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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Transcriptome analysis of garlic induced hepatoprotection against alcoholic fatty liver

ABSTRACT: Alcohol induced fatty liver cause a dangerous health problem and is the major cause of morbidity and mortality worldwide. Garlic (Allium sativum) is documented to possess anti-fatty liver properties. However the exact molecular mechanisms are unknown. The main aim of this experiment is to elucidate the underlying pathways through which garlic ameliorates alcohol induced fatty liver. Dially disulfide and garlic oil were the garlic compounds used in this study. Leiber DeCarli ethanol liquid diet was to induce fatty liver in C57BL/6 mice model. Also the expression impaired by alcohol induced fatty liver is another aim of this study. Leiber-Decarli ethanol diet was used to induce fatty liver in male C57BL/6 mice (n=12). For control, Lieber-DeCarli liquid control diet was fed to mice (n=4). The control mice were pair-fed to the ethanol mice. After adaptation, the ethanol fed mice were divided into three groups viz. alcohol (n=4), dially disulfide [DADS] (n=4) and garlic oil [GO] (n=4). The study started with the administration of DADS (15 mg/kg bw) or GO (50 mg/kg bw) mixed in 0.1 ml olive oil through gavage. For the control and alcohol groups, same amount of olive oil (0.1 ml) was gavaged. The mice were gavaged daily for 4 weeks. The mice were euthanized by CO2 and blood was collected by cardiac puncture. Liver, kidney, spleen, lungs and hearts were collected and their weights recorded. A portion of liver was snap frozen in liquid nitrogen (200 mg) for RNA extraction.

ORGANISM(S): Mus musculus

SUBMITTER: Lee-Yan Sheen

PROVIDER: E-GEOD-40334 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Transcriptome analysis of garlic induced hepatoprotection against alcoholic fatty liver

Project description:Alcohol induced fatty liver cause a dangerous health problem and is the major cause of morbidity and mortality worldwide. Garlic (Allium sativum) is documented to possess anti-fatty liver properties. However the exact molecular mechanisms are unknown. The main aim of this experiment is to elucidate the underlying pathways through which garlic ameliorates alcohol induced fatty liver. Dially disulfide and garlic oil were the garlic compounds used in this study. Leiber DeCarli ethanol liquid diet was to induce fatty liver in C57BL/6 mice model. Also the expression impaired by alcohol induced fatty liver is another aim of this study.

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Project description:The mice were fed with Lieber-Decarli alcohol liquid diet and intraperitoneal injection of carbon tetrachloride to induce alcoholic liver fibrosis in mice. The drug group was treated with kinsenoside at the same time to study the protective effect and mechanism of kinsenoside on alcoholic liver injury in mice.

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p53 regulates ethanol metabolism via ALDH2 modulating the development of alcoholic fatty liver disease

Project description:The tumor suppressor p53 is critical for tumor suppression and other biological events. Yet, the regulatory role of p53 in alcohol-induced fatty liver remains unclear. Here, we show a role for p53 in regulating the ethanol metabolism via acetaldehyde dehydrogenase 2 (ALDH2), a key enzyme responsible for oxidization of alcohol. Through repressing ethanol oxidization, p53 suppresses intracellular levels of acetyl-CoA and histone acetylation, leading to the inhibition of the stearoyl-CoA desaturase-1 (SCD1) gene expression. Mechanistically, p53 directly binds to ALDH2 and prevents the formation of its active tetramer, and indirectly limits the production of pyruvate that promotes the activity of ALDH2. Notably, p53 deficient mice exhibit increased lipid accumulation, which can be reversed by ALDH2 depletion. Moreover, hepatic specific knockdown of SCD1 diminishes ethanol-induced fatty liver caused by p53 loss. By contrast, overexpression of SCD1 in liver promotes ethanol-induced fatty liver development in wildtype mice, while has mild effect on p53-/- or ALDH2-/- mice. Overall, our findings reveal a previously unrecognized function of p53 in alcohol-induced fatty liver, and uncover pyruvate as a natural regulator of ALDH2.

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ALD miRNA expression

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Gene expression changes in liver tissues from alcohol treated PPARa-null mice

2014-01-14 | E-GEOD-54034 | biostudies-arrayexpress

Gene expression changes in liver tissues from alcohol treated mice

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Nuclear receptor-mediated alleviation of alcoholic fatty liver by polyphenols contained in alcoholic beverages

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2014-02-01 | GSE52644 | GEO

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