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Marek GW, Malhi H. MetALD: Does it require a different therapeutic option? Hepatology 2024:01515467-990000000-00898. [PMID: 38820071 DOI: 10.1097/hep.0000000000000935] [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: 02/23/2024] [Accepted: 05/03/2024] [Indexed: 06/02/2024]
Abstract
New guidelines for the definitions of steatotic liver disease have named the entity of metabolic dysfunction and alcohol-associated liver disease (MetALD) as an overlap condition of metabolic dysfunction-associated steatotic liver disease (MASLD) and alcohol-associated liver disease. There is a broad range of therapeutics in all stages of development for MASLD, but these therapeutics, in general, have not been studied in patients with significant ongoing alcohol use. In this review, we discuss the current understanding of the endogenous and exogenous risks for MASLD and MetALD. Rational strategies for therapeutic intervention in MetALD include biopsychosocial interventions, alcohol use cessation strategies, including the use of medications for alcohol use disorder, and judicious use of therapeutics for steatotic liver disease. Therapeutics with promise for MetALD include incretin-based therapies, FGF21 agonists, thyroid hormone receptor beta agonists, sodium-glucose co-transporter 2 inhibitors, and agents to modify de novo lipogenesis. Currently, glucagon-like peptide 1 receptor agonists and peroxisome proliferator-activated receptor γ agonists have the largest body of literature supporting their use in MASLD, and there is a paucity of agents in trials for alcohol-associated liver disease. From existing studies, it is not clear if unique therapeutics or a combinatorial approach are needed for MetALD. Further elucidation of the safety and benefits of MASLD-related therapies is of paramount importance for advancing therapeutics for MetALD in carefully designed inclusive clinical trials.
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Affiliation(s)
- George W Marek
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota, USA
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Dasgupta D, Ghosh S, Dey I, Majumdar S, Chowdhury S, Das S, Banerjee S, Saha M, Ghosh A, Roy N, Manna A, Ray S, Agarwal S, Bhaumik P, Datta S, Chowdhury A, Banerjee S. Influence of polymorphisms in TNF-α and IL1β on susceptibility to alcohol induced liver diseases and therapeutic potential of miR-124-3p impeding TNF-α/IL1β mediated multi-cellular signaling in liver microenvironment. Front Immunol 2023; 14:1241755. [PMID: 38146363 PMCID: PMC10749309 DOI: 10.3389/fimmu.2023.1241755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 10/23/2023] [Indexed: 12/27/2023] Open
Abstract
Background and aims Alcoholic liver disease (ALD) is the leading cause of the liver cirrhosis related death worldwide. Excessive alcohol consumption resulting enhanced gut permeability which trigger sensitization of inflammatory cells to bacterial endotoxins and induces secretion of cytokines, chemokines leading to activation of stellate cells, neutrophil infiltration and hepatocyte injury followed by steatohepatitis, fibrosis and cirrhosis. But all chronic alcoholics are not susceptible to ALD. This study investigated the causes of differential immune responses among ALD patients and alcoholic controls (ALC) to identify genetic risk factors and assessed the therapeutic potential of a microRNA, miR-124-3p. Materials and methods Bio-Plex Pro™ Human Chemokine analysis/qRT-PCR array was used for identification of deregulated immune genes. Sequencing/luciferase assay/ELISA detected and confirmed the polymorphisms. THP1 co-cultured with HepG2/LX2/HUVEC and apoptosis assay/qRT-PCR/neutrophil migration assay were employed as required. Results The combined data analysis of the GSE143318/Bio-Plex Pro™ Human Chemokine array and qRT-PCR array revealed that six genes (TNFα/IL1β/IL8/MCP1/IL6/TGFβ) were commonly overexpressed in both serum/liver tissue of ALD-patients compared to ALC. The promoter sequence analysis of these 6 genes among ALD (n=322)/ALC (n=168) samples revealed that only two SNPs, rs361525(G/A) at -238 in TNF-α/rs1143627(C/T) at -31 in IL1β were independently associated with ALD respectively. To evaluate the functional implication of these SNPs on ALD development, the serum level of TNF-α/IL1β was verified and observed significantly higher in ALD patients with risk genotypes TNF-α-238GA/IL1β-31CT+TT than TNF-α-238GG/IL1β-31CC. The TNF-α/IL1β promoter Luciferase-reporter assays showed significantly elevated level of luciferase activities with risk genotypes -238AA/-31TT than -238GG/-31CC respectively. Furthermore, treatment of conditioned medium of TNF-α/IL1β over-expressed THP1 cells to HepG2/LX2/HUVEC cells independently showed enhanced level of ER stress and apoptosis in HepG2/increased TGFβ and collagen-I production by LX2/huge neutrophil infiltration through endothelial layer. However, restoration of miR-124-3p in THP1 attenuated such inter-cellular communications and hepatocyte damage/collagen production/neutrophil infiltration were prohibited. Target analysis/luciferase-reporter assays revealed that both TNF-α/IL1β were inhibited by miR-124-3p along with multiple genes from TLR4 signaling/apoptosis/fibrogenesis pathways including MYD88, TRAF3/TRADD, Caspase8/PDGFRA, TGFβR2/MCP1, and ICAM1 respectively. Conclusion Thus, rs361525(G/A) in TNF-α and rs1143627(C/T) in IL1β gene may be used as early predictors of ALD susceptibility among East Indian population. Impeding overexpressed TNF-α/IL1β and various genes from associated immune response pathways, miR-124-3p exhibits robust therapeutic potential for ALD patients.
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Affiliation(s)
- Debanjali Dasgupta
- Centre for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - Suchandrima Ghosh
- Centre for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - Indrashish Dey
- Centre for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - Swagata Majumdar
- Centre for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - Saheli Chowdhury
- Centre for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - Subhas Das
- Centre for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - Sanjana Banerjee
- Centre for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - Mehelana Saha
- Department of Pharmacology, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - Amit Ghosh
- Centre for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - Neelanjana Roy
- Centre for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - Alak Manna
- Department of Pharmacology, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - Sukanta Ray
- Department Gastro-Surgery, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - Shaleen Agarwal
- Liver Transplant and Biliary Sciences, Max Saket West Super Speciality Hospital, New Delhi, India
| | - Pradeep Bhaumik
- Department of Medicine, Agartala Government Medical College, West Tripura, India
| | - Simanti Datta
- Centre for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - Abhijit Chowdhury
- Department of Hepatology, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - Soma Banerjee
- Centre for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
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Kukowka A, Brzuchalski B, Kurzawski M, Malinowski D, Białecka MA. ADH1B, ADH1B/C and CYP2E1 Gene Polymorphism and the Risk of Fetal Alcohol Spectrum Disorder. Genes (Basel) 2023; 14:1392. [PMID: 37510297 PMCID: PMC10379323 DOI: 10.3390/genes14071392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/24/2023] [Accepted: 06/27/2023] [Indexed: 07/30/2023] Open
Abstract
Increasing alcohol consumption by women of childbearing age contributes to more frequent cases of fetal alcohol spectrum disorder. The cause of the syndrome is fetal alcohol exposure, particularly what is referred to as high prenatal alcohol exposure. Low metabolic activity of fetal enzymes shifts the burden of ethanol removal to maternal metabolism. One of the factors influencing the pathogenesis of FASD is the genetic background. It can determine the rate of elimination of ethanol, thus increasing or decreasing the time of fetal exposure to ethanol and also decreasing its concentration. Genetic polymorphisms could potentially play a significant role in these processes. In the present study, we considered three polymorphisms of genes implicated in the synthesis of enzymes involved in ethanol metabolism, i.e., ADH1b (rs1229984), ADH1b/c (rs1789891), and CYP2E1 (rs3813867). The studied group consisted of 303 children and 251 mothers. Both mothers' and children's genotypes were considered in our analysis. There were no statistically significant differences between the respective groups of genotypes of the studied polymorphisms. However, the genetic background of FASD is still elusive.
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Affiliation(s)
- Arnold Kukowka
- Department of Pharmacokinetics and Therapeutic Drug Monitoring, Pomeranian Medical University, Aleja Powstanców Wielkopolskich 72 St., 70-111 Szczecin, Poland (D.M.)
| | - Bogusław Brzuchalski
- Department of Pharmacokinetics and Therapeutic Drug Monitoring, Pomeranian Medical University, Aleja Powstanców Wielkopolskich 72 St., 70-111 Szczecin, Poland (D.M.)
| | - Mateusz Kurzawski
- Department of Experimental and Clinical Pharmacology, Pomeranian Medical University, Aleja Powstanców Wielkopolskich 72 St., 70-111 Szczecin, Poland;
| | - Damian Malinowski
- Department of Pharmacokinetics and Therapeutic Drug Monitoring, Pomeranian Medical University, Aleja Powstanców Wielkopolskich 72 St., 70-111 Szczecin, Poland (D.M.)
| | - Monika Anna Białecka
- Department of Pharmacokinetics and Therapeutic Drug Monitoring, Pomeranian Medical University, Aleja Powstanców Wielkopolskich 72 St., 70-111 Szczecin, Poland (D.M.)
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Gao S, Shi J, Wang K, Tan Y, Hong H, Luo Y. Protective effects of oyster protein hydrolysates on alcohol-induced liver disease (ALD) in mice: based on the mechanism of anti-oxidative metabolism. Food Funct 2022; 13:8411-8424. [PMID: 35857308 DOI: 10.1039/d2fo00660j] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Many bioactivities of hydrolysates from oyster (Crassostrea gigas) muscle have been reported, while there is no knowledge about their protective effects on alcohol-induced liver disease (ALD). In the present study, the anti-oxidative activities in vitro and molecular weight distribution of oyster protein hydrolysates (OPH) were detected and the OPH released by alcalase (AOPH) was used to treat C57BL/6 mice. C57BL/6 mice were treated with a Lindros control diet to establish an ethanol-exposed model. The content of small-weight components (<2.0 kDa) of OPH reached 90.85%. AOPH showed more potent antioxidant activities in vitro with higher reducing power and ferric reducing antioxidant power (FRAP), and those capacities could be maintained at a high level after simulated gastrointestinal digestion. Compared to the model mice, oral administration (4 weeks) of AOPH at 800 mg per kg body weight could lead to a decline in T-AOC, GSH-PX, and ADH in the liver. The hepatocellular lesions were effectively relieved and impaired liver tissue development was successfully inhibited. A total of 834 genes and 54 proteins showed differential expression in the AOPH group and the oxidative metabolic pathways of ethanol such as oxidative phosphorylation, glutathione metabolism, peroxisomes, the PPAR signaling pathway and drug metabolism-cytochrome P450 play a preeminent role in ALD according to the results of transcriptomics and proteomics. The beneficial effects of AOPH were available in the improvement of ALD. These results revealed that AOPH intervention ameliorated ALD by affecting oxidative metabolism and highlighting AOPH's potential application as a functional food.
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Affiliation(s)
- Song Gao
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China.
| | - Jing Shi
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China. .,State Key Laboratory of Direct-Fed Microbial Engineering, Beijing DaBeiNong Science and Technology Group Co., Ltd., Beijing, 100192, China
| | - Kai Wang
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China.
| | - Yuqing Tan
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China.
| | - Hui Hong
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China.
| | - Yongkang Luo
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, China. .,National Research and Development Center for Freshwater Fish Processing, Jiangxi Normal University, Nanchang, Jiangxi, 330022, China
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Chen Y, Liu H, Yu Z, Yang Y, Huang Q, Deng C, Rao H, Wu H. ALDH2 Polymorphism rs671 *1/*2 Genotype is a Risk Factor for the Development of Alcoholic Liver Cirrhosis in Hakka Alcoholics. Int J Gen Med 2022; 15:4067-4077. [PMID: 35450031 PMCID: PMC9017692 DOI: 10.2147/ijgm.s356761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Accepted: 04/05/2022] [Indexed: 01/19/2023] Open
Abstract
Background Alcoholics are prone to alcoholic cirrhosis (ALC). Aldehyde dehydrogenase 2 (ALDH2) is involved in alcohol metabolism. Herein, the relationship between ALDH2 genotypes and ALC was analyzed among Hakka alcoholics in southern China. Methods A total of 213 alcoholics and 214 non-alcoholics were included in the study. The ALDH2 gene rs671 polymorphism was analyzed, life history, disease history, and auxiliary examination results of these participants were collected. Results The alcoholics had higher level of total serum protein, and serum globulin, lower level of serum albumin, serum albumin/globulin ratio, serum prealbumin, neutrophil-to-lymphocyte ratio (NLR), lymphocyte-to-monocyte ratio (LMR), and platelet-to-lymphocyte ratio (PLR) than non-alcoholics. In the 213 alcoholics, 180 developed ALC. There were 206 non-ALC persons in the 214 non-alcoholics. The proportion of the ALDH2 rs671 G/G homozygous (*1/*1) was significantly lower in ALC patients (83.3%) than that of other groups (100.0% in non-ALC in alcoholics, 95.6% in non-ALC in non-alcoholics), while the proportion of the G/A heterozygous (*1/*2) was significantly higher in ALC patients (16.7%) than that of other groups (0% in non-ALC in alcoholics, 4.4% in non-ALC in non-alcoholics). Logistic regression analysis indicated that participants with low level of NLR (adjusted OR 5.543, 95% CI 2.964–10.368, P<0.001), LMR (adjusted OR 9.256, 95% CI 4.740–18.076, P<0.001), and PLR (adjusted OR 6.047, 95% CI 3.372–10.845, P<0.001), and ALDH2 G/A genotype (adjusted OR 6.323, 95% CI 2.477–16.140, P<0.001) had a significantly higher risk of ALC. Conclusion ALDH2 polymorphism rs671 *1/*2 genotype is a potential risk factor for the development of ALC among Hakka alcoholics.
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Affiliation(s)
- Yijin Chen
- Department of Gastroenterology, Meizhou People's Hospital (Huangtang Hospital), Meizhou Academy of Medical Sciences, Meizhou, People's Republic of China.,Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population, Meizhou People's Hospital (Huangtang Hospital), Meizhou Academy of Medical Sciences, Meizhou, People's Republic of China
| | - Hongtao Liu
- Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population, Meizhou People's Hospital (Huangtang Hospital), Meizhou Academy of Medical Sciences, Meizhou, People's Republic of China.,Department of Gastrointestinal Surgery, Meizhou People's Hospital (Huangtang Hospital), Meizhou Academy of Medical Sciences, Meizhou, People's Republic of China
| | - Zhikang Yu
- Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population, Meizhou People's Hospital (Huangtang Hospital), Meizhou Academy of Medical Sciences, Meizhou, People's Republic of China.,Center for Precision Medicine, Meizhou People's Hospital (Huangtang Hospital), Meizhou Academy of Medical Sciences, Meizhou, People's Republic of China
| | - Yang Yang
- Department of Gastroenterology, Meizhou People's Hospital (Huangtang Hospital), Meizhou Academy of Medical Sciences, Meizhou, People's Republic of China.,Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population, Meizhou People's Hospital (Huangtang Hospital), Meizhou Academy of Medical Sciences, Meizhou, People's Republic of China
| | - Qingyan Huang
- Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population, Meizhou People's Hospital (Huangtang Hospital), Meizhou Academy of Medical Sciences, Meizhou, People's Republic of China.,Center for Precision Medicine, Meizhou People's Hospital (Huangtang Hospital), Meizhou Academy of Medical Sciences, Meizhou, People's Republic of China
| | - Changqing Deng
- Department of Gastroenterology, Meizhou People's Hospital (Huangtang Hospital), Meizhou Academy of Medical Sciences, Meizhou, People's Republic of China.,Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population, Meizhou People's Hospital (Huangtang Hospital), Meizhou Academy of Medical Sciences, Meizhou, People's Republic of China
| | - Hui Rao
- Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population, Meizhou People's Hospital (Huangtang Hospital), Meizhou Academy of Medical Sciences, Meizhou, People's Republic of China.,Center for Precision Medicine, Meizhou People's Hospital (Huangtang Hospital), Meizhou Academy of Medical Sciences, Meizhou, People's Republic of China
| | - Heming Wu
- Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population, Meizhou People's Hospital (Huangtang Hospital), Meizhou Academy of Medical Sciences, Meizhou, People's Republic of China.,Center for Precision Medicine, Meizhou People's Hospital (Huangtang Hospital), Meizhou Academy of Medical Sciences, Meizhou, People's Republic of China
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Balakrishnan R, Mohammed V, Veerabathiran R. The role of genetic mutation in alcoholic liver disease. EGYPTIAN LIVER JOURNAL 2022. [DOI: 10.1186/s43066-022-00175-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Alcoholic liver disease (ALD) is the world’s most common type of liver disease caused due to overconsumption of alcohol. The liver supports the best level of tissue damage by hefty drinking since it is the binding site of ethanol digestion. This disease can progress to alcoholic steatohepatitis from alcoholic fatty liver, which implies steatosis has become the most punctual reaction to hefty drinking and is portrayed by the deposition of fat hepatocytes. In addition, steatosis can advance to steatohepatitis, a more extreme, provocative sort of liver damage described by hepatic inflammation. Constant and unnecessary liquor utilization delivers a wide range of hepatic sores, fibrosis and cirrhosis, and sometimes hepatocellular carcinoma. Most people consuming > 40 g of liquor each day create alcoholic fatty liver (AFL); notwithstanding, just a subset of people will grow further developed infection. Hereditary, epigenetic, and non-hereditary components may clarify the impressive interindividual variety in the ALD phenotype.
Main body
This systematic review is to classify new candidate genes associated with alcoholic liver disorders, such as RASGRF2, ALDH2, NFE2L2, ADH1B, PNPLA3, DRD2, MTHFR, TM6SF2, IL1B, and CYP2E1, MBOAT7 as well as to revise the functions of each gene in its polymorphic sequence. The information obtained from the previously published articles revealed the crucial relationship between the genes and ALD and discussed each selected gene’s mechanism.
Conclusion
The aim of this review is to highlight the candidate genes associated with the ALD, and the evidence of this study is to deliberate the part of genetic alterations and modifications that can serve as an excellent biological maker, risk predictors, and therapeutic targets for this disease.
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Zeng D, Huang Q, Yu Z, Wu H. Association between aldehyde dehydrogenase 2 gene rs671 G>A polymorphism and alcoholic liver cirrhosis in southern Chinese Hakka population. J Clin Lab Anal 2021; 35:e23855. [PMID: 34033144 PMCID: PMC8274999 DOI: 10.1002/jcla.23855] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 05/01/2021] [Accepted: 05/13/2021] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND Alcoholic liver cirrhosis (ALC) endangering people's health. The association between aldehyde dehydrogenase 2 (ALDH2) gene polymorphisms and ALC is not clear. To analyze the relationship between ALDH2 and ALC among Hakka population in southern China. METHODS A total of 292 ALC patients and 278 controls were included in the study. The ALDH2 gene rs671 polymorphism was analyzed by polymerase chain reaction (PCR)-gene chip. Relevant information and medical records of these participants were collected. RESULTS The ALC patients had higher percentage of smoking, lower prevalence of hypertension, higher level of alanine aminotransferase (ALT), aspertate aminotransferase (AST), alkaline phosphatase (ALP), gamma-glutamyltransferase (GGT), total bile acid (TBA), total bilirubin (Tbil), and direct bilirubin (Dbil), lower level of total cholesterol (TC), high-density lipoprotein-cholesterol (HDL-C), and low-density lipoprotein-cholesterol (LDL-C) than controls. The proportions of the G/A genotype (p = 0.017), G/A plus A/A genotype (p = 0.023) and A allele (p = 0.031) were significantly higher in ALC patients than that of controls. ALC patients with G/A genotype had higher TC, HDL-C, and Apo-A1 than those with G/G genotype, while with A allele had higher HDL-C, and Apo-A1 than those with G allele. Logistic regression analysis indicated that ALDH2 SNP rs671 G/A plus A/A genotypes (A allele carriers) (OR 2.030, 95% CI 1.109-3.715, p = 0.022) in the dominant model was the risk factor for ALC. CONCLUSIONS ALDH2 A allele (G/A + A/A genotypes) increased the risk of developing ALC among Hakka people in southern China. The results should enrich the relevant data and provide valuable information for the future related research.
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Affiliation(s)
- Dehui Zeng
- Center for Digestive Diseases, Meizhou People's Hospital (Huangtang Hospital)Meizhou Academy of Medical SciencesMeizhou Hospital Affiliated to Sun Yat‐sen UniversityMeizhouChina
- Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka PopulationMeizhou People's Hospital (Huangtang Hospital)Meizhou Academy of Medical SciencesMeizhou Hospital Affiliated to Sun Yat‐sen UniversityMeizhouChina
- Guangdong Provincial Engineering and Technology Research Center for Clinical Molecular Diagnostics and Antibody TherapeuticsMeizhou People's Hospital (Huangtang Hospital)Meizhou Academy of Medical SciencesMeizhou Hospital Affiliated to Sun Yat‐sen UniversityMeizhouChina
| | - Qingyan Huang
- Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka PopulationMeizhou People's Hospital (Huangtang Hospital)Meizhou Academy of Medical SciencesMeizhou Hospital Affiliated to Sun Yat‐sen UniversityMeizhouChina
- Guangdong Provincial Engineering and Technology Research Center for Clinical Molecular Diagnostics and Antibody TherapeuticsMeizhou People's Hospital (Huangtang Hospital)Meizhou Academy of Medical SciencesMeizhou Hospital Affiliated to Sun Yat‐sen UniversityMeizhouChina
- Center for Precision MedicineMeizhou People's Hospital (Huangtang Hospital)Meizhou Academy of Medical SciencesMeizhou Hospital Affiliated to Sun Yat‐sen UniversityMeizhouChina
| | - Zhikang Yu
- Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka PopulationMeizhou People's Hospital (Huangtang Hospital)Meizhou Academy of Medical SciencesMeizhou Hospital Affiliated to Sun Yat‐sen UniversityMeizhouChina
- Guangdong Provincial Engineering and Technology Research Center for Clinical Molecular Diagnostics and Antibody TherapeuticsMeizhou People's Hospital (Huangtang Hospital)Meizhou Academy of Medical SciencesMeizhou Hospital Affiliated to Sun Yat‐sen UniversityMeizhouChina
- Center for Precision MedicineMeizhou People's Hospital (Huangtang Hospital)Meizhou Academy of Medical SciencesMeizhou Hospital Affiliated to Sun Yat‐sen UniversityMeizhouChina
| | - Heming Wu
- Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka PopulationMeizhou People's Hospital (Huangtang Hospital)Meizhou Academy of Medical SciencesMeizhou Hospital Affiliated to Sun Yat‐sen UniversityMeizhouChina
- Guangdong Provincial Engineering and Technology Research Center for Clinical Molecular Diagnostics and Antibody TherapeuticsMeizhou People's Hospital (Huangtang Hospital)Meizhou Academy of Medical SciencesMeizhou Hospital Affiliated to Sun Yat‐sen UniversityMeizhouChina
- Center for Precision MedicineMeizhou People's Hospital (Huangtang Hospital)Meizhou Academy of Medical SciencesMeizhou Hospital Affiliated to Sun Yat‐sen UniversityMeizhouChina
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Zaso MJ, Goodhines PA, Wall TL, Park A. Meta-Analysis on Associations of Alcohol Metabolism Genes With Alcohol Use Disorder in East Asians. Alcohol Alcohol 2019; 54:216-224. [PMID: 30834931 DOI: 10.1093/alcalc/agz011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 01/27/2019] [Accepted: 02/21/2019] [Indexed: 12/20/2022] Open
Abstract
AIMS The current meta-analysis tested independent and composite associations of three commonly studied alcohol metabolism alleles with alcohol use disorder (AUD) within East Asians as well as characterized potential moderating factors in these associations. METHODS For meta-analysis, 32 articles were selected that investigated ALDH2 (n = 17,755), ADH1B (n = 13,591) and ADH1C (n = 4,093) associations with AUD in East Asians. RESULTS AND CONCLUSIONS All three variants were associated with AUD across allelic and genotypic models: ALDH2, ORs = 0.25, P < 0.001; ADH1B, ORs = 0.22-0.49, P < 0.001; ADH1C, ORs = 0.26-0.46, P < 0.001. Composite analyses suggested genetic associations did not differ across ALDH2*2 and ADH1B*2, correcting for multiple comparisons. Moderation analyses suggested ADH1B was more strongly associated with AUD among samples with cases recruited from treatment than the community. Also, strength of ALDH2 and/or ADH1B associations varied with mean age and proportion of men in cases and controls. Findings support medium to large and unique associations of ALDH2, ADH1B, and ADH1C with AUD in East Asians. Results also identified novel methodological and sample characteristics that may modulate strength of these associations.
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Affiliation(s)
- Michelle J Zaso
- Department of Psychology, Syracuse University, 430 Huntington Hall, Syracuse, NY, USA
| | - Patricia A Goodhines
- Department of Psychology, Syracuse University, 430 Huntington Hall, Syracuse, NY, USA
| | - Tamara L Wall
- Department of Psychiatry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA, USA.,V.A. San Diego Health System, 3350 La Jolla Village Drive, San Diego, CA, USA
| | - Aesoon Park
- Department of Psychology, Syracuse University, 430 Huntington Hall, Syracuse, NY, USA
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Tu Y, Zhu S, Wang J, Burstein E, Jia D. Natural compounds in the chemoprevention of alcoholic liver disease. Phytother Res 2019; 33:2192-2212. [PMID: 31264302 DOI: 10.1002/ptr.6410] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Revised: 04/29/2019] [Accepted: 05/21/2019] [Indexed: 12/17/2022]
Abstract
Alcoholic liver disease (ALD), caused by excessive consumption of alcohol, is a major cause of chronic liver disease worldwide. Much effort has been expended to explore the pathogenesis of ALD. Hepatic cell injury, oxidative stress, inflammation, regeneration, and bacterial translocation are all involved in the pathogenesis of ALD. Immediate abstinence is the most important therapeutic treatment for affected individuals. However, the medical treatment for ALD had not advanced in a long period. Intriguingly, an increasing body of research indicates the potential of natural compounds in the targeted therapy of ALD. A plethora of dietary natural products such as flavonoids, resveratrol, saponins, and β-carotene are found to exert protective effects on ALD. This occurs through various mechanisms composed of antioxidative, anti-inflammatory, iron chelation, pro-apoptosis, and/or antiproliferation of hepatic stellate cells and hepatocellular carcinoma cells. In this review, we will summarize current knowledge about the pathogenesis and treatments of ALD and focus on the potential of natural compounds in ALD therapies and underlying mechanisms.
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Affiliation(s)
- Yingfeng Tu
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Department of Paediatrics, West China Second University Hospital, State Key Laboratory of Biotherapy, Sichuan University, Chengdu, China
| | - Shu Zhu
- Chinese Academy of Science and Technology for Development, Ministry of Science and Technology, Institute of Foresight and Evaluation Research, Beijing, China
| | - Jing Wang
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Department of Paediatrics, West China Second University Hospital, State Key Laboratory of Biotherapy, Sichuan University, Chengdu, China
| | - Ezra Burstein
- Department of Internal Medicine, University of Texas, Southwestern Medical Center, Dallas, TX, USA
| | - Da Jia
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Department of Paediatrics, West China Second University Hospital, State Key Laboratory of Biotherapy, Sichuan University, Chengdu, China
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Abstract
PURPOSE OF REVIEW We review the search for genetic variants that affect the risk for alcohol dependence and alcohol consumption. RECENT FINDINGS Variations in genes affecting alcohol metabolism (ADH1B, ALDH2) are protective against both alcohol dependence and excessive consumption, but different variants are found in different populations. There are different patterns of risk variants for alcohol dependence vs. consumption. Variants for alcohol dependence, but not consumption, are associated with risk for other psychiatric illnesses. ADH1B and ALDH2 strongly affect both consumption and dependence. Variations in many other genes affect both consumption and dependence-or one or the other of these traits-but individual effect sizes are small. Evidence for other specific genes that affect dependence is not yet strong. Most current knowledge derives from studies of European-ancestry populations, and large studies of carefully phenotyped subjects from different populations are needed to understand the genetic contributions to alcohol consumption and alcohol use disorders.
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Meroni M, Longo M, Rametta R, Dongiovanni P. Genetic and Epigenetic Modifiers of Alcoholic Liver Disease. Int J Mol Sci 2018; 19:E3857. [PMID: 30513996 PMCID: PMC6320903 DOI: 10.3390/ijms19123857] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 10/31/2018] [Accepted: 11/28/2018] [Indexed: 12/12/2022] Open
Abstract
Alcoholic liver disease (ALD), a disorder caused by excessive alcohol consumption is a global health issue. More than two billion people consume alcohol in the world and about 75 million are classified as having alcohol disorders. ALD embraces a wide spectrum of hepatic lesions including steatosis, alcoholic steatohepatitis (ASH), fibrosis, cirrhosis, and hepatocellular carcinoma (HCC). ALD is a complex disease where environmental, genetic, and epigenetic factors contribute to its pathogenesis and progression. The severity of alcohol-induced liver disease depends on the amount, method of usage and duration of alcohol consumption as well as on age, gender, presence of obesity, and genetic susceptibility. Genome-wide association studies and candidate gene studies have identified genetic modifiers of ALD that can be exploited as non-invasive biomarkers, but which do not completely explain the phenotypic variability. Indeed, ALD development and progression is also modulated by epigenetic factors. The premise of this review is to discuss the role of genetic variants and epigenetic modifications, with particular attention being paid to microRNAs, as pathogenic markers, risk predictors, and therapeutic targets in ALD.
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Affiliation(s)
- Marica Meroni
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Pad. Granelli, via F Sforza 35, 20122 Milan, Italy.
| | - Miriam Longo
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Pad. Granelli, via F Sforza 35, 20122 Milan, Italy.
| | - Raffaela Rametta
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Pad. Granelli, via F Sforza 35, 20122 Milan, Italy.
| | - Paola Dongiovanni
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Pad. Granelli, via F Sforza 35, 20122 Milan, Italy.
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Edenberg HJ, McClintick JN. Alcohol Dehydrogenases, Aldehyde Dehydrogenases, and Alcohol Use Disorders: A Critical Review. Alcohol Clin Exp Res 2018; 42:2281-2297. [PMID: 30320893 PMCID: PMC6286250 DOI: 10.1111/acer.13904] [Citation(s) in RCA: 139] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 10/07/2018] [Indexed: 12/20/2022]
Abstract
Alcohol use disorders (AUDs) are complex traits, meaning that variations in many genes contribute to the risk, as does the environment. Although the total genetic contribution to risk is substantial, most individual variations make only very small contributions. By far the strongest contributors are functional variations in 2 genes involved in alcohol (ethanol [EtOH]) metabolism. A functional variant in alcohol dehydrogenase 1B (ADH1B) is protective in people of European and Asian descent, and a different functional variant in the same gene is protective in those of African descent. A strongly protective variant in aldehyde dehydrogenase 2 (ALDH2) is essentially only found in Asians. This highlights the need to study a wide range of populations. The likely mechanism of protection against heavy drinking and AUDs in both cases is alteration in the rate of metabolism of EtOH that at least transiently elevates acetaldehyde. Other ADH and ALDH variants, including functional variations in ADH1C, have also been implicated in affecting drinking behavior and risk for alcoholism. The pattern of linkage disequilibrium in the ADH region and the differences among populations complicate analyses, particularly of regulatory variants. This critical review focuses upon the ADH and ALDH genes as they affect AUDs.
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Affiliation(s)
- Howard J. Edenberg
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN
| | - Jeanette N. McClintick
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN
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Yokoyama A, Taniki N, Hara S, Haysashi E, Nakamoto N, Mizukami T, Maruyama K, Yokoyama T. Slow-metabolizing ADH1B and inactive heterozygous ALDH2 increase vulnerability to fatty liver in Japanese men with alcohol dependence. J Gastroenterol 2018; 53:660-669. [PMID: 29063269 DOI: 10.1007/s00535-017-1402-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 10/10/2017] [Indexed: 02/04/2023]
Abstract
BACKGROUND Genetic polymorphisms of alcohol dehydrogenase-1B (ADH1B; rs1229984, His48Arg) and aldehyde dehydrogenase-2 (ALDH2; rs671, Glu504Lys) affect body weight, body fat, and lipid metabolism in individuals with alcohol dependence, and the aim of this study was to identify their determinants in relation to the development of fatty liver. METHODS We evaluated associations between the presence of fatty liver and ADH1B and ALDH2 genotypes and other factors in 1604 Japanese men who had been admitted for treatment of alcohol dependence. RESULTS Fatty liver was diagnosed when ultrasonography showed both hepatorenal contrast and liver brightness. Age-adjusted usual alcohol intake did not differ according to ADH1B or ALDH2 genotypes. A multivariate analysis showed that the adjusted odds ratio (OR, 95% confidence interval) of slow-metabolizing ADH1B Arg/Arg carriers was 1.61 (1.27-2.03) for fatty liver and 1.82 (1.37-2.41) for fatty liver with deep attenuation in comparison with the ADH1B His/Arg or His/His carriers, and that the OR of inactive heterozygous ALDH2 Glu/Lys carriers was 1.43 (1.08-1.91) for fatty liver and 1.84 (1.31-2.59) for fatty liver with deep attenuation in comparison with the ALDH2 Glu/Glu carriers. Younger age, shorter interval between the last drink and the ultrasound examination, larger body mass index, and absence of cirrhosis were identified as other positive determinants for fatty liver. CONCLUSIONS The ADH1B Arg/Arg genotype and the ALDH2 Glu/Lys genotype were positive determinants of fatty liver in the subjects. These results suggest that slow ethanol and acetaldehyde metabolism accelerates the development of alcoholic fatty liver in heavy drinkers.
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Affiliation(s)
- Akira Yokoyama
- National Hospital Organization Kurihama Medical and Addiction Center, 5-3-1 Nobi, Yokosuka, Kanagawa, 239-0841, Japan.
| | - Nobuhito Taniki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan
| | - Sachiko Hara
- National Hospital Organization Kurihama Medical and Addiction Center, 5-3-1 Nobi, Yokosuka, Kanagawa, 239-0841, Japan
| | - Emiko Haysashi
- National Hospital Organization Kurihama Medical and Addiction Center, 5-3-1 Nobi, Yokosuka, Kanagawa, 239-0841, Japan
| | - Nobuhiro Nakamoto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan
| | - Takeshi Mizukami
- National Hospital Organization Kurihama Medical and Addiction Center, 5-3-1 Nobi, Yokosuka, Kanagawa, 239-0841, Japan
| | - Katsuya Maruyama
- National Hospital Organization Kurihama Medical and Addiction Center, 5-3-1 Nobi, Yokosuka, Kanagawa, 239-0841, Japan
| | - Tetsuji Yokoyama
- Department of Health Promotion, National Institute of Public Health, 2-3-6 Minami, Wako, Saitama, 351-0104, Japan
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15
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Aghdassi AA, Schneider A, Kahl M, Schütte K, Kuliaviene I, Salacone P, Lutz J, Tukiainen E, Simon P, Schauer B, Uomo G, Hauge T, Ceyhan GO. Analysis of lifestyle factors in patients with concomitant chronic pancreatitis and liver cirrhosis. Pancreatology 2017; 17:698-705. [PMID: 28784575 DOI: 10.1016/j.pan.2017.07.194] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 07/26/2017] [Accepted: 07/30/2017] [Indexed: 12/11/2022]
Abstract
BACKGROUND & OBJECTIVES Chronic pancreatitis (CP) and liver cirrhosis (LC) are common gastroenterological disorders but their co-incidence is considered to be rare. This study was designed to identify lifestyle factors that are associated with the development of concomitant LC in patients with CP. METHODS In a retrospective case-control study between 2000 and 2005 122 patients with both CP and LC and 223 matched control patients with CP and no known liver disease were identified in 11 European university medical centers. Another 24 patients and 48 CP controls were identified in the period between 2006 and 2012. RESULTS Alcoholism was most commonly regarded as aetiology for both CP (82.2%; 95% confidence interval (CI): 75.0-88.0%) and LC (79.5%; 95% CI: 72.0-85.7%) as compared to controls with CP only (68.6%; 95% CI: 62.7-74.1%). The preferred type of alcoholic beverage and pattern of alcohol intake were the only significant lifestyle factors in multivariate analysis. Frequency of alcohol intake (p = 0.105) and smoking status (p = 0.099) were not significant in bivariate analysis and dropped out of the multivariate model. Recurrent and chronic pancreatic pain was observed more often in patients with only CP, whereas gallstones were more common in individuals with both chronic disorders. CONCLUSIONS These findings indicate that certain lifestyle factors might be important for the development of concomitant CP and LC. More studies will be needed to identify additional genetic and environmental factors underlying this association.
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Affiliation(s)
- Ali A Aghdassi
- Department of Medicine A, University Medicine Greifswald, Greifswald, Germany.
| | - Alexander Schneider
- Department of Medicine II, University Medical Center Mannheim, University of Heidelberg, Mannheim, Germany
| | - Matthias Kahl
- Israelitisches Krankenhaus Hamburg, Hamburg, Germany
| | - Kerstin Schütte
- Department of Gastroenterology, Hepatology and Infectious Diseases, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Irma Kuliaviene
- Department of Gastroenterology, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | | | - Jon Lutz
- Department of Surgery, Inselspital Bern, Bern, Switzerland
| | - Eija Tukiainen
- Department of Surgery, Helsinki University Central Hospital, Helsinki, Finland
| | - Peter Simon
- Department of Medicine A, University Medicine Greifswald, Greifswald, Germany
| | - Birgit Schauer
- Institute of Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Generoso Uomo
- Department of Internal Medicine, Cardarelli Hospital, Naples, Italy
| | - Truls Hauge
- Department of Gastroenterology, Oslo University Hospital, Oslo, Norway
| | - Güralp O Ceyhan
- Department of Surgery, Technical University of Munich, Munich, Germany
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16
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Ong HH, Khor FV, Balasupramaniam K, Say YH. Genetic polymorphisms of alcohol-metabolizing enzymes and their association with alcoholism risk, personality and anthropometric traits among Malaysian university students. PSYCHOL HEALTH MED 2017; 23:160-170. [DOI: 10.1080/13548506.2017.1338737] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Hing-Huat Ong
- Faculty of Science, Department of Biomedical Science, Universiti Tunku Abdul Rahman (UTAR) Kampar Campus, Kampar, Malaysia
| | - Foong-Vai Khor
- Faculty of Science, Department of Biomedical Science, Universiti Tunku Abdul Rahman (UTAR) Kampar Campus, Kampar, Malaysia
| | - Kausalyah Balasupramaniam
- Faculty of Science, Department of Biomedical Science, Universiti Tunku Abdul Rahman (UTAR) Kampar Campus, Kampar, Malaysia
| | - Yee-How Say
- Faculty of Science, Department of Biomedical Science, Universiti Tunku Abdul Rahman (UTAR) Kampar Campus, Kampar, Malaysia
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Fung P, Pyrsopoulos N. Emerging concepts in alcoholic hepatitis. World J Hepatol 2017; 9:567-585. [PMID: 28515843 PMCID: PMC5411952 DOI: 10.4254/wjh.v9.i12.567] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 02/21/2017] [Accepted: 03/12/2017] [Indexed: 02/06/2023] Open
Abstract
Severe alcoholic hepatitis is implicated as a costly, worldwide public health issue with high morbidity and mortality. The one-month survival for severe alcoholic hepatitis is low with mortality rates high as 30%-50%. Abstinence from alcohol is the recommended first-line treatment. Although corticosteroids remain as the current evidence based option for selected patients with discriminant function > 32, improvement of short-term survival rate may be the only benefit. Identification of individuals with risk factors for the development of severe alcoholic hepatitis may provide insight to the diverse clinical spectrum and prognosis of the disease. The understanding of the complex pathophysiologic processes of alcoholic hepatitis is the key to elucidating new therapeutic treatments. Newer research describes the use of gut microbiota modification, immune modulation, stimulation of liver regeneration, caspase inhibitors, farnesoid X receptors, and the extracorporeal liver assist device to aid in hepatocellular recovery. Liver transplantation can be considered as the last medical option for patients failing conventional medical interventions. Although the preliminary data is promising in patients with low risk of recividism, controversy remains due to organ scarcity. This review article comprehensively summarizes the epidemiology, pathophysiology, risk factors, and prognostic indicators of severe alcoholic hepatitis with a focus on the current and emerging therapeutics.
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Affiliation(s)
- Phoenix Fung
- Phoenix Fung, Nikolaos Pyrsopoulos, Department of Medicine, Division of Gastroenterology and Hepatology, Rutgers New Jersey Medical School, Newark, NJ 07103, United States
| | - Nikolaos Pyrsopoulos
- Phoenix Fung, Nikolaos Pyrsopoulos, Department of Medicine, Division of Gastroenterology and Hepatology, Rutgers New Jersey Medical School, Newark, NJ 07103, United States
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Stickel F, Moreno C, Hampe J, Morgan MY. The genetics of alcohol dependence and alcohol-related liver disease. J Hepatol 2017; 66:195-211. [PMID: 27575312 DOI: 10.1016/j.jhep.2016.08.011] [Citation(s) in RCA: 100] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 08/15/2016] [Accepted: 08/16/2016] [Indexed: 12/19/2022]
Abstract
The susceptibility to developing alcohol dependence and significant alcohol-related liver injury is determined by a number of constitutional, environmental and genetic factors, although the nature and level of interplay between them remains unclear. The familiality and heritability of alcohol dependence is well-documented but, to date, no strong candidate genes conferring increased risk have emerged, although variants in alcohol dehydrogenase and acetaldehyde dehydrogenase have been shown to confer protection, predominantly in individuals of East Asian ancestry. Population contamination with confounders such as drug co-dependence and psychiatric and physical co-morbidity may explain the essentially negative genome-wide association studies in this disorder. The familiality and hereditability of alcohol-related cirrhosis is not as well-documented but three strong candidate genes PNPLA3, TM6SF2 and MBOAT7, have been identified. The mechanisms by which variants in these genes confer risk and the nature of the functional interplay between them remains to be determined but, when elucidated, will undoubtedly increase our understanding of the pathophysiology of this disease. The way in which this genetic information could potentially inform patient management has yet to be determined and tested.
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Affiliation(s)
- Felix Stickel
- Department of Gastroenterology and Hepatology, University Hospital of Zurich, Switzerland.
| | - Christophe Moreno
- Department of Gastroenterology, Hepatopancreatology and Digestive Oncology, CUB Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium; Laboratory of Experimental Gastroenterology, Université Libre de Bruxelles, Brussels, Belgium
| | - Jochen Hampe
- Medical Department 1, University Hospital Dresden, TU Dresden, Germany
| | - Marsha Y Morgan
- UCL Institute for Liver & Digestive Health, Division of Medicine, Royal Free Campus, University College London, UK
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Wang M, Zhou Z, Wang J, Zhang X. An improved in vitro method for screening toxin and medicine targeting CYP2E1. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2016; 47:86-91. [PMID: 27653210 DOI: 10.1016/j.etap.2016.09.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 09/10/2016] [Accepted: 09/13/2016] [Indexed: 06/06/2023]
Abstract
The cytochrome P450 enzyme 2E1 (CYP2E1) presents in both microsome and mitochondrion, which influences the metabolism of many xenobiotics. The mice active liver homogenate was prepared for the medicinal incubation and mitochondrion was extracted for chemical screening targeting CYP2E1 enzyme. Representative CYP2E1 inducers (ethanol and pyrazole) and inhibitors (diallyldisulfide and kaempferol) were applied to evaluate the effectiveness of homogenate-mitochondrial system. In parallel, the in-vitro microsomal method targeting CYP2E1 was also operated for comparison. The results showed that in homogenate-mitochondrial method, the protein level and activity of CYP2E1 were increased by ethanol and pyrazole; reduced by diallyldisulfide and kaempferol, and this homogenate-mitochondrial method is convenient with good repeatability and reproducibility in screening chemicals targeting CYP2E1, especially for the inducers. Thus, the homogenate-mitochondrial method might be effective in screening both CYP2E1 inhibitor and inducer.
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Affiliation(s)
- Meng Wang
- Chinese-German Joint Laboratory for Natural Product Research, Qinling-Bashan Mountains Bioresources Comprehensive Development C.I.C., College of Biological Science and Engineering, Shaanxi Sci-tech University, Hanzhong, Shaanxi 723000, China; College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Zhaoxiang Zhou
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Jian Wang
- Chinese-German Joint Laboratory for Natural Product Research, Qinling-Bashan Mountains Bioresources Comprehensive Development C.I.C., College of Biological Science and Engineering, Shaanxi Sci-tech University, Hanzhong, Shaanxi 723000, China
| | - Xiaoying Zhang
- Chinese-German Joint Laboratory for Natural Product Research, Qinling-Bashan Mountains Bioresources Comprehensive Development C.I.C., College of Biological Science and Engineering, Shaanxi Sci-tech University, Hanzhong, Shaanxi 723000, China; College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China.
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Joshi K, Kohli A, Manch R, Gish R. Alcoholic Liver Disease: High Risk or Low Risk for Developing Hepatocellular Carcinoma? Clin Liver Dis 2016; 20:563-80. [PMID: 27373617 DOI: 10.1016/j.cld.2016.02.012] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
In this review we critically assess the literature to evaluate the level of risk posed by alcohol as both a primary etiology of hepatocellular carcinoma (HCC) and as a cofactor in its development. Although there have been conflicting findings, based on the body of evidence to date, it appears that the linkage between compensated alcoholic liver disease-associated cirrhosis and HCC is best characterized as medium-high risk, with the risk increasing with age and with quantity and duration of alcohol consumption and is more pronounced in females. While abstinence is the most effective way to reduce HCC risk, its effect seems largely dependent on the severity of liver damage at the point of cessation. Alcohol clearly interacts with other etiologies and conditions including viral hepatitis B and C, hereditary hemochromatosis, diabetes, and obesity to increase the risk for developing HCC, either synergistically or additively. Continued progress in genetics, especially through mechanistic-based and genome-wide association studies may ultimately identify which single nucleotide polymorphisms are risk factors for the onset of alcoholic liver disease and its progression to HCC and lead to the development of targeted therapeutics which may help providers better manage at-risk patients.
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Affiliation(s)
- Kartik Joshi
- Division of Hepatology, St. Joseph's Hospital and Medical Center, Creighton University School of Medicine, 500 West Thomas Road, Suite 900, Phoenix, AZ 85013, USA
| | - Anita Kohli
- Division of Hepatology, St. Joseph's Hospital and Medical Center, Creighton University School of Medicine, 500 West Thomas Road, Suite 900, Phoenix, AZ 85013, USA; Division of Infectious Disease, St. Joseph's Hospital and Medical Center, Creighton University School of Medicine, 500 West Thomas Road, Suite 900, Phoenix, AZ 85013, USA
| | - Richard Manch
- Division of Hepatology, St. Joseph's Hospital and Medical Center, Creighton University School of Medicine, 500 West Thomas Road, Suite 900, Phoenix, AZ 85013, USA
| | - Robert Gish
- Division of Hepatology, St. Joseph's Hospital and Medical Center, Creighton University School of Medicine, 500 West Thomas Road, Suite 900, Phoenix, AZ 85013, USA; Division of Hepatology and Gastroenterology, Stanford University Hospitals and Clinics, 300 Pasteur Drive, Palo Alto, CA 94304, USA.
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21
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Mehal W, To U. New approaches for fibrosis regression in alcoholic cirrhosis. Hepatol Int 2016; 10:773-8. [PMID: 27460408 DOI: 10.1007/s12072-016-9752-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Accepted: 06/21/2016] [Indexed: 01/18/2023]
Abstract
Liver fibrosis is a dynamic process of fibrinogenesis and fibrinolysis. It is sequelae of recurrent injury and inflammation to the liver. Only recently has there been significant progress in understanding the pathophysiology behind liver fibrosis. This has allowed for the development of identifiable targets for potential therapies. In this article we will discuss the underlying general cellular mechanisms that play a key role in the pathway of fibrinogenesis and fibrinolysis and then focus on the mechanisms that are key in alcohol-induced liver fibrosis. Challenges in formulating potential fibrosis therapies as well as current potential targets for liver fibrosis will be reviewed as well.
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Affiliation(s)
- Wajahat Mehal
- Section of Digestive Diseases, Department of Veterans Affairs Connecticut Healthcare, West Haven, CT, 06516, USA. .,Section of Digestive Diseases, Department of Internal Medicine, Yale University, New Haven, CT, 06520, USA.
| | - Uyen To
- Section of Digestive Diseases, Department of Internal Medicine, Yale University, New Haven, CT, 06520, USA
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22
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He L, Deng T, Luo H. Aldehyde Dehydrogenase 2 (ALDH2) Polymorphism and the Risk of Alcoholic Liver Cirrhosis among East Asians: A Meta-Analysis. Yonsei Med J 2016; 57:879-84. [PMID: 27189280 PMCID: PMC4951463 DOI: 10.3349/ymj.2016.57.4.879] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 05/19/2015] [Accepted: 05/31/2015] [Indexed: 12/20/2022] Open
Abstract
PURPOSE The aldehyde dehydrogenase 2 (ALDH2) gene has been implicated in the development of alcoholic liver cirrhosis (ALC) in East Asians. However, the results are inconsistent. In this study, a meta-analysis was performed to assess the associations between the ALDH2 polymorphism and the risk of ALC. MATERIALS AND METHODS Relevant studies were retrieved by searching PubMed, Web of Science, CNKI, Wanfang and Veipu databases up to January 10, 2015. Pooled odds ratio (OR) and 95% confidence interval (CI) were calculated using either the fixed- or random effects model. RESULTS A total of twelve case-control studies included 1003 cases and 2011 controls were included. Overall, the ALDH2 polymorphism was associated with a decreased risk of ALC (*1/*2 vs. *1/*1: OR=0.78, 95% CI: 0.61-0.99). However, in stratification analysis by country, we failed to detect any association among Chinese, Korean or Japanese populations. CONCLUSION The pooled evidence suggests that ALDH2 polymorphism may be an important protective factor for ALC in East Asians.
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Affiliation(s)
- Lei He
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Tao Deng
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China.
| | - Hesheng Luo
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
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Fengler VHI, Macheiner T, Kessler SM, Czepukojc B, Gemperlein K, Müller R, Kiemer AK, Magnes C, Haybaeck J, Lackner C, Sargsyan K. Susceptibility of Different Mouse Wild Type Strains to Develop Diet-Induced NAFLD/AFLD-Associated Liver Disease. PLoS One 2016; 11:e0155163. [PMID: 27167736 PMCID: PMC4863973 DOI: 10.1371/journal.pone.0155163] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Accepted: 04/25/2016] [Indexed: 12/17/2022] Open
Abstract
Although non-alcoholic and alcoholic fatty liver disease have been intensively studied, concerning pathophysiological mechanisms are still incompletely understood. This may be due to the use of different animal models and resulting model-associated variation. Therefore, this study aimed to compare three frequently used wild type mouse strains in their susceptibility to develop diet-induced features of non-alcoholic/alcoholic fatty liver disease. Fatty liver disease associated clinical, biochemical, and histological features in C57BL/6, CD-1, and 129Sv WT mice were induced by (i) high-fat diet feeding, (ii) ethanol feeding only, and (iii) the combination of high-fat diet and ethanol feeding. Hepatic and subcutaneous adipose lipid profiles were compared in CD-1 and 129Sv mice. Additionally hepatic fatty acid composition was determined in 129Sv mice. In C57BL/6 mice dietary regimens resulted in heterogeneous hepatic responses, ranging from pronounced steatosis and inflammation to a lack of any features of fatty liver disease. Liver-related serum biochemistry showed high deviations within the regimen groups. CD-1 mice did not exhibit significant changes in metabolic and liver markers and developed no significant steatosis or inflammation as a response to dietary regimens. Although 129Sv mice showed no weight gain, this strain achieved most consistent features of fatty liver disease, apparent from concentration alterations of liver-related serum biochemistry as well as moderate steatosis and inflammation as a result of all dietary regimens. Furthermore, the hepatic lipid profile as well as the fatty acid composition of 129Sv mice were considerably altered, upon feeding the different dietary regimens. Accordingly, diet-induced non-alcoholic/alcoholic fatty liver disease is most consistently promoted in 129Sv mice compared to C57BL/6 and CD-1 mice. As a conclusion, this study demonstrates the importance of genetic background of used mouse strains for modeling diet-induced non-alcoholic/alcoholic fatty liver disease.
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MESH Headings
- Alanine Transaminase/metabolism
- Animals
- Aspartate Aminotransferases/metabolism
- Biomarkers/metabolism
- Cholesterol/metabolism
- Diet, High-Fat/adverse effects
- Dietary Fats/administration & dosage
- Disease Models, Animal
- Disease Susceptibility
- Ethanol/administration & dosage
- Fatty Acids, Nonesterified/metabolism
- Fatty Liver, Alcoholic/etiology
- Fatty Liver, Alcoholic/genetics
- Fatty Liver, Alcoholic/metabolism
- Fatty Liver, Alcoholic/pathology
- Liver/metabolism
- Liver/pathology
- Liver Function Tests
- Male
- Mice
- Mice, 129 Strain
- Mice, Inbred C57BL
- Mice, Inbred Strains
- Non-alcoholic Fatty Liver Disease/etiology
- Non-alcoholic Fatty Liver Disease/genetics
- Non-alcoholic Fatty Liver Disease/metabolism
- Non-alcoholic Fatty Liver Disease/pathology
- Species Specificity
- Subcutaneous Fat/metabolism
- Subcutaneous Fat/pathology
- Triglycerides/metabolism
- Weight Gain
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Affiliation(s)
| | - Tanja Macheiner
- BioPersMed/Biobank Graz, Medical University of Graz, Graz, Austria
| | - Sonja M. Kessler
- Department of Pharmacy, Pharmaceutical Biology, Saarland University, Saarbrücken, Germany
| | - Beate Czepukojc
- Department of Pharmacy, Pharmaceutical Biology, Saarland University, Saarbrücken, Germany
| | - Katja Gemperlein
- Department of Pharmacy, Pharmaceutical Biotechnology, Saarland University, Saarbrücken, Germany
- Department of Microbial Natural Products, Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research and Pharmaceutical Biotechnology (HZI), Saarbrücken, Germany
| | - Rolf Müller
- Department of Pharmacy, Pharmaceutical Biotechnology, Saarland University, Saarbrücken, Germany
- Department of Microbial Natural Products, Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research and Pharmaceutical Biotechnology (HZI), Saarbrücken, Germany
| | - Alexandra K. Kiemer
- Department of Pharmacy, Pharmaceutical Biology, Saarland University, Saarbrücken, Germany
| | - Christoph Magnes
- Institute for Biomedicine and Health Sciences, Joanneum Research, Graz, Austria
| | | | - Carolin Lackner
- Institute of Pathology, Medical University of Graz, Graz, Austria
| | - Karine Sargsyan
- BioPersMed/Biobank Graz, Medical University of Graz, Graz, Austria
- * E-mail:
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24
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Matsumoto A, Thompson D, Chen Y, Vasiliou V, Kawamoto T, Ichiba M. Heme oxygenase 1 protects ethanol-administered liver tissue in Aldh2 knockout mice. Alcohol 2016; 52:49-54. [PMID: 27139237 DOI: 10.1016/j.alcohol.2016.02.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 12/14/2015] [Accepted: 02/18/2016] [Indexed: 12/20/2022]
Abstract
A genetic polymorphism of the aldehyde dehydrogenase 2 (ALDH2) gene, ALDH2*2, encodes an enzymatically defective ALDH2 protein. Recent epidemiological studies suggest that possessing ALDH2*2 is a protective factor for liver tissue in healthy individuals, although these studies lack a mechanistic explanation. Our animal studies have shown the same trend: levels of serum alanine transaminase (ALT), hepatic malondialdehyde (MDA), and hepatic tumor necrosis factor alpha (TNF-α) were lower in Aldh2 knockout (Aldh2(-/-)) mice than in wild-type (Aldh2(+/+)) mice after ethanol administration. To propose a mechanistic hypothesis, residual liver specimens from the previous experiment were analyzed. An anti-oxidative protein, heme oxygenase 1 (HO-1), and an oxidative stress-producing protein, cytochrome P450 2E1 (CYP2E1), were detected at higher levels in Aldh2(-/-) mice than in Aldh2(+/+) mice, regardless of ethanol treatment. Other oxidative stress-related proteins and inflammatory cytokines did not show such a significant difference. To conclude, we propose a protective role of HO-1 in individuals with ALDH2*2. Our continued studies support the epidemiological finding that possession of ALDH2*2 is a protective factor in the liver of the healthy individual.
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Affiliation(s)
- Akiko Matsumoto
- Department of Social Medicine, Saga University School of Medicine, 5-1-1 Nabeshima, Saga 849-8501, Japan.
| | - David Thompson
- Department of Clinical Pharmacy, University of Colorado School of Pharmacy, 12850 E. Montview Blvd., Aurora, CO 80045, USA
| | - Ying Chen
- Department of Pharmaceutical Sciences, University of Colorado School of Pharmacy, Aurora, CO 80045, USA
| | - Vasilis Vasiliou
- Department of Pharmaceutical Sciences, University of Colorado School of Pharmacy, Aurora, CO 80045, USA
| | - Toshihiro Kawamoto
- Department of Environmental Health, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi, Kitakyushu, Fukuoka 807-0804, Japan
| | - Masayoshi Ichiba
- Department of Social Medicine, Saga University School of Medicine, 5-1-1 Nabeshima, Saga 849-8501, Japan
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25
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Abstract
Alcoholic liver disease (ALD) is a leading cause of liver-related morbidity and mortality worldwide. ALD encompasses a spectrum of disorders including asymptomatic steatosis, steatohepatitis, fibrosis, cirrhosis and its related complications, and the acute-on-chronic state of alcoholic hepatitis. While multidisciplinary efforts continue to be aimed at curbing progression of this spectrum of disorders, there is an urgent need to focus our efforts on effective therapeutic interventions for alcoholic hepatitis (AH), the most severe form of ALD. AH is characterized by an abrupt development of jaundice and complications related to liver insufficiency and portal hypertension in patients with heavy alcohol intake. The mortality of patients with severe AH is very high (20-50 % at 3 months). The current therapeutic regimens are limited. The development of new therapies requires translational studies in human samples and suitable animal models that reproduce clinical and histological features of human AH. This review article summarizes the clinical syndrome, pre-clinical translational tools, and pathogenesis of AH at a molecular and cellular level, with the aim of identifying new targets of potential therapeutic intervention.
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26
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Masaoka H, Ito H, Soga N, Hosono S, Oze I, Watanabe M, Tanaka H, Yokomizo A, Hayashi N, Eto M, Matsuo K. Aldehyde dehydrogenase 2 (ALDH2) and alcohol dehydrogenase 1B (ADH1B) polymorphisms exacerbate bladder cancer risk associated with alcohol drinking: gene-environment interaction. Carcinogenesis 2016; 37:583-588. [PMID: 26992901 DOI: 10.1093/carcin/bgw033] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Accepted: 03/12/2016] [Indexed: 12/20/2022] Open
Abstract
Although a range of chemical exposures (cigarette smoking and occupational exposure) are recognized risk factors for the development of bladder cancer (BCa), many epidemiological studies have demonstrated that alcohol drinking is not associated with BCa risk. Aldehyde dehydrogenase 2 (ALDH2; rs671, Glu504Lys) and alcohol dehydrogenase 1B (ADH1B; rs1229984, His47Arg) polymorphisms impact the accumulation of acetaldehyde, resulting in an increased risk of various cancers. To date, however, no studies evaluating the association between BCa risk and alcohol drinking have considered these polymorphisms. Here, we conducted a matched case-control study to investigate whether ALDH2 and ADH1B polymorphisms influence BCa risk associated with alcohol drinking. Cases were 74 BCa patients and controls were 740 first-visit outpatients without cancer at Aichi Cancer Center Hospital between January 2001 and December 2005. Odds ratio (OR), 95% confidence interval (CI) and gene-environment interaction were assessed by conditional logistic regression analysis with adjustment for potential confounders. Results showed that ALDH2 Glu/Lys was associated with a significantly increased risk of BCa compared with Glu/Glu (OR 2.03, 95% CI 1.14-3.62, P = 0.017). In contrast, ALDH2 Glu/Lys showed no increase in risk among the stratum of never drinkers compared with Glu/Glu, indicating a gene-environment interaction. ADH1B His/Arg had an OR of 1.98 (1.20-3.24, P = 0.007) compared with His/His. ADH1B Arg+ showed a similar OR and 95% CI. Individuals with ALDH2 Glu/Lys and ADH1B Arg+ had the highest risk of BCa compared with ALDH2 Glu/Glu and ADH1B His/His [OR 4.00 (1.81-8.87), P = 0.001].
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Affiliation(s)
- Hiroyuki Masaoka
- Division of Molecular Medicine, Aichi Cancer Center Research Institute, Nagoya 464-8681, Japan.,Department of Urology, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Hidemi Ito
- Division of Epidemiology and Prevention, Aichi Cancer Center Research Institute, Nagoya 464-8681, Japan.,Department of Epidemiology, Nagoya University Graduate School of Medicine, Nagoya 466-0065, Japan and
| | - Norihito Soga
- Department of Urology, Aichi Cancer Center Hospital, Nagoya 464-8681, Japan
| | - Satoyo Hosono
- Division of Epidemiology and Prevention, Aichi Cancer Center Research Institute, Nagoya 464-8681, Japan
| | - Isao Oze
- Division of Epidemiology and Prevention, Aichi Cancer Center Research Institute, Nagoya 464-8681, Japan
| | - Miki Watanabe
- Division of Epidemiology and Prevention, Aichi Cancer Center Research Institute, Nagoya 464-8681, Japan
| | - Hideo Tanaka
- Division of Epidemiology and Prevention, Aichi Cancer Center Research Institute, Nagoya 464-8681, Japan.,Department of Epidemiology, Nagoya University Graduate School of Medicine, Nagoya 466-0065, Japan and
| | - Akira Yokomizo
- Department of Urology, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Norio Hayashi
- Department of Urology, Aichi Cancer Center Hospital, Nagoya 464-8681, Japan
| | - Masatoshi Eto
- Department of Urology, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Keitaro Matsuo
- Division of Molecular Medicine, Aichi Cancer Center Research Institute, Nagoya 464-8681, Japan.,Department of Epidemiology, Nagoya University Graduate School of Medicine, Nagoya 466-0065, Japan and
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27
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Roy N, Dasgupta D, Mukhopadhyay I, Chatterjee A, Das K, Bhowmik P, Das S, Basu P, Santra AK, Datta S, Dhali GK, Chowdhury A, Banerjee S. Genetic Association and Gene-Gene Interaction Reveal Genetic Variations in ADH1B, GSTM1 and MnSOD Independently Confer Risk to Alcoholic Liver Diseases in India. PLoS One 2016; 11:e0149843. [PMID: 26937962 PMCID: PMC4777485 DOI: 10.1371/journal.pone.0149843] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 02/05/2016] [Indexed: 02/07/2023] Open
Abstract
Genetic susceptibility is an important modifier of clinical outcome and natural history of progression in Alcoholic liver disease (ALD). While the significance of ethnicity in this evolution is very clear, subtle inter-individual genetic variant(s) might be important and thus we investigated those in an Indian population. Fourteen markers were genotyped within two alcohol metabolism genes [Alcohol dehydrogenase (ADH) gene clusters (ADH1B and ADH1C) and Aldehyde dehydrogenase (ALDH2)], one microsomal ethanol oxidizing enzyme cytochrome p450 (CYP2E1) and three oxidative stress response (OSR) genes (MnSOD, GSTT1 and GSTM1) among 490 Bengali individuals (322 ALD and 168 control) from Eastern and North-Eastern India and validation was performed in a new cohort of 150 Bengali patients including 100 ALD and 50 advanced non-alcoholic steatohepatitis (NASH). Out of 14 genetic variants, carriage of 5 genotypes (rs2066701CC in ADH1B, rs1693425TT in ADH1C, rs4880TT in MnSOD and GSTT1/GSTM1 null, p-value <0.05) were noted significantly higher among ALD patients while inter or intra group gene-gene interaction analysis revealed that addition of risk genotype of any OSR gene enhanced the possibility of ALD synergistically. Multiple logistic regression analysis showed independent association of rs2066701CC, rs4880TT and GSTM1 null genotype with ALD while lower frequencies of those genotypes in advanced NASH patients further confirmed their causal relation to ALD. Thus these findings suggest that the three variants of ADH1C, MnSOD and GSTM1 can be used to identify individuals who are at high risk to develop ALD and may be helpful in proper management of Indian alcoholics.
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Affiliation(s)
- Neelanjana Roy
- Center for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, West Bengal, India
| | - Debanjali Dasgupta
- Center for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, West Bengal, India
| | | | | | - Kausik Das
- Department of Hepatology, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, West Bengal, India
| | - Pradip Bhowmik
- Agartala Government Medical College, Agartala, Tripura, India
| | - Soumyajit Das
- Center for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, West Bengal, India
| | | | - Amal K. Santra
- Center for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, West Bengal, India
| | - Simanti Datta
- Center for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, West Bengal, India
| | - Gopal Krishna Dhali
- Department of Gastroenterology, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, India
| | - Abhijit Chowdhury
- Department of Hepatology, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, West Bengal, India
| | - Soma Banerjee
- Center for Liver Research, School of Digestive and Liver Diseases, Institute of Post Graduate Medical Education and Research, Kolkata, West Bengal, India
- * E-mail:
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28
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Rosato V, Abenavoli L, Federico A, Masarone M, Persico M. Pharmacotherapy of alcoholic liver disease in clinical practice. Int J Clin Pract 2016; 70:119-31. [PMID: 26709723 DOI: 10.1111/ijcp.12764] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
AIMS Alcohol is the most commonly used addictive substance and alcoholic liver disease (ALD) is a major cause of chronic liver disease worldwide, responsible for 47.9% of all liver chronic deaths. Despite ALD has a significant burden on the health, few therapeutic advances have been made in the last 40 years, particularly in the long-term management of these patients. METHODS we searched in PubMed, Scopus, Google Scholar, and MEDLINE databases to identify relevant English language publications focused on long-term therapy of ALD. RESULTS From the huge literature on this topic, including about 755 studies, 75 were selected as eligible including clinical trials and meta-analysis. CONCLUSIONS Abstinence remains the cornerstone of ALD therapy but it is also the most difficult therapeutic target to achieve and the risk of recidivism is very high at any time. Several drugs (disulfiram, naltrexone, acamprosate, sodium oxybate) have proven to be effective to prevent alcohol relapse and increase the abstinence, although the psychotherapeutic support remains crucial. Baclofen seems to be effective to improve abstinence, showing an excellent safety and tolerability. ALD is often complicated by a state of malnutrition, which is related to a worst mortality. A nutritional therapy may improve survival in cirrhotic patients, reversing muscle wasting, weight loss and specific nutritional deficiencies. While in aggressive forms of alcoholic hepatitis are recommended specific drug treatments, including glucocorticoids or pentoxifylline, for the long-term treatment of ALD, specific treatments aimed at stopping the progression of fibrosis are not yet approved, but there are some future perspective in this field, including probiotics and antibiotics, caspase inhibitors, osteopontin and endocannabinoids.
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Affiliation(s)
- V Rosato
- Internal Medicine and Hepatology Department, Second University of Naples, Naples, Italy
| | - L Abenavoli
- Department of Health Science, University Magna Graecia, Catanzaro, Italy
| | - A Federico
- Gastroenterology and Endoscopy Unit, Second University of Naples, Naples, Italy
| | - M Masarone
- Internal Medicine and Hepatology Unit, University of Salerno, Baronissi, Italy
| | - M Persico
- Internal Medicine and Hepatology Unit, University of Salerno, Baronissi, Italy
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29
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Hashimoto M, Watanabe M, Uematsu Y, Hattori S, Miyai N, Utsumi M, Oka M, Hayashida M, Kinoshita K, Arita M, Takeshita T. Relationships of alcohol dehydrogenase 1B (ADH1B) and aldehyde dehydrogenase 2 (ALDH2) genotypes with alcohol sensitivity, drinking behavior and problem drinking in Japanese older men. Environ Health Prev Med 2016; 21:138-48. [PMID: 26825972 DOI: 10.1007/s12199-016-0507-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Accepted: 01/11/2016] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVES Many East Asians have the genetic polymorphisms rs1229984 in alcohol dehydrogenase 1B (ADH1B) and rs671 in aldehyde dehydrogenase 2 (ALDH2). Here we analyzed the relationships of the two genotypes with alcohol sensitivity, drinking behavior and problem drinking among older and younger men living in rural areas of Japan. METHODS The subjects were 718 Japanese men aged 63.3 ± 10.8 (mean ± SD), categorized into the older (≥65 years, n = 357) and younger (<65 years, n = 361) groups. Facial flushing frequency, drinking behavior and positive CAGE results were compared among the genotypes using Bonferroni-corrected χ(2) test and a multivariate logistic regression analysis adjusting for age, BMI and lifestyle factors. RESULTS The frequency of 'always' facial flushing among the ADH1B*1/*2 carriers was significantly lower than that among the ADH1B*2/*2 carriers in the older group (P < 0.01). The alcohol consumption (unit/day) in the ADH1B*1/*2 carriers tended to be higher compared with that in the ADH1B*2/*2 carriers among the older group (P = 0.050). In the younger group, no significant differences in alcohol sensitivity and drinking habits were generally found among the ADH1B genotypes. The ADH1B*1/*1 genotype tended to be positively associated with problem drinking in the older group (P = 0.080) but not in the younger group. The ALDH2 genotypes consistently and strongly affected the alcohol sensitivity, drinking behavior and problem drinking in both the younger and older group. CONCLUSIONS We for the first time observed a significant difference in alcohol sensitivity between ADH1B*1/*2 and ADH1B*2/*2 in older men aged 65 and above.
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Affiliation(s)
- Marowa Hashimoto
- Department of Public Health, School of Medicine, Wakayama Medical University, 811-1 Kimiidera, Wakayama, Wakayama, 641-8509, Japan
| | - Masutaka Watanabe
- Department of Public Health, School of Medicine, Wakayama Medical University, 811-1 Kimiidera, Wakayama, Wakayama, 641-8509, Japan
| | - Yuji Uematsu
- School of Health and Nursing Sciences, Wakayama Medical University, Wakayama, Wakayama, Japan
| | - Sonomi Hattori
- School of Health and Nursing Sciences, Wakayama Medical University, Wakayama, Wakayama, Japan
| | - Nobuyuki Miyai
- School of Health and Nursing Sciences, Wakayama Medical University, Wakayama, Wakayama, Japan
| | - Miyoko Utsumi
- School of Health and Nursing Sciences, Wakayama Medical University, Wakayama, Wakayama, Japan
| | - Mayumi Oka
- School of Health and Nursing Sciences, Wakayama Medical University, Wakayama, Wakayama, Japan
| | - Mariko Hayashida
- School of Pharmaceutical Sciences, Mukogawa Woman's University, Nishinomiya, Hyogo, Japan
| | - Kenji Kinoshita
- School of Pharmaceutical Sciences, Mukogawa Woman's University, Nishinomiya, Hyogo, Japan
| | - Mikio Arita
- School of Health and Nursing Sciences, Wakayama Medical University, Wakayama, Wakayama, Japan
| | - Tatsuya Takeshita
- Department of Public Health, School of Medicine, Wakayama Medical University, 811-1 Kimiidera, Wakayama, Wakayama, 641-8509, Japan.
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30
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Roles of interleukin (IL)-6 gene polymorphisms, serum IL-6 levels, and treatment in obstructive sleep apnea: a meta-analysis. Sleep Breath 2015; 20:719-31. [DOI: 10.1007/s11325-015-1288-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 09/21/2015] [Accepted: 11/02/2015] [Indexed: 12/20/2022]
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31
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A genome-wide association study confirms PNPLA3 and identifies TM6SF2 and MBOAT7 as risk loci for alcohol-related cirrhosis. Nat Genet 2015; 47:1443-8. [PMID: 26482880 DOI: 10.1038/ng.3417] [Citation(s) in RCA: 378] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 09/14/2015] [Indexed: 12/12/2022]
Abstract
Alcohol misuse is the leading cause of cirrhosis and the second most common indication for liver transplantation in the Western world. We performed a genome-wide association study for alcohol-related cirrhosis in individuals of European descent (712 cases and 1,426 controls) with subsequent validation in two independent European cohorts (1,148 cases and 922 controls). We identified variants in the MBOAT7 (P = 1.03 × 10(-9)) and TM6SF2 (P = 7.89 × 10(-10)) genes as new risk loci and confirmed rs738409 in PNPLA3 as an important risk locus for alcohol-related cirrhosis (P = 1.54 × 10(-48)) at a genome-wide level of significance. These three loci have a role in lipid processing, suggesting that lipid turnover is important in the pathogenesis of alcohol-related cirrhosis.
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32
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Williams JA, Ding WX. A Mechanistic Review of Mitophagy and Its Role in Protection against Alcoholic Liver Disease. Biomolecules 2015; 5:2619-42. [PMID: 26501336 PMCID: PMC4693250 DOI: 10.3390/biom5042619] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2015] [Revised: 09/23/2015] [Accepted: 09/25/2015] [Indexed: 12/15/2022] Open
Abstract
Alcoholic liver disease (ALD) is a major health problem worldwide, and alcohol is well-known to cause mitochondrial damage, which exacerbates alcohol-induced liver injury and steatosis. No successful treatments are currently available for treating ALD. Therefore, a better understanding of mechanisms involved in regulation of mitochondrial homeostasis in the liver and how these mechanisms may protect against alcohol-induced liver disease is needed for future development of better therapeutic options for ALD. Mitophagy is a key mechanism for maintaining mitochondrial homeostasis by removing damaged mitochondria, and mitophagy protects against alcohol-induced liver injury. Parkin, an E3 ubiquitin ligase, is well-known to induce mitophagy in in vitro models although Parkin-independent mechanisms for mitophagy induction also exist. In this review, we discuss the roles of Parkin and mitophagy in protection against alcohol-induced liver injury and steatosis. We also discuss Parkin-independent mechanisms for mitophagy induction, which have not yet been evaluated in the liver but may also potentially have a protective role against ALD. In addition to mitophagy, mitochondrial spheroid formation may also provide a novel mechanism of protection against ALD, but the role of mitochondrial spheroids in protection against ALD progression needs to be further explored. Targeting removal of damaged mitochondria by mitophagy or inducing formation of mitochondrial spheroids may be promising therapeutic options for treatment of ALD.
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Affiliation(s)
- Jessica A Williams
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, 3901 Rainbow Blvd., Kansas City, KS 66160, USA.
| | - Wen-Xing Ding
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, 3901 Rainbow Blvd., Kansas City, KS 66160, USA.
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33
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Genetic susceptibility factors for alcohol-induced chronic pancreatitis. Pancreatology 2015; 15:S23-31. [PMID: 26149858 DOI: 10.1016/j.pan.2015.05.476] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 04/10/2015] [Accepted: 05/27/2015] [Indexed: 12/11/2022]
Abstract
Chronic pancreatitis is a progressive inflammatory disease of the pancreas and frequently associated with immoderate alcohol consumption. Since only a small proportion of alcoholics eventually develop chronic pancreatitis genetic susceptibility factors have long been suspected to contribute to the pathogenesis of the disease. Smaller studies in ethnically defined populations have found that not only polymorphism in proteins involved in the metabolism of ethanol, such as Alcohol Dehydrogenase and Aldehyde Dehydrogenase, can confer a risk for developing chronic pancreatitis but also mutations that had previously been reported in association with idiopathic pancreatitis, such as SPINK1 mutations. In a much broader approach employing genome wide search strategies the NAPS study found that polymorphisms in the Trypsin locus (PRSS1 rs10273639), and the Claudin 2 locus (CLDN2-RIPPLY1-MORC4 locus rs7057398 and rs12688220) confer an increased risk of developing alcohol-induced pancreatitis. These results from North America have now been confirmed by a European consortium. In another genome wide approach polymorphisms in the genes encoding Fucosyltransferase 2 (FUT2) non-secretor status and blood group B were not only found in association with higher serum lipase levels in healthy volunteers but also to more than double the risk for developing alcohol-associated chronic pancreatitis. These novel genetic associations will allow to investigate the pathophysiological and biochemical basis of alcohol-induced chronic pancreatitis on a cellular level and in much more detail than previously possible.
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34
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PNPLA3 Gene Polymorphism Is Associated With Predisposition to and Severity of Alcoholic Liver Disease. Am J Gastroenterol 2015; 110:846-56. [PMID: 25964223 DOI: 10.1038/ajg.2015.137] [Citation(s) in RCA: 102] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Accepted: 04/01/2015] [Indexed: 12/11/2022]
Abstract
OBJECTIVES The genetic polymorphism with an isoleucine-to-methionine substitution at position 148 (rs738409 C>G) in the patatin-like phospholipase domain protein 3 (PNPLA3) gene confers risk of steatosis. PNPLA3 polymorphism is shown to be associated with alcoholic liver disease (ALD). We performed a systematic review and meta-analysis to examine association of this genetic polymorphism with ALD spectrum and its severity. METHODS Medline, Embase, and Cochrane Library were searched for studies on association of PNPLA3 polymorphism and ALD spectrum: alcoholic fatty liver (AFL), alcoholic liver injury (ALI), alcoholic cirrhosis (AC), and hepatocellular carcinoma (HCC). Pooled data are reported as odds ratio (OR) with 95% confidence interval. Heterogeneity was assessed using the I(2) statistics and publication bias using Egger's test and Begg and Mazumdar's test. Individual participant data obtained from five studies were used for subgroup analyses. RESULTS Among 10 studies included in this pooled analysis, compared with controls, OR for rs738409 CG and GG among ALI patients was 1.45 (1.24-1.69) and 2.22 (1.50-3.28), respectively, compared with CC. Respective OR among AC patients was 2.09 (1.79-2.44) and 3.37 (2.49-4.58) and among AC patients with HCC was 2.87 (1.61-5.10) and 12.41 (6.99-22.03). Data for AFL were inconsistent. Among ALD patients, OR of CG and GG genotypes was 2.62 (1.73-3.97) and 8.45 (2.52-28.37), respectively, for AC compared with fatty liver (FL) patients. Similar OR for AC compared with ALI was 1.98 (1.24-3.17) and 3.86 (1.18-12.60). The OR for CG and GG genotypes among AC patients for HCC occurrence was 1.43 (0.76-2.72) and 2.81 (1.57-5.01), respectively. Individual participant data analysis showed age to predispose to AC among ALI patients. CONCLUSIONS PNPLA3 genetic polymorphism (rs738409 C>G) is associated with increased risk for the entire spectrum of ALD among drinkers including ALI, AC, and HCC. Studies are needed to clarify association of PNPLA3 polymorphism and steatosis in alcoholics. PNPLA3 gene may potentially be a therapeutic target in ALD.
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Vatansever S, Tekin F, Salman E, Altintoprak E, Coskunol H, Akarca US. Genetic polymorphisms of ADH1B, ADH1C and ALDH2 in Turkish alcoholics: lack of association with alcoholism and alcoholic cirrhosis. Bosn J Basic Med Sci 2015; 15:37-41. [PMID: 26042511 DOI: 10.17305/bjbms.2015.242] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Revised: 12/18/2014] [Accepted: 12/18/2014] [Indexed: 12/20/2022] Open
Abstract
No data exists regarding the alcohol dehydrogenase (ADH) and aldehyde dehydrogenase (ALDH) gene polymorphisms in Turkish alcoholic cirrhotics. We studied the polymorphisms of ADH1B, ADH1C and ALDH2 genes in alcoholic cirrhotics and compared the results with non-cirrhotic alcoholics and healthy volunteers. Overall, 237 subjects were included for the study: 156 alcoholic patients (78 cirrhotics, 78 non-cirrhotic alcoholics) and 81 healthy volunteers. Three different single-nucleotide-polymorphism genotyping methods were used. ADH1C genotyping was performed using a polymerase chain reaction-restriction fragment length polymorphism method. The identified ADH1C genotypes were named according to the presence or absence of the enzyme restriction sites. ADH1B (Arg47Hys) genotyping was performed using the allele specific primer extension method, and ALDH2 (Glu487Lys) genotyping was performed by a multiplex polymerase chain reaction using two allele-specific primer pairs. For ADH1B, the frequency of allele *1 in the cirrhotics, non-cirrhotic alcoholics and healthy volunteers was 97.4%, 94.9% and 99.4%, respectively. For ADH1C, the frequency of allele *1 in the cirrhotics, non-cirrhotic alcoholics and healthy volunteers was 47%, 36.3% and 45%, respectively. There was no statistical difference between the groups for ADH1B and ADH1C (p>0.05). All alcoholic and non-alcoholic subjects (100%) had the allele *1 for ALDH2. The obtained results for ADH1B, ADH1C, and ALDH gene polymorphisms in the present study are similar to the results of Caucasian studies. ADH1B and ADH1C genetic variations are not related to the development of alcoholism or susceptibility to alcoholic cirrhosis. ALDH2 gene has no genetic variation in the Turkish population.
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Luczak SE, Yarnell LM, Prescott CA, Myers MG, Liang T, Wall TL. Effects of ALDH2∗2 on alcohol problem trajectories of Asian American college students. JOURNAL OF ABNORMAL PSYCHOLOGY 2015; 123:130-40. [PMID: 24661165 DOI: 10.1037/a0035486] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The variant aldehyde dehydrogenase allele, ALDH2∗2, consistently has been associated with protection against alcohol dependence, but the mechanism underlying this process is not known. This study examined growth trajectories of alcohol consumption (frequency, average quantity, binge drinking, maximum drinks) and problems over the college years and then tested whether the ALDH2 genotype mediated or moderated the relationship between alcohol consumption and problems. Asian American college students (N = 433) reported on their drinking behavior in their first year of college and then annually for 3 consecutive years. Alcohol consumption and problems increased over the college years for both those with and without ALDH2∗2, but having an ALDH2∗2 allele was associated with less of an increase in problems over time. A mediation model was supported, with ALDH2∗2 group differences in problems fully accounted for by differences in frequency of binge drinking. Findings also supported a moderation hypothesis: All four alcohol consumption variables were significant predictors of subsequent alcohol problems, but these relationships were not as strong in those with ALDH2∗2 as in those without ALDH2∗2. Our findings suggest that the interplay between ALDH2∗2 and drinking-related problems is complex, involving both mediation and moderation processes that reduce the likelihood of developing problems via reduction of heavy drinking as well as by altering the relationship between alcohol consumption and problems. Results of this longitudinal study provide evidence that what seems like a relatively straightforward effect of a diminished ability to metabolize alcohol on drinking behavior is actually dependent on behavior and developmental stage.
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Affiliation(s)
- Susan E Luczak
- Department of Psychology, University of Southern California
| | - Lisa M Yarnell
- Department of Psychology, University of Southern California
| | | | - Mark G Myers
- Department of Psychology, University of California
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Ayhan Y, Gürel ŞC, Karaca Ö, Zoto T, Hayran M, Babaoğlu M, Yaşar Ü, Bozkurt A, Dilbaz N, Uluğ BD, Demir B. Association between ADH1C and ALDH2 polymorphisms and alcoholism in a Turkish sample. Nord J Psychiatry 2015; 69:233-9. [PMID: 25372623 DOI: 10.3109/08039488.2014.972450] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Polymorphisms in the genes encoding alcohol metabolizing enzymes are associated with alcohol dependence. AIM To evaluate the association between the alcohol dehydrogenase 1C (ADH1C) Ile350Val and aldehyde dehydrogenase 2 (ALDH2) Glu504Lys polymorphisms and alcohol dependence in a Turkish sample. METHODS 235 individuals (115 alcohol-dependent patients and 120 controls) were genotyped for ADH1C and ALDH2 with PCR-RFLP (polymerase chain reaction-restriction fragment length polymorphism). Association between the polymorphisms and family history, daily and maximum amount of alcohol consumed was investigated. The associations between alcohol dependence, severity of consumption and family history and the polymorphisms were analyzed by chi-square or Fisher's exact test where necessary. Relationship between genotypes and dependence related features was evaluated using analysis of variance (ANOVA). RESULTS The -350Val allele for ADH1C (ADH1C*2) was increased in alcohol-dependent patients (P = 0.05). In individuals with a positive family history, the genotype distribution differed significantly (P = 0.031) and more patients carried the Val allele compared with controls (P = 0.025). Genotyping of 162 participants did not reveal the -504Lys allele in ALDH2. CONCLUSIONS These findings suggest that ADH1C*2 is associated with alcohol dependence in the Turkish population displaying a dominant inheritance model. ADH1C*2 allele may contribute to the variance in heritability of alcohol dependence. The ALDH2 -504Lys/Lys or Glu/Lys genotypes were not present in alcohol-dependent patients, similar to that seen in European populations and in contrast to the findings in the Asian populations.
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Affiliation(s)
- Yavuz Ayhan
- Yavuz Ayhan, Hacettepe University, Faculty of Medicine, Department of Psychiatry , 06100, Sıhhiye, Ankara , Turkey
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Israel Y, Quintanilla ME, Karahanian E, Rivera-Meza M, Herrera-Marschitz M. The "first hit" toward alcohol reinforcement: role of ethanol metabolites. Alcohol Clin Exp Res 2015; 39:776-86. [PMID: 25828063 DOI: 10.1111/acer.12709] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Accepted: 02/22/2015] [Indexed: 12/20/2022]
Abstract
This review analyzes literature that describes the behavioral effects of 2 metabolites of ethanol (EtOH): acetaldehyde and salsolinol (a condensation product of acetaldehyde and dopamine) generated in the brain. These metabolites are self-administered into specific brain areas by animals, showing strong reinforcing effects. A wealth of evidence shows that EtOH, a drug consumed to attain millimolar concentrations, generates brain metabolites that are reinforcing at micromolar and nanomolar concentrations. Salsolinol administration leads to marked increases in voluntary EtOH intake, an effect inhibited by mu-opioid receptor blockers. In animals that have ingested EtOH chronically, the maintenance of alcohol intake is no longer influenced by EtOH metabolites, as intake is taken over by other brain systems. However, after EtOH withdrawal brain acetaldehyde has a major role in promoting binge-like drinking in the condition known as the "alcohol deprivation effect"; a condition seen in animals that have ingested alcohol chronically, are deprived of EtOH for extended periods, and are allowed EtOH re-access. The review also analyzes the behavioral effects of acetate, a metabolite that enters the brain and is responsible for motor incoordination at low doses of EtOH. Also discussed are the paradoxical effects of systemic acetaldehyde. Overall, evidence strongly suggests that brain-generated EtOH metabolites play a major role in the early ("first-hit") development of alcohol reinforcement and in the generation of relapse-like drinking.
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Affiliation(s)
- Yedy Israel
- Program of Molecular and Clinical Pharmacology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago, Chile
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Zhong Y, Cao J, Zou R, Peng M. Genetic polymorphisms in alcohol dehydrogenase, aldehyde dehydrogenase and alcoholic chronic pancreatitis susceptibility: a meta-analysis. GASTROENTEROLOGIA Y HEPATOLOGIA 2014; 38:417-25. [PMID: 25541509 DOI: 10.1016/j.gastrohep.2014.11.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Revised: 11/08/2014] [Accepted: 11/10/2014] [Indexed: 12/20/2022]
Abstract
PURPOSE This study was aimed to determine the relationship of alcohol-metabolizing enzymes ADH2, ADH3, and ALDH2 polymorphisms with the susceptibility to alcoholic chronic pancreatitis (ACP). METHODS Meta-analyses that evaluated the association of ADH2, ADH3, and ALDH2 variations with ACP were performed. RESULTS Eight case-control studies were selected for analysis. The overall data revealed a significant association of ADH2 polymorphism (OR=1.56, 95% CI=1.42-1.72, P=0.000 for dominant model; OR=1.63, 95% CI=1.55-1.71, P=0.000 for homozygote comparison model; OR=1.11, 95% CI=1.01-1.22, P=0.030 for allelic contrast model), ADH3 polymorphism (OR=0.95, 95% CI=0.86-1.06, P=0.389 for dominant; OR=0.64, 95% CI=0.44-0.93, P=0.020 for homozygote comparison; and OR=0.87, 95% CI=0.77-0.99, P=0.039 for allelic contrast model) and ALDH2 polymorphism (OR=0.57, 95% CI=0.40-0.81, P=0.002 for dominant; OR=0.50, 95% CI=0.23-1.08, P=0.079 for homozygote comparison; and OR=0.58, 95% CI=0.41-0.84, P=0.003 for allelic contrast model) with ACP risk. The subgroup analyses suggested that the variant ADH2*2/*2+*1/*2, ADH2*2/*2 genotype and ADH2*2 allele significantly increased ACP risk among Asian individuals; the variant ADH3*2/*2 genotype and ADH3*2 allele significantly decreased ACP risk among non-Asian individuals; and the variant ALDH2*2/*2+*1/*2 genotype and ALDH2*2 allele significantly decreased ACP risk among Asians. CONCLUSIONS ADH2, ADH3 and ALDH2 polymorphisms may be susceptibility facts of ACP, and it may be ethnic and race-dependent.
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Affiliation(s)
- Yanjun Zhong
- ICU Center, The Second Xiangya Hospital, Central South University, No. 139 Renmin Middle Road, Furong, Changsha 410011, Hunan, China.
| | - Jie Cao
- Department of Respiratory, Anhui Provincial Hospital, No. 17 Luyang Road, Hefei 230011, Anhui, China
| | - Runmei Zou
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, No. 139 Renmin Middle Road, Furong, Changsha 410011, Hunan, China
| | - Mou Peng
- Department of Urology, The Second Xiangya Hospital, Central South University, No. 139 Renmin Middle Road, Furong, Changsha 410011, Hunan, China
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Bjerregaard P, Mikkelsen SS, Becker U, Hansen T, Tolstrup JS. Genetic variation in alcohol metabolizing enzymes among Inuit and its relation to drinking patterns. Drug Alcohol Depend 2014; 144:239-44. [PMID: 25311581 DOI: 10.1016/j.drugalcdep.2014.09.774] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Revised: 08/21/2014] [Accepted: 09/12/2014] [Indexed: 12/20/2022]
Abstract
BACKGROUND Variation in genes involved in alcohol metabolism is associated with drinking patterns worldwide. We compared variation in these genes among the Inuit with published results from the general population of Denmark and, due to the Asian ancestry of the Inuit, with Han Chinese. We analyzed the association between gene variations and drinking patterns among the Inuit. METHODS We genotyped 4162 Inuit participants from two population health surveys. Information on drinking patterns was available for 3560. Seven single nucleotide polymorphisms (SNPs) were examined: ADH1B arg48his, ADH1C ile350val, ADH1C arg272gln, ALDH2 glu504lys, ALDH2 5'-UTR A-357G, ALDH1B1 ala86val and ALDH1B1 arg107leu. RESULTS The allele distribution differed significantly between Inuit and the general population of Denmark. A protective effect on heavy drinking was found for the TT genotype of the ALDH1B1 arg107leu SNP (OR=0.59; 95% CI 0.37-0.92), present in 3% of pure Inuit and 37% of Danes. The ADH1C GG genotype was associated with heavy drinking and a positive CAGE test (OR 1.34; 95% CI 1.05-1.72). It was present in 27% of Inuit and 18% of Danes. The Asian genotype pattern with a high frequency of the ADH1B A allele and an ALDH2 gene coding for an inactive enzyme was not present in Greenland. CONCLUSIONS ADH1C and ALDH1B1 arg107leu SNPs play a role in the shaping of drinking patterns among the Inuit in Greenland. A low frequency of the ALDH1B1 arg107leu TT genotype compared with the general population in Denmark deserves further study. This genotype was protective of heavy drinking among the Inuit.
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Affiliation(s)
- Peter Bjerregaard
- National Institute of Public Health, University of Southern Denmark, Øster Farimagsgade 5A, 1353 Copenhagen K, Denmark; Greenland Centre for Health Research, University of Greenland, 3900 Nuuk, Greenland.
| | - Stine Schou Mikkelsen
- National Institute of Public Health, University of Southern Denmark, Øster Farimagsgade 5A, 1353 Copenhagen K, Denmark
| | - Ulrik Becker
- National Institute of Public Health, University of Southern Denmark, Øster Farimagsgade 5A, 1353 Copenhagen K, Denmark; Gastrounit, Medical Division, Copenhagen University Hospital Hvidovre, Kettegård Alle 30, 2650 Hvidovre, Denmark
| | - Torben Hansen
- The Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Universitetsparken 1, 2100 Copenhagen, Denmark
| | - Janne S Tolstrup
- National Institute of Public Health, University of Southern Denmark, Øster Farimagsgade 5A, 1353 Copenhagen K, Denmark
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Williams JA, Manley S, Ding WX. New advances in molecular mechanisms and emerging therapeutic targets in alcoholic liver diseases. World J Gastroenterol 2014; 20:12908-12933. [PMID: 25278688 PMCID: PMC4177473 DOI: 10.3748/wjg.v20.i36.12908] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Revised: 03/07/2014] [Accepted: 04/16/2014] [Indexed: 02/06/2023] Open
Abstract
Alcoholic liver disease is a major health problem in the United States and worldwide. Chronic alcohol consumption can cause steatosis, inflammation, fibrosis, cirrhosis and even liver cancer. Significant progress has been made to understand key events and molecular players for the onset and progression of alcoholic liver disease from both experimental and clinical alcohol studies. No successful treatments are currently available for treating alcoholic liver disease; therefore, development of novel pathophysiological-targeted therapies is urgently needed. This review summarizes the recent progress on animal models used to study alcoholic liver disease and the detrimental factors that contribute to alcoholic liver disease pathogenesis including miRNAs, S-adenosylmethionine, Zinc deficiency, cytosolic lipin-1β, IRF3-mediated apoptosis, RIP3-mediated necrosis and hepcidin. In addition, we summarize emerging adaptive protective effects induced by alcohol to attenuate alcohol-induced liver pathogenesis including FoxO3, IL-22, autophagy and nuclear lipin-1α.
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Chamorro AJ, Torres JL, Mirón-Canelo JA, González-Sarmiento R, Laso FJ, Marcos M. Systematic review with meta-analysis: the I148M variant of patatin-like phospholipase domain-containing 3 gene (PNPLA3) is significantly associated with alcoholic liver cirrhosis. Aliment Pharmacol Ther 2014; 40:571-81. [PMID: 25060292 DOI: 10.1111/apt.12890] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Revised: 05/02/2014] [Accepted: 07/07/2014] [Indexed: 12/14/2022]
Abstract
BACKGROUND Several studies have reported an association between alcoholic liver cirrhosis (ALC) or other forms of alcoholic liver disease (ALD) and the genetic variant rs738409 (C>G) in adiponutrin/patatin-like phospholipase domain-containing 3 gene (PNPLA3). AIM To evaluate the influence of this variant on ALC and other forms of ALD. METHODS We performed a systematic review of previous studies on the relationship between rs738409 of PNPLA3 and ALD and meta-analysis was conducted in a random-effects model. Calculations of the odds ratios (ORs) and their confidence intervals (CIs), tests for heterogeneity and sensitivity analyses were performed. RESULTS Database search identified 11 previous studies available for inclusion with a total of 3495 patients with ALD (2087 with ALC) and 5038 controls (4007 healthy subjects and 1031 alcoholics without ALD). Patients with ALC compared to controls had a significantly higher prevalence of the G allele when comparing GG vs. CC (OR 4.30, 95% CI 3.25-5.69; P < 0.00001) or GC vs. CC genotypes (GC vs. CC: OR 1.91, 95% CI 1.67-2.17) or under a recessive or dominant model. Similar results were found when comparing separately patients with ALC vs. alcoholics without ALD or healthy subjects. An association of the G allele with ALD emerged when comparing ALD patients vs. alcoholics without ALD and/or healthy subjects although moderate to large heterogeneity was observed. Our data suggested an additive genetic model for this variant in ALD. CONCLUSION Our meta-analysis shows that the rs738409 variant of PNPLA3 is clearly associated with alcoholic liver cirrhosis.
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Affiliation(s)
- A-J Chamorro
- Alcoholism Unit, Department of Internal Medicine, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
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Montane Jaime LK, Shafe S, Liang T, Wills DN, Berg GI, Ehlers CL. Subjective response to alcohol and ADH polymorphisms in a select sample of young adult male East Indians and Africans in Trinidad and Tobago. J Stud Alcohol Drugs 2014; 75:827-38. [PMID: 25208201 PMCID: PMC4161702 DOI: 10.15288/jsad.2014.75.827] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Accepted: 04/29/2014] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVE Level of response to alcohol has been associated with risk of alcohol dependence in a number of ethnic groups. In the present study, subjective and objective responses to alcohol were evaluated in Indo-Trinidadians (Indo-T) and Afro-Trinidadians (Afro-T). Associations of alcohol dehydrogenase polymorphisms with response to alcohol, using the Subjective High Assessment Scale (SHAS), and breath alcohol concentrations (BrAC) were tested. METHOD Regular male drinkers without alcohol dependence (n = 112) ages 18-25 years participated in alcohol challenge sessions consisting of placebo and two doses of alcohol (target BrAC: 0 g/dl for placebo, .04 g/dl low dose, and .08 g/dl high dose) and genotyped for variants in ADH1B*3 and ADH1C*2. RESULTS Indo-T had significantly higher BrAC, pulse rates, and cortisol levels when compared with Afro-T but did not have significantly higher SHAS values. Higher responses on the SHAS items muddle/confused and nauseated were significantly associated with the presence of at least one ADH1B*3 allele following the high dose of alcohol in Afro-T. Indo-T with at least one ADH1C*2 allele displayed significantly different Drug × Time interactions for the SHAS item effects of alcohol at the low dose and for the SHAS items clumsy, muddle/confused, effects of alcohol, floating, drunk, and total at the high dose from Indo-T with two ADH1C*1 alleles. CONCLUSIONS This is the first study that has investigated individual sensitivity to alcohol in a Caribbean population and in people of East Indian descent. Indo-T with at least one ADH1C*2 allele may be at higher risk for heavy drinking by feeling less of the effects of alcohol, including nausea. In Afro-T, having at least one ADH1B*3 allele appears to exert a protective effect by enhancing the unpleasant effects of alcohol, such as nausea and confusion.
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Affiliation(s)
- Lazara Karelia Montane Jaime
- Pharmacology Unit, Department of Paraclinical Sciences, Faculty of Medical Sciences, University of the West Indies, St. Augustine, Trinidad and Tobago
| | - Samuel Shafe
- Psychiatric Unit, Department of Clinical Sciences, Faculty of Medical Sciences, University of the West Indies, St. Augustine, Trinidad and Tobago
| | - Tiebing Liang
- Department of Medicine, Division of Endocrinology, Indiana University School of Medicine, Indianapolis, Indiana
| | - Derek N Wills
- Department of Molecular and Cellular Neurosciences, Scripps Research Institute, La Jolla, California
| | - Greta I Berg
- Department of Molecular and Cellular Neurosciences, Scripps Research Institute, La Jolla, California
| | - Cindy L Ehlers
- Department of Molecular and Cellular Neurosciences, Scripps Research Institute, La Jolla, California
- Department of Molecular and Experimental Medicine, Scripps Research Institute, La Jolla, California
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Streba LAM, Vere CC, Streba CT, Ciurea ME. Focus on alcoholic liver disease: from nosography to treatment. World J Gastroenterol 2014; 20:8040-7. [PMID: 25009375 PMCID: PMC4081674 DOI: 10.3748/wjg.v20.i25.8040] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Revised: 01/06/2014] [Accepted: 02/16/2014] [Indexed: 02/06/2023] Open
Abstract
Abusive alcohol intake currently ranks as a major cause of liver disease, and is associated with significant mortality worldwide. Alcoholic liver disease (ALD) generically defines liver abnormalities ranging from liver steatosis to the end-stages of disease such as liver cirrhosis. Information regarding the precise incidence and prevalence of ALD is still limited by a lack of large population-based studies and by the absence of large systematic reviews of all epidemiological data available. However, existing collected data show an overall increase in the number of alcohol abusers and alcohol-related liver disease. The burden exerted on medical systems worldwide is significant, with hospitalization and management costs rising constantly over the years. A great number of all cirrhosis-related deaths in Europe and a significant percentage worldwide are associated with alcohol consumption. The main possible risk factors for ALD are the amount and duration of alcohol abuse, patterns of drinking and the type of alcoholic beverage consumed. However, ALD does not progress to cirrhosis in all patients, therefore a series of additional factors are implicated. Even though insufficiently studied, genetic factors are generally regarded as highly important, and the presence of comorbidities and dietary habits seem to play a role in disease onset and progression. This lack of clear pathophysiological data further translates in the absence of definite treatment for ALD and shall prove challenging in the coming years. In this article, we aimed to briefly review epidemiologic data on the burden of ALD, risk factors, clinical and nosographic as well as therapeutic aspects of this disease. Without attempting to be exhaustive, this short topic highlight emphasizes each point and may serve as a general guidance tool in the complicated literature related to ALD.
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Matsumoto A, Vasiliou V, Kawamoto T, Tanaka K, Ichiba M. Ethanol reduces lifespan, body weight, and serum alanine aminotransferase level of aldehyde dehydrogenase 2 knockout mouse. Alcohol Clin Exp Res 2014; 38:1883-93. [PMID: 24930774 DOI: 10.1111/acer.12462] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Accepted: 04/02/2014] [Indexed: 12/20/2022]
Abstract
BACKGROUND The aldehyde dehydrogenase 2 (Aldh2) knockout mouse is an animal model of a polymorphism at the human ALDH2 locus (ALDH2*2). To detect differences in the basic phenotype of this animal model, lifespan, body weight (BW), and serum alanine aminotransferase (ALT) level were evaluated. METHODS Aldh2(+/+) , Aldh2(+/-) , and Aldh2(-/-) mice were maintained, from 10 weeks of age, on standard solid food, with liquid supplied as ethanol (EtOH) solution at a concentration of 0 to 20% (forced EtOH consumption). RESULTS For animals provided with water (without EtOH), mice of the distinct genotypes exhibited no difference in lifespan, with the mean values ranging from 90 to 96 weeks for female mice and 97 to 105 weeks for male mice. For animals provided with EtOH, there was a dose-dependent reduction of lifespan in Aldh2(-/-) mice with p for trend <0.001. For example, the mean lifespans of the Aldh2(-/-) females in the 0, 3, 10, and 20% groups were 95, 85, 70, and 29 weeks, respectively. No influence on lifespan was found for Aldh2(+/+) and Aldh2(+/-) mice. BW and ALT level of Aldh2(-/-) mice were significantly lower than those of Aldh2(+/+) mice when the mice were treated with EtOH. While multiple regression analysis suggested that the BW and ALT level in Aldh2(-/-) mice correlated with lifespan, adjustment for EtOH concentration revealed that this correlation was not significant (i.e., reflected EtOH dependence). CONCLUSIONS Aldh2(-/-) mice were unchanged in terms of their basic phenotype under standard laboratory conditions. However, chronic EtOH administration (forced consumption) in these mice resulted in dose-dependent reductions in lifespan, BW, and serum ALT level.
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Neuman MG, Cohen L, Zakhari S, Nanau RM, Mueller S, Schneider M, Parry C, Isip R, Seitz HK. Alcoholic liver disease: a synopsis of the Charles Lieber's Memorial Symposia 2009-2012. Alcohol Alcohol 2014; 49:373-80. [PMID: 24816574 DOI: 10.1093/alcalc/agu021] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
This paper is based upon the 'Charles Lieber Satellite Symposia' organized by Manuela G. Neuman at each of the 2009-2012 Research Society on Alcoholism (RSA) Annual Meetings. The presentations represent a broad spectrum dealing with alcoholic liver disease (ALD). In addition, a literature search (2008-2013) in the discussed area was performed in order to obtain updated data. The presentations are focused on genetic polymorphisms of ethanol metabolizing enzymes and the role of cytochrome P4502E1 (CYP2E1) in ALD. In addition, alcohol-mediated hepatocarcinogenesis, immune response to alcohol and fibrogenesis in alcoholic hepatitis as well as its co-morbidities with chronic viral hepatitis infections in the presence or absence of human deficiency virus are discussed. Finally, emphasis was led on alcohol and drug interactions as well as liver transplantation for end-stage ALD.
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Affiliation(s)
- Manuela G Neuman
- In Vitro Drug Safety and Biotechnology, University of Toronto, Toronto, ON, Canada Department of Pharmacology and Toxicology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Lawrence Cohen
- Division of Gastroenterology, Sunnybrook Health Sciences Centre, Department of Medicine, Medicine, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Samir Zakhari
- Division of Metabolism and Health Effects, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA
| | - Radu M Nanau
- In Vitro Drug Safety and Biotechnology, University of Toronto, Toronto, ON, Canada Department of Pharmacology and Toxicology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Sebastian Mueller
- Centre of Alcohol Research, University of Heidelberg and Department of Medicine (Gastroenterology and Hepatology), Salem Medical Centre, Heidelberg, Germany
| | - Michelle Schneider
- Alcohol and Drug Abuse Research Unit, Medical Research Council, Stellenbosch University, Cape Town, South Africa
| | - Charles Parry
- Alcohol and Drug Abuse Research Unit, Medical Research Council, Stellenbosch University, Cape Town, South Africa Department of Psychiatry, Stellenbosch University, Cape Town, South Africa
| | - Romina Isip
- In Vitro Drug Safety and Biotechnology, University of Toronto, Toronto, ON, Canada Department of Pharmacology and Toxicology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Helmut K Seitz
- Centre of Alcohol Research, University of Heidelberg and Department of Medicine (Gastroenterology and Hepatology), Salem Medical Centre, Heidelberg, Germany
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Kang G, Bae KY, Kim SW, Kim J, Shin HY, Kim JM, Shin IS, Yoon JS, Kim JK. Effect of the Allelic Variant of Alcohol DehydrogenaseADH1B*2on Ethanol Metabolism. Alcohol Clin Exp Res 2014; 38:1502-9. [DOI: 10.1111/acer.12427] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Accepted: 03/09/2014] [Indexed: 12/20/2022]
Affiliation(s)
- Gaeun Kang
- Division of Clinical Pharmacology ; Chonnam National University Hospital; Gwangju Korea
| | - Kyung-Yeol Bae
- Department of Psychiatry ; Chonnam National University Medical School; Gwangju Korea
| | - Sung-Wan Kim
- Department of Psychiatry ; Chonnam National University Medical School; Gwangju Korea
| | - Jin Kim
- Clinical Trial Center ; Chonnam National University Hospital; Gwangju Korea
| | - Hee-Young Shin
- Division of Clinical Pharmacology ; Chonnam National University Hospital; Gwangju Korea
- Department of Biomedical Science ; Chonnam National University Medical School; Gwangju Korea
| | - Jae-Min Kim
- Department of Psychiatry ; Chonnam National University Medical School; Gwangju Korea
| | - Il-Seon Shin
- Department of Psychiatry ; Chonnam National University Medical School; Gwangju Korea
| | - Jin-Sang Yoon
- Division of Clinical Pharmacology ; Chonnam National University Hospital; Gwangju Korea
- Department of Psychiatry ; Chonnam National University Medical School; Gwangju Korea
| | - Jong-Keun Kim
- Division of Clinical Pharmacology ; Chonnam National University Hospital; Gwangju Korea
- Department of Pharmacology ; Chonnam National University Medical School; Gwangju Korea
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48
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von Hinke Kessler Scholder S, Wehby GL, Lewis S, Zuccolo L. Alcohol Exposure In Utero and Child Academic Achievement. ECONOMIC JOURNAL (LONDON, ENGLAND) 2014; 124:634-667. [PMID: 25431500 PMCID: PMC4243528 DOI: 10.1111/ecoj.12144] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
We examine the effect of alcohol exposure in utero on child academic achievement. As well as studying the effect of any alcohol exposure, we investigate the effect of the dose, pattern, and duration of exposure. We use a genetic variant in the maternal alcohol-metabolism gene ADH1B as an instrument for alcohol exposure, whilst controlling for the child's genotype on the same variant. We show that the instrument is unrelated to an extensive range of maternal and paternal characteristics and behaviours. OLS regressions suggest an ambiguous association between alcohol exposure in utero and children's academic attainment, but there is a strong social gradient in maternal drinking, with mothers in higher socio-economic groups more likely to drink. In stark contrast to the OLS, the IV estimates show negative effects of prenatal alcohol exposure on child educational attainment. These results are very robust to an extensive set of model specifications. In addition, we show that that the effects are solely driven by the maternal genotype, with no impact of the child's genotype.
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49
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Yokoyama A, Yokoyama T, Brooks PJ, Mizukami T, Matsui T, Kimura M, Matsushita S, Higuchi S, Maruyama K. Macrocytosis, macrocytic anemia, and genetic polymorphisms of alcohol dehydrogenase-1B and aldehyde dehydrogenase-2 in Japanese alcoholic men. Alcohol Clin Exp Res 2014; 38:1237-46. [PMID: 24588059 DOI: 10.1111/acer.12372] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 01/13/2014] [Indexed: 12/20/2022]
Abstract
BACKGROUND Oxidation of ethanol by alcohol dehydrogenase (ADH) generates acetaldehyde (AcH), which is converted to acetate by aldehyde dehydrogenase-2 (ALDH2). Roughly 40% of East Asians are ALDH2-deficient due to an inactive enzyme encoded by the ALDH2*2 allele. ALDH2-deficient individuals have a dramatically elevated risk of esophageal cancer from alcohol consumption. METHODS We investigated the relationship between ALDH2*2, ADH1B*2 (encoding a highly active ADH) and erythrocyte abnormalities, in a population of Japanese alcoholic men (N = 1,238). RESULTS Macrocytosis (mean corpuscular volume [MCV] ≥100 fl) and macrocytic anemia (MCV ≥100 fl and hemoglobin <13.5 g/dl) were found in 62.4 and 24.1% of the subjects, respectively. Age-adjusted daily alcohol consumption did not differ according to ADH1B and ALDH2 genotypes. However, macrocytosis and macrocytic anemia were strongly associated with the ALDH2*1/*2 genotype multivariate odds ratios (ORs; 95% confidence interval [CI] = 2.85 [1.95 to 4.18] and 3.68 [2.64 to 5.15], respectively, versus ALDH2*1/*1). In comparison with the ADH1B*1/*1 and ALDH2*1/*1 genotype combination, the ADH1B*1/*1 and ALDH2*1/*2 genotype combination and the ADH1B*2 allele and ALDH2*1/*2 genotype combination increased stepwise the ORs (95% CI) for macrocytosis (1.65 [0.92 to 2.94] and 4.07 [2.33 to 7.11], respectively, p for difference in OR = 0.015) and macrocytic anemia (2.80 [1.52 to 5.15] and 5.32 [3.29 to 8.62], respectively, p for difference in OR = 0.045). Genotype effects were more prominent on the risks of the more advanced erythrocyte abnormalities. Older age, cigarette smoking, and low body mass index independently increased the risks of the erythrocyte abnormalities. Consumption of beer, which contains folate, decreased the risks, whereas consumption of alcoholic beverages lacking folate did not. CONCLUSIONS These results suggest that the erythrocyte abnormalities in alcoholics are attributable to high AcH exposure as well as to nutritional deficiencies and may be prevented by folate.
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Affiliation(s)
- Akira Yokoyama
- National Hospital Organization Kurihama Medical and Addiction Center, Kanagawa, Japan
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50
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Xu Y, Guo WJ, Wang Q, Lanzi G, Luobu O, Ma XH, Wang YC, Zhen P, Deng W, Liu X, Zhuoma B, Liu XH, Li T, Hu X. Polymorphisms of genes in neurotransmitter systems were associated with alcohol use disorders in a Tibetan population. PLoS One 2013; 8:e80206. [PMID: 24312204 PMCID: PMC3842251 DOI: 10.1371/journal.pone.0080206] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Accepted: 09/30/2013] [Indexed: 02/05/2023] Open
Abstract
Studies of linkage and association in various ethnic populations have revealed many predisposing genes of multiple neurotransmitter systems for alcohol use disorders (AUD). However, evidence often is contradictory regarding the contribution of most candidate genes to the susceptibility of AUD. We, therefore, performed a case-control study to investigate the possible associations of genes selected from multiple neurotransmitter systems with AUD in a homogeneous Tibetan community population in China. AUD cases (N = 281) with an alcohol use disorder identification test (AUDIT) score ≥10, as well as healthy controls (N = 277) with an AUDIT score ≤5, were recruited. All participants were genotyped for 366 single nucleotide polymorphisms (SNPs) of 34 genes selected from those involved in neurotransmitter systems. Association analyses were performed using PLINK version 1.07 software. Allelic analyses before adjustment for multiple tests showed that 15 polymorphisms within seven genes were associated with AUD (p<0.05). After adjustment for the number of SNPs genotyped within each gene, only the association of a single marker (rs10044881) in HTR4 remained statistically significant. Haplotype analysis for two SNPs in HTR4 (rs17777298 and rs10044881) showed that the haplotype AG was significantly associated with the protective effect for AUD. In conclusion, the present study discovered that the HTR4 gene may play a marked role in the pathogenesis of AUD. In addition, this Tibetan population sample marginally replicated previous evidence regarding the associations of six genes in AUD.
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Affiliation(s)
- Yan Xu
- Biorepository, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Wan-jun Guo
- Mental Health Center and Psychiatric Laboratory, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Qiang Wang
- Mental Health Center and Psychiatric Laboratory, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Gongga Lanzi
- Tibet University Medical College, Lasha, Tibet, China
| | - Ouzhu Luobu
- Tibet University Medical College, Lasha, Tibet, China
| | - Xiao-hong Ma
- Mental Health Center and Psychiatric Laboratory, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Ying-cheng Wang
- Mental Health Center and Psychiatric Laboratory, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Puo Zhen
- Tibet University Medical College, Lasha, Tibet, China
| | - Wei Deng
- Mental Health Center and Psychiatric Laboratory, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Xiang Liu
- Mental Health Center and Psychiatric Laboratory, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Basang Zhuoma
- Tibet University Medical College, Lasha, Tibet, China
| | - Xie-he Liu
- Mental Health Center and Psychiatric Laboratory, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Tao Li
- Mental Health Center and Psychiatric Laboratory, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
- * E-mail: (TL); (XH)
| | - Xun Hu
- Biorepository, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
- * E-mail: (TL); (XH)
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