
PURPOSE OF REVIEW The current article aims to review the latest literature on updates in therapeutics for alcohol-associated liver disease (ALD), integration of treatment of alcohol use disorder (AUD) into the management of ALD, and the role of liver transplantation for alcoholic hepatitis. RECENT FINDINGS ALD has recently become the most common indication for liver transplantation due to the increasing prevalence of AUD and the paucity of therapeutic options. There is broad consensus on the importance of early identification of AUD and the incorporation of its treatment in the management of ALD. New targets for treatment of alcoholic hepatitis include the gut-liver axis, anti-inflammatory drugs, antioxidants, and drugs with hepatic regenerative potential. Fecal transplantation in particular has had favorable outcomes at 1 year. n-Acetylcysteine in addition to corticosteroids, granulocyte colony stimulating factor, and IL-22 have also shown improved short-term outcomes. A number of other therapies are being studied in clinical trials and their results are anxiously awaited. SUMMARY In summary, there are several promising therapeutic options under clinical investigation for the treatment of alcoholic hepatitis and ALD; however, alcohol abstinence is key. In the absence of other effective therapies, liver transplantation for ALD remains a life-saving treatment with excellent patient and graft survival.
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Affiliation(s)
- Margarita N German
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
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57
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Buchanan R, Sinclair JMA. Alcohol use disorder and the liver. Addiction 2021; 116:1270-1278. [PMID: 32710592 DOI: 10.1111/add.15204] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 06/19/2020] [Accepted: 07/17/2020] [Indexed: 12/23/2022]
Abstract
Alcohol use disorders (AUD) cause a range of physical harms, but the major cause of alcohol-related mortality is alcohol-related liver disease (ALD), in some countries accounting for almost 90% of alcohol-related deaths. The risk of ALD has an exponential relationship with increasing alcohol consumption, but is also associated with genetic factors, other life-style factors and social deprivation. ALD includes a spectrum of progressive pathology, from liver steatosis to fibrosis and liver cirrhosis. There are no specific treatments for liver cirrhosis, but abstinence from alcohol is key to limit progression of the disease. Over time, cirrhosis can progress (often silently) to decompensated cirrhosis and hepatocellular carcinoma (HCC). Liver transplantation may be suitable for patients with decompensated liver cirrhosis and may also be used as a curative intervention for HCC, but only for a few selected patients, and complete abstinence is a prerequisite. Patients with AUD are also at risk of developing alcoholic hepatitis, which has a high mortality and limited evidence for effective therapies. There is a strong evidence base for the effectiveness of psychosocial and pharmacological interventions for AUD, but very few of these have been trialled in patients with comorbid ALD. Integrated specialist alcohol and hepatology collaborations are required to develop interventions and pathways for patients with ALD and ongoing AUD.
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Affiliation(s)
- Ryan Buchanan
- Department of Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Julia M A Sinclair
- Department of Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
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58
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Translational Approaches with Antioxidant Phytochemicals against Alcohol-Mediated Oxidative Stress, Gut Dysbiosis, Intestinal Barrier Dysfunction, and Fatty Liver Disease. Antioxidants (Basel) 2021; 10:antiox10030384. [PMID: 33806556 PMCID: PMC8000766 DOI: 10.3390/antiox10030384] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 02/25/2021] [Accepted: 02/25/2021] [Indexed: 12/12/2022] Open
Abstract
Emerging data demonstrate the important roles of altered gut microbiomes (dysbiosis) in many disease states in the peripheral tissues and the central nervous system. Gut dysbiosis with decreased ratios of Bacteroidetes/Firmicutes and other changes are reported to be caused by many disease states and various environmental factors, such as ethanol (e.g., alcohol drinking), Western-style high-fat diets, high fructose, etc. It is also caused by genetic factors, including genetic polymorphisms and epigenetic changes in different individuals. Gut dysbiosis, impaired intestinal barrier function, and elevated serum endotoxin levels can be observed in human patients and/or experimental rodent models exposed to these factors or with certain disease states. However, gut dysbiosis and leaky gut can be normalized through lifestyle alterations such as increased consumption of healthy diets with various fruits and vegetables containing many different kinds of antioxidant phytochemicals. In this review, we describe the mechanisms of gut dysbiosis, leaky gut, endotoxemia, and fatty liver disease with a specific focus on the alcohol-associated pathways. We also mention translational approaches by discussing the benefits of many antioxidant phytochemicals and/or their metabolites against alcohol-mediated oxidative stress, gut dysbiosis, intestinal barrier dysfunction, and fatty liver disease.
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59
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Subramaniyan V, Chakravarthi S, Jegasothy R, Seng WY, Fuloria NK, Fuloria S, Hazarika I, Das A. Alcohol-associated liver disease: A review on its pathophysiology, diagnosis and drug therapy. Toxicol Rep 2021; 8:376-385. [PMID: 33680863 PMCID: PMC7910406 DOI: 10.1016/j.toxrep.2021.02.010] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 02/11/2021] [Accepted: 02/12/2021] [Indexed: 12/13/2022] Open
Abstract
One of the global burdens of health care is an alcohol-associated liver disease (ALD) and liver-related death which is caused due to acute or chronic consumption of alcohol. Chronic consumption of alcohol damage the normal defense mechanism of the liver and likely to disturb the gut barrier system, mucosal immune cells, which leads to decreased nutrient absorption. Therapy of ALD depends upon the spectrum of liver injury that causes fatty liver, hepatitis, and cirrhosis. The foundation of therapy starts with abstinence from alcohol. Corticosteroids are used for the treatment of ALD but due to poor acceptance, continuing mortality, and identification of tumor necrosis factor-alpha as an integral component in pathogenesis, recent studies focus on pentoxifylline and, antitumor necrosis factor antibody to neutralize cytokines in the therapy of severe alcoholic hepatitis. Antioxidants also play a significant role in the treatment but till today there is no universally accepted therapy available for any stage of ALD. The treatment aspects need to restore the gut functions and require nutrient-based treatments to regulate the functions of the gut system and prevent liver injury. The vital action of saturated fatty acids greatly controls the gut barrier. Overall, this review mainly focuses on the mechanism of alcohol-induced metabolic dysfunction, contribution to liver pathogenesis, the effect of pregnancy, and targeted therapy of ALD.
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Key Words
- ALD, alcohol associated liver disease
- ALT, alanine aminotransferase
- AST, aspartate aminotransferase
- Alcohol
- CD14, cluster of differentiation14
- CHD, congenital heart disease
- ECM, extracellualr matrix
- FASD, fetal alcohol spectrum disorders
- FDA, food and drug administration
- GGTP, gamma-glutamyl transpeptidase
- GSH, Glutathione
- H2O2, hydrogen peroxide
- HCV, chronic hepatitis C
- HSC, hepatic stellate cells
- IGR, intrauterine growth retardation
- IL, interleukin
- Immune modulation
- JECH, Japan Environment and Children's Study
- Liver pathogenesis
- MDF, maddrey’s discriminant function
- NA, nutritional assessment
- NAC, N-acetylcysteine
- NADPH, Nicotinamide adenine dinucleotide phosphate
- OLT, Orthotopic liver transplantation
- Pregnancy
- ROS, reactive oxygen species
- TLR4, toll-like receptor 4
- TNF, Tumor necrosis factor
- Targeted therapy
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Affiliation(s)
- Vetriselvan Subramaniyan
- Department of Pharmacology, Faculty of Medicine, Bioscience and Nursing, MAHSA University, SP 2, Bandar Saujana Putra, 42610, Malaysia
| | - Srikumar Chakravarthi
- Department of Pathology, Faculty of Medicine, Bioscience and Nursing, MAHSA University, SP 2, Bandar Saujana Putra, 42610, Malaysia
| | - Ravindran Jegasothy
- Department of Obstetrics and Gynecology, Faculty of Medicine, Bioscience and Nursing, MAHSA University, SP 2, Bandar Saujana Putra, 42610, Malaysia
| | - Wu Yuan Seng
- Department of Biochemistry, Faculty of Medicine, Bioscience and Nursing, MAHSA University, SP 2, Bandar Saujana Putra, 42610, Malaysia
| | - Neeraj Kumar Fuloria
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy AIMST University, Jalan Bedong-Semeling, 08100, Malaysia
| | - Shivkanya Fuloria
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy AIMST University, Jalan Bedong-Semeling, 08100, Malaysia
| | - Iswar Hazarika
- Department of Pharmacology, Girijananda Chowdhury Institute of Pharmaceutical Sciences, Guwahati, 781017, India
| | - Anju Das
- Department of Pharmacology, Royal School of Pharmacy, Royal Global University, Guwahati, 781035, India
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60
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Bruellman R, Llorente C. A Perspective Of Intestinal Immune-Microbiome Interactions In Alcohol-Associated Liver Disease. Int J Biol Sci 2021; 17:307-327. [PMID: 33390852 PMCID: PMC7757023 DOI: 10.7150/ijbs.53589] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 11/13/2020] [Indexed: 02/07/2023] Open
Abstract
Uncovering the intricacies of the gut microbiome and how it interacts with the host immune system has opened up pathways in the search for the treatment of disease conditions. Alcohol-associated liver disease is a major cause of death worldwide. Research has shed light on the breakdown of the protective gut barriers, translocation of gut microbes to the liver and inflammatory immune response to microbes all contributing to alcohol-associated liver disease. This knowledge has opened up avenues for alternative therapies to alleviate alcohol-associated liver disease based on the interaction of the commensal gut microbiome as a key player in the regulation of the immune response. This review describes the relevance of the intestinal immune system, the gut microbiota, and specialized and non-specialized intestinal cells in the regulation of intestinal homeostasis. It also reflects how these components are altered during alcohol-associated liver disease and discusses new approaches for potential future therapies in alcohol-associated liver disease.
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Affiliation(s)
- Ryan Bruellman
- Department of Medicine, University of California San Diego, La Jolla, CA, USA
| | - Cristina Llorente
- Department of Medicine, University of California San Diego, La Jolla, CA, USA
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61
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Immunological mechanisms and therapeutic targets of fatty liver diseases. Cell Mol Immunol 2020; 18:73-91. [PMID: 33268887 PMCID: PMC7852578 DOI: 10.1038/s41423-020-00579-3] [Citation(s) in RCA: 94] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 10/13/2020] [Indexed: 02/06/2023] Open
Abstract
Alcoholic liver disease (ALD) and nonalcoholic fatty liver disease (NAFLD) are the two major types of chronic liver disease worldwide. Inflammatory processes play key roles in the pathogeneses of fatty liver diseases, and continuous inflammation promotes the progression of alcoholic steatohepatitis (ASH) and nonalcoholic steatohepatitis (NASH). Although both ALD and NAFLD are closely related to inflammation, their respective developmental mechanisms differ to some extent. Here, we review the roles of multiple immunological mechanisms and therapeutic targets related to the inflammation associated with fatty liver diseases and the differences in the progression of ASH and NASH. Multiple cell types in the liver, including macrophages, neutrophils, other immune cell types and hepatocytes, are involved in fatty liver disease inflammation. In addition, microRNAs (miRNAs), extracellular vesicles (EVs), and complement also contribute to the inflammatory process, as does intertissue crosstalk between the liver and the intestine, adipose tissue, and the nervous system. We point out that inflammation also plays important roles in promoting liver repair and controlling bacterial infections. Understanding the complex regulatory process of disrupted homeostasis during the development of fatty liver diseases may lead to the development of improved targeted therapeutic intervention strategies.
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62
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Liu K, Wang FS, Xu R. Neutrophils in liver diseases: pathogenesis and therapeutic targets. Cell Mol Immunol 2020; 18:38-44. [PMID: 33159158 PMCID: PMC7852892 DOI: 10.1038/s41423-020-00560-0] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Accepted: 09/15/2020] [Indexed: 02/06/2023] Open
Abstract
Previously, it was assumed that peripheral neutrophils are a homogeneous population that displays antimicrobial functions. However, recent data have revealed that neutrophils are heterogeneous and are additionally involved in tissue damage and immune regulation. The phenotypic and functional plasticity of neutrophils has been identified in patients with cancer, inflammatory disorders, infections, and other diseases. Currently, neutrophils, with their autocrine, paracrine, and immune modulation functions, have been shown to be involved in liver diseases, including viral hepatitis, nonalcoholic steatohepatitis, alcoholic liver disease, liver fibrosis, cirrhosis, liver failure, and liver cancer. Accordingly, this review summarizes the role of neutrophils in liver diseases.
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Affiliation(s)
- Kai Liu
- Peking University 302 Clinical Medical School, Beijing, China.,Treatment and Research Center for Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
| | - Fu-Sheng Wang
- Peking University 302 Clinical Medical School, Beijing, China. .,Treatment and Research Center for Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China.
| | - Ruonan Xu
- Treatment and Research Center for Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China.
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63
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Wang M, Chen WY, Zhang J, Gobejishvili L, Barve SS, McClain CJ, Joshi-Barve S. Elevated Fructose and Uric Acid Through Aldose Reductase Contribute to Experimental and Human Alcoholic Liver Disease. Hepatology 2020; 72:1617-1637. [PMID: 32086945 DOI: 10.1002/hep.31197] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 01/28/2020] [Accepted: 01/30/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND AIMS Alcohol-associated liver disease (ALD) is a common chronic liver disease worldwide with high morbidity and mortality, and no Food and Drug Administration-approved therapies. Fructose (dietary or endogenous), its metabolite uric acid, and aldose reductase (AR, the only endogenous enzyme that produces fructose) are strongly associated with the development of nonalcoholic fatty liver disease. However, the role of AR or its metabolites in ALD remains understudied and was examined using human specimens, cultured cells, and mouse model systems. APPROACH AND RESULTS We demonstrated in liver specimens from patients with alcoholic hepatitis, the AR up-regulation and elevated AR metabolites (sorbitol, fructose, and uric acid), which correlated significantly with (1) increased lipid peroxidation byproducts and endoplasmic reticulum (ER) stress, (2) decreased protective ER chaperones, and (3) greater cell death and liver injury. Furthermore, we established a causal role for AR in ALD by showing that the genetic deficiency of AR (knockout mice) prevented alcohol-induced increase in harmful AR metabolites, toxic aldehydes, steatosis, ER stress, apoptosis, and liver injury. Finally, we demonstrated the therapeutic potential of pharmacological AR inhibition against alcohol-induced hepatic injury in experimental ALD. CONCLUSIONS Our data demonstrate that hepatic AR up-regulation, and consequent elevation in fructose, sorbitol and/or uric acid, are important factors contributing to alcohol-induced steatosis, ER stress, apoptosis, and liver injury in both experimental and human ALD. Our study provides a strong rationale to evaluate AR as a potential therapeutic target and to test AR inhibitors to ameliorate alcohol-induced liver injury.
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Affiliation(s)
- Min Wang
- Department of Medicine, University of Louisville, Louisville, KY.,Alcohol Research Center, University of Louisville, Louisville, KY.,Hepatobiology and Toxicology Center, University of Louisville, Louisville, KY
| | - Wei-Yang Chen
- Alcohol Research Center, University of Louisville, Louisville, KY.,Department of Pharmacology & Toxicology, University of Louisville, Louisville, KY
| | - Jingwen Zhang
- Department of Medicine, University of Louisville, Louisville, KY.,Alcohol Research Center, University of Louisville, Louisville, KY.,Hepatobiology and Toxicology Center, University of Louisville, Louisville, KY
| | - Leila Gobejishvili
- Department of Medicine, University of Louisville, Louisville, KY.,Alcohol Research Center, University of Louisville, Louisville, KY.,Hepatobiology and Toxicology Center, University of Louisville, Louisville, KY.,Department of Pharmacology & Toxicology, University of Louisville, Louisville, KY
| | - Shirish S Barve
- Department of Medicine, University of Louisville, Louisville, KY.,Alcohol Research Center, University of Louisville, Louisville, KY.,Hepatobiology and Toxicology Center, University of Louisville, Louisville, KY.,Department of Pharmacology & Toxicology, University of Louisville, Louisville, KY
| | - Craig J McClain
- Department of Medicine, University of Louisville, Louisville, KY.,Alcohol Research Center, University of Louisville, Louisville, KY.,Hepatobiology and Toxicology Center, University of Louisville, Louisville, KY.,Department of Pharmacology & Toxicology, University of Louisville, Louisville, KY.,Robley Rex VAMC, Louisville, KY
| | - Swati Joshi-Barve
- Department of Medicine, University of Louisville, Louisville, KY.,Alcohol Research Center, University of Louisville, Louisville, KY.,Hepatobiology and Toxicology Center, University of Louisville, Louisville, KY.,Department of Pharmacology & Toxicology, University of Louisville, Louisville, KY
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64
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Atkinson SR, Grove JI, Liebig S, Astbury S, Vergis N, Goldin R, Quaglia A, Bantel H, Guha IN, Thursz MR, Newcombe P, Strnad P, Aithal GP. In Severe Alcoholic Hepatitis, Serum Keratin-18 Fragments Are Diagnostic, Prognostic, and Theragnostic Biomarkers. Am J Gastroenterol 2020; 115:1857-1868. [PMID: 33156105 DOI: 10.14309/ajg.0000000000000912] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
INTRODUCTION Up to 40% of patients with severe alcoholic hepatitis (AH) die within 6 months of presentation, making prompt diagnosis and appropriate treatment essential. We determined the associations between serum keratin-18 (K18) and histological features, prognosis, and differential response to prednisolone in patients with severe AH. METHODS Total (K18-M65) and caspase-cleaved K18 (K18-M30) were quantified in pretreatment sera from 824 patients enrolled in the Steroids or Pentoxifylline for Alcoholic Hepatitis trial (87 with suitable histological samples) and disease controls. RESULTS K18 fragments were markedly elevated in severe AH and strongly predicted steatohepatitis (alcoholic steatohepatitis) on biopsy (area under receiver operating characteristics: 0.787 and 0.807). Application of published thresholds to predict alcoholic steatohepatitis would have rendered biopsy unnecessary in 84% of all AH cases. K18-M30 and M65 were associated with 90-day mortality, independent of age and Model for End-stage Liver Disease score in untreated patients. The association for K18-M65 was independent of both age and Model for End-stage Liver Disease in prednisolone-treated patients. Modelling of the effect of prednisolone on 90-day mortality as a function of pretreatment serum K18 levels indicated benefit in those with high serum levels of K18-M30. At low pretreatment serum K18 levels, prednisolone was potentially harmful. A threshold of K18-M30 5 kIU/L predicted therapeutic benefit from prednisolone above this level (odds ratio: 0.433, 95% confidence interval: 0.19-0.95, P = 0.0398), but not below (odds ratio: 1.271, 95% confidence interval: 0.88-1.84, P = 0.199). Restricting prednisolone usage to the former group would have reduced exposure by 87%. DISCUSSION In a large cohort of patients with severe AH, serum K18 strongly correlated with histological severity, independently associated with 90-day mortality, and predicted response to prednisolone therapy. Quantification of serum K18 levels could assist in clinical decision-making.
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Affiliation(s)
| | - Jane I Grove
- NIHR Nottingham Biomedical Research Centre (BRC), Nottingham University Hospitals NHS Trust and the University of Nottingham, Nottingham, UK
- Nottingham Digestive Diseases Centre, School of Medicine, University of Nottingham, Nottingham, UK
| | - Stephanie Liebig
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Stuart Astbury
- NIHR Nottingham Biomedical Research Centre (BRC), Nottingham University Hospitals NHS Trust and the University of Nottingham, Nottingham, UK
- Nottingham Digestive Diseases Centre, School of Medicine, University of Nottingham, Nottingham, UK
| | - Nikhil Vergis
- Department of Hepatology, Imperial College London, London, UK
| | - Robert Goldin
- Department of Hepatology, Imperial College London, London, UK
| | - Alberto Quaglia
- Department of Cellular Pathology, Royal Free London and UCL Cancer Institute, London, UK
| | - Heike Bantel
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Indra Neil Guha
- NIHR Nottingham Biomedical Research Centre (BRC), Nottingham University Hospitals NHS Trust and the University of Nottingham, Nottingham, UK
- Nottingham Digestive Diseases Centre, School of Medicine, University of Nottingham, Nottingham, UK
| | - Mark R Thursz
- Department of Hepatology, Imperial College London, London, UK
| | - Paul Newcombe
- MRC Biostatistics Unit, University of Cambridge, Cambridge, UK
| | - Pavel Strnad
- Medical Clinic III, Gastroenterology, Metabolic Diseases and Intensive Care, University Hospital RWTH Aachen, Aachen, German
| | - Guruprasad P Aithal
- NIHR Nottingham Biomedical Research Centre (BRC), Nottingham University Hospitals NHS Trust and the University of Nottingham, Nottingham, UK
- Nottingham Digestive Diseases Centre, School of Medicine, University of Nottingham, Nottingham, UK
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Wu YL, Huang SH, He CM, Qiu B, Liu JJ, Li J, Lin Y, Yu SL, Wang HF, Zhang GF. Dendrobium officinale Flower Extraction Mitigates Alcohol-Induced Liver Injury in Mice: Role of Antisteatosis, Antioxidative, and Anti-Inflammatory. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2020; 2020:1421853. [PMID: 33149748 PMCID: PMC7603571 DOI: 10.1155/2020/1421853] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 09/05/2020] [Accepted: 09/30/2020] [Indexed: 02/07/2023]
Abstract
The study aimed to evaluate the protective effect of Dendrobium officinale flower extraction (DOFE) on alcohol-induced liver injury and its probable mechanisms in mice. The chemical composition of DOFE was performed via UPLC/MS. Male Kunming mice were used to establish alcohol-induced liver injury models by oral gavage of 56% alcohol. Results showed that DOFE dramatically attenuated the increased serum levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST), total cholesterol (TC), and triacylglycerol (TG). Meanwhile, hematoxylin and eosin and Oil Red O staining showed that DOFE attenuated degeneration, inflammatory infiltration, and lipid droplet accumulation. DOFE was also found to suppress the activity of malonaldehyde (MDA) and enhanced the level of glutathione (GSH) and the activities of superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), and catalase (CAT) in the liver. The protection of DOFE against oxidative stress was associated with the downregulation of hepatic cytochrome P450 2E1 (CYP2E1) and upregulation of nuclear factor erythroid 2-related factor 2 (Nrf2), heme oxygenase-1 (HO-1), and NAD(P)H quinone oxidoreductase l (NQO1). Additionally, DOFE suppressed inflammation via downregulating Toll-like receptor-4 (TLR-4) and nuclear factor kappa-B P65 (NF-κB P65). Thus, DOFE exhibited a significant protective effect against alcohol-induced liver injury through its antisteatosis, antioxidative, and anti-inflammatory effect.
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Affiliation(s)
- Yu-Lin Wu
- Guangdong Provincial Key Laboratory of New Drug Development and Research of Chinese Medicine, Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510000, China
| | - Si-Han Huang
- Medical College of Jiaying University, Jiaying University, Meizhou 514000, China
| | - Chun-Mei He
- Guangdong Provincial Key Laboratory of Silviculture, Protection and Utilization, Guangdong Academy of Forestry, Guangzhou 510000, China
| | - Bo Qiu
- Medical College of Jiaying University, Jiaying University, Meizhou 514000, China
| | - Jing-Jing Liu
- Guangdong Provincial Key Laboratory of New Drug Development and Research of Chinese Medicine, Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510000, China
| | - Jia Li
- Guangdong Provincial Key Laboratory of New Drug Development and Research of Chinese Medicine, Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510000, China
| | - Ying Lin
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510000, China
| | - Sheng-Lu Yu
- Liannan Yao Autonomous County Xinshengtang Biological Technology Co., Ltd., Qingyuan 511500, China
| | - Hong-Feng Wang
- Guangdong Provincial Key Laboratory of Silviculture, Protection and Utilization, Guangdong Academy of Forestry, Guangzhou 510000, China
| | - Gui-Fang Zhang
- Guangdong Provincial Key Laboratory of New Drug Development and Research of Chinese Medicine, Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510000, China
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Chemical Components and Hepatoprotective Mechanism of Xwak Granule in Mice Treated with Acute Alcohol. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:8538474. [PMID: 33062026 PMCID: PMC7539125 DOI: 10.1155/2020/8538474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 07/24/2020] [Accepted: 08/03/2020] [Indexed: 11/17/2022]
Abstract
Objective To evaluate the hepatoprotective mechanism of Xwak granule (Xwak) in treatment of mice with alcoholic liver injury via activating ERK/NF-κB and Nrf/HO-1 signaling pathways. Methods The chemical composition of Xwak was tested by liquid chromatography coupled with mass spectrometry (LC-MS). Herein, 1,1-diphenyl-2-picrylhydrazyl (DPPH) scavenging assay and 2,2-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid (ABTS) radical tests were performed in vitro. The hepatoprotective effect of Xwak was assessed at different concentrations (1.5, 3, and 6 g/kg) in a mouse model of alcoholic liver injury. Results Totally, 48 compounds, including 16 flavonoids, 8 tannins, 9 chlorogenic acids, and 15 other compounds, were identified from Xwak. Xwak showed to have a satisfactory antioxidant activity in vitro. In a group of Xwak-treated mice, the serum levels of alanine transaminase (ALT), aspartate transaminase (AST), and alkaline phosphatase (ALP) were decreased compared with a group of the mouse model of alcoholic liver injury. In addition, the levels of antioxidant enzymes, such as glutathione peroxidase (GSH-PX), total superoxide dismutase (T-SOD), and catalase (CAT), were noticeably increased and the levels of malondialdehyde (MDA), tumor necrosis factor-α (TNF-α), transforming growth factor-β (TGF-β), and interleukin-6 (IL-6) were markedly reduced in the liver of mice. The state of oxidative stress in the mouse model of alcoholic liver injury was improved after treatment with Xwak. The improvement of inflammation-mediated disruption may conducive to the Xwak activity in the control of liver injury. The signals of p-ERK1/2, p-NF-κB, COX-2, iNOS, CYP2E1, Nrf, and HO-1 were significantly induced in the liver of mice after treatment with Xwak. Conclusions The abovementioned findings indicated that the hepatoprotective mechanism of Xwak could be achieved by activating ERK/NF-κB and Nrf/HO-1 signaling pathways to alleviate oxidative stress and inflammatory.
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Xiang X, Hwang S, Feng D, Shah VH, Gao B. Interleukin-22 in alcoholic hepatitis and beyond. Hepatol Int 2020; 14:667-676. [PMID: 32892258 PMCID: PMC7572732 DOI: 10.1007/s12072-020-10082-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 08/17/2020] [Indexed: 12/12/2022]
Abstract
Alcoholic hepatitis (AH) is a clinical syndrome characterized by jaundice and progressive inflammatory liver injury in patients with a history of prolonged periods of excess alcohol consumption and recent heavy alcohol abuse. Severe AH is a life-threatening form of alcohol-associated liver disease with a high short-term mortality rate around 30-50% at one month from the initial presentation. A large number of pro-inflammatory mediators, metabolic pathways, transcriptional factors and epigenetic factors have been suggested to be associated with the development and progression of AH. Several factors may contribute to liver failure and mortality in patients with severe AH including hepatocyte death, inflammation, and impaired liver regeneration. Although the pathogeneses of AH have been extensively investigated and many therapeutic targets have been identified over the last five decades, no new drugs for AH have been successfully developed. In this review, we discuss interleukin-22 (IL-22) biology and its roles of anti-apoptosis, anti-fibrosis, anti-oxidation, anti-bacterial infection and regenerative stimulation in protecting against liver injury in many preclinical models including several recently developed models such as chronic-plus-binge ethanol feeding, acute-on-chronic liver failure, C-X-C motif chemokine ligand 1 plus high-fat diet-induced nonalcoholic steatohepatitis. Finally, clinical trials of IL-22 for the treatment of AH are also discussed, which showed some promising benefits for AH patients.
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Affiliation(s)
- Xiaogang Xiang
- Department of Infectious Diseases, Translational Laboratory of Liver Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
- Laboratory of Liver Diseases, National Institute On Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Seonghwan Hwang
- Laboratory of Liver Diseases, National Institute On Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Dechun Feng
- Laboratory of Liver Diseases, National Institute On Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Vijay H Shah
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, 55902, USA
| | - Bin Gao
- Laboratory of Liver Diseases, National Institute On Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA.
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Model to Predict Progression of Liver Disease in Heavy Drinkers Is Useful Today and Supports the Future of Deep Learning. Clin Gastroenterol Hepatol 2020; 18:2176-2178. [PMID: 32062043 DOI: 10.1016/j.cgh.2020.02.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 02/09/2020] [Indexed: 02/07/2023]
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Velarde-Ruiz Velasco JA, Higuera-de la Tijera MF, Castro-Narro GE, Zamarripa-Dorsey F, Abdo-Francis JM, Aiza Haddad I, Aldana Ledesma JM, Bielsa-Fernández MV, Cerda-Reyes E, Cisneros-Garza LE, Contreras-Omaña R, Reyes-Dorantes A, Fernández-Pérez NJ, García-Jiménez ES, Icaza-Chávez ME, Kershenobich-Stalnikowitz D, Lira-Pedrín MA, Moreno-Alcántar R, Pérez-Hernández JL, Ramos-Gómez MV, Rizo-Robles MT, Solana-Sentíes S, Torre-Delgadillo A. The Mexican consensus on alcoholic hepatitis. REVISTA DE GASTROENTEROLOGIA DE MEXICO (ENGLISH) 2020; 85:332-353. [PMID: 32532534 DOI: 10.1016/j.rgmx.2020.04.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 04/07/2020] [Indexed: 06/11/2023]
Abstract
Alcoholic hepatitis is a frequent condition in the Mexican population. It is characterized by acute-on-chronic liver failure, important systemic inflammatory response, and multiple organ failure. The severe variant of the disease implies elevated mortality. Therefore, the Asociación Mexicana de Gastroenterología and the Asociación Mexicana de Hepatología brought together a multidisciplinary team of health professionals to formulate the first Mexican consensus on alcoholic hepatitis, carried out utilizing the Delphi method and resulting in 37 recommendations. Alcohol-related liver disease covers a broad spectrum of pathologies that includes steatosis, steatohepatitis, different grades of fibrosis, and cirrhosis and its complications. Severe alcoholic hepatitis is defined by a modified Maddrey's discriminant function score ≥ 32 or by a Model for End-Stage Liver Disease (MELD) score equal to or above 21. There is currently no specific biomarker for its diagnosis. Leukocytosis with neutrophilia, hyperbilirubinemia (> 3 mg/dL), AST > 50 U/l (< 400 U/l), and an AST/ALT ratio > 1.5-2 can guide the diagnosis. Abstinence from alcohol, together with nutritional support, is the cornerstone of treatment. Steroids are indicated for severe disease and have been effective in reducing the 28-day mortality rate. At present, liver transplantation is the only life-saving option for patients that are nonresponders to steroids. Certain drugs, such as N-acetylcysteine, granulocyte-colony stimulating factor, and metadoxine, can be adjuvant therapies with a positive impact on patient survival.
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Affiliation(s)
- J A Velarde-Ruiz Velasco
- Servicio de Gastroenterología; Hospital Civil de Guadalajara Fray Antonio Alcalde, Guadalajara, Jalisco, México.
| | - M F Higuera-de la Tijera
- Servicio de Gastroenterología, Hospital General de México Dr. Eduardo Liceaga, Ciudad de México, México
| | - G E Castro-Narro
- Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México, México
| | | | | | - I Aiza Haddad
- Clínica de Enfermedades Hepáticas, Hospital Ángeles Lomas, Estado de México, México
| | - J M Aldana Ledesma
- Servicio de Gastroenterología; Hospital Civil de Guadalajara Fray Antonio Alcalde, Guadalajara, Jalisco, México
| | | | | | | | - R Contreras-Omaña
- Centro de Investigación en Enfermedades Hepáticas y Gastroenterología, Pachuca, Hidalgo, México
| | | | | | - E S García-Jiménez
- Servicio de Gastroenterología; Hospital Civil de Guadalajara Fray Antonio Alcalde, Guadalajara, Jalisco, México
| | | | | | - M A Lira-Pedrín
- Servicio de Medicina Interna y Gastroenterología. Hospital y Centro Médico del Prado, Tijuana, Baja California, México
| | - R Moreno-Alcántar
- Unidad Médica de Alta Especialidad, Hospital de Especialidades CMN SXXI, Ciudad de México, México
| | - J L Pérez-Hernández
- Servicio de Gastroenterología, Hospital General de México Dr. Eduardo Liceaga, Ciudad de México, México; Hospital Central Sur de Alta Especialidad Petróleos Mexicanos, Ciudad de México, México
| | - M V Ramos-Gómez
- Centro Médico Nacional 20 de Noviembre, Ciudad de México, México
| | - M T Rizo-Robles
- Unidad Médica de Alta Especialidad, Hospital de Especialidades CMN SXXI, Ciudad de México, México
| | | | - A Torre-Delgadillo
- Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México, México
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Velarde-Ruiz Velasco J, Higuera-de la Tijera M, Castro-Narro G, Zamarripa-Dorsey F, Abdo-Francis J, Haddad IA, Aldana Ledesma J, Bielsa-Fernández M, Cerda-Reyes E, Cisneros-Garza L, Contreras-Omaña R, Reyes-Dorantes A, Fernández-Pérez N, García-Jiménez E, Icaza-Chávez M, Kershenobich-Stalnikowitz D, Lira-Pedrín M, Moreno-Alcántar R, Pérez-Hernández J, Ramos-Gómez M, Rizo-Robles M, Solana-Sentíes S, Torre-Delgadillo A. The Mexican consensus on alcoholic hepatitis. REVISTA DE GASTROENTEROLOGÍA DE MÉXICO (ENGLISH EDITION) 2020. [DOI: 10.1016/j.rgmxen.2020.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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Bertha M, Maddur H. Highlights From the AASLD/EASL ALD Endpoints Conference 2019. Clin Liver Dis (Hoboken) 2020; 15:215-218. [PMID: 32617152 PMCID: PMC7326629 DOI: 10.1002/cld.927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 01/11/2020] [Indexed: 02/04/2023] Open
Abstract
Watch a video presentation of this article Watch an interview with the author.
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Choi BR, Cho IJ, Jung SJ, Kim JK, Park SM, Lee DG, Ku SK, Park KM. Lemon balm and dandelion leaf extract synergistically alleviate ethanol-induced hepatotoxicity by enhancing antioxidant and anti-inflammatory activity. J Food Biochem 2020; 44:e13232. [PMID: 32497278 DOI: 10.1111/jfbc.13232] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 02/28/2020] [Accepted: 03/20/2020] [Indexed: 12/19/2022]
Abstract
We investigated the effect of a 2:1 (w/w) mixture of lemon balm and dandelion extracts (LD) on ethanol (EtOH)-mediated liver injury and explored the underlying mechanisms. Administration of LD synergistically reduced relative liver weight and decreased the levels of serum biomarkers of hepatic injury. Histopathological and biochemical analyses indicated that LD synergistically attenuated hepatic accumulation of triacylglycerides (TGs) and restored the levels of mRNAs related to fatty acid metabolism. In addition, LD significantly reduced EtOH-induced hepatic oxidative stress by attenuating the reduction in levels of nuclear factor E2-related factor 2 (Nrf2) mRNA and enhancing antioxidant activity. Moreover, LD decreased the EtOH-mediated increase in levels of hepatic tumor necrosis factor-α (TNF-α) mRNA. In vitro, LD significantly scavenged free radicals, increased cell viability against tert-butylhydroperoxide (tBHP), and transactivated Nrf2 target genes in HepG2 cells. Furthermore, LD decreased levels of pro-inflammatory mediators in lipopolysaccharide-stimulated Raw264.7 cells. Therefore, LD shows promise for preventing EtOH-mediated liver injury. PRACTICAL APPLICATIONS: There were no approved therapeutic agents for preventing and/or treating alcoholic liver diseases. In this study, a 2:1 (w/w) mixture of lemon balm and dandelion leaf extract (DL) synergistically ameliorated EtOH-induced hepatic injury by inhibiting lipid accumulation, oxidative stress, and inflammation. Our findings will enable the development of a novel food supplement for the prevention or treatment of alcohol-mediated liver injury.
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Affiliation(s)
- Beom-Rak Choi
- Department of Foodscience and Biotechnology, Sungkyunkwan University, Suwon, Republic of Korea.,Nutracore Co., Ltd, Suwon, Republic of Korea
| | - Il Je Cho
- College of Korean Medicine, Daegu Haany University, Gyeongsan, Republic of Korea
| | - Su-Jin Jung
- Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Republic of Korea
| | - Jae Kwang Kim
- College of Korean Medicine, Daegu Haany University, Gyeongsan, Republic of Korea
| | - Sang Mi Park
- College of Korean Medicine, Daegu Haany University, Gyeongsan, Republic of Korea
| | - Dae Geon Lee
- College of Korean Medicine, Daegu Haany University, Gyeongsan, Republic of Korea
| | - Sae Kwang Ku
- College of Korean Medicine, Daegu Haany University, Gyeongsan, Republic of Korea
| | - Ki-Moon Park
- Department of Foodscience and Biotechnology, Sungkyunkwan University, Suwon, Republic of Korea
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Shipley LC, Singal AK. Liver transplantation for alcoholic hepatitis. Transl Gastroenterol Hepatol 2020; 5:26. [PMID: 32258530 DOI: 10.21037/tgh.2019.11.17] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 11/05/2019] [Indexed: 12/12/2022] Open
Abstract
Alcoholic hepatitis (AH) is associated with a high short-term mortality. Currently, most transplant centers require minimum six months of abstinence from alcohol use before considering liver transplant for patients with end stage liver disease. Some recent data are emerging on the benefits and safety of early liver transplantation for patients with severe AH, a population who cannot meet the minimum six months sobriety. This article reviews the current status, benefits, challenges, barriers, and future prospects on early liver transplantation in patients with severe, acute AH.
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Affiliation(s)
- Lindsey C Shipley
- Division of Internal Medicine, University of Alabama, Birmingham, AL, USA
| | - Ashwani K Singal
- Division of Gastroenterology and Hepatology, University of South Dakota, Avera McKennan University Health Center and Transplant Institute, Sioux Falls, SD, USA
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Mandrekar P. Targeting Epigenetic Mechanisms to Alleviate Alcoholic Steatosis. Cell Mol Gastroenterol Hepatol 2020; 9:713-714. [PMID: 32097606 PMCID: PMC7212487 DOI: 10.1016/j.jcmgh.2020.01.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Revised: 01/28/2020] [Accepted: 01/30/2020] [Indexed: 01/01/2023]
Affiliation(s)
- Pranoti Mandrekar
- Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts.
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Asrani SK, Trotter J, Lake J, Ahmad A, Bonagura A, Cameron A, DiMartini A, Gonzalez S, Im G, Martin P, Mathurin P, Mellinger J, Rice JP, Shah V, Terrault N, Wall A, Winder S, Klintmalm G. Meeting Report: The Dallas Consensus Conference on Liver Transplantation for Alcohol Associated Hepatitis. Liver Transpl 2020; 26:127-140. [PMID: 31743578 PMCID: PMC8151800 DOI: 10.1002/lt.25681] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 10/29/2019] [Indexed: 12/13/2022]
Abstract
Liver transplantation (LT) for alcohol associated hepatitis (AH) remains controversial. We convened a consensus conference to examine various aspects of LT for AH. The goal was not to unequivocally endorse LT for AH; instead, it was to propose recommendations for programs that perform or plan to perform LT for AH. Criteria were established to determine candidacy for LT in the setting of AH and included the following: (1) AH patients presenting for the first time with decompensated liver disease that are nonresponders to medical therapy without severe medical or psychiatric comorbidities; (2) a fixed period of abstinence prior to transplantation is not required; and (3) assessment with a multidisciplinary psychosocial team, including a social worker and an addiction specialist/mental health professional with addiction and transplantation expertise. Supporting factors included lack of repeated unsuccessful attempts at addiction rehabilitation, lack of other substance use/dependency, acceptance of diagnosis/insight with a commitment of the patient/family to sobriety, and formalized agreement to adhere to total alcohol abstinence and counseling. LT should be avoided in AH patients who are likely to spontaneously recover. Short-term and longterm survival comparable to other indications for LT must be achieved. There should not be further disparity in LT either by indication, geography, or other sociodemographic factors. Treatment of alcohol-use disorders should be incorporated into pre- and post-LT care. The restrictive and focused evaluation process described in the initial LT experience for AH worldwide may not endure as this indication gains wider acceptance at more LT programs. Transparency in the selection process is crucial and requires the collection of objective data to assess outcomes and minimize center variation in listing. Oversight of program adherence is important to harmonize listing practices and outcomes.
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Affiliation(s)
- Sumeet K Asrani
- Baylor University Medical Center, Dallas, Texas,Corresponding author: Sumeet K Asrani MD MSc, Associate Professor of Medicine, Baylor University Medical Center, Dallas Texas, , Tele: 214 820 8500, Fax: 214 820 0993
| | | | - Jack Lake
- University of Minnesota, Minneapolis, Minnesota
| | | | | | | | | | | | | | - Paul Martin
- University of Miami health system, Miami, Florida
| | - Philippe Mathurin
- Service d’Hépato-gastroentérologie, Hôpital Claude Huriez, Lille, France
| | | | | | | | - Norah Terrault
- University of Southern California, Los Angeles, California
| | - Anji Wall
- Baylor University Medical Center, Dallas, Texas
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Testino G, Vignoli T, Patussi V, Scafato E, Caputo F. Management of end-stage alcohol-related liver disease and severe acute alcohol-related hepatitis: position paper of the Italian Society on Alcohol (SIA). Dig Liver Dis 2020; 52:21-32. [PMID: 31757596 DOI: 10.1016/j.dld.2019.09.017] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 08/28/2019] [Accepted: 09/23/2019] [Indexed: 02/07/2023]
Abstract
Worldwide, the prevalence of alcohol use disorder (AUD) is 20-30% in men and 10-15% in women, and cirrhosis due to alcohol-related liver disease (ALD) is responsible for 0.9% of global deaths and 47.9% of cirrhosis-related deaths. End-stage ALD (ESALD) is the final condition of alcohol-related cirrhosis, and severe acute alcohol-related hepatitis (SAAH) is a distinct clinical syndrome associated with the consumption of large amounts of alcohol. In some cases, ESALD, and SAAH may need liver transplantation (LT). Thus, the management of ESALD and SAAH in patients affected by AUD may be an essential part of the clinical skills for hepatologists. For these reasons, the national board of the Italian Society on Alcohol have reviewed the most recent data on the management of ESALD, SAAH and LT for ALD in patients with AUD, formulating a position paper with related recommendations regarding four issues of specific clinical interest in this field: (a) the management of hepatic encephalopathy in patients with AUD, and LT in patients with ESALD; (b) the management of SAAH; (c) the management of AUD in patients with ESALD and SAAH; (d) special populations: polydrug addicts.
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Affiliation(s)
- Gianni Testino
- Unit of Addiction and Hepatology ASL3 Liguria, San Martino Hospital, Genova, Italy
| | - Teo Vignoli
- Unit of Addiction Treatment, Lugo, Ravenna, Italy
| | | | - Emanuele Scafato
- National Observatory on Alcohol, National Institute of Health, Roma, Italy
| | - Fabio Caputo
- Department of Internal Medicine, SS Annunziata Hospital, Cento, Ferrara, Italy; "G. Fontana" Centre for the Study and Multidisciplinary Treatment of Alcohol Addiction, Department of Medical and Surgical Sciences, University of Bologna, Italy.
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77
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Lee JS, Mukhopadhyay P, Matyas C, Trojnar E, Paloczi J, Yang YR, Blank BA, Savage C, Sorokin AV, Mehta NN, Vendruscolo JCM, Koob GF, Vendruscolo LF, Pacher P, Lohoff FW. PCSK9 inhibition as a novel therapeutic target for alcoholic liver disease. Sci Rep 2019; 9:17167. [PMID: 31748600 PMCID: PMC6868240 DOI: 10.1038/s41598-019-53603-6] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 11/04/2019] [Indexed: 12/19/2022] Open
Abstract
Alcoholic liver disease (ALD) causes significant morbidity and mortality, and pharmacological treatment options are limited. In this study, we evaluated the PCSK9 inhibitor alirocumab, a monoclonal antibody that robustly reduces low-density lipoprotein cholesterol (LDL-C), for the treatment of ALD using a rat model of chronic alcohol exposure. Alirocumab (50 mg/kg) or vehicle was administered weekly for 6 weeks to rats receiving a 12% alcohol liquid diet or an isocaloric control diet. At the end of the alcohol exposure protocol, serum and liver samples were obtained for molecular characterization and histopathological analysis. PCSK9 inhibition with alirocumab attenuated alcohol-induced hepatic triglyceride accumulation through regulation of lipid metabolism (mRNA expression of modulators of fatty acid synthesis (FAS) and catabolism (PPARα and CPT1)), hepatocellular injury (ALT), hepatic inflammation (mRNA expression of pro-inflammatory cytokines/chemokines (TNFa, IL-1β, IL-22, IL-33, IL-17α, IL-2, MIP-2, and MCP-1), and neutrophil infiltration (myeloperoxidase staining)). Alirocumab treatment also attenuated alcohol-induced PCSK9 mRNA elevation and upregulated LDL-receptor (LDL-R) via modulation of the transcription factors (SREBP-1, SREBP-2, and E2F1) in liver. We demonstrated that chronic anti-PCSK9 treatment using the monoclonal antibody alirocumab attenuated alcohol-induced steatohepatitis in the rat model. Given the large unmet clinical need for effective and novel treatments for ALD, anti-PCSK9 treatment with the monoclonal antibody that spares liver metabolism is a viable new therapeutic possibility. Future studies are needed to elucidate the exact role of PCSK9 in ALD and alcohol use disorder (AUD) and to evaluate efficacy and safety of anti-PCSK9 treatment in clinical populations with ALD/AUD.
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Affiliation(s)
- Ji Soo Lee
- Section on Clinical Genomics and Experimental Therapeutics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA
| | - Partha Mukhopadhyay
- Laboratory of Cardiovascular Physiology and Tissue Injury, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA
| | - Csaba Matyas
- Laboratory of Cardiovascular Physiology and Tissue Injury, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA
| | - Eszter Trojnar
- Laboratory of Cardiovascular Physiology and Tissue Injury, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA
| | - Janos Paloczi
- Laboratory of Cardiovascular Physiology and Tissue Injury, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA
| | - Yuan Ru Yang
- Laboratory of Cardiovascular Physiology and Tissue Injury, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA
| | - Brandon A Blank
- Neurobiology of Addiction Section, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD, USA
| | - Cody Savage
- Laboratory of Cardiovascular Physiology and Tissue Injury, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA
| | - Alexander V Sorokin
- Lipoprotein Metabolism Section, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Nehal N Mehta
- Section of Inflammation and Cardiometabolic Diseases, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Janaina C M Vendruscolo
- Neurobiology of Addiction Section, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD, USA
| | - George F Koob
- Neurobiology of Addiction Section, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD, USA
| | - Leandro F Vendruscolo
- Neurobiology of Addiction Section, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD, USA
| | - Pal Pacher
- Laboratory of Cardiovascular Physiology and Tissue Injury, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA
| | - Falk W Lohoff
- Section on Clinical Genomics and Experimental Therapeutics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA.
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78
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Philips CA, Augustine P, Yerol PK, Rajesh S, Mahadevan P. Severe alcoholic hepatitis: current perspectives. Hepat Med 2019; 11:97-108. [PMID: 31496843 PMCID: PMC6691395 DOI: 10.2147/hmer.s197933] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 07/18/2019] [Indexed: 12/12/2022] Open
Abstract
Severe acute alcoholic hepatitis (AH) is a catastrophic disease in the natural history of alcoholic liver disease with a very high 180-day mortality. It can present as acute on chronic liver failure with worse prognosis in the presence of infections and higher grades of liver disease severity. The clinical scenario involves a patient with a recent history of heavy alcohol consumption within three months of presentation with jaundice and characteristic liver enzyme elevation pattern with coagulopathy, hepatic encephalopathy, variceal bleeding and sepsis that results in extrahepatic organ failures. Several liver disease severities and therapy response indicators are in clinical use. Even though not approved, the only recommended treatment option for patients with severe AH is corticosteroids, which is without long term survival benefit. Novel efficacious treatment options awaiting high-quality multi-center studies include liver transplantation (involves strict selection criteria), growth factor therapy and fecal microbiota transplantation. In this exhaustive review, we discuss the definitions, disease severity, histopathology, and treatment options – past, present, and future, in patients with severe alcoholic hepatitis.
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Affiliation(s)
- Cyriac Abby Philips
- The Liver Unit, Cochin Gastroenterology Group, Ernakulam Medical Centre, Cochin, Kerala, India
| | - Philip Augustine
- Gastroenterology, Cochin Gastroenterology Group, Ernakulam Medical Centre, Cochin, Kerala, India
| | - Praveen Kumar Yerol
- Department of Gastroenterology, Government Medical College and Hospital, Thrissur, Kerala, India
| | - Sasidharan Rajesh
- Interventional Radiology, Hepatobiliary Division, Cochin Gastroenterology Group, Ernakulam Medical Centre, Cochin, Kerala, India
| | - Pushpa Mahadevan
- Clinical Pathology, VPS Lakeshore Hospital, Nettoor, Kerala, India
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79
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Shipley LC, Kodali S, Singal AK. Recent updates on alcoholic hepatitis. Dig Liver Dis 2019; 51:761-768. [PMID: 31010745 DOI: 10.1016/j.dld.2019.03.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 03/17/2019] [Accepted: 03/22/2019] [Indexed: 02/07/2023]
Abstract
Alcoholic hepatitis (AH) is a unique clinical syndrome that affects patients with chronic and active harmful alcohol consumption, and is associated with a high mortality of up to 40% at 1 month from presentation. It is important to assess disease severity and prognosis at time of presentation to identify patients at risk for high mortality and potential candidates for specific therapies. The cornerstone therapy for AH is enteral nutrition and abstinence. Steroids remain the only pharmacological option for severe AH however, adverse effects and lack of long-term benefit limit their routine use. Early liver transplantation is a potential salvage therapy for select severe AH patients. This review article comprehensively covers recent advances on the clinical unmet needs in the field including newer therapies and therapeutic targets, role of liver transplantation, and emerging biomarkers throughout the disease process from diagnosis, assessing prognosis and disease severity, and predicting responsiveness to medical therapies for severe AH.
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Affiliation(s)
- Lindsey C Shipley
- University of South Dakota Sanford School of Medicine, United States; Avera Transplant Institute, United States
| | - Sudha Kodali
- Division of Gastroenterology and Hepatology, Methodist Hospital, Houston, TX, United States
| | - Ashwani K Singal
- Division of Gastroenterology and Hepatology, University of South Dakota, Avera McKennan University Health Center and Transplant Institute, Sioux Falls, SD 57105, United States.
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80
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Bataller R, Arteel GE, Moreno C, Shah V. Alcohol-related liver disease: Time for action. J Hepatol 2019; 70:221-222. [PMID: 30658723 PMCID: PMC6416779 DOI: 10.1016/j.jhep.2018.12.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 12/11/2018] [Indexed: 12/17/2022]
Affiliation(s)
- Ramon Bataller
- Division of Gastroenterology, Hepatology and Nutrition, Pittsburgh Liver Research Center, University of Pittsburgh, Pittsburgh, PA, USA.
| | - Gavin E. Arteel
- Division of Gastroenterology, Hepatology and Nutrition, Pittsburgh Liver Research Center, University of Pittsburgh, Pittsburgh, PA, USA
| | - Christophe Moreno
- Department of Gastroenterology, Hepatopancreatology and Digestive Oncology, Cliniques Universitaires de Bruxelles Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - Vijay Shah
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
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