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The Integrated "Multiomics" Landscape at Peak Injury and Resolution From Alcohol-Associated Liver Disease

ABSTRACT: To investigate the the liver transcriptome at peak injury and during early and late resolution from alcohol-induced liver injury in mice

ORGANISM(S): Mus musculus

PROVIDER: GSE205484 | GEO | 2022/06/06

REPOSITORIES: GEO

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THE INTEGRATED ‘MULTIOMICS’ LANDSCAPE AT PEAK INJURY AND RESOLUTION FROM ALCOHOLIC LIVER DISEASE

Project description:THE INTEGRATED ‘MULTIOMICS’ LANDSCAPE AT PEAK INJURY AND RESOLUTION FROM ALCOHOLIC LIVER DISEASE

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The Integrated "Multiomics" Landscape at Peak Injury and Resolution From Alcohol-Associated Liver Disease.

Project description:Alcohol-associated liver disease (ALD) is a significant clinical problem for which the most effective therapy is alcohol abstinence. The two aims of this study were, first, to identify the liver transcriptome, fecal microbiome, and portal serum metabolome at peak injury and during early and late resolution from ALD; and second, to integrate their interactions and understand better the pathogenesis of ALD. To provoke alcohol-induced liver injury, female and male wild-type mice were fed the control or ethanol Lieber-DeCarli diets for 6 weeks. To study early and late resolution, alcohol was withdrawn from the diet and mice were sacrificed after 3 and 14 days, respectively. At peak injury, there was increased signal transducer and activator of transcription (Stat3), Rho-GTPases, Tec kinase and glycoprotein VI (Gp6), and decreased peroxisome proliferator-activated receptor signaling. During resolution from ALD, there was up-regulation of vitamin D receptor/retinoid X receptor, toll-like receptor, p38 and Stat3, and down-regulation of liver X receptor signaling. Females showed significant changes in catabolic pathways, whereas males increased cellular stress, injury, and immune-response pathways that decreased during resolution. The bacterial genus Alistipes and the metabolite dipeptide glycyl-L-leucine increased at peak but decreased during resolution from ALD in both genders. Hepatic induction of mitogen-activated protein kinase (Map3k1) correlated with changes in the microbiome and metabolome at peak but was restored during ALD resolution. Inhibition of MAP3K1 protected from ALD in mice. Conclusion: Alcohol abstinence restores the liver transcriptome, fecal microbiome, and portal serum metabolome in a gender-specific manner. Integration of multiomics data identified Map3k1 as a key gene driving pathogenesis and resolution from ALD.

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Blockade of lL17 signaling reverses alcohol-induced liver injury, and excessive alcohol drinking in mice.

Project description:Chronic alcohol abuse has a detrimental effect on the brain and liver. There is no effective treatment for these patients and the mechanism underlying alcohol addiction and consequent alcohol-induced damage of the liver/brain axis remains unresolved. We compared experimental models of alcoholic liver disease (ALD) and alcohol dependence in mice and demonstrated that genetic ablation of IL17 Receptor A (IL17ra-/-), or pharmacological blockade of IL17 signaling effectively suppressed the increased voluntary alcohol drinking in alcohol-dependent mice, and blocked alcohol-induced hepatocellular and neurological damage. The level of circulating IL17A positively correlated with the alcohol use in excessive drinkers, and was further increased in patients with ALD as compared to healthy individuals. Our data suggest that IL17A is a common mediator of excessive alcohol consumption and alcohol-induced liver/brain injury, and targeting IL17A may provide a novel strategy for treatment of alcohol-induced pathology.

2020-04-07 | GSE137228 | GEO

Blockade of lL17 signaling reverses alcohol-induced liver injury, and excessive alcohol drinking in mice.

Project description:Blockade of lL17 signaling reverses alcohol-induced liver injury, and excessive alcohol drinking in mice.

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Stress responsive gene FKBP5 mediates alcohol-induced liver injury through hippo pathway and CXCL1 signaling

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Myocardial Injury Caused by Chronic Alcohol Exposure——A Pilot Study Based on Proteomic

Project description:Chronic alcohol exposure can cause myocardial degenerative diseases, manifested as cardiac insufficiency, arrhythmia, etc. These are defined as alcoholic cardiomyopathy (ACM). Alcohol-mediated myocardial injury has previously been studied through metabolomics, and it has been proved to be involved in the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway related to the biosynthesis of unsaturated fatty acids and oxidative phosphorylation, which tentatively explored the mechanism of ACM induced by chronic drinking. To further study the myocardial damage caused by alcohol, the mouse model of ACM successfully established previously was used to perform proteomics analysis on myocardial specimens. Fifty-six differentially expressed proteins (DEPs) were identified, and they are involved in the KEGG pathway related to fatty acid biosynthesis, lipid metabolism, oxidative stress, and the development of dilated cardiomyopathy (DCM). The present study further demonstrated the underlying causes of myocardial damage caused by chronic alcohol consumption and lays the foundation for further research to clarify the underlying mechanism of ACM.

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Small RNA profiling in mouse alcohol-induced liver injury and steatosis model.

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Fecal microbiota transplantation from female donors restores gut permeability and reduces liver injury and inflammation in middle-aged male mice exposed to alcohol

Project description:Background: Alcohol misuse, binge drinking pattern, and gender-specific effects in the middle-aged population has been clearly underestimated. In the present study, we focused on understanding gender-specific effects of alcohol exposure on the gut-liver axis and the role of gut microbiota in modulating gender-specific responses to alcohol consumption. Methods: Fifty-two-week-old female and male C57BL/6 mice were fasted for 12 h, and then administered a single oral dose of ethanol (EtOH) (6 g/kg). Controls were given a single dose of PBS. Animals were sacrificed 8 h later. Alternatively, fecal microbiota transplantation (FMT) was performed in 52-week-old male mice from female donors of the same age. Permeability of the large intestine (colon), gut microbiota, liver injury, and inflammation was thoroughly evaluated in all groups. Results: Middle-aged male mice exposed to EtOH showed a significant increase in gut permeability in the large intestine, evaluated by FITC-dextran assay and ZO-1, OCCLUDIN and MUCIN-2 immuno-staining, compared to PBS-treated animals, whilst female mice of the same age also increased their gut permeability, but displayed a partially maintained intestinal barrier integrity. Moreover, there was a significant up-regulation of TLRs and markers of hepatocellular injury, cell death (AST, TUNEL-positive cells) and lipid accumulation (ORO) in male mice after EtOH exposure. Interestingly, FMT from female donors to male mice reduced gut leakiness, modified gut microbiota composition, ameliorated liver injury and inflammation, TLR activation and the senescence phenotype of middle-aged mice. Conclusion: Our findings highlighted the relevance of gender in middle-aged individuals who are exposed to alcohol in the gut-liver axis. Moreover, our study revealed that gender-specific microbiota transplantation might be a plausible therapy in the management of alcohol-related disorders during aging.

2024-04-18 | GSE263477 | GEO

The role of Cebpb in Alcohol-associated Liver Disease development and resolution

Project description:Abstinence is an important therapeutic intervention for patients with alcohol-associated liver disease (ALD). However, fibrosis improvement after cessation is not uniform and some patients do not improve. We aimed to use scATAC-seq analysis in a mouse model of ALD to define the mechanism of poor ALD resolution. We analyzed differentially accessible regions in livers from control, ALD, or 4 weeks post alcohol cessation mice and identified transcription factors activated in ALD that remained activated after alcohol withdrawal. The top hit was C/EBPβ. We found that hepatocyte specific Cebpb knockout prevented ALD development, while knockout at the time of alcohol cessation promoted fibrosis resolution.

2024-09-12 | GSE276692 | GEO

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